Add barebone Raspberry Pi port. Supported parts:
- Interrupts controller - Watchdog - System timer - Framebuffer (hardcoded resolution/bpp)
This commit is contained in:
Oleksandr Tymoshenko
parent
f70f23cc3e
commit
1b1a53cf46
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=239922
714
sys/arm/broadcom/bcm2835/bcm2835_fb.c
Normal file
714
sys/arm/broadcom/bcm2835/bcm2835_fb.c
Normal file
@ -0,0 +1,714 @@
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/*-
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* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/endian.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/time.h>
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#include <sys/timetc.h>
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#include <sys/fbio.h>
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#include <sys/consio.h>
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#include <sys/kdb.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/cpufunc.h>
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#include <machine/resource.h>
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#include <machine/frame.h>
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#include <machine/intr.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/fb/fbreg.h>
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#include <dev/syscons/syscons.h>
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#include <arm/broadcom/bcm2835/bcm2835_mbox.h>
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#include <arm/broadcom/bcm2835/bcm2835_vcbus.h>
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#define BCMFB_FONT_HEIGHT 16
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#define FB_WIDTH 640
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#define FB_HEIGHT 480
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struct bcm_fb_config {
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uint32_t xres;
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uint32_t yres;
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uint32_t vxres;
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uint32_t vyres;
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uint32_t pitch;
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uint32_t bpp;
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uint32_t xoffset;
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uint32_t yoffset;
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/* Filled by videocore */
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uint32_t base;
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uint32_t screen_size;
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};
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struct bcmsc_softc {
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device_t dev;
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struct cdev * cdev;
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struct mtx mtx;
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bus_dma_tag_t dma_tag;
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bus_dmamap_t dma_map;
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struct bcm_fb_config* fb_config;
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bus_addr_t fb_config_phys;
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struct intr_config_hook init_hook;
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};
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struct video_adapter_softc {
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/* Videoadpater part */
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video_adapter_t va;
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int console;
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intptr_t fb_addr;
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unsigned int fb_size;
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unsigned int height;
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unsigned int width;
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unsigned int stride;
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unsigned int xmargin;
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unsigned int ymargin;
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unsigned char *font;
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int initialized;
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};
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static struct bcmsc_softc *bcmsc_softc;
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static struct video_adapter_softc va_softc;
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#define bcm_fb_lock(_sc) mtx_lock(&(_sc)->mtx)
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#define bcm_fb_unlock(_sc) mtx_unlock(&(_sc)->mtx)
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#define bcm_fb_lock_assert(sc) mtx_assert(&(_sc)->mtx, MA_OWNED)
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static int bcm_fb_probe(device_t);
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static int bcm_fb_attach(device_t);
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static void bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err);
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static void
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bcm_fb_init(void *arg)
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{
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struct bcmsc_softc *sc = arg;
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struct video_adapter_softc *va_sc = &va_softc;
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int err;
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volatile struct bcm_fb_config* fb_config = sc->fb_config;
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/* TODO: replace it with FDT stuff */
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fb_config->xres = FB_WIDTH;
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fb_config->yres = FB_HEIGHT;
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fb_config->vxres = 0;
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fb_config->vyres = 0;
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fb_config->xoffset = 0;
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fb_config->yoffset = 0;
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fb_config->bpp = 24;
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fb_config->base = 0;
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fb_config->pitch = 0;
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fb_config->screen_size = 0;
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bus_dmamap_sync(sc->dma_tag, sc->dma_map,
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BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
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bcm_mbox_write(BCM2835_MBOX_CHAN_FB, sc->fb_config_phys);
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bcm_mbox_read(BCM2835_MBOX_CHAN_FB, &err);
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bus_dmamap_sync(sc->dma_tag, sc->dma_map,
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BUS_DMASYNC_POSTREAD);
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if (err == 0) {
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device_printf(sc->dev, "%dx%d(%dx%d@%d,%d) %dbpp\n",
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fb_config->xres, fb_config->yres,
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fb_config->vxres, fb_config->vyres,
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fb_config->xoffset, fb_config->yoffset,
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fb_config->bpp);
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device_printf(sc->dev, "pitch %d, base 0x%08x, screen_size %d\n",
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fb_config->pitch, fb_config->base,
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fb_config->screen_size);
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if (fb_config->base) {
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va_sc->fb_addr = (intptr_t)pmap_mapdev(fb_config->base, fb_config->screen_size);
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va_sc->fb_size = fb_config->screen_size;
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va_sc->stride = fb_config->pitch;
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}
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}
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else
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device_printf(sc->dev, "Failed to set framebuffer info\n");
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config_intrhook_disestablish(&sc->init_hook);
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}
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static int
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bcm_fb_probe(device_t dev)
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{
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int error;
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if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-fb"))
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return (ENXIO);
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device_set_desc(dev, "BCM2835 framebuffer device");
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error = sc_probe_unit(device_get_unit(dev),
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device_get_flags(dev) | SC_AUTODETECT_KBD);
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if (error != 0)
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return (error);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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bcm_fb_attach(device_t dev)
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{
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struct bcmsc_softc *sc = device_get_softc(dev);
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int dma_size = sizeof(struct bcm_fb_config);
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int err;
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if (bcmsc_softc)
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return (ENXIO);
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bcmsc_softc = sc;
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sc->dev = dev;
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mtx_init(&sc->mtx, "bcm2835fb", "fb", MTX_DEF);
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err = bus_dma_tag_create(
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bus_get_dma_tag(sc->dev),
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PAGE_SIZE, 0, /* alignment, boundary */
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BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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dma_size, 1, /* maxsize, nsegments */
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dma_size, 0, /* maxsegsize, flags */
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NULL, NULL, /* lockfunc, lockarg */
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&sc->dma_tag);
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err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->fb_config,
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0, &sc->dma_map);
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if (err) {
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device_printf(dev, "cannot allocate framebuffer\n");
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goto fail;
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}
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err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->fb_config,
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dma_size, bcm_fb_dmamap_cb, &sc->fb_config_phys, BUS_DMA_NOWAIT);
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if (err) {
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device_printf(dev, "cannot load DMA map\n");
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goto fail;
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}
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err = (sc_attach_unit(device_get_unit(dev),
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device_get_flags(dev) | SC_AUTODETECT_KBD));
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if (err) {
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device_printf(dev, "failed to attach syscons\n");
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goto fail;
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}
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/*
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* We have to wait until interrupts are enabled.
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* Mailbox relies on it to get data from VideoCore
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*/
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sc->init_hook.ich_func = bcm_fb_init;
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sc->init_hook.ich_arg = sc;
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if (config_intrhook_establish(&sc->init_hook) != 0) {
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device_printf(dev, "failed to establish intrhook\n");
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return (ENOMEM);
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}
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return (0);
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fail:
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return (ENXIO);
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}
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static void
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bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
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{
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bus_addr_t *addr;
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if (err)
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return;
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addr = (bus_addr_t*)arg;
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*addr = PHYS_TO_VCBUS(segs[0].ds_addr);
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}
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static device_method_t bcm_fb_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, bcm_fb_probe),
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DEVMETHOD(device_attach, bcm_fb_attach),
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{ 0, 0 }
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};
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static devclass_t bcm_fb_devclass;
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static driver_t bcm_fb_driver = {
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"fb",
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bcm_fb_methods,
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sizeof(struct bcmsc_softc),
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};
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DRIVER_MODULE(bcm2835fb, simplebus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
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/*
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* Video driver routines and glue.
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*/
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static int bcmfb_configure(int);
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static vi_probe_t bcmfb_probe;
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static vi_init_t bcmfb_init;
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static vi_get_info_t bcmfb_get_info;
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static vi_query_mode_t bcmfb_query_mode;
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static vi_set_mode_t bcmfb_set_mode;
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static vi_save_font_t bcmfb_save_font;
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static vi_load_font_t bcmfb_load_font;
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static vi_show_font_t bcmfb_show_font;
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static vi_save_palette_t bcmfb_save_palette;
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static vi_load_palette_t bcmfb_load_palette;
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static vi_set_border_t bcmfb_set_border;
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static vi_save_state_t bcmfb_save_state;
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static vi_load_state_t bcmfb_load_state;
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static vi_set_win_org_t bcmfb_set_win_org;
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static vi_read_hw_cursor_t bcmfb_read_hw_cursor;
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static vi_set_hw_cursor_t bcmfb_set_hw_cursor;
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static vi_set_hw_cursor_shape_t bcmfb_set_hw_cursor_shape;
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static vi_blank_display_t bcmfb_blank_display;
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static vi_mmap_t bcmfb_mmap;
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static vi_ioctl_t bcmfb_ioctl;
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static vi_clear_t bcmfb_clear;
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static vi_fill_rect_t bcmfb_fill_rect;
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static vi_bitblt_t bcmfb_bitblt;
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static vi_diag_t bcmfb_diag;
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static vi_save_cursor_palette_t bcmfb_save_cursor_palette;
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static vi_load_cursor_palette_t bcmfb_load_cursor_palette;
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static vi_copy_t bcmfb_copy;
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static vi_putp_t bcmfb_putp;
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static vi_putc_t bcmfb_putc;
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static vi_puts_t bcmfb_puts;
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static vi_putm_t bcmfb_putm;
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static video_switch_t bcmfbvidsw = {
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.probe = bcmfb_probe,
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.init = bcmfb_init,
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.get_info = bcmfb_get_info,
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.query_mode = bcmfb_query_mode,
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.set_mode = bcmfb_set_mode,
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.save_font = bcmfb_save_font,
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.load_font = bcmfb_load_font,
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.show_font = bcmfb_show_font,
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.save_palette = bcmfb_save_palette,
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.load_palette = bcmfb_load_palette,
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.set_border = bcmfb_set_border,
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.save_state = bcmfb_save_state,
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.load_state = bcmfb_load_state,
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.set_win_org = bcmfb_set_win_org,
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.read_hw_cursor = bcmfb_read_hw_cursor,
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.set_hw_cursor = bcmfb_set_hw_cursor,
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.set_hw_cursor_shape = bcmfb_set_hw_cursor_shape,
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.blank_display = bcmfb_blank_display,
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.mmap = bcmfb_mmap,
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.ioctl = bcmfb_ioctl,
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.clear = bcmfb_clear,
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.fill_rect = bcmfb_fill_rect,
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.bitblt = bcmfb_bitblt,
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.diag = bcmfb_diag,
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.save_cursor_palette = bcmfb_save_cursor_palette,
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.load_cursor_palette = bcmfb_load_cursor_palette,
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.copy = bcmfb_copy,
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.putp = bcmfb_putp,
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.putc = bcmfb_putc,
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.puts = bcmfb_puts,
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.putm = bcmfb_putm,
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};
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VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
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extern sc_rndr_sw_t txtrndrsw;
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RENDERER(bcmfb, 0, txtrndrsw, gfb_set);
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RENDERER_MODULE(bcmfb, gfb_set);
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static uint16_t bcmfb_static_window[ROW*COL];
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extern u_char dflt_font_16[];
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static int
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bcmfb_configure(int flags)
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{
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struct video_adapter_softc *sc;
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sc = &va_softc;
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|
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if (sc->initialized)
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return 0;
|
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|
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sc->height = FB_HEIGHT;
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sc->width = FB_WIDTH;
|
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|
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bcmfb_init(0, &sc->va, 0);
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|
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sc->initialized = 1;
|
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|
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return (0);
|
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}
|
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|
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static int
|
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bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
|
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{
|
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|
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return (0);
|
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}
|
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|
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static int
|
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bcmfb_init(int unit, video_adapter_t *adp, int flags)
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{
|
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struct video_adapter_softc *sc;
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video_info_t *vi;
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|
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sc = (struct video_adapter_softc *)adp;
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vi = &adp->va_info;
|
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|
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vid_init_struct(adp, "bcmfb", -1, unit);
|
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|
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sc->font = dflt_font_16;
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vi->vi_cheight = BCMFB_FONT_HEIGHT;
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vi->vi_cwidth = 8;
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vi->vi_width = sc->width/8;
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vi->vi_height = sc->height/vi->vi_cheight;
|
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|
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/*
|
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* Clamp width/height to syscons maximums
|
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*/
|
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if (vi->vi_width > COL)
|
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vi->vi_width = COL;
|
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if (vi->vi_height > ROW)
|
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vi->vi_height = ROW;
|
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|
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sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
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sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
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adp->va_window = (vm_offset_t) bcmfb_static_window;
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adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
|
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|
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vid_register(&sc->va);
|
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|
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return (0);
|
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}
|
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|
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static int
|
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bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
|
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{
|
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bcopy(&adp->va_info, info, sizeof(*info));
|
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return (0);
|
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}
|
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|
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static int
|
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bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
|
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{
|
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return (0);
|
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}
|
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|
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static int
|
||||
bcmfb_set_mode(video_adapter_t *adp, int mode)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
|
||||
u_char *data, int c, int count)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
|
||||
u_char *data, int c, int count)
|
||||
{
|
||||
struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
|
||||
|
||||
sc->font = data;
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_show_font(video_adapter_t *adp, int page)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_set_border(video_adapter_t *adp, int border)
|
||||
{
|
||||
return (bcmfb_blank_display(adp, border));
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_load_state(video_adapter_t *adp, void *p)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
|
||||
{
|
||||
*col = *row = 0;
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
|
||||
int celsize, int blink)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_blank_display(video_adapter_t *adp, int mode)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
|
||||
int prot, vm_memattr_t *memattr)
|
||||
{
|
||||
struct video_adapter_softc *sc;
|
||||
|
||||
sc = (struct video_adapter_softc *)adp;
|
||||
|
||||
/*
|
||||
* This might be a legacy VGA mem request: if so, just point it at the
|
||||
* framebuffer, since it shouldn't be touched
|
||||
*/
|
||||
if (offset < sc->stride*sc->height) {
|
||||
*paddr = sc->fb_addr + offset;
|
||||
return (0);
|
||||
}
|
||||
|
||||
return (EINVAL);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_clear(video_adapter_t *adp)
|
||||
{
|
||||
|
||||
return (bcmfb_blank_display(adp, 0));
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_bitblt(video_adapter_t *adp, ...)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_diag(video_adapter_t *adp, int level)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
|
||||
int size, int bpp, int bit_ltor, int byte_ltor)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
|
||||
{
|
||||
struct video_adapter_softc *sc;
|
||||
int row;
|
||||
int col;
|
||||
int i, j, k;
|
||||
uint8_t *addr;
|
||||
u_char *p;
|
||||
uint8_t fg, bg, color;
|
||||
|
||||
sc = (struct video_adapter_softc *)adp;
|
||||
|
||||
if (sc->fb_addr == 0)
|
||||
return (0);
|
||||
|
||||
row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
|
||||
col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
|
||||
p = sc->font + c*BCMFB_FONT_HEIGHT;
|
||||
addr = (uint8_t *)sc->fb_addr
|
||||
+ (row + sc->ymargin)*(sc->stride)
|
||||
+ 3 * (col + sc->xmargin);
|
||||
|
||||
/*
|
||||
* FIXME: hardcoded
|
||||
*/
|
||||
bg = 0x00;
|
||||
fg = 0x80;
|
||||
|
||||
for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
|
||||
for (j = 0, k = 7; j < 8; j++, k--) {
|
||||
if ((p[i] & (1 << k)) == 0)
|
||||
color = bg;
|
||||
else
|
||||
color = fg;
|
||||
|
||||
addr[3*j] = color;
|
||||
addr[3*j+1] = color;
|
||||
addr[3*j+2] = color;
|
||||
}
|
||||
|
||||
addr += (sc->stride);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
|
||||
uint32_t pixel_mask, int size, int width)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Define a stub keyboard driver in case one hasn't been
|
||||
* compiled into the kernel
|
||||
*/
|
||||
#include <sys/kbio.h>
|
||||
#include <dev/kbd/kbdreg.h>
|
||||
|
||||
static int dummy_kbd_configure(int flags);
|
||||
|
||||
keyboard_switch_t bcmdummysw;
|
||||
|
||||
static int
|
||||
dummy_kbd_configure(int flags)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);
|
||||
203
sys/arm/broadcom/bcm2835/bcm2835_intr.c
Normal file
203
sys/arm/broadcom/bcm2835/bcm2835_intr.c
Normal file
@ -0,0 +1,203 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Damjan Marion <dmarion@Freebsd.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Based on OMAP3 INTC code by Ben Gray
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/ktr.h>
|
||||
#include <sys/module.h>
|
||||
#include <sys/rman.h>
|
||||
#include <machine/bus.h>
|
||||
#include <machine/intr.h>
|
||||
|
||||
#include <dev/fdt/fdt_common.h>
|
||||
#include <dev/ofw/openfirm.h>
|
||||
#include <dev/ofw/ofw_bus.h>
|
||||
#include <dev/ofw/ofw_bus_subr.h>
|
||||
|
||||
#define INTC_PENDING_BASIC 0x00
|
||||
#define INTC_PENDING_BANK1 0x04
|
||||
#define INTC_PENDING_BANK2 0x08
|
||||
#define INTC_FIQ_CONTROL 0x0C
|
||||
#define INTC_ENABLE_BANK1 0x10
|
||||
#define INTC_ENABLE_BANK2 0x14
|
||||
#define INTC_ENABLE_BASIC 0x18
|
||||
#define INTC_DISABLE_BANK1 0x1C
|
||||
#define INTC_DISABLE_BANK2 0x20
|
||||
#define INTC_DISABLE_BASIC 0x24
|
||||
|
||||
#define BANK1_START 8
|
||||
#define BANK1_END (BANK1_START + 32 - 1)
|
||||
#define BANK2_START (BANK1_START + 32)
|
||||
#define BANK2_END (BANK2_START + 32 - 1)
|
||||
|
||||
#define IS_IRQ_BASIC(n) (((n) >= 0) && ((n) < BANK1_START))
|
||||
#define IS_IRQ_BANK1(n) (((n) >= BANK1_START) && ((n) <= BANK1_END))
|
||||
#define IS_IRQ_BANK2(n) (((n) >= BANK2_START) && ((n) <= BANK2_END))
|
||||
#define IRQ_BANK1(n) ((n) - BANK1_START)
|
||||
#define IRQ_BANK2(n) ((n) - BANK2_START)
|
||||
|
||||
#ifdef DEBUG
|
||||
#define dprintf(fmt, args...) printf(fmt, ##args)
|
||||
#else
|
||||
#define dprintf(fmt, args...)
|
||||
#endif
|
||||
|
||||
struct bcm_intc_softc {
|
||||
device_t sc_dev;
|
||||
struct resource * intc_res;
|
||||
bus_space_tag_t intc_bst;
|
||||
bus_space_handle_t intc_bsh;
|
||||
};
|
||||
|
||||
static struct bcm_intc_softc *bcm_intc_sc = NULL;
|
||||
|
||||
#define intc_read_4(reg) \
|
||||
bus_space_read_4(bcm_intc_sc->intc_bst, bcm_intc_sc->intc_bsh, reg)
|
||||
#define intc_write_4(reg, val) \
|
||||
bus_space_write_4(bcm_intc_sc->intc_bst, bcm_intc_sc->intc_bsh, reg, val)
|
||||
|
||||
static int
|
||||
bcm_intc_probe(device_t dev)
|
||||
{
|
||||
if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-armctrl-ic"))
|
||||
return (ENXIO);
|
||||
device_set_desc(dev, "BCM2835 Interrupt Controller");
|
||||
return (BUS_PROBE_DEFAULT);
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_intc_attach(device_t dev)
|
||||
{
|
||||
struct bcm_intc_softc *sc = device_get_softc(dev);
|
||||
int rid = 0;
|
||||
|
||||
sc->sc_dev = dev;
|
||||
|
||||
if (bcm_intc_sc)
|
||||
return (ENXIO);
|
||||
|
||||
sc->intc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
||||
if (sc->intc_res == NULL) {
|
||||
device_printf(dev, "could not allocate memory resource\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
sc->intc_bst = rman_get_bustag(sc->intc_res);
|
||||
sc->intc_bsh = rman_get_bushandle(sc->intc_res);
|
||||
|
||||
bcm_intc_sc = sc;
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static device_method_t bcm_intc_methods[] = {
|
||||
DEVMETHOD(device_probe, bcm_intc_probe),
|
||||
DEVMETHOD(device_attach, bcm_intc_attach),
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static driver_t bcm_intc_driver = {
|
||||
"intc",
|
||||
bcm_intc_methods,
|
||||
sizeof(struct bcm_intc_softc),
|
||||
};
|
||||
|
||||
static devclass_t bcm_intc_devclass;
|
||||
|
||||
DRIVER_MODULE(intc, simplebus, bcm_intc_driver, bcm_intc_devclass, 0, 0);
|
||||
|
||||
int
|
||||
arm_get_next_irq(int last_irq)
|
||||
{
|
||||
uint32_t pending;
|
||||
int32_t irq = last_irq + 1;
|
||||
|
||||
/* Sanity check */
|
||||
if (irq < 0)
|
||||
irq = 0;
|
||||
|
||||
/* TODO: should we mask last_irq? */
|
||||
pending = intc_read_4(INTC_PENDING_BASIC);
|
||||
while (irq < BANK1_START) {
|
||||
if (pending & (1 << irq))
|
||||
return irq;
|
||||
irq++;
|
||||
}
|
||||
|
||||
pending = intc_read_4(INTC_PENDING_BANK1);
|
||||
while (irq < BANK2_START) {
|
||||
if (pending & (1 << IRQ_BANK1(irq)))
|
||||
return irq;
|
||||
irq++;
|
||||
}
|
||||
|
||||
pending = intc_read_4(INTC_PENDING_BANK2);
|
||||
while (irq <= BANK2_END) {
|
||||
if (pending & (1 << IRQ_BANK2(irq)))
|
||||
return irq;
|
||||
irq++;
|
||||
}
|
||||
|
||||
return (-1);
|
||||
}
|
||||
|
||||
void
|
||||
arm_mask_irq(uintptr_t nb)
|
||||
{
|
||||
dprintf("%s: %d\n", __func__, nb);
|
||||
|
||||
if (IS_IRQ_BASIC(nb))
|
||||
intc_write_4(INTC_DISABLE_BASIC, (1 << nb));
|
||||
else if (IS_IRQ_BANK1(nb))
|
||||
intc_write_4(INTC_DISABLE_BANK1, (1 << IRQ_BANK1(nb)));
|
||||
else if (IS_IRQ_BANK2(nb))
|
||||
intc_write_4(INTC_DISABLE_BANK2, (1 << IRQ_BANK2(nb)));
|
||||
else
|
||||
printf("arm_mask_irq: Invalid IRQ number: %d\n", nb);
|
||||
}
|
||||
|
||||
void
|
||||
arm_unmask_irq(uintptr_t nb)
|
||||
{
|
||||
dprintf("%s: %d\n", __func__, nb);
|
||||
|
||||
if (IS_IRQ_BASIC(nb))
|
||||
intc_write_4(INTC_ENABLE_BASIC, (1 << nb));
|
||||
else if (IS_IRQ_BANK1(nb))
|
||||
intc_write_4(INTC_ENABLE_BANK1, (1 << IRQ_BANK1(nb)));
|
||||
else if (IS_IRQ_BANK2(nb))
|
||||
intc_write_4(INTC_ENABLE_BANK2, (1 << IRQ_BANK2(nb)));
|
||||
else
|
||||
printf("arm_mask_irq: Invalid IRQ number: %d\n", nb);
|
||||
}
|
||||
603
sys/arm/broadcom/bcm2835/bcm2835_machdep.c
Normal file
603
sys/arm/broadcom/bcm2835/bcm2835_machdep.c
Normal file
@ -0,0 +1,603 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Oleksandr Tymoshenko.
|
||||
* Copyright (c) 1994-1998 Mark Brinicombe.
|
||||
* Copyright (c) 1994 Brini.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software written for Brini by Mark Brinicombe
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Brini.
|
||||
* 4. The name of the company nor the name of the author may be used to
|
||||
* endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
|
||||
*/
|
||||
|
||||
#include "opt_ddb.h"
|
||||
#include "opt_platform.h"
|
||||
#include "opt_global.h"
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#define _ARM32_BUS_DMA_PRIVATE
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/sysproto.h>
|
||||
#include <sys/signalvar.h>
|
||||
#include <sys/imgact.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/ktr.h>
|
||||
#include <sys/linker.h>
|
||||
#include <sys/lock.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/mutex.h>
|
||||
#include <sys/pcpu.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/ptrace.h>
|
||||
#include <sys/cons.h>
|
||||
#include <sys/bio.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/buf.h>
|
||||
#include <sys/exec.h>
|
||||
#include <sys/kdb.h>
|
||||
#include <sys/msgbuf.h>
|
||||
#include <machine/reg.h>
|
||||
#include <machine/cpu.h>
|
||||
#include <machine/fdt.h>
|
||||
|
||||
#include <dev/fdt/fdt_common.h>
|
||||
#include <dev/ofw/openfirm.h>
|
||||
|
||||
#include <vm/vm.h>
|
||||
#include <vm/pmap.h>
|
||||
#include <vm/vm_object.h>
|
||||
#include <vm/vm_page.h>
|
||||
#include <vm/vm_pager.h>
|
||||
#include <vm/vm_map.h>
|
||||
#include <machine/pte.h>
|
||||
#include <machine/pmap.h>
|
||||
#include <machine/vmparam.h>
|
||||
#include <machine/pcb.h>
|
||||
#include <machine/undefined.h>
|
||||
#include <machine/machdep.h>
|
||||
#include <machine/metadata.h>
|
||||
#include <machine/armreg.h>
|
||||
#include <machine/bus.h>
|
||||
#include <sys/reboot.h>
|
||||
|
||||
#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
|
||||
|
||||
#define DEBUG
|
||||
#ifdef DEBUG
|
||||
#define debugf(fmt, args...) printf(fmt, ##args)
|
||||
#else
|
||||
#define debugf(fmt, args...)
|
||||
#endif
|
||||
|
||||
/* Start of address space used for bootstrap map */
|
||||
#define DEVMAP_BOOTSTRAP_MAP_START 0xE0000000
|
||||
|
||||
/*
|
||||
* This is the number of L2 page tables required for covering max
|
||||
* (hypothetical) memsize of 4GB and all kernel mappings (vectors, msgbuf,
|
||||
* stacks etc.), uprounded to be divisible by 4.
|
||||
*/
|
||||
#define KERNEL_PT_MAX 78
|
||||
|
||||
/* Define various stack sizes in pages */
|
||||
#define IRQ_STACK_SIZE 1
|
||||
#define ABT_STACK_SIZE 1
|
||||
#define UND_STACK_SIZE 1
|
||||
|
||||
extern unsigned char kernbase[];
|
||||
extern unsigned char _etext[];
|
||||
extern unsigned char _edata[];
|
||||
extern unsigned char __bss_start[];
|
||||
extern unsigned char _end[];
|
||||
|
||||
#ifdef DDB
|
||||
extern vm_offset_t ksym_start, ksym_end;
|
||||
#endif
|
||||
|
||||
extern u_int data_abort_handler_address;
|
||||
extern u_int prefetch_abort_handler_address;
|
||||
extern u_int undefined_handler_address;
|
||||
|
||||
extern vm_offset_t pmap_bootstrap_lastaddr;
|
||||
extern int *end;
|
||||
|
||||
struct pv_addr kernel_pt_table[KERNEL_PT_MAX];
|
||||
|
||||
/* Physical and virtual addresses for some global pages */
|
||||
vm_paddr_t phys_avail[10];
|
||||
vm_paddr_t dump_avail[4];
|
||||
vm_offset_t physical_pages;
|
||||
vm_offset_t pmap_bootstrap_lastaddr;
|
||||
vm_paddr_t pmap_pa;
|
||||
|
||||
const struct pmap_devmap *pmap_devmap_bootstrap_table;
|
||||
struct pv_addr systempage;
|
||||
struct pv_addr msgbufpv;
|
||||
struct pv_addr irqstack;
|
||||
struct pv_addr undstack;
|
||||
struct pv_addr abtstack;
|
||||
struct pv_addr kernelstack;
|
||||
|
||||
void set_stackptrs(int cpu);
|
||||
|
||||
static struct mem_region availmem_regions[FDT_MEM_REGIONS];
|
||||
static int availmem_regions_sz;
|
||||
|
||||
static void print_kenv(void);
|
||||
static void print_kernel_section_addr(void);
|
||||
|
||||
static void physmap_init(void);
|
||||
static int platform_devmap_init(void);
|
||||
|
||||
static char *
|
||||
kenv_next(char *cp)
|
||||
{
|
||||
|
||||
if (cp != NULL) {
|
||||
while (*cp != 0)
|
||||
cp++;
|
||||
cp++;
|
||||
if (*cp == 0)
|
||||
cp = NULL;
|
||||
}
|
||||
return (cp);
|
||||
}
|
||||
|
||||
static void
|
||||
print_kenv(void)
|
||||
{
|
||||
int len;
|
||||
char *cp;
|
||||
|
||||
debugf("loader passed (static) kenv:\n");
|
||||
if (kern_envp == NULL) {
|
||||
debugf(" no env, null ptr\n");
|
||||
return;
|
||||
}
|
||||
debugf(" kern_envp = 0x%08x\n", (uint32_t)kern_envp);
|
||||
|
||||
len = 0;
|
||||
for (cp = kern_envp; cp != NULL; cp = kenv_next(cp))
|
||||
debugf(" %x %s\n", (uint32_t)cp, cp);
|
||||
}
|
||||
|
||||
static void
|
||||
print_kernel_section_addr(void)
|
||||
{
|
||||
|
||||
debugf("kernel image addresses:\n");
|
||||
debugf(" kernbase = 0x%08x\n", (uint32_t)kernbase);
|
||||
debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
|
||||
debugf(" _edata = 0x%08x\n", (uint32_t)_edata);
|
||||
debugf(" __bss_start = 0x%08x\n", (uint32_t)__bss_start);
|
||||
debugf(" _end = 0x%08x\n", (uint32_t)_end);
|
||||
}
|
||||
|
||||
static void
|
||||
physmap_init(void)
|
||||
{
|
||||
int i, j, cnt;
|
||||
vm_offset_t phys_kernelend, kernload;
|
||||
uint32_t s, e, sz;
|
||||
struct mem_region *mp, *mp1;
|
||||
|
||||
phys_kernelend = KERNPHYSADDR + (virtual_avail - KERNVIRTADDR);
|
||||
kernload = KERNPHYSADDR;
|
||||
|
||||
/*
|
||||
* Remove kernel physical address range from avail
|
||||
* regions list. Page align all regions.
|
||||
* Non-page aligned memory isn't very interesting to us.
|
||||
* Also, sort the entries for ascending addresses.
|
||||
*/
|
||||
sz = 0;
|
||||
cnt = availmem_regions_sz;
|
||||
debugf("processing avail regions:\n");
|
||||
for (mp = availmem_regions; mp->mr_size; mp++) {
|
||||
s = mp->mr_start;
|
||||
e = mp->mr_start + mp->mr_size;
|
||||
debugf(" %08x-%08x -> ", s, e);
|
||||
/* Check whether this region holds all of the kernel. */
|
||||
if (s < kernload && e > phys_kernelend) {
|
||||
availmem_regions[cnt].mr_start = phys_kernelend;
|
||||
availmem_regions[cnt++].mr_size = e - phys_kernelend;
|
||||
e = kernload;
|
||||
}
|
||||
/* Look whether this regions starts within the kernel. */
|
||||
if (s >= kernload && s < phys_kernelend) {
|
||||
if (e <= phys_kernelend)
|
||||
goto empty;
|
||||
s = phys_kernelend;
|
||||
}
|
||||
/* Now look whether this region ends within the kernel. */
|
||||
if (e > kernload && e <= phys_kernelend) {
|
||||
if (s >= kernload) {
|
||||
goto empty;
|
||||
}
|
||||
e = kernload;
|
||||
}
|
||||
/* Now page align the start and size of the region. */
|
||||
s = round_page(s);
|
||||
e = trunc_page(e);
|
||||
if (e < s)
|
||||
e = s;
|
||||
sz = e - s;
|
||||
debugf("%08x-%08x = %x\n", s, e, sz);
|
||||
|
||||
/* Check whether some memory is left here. */
|
||||
if (sz == 0) {
|
||||
empty:
|
||||
printf("skipping\n");
|
||||
bcopy(mp + 1, mp,
|
||||
(cnt - (mp - availmem_regions)) * sizeof(*mp));
|
||||
cnt--;
|
||||
mp--;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Do an insertion sort. */
|
||||
for (mp1 = availmem_regions; mp1 < mp; mp1++)
|
||||
if (s < mp1->mr_start)
|
||||
break;
|
||||
if (mp1 < mp) {
|
||||
bcopy(mp1, mp1 + 1, (char *)mp - (char *)mp1);
|
||||
mp1->mr_start = s;
|
||||
mp1->mr_size = sz;
|
||||
} else {
|
||||
mp->mr_start = s;
|
||||
mp->mr_size = sz;
|
||||
}
|
||||
}
|
||||
availmem_regions_sz = cnt;
|
||||
|
||||
/* Fill in phys_avail table, based on availmem_regions */
|
||||
debugf("fill in phys_avail:\n");
|
||||
for (i = 0, j = 0; i < availmem_regions_sz; i++, j += 2) {
|
||||
|
||||
debugf(" region: 0x%08x - 0x%08x (0x%08x)\n",
|
||||
availmem_regions[i].mr_start,
|
||||
availmem_regions[i].mr_start + availmem_regions[i].mr_size,
|
||||
availmem_regions[i].mr_size);
|
||||
|
||||
phys_avail[j] = availmem_regions[i].mr_start;
|
||||
phys_avail[j + 1] = availmem_regions[i].mr_start +
|
||||
availmem_regions[i].mr_size;
|
||||
}
|
||||
phys_avail[j] = 0;
|
||||
phys_avail[j + 1] = 0;
|
||||
}
|
||||
|
||||
void *
|
||||
initarm(struct arm_boot_params *abp)
|
||||
{
|
||||
struct pv_addr kernel_l1pt;
|
||||
struct pv_addr dpcpu;
|
||||
vm_offset_t dtbp, freemempos, l2_start, lastaddr;
|
||||
uint32_t memsize, l2size;
|
||||
void *kmdp;
|
||||
u_int l1pagetable;
|
||||
int i = 0, j = 0;
|
||||
|
||||
lastaddr = fake_preload_metadata(abp);
|
||||
memsize = 0;
|
||||
set_cpufuncs();
|
||||
|
||||
kmdp = preload_search_by_type("elf kernel");
|
||||
if (kmdp != NULL)
|
||||
dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
|
||||
else
|
||||
dtbp = (vm_offset_t)NULL;
|
||||
|
||||
#if defined(FDT_DTB_STATIC)
|
||||
/*
|
||||
* In case the device tree blob was not retrieved (from metadata) try
|
||||
* to use the statically embedded one.
|
||||
*/
|
||||
if (dtbp == (vm_offset_t)NULL)
|
||||
dtbp = (vm_offset_t)&fdt_static_dtb;
|
||||
#endif
|
||||
|
||||
if (OF_install(OFW_FDT, 0) == FALSE)
|
||||
while (1);
|
||||
|
||||
if (OF_init((void *)dtbp) != 0)
|
||||
while (1);
|
||||
|
||||
/* Grab physical memory regions information from device tree. */
|
||||
if (fdt_get_mem_regions(availmem_regions, &availmem_regions_sz,
|
||||
&memsize) != 0)
|
||||
while(1);
|
||||
|
||||
/* Platform-specific initialisation */
|
||||
pmap_bootstrap_lastaddr = DEVMAP_BOOTSTRAP_MAP_START - ARM_NOCACHE_KVA_SIZE;
|
||||
|
||||
pcpu0_init();
|
||||
|
||||
/* Calculate number of L2 tables needed for mapping vm_page_array */
|
||||
l2size = (memsize / PAGE_SIZE) * sizeof(struct vm_page);
|
||||
l2size = (l2size >> L1_S_SHIFT) + 1;
|
||||
|
||||
/*
|
||||
* Add one table for end of kernel map, one for stacks, msgbuf and
|
||||
* L1 and L2 tables map and one for vectors map.
|
||||
*/
|
||||
l2size += 3;
|
||||
|
||||
/* Make it divisible by 4 */
|
||||
l2size = (l2size + 3) & ~3;
|
||||
|
||||
#define KERNEL_TEXT_BASE (KERNBASE)
|
||||
freemempos = (lastaddr + PAGE_MASK) & ~PAGE_MASK;
|
||||
|
||||
/* Define a macro to simplify memory allocation */
|
||||
#define valloc_pages(var, np) \
|
||||
alloc_pages((var).pv_va, (np)); \
|
||||
(var).pv_pa = (var).pv_va + (KERNPHYSADDR - KERNVIRTADDR);
|
||||
|
||||
#define alloc_pages(var, np) \
|
||||
(var) = freemempos; \
|
||||
freemempos += (np * PAGE_SIZE); \
|
||||
memset((char *)(var), 0, ((np) * PAGE_SIZE));
|
||||
|
||||
while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0)
|
||||
freemempos += PAGE_SIZE;
|
||||
valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
|
||||
|
||||
for (i = 0; i < l2size; ++i) {
|
||||
if (!(i % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) {
|
||||
valloc_pages(kernel_pt_table[i],
|
||||
L2_TABLE_SIZE / PAGE_SIZE);
|
||||
j = i;
|
||||
} else {
|
||||
kernel_pt_table[i].pv_va = kernel_pt_table[j].pv_va +
|
||||
L2_TABLE_SIZE_REAL * (i - j);
|
||||
kernel_pt_table[i].pv_pa =
|
||||
kernel_pt_table[i].pv_va - KERNVIRTADDR +
|
||||
KERNPHYSADDR;
|
||||
|
||||
}
|
||||
}
|
||||
/*
|
||||
* Allocate a page for the system page mapped to 0x00000000
|
||||
* or 0xffff0000. This page will just contain the system vectors
|
||||
* and can be shared by all processes.
|
||||
*/
|
||||
valloc_pages(systempage, 1);
|
||||
|
||||
/* Allocate dynamic per-cpu area. */
|
||||
valloc_pages(dpcpu, DPCPU_SIZE / PAGE_SIZE);
|
||||
dpcpu_init((void *)dpcpu.pv_va, 0);
|
||||
|
||||
/* Allocate stacks for all modes */
|
||||
valloc_pages(irqstack, (IRQ_STACK_SIZE * MAXCPU));
|
||||
valloc_pages(abtstack, (ABT_STACK_SIZE * MAXCPU));
|
||||
valloc_pages(undstack, (UND_STACK_SIZE * MAXCPU));
|
||||
valloc_pages(kernelstack, (KSTACK_PAGES * MAXCPU));
|
||||
|
||||
init_param1();
|
||||
|
||||
valloc_pages(msgbufpv, round_page(msgbufsize) / PAGE_SIZE);
|
||||
|
||||
/*
|
||||
* Now we start construction of the L1 page table
|
||||
* We start by mapping the L2 page tables into the L1.
|
||||
* This means that we can replace L1 mappings later on if necessary
|
||||
*/
|
||||
l1pagetable = kernel_l1pt.pv_va;
|
||||
|
||||
/*
|
||||
* Try to map as much as possible of kernel text and data using
|
||||
* 1MB section mapping and for the rest of initial kernel address
|
||||
* space use L2 coarse tables.
|
||||
*
|
||||
* Link L2 tables for mapping remainder of kernel (modulo 1MB)
|
||||
* and kernel structures
|
||||
*/
|
||||
l2_start = lastaddr & ~(L1_S_OFFSET);
|
||||
for (i = 0 ; i < l2size - 1; i++)
|
||||
pmap_link_l2pt(l1pagetable, l2_start + i * L1_S_SIZE,
|
||||
&kernel_pt_table[i]);
|
||||
|
||||
pmap_curmaxkvaddr = l2_start + (l2size - 1) * L1_S_SIZE;
|
||||
|
||||
/* Map kernel code and data */
|
||||
pmap_map_chunk(l1pagetable, KERNVIRTADDR, KERNPHYSADDR,
|
||||
(((uint32_t)(lastaddr) - KERNVIRTADDR) + PAGE_MASK) & ~PAGE_MASK,
|
||||
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
||||
|
||||
/* Map L1 directory and allocated L2 page tables */
|
||||
pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
|
||||
L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
|
||||
|
||||
pmap_map_chunk(l1pagetable, kernel_pt_table[0].pv_va,
|
||||
kernel_pt_table[0].pv_pa,
|
||||
L2_TABLE_SIZE_REAL * l2size,
|
||||
VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
|
||||
|
||||
/* Map allocated DPCPU, stacks and msgbuf */
|
||||
pmap_map_chunk(l1pagetable, dpcpu.pv_va, dpcpu.pv_pa,
|
||||
freemempos - dpcpu.pv_va,
|
||||
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
||||
|
||||
|
||||
/* Map allocated DPCPU, stacks and msgbuf */
|
||||
pmap_map_chunk(l1pagetable, 0xf2200000, 0x20200000,
|
||||
0x00100000,
|
||||
VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
|
||||
|
||||
/* Link and map the vector page */
|
||||
pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH,
|
||||
&kernel_pt_table[l2size - 1]);
|
||||
pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
|
||||
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE, PTE_CACHE);
|
||||
|
||||
/* Map pmap_devmap[] entries */
|
||||
if (platform_devmap_init() != 0)
|
||||
while (1);
|
||||
pmap_devmap_bootstrap(l1pagetable, pmap_devmap_bootstrap_table);
|
||||
|
||||
cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL * 2)) |
|
||||
DOMAIN_CLIENT);
|
||||
|
||||
pmap_pa = kernel_l1pt.pv_pa;
|
||||
|
||||
setttb(kernel_l1pt.pv_pa);
|
||||
cpu_tlb_flushID();
|
||||
cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL * 2));
|
||||
|
||||
/*
|
||||
* Only after the SOC registers block is mapped we can perform device
|
||||
* tree fixups, as they may attempt to read parameters from hardware.
|
||||
*/
|
||||
OF_interpret("perform-fixup", 0);
|
||||
|
||||
cninit();
|
||||
|
||||
physmem = memsize / PAGE_SIZE;
|
||||
|
||||
debugf("initarm: console initialized\n");
|
||||
debugf(" arg1 mmdp = 0x%08x\n", (uint32_t)kmdp);
|
||||
debugf(" boothowto = 0x%08x\n", boothowto);
|
||||
debugf(" dtbp = 0x%08x\n", (uint32_t)dtbp);
|
||||
print_kernel_section_addr();
|
||||
print_kenv();
|
||||
|
||||
/*
|
||||
* Pages were allocated during the secondary bootstrap for the
|
||||
* stacks for different CPU modes.
|
||||
* We must now set the r13 registers in the different CPU modes to
|
||||
* point to these stacks.
|
||||
* Since the ARM stacks use STMFD etc. we must set r13 to the top end
|
||||
* of the stack memory.
|
||||
*/
|
||||
cpu_control(CPU_CONTROL_MMU_ENABLE, CPU_CONTROL_MMU_ENABLE);
|
||||
|
||||
set_stackptrs(0);
|
||||
|
||||
/*
|
||||
* We must now clean the cache again....
|
||||
* Cleaning may be done by reading new data to displace any
|
||||
* dirty data in the cache. This will have happened in setttb()
|
||||
* but since we are boot strapping the addresses used for the read
|
||||
* may have just been remapped and thus the cache could be out
|
||||
* of sync. A re-clean after the switch will cure this.
|
||||
* After booting there are no gross relocations of the kernel thus
|
||||
* this problem will not occur after initarm().
|
||||
*/
|
||||
cpu_idcache_wbinv_all();
|
||||
|
||||
/* Set stack for exception handlers */
|
||||
data_abort_handler_address = (u_int)data_abort_handler;
|
||||
prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
|
||||
undefined_handler_address = (u_int)undefinedinstruction_bounce;
|
||||
undefined_init();
|
||||
|
||||
init_proc0(kernelstack.pv_va);
|
||||
|
||||
arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
|
||||
|
||||
arm_dump_avail_init(memsize, sizeof(dump_avail) / sizeof(dump_avail[0]));
|
||||
pmap_bootstrap(freemempos, pmap_bootstrap_lastaddr, &kernel_l1pt);
|
||||
msgbufp = (void *)msgbufpv.pv_va;
|
||||
msgbufinit(msgbufp, msgbufsize);
|
||||
mutex_init();
|
||||
|
||||
/*
|
||||
* Prepare map of physical memory regions available to vm subsystem.
|
||||
*/
|
||||
physmap_init();
|
||||
|
||||
/* Do basic tuning, hz etc */
|
||||
init_param2(physmem);
|
||||
kdb_init();
|
||||
|
||||
return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP -
|
||||
sizeof(struct pcb)));
|
||||
}
|
||||
|
||||
void
|
||||
set_stackptrs(int cpu)
|
||||
{
|
||||
|
||||
set_stackptr(PSR_IRQ32_MODE,
|
||||
irqstack.pv_va + ((IRQ_STACK_SIZE * PAGE_SIZE) * (cpu + 1)));
|
||||
set_stackptr(PSR_ABT32_MODE,
|
||||
abtstack.pv_va + ((ABT_STACK_SIZE * PAGE_SIZE) * (cpu + 1)));
|
||||
set_stackptr(PSR_UND32_MODE,
|
||||
undstack.pv_va + ((UND_STACK_SIZE * PAGE_SIZE) * (cpu + 1)));
|
||||
}
|
||||
|
||||
#define FDT_DEVMAP_MAX (2) // FIXME
|
||||
static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
|
||||
{ 0, 0, 0, 0, 0, }
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Construct pmap_devmap[] with DT-derived config data.
|
||||
*/
|
||||
static int
|
||||
platform_devmap_init(void)
|
||||
{
|
||||
int i = 0;
|
||||
|
||||
fdt_devmap[i].pd_va = 0xf2000000;
|
||||
fdt_devmap[i].pd_pa = 0x20000000;
|
||||
fdt_devmap[i].pd_size = 0x01000000; /* 1 MB */
|
||||
fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
|
||||
fdt_devmap[i].pd_cache = PTE_DEVICE;
|
||||
i++;
|
||||
|
||||
pmap_devmap_bootstrap_table = &fdt_devmap[0];
|
||||
return (0);
|
||||
}
|
||||
|
||||
struct arm32_dma_range *
|
||||
bus_dma_get_range(void)
|
||||
{
|
||||
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
int
|
||||
bus_dma_get_range_nb(void)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
cpu_reset()
|
||||
{
|
||||
bcmwd_watchdog_reset();
|
||||
while (1);
|
||||
}
|
||||
249
sys/arm/broadcom/bcm2835/bcm2835_mbox.c
Normal file
249
sys/arm/broadcom/bcm2835/bcm2835_mbox.c
Normal file
@ -0,0 +1,249 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/module.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/rman.h>
|
||||
#include <sys/timeet.h>
|
||||
#include <sys/timetc.h>
|
||||
#include <sys/watchdog.h>
|
||||
#include <machine/bus.h>
|
||||
#include <machine/cpu.h>
|
||||
#include <machine/frame.h>
|
||||
#include <machine/intr.h>
|
||||
|
||||
#include <dev/fdt/fdt_common.h>
|
||||
#include <dev/ofw/openfirm.h>
|
||||
#include <dev/ofw/ofw_bus.h>
|
||||
#include <dev/ofw/ofw_bus_subr.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
#include <machine/fdt.h>
|
||||
#include <arm/broadcom/bcm2835/bcm2835_mbox.h>
|
||||
|
||||
#define REG_READ 0x00
|
||||
#define REG_POL 0x10
|
||||
#define REG_SENDER 0x14
|
||||
#define REG_STATUS 0x18
|
||||
#define STATUS_FULL 0x80000000
|
||||
#define STATUS_EMPTY 0x40000000
|
||||
#define REG_CONFIG 0x1C
|
||||
#define CONFIG_DATA_IRQ 0x00000001
|
||||
#define REG_WRITE 0x20 /* This is Mailbox 1 address */
|
||||
|
||||
#define MBOX_MSG(chan, data) (((data) & ~0xf) | ((chan) & 0xf))
|
||||
#define MBOX_CHAN(msg) ((msg) & 0xf)
|
||||
#define MBOX_DATA(msg) ((msg) & ~0xf)
|
||||
|
||||
#define MBOX_LOCK do { \
|
||||
mtx_lock(&bcm_mbox_sc->lock); \
|
||||
} while(0)
|
||||
|
||||
#define MBOX_UNLOCK do { \
|
||||
mtx_unlock(&bcm_mbox_sc->lock); \
|
||||
} while(0)
|
||||
|
||||
#ifdef DEBUG
|
||||
#define dprintf(fmt, args...) printf(fmt, ##args)
|
||||
#else
|
||||
#define dprintf(fmt, args...)
|
||||
#endif
|
||||
|
||||
struct bcm_mbox_softc {
|
||||
struct mtx lock;
|
||||
struct resource * mem_res;
|
||||
struct resource * irq_res;
|
||||
void* intr_hl;
|
||||
bus_space_tag_t bst;
|
||||
bus_space_handle_t bsh;
|
||||
int valid[BCM2835_MBOX_CHANS];
|
||||
int msg[BCM2835_MBOX_CHANS];
|
||||
};
|
||||
|
||||
static struct bcm_mbox_softc *bcm_mbox_sc = NULL;
|
||||
|
||||
#define mbox_read_4(reg) \
|
||||
bus_space_read_4(bcm_mbox_sc->bst, bcm_mbox_sc->bsh, reg)
|
||||
#define mbox_write_4(reg, val) \
|
||||
bus_space_write_4(bcm_mbox_sc->bst, bcm_mbox_sc->bsh, reg, val)
|
||||
|
||||
static void
|
||||
bcm_mbox_intr(void *arg)
|
||||
{
|
||||
struct bcm_mbox_softc *sc = arg;
|
||||
int chan;
|
||||
uint32_t data;
|
||||
uint32_t msg;
|
||||
|
||||
MBOX_LOCK;
|
||||
while (!(mbox_read_4(REG_STATUS) & STATUS_EMPTY)) {
|
||||
msg = mbox_read_4(REG_READ);
|
||||
dprintf("bcm_mbox_intr: raw data %08x\n", msg);
|
||||
chan = MBOX_CHAN(msg);
|
||||
data = MBOX_DATA(msg);
|
||||
if (sc->valid[chan]) {
|
||||
printf("bcm_mbox_intr: channel %d oveflow\n", chan);
|
||||
continue;
|
||||
}
|
||||
dprintf("bcm_mbox_intr: chan %d, data %08x\n", chan, data);
|
||||
sc->msg[chan] = data;
|
||||
sc->valid[chan] = 1;
|
||||
wakeup(&sc->msg[chan]);
|
||||
|
||||
}
|
||||
MBOX_UNLOCK;
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_mbox_probe(device_t dev)
|
||||
{
|
||||
|
||||
if (ofw_bus_is_compatible(dev, "broadcom,bcm2835-mbox")) {
|
||||
device_set_desc(dev, "BCM2835 VideoCore Mailbox");
|
||||
return(BUS_PROBE_DEFAULT);
|
||||
}
|
||||
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_mbox_attach(device_t dev)
|
||||
{
|
||||
struct bcm_mbox_softc *sc = device_get_softc(dev);
|
||||
int i;
|
||||
int rid = 0;
|
||||
|
||||
if (bcm_mbox_sc != NULL)
|
||||
return (EINVAL);
|
||||
|
||||
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
||||
if (sc->mem_res == NULL) {
|
||||
device_printf(dev, "could not allocate memory resource\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
sc->bst = rman_get_bustag(sc->mem_res);
|
||||
sc->bsh = rman_get_bushandle(sc->mem_res);
|
||||
|
||||
rid = 0;
|
||||
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
|
||||
if (sc->irq_res == NULL) {
|
||||
device_printf(dev, "could not allocate interrupt resource\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
/* Setup and enable the timer */
|
||||
if (bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC,
|
||||
NULL, bcm_mbox_intr, sc,
|
||||
&sc->intr_hl) != 0) {
|
||||
bus_release_resource(dev, SYS_RES_IRQ, rid,
|
||||
sc->irq_res);
|
||||
device_printf(dev, "Unable to setup the clock irq handler.\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
mtx_init(&sc->lock, "vcio mbox", MTX_DEF, 0);
|
||||
for (i = 0; i < BCM2835_MBOX_CHANS; i++) {
|
||||
sc->valid[0] = 0;
|
||||
sc->msg[0] = 0;
|
||||
}
|
||||
|
||||
bcm_mbox_sc = sc;
|
||||
/* Read all pending messages */
|
||||
bcm_mbox_intr(sc);
|
||||
|
||||
/* Should be called after bcm_mbox_sc initialization */
|
||||
mbox_write_4(REG_CONFIG, CONFIG_DATA_IRQ);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static device_method_t bcm_mbox_methods[] = {
|
||||
DEVMETHOD(device_probe, bcm_mbox_probe),
|
||||
DEVMETHOD(device_attach, bcm_mbox_attach),
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static driver_t bcm_mbox_driver = {
|
||||
"mbox",
|
||||
bcm_mbox_methods,
|
||||
sizeof(struct bcm_mbox_softc),
|
||||
};
|
||||
|
||||
static devclass_t bcm_mbox_devclass;
|
||||
|
||||
DRIVER_MODULE(mbox, simplebus, bcm_mbox_driver, bcm_mbox_devclass, 0, 0);
|
||||
|
||||
/*
|
||||
* Mailbox API
|
||||
*/
|
||||
int
|
||||
bcm_mbox_write(int chan, uint32_t data)
|
||||
{
|
||||
int limit = 20000;
|
||||
|
||||
dprintf("bcm_mbox_write: chan %d, data %08x\n", chan, data);
|
||||
MBOX_LOCK;
|
||||
|
||||
while ((mbox_read_4(REG_STATUS) & STATUS_FULL) && limit--) {
|
||||
DELAY(2);
|
||||
}
|
||||
|
||||
if (limit == 0) {
|
||||
printf("bcm_mbox_write: STATUS_FULL stuck");
|
||||
MBOX_UNLOCK;
|
||||
return (EAGAIN);
|
||||
}
|
||||
|
||||
mbox_write_4(REG_WRITE, MBOX_MSG(chan, data));
|
||||
|
||||
MBOX_UNLOCK;
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
bcm_mbox_read(int chan, uint32_t *data)
|
||||
{
|
||||
struct bcm_mbox_softc *sc = bcm_mbox_sc;
|
||||
|
||||
dprintf("bcm_mbox_read: chan %d\n", chan);
|
||||
MBOX_LOCK;
|
||||
while (!sc->valid[chan])
|
||||
msleep(&sc->msg[chan], &sc->lock, PZERO, "vcio mbox read", 0);
|
||||
*data = bcm_mbox_sc->msg[chan];
|
||||
bcm_mbox_sc->valid[chan] = 0;
|
||||
MBOX_UNLOCK;
|
||||
dprintf("bcm_mbox_read: chan %d, data %08x\n", chan, *data);
|
||||
|
||||
return (0);
|
||||
}
|
||||
44
sys/arm/broadcom/bcm2835/bcm2835_mbox.h
Normal file
44
sys/arm/broadcom/bcm2835/bcm2835_mbox.h
Normal file
@ -0,0 +1,44 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#ifndef _BCM2835_MBOX_H_
|
||||
#define _BCM2835_MBOX_H_
|
||||
|
||||
#define BCM2835_MBOX_CHAN_POWER 0
|
||||
#define BCM2835_MBOX_CHAN_FB 1
|
||||
#define BCM2835_MBOX_CHAN_VUART 2
|
||||
#define BCM2835_MBOX_CHAN_VCHIQ 3
|
||||
#define BCM2835_MBOX_CHAN_LEDS 4
|
||||
#define BCM2835_MBOX_CHAN_BUTTONS 5
|
||||
#define BCM2835_MBOX_CHAN_TS 6
|
||||
#define BCM2835_MBOX_CHANS 7
|
||||
|
||||
int bcm_mbox_write(int chan, uint32_t data);
|
||||
int bcm_mbox_read(int chan, uint32_t *data);
|
||||
|
||||
#endif /* _BCM2835_MBOX_H_ */
|
||||
298
sys/arm/broadcom/bcm2835/bcm2835_systimer.c
Normal file
298
sys/arm/broadcom/bcm2835/bcm2835_systimer.c
Normal file
@ -0,0 +1,298 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
|
||||
* Copyright (c) 2012 Damjan Marion <dmarion@freebsd.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/module.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/rman.h>
|
||||
#include <sys/timeet.h>
|
||||
#include <sys/timetc.h>
|
||||
#include <sys/watchdog.h>
|
||||
#include <machine/bus.h>
|
||||
#include <machine/cpu.h>
|
||||
#include <machine/frame.h>
|
||||
#include <machine/intr.h>
|
||||
|
||||
#include <dev/fdt/fdt_common.h>
|
||||
#include <dev/ofw/openfirm.h>
|
||||
#include <dev/ofw/ofw_bus.h>
|
||||
#include <dev/ofw/ofw_bus_subr.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
#include <machine/fdt.h>
|
||||
|
||||
#define BCM2835_NUM_TIMERS 4
|
||||
|
||||
#define DEFAULT_TIMER 3
|
||||
#define DEFAULT_FREQUENCY 1000000
|
||||
|
||||
#define SYSTIMER_CS 0x00
|
||||
#define SYSTIMER_CLO 0x04
|
||||
#define SYSTIMER_CHI 0x08
|
||||
#define SYSTIMER_C0 0x0C
|
||||
#define SYSTIMER_C1 0x10
|
||||
#define SYSTIMER_C2 0x14
|
||||
#define SYSTIMER_C3 0x18
|
||||
|
||||
struct systimer {
|
||||
int index;
|
||||
bool enabled;
|
||||
struct eventtimer et;
|
||||
};
|
||||
|
||||
struct bcm_systimer_softc {
|
||||
struct resource* mem_res;
|
||||
struct resource* irq_res[BCM2835_NUM_TIMERS];
|
||||
void* intr_hl[BCM2835_NUM_TIMERS];
|
||||
uint32_t sysclk_freq;
|
||||
bus_space_tag_t bst;
|
||||
bus_space_handle_t bsh;
|
||||
struct systimer st[BCM2835_NUM_TIMERS];
|
||||
};
|
||||
|
||||
static struct resource_spec bcm_systimer_irq_spec[] = {
|
||||
{ SYS_RES_IRQ, 0, RF_ACTIVE },
|
||||
{ SYS_RES_IRQ, 1, RF_ACTIVE },
|
||||
{ SYS_RES_IRQ, 2, RF_ACTIVE },
|
||||
{ SYS_RES_IRQ, 3, RF_ACTIVE },
|
||||
{ -1, 0, 0 }
|
||||
};
|
||||
|
||||
static struct bcm_systimer_softc *bcm_systimer_sc = NULL;
|
||||
|
||||
/* Read/Write macros for Timer used as timecounter */
|
||||
#define bcm_systimer_tc_read_4(reg) \
|
||||
bus_space_read_4(bcm_systimer_sc->bst, \
|
||||
bcm_systimer_sc->bsh, reg)
|
||||
|
||||
#define bcm_systimer_tc_write_4(reg, val) \
|
||||
bus_space_write_4(bcm_systimer_sc->bst, \
|
||||
bcm_systimer_sc->bsh, reg, val)
|
||||
|
||||
static unsigned bcm_systimer_tc_get_timecount(struct timecounter *);
|
||||
|
||||
static struct timecounter bcm_systimer_tc = {
|
||||
.tc_name = "BCM2835 Timecouter",
|
||||
.tc_get_timecount = bcm_systimer_tc_get_timecount,
|
||||
.tc_poll_pps = NULL,
|
||||
.tc_counter_mask = ~0u,
|
||||
.tc_frequency = 0,
|
||||
.tc_quality = 1000,
|
||||
};
|
||||
|
||||
static unsigned
|
||||
bcm_systimer_tc_get_timecount(struct timecounter *tc)
|
||||
{
|
||||
return bcm_systimer_tc_read_4(SYSTIMER_CLO);
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_systimer_start(struct eventtimer *et, struct bintime *first,
|
||||
struct bintime *period)
|
||||
{
|
||||
struct systimer *st = et->et_priv;
|
||||
uint32_t clo;
|
||||
uint32_t count;
|
||||
|
||||
if (first != NULL) {
|
||||
st->enabled = 1;
|
||||
|
||||
count = (st->et.et_frequency * (first->frac >> 32)) >> 32;
|
||||
if (first->sec != 0)
|
||||
count += st->et.et_frequency * first->sec;
|
||||
|
||||
clo = bcm_systimer_tc_read_4(SYSTIMER_CLO);
|
||||
clo += count;
|
||||
bcm_systimer_tc_write_4(SYSTIMER_C0 + st->index*4, clo);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
return (EINVAL);
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_systimer_stop(struct eventtimer *et)
|
||||
{
|
||||
struct systimer *st = et->et_priv;
|
||||
st->enabled = 0;
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_systimer_intr(void *arg)
|
||||
{
|
||||
struct systimer *st = (struct systimer *)arg;
|
||||
|
||||
bcm_systimer_tc_write_4(SYSTIMER_CS, (1 << st->index));
|
||||
if (st->enabled) {
|
||||
if (st->et.et_active) {
|
||||
st->et.et_event_cb(&st->et, st->et.et_arg);
|
||||
}
|
||||
}
|
||||
|
||||
return (FILTER_HANDLED);
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_systimer_probe(device_t dev)
|
||||
{
|
||||
|
||||
if (ofw_bus_is_compatible(dev, "broadcom,bcm2835-system-timer")) {
|
||||
device_set_desc(dev, "BCM2835 System Timer");
|
||||
return (BUS_PROBE_DEFAULT);
|
||||
}
|
||||
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
static int
|
||||
bcm_systimer_attach(device_t dev)
|
||||
{
|
||||
struct bcm_systimer_softc *sc = device_get_softc(dev);
|
||||
int err;
|
||||
int rid = 0;
|
||||
|
||||
if (bcm_systimer_sc != NULL)
|
||||
return (EINVAL);
|
||||
|
||||
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
||||
if (sc->mem_res == NULL) {
|
||||
device_printf(dev, "could not allocate memory resource\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
sc->bst = rman_get_bustag(sc->mem_res);
|
||||
sc->bsh = rman_get_bushandle(sc->mem_res);
|
||||
|
||||
/* Request the IRQ resources */
|
||||
err = bus_alloc_resources(dev, bcm_systimer_irq_spec,
|
||||
sc->irq_res);
|
||||
if (err) {
|
||||
device_printf(dev, "Error: could not allocate irq resources\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
/* TODO: get frequency from FDT */
|
||||
sc->sysclk_freq = DEFAULT_FREQUENCY;
|
||||
|
||||
/* Setup and enable the timer */
|
||||
if (bus_setup_intr(dev, sc->irq_res[DEFAULT_TIMER], INTR_TYPE_CLK,
|
||||
bcm_systimer_intr, NULL, &sc->st[DEFAULT_TIMER],
|
||||
&sc->intr_hl[DEFAULT_TIMER]) != 0) {
|
||||
bus_release_resources(dev, bcm_systimer_irq_spec,
|
||||
sc->irq_res);
|
||||
device_printf(dev, "Unable to setup the clock irq handler.\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
sc->st[DEFAULT_TIMER].index = DEFAULT_TIMER;
|
||||
sc->st[DEFAULT_TIMER].enabled = 0;
|
||||
sc->st[DEFAULT_TIMER].et.et_name = malloc(64, M_DEVBUF, M_NOWAIT | M_ZERO);
|
||||
sprintf(sc->st[DEFAULT_TIMER].et.et_name, "BCM2835 Event Timer %d", DEFAULT_TIMER);
|
||||
sc->st[DEFAULT_TIMER].et.et_flags = ET_FLAGS_ONESHOT;
|
||||
sc->st[DEFAULT_TIMER].et.et_quality = 1000;
|
||||
sc->st[DEFAULT_TIMER].et.et_frequency = sc->sysclk_freq;
|
||||
sc->st[DEFAULT_TIMER].et.et_min_period.sec = 0;
|
||||
sc->st[DEFAULT_TIMER].et.et_min_period.frac =
|
||||
((0x00000002LLU << 32) / sc->st[DEFAULT_TIMER].et.et_frequency) << 32;
|
||||
sc->st[DEFAULT_TIMER].et.et_max_period.sec = 0xfffffff0U / sc->st[DEFAULT_TIMER].et.et_frequency;
|
||||
sc->st[DEFAULT_TIMER].et.et_max_period.frac =
|
||||
((0xfffffffeLLU << 32) / sc->st[DEFAULT_TIMER].et.et_frequency) << 32;
|
||||
sc->st[DEFAULT_TIMER].et.et_start = bcm_systimer_start;
|
||||
sc->st[DEFAULT_TIMER].et.et_stop = bcm_systimer_stop;
|
||||
sc->st[DEFAULT_TIMER].et.et_priv = &sc->st[DEFAULT_TIMER];
|
||||
et_register(&sc->st[DEFAULT_TIMER].et);
|
||||
|
||||
bcm_systimer_sc = sc;
|
||||
|
||||
bcm_systimer_tc.tc_frequency = DEFAULT_FREQUENCY;
|
||||
tc_init(&bcm_systimer_tc);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static device_method_t bcm_systimer_methods[] = {
|
||||
DEVMETHOD(device_probe, bcm_systimer_probe),
|
||||
DEVMETHOD(device_attach, bcm_systimer_attach),
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static driver_t bcm_systimer_driver = {
|
||||
"systimer",
|
||||
bcm_systimer_methods,
|
||||
sizeof(struct bcm_systimer_softc),
|
||||
};
|
||||
|
||||
static devclass_t bcm_systimer_devclass;
|
||||
|
||||
DRIVER_MODULE(bcm_systimer, simplebus, bcm_systimer_driver, bcm_systimer_devclass, 0, 0);
|
||||
|
||||
void
|
||||
cpu_initclocks(void)
|
||||
{
|
||||
cpu_initclocks_bsp();
|
||||
}
|
||||
|
||||
void
|
||||
DELAY(int usec)
|
||||
{
|
||||
int32_t counts;
|
||||
uint32_t first, last;
|
||||
|
||||
if (bcm_systimer_sc == NULL) {
|
||||
for (; usec > 0; usec--)
|
||||
for (counts = 200; counts > 0; counts--)
|
||||
/* Prevent gcc from optimizing out the loop */
|
||||
cpufunc_nullop();
|
||||
return;
|
||||
}
|
||||
|
||||
/* Get the number of times to count */
|
||||
counts = usec * ((bcm_systimer_tc.tc_frequency / 1000000) + 1);;
|
||||
|
||||
first = bcm_systimer_tc_read_4(SYSTIMER_CLO);
|
||||
|
||||
while (counts > 0) {
|
||||
last = bcm_systimer_tc_read_4(SYSTIMER_CLO);
|
||||
if (last == first)
|
||||
continue;
|
||||
if (last>first) {
|
||||
counts -= (int32_t)(last - first);
|
||||
} else {
|
||||
counts -= (int32_t)((0xFFFFFFFF - first) + last);
|
||||
}
|
||||
first = last;
|
||||
}
|
||||
}
|
||||
52
sys/arm/broadcom/bcm2835/bcm2835_vcbus.h
Normal file
52
sys/arm/broadcom/bcm2835/bcm2835_vcbus.h
Normal file
@ -0,0 +1,52 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
/*
|
||||
* Defines for converting physical address to VideoCore bus address and back
|
||||
*/
|
||||
|
||||
#ifndef _BCM2835_VCBUS_H_
|
||||
#define _BCM2835_VCBUS_H_
|
||||
|
||||
#define BCM2835_VCBUS_SDRAM_CACHED 0x40000000
|
||||
#define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000
|
||||
|
||||
/*
|
||||
* Convert physical address to VC bus address. Should be used
|
||||
* when submitting address over mailbox interface
|
||||
*/
|
||||
#define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_CACHED)
|
||||
|
||||
/*
|
||||
* Convert address from VC bus space to physical. Should be used
|
||||
* when address is returned by VC over mailbox interface. e.g.
|
||||
* framebuffer base
|
||||
*/
|
||||
#define VCBUS_TO_PHYS(vca) ((vca) - BCM2835_VCBUS_SDRAM_CACHED)
|
||||
|
||||
#endif /* _BCM2835_VCBUS_H_ */
|
||||
167
sys/arm/broadcom/bcm2835/bcm2835_wdog.c
Normal file
167
sys/arm/broadcom/bcm2835/bcm2835_wdog.c
Normal file
@ -0,0 +1,167 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Alexander Rybalko <ray@freebsd.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/watchdog.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/module.h>
|
||||
#include <sys/rman.h>
|
||||
|
||||
#include <dev/fdt/fdt_common.h>
|
||||
#include <dev/ofw/openfirm.h>
|
||||
#include <dev/ofw/ofw_bus.h>
|
||||
#include <dev/ofw/ofw_bus_subr.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
#include <machine/cpufunc.h>
|
||||
#include <machine/machdep.h>
|
||||
#include <machine/fdt.h>
|
||||
|
||||
#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
|
||||
|
||||
#define BCM2835_PASWORD 0x5a
|
||||
|
||||
#define BCM2835_WDOG_RESET 0
|
||||
#define BCM2835_PASSWORD_MASK 0xff000000
|
||||
#define BCM2835_PASSWORD_SHIFT 24
|
||||
#define BCM2835_WDOG_TIME_MASK 0x000fffff
|
||||
#define BCM2835_WDOG_TIME_SHIFT 0
|
||||
|
||||
#define READ(_sc, _r) bus_space_read_4((_sc)->bst, (_sc)->bsh, (_r))
|
||||
#define WRITE(_sc, _r, _v) bus_space_write_4((_sc)->bst, (_sc)->bsh, (_r), (_v))
|
||||
|
||||
#define BCM2835_RSTC_WRCFG_CLR 0xffffffcf
|
||||
#define BCM2835_RSTC_WRCFG_SET 0x00000030
|
||||
#define BCM2835_RSTC_WRCFG_FULL_RESET 0x00000020
|
||||
#define BCM2835_RSTC_RESET 0x00000102
|
||||
|
||||
#define BCM2835_RSTC_REG 0x00
|
||||
#define BCM2835_RSTS_REG 0x04
|
||||
#define BCM2835_WDOG_REG 0x08
|
||||
|
||||
static struct bcmwd_softc *bcmwd_lsc = NULL;
|
||||
|
||||
struct bcmwd_softc {
|
||||
device_t dev;
|
||||
struct resource * res;
|
||||
bus_space_tag_t bst;
|
||||
bus_space_handle_t bsh;
|
||||
int wdog_armed;
|
||||
int wdog_period;
|
||||
char wdog_passwd;
|
||||
};
|
||||
|
||||
#ifdef notyet
|
||||
static void bcmwd_watchdog_fn(void *private, u_int cmd, int *error);
|
||||
#endif
|
||||
|
||||
static int
|
||||
bcmwd_probe(device_t dev)
|
||||
{
|
||||
|
||||
if (ofw_bus_is_compatible(dev, "broadcom,bcm2835-wdt")) {
|
||||
device_set_desc(dev, "BCM2708/2835 Watchdog");
|
||||
return (BUS_PROBE_DEFAULT);
|
||||
}
|
||||
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
static int
|
||||
bcmwd_attach(device_t dev)
|
||||
{
|
||||
struct bcmwd_softc *sc;
|
||||
int rid;
|
||||
|
||||
if (bcmwd_lsc != NULL)
|
||||
return (ENXIO);
|
||||
|
||||
sc = device_get_softc(dev);
|
||||
sc->wdog_period = 7;
|
||||
sc->wdog_passwd = BCM2835_PASWORD;
|
||||
sc->wdog_armed = 0;
|
||||
sc->dev = dev;
|
||||
|
||||
rid = 0;
|
||||
sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
||||
if (sc->res == NULL) {
|
||||
device_printf(dev, "could not allocate memory resource\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
sc->bst = rman_get_bustag(sc->res);
|
||||
sc->bsh = rman_get_bushandle(sc->res);
|
||||
|
||||
bcmwd_lsc = sc;
|
||||
#ifdef notyet
|
||||
EVENTHANDLER_REGISTER(watchdog_list, bcmwd_watchdog_fn, sc, 0);
|
||||
#endif
|
||||
return (0);
|
||||
}
|
||||
|
||||
#ifdef notyet
|
||||
static void
|
||||
bcmwd_watchdog_fn(void *private, u_int cmd, int *error)
|
||||
{
|
||||
/* XXX: not yet */
|
||||
}
|
||||
#endif
|
||||
|
||||
void
|
||||
bcmwd_watchdog_reset()
|
||||
{
|
||||
|
||||
if (bcmwd_lsc == NULL)
|
||||
return;
|
||||
|
||||
WRITE(bcmwd_lsc, BCM2835_WDOG_REG,
|
||||
(BCM2835_PASWORD << BCM2835_PASSWORD_SHIFT) | 10);
|
||||
|
||||
WRITE(bcmwd_lsc, BCM2835_RSTC_REG,
|
||||
(READ(bcmwd_lsc, BCM2835_RSTC_REG) & BCM2835_RSTC_WRCFG_CLR) |
|
||||
(BCM2835_PASWORD << BCM2835_PASSWORD_SHIFT) |
|
||||
BCM2835_RSTC_WRCFG_FULL_RESET);
|
||||
}
|
||||
|
||||
static device_method_t bcmwd_methods[] = {
|
||||
DEVMETHOD(device_probe, bcmwd_probe),
|
||||
DEVMETHOD(device_attach, bcmwd_attach),
|
||||
|
||||
DEVMETHOD_END
|
||||
};
|
||||
|
||||
static driver_t bcmwd_driver = {
|
||||
"bcmwd",
|
||||
bcmwd_methods,
|
||||
sizeof(struct bcmwd_softc),
|
||||
};
|
||||
static devclass_t bcmwd_devclass;
|
||||
|
||||
DRIVER_MODULE(bcmwd, simplebus, bcmwd_driver, bcmwd_devclass, 0, 0);
|
||||
32
sys/arm/broadcom/bcm2835/bcm2835_wdog.h
Normal file
32
sys/arm/broadcom/bcm2835/bcm2835_wdog.h
Normal file
@ -0,0 +1,32 @@
|
||||
/*-
|
||||
* Copyright (c) 2012 Alexander Rybalko <ray@freebsd.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
#ifndef _BCM2835_WDOG_H_
|
||||
#define _BCM2835_WDOG_H_
|
||||
|
||||
void bcmwd_watchdog_reset(void);
|
||||
#endif
|
||||
113
sys/arm/broadcom/bcm2835/bus_space.c
Normal file
113
sys/arm/broadcom/bcm2835/bus_space.c
Normal file
@ -0,0 +1,113 @@
|
||||
/*-
|
||||
* Copyright (C) 2012 FreeBSD Foundation
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of MARVELL nor the names of contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/malloc.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
/* Prototypes for all the bus_space structure functions */
|
||||
bs_protos(generic);
|
||||
bs_protos(generic_armv4);
|
||||
|
||||
struct bus_space _base_tag = {
|
||||
/* cookie */
|
||||
.bs_cookie = (void *) 0,
|
||||
|
||||
/* mapping/unmapping */
|
||||
.bs_map = generic_bs_map,
|
||||
.bs_unmap = generic_bs_unmap,
|
||||
.bs_subregion = generic_bs_subregion,
|
||||
|
||||
/* allocation/deallocation */
|
||||
.bs_alloc = generic_bs_alloc,
|
||||
.bs_free = generic_bs_free,
|
||||
|
||||
/* barrier */
|
||||
.bs_barrier = generic_bs_barrier,
|
||||
|
||||
/* read (single) */
|
||||
.bs_r_1 = generic_bs_r_1,
|
||||
.bs_r_2 = generic_armv4_bs_r_2,
|
||||
.bs_r_4 = generic_bs_r_4,
|
||||
.bs_r_8 = NULL,
|
||||
|
||||
/* read multiple */
|
||||
.bs_rm_1 = generic_bs_rm_1,
|
||||
.bs_rm_2 = generic_armv4_bs_rm_2,
|
||||
.bs_rm_4 = generic_bs_rm_4,
|
||||
.bs_rm_8 = NULL,
|
||||
|
||||
/* read region */
|
||||
.bs_rr_1 = generic_bs_rr_1,
|
||||
.bs_rr_2 = generic_armv4_bs_rr_2,
|
||||
.bs_rr_4 = generic_bs_rr_4,
|
||||
.bs_rr_8 = NULL,
|
||||
|
||||
/* write (single) */
|
||||
.bs_w_1 = generic_bs_w_1,
|
||||
.bs_w_2 = generic_armv4_bs_w_2,
|
||||
.bs_w_4 = generic_bs_w_4,
|
||||
.bs_w_8 = NULL,
|
||||
|
||||
/* write multiple */
|
||||
.bs_wm_1 = generic_bs_wm_1,
|
||||
.bs_wm_2 = generic_armv4_bs_wm_2,
|
||||
.bs_wm_4 = generic_bs_wm_4,
|
||||
.bs_wm_8 = NULL,
|
||||
|
||||
/* write region */
|
||||
.bs_wr_1 = generic_bs_wr_1,
|
||||
.bs_wr_2 = generic_armv4_bs_wr_2,
|
||||
.bs_wr_4 = generic_bs_wr_4,
|
||||
.bs_wr_8 = NULL,
|
||||
|
||||
/* set multiple */
|
||||
/* XXX not implemented */
|
||||
|
||||
/* set region */
|
||||
.bs_sr_1 = NULL,
|
||||
.bs_sr_2 = generic_armv4_bs_sr_2,
|
||||
.bs_sr_4 = generic_bs_sr_4,
|
||||
.bs_sr_8 = NULL,
|
||||
|
||||
/* copy */
|
||||
.bs_c_1 = NULL,
|
||||
.bs_c_2 = generic_armv4_bs_c_2,
|
||||
.bs_c_4 = NULL,
|
||||
.bs_c_8 = NULL,
|
||||
};
|
||||
|
||||
bus_space_tag_t fdtbus_bs_tag = &_base_tag;
|
||||
75
sys/arm/broadcom/bcm2835/common.c
Normal file
75
sys/arm/broadcom/bcm2835/common.c
Normal file
@ -0,0 +1,75 @@
|
||||
/*-
|
||||
* Copyright (C) 2008-2011 MARVELL INTERNATIONAL LTD.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Developed by Semihalf.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of MARVELL nor the names of contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include "opt_global.h"
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/kdb.h>
|
||||
#include <sys/reboot.h>
|
||||
|
||||
#include <dev/fdt/fdt_common.h>
|
||||
#include <dev/ofw/openfirm.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
#include <machine/fdt.h>
|
||||
#include <machine/vmparam.h>
|
||||
|
||||
struct fdt_fixup_entry fdt_fixup_table[] = {
|
||||
{ NULL, NULL }
|
||||
};
|
||||
|
||||
static int
|
||||
fdt_intc_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
|
||||
int *pol)
|
||||
{
|
||||
|
||||
if (!fdt_is_compatible(node, "broadcom,bcm2835-armctrl-ic"))
|
||||
return (ENXIO);
|
||||
|
||||
*interrupt = fdt32_to_cpu(intr[0]);
|
||||
*trig = INTR_TRIGGER_CONFORM;
|
||||
*pol = INTR_POLARITY_CONFORM;
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
||||
fdt_pic_decode_t fdt_pic_table[] = {
|
||||
&fdt_intc_decode_ic,
|
||||
NULL
|
||||
};
|
||||
19
sys/arm/broadcom/bcm2835/files.bcm2835
Normal file
19
sys/arm/broadcom/bcm2835/files.bcm2835
Normal file
@ -0,0 +1,19 @@
|
||||
# $FreeBSD$
|
||||
|
||||
arm/broadcom/bcm2835/bcm2835_fb.c optional sc
|
||||
arm/broadcom/bcm2835/bcm2835_intr.c standard
|
||||
arm/broadcom/bcm2835/bcm2835_machdep.c standard
|
||||
arm/broadcom/bcm2835/bcm2835_mbox.c standard
|
||||
arm/broadcom/bcm2835/bcm2835_systimer.c standard
|
||||
arm/broadcom/bcm2835/bcm2835_wdog.c standard
|
||||
arm/broadcom/bcm2835/bus_space.c optional fdt
|
||||
arm/broadcom/bcm2835/common.c optional fdt
|
||||
|
||||
arm/arm/bus_space_generic.c standard
|
||||
arm/arm/bus_space_asm_generic.S standard
|
||||
arm/arm/cpufunc_asm_arm11.S standard
|
||||
arm/arm/cpufunc_asm_armv5.S standard
|
||||
arm/arm/cpufunc_asm_armv6.S standard
|
||||
arm/arm/irq_dispatch.S standard
|
||||
|
||||
kern/kern_clocksource.c standard
|
||||
101
sys/arm/conf/RPI-B
Normal file
101
sys/arm/conf/RPI-B
Normal file
@ -0,0 +1,101 @@
|
||||
# RPI-B -- Custom configuration for the Raspberry Pi
|
||||
#
|
||||
# For more information on this file, please read the handbook section on
|
||||
# Kernel Configuration Files:
|
||||
#
|
||||
# http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
|
||||
#
|
||||
# The handbook is also available locally in /usr/share/doc/handbook
|
||||
# if you've installed the doc distribution, otherwise always see the
|
||||
# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
|
||||
# latest information.
|
||||
#
|
||||
# An exhaustive list of options and more detailed explanations of the
|
||||
# device lines is also present in the ../../conf/NOTES and NOTES files.
|
||||
# If you are in doubt as to the purpose or necessity of a line, check first
|
||||
# in NOTES.
|
||||
#
|
||||
# $FreeBSD$
|
||||
|
||||
ident RPI-B
|
||||
machine arm armv6
|
||||
cpu CPU_ARM11
|
||||
|
||||
files "../broadcom/bcm2835/files.bcm2835"
|
||||
makeoptions MODULES_OVERRIDE=""
|
||||
|
||||
options KERNVIRTADDR=0xc0100000
|
||||
makeoptions KERNVIRTADDR=0xc0100000
|
||||
options KERNPHYSADDR=0x00100000
|
||||
makeoptions KERNPHYSADDR=0x00100000
|
||||
options PHYSADDR=0x00000000
|
||||
options STARTUP_PAGETABLE_ADDR=0x01000000
|
||||
|
||||
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
|
||||
options HZ=100
|
||||
|
||||
options SCHED_4BSD #4BSD scheduler
|
||||
options INET #InterNETworking
|
||||
options FFS #Berkeley Fast Filesystem
|
||||
options SOFTUPDATES #Enable FFS soft updates support
|
||||
options UFS_ACL #Support for access control lists
|
||||
options UFS_DIRHASH #Improve performance on big directories
|
||||
device snp
|
||||
|
||||
# options NFSCL #Network Filesystem Client
|
||||
# options NFS_ROOT #NFS usable as /, requires NFSCLIENT
|
||||
# options BOOTP_NFSROOT
|
||||
# options BOOTP_COMPAT
|
||||
# options BOOTP
|
||||
# options BOOTP_NFSV3
|
||||
# options BOOTP_WIRED_TO=ue0
|
||||
|
||||
options PSEUDOFS #Pseudo-filesystem framework
|
||||
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
|
||||
options SCSI_DELAY=5000 #Delay (in ms) before probing SCSI
|
||||
options KTRACE #ktrace(1) support
|
||||
options SYSVSHM #SYSV-style shared memory
|
||||
options SYSVMSG #SYSV-style message queues
|
||||
options SYSVSEM #SYSV-style semaphores
|
||||
options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
|
||||
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
|
||||
|
||||
options PREEMPTION
|
||||
|
||||
device bpf
|
||||
device loop
|
||||
device ether
|
||||
device uart
|
||||
device pl011
|
||||
|
||||
device pty
|
||||
|
||||
# NOTE: serial console will be disabled if syscons enabled
|
||||
# Uncomment following lines for framebuffer/syscons support
|
||||
# device sc
|
||||
# device kbdmux
|
||||
# options SC_DFLT_FONT # compile font in
|
||||
# makeoptions SC_DFLT_FONT=cp437
|
||||
|
||||
options KDB
|
||||
options DDB #Enable the kernel debugger
|
||||
options INVARIANTS #Enable calls of extra sanity checking
|
||||
options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS
|
||||
|
||||
device md
|
||||
device random # Entropy device
|
||||
|
||||
# Not yet: USB support
|
||||
# device usb
|
||||
# options USB_DEBUG
|
||||
|
||||
|
||||
# Not yet: USB Ethernet support, requires miibus
|
||||
# device mii
|
||||
# device smc
|
||||
# device smcphy
|
||||
|
||||
# Flattened Device Tree
|
||||
options FDT
|
||||
options FDT_DTB_STATIC
|
||||
makeoptions FDT_DTS_FILE=bcm2835-rpi-b.dts
|
||||
564
sys/boot/fdt/dts/bcm2835-rpi-b.dts
Normal file
564
sys/boot/fdt/dts/bcm2835-rpi-b.dts
Normal file
@ -0,0 +1,564 @@
|
||||
/*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
/dts-v1/;
|
||||
/memreserve/ 0x08000000 0x08000000; /* Set by VideoCore */
|
||||
|
||||
/ {
|
||||
model = "Raspberry Pi Model B (BCM2835)";
|
||||
#address-cells = <1>;
|
||||
#size-cells = <1>;
|
||||
compatible = "raspberrypi,model-b", "broadcom,bcm2835-vc", "broadcom,bcm2708-vc";
|
||||
|
||||
system {
|
||||
revision = <0>; /* Set by VideoCore */
|
||||
serial = <0 0>; /* Set by VideoCore */
|
||||
};
|
||||
|
||||
cpus {
|
||||
cpu@0 {
|
||||
compatible = "arm,1176jzf-s";
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
axi {
|
||||
compatible = "simple-bus";
|
||||
#address-cells = <1>;
|
||||
#size-cells = <1>;
|
||||
reg = <0x20000000 0x01000000>;
|
||||
ranges = <0 0x20000000 0x01000000>;
|
||||
|
||||
intc: interrupt-controller {
|
||||
compatible = "broadcom,bcm2835-armctrl-ic", "broadcom,bcm2708-armctrl-ic";
|
||||
reg = <0xB200 0x200>;
|
||||
|
||||
interrupt-controller;
|
||||
#interrupt-cells = <1>;
|
||||
|
||||
/* Bank 0
|
||||
* 0: ARM_TIMER
|
||||
* 1: ARM_MAILBOX
|
||||
* 2: ARM_DOORBELL_0
|
||||
* 3: ARM_DOORBELL_1
|
||||
* 4: VPU0_HALTED
|
||||
* 5: VPU1_HALTED
|
||||
* 6: ILLEGAL_TYPE0
|
||||
* 7: ILLEGAL_TYPE1
|
||||
*/
|
||||
|
||||
/* Bank 1
|
||||
* 0: TIMER0 16: DMA0
|
||||
* 1: TIMER1 17: DMA1
|
||||
* 2: TIMER2 18: VC_DMA2
|
||||
* 3: TIMER3 19: VC_DMA3
|
||||
* 4: CODEC0 20: DMA4
|
||||
* 5: CODEC1 21: DMA5
|
||||
* 6: CODEC2 22: DMA6
|
||||
* 7: VC_JPEG 23: DMA7
|
||||
* 8: ISP 24: DMA8
|
||||
* 9: VC_USB 25: DMA9
|
||||
* 10: VC_3D 26: DMA10
|
||||
* 11: TRANSPOSER 27: DMA11
|
||||
* 12: MULTICORESYNC0 28: DMA12
|
||||
* 13: MULTICORESYNC1 29: AUX
|
||||
* 14: MULTICORESYNC2 30: ARM
|
||||
* 15: MULTICORESYNC3 31: VPUDMA
|
||||
*/
|
||||
|
||||
/* Bank 2
|
||||
* 0: HOSTPORT 16: SMI
|
||||
* 1: VIDEOSCALER 17: GPIO0
|
||||
* 2: CCP2TX 18: GPIO1
|
||||
* 3: SDC 19: GPIO2
|
||||
* 4: DSI0 20: GPIO3
|
||||
* 5: AVE 21: VC_I2C
|
||||
* 6: CAM0 22: VC_SPI
|
||||
* 7: CAM1 23: VC_I2SPCM
|
||||
* 8: HDMI0 24: VC_SDIO
|
||||
* 9: HDMI1 25: VC_UART
|
||||
* 10: PIXELVALVE1 26: SLIMBUS
|
||||
* 11: I2CSPISLV 27: VEC
|
||||
* 12: DSI1 28: CPG
|
||||
* 13: PWA0 29: RNG
|
||||
* 14: PWA1 30: VC_ARASANSDIO
|
||||
* 15: CPR 31: AVSPMON
|
||||
*/
|
||||
};
|
||||
|
||||
timer {
|
||||
compatible = "broadcom,bcm2835-system-timer", "broadcom,bcm2708-system-timer";
|
||||
reg = <0x3000 0x1000>;
|
||||
interrupts = <8 9 10 11>;
|
||||
interrupt-parent = <&intc>;
|
||||
|
||||
clock-frequency = <1000000>;
|
||||
};
|
||||
|
||||
dma: dma {
|
||||
compatible = "broadcom,bcm2835-dma", "broadcom,bcm2708-dma";
|
||||
reg = <0x7000 0x1000>, <0xE05000 0x1000>;
|
||||
interrupts = <
|
||||
26 /* 2 */
|
||||
27 /* 3 */
|
||||
>;
|
||||
interrupt-parent = <&intc>;
|
||||
|
||||
broadcom,channels = <0>; /* Set by VideoCore */
|
||||
};
|
||||
|
||||
sdhci {
|
||||
compatible = "broadcom,bcm2835-sdhci", "broadcom,bcm2708-sdhci";
|
||||
reg = <0x300000 0x100>;
|
||||
interrupts = <70>;
|
||||
interrupt-parent = <&intc>;
|
||||
|
||||
clock-frequency = <50000000>; /* Set by VideoCore */
|
||||
};
|
||||
|
||||
armtimer {
|
||||
/* Not AMBA compatible */
|
||||
compatible = "broadcom,bcm2835-sp804", "arm,sp804";
|
||||
reg = <0xB400 0x24>;
|
||||
interrupts = <0>;
|
||||
interrupt-parent = <&intc>;
|
||||
};
|
||||
|
||||
vc_mbox: mbox {
|
||||
compatible = "broadcom,bcm2835-mbox", "broadcom,bcm2708-mbox";
|
||||
reg = <0xB880 0x40>;
|
||||
interrupts = <1>;
|
||||
interrupt-parent = <&intc>;
|
||||
|
||||
/* Channels
|
||||
* 0: Power
|
||||
* 1: Frame buffer
|
||||
* 2: Virtual UART
|
||||
* 3: VCHIQ
|
||||
* 4: LEDs
|
||||
* 5: Buttons
|
||||
* 6: Touch screen
|
||||
*/
|
||||
};
|
||||
|
||||
watchdog0 {
|
||||
compatible = "broadcom,bcm2835-wdt", "broadcom,bcm2708-wdt";
|
||||
reg = <0x10001c 0x0c>; /* 0x1c, 0x20, 0x24 */
|
||||
};
|
||||
|
||||
gpio: gpio {
|
||||
compatible = "broadcom,bcm2835-gpio", "broadcom,bcm2708-gpio";
|
||||
reg = <0x200000 0xb0>;
|
||||
|
||||
/* Unusual arrangement of interrupts (determined by testing)
|
||||
* 17: Bank 0 (GPIOs 0-31)
|
||||
* 19: Bank 1 (GPIOs 32-53)
|
||||
* 18: Bank 2
|
||||
* 20: All banks (GPIOs 0-53)
|
||||
*/
|
||||
interrupts = <57 59 58 60>;
|
||||
interrupt-parent = <&intc>;
|
||||
|
||||
gpio-controller;
|
||||
#gpio-cells = <2>;
|
||||
|
||||
interrupt-controller;
|
||||
#interrupt-cells = <1>;
|
||||
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <&pins_reserved>;
|
||||
|
||||
/* pins that can short 3.3V to GND in output mode: 46-47
|
||||
* pins used by VideoCore: 48-53
|
||||
*/
|
||||
broadcom,read-only = <46>, <47>, <48>, <49>, <50>, <51>, <52>, <53>;
|
||||
|
||||
/* BSC0 */
|
||||
pins_bsc0_a: bsc0_a {
|
||||
broadcom,pins = <0>, <1>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_bsc0_b: bsc0_b {
|
||||
broadcom,pins = <28>, <29>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_bsc0_c: bsc0_c {
|
||||
broadcom,pins = <44>, <45>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
/* BSC1 */
|
||||
pins_bsc1_a: bsc1_a {
|
||||
broadcom,pins = <2>, <3>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_bsc1_b: bsc1_b {
|
||||
broadcom,pins = <44>, <45>;
|
||||
broadcom,function = "ALT2";
|
||||
};
|
||||
|
||||
/* GPCLK0 */
|
||||
pins_gpclk0_a: gpclk0_a {
|
||||
broadcom,pins = <4>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_gpclk0_b: gpclk0_b {
|
||||
broadcom,pins = <20>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_gpclk0_c: gpclk0_c {
|
||||
broadcom,pins = <32>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_gpclk0_d: gpclk0_d {
|
||||
broadcom,pins = <34>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
/* GPCLK1 */
|
||||
pins_gpclk1_a: gpclk1_a {
|
||||
broadcom,pins = <5>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_gpclk1_b: gpclk1_b {
|
||||
broadcom,pins = <21>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_gpclk1_c: gpclk1_c {
|
||||
broadcom,pins = <42>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_gpclk1_d: gpclk1_d {
|
||||
broadcom,pins = <44>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
/* GPCLK2 */
|
||||
pins_gpclk2_a: gpclk2_a {
|
||||
broadcom,pins = <6>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_gpclk2_b: gpclk2_b {
|
||||
broadcom,pins = <43>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
/* SPI0 */
|
||||
pins_spi0_a: spi0_a {
|
||||
broadcom,pins = <7>, <8>, <9>, <10>, <11>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_spi0_b: spi0_b {
|
||||
broadcom,pins = <35>, <36>, <37>, <38>, <39>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
/* PWM */
|
||||
pins_pwm0_a: pwm0_a {
|
||||
broadcom,pins = <12>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_pwm0_b: pwm0_b {
|
||||
broadcom,pins = <18>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_pwm0_c: pwm0_c {
|
||||
broadcom,pins = <40>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_pwm1_a: pwm1_a {
|
||||
broadcom,pins = <13>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_pwm1_b: pwm1_b {
|
||||
broadcom,pins = <19>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_pwm1_c: pwm1_c {
|
||||
broadcom,pins = <41>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_pwm1_d: pwm1_d {
|
||||
broadcom,pins = <45>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
/* UART0 */
|
||||
pins_uart0_a: uart0_a {
|
||||
broadcom,pins = <14>, <15>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_uart0_b: uart0_b {
|
||||
broadcom,pins = <32>, <33>;
|
||||
broadcom,function = "ALT3";
|
||||
};
|
||||
|
||||
pins_uart0_c: uart0_c {
|
||||
broadcom,pins = <36>, <37>;
|
||||
broadcom,function = "ALT2";
|
||||
};
|
||||
|
||||
pins_uart0_fc_a: uart0_fc_a {
|
||||
broadcom,pins = <16>, <17>;
|
||||
broadcom,function = "ALT3";
|
||||
};
|
||||
|
||||
pins_uart0_fc_b: uart0_fc_b {
|
||||
broadcom,pins = <30>, <31>;
|
||||
broadcom,function = "ALT3";
|
||||
};
|
||||
|
||||
pins_uart0_fc_c: uart0_fc_c {
|
||||
broadcom,pins = <39>, <38>;
|
||||
broadcom,function = "ALT2";
|
||||
};
|
||||
|
||||
/* PCM */
|
||||
pins_pcm_a: pcm_a {
|
||||
broadcom,pins = <18>, <19>, <20>, <21>;
|
||||
broadcom,function = "ALT0";
|
||||
};
|
||||
|
||||
pins_pcm_b: pcm_b {
|
||||
broadcom,pins = <28>, <29>, <30>, <31>;
|
||||
broadcom,function = "ALT2";
|
||||
};
|
||||
|
||||
/* Secondary Address Bus */
|
||||
pins_sm_addr_a: sm_addr_a {
|
||||
broadcom,pins = <5>, <4>, <3>, <2>, <1>, <0>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
pins_sm_addr_b: sm_addr_b {
|
||||
broadcom,pins = <33>, <32>, <31>, <30>, <29>, <28>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
pins_sm_ctl_a: sm_ctl_a {
|
||||
broadcom,pins = <6>, <7>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
pins_sm_ctl_b: sm_ctl_b {
|
||||
broadcom,pins = <34>, <35>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
pins_sm_data_8bit_a: sm_data_8bit_a {
|
||||
broadcom,pins = <8>, <9>, <10>, <11>, <12>, <13>, <14>, <15>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
pins_sm_data_8bit_b: sm_data_8bit_b {
|
||||
broadcom,pins = <36>, <37>, <38>, <39>, <40>, <41>, <42>, <43>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
pins_sm_data_16bit: sm_data_16bit {
|
||||
broadcom,pins = <16>, <17>, <18>, <19>, <20>, <21>, <22>, <23>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
pins_sm_data_18bit: sm_data_18bit {
|
||||
broadcom,pins = <24>, <25>;
|
||||
broadcom,function = "ALT1";
|
||||
};
|
||||
|
||||
/* BSCSL */
|
||||
pins_bscsl: bscsl {
|
||||
broadcom,pins = <18>, <19>;
|
||||
broadcom,function = "ALT3";
|
||||
};
|
||||
|
||||
/* SPISL */
|
||||
pins_spisl: spisl {
|
||||
broadcom,pins = <18>, <19>, <20>, <21>;
|
||||
broadcom,function = "ALT3";
|
||||
};
|
||||
|
||||
/* SPI1 */
|
||||
pins_spi1: spi1 {
|
||||
broadcom,pins = <16>, <17>, <18>, <19>, <20>, <21>;
|
||||
broadcom,function = "ALT4";
|
||||
};
|
||||
|
||||
/* UART1 */
|
||||
pins_uart1_a: uart1_a {
|
||||
broadcom,pins = <14>, <15>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_uart1_b: uart1_b {
|
||||
broadcom,pins = <32>, <33>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_uart1_c: uart1_c {
|
||||
broadcom,pins = <40>, <41>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_uart1_fc_a: uart1_fc_a {
|
||||
broadcom,pins = <16>, <17>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_uart1_fc_b: uart1_fc_b {
|
||||
broadcom,pins = <30>, <31>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_uart1_fc_c: uart1_fc_c {
|
||||
broadcom,pins = <43>, <42>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
/* SPI2 */
|
||||
pins_spi2: spi2 {
|
||||
broadcom,pins = <40>, <41>, <42>, <43>, <44>, <45>;
|
||||
broadcom,function = "ALT4";
|
||||
};
|
||||
|
||||
/* ARM JTAG */
|
||||
pins_arm_jtag_trst: arm_jtag_trst {
|
||||
broadcom,pins = <22>;
|
||||
broadcom,function = "ALT4";
|
||||
};
|
||||
|
||||
pins_arm_jtag_a: arm_jtag_a {
|
||||
broadcom,pins = <4>, <5>, <6>, <12>, <13>;
|
||||
broadcom,function = "ALT5";
|
||||
};
|
||||
|
||||
pins_arm_jtag_b: arm_jtag_b {
|
||||
broadcom,pins = <23>, <24>, <25>, <26>, <27>;
|
||||
broadcom,function = "ALT4";
|
||||
};
|
||||
|
||||
/* Reserved */
|
||||
pins_reserved: reserved {
|
||||
broadcom,pins = <48>, <49>, <50>, <51>, <52>, <53>;
|
||||
broadcom,function = "ALT3";
|
||||
};
|
||||
};
|
||||
|
||||
uart0: uart0 {
|
||||
compatible = "broadcom,bcm2835-uart", "broadcom,bcm2708-uart", "arm,pl011", "arm,primecell";
|
||||
reg = <0x201000 0x1000>;
|
||||
interrupts = <65>;
|
||||
interrupt-parent = <&intc>;
|
||||
|
||||
clock-frequency = <3000000>; /* Set by VideoCore */
|
||||
reg-shift = <2>;
|
||||
};
|
||||
|
||||
usb {
|
||||
compatible = "broadcom,bcm2835-usb", "broadcom,bcm2708-usb", "synopsys,designware-hs-otg2";
|
||||
reg = <0x980000 0x20000>;
|
||||
interrupts = <17>;
|
||||
interrupt-parent = <&intc>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
};
|
||||
|
||||
display {
|
||||
compatible = "broadcom,bcm2835-fb", "broadcom,bcm2708-fb";
|
||||
|
||||
broadcom,vc-mailbox = <&vc_mbox>;
|
||||
broadcom,vc-channel = <1>;
|
||||
|
||||
broadcom,width = <0>; /* Set by VideoCore */
|
||||
broadcom,height = <0>; /* Set by VideoCore */
|
||||
broadcom,depth = <0>; /* Set by VideoCore */
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
memory {
|
||||
device_type = "memory";
|
||||
reg = <0 0x08000000>; /* 128MB */
|
||||
};
|
||||
|
||||
leds {
|
||||
compatible = "gpio-leds";
|
||||
|
||||
ok {
|
||||
label = "ok";
|
||||
gpios = <&gpio 16 1>;
|
||||
|
||||
/* Don't change this - it configures
|
||||
* how the led driver determines if
|
||||
* the led is on or off when it loads.
|
||||
*/
|
||||
default-state = "keep";
|
||||
|
||||
/* This is the real default state. */
|
||||
linux,default-trigger = "default-on";
|
||||
};
|
||||
};
|
||||
|
||||
power: regulator {
|
||||
compatible = "broadcom,bcm2835-power-mgr", "broadcom,bcm2708-power-mgr", "simple-bus";
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
broadcom,vc-mailbox = <&vc_mbox>;
|
||||
broadcom,vc-channel = <0>;
|
||||
|
||||
regulator-name = "VideoCore";
|
||||
regulator-min-microvolt = <5000000>;
|
||||
regulator-max-microvolt = <5000000>;
|
||||
regulator-always-on = <1>;
|
||||
|
||||
sd_card_power: regulator@0 {
|
||||
compatible = "broadcom,bcm2835-power-dev", "broadcom,bcm2708-power-dev";
|
||||
reg = <0>;
|
||||
|
||||
vin-supply = <&power>;
|
||||
regulator-name = "SD Card";
|
||||
regulator-min-microvolt = <3300000>;
|
||||
regulator-max-microvolt = <3300000>;
|
||||
};
|
||||
|
||||
/* This is for the controller itself, not the root port */
|
||||
usb_hcd_power: regulator@3 {
|
||||
compatible = "broadcom,bcm2835-power-dev", "broadcom,bcm2708-power-dev";
|
||||
reg = <3>;
|
||||
|
||||
vin-supply = <&power>;
|
||||
regulator-name = "USB HCD";
|
||||
regulator-min-microvolt = <5000000>;
|
||||
regulator-max-microvolt = <5000000>;
|
||||
};
|
||||
};
|
||||
|
||||
aliases {
|
||||
uart0 = &uart0;
|
||||
};
|
||||
|
||||
chosen {
|
||||
bootargs = ""; /* Set by VideoCore */
|
||||
stdin = "uart0";
|
||||
stdout = "uart0";
|
||||
};
|
||||
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user