b41cdbed24
static device mappings, rather than as the first of the initializations that a platform can hook into. This allows a platform to allocate KVA from the top of the address space downwards for things like static device mapping, and return the final "last usable address" result after that and other early init work is done. Because some platforms were doing work in initarm_lastaddr() that needs to be done early, add a new initarm_early_init() routine and move the early init code to that routine on those platforms. Rename platform_devmap_init() to initarm_devmap_init() to match all the other init routines called from initarm() that are designed to be implemented by platform code. Add a comment block that explains when these routines are called and the type of work expected to be done in each of them.
168 lines
3.6 KiB
C
168 lines
3.6 KiB
C
/*-
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* Copyright (c) 2013 Thomas Skibo
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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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* $FreeBSD$
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*/
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/*
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* Machine dependent code for Xilinx Zynq-7000 Soc.
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*
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* Reference: Zynq-7000 All Programmable SoC Technical Reference Manual.
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* (v1.4) November 16, 2012. Xilinx doc UG585.
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*/
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#include "opt_global.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define _ARM32_BUS_DMA_PRIVATE
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <dev/fdt/fdt_common.h>
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#include <machine/bus.h>
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#include <machine/devmap.h>
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#include <machine/machdep.h>
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#include <arm/xilinx/zy7_reg.h>
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void (*zynq7_cpu_reset)(void);
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vm_offset_t
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initarm_lastaddr(void)
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{
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return (ZYNQ7_PSIO_VBASE);
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}
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void
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initarm_early_init(void)
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{
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}
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void
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initarm_gpio_init(void)
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{
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}
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void
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initarm_late_init(void)
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{
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}
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#define FDT_DEVMAP_SIZE 3
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static struct arm_devmap_entry fdt_devmap[FDT_DEVMAP_SIZE];
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/*
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* Construct pmap_devmap[] with DT-derived config data.
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*/
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int
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initarm_devmap_init(void)
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{
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int i = 0;
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fdt_devmap[i].pd_va = ZYNQ7_PSIO_VBASE;
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fdt_devmap[i].pd_pa = ZYNQ7_PSIO_HWBASE;
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fdt_devmap[i].pd_size = ZYNQ7_PSIO_SIZE;
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fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
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fdt_devmap[i].pd_cache = PTE_DEVICE;
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i++;
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fdt_devmap[i].pd_va = ZYNQ7_PSCTL_VBASE;
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fdt_devmap[i].pd_pa = ZYNQ7_PSCTL_HWBASE;
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fdt_devmap[i].pd_size = ZYNQ7_PSCTL_SIZE;
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fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
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fdt_devmap[i].pd_cache = PTE_DEVICE;
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i++;
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/* end of table */
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fdt_devmap[i].pd_va = 0;
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fdt_devmap[i].pd_pa = 0;
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fdt_devmap[i].pd_size = 0;
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fdt_devmap[i].pd_prot = 0;
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fdt_devmap[i].pd_cache = 0;
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arm_devmap_register_table(&fdt_devmap[0]);
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return (0);
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}
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struct fdt_fixup_entry fdt_fixup_table[] = {
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{ NULL, NULL }
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};
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static int
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fdt_gic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
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int *pol)
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{
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if (!fdt_is_compatible(node, "arm,gic"))
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return (ENXIO);
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*interrupt = fdt32_to_cpu(intr[0]);
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*trig = INTR_TRIGGER_CONFORM;
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*pol = INTR_POLARITY_CONFORM;
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return (0);
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}
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fdt_pic_decode_t fdt_pic_table[] = {
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&fdt_gic_decode_ic,
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NULL
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};
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struct arm32_dma_range *
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bus_dma_get_range(void)
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{
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return (NULL);
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}
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int
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bus_dma_get_range_nb(void)
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{
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return (0);
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}
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void
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cpu_reset()
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{
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if (zynq7_cpu_reset != NULL)
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(*zynq7_cpu_reset)();
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printf("cpu_reset: no platform cpu_reset. hanging.\n");
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for (;;)
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;
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}
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