850dd7e9cd
We use armv7/GENERIC for the RPI2 images. The original RPI2 is actually a 32-bit BCM2836, but v1.2 was upgraded to the 64-bit BCM2837. The project continues to provide the RPI2 image as armv7, as it's the lowest common denominator of the two. Historically, we've just kind of implicitly acknowledged this by including some bcm2837 bits on a SOC_BCM2836 kernel config -- this worked until r354875 added code that actually cared. Acknowledge formally that BCM2837 is valid in arm32. This name is inconsistent with the other BCM* SOC on !arm64 for two reasons: 1. It's a pre-existing option on arm64, and 2. the naming convention on arm/ should've arguably changed to include BRCM #1 seems to be a convincing enough argument to maintain the existing name for it.
159 lines
4.7 KiB
C
159 lines
4.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 2012 Oleksandr Tymoshenko.
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* Copyright (c) 1994-1998 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Brini.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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* from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
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*/
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#include "opt_ddb.h"
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#include "opt_platform.h"
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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/bus.h>
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#include <sys/devmap.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <machine/machdep.h>
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#include <machine/platform.h>
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#include <machine/platformvar.h>
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#include <dev/ofw/openfirm.h>
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#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
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#include <arm/broadcom/bcm2835/bcm2836_mp.h>
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#include "platform_if.h"
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#ifdef SOC_BCM2835
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static platform_devmap_init_t bcm2835_devmap_init;
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#endif
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#ifdef SOC_BCM2836
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static platform_devmap_init_t bcm2836_devmap_init;
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#endif
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static platform_late_init_t bcm2835_late_init;
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static platform_cpu_reset_t bcm2835_cpu_reset;
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static void
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bcm2835_late_init(platform_t plat)
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{
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phandle_t system;
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pcell_t cells[2];
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int len;
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system = OF_finddevice("/system");
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if (system != -1) {
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len = OF_getencprop(system, "linux,serial", cells,
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sizeof(cells));
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if (len > 0)
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board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]);
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len = OF_getencprop(system, "linux,revision", cells,
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sizeof(cells));
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if (len > 0)
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board_set_revision(cells[0]);
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}
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}
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#ifdef SOC_BCM2835
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/*
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* Set up static device mappings.
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* All on-chip peripherals exist in a 16MB range starting at 0x20000000.
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* Map the entire range using 1MB section mappings.
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*/
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static int
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bcm2835_devmap_init(platform_t plat)
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{
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devmap_add_entry(0x20000000, 0x01000000);
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return (0);
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}
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#endif
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#ifdef SOC_BCM2836
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static int
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bcm2836_devmap_init(platform_t plat)
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{
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devmap_add_entry(0x3f000000, 0x01000000);
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return (0);
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}
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#endif
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static void
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bcm2835_cpu_reset(platform_t plat)
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{
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bcmwd_watchdog_reset();
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}
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#ifdef SOC_BCM2835
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static platform_method_t bcm2835_methods[] = {
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PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init),
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PLATFORMMETHOD(platform_late_init, bcm2835_late_init),
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PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset),
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PLATFORMMETHOD_END,
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};
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FDT_PLATFORM_DEF2(bcm2835, bcm2835_legacy, "bcm2835 (legacy)", 0, "raspberrypi,model-b", 100);
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FDT_PLATFORM_DEF2(bcm2835, bcm2835, "bcm2835", 0, "brcm,bcm2835", 100);
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#endif
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#if defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837)
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static platform_method_t bcm2836_methods[] = {
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PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init),
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PLATFORMMETHOD(platform_late_init, bcm2835_late_init),
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PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset),
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#ifdef SMP
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PLATFORMMETHOD(platform_mp_start_ap, bcm2836_mp_start_ap),
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PLATFORMMETHOD(platform_mp_setmaxid, bcm2836_mp_setmaxid),
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#endif
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PLATFORMMETHOD_END,
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};
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FDT_PLATFORM_DEF2(bcm2836, bcm2836_legacy, "bcm2836 (legacy)", 0, "brcm,bcm2709", 100);
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FDT_PLATFORM_DEF2(bcm2836, bcm2836, "bcm2836", 0, "brcm,bcm2836", 100);
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FDT_PLATFORM_DEF2(bcm2836, bcm2837, "bcm2837", 0, "brcm,bcm2837", 100);
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#endif /* defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) */
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