Add the Raspberry PI firmware VC mailbox channel numbers.
Add some VC property tag definitions and use them to get ARM/VC memory split. Grab a few others things in the process, but don't do anything other than display them when VERBOSE_INIT_ARM is defined.
This commit is contained in:
skrll
parent
a2b8c7fb07
commit
697a2ce91b
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@ -1,4 +1,4 @@
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/* $NetBSD: rpi_machdep.c,v 1.12 2012/10/13 14:22:12 skrll Exp $ */
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/* $NetBSD: rpi_machdep.c,v 1.13 2012/10/14 16:16:52 skrll Exp $ */
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/*-
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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@ -30,7 +30,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: rpi_machdep.c,v 1.12 2012/10/13 14:22:12 skrll Exp $");
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__KERNEL_RCSID(0, "$NetBSD: rpi_machdep.c,v 1.13 2012/10/14 16:16:52 skrll Exp $");
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#include "opt_evbarm_boardtype.h"
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@ -49,8 +49,13 @@ __KERNEL_RCSID(0, "$NetBSD: rpi_machdep.c,v 1.12 2012/10/13 14:22:12 skrll Exp $
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#include <machine/bootconfig.h>
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#include <machine/pmap.h>
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#include <arm/broadcom/bcm2835reg.h>
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#include <arm/broadcom/bcm2835var.h>
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#include <arm/broadcom/bcm2835_pmvar.h>
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#include <arm/broadcom/bcm2835_mbox.h>
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#include <evbarm/rpi/vcio.h>
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#include <evbarm/rpi/vcprop.h>
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#include <evbarm/rpi/rpi.h>
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@ -66,11 +71,16 @@ BootConfig bootconfig; /* Boot config storage */
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static char bootargs[MAX_BOOT_STRING];
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char *boot_args = NULL;
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void rpi_bootparams(void);
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/*
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* Macros to translate between physical and virtual for a subset of the
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* kernel address space. *Not* for general use.
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*/
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#define KERNEL_BASE_PHYS (paddr_t)0
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#define KERNEL_BASE_PHYS (paddr_t)0
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#define KERN_VTOPHYS(va) \
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((paddr_t)((vaddr_t)va - KERNEL_BASE + KERNEL_BASE_PHYS))
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#define KERN_PHYSTOV(pa) \
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((vaddr_t)((paddr_t)pa - KERNEL_BASE_PHYS + KERNEL_BASE))
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@ -103,7 +113,137 @@ int plcomcnmode = PLCONMODE;
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#endif
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/* Smallest amount of RAM start.elf could give us. */
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#define RPI_MINIMUM_ARM_RAM_SPLIT (128U * 1024 * 1024)
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#define RPI_MINIMUM_SPLIT (128U * 1024 * 1024)
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static struct {
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struct vcprop_buffer_hdr vb_hdr;
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struct vcprop_tag_fwrev vbt_fwrev;
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struct vcprop_tag_boardmodel vbt_boardmodel;
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struct vcprop_tag_boardrev vbt_boardrev;
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struct vcprop_tag_macaddr vbt_macaddr;
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struct vcprop_tag_memory vbt_memory;
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struct vcprop_tag_boardserial vbt_serial;
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struct vcprop_tag_cmdline vbt_cmdline;
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struct vcprop_tag end;
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} vb __packed __aligned(16) =
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{
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.vb_hdr = {
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.vpb_len = sizeof(vb),
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.vpb_rcode = VCPROP_PROCESS_REQUEST,
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},
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.vbt_fwrev = {
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.tag = {
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.vpt_tag = VCPROPTAG_GET_FIRMWAREREV,
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.vpt_len = VCPROPTAG_LEN(vb.vbt_fwrev),
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.vpt_rcode = VCPROPTAG_REQUEST
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},
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},
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.vbt_boardmodel = {
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.tag = {
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.vpt_tag = VCPROPTAG_GET_BOARDMODEL,
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.vpt_len = VCPROPTAG_LEN(vb.vbt_boardmodel),
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.vpt_rcode = VCPROPTAG_REQUEST
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},
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},
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.vbt_boardrev = {
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.tag = {
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.vpt_tag = VCPROPTAG_GET_BOARDREVISION,
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.vpt_len = VCPROPTAG_LEN(vb.vbt_boardrev),
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.vpt_rcode = VCPROPTAG_REQUEST
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},
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},
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.vbt_macaddr = {
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.tag = {
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.vpt_tag = VCPROPTAG_GET_MACADDRESS,
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.vpt_len = VCPROPTAG_LEN(vb.vbt_macaddr),
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.vpt_rcode = VCPROPTAG_REQUEST
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},
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},
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.vbt_memory = {
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.tag = {
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.vpt_tag = VCPROPTAG_GET_ARMMEMORY,
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.vpt_len = VCPROPTAG_LEN(vb.vbt_memory),
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.vpt_rcode = VCPROPTAG_REQUEST
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},
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},
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.vbt_serial = {
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.tag = {
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.vpt_tag = VCPROPTAG_GET_BOARDSERIAL,
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.vpt_len = VCPROPTAG_LEN(vb.vbt_serial),
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.vpt_rcode = VCPROPTAG_REQUEST
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},
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},
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.vbt_cmdline = {
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.tag = {
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.vpt_tag = VCPROPTAG_GET_CMDLINE,
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.vpt_len = VCPROPTAG_LEN(vb.vbt_cmdline),
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.vpt_rcode = VCPROPTAG_REQUEST
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},
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},
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.end = {
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.vpt_tag = VCPROPTAG_NULL
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}
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};
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void
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rpi_bootparams(void)
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{
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bus_space_tag_t iot = &bcm2835_bs_tag;
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bus_space_handle_t ioh = BCM2835_IOPHYSTOVIRT(BCM2835_ARMMBOX_BASE);
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uint32_t res;
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bcm2835_mbox_write(iot, ioh, BCMMBOX_CHANARM2VC, KERN_VTOPHYS(&vb));
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bcm2835_mbox_read(iot, ioh, BCMMBOX_CHANARM2VC, &res);
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/*
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* No need to invalid the cache as the memory has never been referenced
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* by the ARM.
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*
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* cpu_dcache_inv_range((vaddr_t)&vb, sizeof(vb));
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*
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*/
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if (!vcprop_buffer_success_p(&vb.vb_hdr)) {
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bootconfig.dramblocks = 1;
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bootconfig.dram[0].address = 0x0;
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bootconfig.dram[0].pages = atop(RPI_MINIMUM_SPLIT);
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return;
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}
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struct vcprop_tag_memory *vptp_mem = &vb.vbt_memory;
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if (vcprop_tag_success_p(&vptp_mem->tag)) {
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size_t n = vcprop_tag_resplen(&vptp_mem->tag) /
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sizeof(struct vcprop_memory);
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for (int i = 0; i < n && i < DRAM_BLOCKS; i++) {
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bootconfig.dram[i].address = vptp_mem->mem[i].base;
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bootconfig.dram[i].pages = atop(vptp_mem->mem[i].size);
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}
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}
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#ifdef VERBOSE_INIT_ARM
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if (vcprop_tag_success_p(&vb.vbt_fwrev.tag))
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printf("%s: firmware rev %x\n", __func__,
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vb.vbt_fwrev.rev);
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if (vcprop_tag_success_p(&vb.vbt_macaddr.tag))
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printf("%s: mac-address %llx\n", __func__,
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vb.vbt_macaddr.addr);
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if (vcprop_tag_success_p(&vb.vbt_boardmodel.tag))
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printf("%s: board model %x\n", __func__,
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vb.vbt_boardmodel.model);
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if (vcprop_tag_success_p(&vb.vbt_boardrev.tag))
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printf("%s: board rev %x\n", __func__,
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vb.vbt_boardrev.rev);
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if (vcprop_tag_success_p(&vb.vbt_serial.tag))
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printf("%s: board serial %llx\n", __func__,
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vb.vbt_serial.sn);
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if (vcprop_tag_success_p(&vb.vbt_cmdline.tag))
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printf("%s: cmdline %s\n", __func__,
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vb.vbt_cmdline.cmdline);
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#endif
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}
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/*
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* Static device mappings. These peripheral registers are mapped at
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@ -137,63 +277,6 @@ static const struct pmap_devmap rpi_devmap[] = {
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#undef _A
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#undef _S
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#define LINUX_ARM_MACHTYPE_BCM2708 3138
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#define LINUX_ATAG_NONE 0x00000000
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struct linux_atag_header {
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uint32_t size;
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uint32_t tag;
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} __packed __aligned(4);
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#define LINUX_ATAG_MEM 0x54410002
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struct linux_atag_mem {
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uint32_t size;
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uint32_t start;
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} __packed __aligned(4);
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#define LINUX_ATAG_CMDLINE 0x54410009
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struct linux_atag_cmdline {
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char cmdline[1];
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} __packed __aligned(4);
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struct linux_atag {
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struct linux_atag_header hdr;
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union {
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struct linux_atag_mem mem;
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struct linux_atag_cmdline cmdline;
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} u;
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} __packed __aligned(4);
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static void
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parse_linux_atags(void *atag_base)
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{
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struct linux_atag *atp;
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for (atp = atag_base;
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atp->hdr.size >= sizeof(struct linux_atag_header)/sizeof(uint32_t);
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atp = (void *)((uintptr_t)atp + sizeof(uint32_t) * atp->hdr.size)) {
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printf("atag: size %08x tag %08x\n", atp->hdr.size, atp->hdr.tag);
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if (atp->hdr.tag == LINUX_ATAG_MEM) {
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if (bootconfig.dramblocks > 1) {
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printf("Ignoring RAM block 0x%08x-0x%08x\n",
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atp->u.mem.start, atp->u.mem.start +
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atp->u.mem.size - 1);
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continue;
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}
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KASSERT(atp->u.mem.start == 0);
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bootconfig.dram[bootconfig.dramblocks].address = 0x0;
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bootconfig.dram[bootconfig.dramblocks].pages =
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atp->u.mem.size / PAGE_SIZE;
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++bootconfig.dramblocks;
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}
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if (atp->hdr.tag == LINUX_ATAG_CMDLINE) {
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strncpy(bootargs, atp->u.cmdline.cmdline,
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sizeof(bootargs));
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}
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}
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}
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/*
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* u_int initarm(...)
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*
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@ -229,25 +312,14 @@ initarm(void *arg)
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#define _BDSTR(s) #s
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printf("\nNetBSD/evbarm (" BDSTR(EVBARM_BOARDTYPE) ") booting ...\n");
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bootargs[0] = '\0';
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rpi_bootparams();
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#ifdef VERBOSE_INIT_ARM
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printf("initarm: Configuring system ...\n");
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#endif
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extern const uint32_t rpi_boot_regs[4];
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if (rpi_boot_regs[0] == 0 &&
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rpi_boot_regs[1] == LINUX_ARM_MACHTYPE_BCM2708) {
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parse_linux_atags((void *)KERN_PHYSTOV(rpi_boot_regs[2]));
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} else {
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bootconfig.dramblocks = 1;
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bootconfig.dram[0].address = 0x0;
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bootconfig.dram[0].pages =
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RPI_MINIMUM_ARM_RAM_SPLIT / PAGE_SIZE;
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}
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arm32_bootmem_init(bootconfig.dram[0].address,
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bootconfig.dram[0].pages * PAGE_SIZE, bootconfig.dram[0].address);
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arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_HIGH, 0, rpi_devmap,
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false);
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@ -0,0 +1,45 @@
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/* $NetBSD: vcio.h,v 1.1 2012/10/14 16:16:52 skrll Exp $ */
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/*-
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Nick Hudson
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _EVBARM_RPI_VCIO_H_
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#define _EVBARM_RPI_VCIO_H_
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#define BCMMBOX_CHANPM 0
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#define BCMMBOX_CHANFB 1 /* will be depreciated */
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#define BCMMBOX_CHANVUART 2
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#define BCMMBOX_CHANVCHIQ 3
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#define BCMMBOX_CHANLEDS 4
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#define BCMMBOX_CHANBUTTONS 5
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#define BCMMBOX_CHANTOUCHSCR 6
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#define BCMMBOX_CHANARM2VC 8
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#define BCMMBOX_CHANVC2ARM 9
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#endif /* _EVBARM_RPI_VCIO_H_ */
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@ -0,0 +1,149 @@
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/* $NetBSD: vcprop.h,v 1.1 2012/10/14 16:16:52 skrll Exp $ */
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/*-
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Nick Hudson
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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.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
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* 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
|
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Mailbox property interface
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*/
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#ifndef _EVBARM_RPI_VCPROP_H_
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#define _EVBARM_RPI_VCPROP_H_
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struct vcprop_tag {
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uint32_t vpt_tag;
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#define VCPROPTAG_NULL 0x00000000
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#define VCPROPTAG_GET_FIRMWAREREV 0x00000001
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#define VCPROPTAG_GET_BOARDMODEL 0x00010001
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#define VCPROPTAG_GET_BOARDREVISION 0x00010002
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#define VCPROPTAG_GET_MACADDRESS 0x00010003
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#define VCPROPTAG_GET_BOARDSERIAL 0x00010004
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#define VCPROPTAG_GET_ARMMEMORY 0x00010005
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#define VCPROPTAG_GET_VCMEMORY 0x00010006
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#define VCPROPTAG_GET_CLOCKS 0x00010007
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#define VCPROPTAG_GET_CMDLINE 0x00050001
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#define VCPROPTAG_GET_DMACHAN 0x00060001
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uint32_t vpt_len;
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uint32_t vpt_rcode;
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#define VCPROPTAG_REQUEST (0U << 31)
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#define VCPROPTAG_RESPONSE (1U << 31)
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};
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#define VCPROPTAG_LEN(x) (sizeof((x)) - sizeof(struct vcprop_tag))
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struct vcprop_memory {
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uint32_t base;
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uint32_t size;
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};
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#define VCPROP_MAXMEMBLOCKS 4
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struct vcprop_tag_memory {
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struct vcprop_tag tag;
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struct vcprop_memory mem[VCPROP_MAXMEMBLOCKS];
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};
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struct vcprop_tag_fwrev {
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struct vcprop_tag tag;
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uint32_t rev;
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};
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struct vcprop_tag_boardmodel {
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struct vcprop_tag tag;
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uint32_t model;
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} ;
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struct vcprop_tag_boardrev {
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struct vcprop_tag tag;
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uint32_t rev;
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} ;
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struct vcprop_tag_macaddr {
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struct vcprop_tag tag;
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uint64_t addr;
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};
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struct vcprop_tag_boardserial {
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struct vcprop_tag tag;
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uint64_t sn;
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};
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struct vcprop_clock {
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uint32_t pclk;
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uint32_t cclk;
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};
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#define VCPROP_MAXCLOCKS 16
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struct vcprop_tag_clock {
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struct vcprop_tag tag;
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struct vcprop_clock clk[VCPROP_MAXCLOCKS];
|
||||
};
|
||||
|
||||
#define VCPROP_MAXCMDLINE 256
|
||||
struct vcprop_tag_cmdline {
|
||||
struct vcprop_tag tag;
|
||||
uint8_t cmdline[VCPROP_MAXCMDLINE];
|
||||
};
|
||||
|
||||
struct vcprop_tag_dmachan {
|
||||
struct vcprop_tag tag;
|
||||
uint32_t mask;
|
||||
};
|
||||
|
||||
struct vcprop_buffer_hdr {
|
||||
uint32_t vpb_len;
|
||||
uint32_t vpb_rcode;
|
||||
#define VCPROP_PROCESS_REQUEST 0
|
||||
#define VCPROP_REQ_SUCCESS (1U << 31)
|
||||
#define VCPROP_REQ_EPARSE (1U << 0)
|
||||
};
|
||||
|
||||
static inline bool
|
||||
vcprop_buffer_success_p(struct vcprop_buffer_hdr *vpbh)
|
||||
{
|
||||
|
||||
return (vpbh->vpb_rcode & VCPROP_REQ_SUCCESS);
|
||||
}
|
||||
|
||||
static inline bool
|
||||
vcprop_tag_success_p(struct vcprop_tag *vpbt)
|
||||
{
|
||||
|
||||
return (vpbt->vpt_rcode & VCPROPTAG_RESPONSE);
|
||||
}
|
||||
|
||||
static inline size_t
|
||||
vcprop_tag_resplen(struct vcprop_tag *vpbt)
|
||||
{
|
||||
|
||||
return (vpbt->vpt_rcode & ~VCPROPTAG_RESPONSE);
|
||||
}
|
||||
|
||||
#endif /* _EVBARM_RPI_VCPROP_H_ */
|
||||
Loading…
Reference in New Issue