cfe77beea4
The address range to scan for the coreboot tables varies from machine to machine based on the range memory occupies on the SOC being booted and on the amount of memory installed on the machine. To make libpayload work on different ARM systems with different needs, this change makes the region to scan configurable. In the future, we might want to come up with a more automatic mechanism like on x86, although there's less consistency on ARM as far as what ranges are even memory in the first place. Change-Id: Ib50efe25a6152171b0fbd0e324dbc5e89c527d6e Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://gerrit.chromium.org/gerrit/59242 Reviewed-by: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/4254 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
291 lines
8 KiB
C
291 lines
8 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2008 Advanced Micro Devices, Inc.
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* Copyright (C) 2009 coresystems GmbH
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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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#include <libpayload-config.h>
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#include <libpayload.h>
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#include <coreboot_tables.h>
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/*
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* Some of this is x86 specific, and the rest of it is generic. Right now,
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* since we only support x86, we'll avoid trying to make lots of infrastructure
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* we don't need. If in the future, we want to use coreboot on some other
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* architecture, then take out the generic parsing code and move it elsewhere.
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*/
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/* === Parsing code === */
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/* This is the generic parsing code. */
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static void cb_parse_memory(void *ptr, struct sysinfo_t *info)
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{
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struct cb_memory *mem = ptr;
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int count = MEM_RANGE_COUNT(mem);
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int i;
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if (count > SYSINFO_MAX_MEM_RANGES)
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count = SYSINFO_MAX_MEM_RANGES;
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info->n_memranges = 0;
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for (i = 0; i < count; i++) {
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struct cb_memory_range *range = MEM_RANGE_PTR(mem, i);
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#ifdef CONFIG_MEMMAP_RAM_ONLY
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if (range->type != CB_MEM_RAM)
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continue;
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#endif
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info->memrange[info->n_memranges].base =
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cb_unpack64(range->start);
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info->memrange[info->n_memranges].size =
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cb_unpack64(range->size);
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info->memrange[info->n_memranges].type = range->type;
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info->n_memranges++;
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}
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}
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static void cb_parse_serial(void *ptr, struct sysinfo_t *info)
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{
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info->serial = ((struct cb_serial *)ptr);
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}
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#ifdef CONFIG_CHROMEOS
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static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_vbnv *vbnv = (struct cb_vbnv *)ptr;
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info->vbnv_start = vbnv->vbnv_start;
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info->vbnv_size = vbnv->vbnv_size;
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}
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static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info)
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{
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int i;
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struct cb_gpios *gpios = (struct cb_gpios *)ptr;
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info->num_gpios = (gpios->count < SYSINFO_MAX_GPIOS) ?
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(gpios->count) : SYSINFO_MAX_GPIOS;
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for (i = 0; i < info->num_gpios; i++)
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info->gpios[i] = gpios->gpios[i];
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}
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static void cb_parse_vdat(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_vdat *vdat = (struct cb_vdat *) ptr;
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info->vdat_addr = phys_to_virt(vdat->vdat_addr);
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info->vdat_size = vdat->vdat_size;
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}
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#endif
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static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
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info->tstamp_table = phys_to_virt(cbmem->cbmem_tab);
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}
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static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
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info->cbmem_cons = phys_to_virt(cbmem->cbmem_tab);
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}
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static void cb_parse_mrc_cache(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
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info->mrc_cache = phys_to_virt(cbmem->cbmem_tab);
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}
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#ifdef CONFIG_NVRAM
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static void cb_parse_optiontable(void *ptr, struct sysinfo_t *info)
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{
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/* ptr points to a coreboot table entry and is already virtual */
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info->option_table = ptr;
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}
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static void cb_parse_checksum(void *ptr, struct sysinfo_t *info)
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{
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struct cb_cmos_checksum *cmos_cksum = ptr;
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info->cmos_range_start = cmos_cksum->range_start;
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info->cmos_range_end = cmos_cksum->range_end;
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info->cmos_checksum_location = cmos_cksum->location;
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}
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#endif
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#ifdef CONFIG_COREBOOT_VIDEO_CONSOLE
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static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info)
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{
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/* ptr points to a coreboot table entry and is already virtual */
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info->framebuffer = ptr;
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}
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#endif
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static void cb_parse_string(unsigned char *ptr, char **info)
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{
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*info = (char *)((struct cb_string *)ptr)->string;
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}
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static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
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{
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struct cb_header *header;
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unsigned char *ptr = addr;
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void *forward;
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int i;
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for (i = 0; i < len; i += 16, ptr += 16) {
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header = (struct cb_header *)ptr;
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if (!strncmp((const char *)header->signature, "LBIO", 4))
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break;
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}
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/* We walked the entire space and didn't find anything. */
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if (i >= len)
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return -1;
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if (!header->table_bytes)
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return 0;
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/* Make sure the checksums match. */
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if (ipchksum((u16 *) header, sizeof(*header)) != 0)
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return -1;
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if (ipchksum((u16 *) (ptr + sizeof(*header)),
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header->table_bytes) != header->table_checksum)
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return -1;
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info->header = header;
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/* Now, walk the tables. */
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ptr += header->header_bytes;
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for (i = 0; i < header->table_entries; i++) {
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struct cb_record *rec = (struct cb_record *)ptr;
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/* We only care about a few tags here (maybe more later). */
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switch (rec->tag) {
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case CB_TAG_FORWARD:
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forward = phys_to_virt((void *)(unsigned long)((struct cb_forward *)rec)->forward);
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return cb_parse_header(forward, len, info);
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continue;
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case CB_TAG_MEMORY:
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cb_parse_memory(ptr, info);
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break;
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case CB_TAG_SERIAL:
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cb_parse_serial(ptr, info);
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break;
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case CB_TAG_VERSION:
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cb_parse_string(ptr, &info->cb_version);
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break;
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case CB_TAG_EXTRA_VERSION:
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cb_parse_string(ptr, &info->extra_version);
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break;
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case CB_TAG_BUILD:
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cb_parse_string(ptr, &info->build);
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break;
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case CB_TAG_COMPILE_TIME:
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cb_parse_string(ptr, &info->compile_time);
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break;
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case CB_TAG_COMPILE_BY:
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cb_parse_string(ptr, &info->compile_by);
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break;
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case CB_TAG_COMPILE_HOST:
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cb_parse_string(ptr, &info->compile_host);
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break;
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case CB_TAG_COMPILE_DOMAIN:
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cb_parse_string(ptr, &info->compile_domain);
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break;
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case CB_TAG_COMPILER:
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cb_parse_string(ptr, &info->compiler);
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break;
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case CB_TAG_LINKER:
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cb_parse_string(ptr, &info->linker);
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break;
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case CB_TAG_ASSEMBLER:
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cb_parse_string(ptr, &info->assembler);
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break;
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#ifdef CONFIG_NVRAM
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case CB_TAG_CMOS_OPTION_TABLE:
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cb_parse_optiontable(ptr, info);
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break;
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case CB_TAG_OPTION_CHECKSUM:
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cb_parse_checksum(ptr, info);
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break;
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#endif
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#ifdef CONFIG_COREBOOT_VIDEO_CONSOLE
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// FIXME we should warn on serial if coreboot set up a
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// framebuffer buf the payload does not know about it.
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case CB_TAG_FRAMEBUFFER:
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cb_parse_framebuffer(ptr, info);
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break;
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#endif
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case CB_TAG_MAINBOARD:
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info->mainboard = (struct cb_mainboard *)ptr;
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break;
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#ifdef CONFIG_CHROMEOS
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case CB_TAG_GPIO:
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cb_parse_gpios(ptr, info);
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break;
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case CB_TAG_VDAT:
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cb_parse_vdat(ptr, info);
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break;
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case CB_TAG_VBNV:
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cb_parse_vbnv(ptr, info);
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break;
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#endif
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case CB_TAG_TIMESTAMPS:
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cb_parse_tstamp(ptr, info);
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break;
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case CB_TAG_CBMEM_CONSOLE:
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cb_parse_cbmem_cons(ptr, info);
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break;
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case CB_TAG_MRC_CACHE:
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cb_parse_mrc_cache(ptr, info);
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break;
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}
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ptr += rec->size;
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}
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return 1;
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}
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/* == Architecture specific == */
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/* FIXME put in actual address range */
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int get_coreboot_info(struct sysinfo_t *info)
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{
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int ret = cb_parse_header(phys_to_virt(CONFIG_COREBOOT_INFO_RANGE_BASE),
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CONFIG_COREBOOT_INFO_RANGE_SIZE, info);
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return (ret == 1) ? 0 : -1;
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}
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