433 lines
12 KiB
C
433 lines
12 KiB
C
/*
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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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#include <stdint.h>
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/*
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* The code in this file applies to all coreboot architectures. Some coreboot
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* table tags are architecture specific, they are handled by their respective
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* cb_parse_arch_specific() functions.
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*/
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/* === Parsing code === */
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/* This is the generic parsing code. */
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uintptr_t get_cbmem_addr(const void *const cbmem_tab_entry)
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{
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const struct cb_cbmem_tab *const cbmem = cbmem_tab_entry;
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return cbmem->cbmem_tab;
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}
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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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#if CONFIG(LP_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->cb_serial = virt_to_phys(ptr);
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}
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static void cb_parse_vboot_workbuf(unsigned char *ptr, struct sysinfo_t *info)
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{
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info->vboot_workbuf = get_cbmem_addr(ptr);
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}
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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 lb_range *vbnv = (struct lb_range *)ptr;
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info->vbnv_start = vbnv->range_start;
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info->vbnv_size = vbnv->range_size;
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}
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static void cb_parse_mmc_info(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_mmc_info *mmc_info = (struct cb_mmc_info *)ptr;
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info->mmc_early_wake_status = mmc_info->early_cmd1_status;
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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_mac_addresses(unsigned char *ptr,
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struct sysinfo_t *info)
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{
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struct cb_macs *macs = (struct cb_macs *)ptr;
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int i;
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info->num_macs = (macs->count < ARRAY_SIZE(info->macs)) ?
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macs->count : ARRAY_SIZE(info->macs);
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for (i = 0; i < info->num_macs; i++)
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info->macs[i] = macs->mac_addrs[i];
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}
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static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info)
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{
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info->tstamp_table = get_cbmem_addr(ptr);
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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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info->cbmem_cons = get_cbmem_addr(ptr);
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}
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static void cb_parse_acpi_gnvs(unsigned char *ptr, struct sysinfo_t *info)
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{
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info->acpi_gnvs = get_cbmem_addr(ptr);
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}
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static void cb_parse_acpi_cnvs(unsigned char *ptr, struct sysinfo_t *info)
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{
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info->acpi_cnvs = get_cbmem_addr(ptr);
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}
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static void cb_parse_board_config(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_board_config *const config = (struct cb_board_config *)ptr;
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info->fw_config = cb_unpack64(config->fw_config);
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info->board_id = config->board_id;
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info->ram_code = config->ram_code;
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info->sku_id = config->sku_id;
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}
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#if CONFIG(LP_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 is already virtual, but we want to keep physical addresses */
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info->cmos_option_table = virt_to_phys(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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#if CONFIG(LP_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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info->framebuffer = *(struct cb_framebuffer *)ptr;
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}
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#endif
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static void cb_parse_string(const void *const ptr, uintptr_t *const info)
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{
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/* ptr is already virtual (str->string just an offset to that),
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but we want to keep physical addresses */
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const struct cb_string *const str = ptr;
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*info = virt_to_phys(str->string);
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}
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static void cb_parse_wifi_calibration(void *ptr, struct sysinfo_t *info)
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{
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info->wifi_calibration = get_cbmem_addr(ptr);
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}
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static void cb_parse_ramoops(void *ptr, struct sysinfo_t *info)
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{
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struct lb_range *ramoops = (struct lb_range *)ptr;
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info->ramoops_buffer = ramoops->range_start;
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info->ramoops_buffer_size = ramoops->range_size;
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}
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static void cb_parse_mtc(void *ptr, struct sysinfo_t *info)
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{
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struct lb_range *mtc = (struct lb_range *)ptr;
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info->mtc_start = mtc->range_start;
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info->mtc_size = mtc->range_size;
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}
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static void cb_parse_spi_flash(void *ptr, struct sysinfo_t *info)
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{
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struct cb_spi_flash *flash = (struct cb_spi_flash *)ptr;
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info->spi_flash.size = flash->flash_size;
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info->spi_flash.sector_size = flash->sector_size;
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info->spi_flash.erase_cmd = flash->erase_cmd;
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if (flash->mmap_count == 0)
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return;
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info->spi_flash.mmap_window_count = MIN(flash->mmap_count, SYSINFO_MAX_MMAP_WINDOWS);
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memcpy(info->spi_flash.mmap_table, flash->mmap_table,
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info->spi_flash.mmap_window_count * sizeof(struct flash_mmap_window));
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}
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static void cb_parse_boot_media_params(unsigned char *ptr,
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struct sysinfo_t *info)
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{
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struct cb_boot_media_params *const bmp =
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(struct cb_boot_media_params *)ptr;
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info->fmap_offset = bmp->fmap_offset;
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info->cbfs_offset = bmp->cbfs_offset;
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info->cbfs_size = bmp->cbfs_size;
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info->boot_media_size = bmp->boot_media_size;
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}
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static void cb_parse_vpd(void *ptr, struct sysinfo_t *info)
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{
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info->chromeos_vpd = get_cbmem_addr(ptr);
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}
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static void cb_parse_fmap_cache(void *ptr, struct sysinfo_t *info)
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{
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info->fmap_cache = get_cbmem_addr(ptr);
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}
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#if CONFIG(LP_TIMER_RDTSC)
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static void cb_parse_tsc_info(void *ptr, struct sysinfo_t *info)
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{
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const struct cb_tsc_info *tsc_info = ptr;
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if (tsc_info->freq_khz == 0)
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return;
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/* Honor the TSC frequency passed to the payload. */
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info->cpu_khz = tsc_info->freq_khz;
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}
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#endif
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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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/* 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 (!header->table_bytes)
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return 0;
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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->cb_header = virt_to_phys(header);
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/* Initialize IDs as undefined in case they don't show up in table. */
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info->board_id = UNDEFINED_STRAPPING_ID;
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info->ram_code = UNDEFINED_STRAPPING_ID;
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info->sku_id = UNDEFINED_STRAPPING_ID;
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info->fw_config = UNDEFINED_FW_CONFIG;
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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)
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((struct cb_forward *)rec)->forward);
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return cb_parse_header(forward, len, info);
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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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#if CONFIG(LP_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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#if CONFIG(LP_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->cb_mainboard = virt_to_phys(ptr);
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break;
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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_VBNV:
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cb_parse_vbnv(ptr, info);
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break;
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case CB_TAG_VBOOT_WORKBUF:
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cb_parse_vboot_workbuf(ptr, info);
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break;
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case CB_TAG_MAC_ADDRS:
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cb_parse_mac_addresses(ptr, info);
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break;
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case CB_TAG_SERIALNO:
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cb_parse_string(ptr, &info->serialno);
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break;
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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_ACPI_GNVS:
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cb_parse_acpi_gnvs(ptr, info);
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break;
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case CB_TAG_ACPI_CNVS:
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cb_parse_acpi_cnvs(ptr, info);
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break;
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case CB_TAG_BOARD_CONFIG:
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cb_parse_board_config(ptr, info);
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break;
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case CB_TAG_WIFI_CALIBRATION:
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cb_parse_wifi_calibration(ptr, info);
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break;
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case CB_TAG_RAM_OOPS:
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cb_parse_ramoops(ptr, info);
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break;
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case CB_TAG_SPI_FLASH:
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cb_parse_spi_flash(ptr, info);
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break;
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case CB_TAG_MMC_INFO:
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cb_parse_mmc_info(ptr, info);
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break;
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case CB_TAG_MTC:
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cb_parse_mtc(ptr, info);
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break;
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case CB_TAG_BOOT_MEDIA_PARAMS:
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cb_parse_boot_media_params(ptr, info);
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break;
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#if CONFIG(LP_TIMER_RDTSC)
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case CB_TAG_TSC_INFO:
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cb_parse_tsc_info(ptr, info);
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break;
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#endif
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case CB_TAG_VPD:
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cb_parse_vpd(ptr, info);
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break;
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case CB_TAG_FMAP:
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cb_parse_fmap_cache(ptr, info);
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break;
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default:
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cb_parse_arch_specific(rec, 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 0;
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}
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