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- // SPDX-License-Identifier: BSD-3-Clause
- /*
- * This file is part of the libpayload project.
- *
- * Copyright (C) 2008 Advanced Micro Devices, Inc.
- * Copyright (C) 2009 coresystems GmbH
- */
- #include <common.h>
- #include <asm/cb_sysinfo.h>
- #include <init.h>
- #include <mapmem.h>
- #include <net.h>
- #include <asm/global_data.h>
- DECLARE_GLOBAL_DATA_PTR;
- /*
- * This needs to be in the .data section so that it's copied over during
- * relocation. By default it's put in the .bss section which is simply filled
- * with zeroes when transitioning from "ROM", which is really RAM, to other
- * RAM.
- */
- struct sysinfo_t lib_sysinfo __section(".data");
- /*
- * Some of this is x86 specific, and the rest of it is generic. Right now,
- * since we only support x86, we'll avoid trying to make lots of infrastructure
- * we don't need. If in the future, we want to use coreboot on some other
- * architecture, then take out the generic parsing code and move it elsewhere.
- */
- /* === Parsing code === */
- /* This is the generic parsing code */
- static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct cb_memory *mem = (struct cb_memory *)ptr;
- int count = MEM_RANGE_COUNT(mem);
- int i;
- if (count > SYSINFO_MAX_MEM_RANGES)
- count = SYSINFO_MAX_MEM_RANGES;
- info->n_memranges = 0;
- for (i = 0; i < count; i++) {
- struct cb_memory_range *range =
- (struct cb_memory_range *)MEM_RANGE_PTR(mem, i);
- info->memrange[info->n_memranges].base =
- UNPACK_CB64(range->start);
- info->memrange[info->n_memranges].size =
- UNPACK_CB64(range->size);
- info->memrange[info->n_memranges].type = range->type;
- info->n_memranges++;
- }
- }
- static void cb_parse_serial(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct cb_serial *ser = (struct cb_serial *)ptr;
- info->serial = ser;
- }
- static void cb_parse_vboot_handoff(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct lb_range *vbho = (struct lb_range *)ptr;
- info->vboot_handoff = (void *)(uintptr_t)vbho->range_start;
- info->vboot_handoff_size = vbho->range_size;
- }
- static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct lb_range *vbnv = (struct lb_range *)ptr;
- info->vbnv_start = vbnv->range_start;
- info->vbnv_size = vbnv->range_size;
- }
- static void cb_parse_cbmem_entry(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct cb_cbmem_entry *entry = (struct cb_cbmem_entry *)ptr;
- if (entry->id != CBMEM_ID_SMBIOS)
- return;
- info->smbios_start = entry->address;
- info->smbios_size = entry->entry_size;
- }
- static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info)
- {
- int i;
- struct cb_gpios *gpios = (struct cb_gpios *)ptr;
- info->num_gpios = (gpios->count < SYSINFO_MAX_GPIOS) ?
- (gpios->count) : SYSINFO_MAX_GPIOS;
- for (i = 0; i < info->num_gpios; i++)
- info->gpios[i] = gpios->gpios[i];
- }
- static void cb_parse_vdat(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct lb_range *vdat = (struct lb_range *)ptr;
- info->vdat_addr = map_sysmem(vdat->range_start, vdat->range_size);
- info->vdat_size = vdat->range_size;
- }
- static void cb_parse_mac_addresses(unsigned char *ptr,
- struct sysinfo_t *info)
- {
- struct cb_macs *macs = (struct cb_macs *)ptr;
- int i;
- info->num_macs = (macs->count < ARRAY_SIZE(info->macs)) ?
- macs->count : ARRAY_SIZE(info->macs);
- for (i = 0; i < info->num_macs; i++)
- info->macs[i] = macs->mac_addrs[i];
- }
- static void cb_parse_tstamp(void *ptr, struct sysinfo_t *info)
- {
- struct cb_cbmem_tab *const cbmem = ptr;
- info->tstamp_table = map_sysmem(cbmem->cbmem_tab, 0);
- }
- static void cb_parse_cbmem_cons(void *ptr, struct sysinfo_t *info)
- {
- struct cb_cbmem_tab *const cbmem = ptr;
- info->cbmem_cons = map_sysmem(cbmem->cbmem_tab, 0);
- }
- static void cb_parse_acpi_gnvs(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
- info->acpi_gnvs = map_sysmem(cbmem->cbmem_tab, 0);
- }
- static void cb_parse_board_id(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct cb_board_id *const cbbid = (struct cb_board_id *)ptr;
- info->board_id = cbbid->board_id;
- }
- static void cb_parse_ram_code(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct cb_ram_code *const ram_code = (struct cb_ram_code *)ptr;
- info->ram_code = ram_code->ram_code;
- }
- static void cb_parse_optiontable(void *ptr, struct sysinfo_t *info)
- {
- /* ptr points to a coreboot table entry and is already virtual */
- info->option_table = ptr;
- }
- static void cb_parse_checksum(void *ptr, struct sysinfo_t *info)
- {
- struct cb_cmos_checksum *cmos_cksum = ptr;
- info->cmos_range_start = cmos_cksum->range_start;
- info->cmos_range_end = cmos_cksum->range_end;
- info->cmos_checksum_location = cmos_cksum->location;
- }
- static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info)
- {
- /* ptr points to a coreboot table entry and is already virtual */
- info->framebuffer = ptr;
- }
- static void cb_parse_string(unsigned char *ptr, char **info)
- {
- *info = (char *)((struct cb_string *)ptr)->string;
- }
- static void cb_parse_wifi_calibration(void *ptr, struct sysinfo_t *info)
- {
- struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
- info->wifi_calibration = map_sysmem(cbmem->cbmem_tab, 0);
- }
- static void cb_parse_ramoops(void *ptr, struct sysinfo_t *info)
- {
- struct lb_range *ramoops = (struct lb_range *)ptr;
- info->ramoops_buffer = ramoops->range_start;
- info->ramoops_buffer_size = ramoops->range_size;
- }
- static void cb_parse_mtc(void *ptr, struct sysinfo_t *info)
- {
- struct lb_range *mtc = (struct lb_range *)ptr;
- info->mtc_start = mtc->range_start;
- info->mtc_size = mtc->range_size;
- }
- static void cb_parse_spi_flash(void *ptr, struct sysinfo_t *info)
- {
- struct cb_spi_flash *flash = (struct cb_spi_flash *)ptr;
- info->spi_flash.size = flash->flash_size;
- info->spi_flash.sector_size = flash->sector_size;
- info->spi_flash.erase_cmd = flash->erase_cmd;
- }
- static void cb_parse_boot_media_params(unsigned char *ptr,
- struct sysinfo_t *info)
- {
- struct cb_boot_media_params *const bmp =
- (struct cb_boot_media_params *)ptr;
- info->fmap_offset = bmp->fmap_offset;
- info->cbfs_offset = bmp->cbfs_offset;
- info->cbfs_size = bmp->cbfs_size;
- info->boot_media_size = bmp->boot_media_size;
- }
- static void cb_parse_vpd(void *ptr, struct sysinfo_t *info)
- {
- struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
- info->chromeos_vpd = map_sysmem(cbmem->cbmem_tab, 0);
- }
- static void cb_parse_tsc_info(void *ptr, struct sysinfo_t *info)
- {
- const struct cb_tsc_info *tsc_info = ptr;
- if (tsc_info->freq_khz == 0)
- return;
- /* Honor the TSC frequency passed to the payload */
- info->cpu_khz = tsc_info->freq_khz;
- }
- static void cb_parse_x86_rom_var_mtrr(void *ptr, struct sysinfo_t *info)
- {
- struct cb_x86_rom_mtrr *rom_mtrr = ptr;
- info->x86_rom_var_mtrr_index = rom_mtrr->index;
- }
- static void cb_parse_mrc_cache(void *ptr, struct sysinfo_t *info)
- {
- struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
- info->mrc_cache = map_sysmem(cbmem->cbmem_tab, 0);
- }
- __weak void cb_parse_unhandled(u32 tag, unsigned char *ptr)
- {
- }
- static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
- {
- unsigned char *ptr = addr;
- struct cb_header *header;
- int i;
- header = (struct cb_header *)ptr;
- if (!header->table_bytes)
- return 0;
- /* Make sure the checksums match */
- if (!ip_checksum_ok(header, sizeof(*header)))
- return -1;
- if (compute_ip_checksum(ptr + sizeof(*header), header->table_bytes) !=
- header->table_checksum)
- return -1;
- info->header = header;
- /*
- * Board straps represented by numerical values are small numbers.
- * Preset them to an invalid value in case the firmware does not
- * supply the info.
- */
- info->board_id = ~0;
- info->ram_code = ~0;
- /* Now, walk the tables */
- ptr += header->header_bytes;
- /* Inintialize some fields to sentinel values */
- info->vbnv_start = info->vbnv_size = (uint32_t)(-1);
- for (i = 0; i < header->table_entries; i++) {
- struct cb_record *rec = (struct cb_record *)ptr;
- /* We only care about a few tags here (maybe more later) */
- switch (rec->tag) {
- case CB_TAG_FORWARD:
- return cb_parse_header(
- (void *)(unsigned long)
- ((struct cb_forward *)rec)->forward,
- len, info);
- continue;
- case CB_TAG_MEMORY:
- cb_parse_memory(ptr, info);
- break;
- case CB_TAG_SERIAL:
- cb_parse_serial(ptr, info);
- break;
- case CB_TAG_VERSION:
- cb_parse_string(ptr, &info->cb_version);
- break;
- case CB_TAG_EXTRA_VERSION:
- cb_parse_string(ptr, &info->extra_version);
- break;
- case CB_TAG_BUILD:
- cb_parse_string(ptr, &info->build);
- break;
- case CB_TAG_COMPILE_TIME:
- cb_parse_string(ptr, &info->compile_time);
- break;
- case CB_TAG_COMPILE_BY:
- cb_parse_string(ptr, &info->compile_by);
- break;
- case CB_TAG_COMPILE_HOST:
- cb_parse_string(ptr, &info->compile_host);
- break;
- case CB_TAG_COMPILE_DOMAIN:
- cb_parse_string(ptr, &info->compile_domain);
- break;
- case CB_TAG_COMPILER:
- cb_parse_string(ptr, &info->compiler);
- break;
- case CB_TAG_LINKER:
- cb_parse_string(ptr, &info->linker);
- break;
- case CB_TAG_ASSEMBLER:
- cb_parse_string(ptr, &info->assembler);
- break;
- case CB_TAG_CMOS_OPTION_TABLE:
- cb_parse_optiontable(ptr, info);
- break;
- case CB_TAG_OPTION_CHECKSUM:
- cb_parse_checksum(ptr, info);
- break;
- /*
- * FIXME we should warn on serial if coreboot set up a
- * framebuffer buf the payload does not know about it.
- */
- case CB_TAG_FRAMEBUFFER:
- cb_parse_framebuffer(ptr, info);
- break;
- case CB_TAG_MAINBOARD:
- info->mainboard = (struct cb_mainboard *)ptr;
- break;
- case CB_TAG_GPIO:
- cb_parse_gpios(ptr, info);
- break;
- case CB_TAG_VDAT:
- cb_parse_vdat(ptr, info);
- break;
- case CB_TAG_VBNV:
- cb_parse_vbnv(ptr, info);
- break;
- case CB_TAG_VBOOT_HANDOFF:
- cb_parse_vboot_handoff(ptr, info);
- break;
- case CB_TAG_MAC_ADDRS:
- cb_parse_mac_addresses(ptr, info);
- break;
- case CB_TAG_SERIALNO:
- cb_parse_string(ptr, &info->serialno);
- break;
- case CB_TAG_TIMESTAMPS:
- cb_parse_tstamp(ptr, info);
- break;
- case CB_TAG_CBMEM_CONSOLE:
- cb_parse_cbmem_cons(ptr, info);
- break;
- case CB_TAG_ACPI_GNVS:
- cb_parse_acpi_gnvs(ptr, info);
- break;
- case CB_TAG_CBMEM_ENTRY:
- cb_parse_cbmem_entry(ptr, info);
- break;
- case CB_TAG_BOARD_ID:
- cb_parse_board_id(ptr, info);
- break;
- case CB_TAG_RAM_CODE:
- cb_parse_ram_code(ptr, info);
- break;
- case CB_TAG_WIFI_CALIBRATION:
- cb_parse_wifi_calibration(ptr, info);
- break;
- case CB_TAG_RAM_OOPS:
- cb_parse_ramoops(ptr, info);
- break;
- case CB_TAG_SPI_FLASH:
- cb_parse_spi_flash(ptr, info);
- break;
- case CB_TAG_MTC:
- cb_parse_mtc(ptr, info);
- break;
- case CB_TAG_BOOT_MEDIA_PARAMS:
- cb_parse_boot_media_params(ptr, info);
- break;
- case CB_TAG_TSC_INFO:
- cb_parse_tsc_info(ptr, info);
- break;
- case CB_TAG_VPD:
- cb_parse_vpd(ptr, info);
- break;
- case CB_TAG_X86_ROM_MTRR:
- cb_parse_x86_rom_var_mtrr(rec, info);
- break;
- case CB_TAG_MRC_CACHE:
- cb_parse_mrc_cache(rec, info);
- break;
- default:
- cb_parse_unhandled(rec->tag, ptr);
- break;
- }
- ptr += rec->size;
- }
- return 1;
- }
- /* == Architecture specific == */
- /* This is the x86 specific stuff */
- int get_coreboot_info(struct sysinfo_t *info)
- {
- long addr;
- int ret;
- addr = locate_coreboot_table();
- if (addr < 0)
- return addr;
- ret = cb_parse_header((void *)addr, 0x1000, info);
- if (!ret)
- return -ENOENT;
- gd->arch.coreboot_table = addr;
- gd->flags |= GD_FLG_SKIP_LL_INIT;
- return 0;
- }
- const struct sysinfo_t *cb_get_sysinfo(void)
- {
- if (!ll_boot_init())
- return &lib_sysinfo;
- return NULL;
- }
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