mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-30 22:08:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
Quite a few new tag types have been added over the years. Bring these into U-Boot so that all required tags can be parsed. Add a proper comment to struct sysinfo_t while we are here, since many of the meanings are not obvious. Signed-off-by: Simon Glass <sjg@chromium.org>
469 lines
11 KiB
C
469 lines
11 KiB
C
// SPDX-License-Identifier: BSD-3-Clause
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/*
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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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#include <common.h>
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#include <asm/cb_sysinfo.h>
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#include <init.h>
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#include <mapmem.h>
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#include <net.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* This needs to be in the .data section so that it's copied over during
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* relocation. By default it's put in the .bss section which is simply filled
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* with zeroes when transitioning from "ROM", which is really RAM, to other
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* RAM.
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*/
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struct sysinfo_t lib_sysinfo __attribute__((section(".data")));
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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(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_memory *mem = (struct cb_memory *)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 =
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(struct cb_memory_range *)MEM_RANGE_PTR(mem, i);
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info->memrange[info->n_memranges].base =
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UNPACK_CB64(range->start);
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info->memrange[info->n_memranges].size =
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UNPACK_CB64(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(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_serial *ser = (struct cb_serial *)ptr;
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info->serial = ser;
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}
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static void cb_parse_vboot_handoff(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct lb_range *vbho = (struct lb_range *)ptr;
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info->vboot_handoff = (void *)(uintptr_t)vbho->range_start;
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info->vboot_handoff_size = vbho->range_size;
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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_cbmem_entry(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_cbmem_entry *entry = (struct cb_cbmem_entry *)ptr;
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if (entry->id != CBMEM_ID_SMBIOS)
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return;
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info->smbios_start = entry->address;
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info->smbios_size = entry->entry_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 lb_range *vdat = (struct lb_range *)ptr;
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info->vdat_addr = map_sysmem(vdat->range_start, vdat->range_size);
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info->vdat_size = vdat->range_size;
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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(void *ptr, struct sysinfo_t *info)
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{
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struct cb_cbmem_tab *const cbmem = ptr;
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info->tstamp_table = map_sysmem(cbmem->cbmem_tab, 0);
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}
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static void cb_parse_cbmem_cons(void *ptr, struct sysinfo_t *info)
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{
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struct cb_cbmem_tab *const cbmem = ptr;
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info->cbmem_cons = map_sysmem(cbmem->cbmem_tab, 0);
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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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struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
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info->acpi_gnvs = map_sysmem(cbmem->cbmem_tab, 0);
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}
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static void cb_parse_board_id(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_board_id *const cbbid = (struct cb_board_id *)ptr;
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info->board_id = cbbid->board_id;
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}
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static void cb_parse_ram_code(unsigned char *ptr, struct sysinfo_t *info)
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{
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struct cb_ram_code *const ram_code = (struct cb_ram_code *)ptr;
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info->ram_code = ram_code->ram_code;
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}
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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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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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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 void cb_parse_wifi_calibration(void *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->wifi_calibration = map_sysmem(cbmem->cbmem_tab, 0);
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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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}
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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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struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
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info->chromeos_vpd = map_sysmem(cbmem->cbmem_tab, 0);
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}
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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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static void cb_parse_x86_rom_var_mtrr(void *ptr, struct sysinfo_t *info)
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{
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struct cb_x86_rom_mtrr *rom_mtrr = ptr;
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info->x86_rom_var_mtrr_index = rom_mtrr->index;
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}
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static void cb_parse_mrc_cache(void *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 = map_sysmem(cbmem->cbmem_tab, 0);
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}
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__weak void cb_parse_unhandled(u32 tag, unsigned char *ptr)
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{
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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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unsigned char *ptr = addr;
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struct cb_header *header;
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int i;
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header = (struct cb_header *)ptr;
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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 (!ip_checksum_ok(header, sizeof(*header)))
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return -1;
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if (compute_ip_checksum(ptr + sizeof(*header), header->table_bytes) !=
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header->table_checksum)
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return -1;
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info->header = header;
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/*
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* Board straps represented by numerical values are small numbers.
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* Preset them to an invalid value in case the firmware does not
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* supply the info.
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*/
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info->board_id = ~0;
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info->ram_code = ~0;
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/* Now, walk the tables */
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ptr += header->header_bytes;
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/* Inintialize some fields to sentinel values */
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info->vbnv_start = info->vbnv_size = (uint32_t)(-1);
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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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return cb_parse_header(
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(void *)(unsigned long)
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((struct cb_forward *)rec)->forward,
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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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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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/*
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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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*/
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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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case CB_TAG_MAINBOARD:
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info->mainboard = (struct cb_mainboard *)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_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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case CB_TAG_VBOOT_HANDOFF:
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cb_parse_vboot_handoff(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_CBMEM_ENTRY:
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cb_parse_cbmem_entry(ptr, info);
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break;
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case CB_TAG_BOARD_ID:
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cb_parse_board_id(ptr, info);
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break;
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case CB_TAG_RAM_CODE:
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cb_parse_ram_code(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_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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case CB_TAG_TSC_INFO:
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cb_parse_tsc_info(ptr, info);
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break;
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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_X86_ROM_MTRR:
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cb_parse_x86_rom_var_mtrr(rec, info);
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break;
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case CB_TAG_MRC_CACHE:
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cb_parse_mrc_cache(rec, info);
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break;
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default:
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cb_parse_unhandled(rec->tag, ptr);
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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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/* This is the x86 specific stuff */
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int get_coreboot_info(struct sysinfo_t *info)
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{
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long addr;
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int ret;
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addr = locate_coreboot_table();
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if (addr < 0)
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return addr;
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ret = cb_parse_header((void *)addr, 0x1000, info);
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if (!ret)
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return -ENOENT;
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gd->arch.coreboot_table = addr;
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gd->flags |= GD_FLG_SKIP_LL_INIT;
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return 0;
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}
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const struct sysinfo_t *cb_get_sysinfo(void)
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{
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if (!ll_boot_init())
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return &lib_sysinfo;
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return NULL;
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}
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