123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255 |
- // 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 <net.h>
- #include <asm/cb_sysinfo.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 __attribute__((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_vbnv(unsigned char *ptr, struct sysinfo_t *info)
- {
- struct cb_vbnv *vbnv = (struct cb_vbnv *)ptr;
- info->vbnv_start = vbnv->vbnv_start;
- info->vbnv_size = vbnv->vbnv_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 cb_vdat *vdat = (struct cb_vdat *) ptr;
- info->vdat_addr = vdat->vdat_addr;
- info->vdat_size = vdat->vdat_size;
- }
- static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info)
- {
- info->tstamp_table = ((struct cb_cbmem_tab *)ptr)->cbmem_tab;
- }
- static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info)
- {
- info->cbmem_cons = ((struct cb_cbmem_tab *)ptr)->cbmem_tab;
- }
- static void cb_parse_framebuffer(unsigned char *ptr, struct sysinfo_t *info)
- {
- info->framebuffer = (struct cb_framebuffer *)ptr;
- }
- static void cb_parse_string(unsigned char *ptr, char **info)
- {
- *info = (char *)((struct cb_string *)ptr)->string;
- }
- __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;
- /* 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->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;
- /*
- * 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_GPIO:
- cb_parse_gpios(ptr, info);
- break;
- case CB_TAG_VDAT:
- cb_parse_vdat(ptr, info);
- 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_VBNV:
- cb_parse_vbnv(ptr, info);
- break;
- case CB_TAG_CBMEM_ENTRY:
- cb_parse_cbmem_entry(ptr, 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;
- }
|