mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
378a8634ad
There is no need to explicitly write 'arch-coreboot' when including headers, as when the arch directory points to coreboot the correct files will be used. Signed-off-by: Simon Glass <sjg@chromium.org>
235 lines
5.8 KiB
C
235 lines
5.8 KiB
C
/*
|
|
* This file is part of the libpayload project.
|
|
*
|
|
* Copyright (C) 2008 Advanced Micro Devices, Inc.
|
|
* Copyright (C) 2009 coresystems GmbH
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/arch/ipchecksum.h>
|
|
#include <asm/arch/sysinfo.h>
|
|
#include <asm/arch/tables.h>
|
|
|
|
/*
|
|
* 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_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;
|
|
}
|
|
|
|
static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
|
|
{
|
|
struct cb_header *header;
|
|
unsigned char *ptr = (unsigned char *)addr;
|
|
int i;
|
|
|
|
for (i = 0; i < len; i += 16, ptr += 16) {
|
|
header = (struct cb_header *)ptr;
|
|
if (!strncmp((const char *)header->signature, "LBIO", 4))
|
|
break;
|
|
}
|
|
|
|
/* We walked the entire space and didn't find anything. */
|
|
if (i >= len)
|
|
return -1;
|
|
|
|
if (!header->table_bytes)
|
|
return 0;
|
|
|
|
/* Make sure the checksums match. */
|
|
if (ipchksum((u16 *) header, sizeof(*header)) != 0)
|
|
return -1;
|
|
|
|
if (ipchksum((u16 *) (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;
|
|
}
|
|
|
|
ptr += rec->size;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* == Architecture specific == */
|
|
/* This is the x86 specific stuff. */
|
|
|
|
int get_coreboot_info(struct sysinfo_t *info)
|
|
{
|
|
int ret = cb_parse_header((void *)0x00000000, 0x1000, info);
|
|
|
|
if (ret != 1)
|
|
ret = cb_parse_header((void *)0x000f0000, 0x1000, info);
|
|
|
|
return (ret == 1) ? 0 : -1;
|
|
}
|