u-boot/arch/x86/lib/tables.c
Heinrich Schuchardt c193d9bd28 smbios: error handling for invalid addresses
SMBIOS tables only support 32bit addresses. If we don't have memory here
handle the error gracefully:

* on x86_64 fail to start U-Boot
* during UEFI booting ignore the missing table

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-07-24 10:49:51 +02:00

164 lines
4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*/
#define LOG_CATEGORY LOGC_BOARD
#include <common.h>
#include <bloblist.h>
#include <log.h>
#include <malloc.h>
#include <smbios.h>
#include <acpi/acpi_table.h>
#include <asm/global_data.h>
#include <asm/sfi.h>
#include <asm/mpspec.h>
#include <asm/tables.h>
#include <asm/coreboot_tables.h>
DECLARE_GLOBAL_DATA_PTR;
/**
* Function prototype to write a specific configuration table
*
* @addr: start address to write the table
* @return: end address of the table
*/
typedef ulong (*table_write)(ulong addr);
/**
* struct table_info - Information about each table to write
*
* @name: Name of table (for debugging)
* @write: Function to call to write this table
* @tag: Bloblist tag if using CONFIG_BLOBLIST_TABLES
* @size: Maximum table size
* @align: Table alignment in bytes
*/
struct table_info {
const char *name;
table_write write;
enum bloblist_tag_t tag;
int size;
int align;
};
static struct table_info table_list[] = {
#ifdef CONFIG_GENERATE_PIRQ_TABLE
{ "pirq", write_pirq_routing_table },
#endif
#ifdef CONFIG_GENERATE_SFI_TABLE
{ "sfi", write_sfi_table, },
#endif
#ifdef CONFIG_GENERATE_MP_TABLE
{ "mp", write_mp_table, },
#endif
#ifdef CONFIG_GENERATE_ACPI_TABLE
{ "acpi", write_acpi_tables, BLOBLISTT_ACPI_TABLES, 0x10000, 0x1000},
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
{ "smbios", write_smbios_table, BLOBLISTT_SMBIOS_TABLES, 0x1000, 0x100},
#endif
};
void table_fill_string(char *dest, const char *src, size_t n, char pad)
{
int start, len;
int i;
strncpy(dest, src, n);
/* Fill the remaining bytes with pad */
len = strlen(src);
start = len < n ? len : n;
for (i = start; i < n; i++)
dest[i] = pad;
}
int write_tables(void)
{
u32 rom_table_start;
u32 rom_table_end;
u32 high_table, table_size;
struct memory_area cfg_tables[ARRAY_SIZE(table_list) + 1];
int i;
rom_table_start = ROM_TABLE_ADDR;
debug("Writing tables to %x:\n", rom_table_start);
for (i = 0; i < ARRAY_SIZE(table_list); i++) {
const struct table_info *table = &table_list[i];
int size = table->size ? : CONFIG_ROM_TABLE_SIZE;
if (IS_ENABLED(CONFIG_BLOBLIST_TABLES) && table->tag) {
rom_table_start = (ulong)bloblist_add(table->tag, size,
table->align);
if (!rom_table_start)
return log_msg_ret("bloblist", -ENOBUFS);
}
rom_table_end = table->write(rom_table_start);
if (!rom_table_end) {
log_err("Can't create configuration table %d\n", i);
return -EINTR;
}
if (IS_ENABLED(CONFIG_SEABIOS)) {
table_size = rom_table_end - rom_table_start;
high_table = (u32)(ulong)high_table_malloc(table_size);
if (high_table) {
if (!table->write(high_table)) {
log_err("Can't create configuration table %d\n",
i);
return -EINTR;
}
cfg_tables[i].start = high_table;
cfg_tables[i].size = table_size;
} else {
printf("%d: no memory for configuration tables\n",
i);
return -ENOSPC;
}
}
debug("- wrote '%s' to %x, end %x\n", table->name,
rom_table_start, rom_table_end);
if (rom_table_end - rom_table_start > size) {
log_err("Out of space for configuration tables: need %x, have %x\n",
rom_table_end - rom_table_start, size);
return log_msg_ret("bloblist", -ENOSPC);
}
rom_table_start = rom_table_end;
}
if (IS_ENABLED(CONFIG_SEABIOS)) {
/* make sure the last item is zero */
cfg_tables[i].size = 0;
write_coreboot_table(CB_TABLE_ADDR, cfg_tables);
}
if (IS_ENABLED(CONFIG_BLOBLIST_TABLES)) {
void *ptr = (void *)CONFIG_ROM_TABLE_ADDR;
/* Write an RSDP pointing to the tables */
if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) {
struct acpi_ctx *ctx = gd_acpi_ctx();
acpi_write_rsdp(ptr, ctx->rsdt, ctx->xsdt);
ptr += ALIGN(sizeof(struct acpi_rsdp), 16);
}
if (IS_ENABLED(CONFIG_GENERATE_SMBIOS_TABLE)) {
void *smbios;
smbios = bloblist_find(BLOBLISTT_SMBIOS_TABLES, 0);
if (!smbios)
return log_msg_ret("smbios", -ENOENT);
memcpy(ptr, smbios, sizeof(struct smbios_entry));
}
}
debug("- done writing tables\n");
return 0;
}