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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*/
#define LOG_CATEGORY LOGC_ACPI
#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>
#include <linux/log2.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
/*
* tables which can go in the bloblist must be last in this list, so
* that the calculation of gd->table_end works properly
*/
#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 high_table, table_size;
struct memory_area cfg_tables[ARRAY_SIZE(table_list) + 1];
bool use_high = false;
u32 rom_addr;
int i;
gd->arch.table_start = ROM_TABLE_ADDR;
rom_addr = gd->arch.table_start;
debug("Writing tables to %x:\n", rom_addr);
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;
u32 rom_table_end;
if (!strcmp("smbios", table->name))
gd->arch.smbios_start = rom_addr;
if (IS_ENABLED(CONFIG_BLOBLIST_TABLES) && table->tag) {
if (!gd->arch.table_end)
gd->arch.table_end = rom_addr;
rom_addr = (ulong)bloblist_add(table->tag, size,
ilog2(table->align));
if (!rom_addr)
return log_msg_ret("bloblist", -ENOBUFS);
/* the bloblist is always in high memory */
use_high = true;
if (!gd->arch.table_start_high)
gd->arch.table_start_high = rom_addr;
}
rom_table_end = table->write(rom_addr);
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_addr;
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_addr, rom_table_end);
if (rom_table_end - rom_addr > size) {
log_err("Out of space for configuration tables: need %x, have %x\n",
rom_table_end - rom_addr, size);
return log_msg_ret("bloblist", -ENOSPC);
}
rom_addr = rom_table_end;
}
if (use_high)
gd->arch.table_end_high = rom_addr;
else
gd->arch.table_end = rom_addr;
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;
}
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