u-boot/arch/x86/lib/tables.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*/
#include <common.h>
#include <log.h>
#include <malloc.h>
#include <smbios.h>
#include <acpi/acpi_table.h>
#include <asm/sfi.h>
#include <asm/mpspec.h>
#include <asm/tables.h>
#include <asm/coreboot_tables.h>
/**
* 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
*/
struct table_info {
const char *name;
table_write write;
};
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, },
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
{ "smbios", write_smbios_table, },
#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;
}
void write_tables(void)
{
u32 rom_table_start = ROM_TABLE_ADDR;
u32 rom_table_end;
#ifdef CONFIG_SEABIOS
u32 high_table, table_size;
struct memory_area cfg_tables[ARRAY_SIZE(table_list) + 1];
#endif
int i;
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];
rom_table_end = table->write(rom_table_start);
rom_table_end = ALIGN(rom_table_end, ROM_TABLE_ALIGN);
#ifdef CONFIG_SEABIOS
table_size = rom_table_end - rom_table_start;
high_table = (u32)high_table_malloc(table_size);
if (high_table) {
table->write(high_table);
cfg_tables[i].start = high_table;
cfg_tables[i].size = table_size;
} else {
printf("%d: no memory for configuration tables\n", i);
}
#endif
debug("- wrote '%s' to %x, end %x\n", table->name,
rom_table_start, rom_table_end);
rom_table_start = rom_table_end;
}
#ifdef CONFIG_SEABIOS
/* make sure the last item is zero */
cfg_tables[i].size = 0;
write_coreboot_table(CB_TABLE_ADDR, cfg_tables);
#endif
debug("- done writing tables\n");
}