1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
6 #define LOG_CATEGORY LOGC_ACPI
13 #include <acpi/acpi_table.h>
14 #include <asm/global_data.h>
16 #include <asm/mpspec.h>
17 #include <asm/tables.h>
18 #include <asm/coreboot_tables.h>
20 DECLARE_GLOBAL_DATA_PTR;
23 * Function prototype to write a specific configuration table
25 * @addr: start address to write the table
26 * @return: end address of the table
28 typedef ulong (*table_write)(ulong addr);
31 * struct table_info - Information about each table to write
33 * @name: Name of table (for debugging)
34 * @write: Function to call to write this table
35 * @tag: Bloblist tag if using CONFIG_BLOBLIST_TABLES
36 * @size: Maximum table size
37 * @align: Table alignment in bytes
42 enum bloblist_tag_t tag;
47 static struct table_info table_list[] = {
48 #ifdef CONFIG_GENERATE_PIRQ_TABLE
49 { "pirq", write_pirq_routing_table },
51 #ifdef CONFIG_GENERATE_SFI_TABLE
52 { "sfi", write_sfi_table, },
54 #ifdef CONFIG_GENERATE_MP_TABLE
55 { "mp", write_mp_table, },
58 * tables which can go in the bloblist must be last in this list, so
59 * that the calculation of gd->table_end works properly
61 #ifdef CONFIG_GENERATE_ACPI_TABLE
62 { "acpi", write_acpi_tables, BLOBLISTT_ACPI_TABLES, 0x10000, 0x1000},
64 #ifdef CONFIG_GENERATE_SMBIOS_TABLE
65 { "smbios", write_smbios_table, BLOBLISTT_SMBIOS_TABLES, 0x1000, 0x100},
69 void table_fill_string(char *dest, const char *src, size_t n, char pad)
74 strncpy(dest, src, n);
76 /* Fill the remaining bytes with pad */
78 start = len < n ? len : n;
79 for (i = start; i < n; i++)
83 int write_tables(void)
85 u32 high_table, table_size;
86 struct memory_area cfg_tables[ARRAY_SIZE(table_list) + 1];
87 bool use_high = false;
91 gd->arch.table_start = ROM_TABLE_ADDR;
92 rom_addr = gd->arch.table_start;
94 debug("Writing tables to %x:\n", rom_addr);
95 for (i = 0; i < ARRAY_SIZE(table_list); i++) {
96 const struct table_info *table = &table_list[i];
97 int size = table->size ? : CONFIG_ROM_TABLE_SIZE;
100 if (IS_ENABLED(CONFIG_BLOBLIST_TABLES) && table->tag) {
101 if (!gd->arch.table_end)
102 gd->arch.table_end = rom_addr;
103 rom_addr = (ulong)bloblist_add(table->tag, size,
106 return log_msg_ret("bloblist", -ENOBUFS);
108 /* the bloblist is always in high memory */
110 if (!gd->arch.table_start_high)
111 gd->arch.table_start_high = rom_addr;
113 rom_table_end = table->write(rom_addr);
114 if (!rom_table_end) {
115 log_err("Can't create configuration table %d\n", i);
119 if (IS_ENABLED(CONFIG_SEABIOS)) {
120 table_size = rom_table_end - rom_addr;
121 high_table = (u32)(ulong)high_table_malloc(table_size);
123 if (!table->write(high_table)) {
124 log_err("Can't create configuration table %d\n",
129 cfg_tables[i].start = high_table;
130 cfg_tables[i].size = table_size;
132 printf("%d: no memory for configuration tables\n",
138 debug("- wrote '%s' to %x, end %x\n", table->name,
139 rom_addr, rom_table_end);
140 if (rom_table_end - rom_addr > size) {
141 log_err("Out of space for configuration tables: need %x, have %x\n",
142 rom_table_end - rom_addr, size);
143 return log_msg_ret("bloblist", -ENOSPC);
145 rom_addr = rom_table_end;
149 gd->arch.table_end_high = rom_addr;
151 gd->arch.table_end = rom_addr;
153 if (IS_ENABLED(CONFIG_SEABIOS)) {
154 /* make sure the last item is zero */
155 cfg_tables[i].size = 0;
156 write_coreboot_table(CB_TABLE_ADDR, cfg_tables);
159 if (IS_ENABLED(CONFIG_BLOBLIST_TABLES)) {
160 void *ptr = (void *)CONFIG_ROM_TABLE_ADDR;
162 /* Write an RSDP pointing to the tables */
163 if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) {
164 struct acpi_ctx *ctx = gd_acpi_ctx();
166 acpi_write_rsdp(ptr, ctx->rsdt, ctx->xsdt);
167 ptr += ALIGN(sizeof(struct acpi_rsdp), 16);
169 if (IS_ENABLED(CONFIG_GENERATE_SMBIOS_TABLE)) {
172 smbios = bloblist_find(BLOBLISTT_SMBIOS_TABLES, 0);
174 return log_msg_ret("smbios", -ENOENT);
175 memcpy(ptr, smbios, sizeof(struct smbios_entry));
179 debug("- done writing tables\n");