1 /* 2 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <malloc.h> 9 #include <asm/sfi.h> 10 #include <asm/mpspec.h> 11 #include <asm/smbios.h> 12 #include <asm/tables.h> 13 #include <asm/acpi_table.h> 14 #include <asm/coreboot_tables.h> 15 16 /** 17 * Function prototype to write a specific configuration table 18 * 19 * @addr: start address to write the table 20 * @return: end address of the table 21 */ 22 typedef u32 (*table_write)(u32 addr); 23 24 static table_write table_write_funcs[] = { 25 #ifdef CONFIG_GENERATE_PIRQ_TABLE 26 write_pirq_routing_table, 27 #endif 28 #ifdef CONFIG_GENERATE_SFI_TABLE 29 write_sfi_table, 30 #endif 31 #ifdef CONFIG_GENERATE_MP_TABLE 32 write_mp_table, 33 #endif 34 #ifdef CONFIG_GENERATE_ACPI_TABLE 35 write_acpi_tables, 36 #endif 37 #ifdef CONFIG_GENERATE_SMBIOS_TABLE 38 write_smbios_table, 39 #endif 40 }; 41 42 u8 table_compute_checksum(void *v, int len) 43 { 44 u8 *bytes = v; 45 u8 checksum = 0; 46 int i; 47 48 for (i = 0; i < len; i++) 49 checksum -= bytes[i]; 50 51 return checksum; 52 } 53 54 void table_fill_string(char *dest, const char *src, size_t n, char pad) 55 { 56 int start, len; 57 int i; 58 59 strncpy(dest, src, n); 60 61 /* Fill the remaining bytes with pad */ 62 len = strlen(src); 63 start = len < n ? len : n; 64 for (i = start; i < n; i++) 65 dest[i] = pad; 66 } 67 68 void write_tables(void) 69 { 70 u32 rom_table_start = ROM_TABLE_ADDR; 71 u32 rom_table_end; 72 #ifdef CONFIG_SEABIOS 73 u32 high_table, table_size; 74 struct memory_area cfg_tables[ARRAY_SIZE(table_write_funcs) + 1]; 75 #endif 76 int i; 77 78 for (i = 0; i < ARRAY_SIZE(table_write_funcs); i++) { 79 rom_table_end = table_write_funcs[i](rom_table_start); 80 rom_table_end = ALIGN(rom_table_end, ROM_TABLE_ALIGN); 81 82 #ifdef CONFIG_SEABIOS 83 table_size = rom_table_end - rom_table_start; 84 high_table = (u32)memalign(ROM_TABLE_ALIGN, table_size); 85 if (high_table) { 86 memset((void *)high_table, 0, table_size); 87 table_write_funcs[i](high_table); 88 89 cfg_tables[i].start = high_table; 90 cfg_tables[i].size = table_size; 91 } else { 92 printf("%d: no memory for configuration tables\n", i); 93 } 94 #endif 95 96 rom_table_start = rom_table_end; 97 } 98 99 #ifdef CONFIG_SEABIOS 100 /* make sure the last item is zero */ 101 cfg_tables[i].size = 0; 102 write_coreboot_table(CB_TABLE_ADDR, cfg_tables); 103 #endif 104 } 105