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