Angel Pons | 58c0d32 | 2020-04-05 13:20:46 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 2 | |
| 3 | #include <cbfs.h> |
| 4 | #include <console/console.h> |
| 5 | #include <endian.h> |
| 6 | #include <string.h> |
| 7 | #include <soc/gpio.h> |
| 8 | #include <soc/pei_data.h> |
| 9 | #include <soc/romstage.h> |
| 10 | #include <ec/google/chromeec/ec.h> |
| 11 | #include <mainboard/google/auron/ec.h> |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 12 | #include <variant/spd.h> |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 13 | |
| 14 | static void mainboard_print_spd_info(uint8_t spd[]) |
| 15 | { |
| 16 | const int spd_banks[8] = { 8, 16, 32, 64, -1, -1, -1, -1 }; |
| 17 | const int spd_capmb[8] = { 1, 2, 4, 8, 16, 32, 64, 0 }; |
| 18 | const int spd_rows[8] = { 12, 13, 14, 15, 16, -1, -1, -1 }; |
| 19 | const int spd_cols[8] = { 9, 10, 11, 12, -1, -1, -1, -1 }; |
| 20 | const int spd_ranks[8] = { 1, 2, 3, 4, -1, -1, -1, -1 }; |
| 21 | const int spd_devw[8] = { 4, 8, 16, 32, -1, -1, -1, -1 }; |
| 22 | const int spd_busw[8] = { 8, 16, 32, 64, -1, -1, -1, -1 }; |
| 23 | char spd_name[SPD_PART_LEN+1] = { 0 }; |
| 24 | |
| 25 | int banks = spd_banks[(spd[SPD_DENSITY_BANKS] >> 4) & 7]; |
| 26 | int capmb = spd_capmb[spd[SPD_DENSITY_BANKS] & 7] * 256; |
| 27 | int rows = spd_rows[(spd[SPD_ADDRESSING] >> 3) & 7]; |
| 28 | int cols = spd_cols[spd[SPD_ADDRESSING] & 7]; |
| 29 | int ranks = spd_ranks[(spd[SPD_ORGANIZATION] >> 3) & 7]; |
| 30 | int devw = spd_devw[spd[SPD_ORGANIZATION] & 7]; |
| 31 | int busw = spd_busw[spd[SPD_BUS_DEV_WIDTH] & 7]; |
| 32 | |
| 33 | /* Module type */ |
| 34 | printk(BIOS_INFO, "SPD: module type is "); |
| 35 | switch (spd[SPD_DRAM_TYPE]) { |
| 36 | case SPD_DRAM_DDR3: |
| 37 | printk(BIOS_INFO, "DDR3\n"); |
| 38 | break; |
| 39 | case SPD_DRAM_LPDDR3: |
| 40 | printk(BIOS_INFO, "LPDDR3\n"); |
| 41 | break; |
| 42 | default: |
| 43 | printk(BIOS_INFO, "Unknown (%02x)\n", spd[SPD_DRAM_TYPE]); |
| 44 | break; |
| 45 | } |
| 46 | |
| 47 | /* Module Part Number */ |
| 48 | memcpy(spd_name, &spd[SPD_PART_OFF], SPD_PART_LEN); |
| 49 | spd_name[SPD_PART_LEN] = 0; |
| 50 | printk(BIOS_INFO, "SPD: module part is %s\n", spd_name); |
| 51 | |
| 52 | printk(BIOS_INFO, "SPD: banks %d, ranks %d, rows %d, columns %d, " |
| 53 | , banks, ranks, rows, cols); |
| 54 | printk(BIOS_INFO, "density %d Mb\n", capmb); |
| 55 | |
| 56 | printk(BIOS_INFO, "SPD: device width %d bits, bus width %d bits\n", |
| 57 | devw, busw); |
| 58 | |
| 59 | if (capmb > 0 && busw > 0 && devw > 0 && ranks > 0) { |
| 60 | /* SIZE = DENSITY / 8 * BUS_WIDTH / SDRAM_WIDTH * RANKS */ |
| 61 | printk(BIOS_INFO, "SPD: module size is %u MB (per channel)\n", |
| 62 | capmb / 8 * busw / devw * ranks); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | /* Copy SPD data for on-board memory */ |
| 67 | void mainboard_fill_spd_data(struct pei_data *pei_data) |
| 68 | { |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 69 | int spd_bits[4] = { |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 70 | SPD_GPIO_BIT0, |
| 71 | SPD_GPIO_BIT1, |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 72 | SPD_GPIO_BIT2, |
| 73 | SPD_GPIO_BIT3 |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 74 | }; |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 75 | int spd_gpio[4]; |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 76 | int spd_index; |
| 77 | size_t spd_file_len; |
| 78 | char *spd_file; |
| 79 | |
| 80 | spd_gpio[0] = get_gpio(SPD_GPIO_BIT0); |
| 81 | spd_gpio[1] = get_gpio(SPD_GPIO_BIT1); |
| 82 | spd_gpio[2] = get_gpio(SPD_GPIO_BIT2); |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 83 | spd_gpio[3] = get_gpio(SPD_GPIO_BIT3); |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 84 | |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 85 | spd_index = (spd_gpio[3] << 3) | (spd_gpio[2] << 2) | |
| 86 | (spd_gpio[1] << 1) | spd_gpio[0]; |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 87 | |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 88 | printk(BIOS_DEBUG, "SPD: index %d (GPIO%d=%d GPIO%d=%d GPIO%d=%d GPIO%d=%d)\n", |
| 89 | spd_index, |
| 90 | spd_bits[3], spd_gpio[3], |
| 91 | spd_bits[2], spd_gpio[2], |
| 92 | spd_bits[1], spd_gpio[1], |
| 93 | spd_bits[0], spd_gpio[0]); |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 94 | |
Julius Werner | 834b3ec | 2020-03-04 16:52:08 -0800 | [diff] [blame^] | 95 | spd_file = cbfs_map("spd.bin", &spd_file_len); |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 96 | if (!spd_file) |
| 97 | die("SPD data not found."); |
| 98 | |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 99 | if (spd_file_len < ((spd_index + 1) * SPD_LEN)) { |
| 100 | printk(BIOS_ERR, "SPD index override to 0 - old hardware?\n"); |
| 101 | spd_index = 0; |
| 102 | } |
| 103 | |
| 104 | if (spd_file_len < SPD_LEN) |
| 105 | die("Missing SPD data."); |
| 106 | |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 107 | /* CH0 */ |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 108 | memcpy(pei_data->spd_data[0][0], |
Tim Chen | f3214d02 | 2014-10-14 20:17:11 +0800 | [diff] [blame] | 109 | spd_file + (spd_index * SPD_LEN), SPD_LEN); |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 110 | |
| 111 | /* CH1 not used in 2GB configurations */ |
| 112 | if (!((spd_index == 0b0000) || (spd_index == 0b0011) || |
| 113 | (spd_index == 0b1010))) { |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 114 | memcpy(pei_data->spd_data[1][0], |
Tim Chen | f3214d02 | 2014-10-14 20:17:11 +0800 | [diff] [blame] | 115 | spd_file + (spd_index * SPD_LEN), SPD_LEN); |
Matt DeVillier | 45e11aa | 2016-12-18 11:59:58 -0600 | [diff] [blame] | 116 | } |
Marc Jones | d862121 | 2015-06-09 21:18:38 -0600 | [diff] [blame] | 117 | |
| 118 | /* Make sure a valid SPD was found */ |
| 119 | if (pei_data->spd_data[0][0][0] == 0) |
| 120 | die("Invalid SPD data."); |
| 121 | |
| 122 | mainboard_print_spd_info(pei_data->spd_data[0][0]); |
| 123 | } |