Angel Pons | 7d3e161 | 2024-04-12 17:02:24 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <cbmem.h> |
| 4 | #include <console/console.h> |
| 5 | #include <device/dram/ddr2.h> |
| 6 | #include <device/dram/ddr3.h> |
| 7 | #include <device/smbus_host.h> |
| 8 | #include <lib.h> |
| 9 | #include <memory_info.h> |
| 10 | #include <spd.h> |
| 11 | |
| 12 | #include "gm45.h" |
| 13 | #include "chip.h" |
| 14 | |
| 15 | static u8 get_dimm_mod_type(const sysinfo_t *sysinfo, const int idx) |
| 16 | { |
| 17 | if (sysinfo->spd_type == DDR2) { |
| 18 | return smbus_read_byte(sysinfo->spd_map[idx], 20) & SPD_DDR2_DIMM_TYPE_MASK; |
| 19 | } else { |
| 20 | return smbus_read_byte(sysinfo->spd_map[idx], 3) & 0xf; |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | static void ddr3_read_ids(const sysinfo_t *sysinfo, struct dimm_info *dimm, const int idx) |
| 25 | { |
| 26 | const u8 addr = sysinfo->spd_map[idx]; |
| 27 | for (int k = 0; k < SPD_DIMM_SERIAL_LEN; k++) { |
| 28 | dimm->serial[k] = smbus_read_byte(addr, SPD_DIMM_SERIAL_NUM + k); |
| 29 | } |
| 30 | for (int k = 0; k < SPD_DIMM_PART_LEN; k++) { |
| 31 | dimm->module_part_number[k] = smbus_read_byte(addr, SPD_DIMM_PART_NUM + k); |
| 32 | } |
| 33 | dimm->mod_id = (smbus_read_byte(addr, SPD_DIMM_MOD_ID2) << 8) | |
| 34 | (smbus_read_byte(addr, SPD_DIMM_MOD_ID1) << 0); |
| 35 | } |
| 36 | |
| 37 | static u32 get_mem_clock_mt(const int clock_index) |
| 38 | { |
| 39 | switch (clock_index) { |
| 40 | case MEM_CLOCK_1067MT: return 1067; |
| 41 | case MEM_CLOCK_800MT: return 800; |
| 42 | case MEM_CLOCK_667MT: return 667; |
| 43 | default: return 0; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | void setup_sdram_meminfo(const sysinfo_t *sysinfo) |
| 48 | { |
| 49 | struct memory_info *mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(struct memory_info)); |
| 50 | if (!mem_info) |
| 51 | die("Failed to add memory info to CBMEM.\n"); |
| 52 | |
| 53 | memset(mem_info, 0, sizeof(struct memory_info)); |
| 54 | |
| 55 | const u16 ddr_type = (sysinfo->spd_type == DDR2) ? MEMORY_TYPE_DDR2 : MEMORY_TYPE_DDR3; |
| 56 | const u32 ddr_freq_mt = get_mem_clock_mt(sysinfo->selected_timings.mem_clock); |
| 57 | |
| 58 | int dimm_cnt = 0; |
| 59 | |
| 60 | int ch; |
| 61 | FOR_EACH_POPULATED_CHANNEL(sysinfo->dimms, ch) { |
| 62 | struct dimm_info *dimm = &mem_info->dimm[dimm_cnt]; |
| 63 | const int idx = ch * 2; |
| 64 | const int ranks = sysinfo->dimms[ch].ranks; |
| 65 | dimm->dimm_size = (256 << sysinfo->dimms[ch].chip_capacity) * ranks; |
| 66 | dimm->ddr_type = ddr_type; |
| 67 | dimm->ddr_frequency = ddr_freq_mt; |
| 68 | dimm->rank_per_dimm = ranks; |
| 69 | dimm->channel_num = ch; |
| 70 | dimm->dimm_num = 0; |
| 71 | dimm->bank_locator = ch; |
| 72 | /* TODO: Handle DDR2 SPDs */ |
| 73 | if (sysinfo->spd_type == DDR3) { |
| 74 | ddr3_read_ids(sysinfo, dimm, idx); |
| 75 | } |
| 76 | dimm->mod_type = get_dimm_mod_type(sysinfo, idx); |
| 77 | dimm->bus_width = MEMORY_BUS_WIDTH_64; |
| 78 | dimm_cnt++; |
| 79 | } |
| 80 | mem_info->dimm_cnt = dimm_cnt; |
| 81 | |
| 82 | mem_info->ecc_type = MEMORY_ARRAY_ECC_NONE; |
| 83 | mem_info->max_capacity_mib = 8192; |
| 84 | mem_info->number_of_devices = 2; |
| 85 | } |