| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <assert.h> |
| #include <bootmode.h> |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <ip_checksum.h> |
| #include <mrc_cache.h> |
| #include <soc/dramc_param.h> |
| #include <soc/emi.h> |
| #include <soc/mmu_operations.h> |
| #include <symbols.h> |
| #include <timer.h> |
| |
| /* This must be defined in chromeos.fmd in same name and size. */ |
| #define CALIBRATION_REGION "RW_MRC_CACHE" |
| #define CALIBRATION_REGION_SIZE 0x2000 |
| |
| _Static_assert(sizeof(struct dramc_param) <= CALIBRATION_REGION_SIZE, |
| "sizeof(struct dramc_param) exceeds " CALIBRATION_REGION); |
| |
| const char *get_dram_geometry_str(u32 ddr_geometry); |
| const char *get_dram_type_str(u32 ddr_type); |
| |
| static int mt_mem_test(const struct dramc_data *dparam) |
| { |
| if (CONFIG(MEMORY_TEST)) { |
| u8 *addr = _dram; |
| const struct ddr_base_info *ddr_info = &dparam->ddr_info; |
| |
| for (u8 rank = RANK_0; rank < ddr_info->support_ranks; rank++) { |
| int result = complex_mem_test(addr, 0x2000); |
| |
| if (result != 0) { |
| printk(BIOS_ERR, |
| "[MEM] complex R/W mem test failed: %d\n", result); |
| return -1; |
| } |
| printk(BIOS_DEBUG, "[MEM] rank %u complex R/W mem test passed\n", rank); |
| |
| addr += ddr_info->rank_size[rank]; |
| } |
| } |
| |
| return 0; |
| } |
| |
| const char *get_dram_geometry_str(u32 ddr_geometry) |
| { |
| const char *s; |
| |
| switch (ddr_geometry) { |
| case DDR_TYPE_2CH_2RK_4GB_2_2: |
| s = "2CH_2RK_4GB_2_2"; |
| break; |
| case DDR_TYPE_2CH_2RK_6GB_3_3: |
| s = "2CH_2RK_6GB_3_3"; |
| break; |
| case DDR_TYPE_2CH_2RK_8GB_4_4: |
| s = "2CH_2RK_8GB_4_4"; |
| break; |
| case DDR_TYPE_2CH_2RK_8GB_4_4_BYTE: |
| s = "2CH_2RK_8GB_4_4_BYTE"; |
| break; |
| case DDR_TYPE_2CH_1RK_4GB_4_0: |
| s = "2CH_1RK_4GB_4_0"; |
| break; |
| case DDR_TYPE_2CH_2RK_6GB_2_4: |
| s = "2CH_2RK_6GB_2_4"; |
| break; |
| default: |
| s = ""; |
| break; |
| } |
| |
| return s; |
| } |
| |
| const char *get_dram_type_str(u32 ddr_type) |
| { |
| const char *s; |
| |
| switch (ddr_type) { |
| case DDR_TYPE_DISCRETE: |
| s = "DSC"; |
| break; |
| case DDR_TYPE_EMCP: |
| s = "EMCP"; |
| break; |
| default: |
| s = ""; |
| break; |
| } |
| |
| return s; |
| } |
| |
| static int dram_run_fast_calibration(struct dramc_param *dparam) |
| { |
| const u16 config = CONFIG(MEDIATEK_DRAM_DVFS) ? DRAMC_ENABLE_DVFS : DRAMC_DISABLE_DVFS; |
| if (dparam->dramc_datas.ddr_info.config_dvfs != config) { |
| printk(BIOS_WARNING, |
| "DRAM-K: Incompatible config for calibration data from flash " |
| "(expected: %#x, saved: %#x)\n", |
| config, dparam->dramc_datas.ddr_info.config_dvfs); |
| return -1; |
| } |
| |
| printk(BIOS_INFO, "DRAM-K: DRAM calibration data valid pass\n"); |
| init_dram_by_params(dparam); |
| if (mt_mem_test(&dparam->dramc_datas) == 0) |
| return 0; |
| |
| return DRAMC_ERR_FAST_CALIBRATION; |
| } |
| |
| static int dram_run_full_calibration(struct dramc_param *dparam) |
| { |
| /* Load and run the provided blob for full-calibration if available */ |
| struct prog dram = PROG_INIT(PROG_REFCODE, CONFIG_CBFS_PREFIX "/dram"); |
| |
| initialize_dramc_param(dparam); |
| dump_param_header(dparam); |
| |
| if (cbfs_prog_stage_load(&dram)) { |
| printk(BIOS_ERR, "DRAM-K: CBFS load program failed\n"); |
| return -2; |
| } |
| |
| dparam->do_putc = do_putchar; |
| |
| prog_set_entry(&dram, prog_entry(&dram), dparam); |
| prog_run(&dram); |
| if (dparam->header.status != DRAMC_SUCCESS) { |
| printk(BIOS_ERR, "DRAM-K: Full calibration failed: status = %d\n", |
| dparam->header.status); |
| return -3; |
| } |
| |
| if (!(dparam->header.flags & DRAMC_FLAG_HAS_SAVED_DATA)) { |
| printk(BIOS_ERR, |
| "DRAM-K: Full calibration executed without saving parameters. " |
| "Please ensure the blob is built properly.\n"); |
| return -4; |
| } |
| |
| return 0; |
| } |
| |
| static void mem_init_set_default_config(struct dramc_param *dparam, |
| const struct sdram_info *dram_info) |
| { |
| u32 type, geometry; |
| memset(dparam, 0, sizeof(*dparam)); |
| |
| type = dram_info->ddr_type; |
| geometry = dram_info->ddr_geometry; |
| |
| dparam->dramc_datas.ddr_info.sdram.ddr_type = type; |
| |
| if (CONFIG(MEDIATEK_DRAM_DVFS)) |
| dparam->dramc_datas.ddr_info.config_dvfs = DRAMC_ENABLE_DVFS; |
| |
| dparam->dramc_datas.ddr_info.sdram.ddr_geometry = geometry; |
| |
| printk(BIOS_INFO, "DRAM-K: ddr_type: %s, config_dvfs: %d, ddr_geometry: %s\n", |
| get_dram_type_str(type), |
| dparam->dramc_datas.ddr_info.config_dvfs, |
| get_dram_geometry_str(geometry)); |
| } |
| |
| static void mt_mem_init_run(struct dramc_param *dparam, |
| const struct sdram_info *dram_info) |
| { |
| const ssize_t mrc_cache_size = sizeof(dparam->dramc_datas); |
| ssize_t data_size; |
| struct stopwatch sw; |
| int ret; |
| |
| /* Load calibration params from flash and run fast calibration */ |
| mem_init_set_default_config(dparam, dram_info); |
| data_size = mrc_cache_load_current(MRC_TRAINING_DATA, |
| DRAMC_PARAM_HEADER_VERSION, |
| &dparam->dramc_datas, |
| mrc_cache_size); |
| if (data_size == mrc_cache_size) { |
| printk(BIOS_INFO, "DRAM-K: Running fast calibration\n"); |
| stopwatch_init(&sw); |
| |
| ret = dram_run_fast_calibration(dparam); |
| if (ret != 0) { |
| printk(BIOS_ERR, "DRAM-K: Failed to run fast calibration " |
| "in %ld msecs, error: %d\n", |
| stopwatch_duration_msecs(&sw), ret); |
| |
| /* Erase flash data after fast calibration failed */ |
| memset(&dparam->dramc_datas, 0xa5, mrc_cache_size); |
| if (mrc_cache_stash_data(MRC_TRAINING_DATA, |
| DRAMC_PARAM_HEADER_VERSION, |
| &dparam->dramc_datas, mrc_cache_size)) |
| printk(BIOS_ERR, "DRAM-K: Failed to erase " |
| "calibration data\n"); |
| } else { |
| printk(BIOS_INFO, "DRAM-K: Fast calibration passed in %ld msecs\n", |
| stopwatch_duration_msecs(&sw)); |
| return; |
| } |
| } else { |
| printk(BIOS_WARNING, "DRAM-K: Invalid data in flash (size: %#zx, expected: %#zx)\n", |
| data_size, mrc_cache_size); |
| } |
| |
| /* Run full calibration */ |
| printk(BIOS_INFO, "DRAM-K: Running full calibration\n"); |
| mem_init_set_default_config(dparam, dram_info); |
| |
| stopwatch_init(&sw); |
| int err = dram_run_full_calibration(dparam); |
| if (err == 0) { |
| printk(BIOS_INFO, "DRAM-K: Full calibration passed in %ld msecs\n", |
| stopwatch_duration_msecs(&sw)); |
| |
| if (mrc_cache_stash_data(MRC_TRAINING_DATA, |
| DRAMC_PARAM_HEADER_VERSION, |
| &dparam->dramc_datas, mrc_cache_size) == 0) |
| printk(BIOS_DEBUG, "DRAM-K: Calibration params saved " |
| "to flash: version=%#x, size=%#zx\n", |
| DRAMC_PARAM_HEADER_VERSION, sizeof(*dparam)); |
| else |
| printk(BIOS_ERR, "DRAM-K: Failed to save calibration " |
| "data to flash\n"); |
| } else { |
| printk(BIOS_ERR, "DRAM-K: Full calibration failed in %ld msecs\n", |
| stopwatch_duration_msecs(&sw)); |
| } |
| } |
| |
| void mt_mem_init(struct dramc_param *dparam) |
| { |
| const struct sdram_info *sdram_param = get_sdram_config(); |
| |
| mt_mem_init_run(dparam, sdram_param); |
| } |
| |
| void mtk_dram_init(void) |
| { |
| /* dramc_param is too large to fit in stack. */ |
| static struct dramc_param dramc_parameter; |
| mt_mem_init(&dramc_parameter); |
| mtk_mmu_after_dram(); |
| } |