diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/tigerlake/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/tigerlake/include/soc/meminit_tgl.h | 70 | ||||
| -rw-r--r-- | src/soc/intel/tigerlake/meminit_tgl.c | 164 |
3 files changed, 235 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/Makefile.inc b/src/soc/intel/tigerlake/Makefile.inc index 532861dbe1..56119f50db 100644 --- a/src/soc/intel/tigerlake/Makefile.inc +++ b/src/soc/intel/tigerlake/Makefile.inc @@ -25,6 +25,7 @@ bootblock-y += p2sb.c romstage-y += espi.c romstage-y += gpio.c +romstage-$(CONFIG_SOC_INTEL_TIGERLAKE) += meminit_tgl.c romstage-y += reset.c ramstage-y += acpi.c diff --git a/src/soc/intel/tigerlake/include/soc/meminit_tgl.h b/src/soc/intel/tigerlake/include/soc/meminit_tgl.h new file mode 100644 index 0000000000..dd0541809e --- /dev/null +++ b/src/soc/intel/tigerlake/include/soc/meminit_tgl.h @@ -0,0 +1,70 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2020 The coreboot project Authors. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef _SOC_MEMINIT_TGL_H_ +#define _SOC_MEMINIT_TGL_H_ + +#include <stddef.h> +#include <stdint.h> +#include <fsp/soc_binding.h> + +#define BYTES_PER_CHANNEL 2 +#define BITS_PER_BYTE 8 +#define DQS_PER_CHANNEL 2 +#define NUM_CHANNELS 8 + +struct spd_by_pointer { + size_t spd_data_len; + uintptr_t spd_data_ptr; +}; + +enum mem_info_read_type { + NOT_EXISTING, /* No memory in this channel */ + READ_SPD_CBFS, /* Find spd file in CBFS. */ + READ_SPD_MEMPTR /* Find spd data from pointer. */ +}; + +struct spd_info { + enum mem_info_read_type read_type; + union spd_data_by { + /* To identify spd file when read_type is READ_SPD_CBFS. */ + int spd_index; + + /* To find spd data when read_type is READ_SPD_MEMPTR. */ + struct spd_by_pointer spd_data_ptr_info; + } spd_spec; +}; + +/* Board-specific memory configuration information */ +struct mb_lpddr4x_cfg { + /* DQ mapping */ + uint8_t dq_map[NUM_CHANNELS][BYTES_PER_CHANNEL * BITS_PER_BYTE]; + + /* + * DQS CPU<>DRAM map. Each array entry represents a + * mapping of a dq bit on the CPU to the bit it's connected to on + * the memory part. The array index represents the dqs bit number + * on the memory part, and the values in the array represent which + * pin on the CPU that DRAM pin connects to. + */ + uint8_t dqs_map[NUM_CHANNELS][DQS_PER_CHANNEL]; + + /* + * Early Command Training Enable/Disable Control + * 1 = enable, 0 = disable + */ + uint8_t ect; +}; + +/* Initialize default memory configurations for dimm0-only lpddr4x */ +void meminit_lpddr4x_dimm0(FSP_M_CONFIG *mem_cfg, + const struct mb_lpddr4x_cfg *board_cfg, + const struct spd_info *spd, + bool half_populated); + +#endif /* _SOC_MEMINIT_TGL_H_ */ diff --git a/src/soc/intel/tigerlake/meminit_tgl.c b/src/soc/intel/tigerlake/meminit_tgl.c new file mode 100644 index 0000000000..922f66a543 --- /dev/null +++ b/src/soc/intel/tigerlake/meminit_tgl.c @@ -0,0 +1,164 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2020 The coreboot project Authors. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include <assert.h> +#include <console/console.h> +#include <fsp/util.h> +#include <soc/meminit_tgl.h> +#include <spd_bin.h> +#include <string.h> + +enum dimm_enable_options { + ENABLE_BOTH_DIMMS = 0, + DISABLE_DIMM0 = 1, + DISABLE_DIMM1 = 2, + DISABLE_BOTH_DIMMS = 3 +}; + +#define MEM_INIT_CH_DQ_DQS_MAP(_mem_cfg, _b_cfg, _ch) \ + do { \ + memcpy(&_mem_cfg->DqMapCpu2DramCh ## _ch, \ + &_b_cfg->dq_map[_ch], \ + sizeof(_b_cfg->dq_map[_ch])); \ + memcpy(&_mem_cfg->DqsMapCpu2DramCh ## _ch, \ + &_b_cfg->dqs_map[_ch], \ + sizeof(_b_cfg->dqs_map[_ch])); \ + } while (0) + + +static void spd_read_from_cbfs(const struct spd_info *spd, + uintptr_t *spd_data_ptr, size_t *spd_data_len) +{ + struct region_device spd_rdev; + size_t spd_index = spd->spd_spec.spd_index; + + printk(BIOS_DEBUG, "SPD INDEX = %lu\n", spd_index); + if (get_spd_cbfs_rdev(&spd_rdev, spd_index) < 0) + die("spd.bin not found or incorrect index\n"); + + *spd_data_len = region_device_sz(&spd_rdev); + + /* Memory leak is ok since we have memory mapped boot media */ + assert(CONFIG(BOOT_DEVICE_MEMORY_MAPPED)); + + *spd_data_ptr = (uintptr_t)rdev_mmap_full(&spd_rdev); +} + +static void get_spd_data(const struct spd_info *spd, + uintptr_t *spd_data_ptr, size_t *spd_data_len) +{ + if (spd->read_type == READ_SPD_MEMPTR) { + *spd_data_ptr = spd->spd_spec.spd_data_ptr_info.spd_data_ptr; + *spd_data_len = spd->spd_spec.spd_data_ptr_info.spd_data_len; + return; + } + + if (spd->read_type == READ_SPD_CBFS) { + spd_read_from_cbfs(spd, spd_data_ptr, spd_data_len); + return; + } + + die("no valid way to read SPD info"); +} + +static void meminit_dq_dqs_map(FSP_M_CONFIG *mem_cfg, + const struct mb_lpddr4x_cfg *board_cfg, + bool half_populated) +{ + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 0); + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 1); + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 2); + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 3); + + if (half_populated) + return; + + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 4); + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 5); + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 6); + MEM_INIT_CH_DQ_DQS_MAP(mem_cfg, board_cfg, 7); +} + +static void meminit_channels_dimm0(FSP_M_CONFIG *mem_cfg, + const struct mb_lpddr4x_cfg *board_cfg, + uintptr_t spd_data_ptr, + bool half_populated) +{ + uint8_t dimm_cfg = DISABLE_DIMM1; /* Use only DIMM0 */ + + /* Channel 0 */ + mem_cfg->Reserved9[0] = dimm_cfg; + mem_cfg->MemorySpdPtr00 = spd_data_ptr; + mem_cfg->MemorySpdPtr01 = 0; + + /* Channel 1 */ + mem_cfg->Reserved9[1] = dimm_cfg; + mem_cfg->MemorySpdPtr02 = spd_data_ptr; + mem_cfg->MemorySpdPtr03 = 0; + + /* Channel 2 */ + mem_cfg->Reserved9[2] = dimm_cfg; + mem_cfg->MemorySpdPtr04 = spd_data_ptr; + mem_cfg->MemorySpdPtr05 = 0; + + /* Channel 3 */ + mem_cfg->Reserved9[3] = dimm_cfg; + mem_cfg->MemorySpdPtr06 = spd_data_ptr; + mem_cfg->MemorySpdPtr07 = 0; + + if (half_populated) { + printk(BIOS_INFO, "%s: DRAM half-populated\n", __func__); + dimm_cfg = DISABLE_BOTH_DIMMS; + spd_data_ptr = 0; + } + + /* Channel 4 */ + mem_cfg->Reserved9[4] = dimm_cfg; + mem_cfg->MemorySpdPtr08 = spd_data_ptr; + mem_cfg->MemorySpdPtr09 = 0; + + /* Channel 5 */ + mem_cfg->Reserved9[5] = dimm_cfg; + mem_cfg->MemorySpdPtr10 = spd_data_ptr; + mem_cfg->MemorySpdPtr11 = 0; + + /* Channel 6 */ + mem_cfg->Reserved9[6] = dimm_cfg; + mem_cfg->MemorySpdPtr12 = spd_data_ptr; + mem_cfg->MemorySpdPtr13 = 0; + + /* Channel 7 */ + mem_cfg->Reserved9[7] = dimm_cfg; + mem_cfg->MemorySpdPtr14 = spd_data_ptr; + mem_cfg->MemorySpdPtr15 = 0; + + meminit_dq_dqs_map(mem_cfg, board_cfg, half_populated); +} + +/* Initialize onboard memory configurations for lpddr4x */ +void meminit_lpddr4x_dimm0(FSP_M_CONFIG *mem_cfg, + const struct mb_lpddr4x_cfg *board_cfg, + const struct spd_info *spd, + bool half_populated) + +{ + size_t spd_data_len; + uintptr_t spd_data_ptr; + + get_spd_data(spd, &spd_data_ptr, &spd_data_len); + print_spd_info((unsigned char *)spd_data_ptr); + + mem_cfg->MemorySpdDataLen = spd_data_len; + meminit_channels_dimm0(mem_cfg, board_cfg, spd_data_ptr, + half_populated); + + /* LPDDR4 does not allow interleaved memory */ + mem_cfg->DqPinsInterleaved = 0; + mem_cfg->ECT = board_cfg->ect; + mem_cfg->MrcSafeConfig = 0x1; +} |