| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <console/usb.h> |
| #include <string.h> |
| #include <cbmem.h> |
| #include <cbfs.h> |
| #include <cf9_reset.h> |
| #include <ip_checksum.h> |
| #include <memory_info.h> |
| #include <mrc_cache.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| #include <device/dram/ddr3.h> |
| #include <smbios.h> |
| #include <spd.h> |
| #include <security/vboot/vboot_common.h> |
| #include <commonlib/region.h> |
| #include "raminit.h" |
| #include "pei_data.h" |
| #include "haswell.h" |
| |
| #define MRC_CACHE_VERSION 1 |
| |
| void save_mrc_data(struct pei_data *pei_data) |
| { |
| /* Save the MRC S3 restore data to cbmem */ |
| mrc_cache_stash_data(MRC_TRAINING_DATA, MRC_CACHE_VERSION, pei_data->mrc_output, |
| pei_data->mrc_output_len); |
| } |
| |
| static void prepare_mrc_cache(struct pei_data *pei_data) |
| { |
| size_t mrc_size; |
| |
| /* Preset just in case there is an error */ |
| pei_data->mrc_input = NULL; |
| pei_data->mrc_input_len = 0; |
| |
| pei_data->mrc_input = |
| mrc_cache_current_mmap_leak(MRC_TRAINING_DATA, |
| MRC_CACHE_VERSION, |
| &mrc_size); |
| if (!pei_data->mrc_input) |
| /* Error message printed in find_current_mrc_cache */ |
| return; |
| |
| pei_data->mrc_input_len = mrc_size; |
| |
| printk(BIOS_DEBUG, "%s: at %p, size %zx\n", __func__, |
| pei_data->mrc_input, mrc_size); |
| } |
| |
| static const char *ecc_decoder[] = { |
| "inactive", |
| "active on IO", |
| "disabled on IO", |
| "active", |
| }; |
| |
| /* Print out the memory controller configuration, as per the values in its registers. */ |
| static void report_memory_config(void) |
| { |
| u32 addr_decoder_common, addr_decode_chan[2]; |
| int i; |
| |
| addr_decoder_common = MCHBAR32(MAD_CHNL); |
| addr_decode_chan[0] = MCHBAR32(MAD_DIMM_CH0); |
| addr_decode_chan[1] = MCHBAR32(MAD_DIMM_CH1); |
| |
| printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n", |
| (MCHBAR32(MC_BIOS_DATA) * 13333 * 2 + 50) / 100); |
| |
| printk(BIOS_DEBUG, "memcfg channel assignment: A: %d, B % d, C % d\n", |
| (addr_decoder_common >> 0) & 3, |
| (addr_decoder_common >> 2) & 3, |
| (addr_decoder_common >> 4) & 3); |
| |
| for (i = 0; i < ARRAY_SIZE(addr_decode_chan); i++) { |
| u32 ch_conf = addr_decode_chan[i]; |
| |
| printk(BIOS_DEBUG, "memcfg channel[%d] config (%8.8x):\n", i, ch_conf); |
| printk(BIOS_DEBUG, " ECC %s\n", ecc_decoder[(ch_conf >> 24) & 3]); |
| printk(BIOS_DEBUG, " enhanced interleave mode %s\n", |
| ((ch_conf >> 22) & 1) ? "on" : "off"); |
| |
| printk(BIOS_DEBUG, " rank interleave %s\n", |
| ((ch_conf >> 21) & 1) ? "on" : "off"); |
| |
| printk(BIOS_DEBUG, " DIMMA %d MB width %s %s rank%s\n", |
| ((ch_conf >> 0) & 0xff) * 256, |
| ((ch_conf >> 19) & 1) ? "x16" : "x8 or x32", |
| ((ch_conf >> 17) & 1) ? "dual" : "single", |
| ((ch_conf >> 16) & 1) ? "" : ", selected"); |
| |
| printk(BIOS_DEBUG, " DIMMB %d MB width %s %s rank%s\n", |
| ((ch_conf >> 8) & 0xff) * 256, |
| ((ch_conf >> 20) & 1) ? "x16" : "x8 or x32", |
| ((ch_conf >> 18) & 1) ? "dual" : "single", |
| ((ch_conf >> 16) & 1) ? ", selected" : ""); |
| } |
| } |
| |
| /** |
| * Find PEI executable in coreboot filesystem and execute it. |
| * |
| * @param pei_data: configuration data for UEFI PEI reference code |
| */ |
| void sdram_initialize(struct pei_data *pei_data) |
| { |
| unsigned long entry; |
| uint32_t type = CBFS_TYPE_MRC; |
| struct cbfsf f; |
| |
| printk(BIOS_DEBUG, "Starting UEFI PEI System Agent\n"); |
| |
| /* Do not pass MRC data in for recovery mode boot, always pass it in for S3 resume */ |
| if (!(CONFIG(HASWELL_VBOOT_IN_BOOTBLOCK) && vboot_recovery_mode_enabled()) |
| || pei_data->boot_mode == 2) |
| prepare_mrc_cache(pei_data); |
| |
| /* If MRC data is not found, we cannot continue S3 resume */ |
| if (pei_data->boot_mode == 2 && !pei_data->mrc_input) { |
| post_code(POST_RESUME_FAILURE); |
| printk(BIOS_DEBUG, "Giving up in %s: No MRC data\n", __func__); |
| system_reset(); |
| } |
| |
| /* Pass console handler in pei_data */ |
| pei_data->tx_byte = do_putchar; |
| |
| /* |
| * Locate and call UEFI System Agent binary. The binary needs to be at a fixed offset |
| * in the flash and can therefore only reside in the COREBOOT fmap region. |
| */ |
| if (cbfs_locate_file_in_region(&f, "COREBOOT", "mrc.bin", &type) < 0) |
| die("mrc.bin not found!"); |
| |
| /* We don't care about leaking the mapping */ |
| entry = (unsigned long)rdev_mmap_full(&f.data); |
| if (entry) { |
| int rv; |
| asm volatile ("call *%%ecx\n\t" |
| :"=a" (rv) : "c" (entry), "a" (pei_data)); |
| |
| /* The mrc.bin reconfigures USB, so usbdebug needs to be reinitialized */ |
| if (CONFIG(USBDEBUG_IN_PRE_RAM)) |
| usbdebug_hw_init(true); |
| |
| if (rv) { |
| switch (rv) { |
| case -1: |
| printk(BIOS_ERR, "PEI version mismatch.\n"); |
| break; |
| case -2: |
| printk(BIOS_ERR, "Invalid memory frequency.\n"); |
| break; |
| default: |
| printk(BIOS_ERR, "MRC returned %x.\n", rv); |
| } |
| die_with_post_code(POST_INVALID_VENDOR_BINARY, |
| "Nonzero MRC return value.\n"); |
| } |
| } else { |
| die("UEFI PEI System Agent not found.\n"); |
| } |
| |
| /* For reference, print the System Agent version after executing the UEFI PEI stage */ |
| u32 version = MCHBAR32(MRC_REVISION); |
| printk(BIOS_DEBUG, "System Agent Version %d.%d.%d Build %d\n", |
| (version >> 24) & 0xff, (version >> 16) & 0xff, |
| (version >> 8) & 0xff, (version >> 0) & 0xff); |
| |
| report_memory_config(); |
| } |
| |
| static bool nb_supports_ecc(const uint32_t capid0_a) |
| { |
| return !(capid0_a & CAPID_ECCDIS); |
| } |
| |
| static uint16_t nb_slots_per_channel(const uint32_t capid0_a) |
| { |
| return !(capid0_a & CAPID_DDPCD) + 1; |
| } |
| |
| static uint16_t nb_number_of_channels(const uint32_t capid0_a) |
| { |
| return !(capid0_a & CAPID_PDCD) + 1; |
| } |
| |
| static uint32_t nb_max_chan_capacity_mib(const uint32_t capid0_a) |
| { |
| uint32_t ddrsz; |
| |
| /* Values from documentation, which assume two DIMMs per channel */ |
| switch (CAPID_DDRSZ(capid0_a)) { |
| case 1: |
| ddrsz = 8192; |
| break; |
| case 2: |
| ddrsz = 2048; |
| break; |
| case 3: |
| ddrsz = 512; |
| break; |
| default: |
| ddrsz = 16384; |
| break; |
| } |
| |
| /* Account for the maximum number of DIMMs per channel */ |
| return (ddrsz / 2) * nb_slots_per_channel(capid0_a); |
| } |
| |
| void setup_sdram_meminfo(struct pei_data *pei_data) |
| { |
| u32 addr_decode_ch[2]; |
| struct memory_info *mem_info; |
| struct dimm_info *dimm; |
| int ddr_frequency, dimm_size, ch, d_num; |
| int dimm_cnt = 0; |
| |
| mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(struct memory_info)); |
| if (!mem_info) |
| die("Failed to add memory info to CBMEM.\n"); |
| |
| memset(mem_info, 0, sizeof(struct memory_info)); |
| |
| /* FIXME: Do we need to read MCHBAR32(MAD_CHNL) ? (Answer: Nope) */ |
| MCHBAR32(MAD_CHNL); |
| addr_decode_ch[0] = MCHBAR32(MAD_DIMM_CH0); |
| addr_decode_ch[1] = MCHBAR32(MAD_DIMM_CH1); |
| |
| ddr_frequency = (MCHBAR32(MC_BIOS_DATA) * 13333 * 2 + 50) / 100; |
| |
| for (ch = 0; ch < ARRAY_SIZE(addr_decode_ch); ch++) { |
| u32 ch_conf = addr_decode_ch[ch]; |
| /* DIMMs A/B */ |
| for (d_num = 0; d_num < 2; d_num++) { |
| dimm_size = ((ch_conf >> (d_num * 8)) & 0xff) * 256; |
| if (dimm_size) { |
| dimm = &mem_info->dimm[dimm_cnt]; |
| dimm->dimm_size = dimm_size; |
| dimm->ddr_type = MEMORY_TYPE_DDR3; |
| dimm->ddr_frequency = ddr_frequency; |
| dimm->rank_per_dimm = 1 + ((ch_conf >> (17 + d_num)) & 1); |
| dimm->channel_num = ch; |
| dimm->dimm_num = d_num; |
| dimm->bank_locator = ch * 2; |
| memcpy(dimm->serial, |
| &pei_data->spd_data[dimm_cnt][SPD_DIMM_SERIAL_NUM], |
| SPD_DIMM_SERIAL_LEN); |
| memcpy(dimm->module_part_number, |
| &pei_data->spd_data[dimm_cnt][SPD_DIMM_PART_NUM], |
| SPD_DIMM_PART_LEN); |
| dimm->mod_id = |
| (pei_data->spd_data[dimm_cnt][SPD_DIMM_MOD_ID2] << 8) | |
| (pei_data->spd_data[dimm_cnt][SPD_DIMM_MOD_ID1] & 0xff); |
| dimm->mod_type = SPD_SODIMM; |
| dimm->bus_width = MEMORY_BUS_WIDTH_64; |
| dimm_cnt++; |
| } |
| } |
| } |
| mem_info->dimm_cnt = dimm_cnt; |
| |
| const uint32_t capid0_a = pci_read_config32(HOST_BRIDGE, CAPID0_A); |
| |
| const uint16_t channels = nb_number_of_channels(capid0_a); |
| |
| mem_info->ecc_capable = nb_supports_ecc(capid0_a); |
| mem_info->max_capacity_mib = channels * nb_max_chan_capacity_mib(capid0_a); |
| mem_info->number_of_devices = channels * nb_slots_per_channel(capid0_a); |
| } |