diff options
Diffstat (limited to 'src/soc/intel/fsp_broadwell_de/romstage')
| -rw-r--r-- | src/soc/intel/fsp_broadwell_de/romstage/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/fsp_broadwell_de/romstage/memory.c | 61 | ||||
| -rw-r--r-- | src/soc/intel/fsp_broadwell_de/romstage/romstage.c | 4 |
3 files changed, 66 insertions, 0 deletions
diff --git a/src/soc/intel/fsp_broadwell_de/romstage/Makefile.inc b/src/soc/intel/fsp_broadwell_de/romstage/Makefile.inc index 5ef9a9251d..5c332018e0 100644 --- a/src/soc/intel/fsp_broadwell_de/romstage/Makefile.inc +++ b/src/soc/intel/fsp_broadwell_de/romstage/Makefile.inc @@ -1,3 +1,4 @@ romstage-y += romstage.c +romstage-y += memory.c $(obj)/soc/intel/fsp_broadwell_de/romstage/romstage.romstage.o : $(obj)/build.h diff --git a/src/soc/intel/fsp_broadwell_de/romstage/memory.c b/src/soc/intel/fsp_broadwell_de/romstage/memory.c new file mode 100644 index 0000000000..7574c5fb66 --- /dev/null +++ b/src/soc/intel/fsp_broadwell_de/romstage/memory.c @@ -0,0 +1,61 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2019 Facebook, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <stddef.h> +#include <device/pci_ops.h> +#include <device/dram/ddr4.h> +#include <soc/pci_devs.h> +#include <soc/memory.h> +#include <spd_bin.h> + +static uint32_t get_memory_dclk(void) +{ + uint32_t reg32 = + pci_mmio_read_config32(PCI_DEV(QPI_BUS, PCU1_DEV, PCU1_FUNC), REG_MC_BIOS_REQ); + return (reg32 & REG_MC_BIOS_REQ_FREQ_MSK) * REG_MC_MULTIPLIER; +} + +void save_dimm_info(void) +{ + int index = 0; + uint32_t dclk_mhz = 0; + + /* + * When talking to SPD chips through IMC slave offset of 0x50 is automagically added + * by hardware. Real-world slave numbers translate to: 0xa0, 0xa2, 0xa4, 0xa6. + */ + struct spd_block blk = {.addr_map = {SPD_SLAVE_ADDR(0, 0), SPD_SLAVE_ADDR(0, 1), + SPD_SLAVE_ADDR(1, 0), SPD_SLAVE_ADDR(1, 1)} }; + + get_spd_smbus(&blk); + dump_spd_info(&blk); + + dclk_mhz = get_memory_dclk(); + + /* + * The platform is limited to 2 channels and max 2 dimms per channel. + * It doesn't look like DDR3 is supported so we assume memory is all DDR4. + */ + + for (int channel = 0; channel < IMC_MAX_CHANNELS; channel++) { + for (int slot = 0; slot < CONFIG_DIMM_MAX / IMC_MAX_CHANNELS; slot++) { + dimm_attr dimm = {0}; + u8 *spd_data = blk.spd_array[index]; + if (spd_decode_ddr4(&dimm, spd_data) == SPD_STATUS_OK) + spd_add_smbios17_ddr4(channel, index, dclk_mhz, &dimm); + index++; + } + } +} diff --git a/src/soc/intel/fsp_broadwell_de/romstage/romstage.c b/src/soc/intel/fsp_broadwell_de/romstage/romstage.c index 085395e9a8..3b74a1cb69 100644 --- a/src/soc/intel/fsp_broadwell_de/romstage/romstage.c +++ b/src/soc/intel/fsp_broadwell_de/romstage/romstage.c @@ -29,6 +29,7 @@ #include <pc80/mc146818rtc.h> #include <soc/iomap.h> #include <soc/lpc.h> +#include <soc/memory.h> #include <soc/pci_devs.h> #include <soc/romstage.h> #include <soc/gpio.h> @@ -165,6 +166,9 @@ void romstage_main_continue(EFI_STATUS status, void *hob_list_ptr) die("Could not allocate cbmem for HOB pointer"); *(u32 *)cbmem_hob_ptr = (u32)hob_list_ptr; + if (!CONFIG(FSP_MEMORY_DOWN)) + save_dimm_info(); + /* Load the ramstage. */ post_code(0x4e); run_ramstage(); |