diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/skylake/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/intel/skylake/include/soc/ebda.h | 24 | ||||
| -rw-r--r-- | src/soc/intel/skylake/memmap.c | 21 |
3 files changed, 45 insertions, 1 deletions
diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig index b045486491..53a8b5157c 100644 --- a/src/soc/intel/skylake/Kconfig +++ b/src/soc/intel/skylake/Kconfig @@ -54,6 +54,7 @@ config CPU_SPECIFIC_OPTIONS select SOC_INTEL_COMMON_BLOCK select SOC_INTEL_COMMON_BLOCK_CPU select SOC_INTEL_COMMON_BLOCK_CPU_MPINIT + select SOC_INTEL_COMMON_BLOCK_EBDA select SOC_INTEL_COMMON_BLOCK_FAST_SPI select SOC_INTEL_COMMON_BLOCK_GSPI select SOC_INTEL_COMMON_BLOCK_ITSS diff --git a/src/soc/intel/skylake/include/soc/ebda.h b/src/soc/intel/skylake/include/soc/ebda.h new file mode 100644 index 0000000000..4cde5c0106 --- /dev/null +++ b/src/soc/intel/skylake/include/soc/ebda.h @@ -0,0 +1,24 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corporation. + * + * 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. + */ + +#ifndef SOC_EBDA_H +#define SOC_EBDA_H + +struct ebda_config { + uint32_t signature; /* 0x00 - EBDA signature */ + uint32_t tolum_base; /* 0x04 - coreboot memory start */ +}; + +#endif diff --git a/src/soc/intel/skylake/memmap.c b/src/soc/intel/skylake/memmap.c index 0ade6916f5..0d31ea8c06 100644 --- a/src/soc/intel/skylake/memmap.c +++ b/src/soc/intel/skylake/memmap.c @@ -14,12 +14,14 @@ * GNU General Public License for more details. */ +#include <arch/ebda.h> #include <arch/io.h> #include <cbmem.h> #include <chip.h> #include <console/console.h> #include <device/device.h> #include <device/pci.h> +#include <intelblocks/ebda.h> #include <intelblocks/systemagent.h> #include <soc/msr.h> #include <soc/pci_devs.h> @@ -274,6 +276,18 @@ static uintptr_t calculate_dram_base(void) return dram_base; } +/* Fill up memory layout information */ +void fill_soc_memmap_ebda(struct ebda_config *cfg) +{ + cfg->tolum_base = calculate_dram_base(); +} + +void cbmem_top_init(void) +{ + /* Fill up EBDA area */ + fill_ebda_area(); +} + /* * +-------------------------+ Top of RAM (aligned) * | System Management Mode | @@ -303,6 +317,9 @@ static uintptr_t calculate_dram_base(void) */ void *cbmem_top(void) { + struct ebda_config ebda_cfg; + struct ebda_config *cfg = &ebda_cfg; + /* * Check if Tseg has been initialized, we will use this as a flag * to check if the MRC is done, and only then continue to read the @@ -312,5 +329,7 @@ void *cbmem_top(void) if (sa_get_tseg_base() == 0) return NULL; - return (void *)calculate_dram_base(); + read_ebda_data(cfg, sizeof(*cfg)); + + return (void *)(uintptr_t)cfg->tolum_base; } |