diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2023-07-13 14:02:42 +0200 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-09-28 16:28:59 +0000 |
| commit | e4eba133cc73761fb7ca4bb5de8b8a01633b2be1 (patch) | |
| tree | 6e738e907414195781d8840f54ca3b81ed9941fe /src/soc/amd | |
| parent | 8f1c70706056723f2be33ef15b1bc06092f1160f (diff) | |
soc/amd/genoa: Deal with memory map for 32M or larger flash
Only the lower half of the flash gets memory mapped below 4G in the
current setup.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Signed-off-by: Varshit Pandya <pandyavarshit@gmail.com>
Change-Id: Iffe5c17a50f3254411a4847c7e635ce0fd282fde
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76499
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/genoa/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/amd/genoa/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/amd/genoa/mmap_boot.c | 31 |
3 files changed, 34 insertions, 0 deletions
diff --git a/src/soc/amd/genoa/Kconfig b/src/soc/amd/genoa/Kconfig index 705805edc8..7ef5707bba 100644 --- a/src/soc/amd/genoa/Kconfig +++ b/src/soc/amd/genoa/Kconfig @@ -15,6 +15,7 @@ config SOC_SPECIFIC_OPTIONS select SOC_AMD_COMMON_BLOCK_NONCAR select SOC_AMD_COMMON_BLOCK_PCI_MMCONF select UNKNOWN_TSC_RATE + select X86_CUSTOM_BOOTMEDIA config USE_EXP_X86_64_SUPPORT default y diff --git a/src/soc/amd/genoa/Makefile.inc b/src/soc/amd/genoa/Makefile.inc index de996d670c..164c5e91de 100644 --- a/src/soc/amd/genoa/Makefile.inc +++ b/src/soc/amd/genoa/Makefile.inc @@ -1,6 +1,8 @@ ## SPDX-License-Identifier: GPL-2.0-only ifeq ($(CONFIG_SOC_AMD_GENOA),y) +all-y += mmap_boot.c + bootblock-y += early_fch.c romstage-y += romstage.c diff --git a/src/soc/amd/genoa/mmap_boot.c b/src/soc/amd/genoa/mmap_boot.c new file mode 100644 index 0000000000..d29af41636 --- /dev/null +++ b/src/soc/amd/genoa/mmap_boot.c @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <boot_device.h> +#include <endian.h> +#include <spi_flash.h> + +#if CONFIG_ROM_SIZE >= (16 * MiB) +#define ROM_SIZE (16 * MiB) +#else +#define ROM_SIZE CONFIG_ROM_SIZE +#endif + +/* The ROM is memory mapped just below 4GiB. Form a pointer for the base. */ +#define rom_base ((void *)(uintptr_t)(0x100000000ULL-ROM_SIZE)) + +static const struct mem_region_device boot_dev = + MEM_REGION_DEV_RO_INIT(rom_base, ROM_SIZE); + +const struct region_device *boot_device_ro(void) +{ + return &boot_dev.rdev; +} + +uint32_t spi_flash_get_mmap_windows(struct flash_mmap_window *table) +{ + table->flash_base = 0; + table->host_base = (uint32_t)(uintptr_t)rom_base; + table->size = ROM_SIZE; + + return 1; +} |