| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/mmio.h> |
| #include <stage_cache.h> |
| #include <mrc_cache.h> |
| #include <reset.h> |
| #include <console/console.h> |
| #include <soc/southbridge.h> |
| #include <amdblocks/s3_resume.h> |
| #include <amdblocks/acpi.h> |
| |
| /* Training data versioning is not supported or tracked. */ |
| #define DEFAULT_MRC_VERSION 0 |
| |
| static void __noreturn reboot_from_resume(const char *message) |
| { |
| printk(BIOS_ERR, "%s", message); |
| set_pm1cnt_s5(); |
| board_reset(); |
| } |
| |
| AGESA_STATUS OemInitResume(S3_DATA_BLOCK *dataBlock) |
| { |
| void *base; |
| size_t size; |
| int i; |
| uint32_t erased = 0xffffffff; |
| |
| base = mrc_cache_current_mmap_leak(MRC_TRAINING_DATA, |
| DEFAULT_MRC_VERSION, |
| &size); |
| if (!base || !size) |
| reboot_from_resume("Error: S3 NV data not found, rebooting.\n"); |
| |
| /* Read 16 bytes to infer if the NV has been erased from flash. */ |
| for (i = 0; i < 4; i++) |
| erased &= read32((uint32_t *)base + i); |
| if (erased == 0xffffffff) |
| reboot_from_resume("Error: S3 NV data invalid, rebooting.\n"); |
| |
| dataBlock->NvStorage = base; |
| dataBlock->NvStorageSize = size; |
| printk(BIOS_SPEW, "S3 NV data @%p, 0x%0zx bytes\n", |
| dataBlock->NvStorage, (size_t)dataBlock->NvStorageSize); |
| |
| return AGESA_SUCCESS; |
| } |
| |
| AGESA_STATUS OemS3LateRestore(S3_DATA_BLOCK *dataBlock) |
| { |
| void *base = NULL; |
| size_t size = 0; |
| |
| stage_cache_get_raw(STAGE_S3_DATA, &base, &size); |
| if (!base || !size) { |
| printk(BIOS_ERR, "Error: S3 volatile data not found\n"); |
| return AGESA_FATAL; |
| } |
| |
| dataBlock->VolatileStorage = base; |
| dataBlock->VolatileStorageSize = size; |
| printk(BIOS_SPEW, "S3 volatile data @%p, 0x%0zx bytes\n", |
| dataBlock->VolatileStorage, (size_t)dataBlock->VolatileStorageSize); |
| |
| return AGESA_SUCCESS; |
| } |
| |
| AGESA_STATUS OemS3Save(S3_DATA_BLOCK *dataBlock) |
| { |
| if (mrc_cache_stash_data(MRC_TRAINING_DATA, DEFAULT_MRC_VERSION, |
| dataBlock->NvStorage, dataBlock->NvStorageSize) < 0) { |
| printk(BIOS_ERR, "Failed to stash MRC data\n"); |
| return AGESA_CRITICAL; |
| } |
| |
| stage_cache_add_raw(STAGE_S3_DATA, dataBlock->VolatileStorage, |
| dataBlock->VolatileStorageSize); |
| |
| return AGESA_SUCCESS; |
| } |