| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <device/mmio.h> |
| #include <cf9_reset.h> |
| #include <console/console.h> |
| #include <fsp/util.h> |
| #include <string.h> |
| #include <types.h> |
| |
| static bool looks_like_fsp_header(const uint8_t *raw_hdr) |
| { |
| if (memcmp(raw_hdr, FSP_HDR_SIGNATURE, 4)) { |
| printk(BIOS_ALERT, "Did not find a valid FSP signature\n"); |
| return false; |
| } |
| |
| if (read32(raw_hdr + 4) != FSP_HDR_LEN) { |
| printk(BIOS_ALERT, "FSP header has invalid length\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| enum cb_err fsp_identify(struct fsp_header *hdr, const void *fsp_blob) |
| { |
| const uint8_t *raw_hdr = fsp_blob; |
| |
| if (!looks_like_fsp_header(raw_hdr)) |
| return CB_ERR; |
| |
| hdr->spec_version = read8(raw_hdr + 10); |
| hdr->revision = read8(raw_hdr + 11); |
| hdr->fsp_revision = read32(raw_hdr + 12); |
| memcpy(hdr->image_id, raw_hdr + 16, ARRAY_SIZE(hdr->image_id)); |
| hdr->image_id[ARRAY_SIZE(hdr->image_id) - 1] = '\0'; |
| hdr->image_size = read32(raw_hdr + 24); |
| hdr->image_base = read32(raw_hdr + 28); |
| hdr->image_attribute = read16(raw_hdr + 32); |
| hdr->component_attribute = read16(raw_hdr + 34); |
| hdr->cfg_region_offset = read32(raw_hdr + 36); |
| hdr->cfg_region_size = read32(raw_hdr + 40); |
| hdr->temp_ram_init_entry = read32(raw_hdr + 48); |
| hdr->temp_ram_exit_entry = read32(raw_hdr + 64); |
| hdr->notify_phase_entry_offset = read32(raw_hdr + 56); |
| hdr->memory_init_entry_offset = read32(raw_hdr + 60); |
| hdr->silicon_init_entry_offset = read32(raw_hdr + 68); |
| |
| return CB_SUCCESS; |
| } |
| |
| enum cb_err fsp_validate_component(struct fsp_header *hdr, |
| const struct region_device *rdev) |
| { |
| void *membase; |
| |
| /* Map just enough of the file to be able to parse the header. */ |
| membase = rdev_mmap(rdev, FSP_HDR_OFFSET, FSP_HDR_LEN); |
| |
| if (membase == NULL) { |
| printk(BIOS_CRIT, "Could not mmap() FSP header.\n"); |
| return CB_ERR; |
| } |
| |
| if (fsp_identify(hdr, membase) != CB_SUCCESS) { |
| rdev_munmap(rdev, membase); |
| printk(BIOS_CRIT, "No valid FSP header\n"); |
| return CB_ERR; |
| } |
| |
| rdev_munmap(rdev, membase); |
| |
| if (CONFIG(DISPLAY_FSP_HEADER)) |
| fsp_print_header_info(hdr); |
| |
| /* Check if size specified in the header matches the cbfs file size */ |
| if (region_device_sz(rdev) < hdr->image_size) { |
| printk(BIOS_CRIT, "Component size bigger than cbfs file.\n"); |
| return CB_ERR; |
| } |
| |
| return CB_SUCCESS; |
| } |
| |
| static bool fsp_reset_requested(uint32_t status) |
| { |
| return (status >= FSP_STATUS_RESET_REQUIRED_COLD && |
| status <= FSP_STATUS_RESET_REQUIRED_8); |
| } |
| |
| void fsp_handle_reset(uint32_t status) |
| { |
| if (!fsp_reset_requested(status)) |
| return; |
| |
| printk(BIOS_SPEW, "FSP: handling reset type %x\n", status); |
| |
| switch (status) { |
| case FSP_STATUS_RESET_REQUIRED_COLD: |
| full_reset(); |
| break; |
| case FSP_STATUS_RESET_REQUIRED_WARM: |
| system_reset(); |
| break; |
| case FSP_STATUS_RESET_REQUIRED_3: |
| case FSP_STATUS_RESET_REQUIRED_4: |
| case FSP_STATUS_RESET_REQUIRED_5: |
| case FSP_STATUS_RESET_REQUIRED_6: |
| case FSP_STATUS_RESET_REQUIRED_7: |
| case FSP_STATUS_RESET_REQUIRED_8: |
| chipset_handle_reset(status); |
| break; |
| default: |
| break; |
| } |
| } |