| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/reset.h> |
| #include <console/cbmem_console.h> |
| #include <console/console.h> |
| #include <pc80/mc146818rtc.h> |
| #include <security/vboot/vbnv.h> |
| #include <security/vboot/symbols.h> |
| #include <soc/psp_transfer.h> |
| #include <timestamp.h> |
| #include <2struct.h> |
| |
| DECLARE_REGION(cbmemc_transfer) |
| |
| int transfer_buffer_valid(const struct transfer_info_struct *ptr) |
| { |
| if (ptr->magic_val == TRANSFER_MAGIC_VAL && ptr->struct_bytes == sizeof(*ptr)) |
| return 1; |
| else |
| return 0; |
| } |
| |
| void verify_psp_transfer_buf(void) |
| { |
| if (*(uint32_t *)_vboot2_work == VB2_SHARED_DATA_MAGIC) { |
| cmos_write(0x00, CMOS_RECOVERY_BYTE); |
| return; |
| } |
| |
| /* |
| * If CMOS is valid and the system has already been rebooted once, but |
| * still returns here, instead of rebooting to verstage again, assume |
| * that the system is in a reboot loop and halt. |
| */ |
| if ((!vbnv_cmos_failed()) && cmos_read(CMOS_RECOVERY_BYTE) == |
| CMOS_RECOVERY_MAGIC_VAL) |
| die("Error: Reboot into recovery was unsuccessful. Halting."); |
| |
| printk(BIOS_ERR, "VBOOT workbuf not valid.\n"); |
| printk(BIOS_DEBUG, "Signature: %#08x\n", *(uint32_t *)_vboot2_work); |
| cmos_init(0); |
| cmos_write(CMOS_RECOVERY_MAGIC_VAL, CMOS_RECOVERY_BYTE); |
| warm_reset(); |
| } |
| |
| void show_psp_transfer_info(void) |
| { |
| struct transfer_info_struct *info = (struct transfer_info_struct *) |
| (void *)(uintptr_t)_transfer_buffer; |
| |
| if (transfer_buffer_valid(info)) { |
| if ((info->psp_info & PSP_INFO_VALID) == 0) { |
| printk(BIOS_INFO, "No PSP info found in transfer buffer.\n"); |
| return; |
| } |
| |
| printk(BIOS_INFO, "PSP boot mode: %s\n", |
| info->psp_info & PSP_INFO_PRODUCTION_MODE ? |
| "Production" : "Development"); |
| printk(BIOS_INFO, "Silicon level: %s\n", |
| info->psp_info & PSP_INFO_PRODUCTION_SILICON ? |
| "Production" : "Pre-Production"); |
| } |
| } |
| |
| void replay_transfer_buffer_cbmemc(void) |
| { |
| const struct transfer_info_struct *info = (const struct transfer_info_struct *) |
| (void *)(uintptr_t)_transfer_buffer; |
| |
| void *cbmemc; |
| size_t cbmemc_size; |
| |
| if (!transfer_buffer_valid(info)) |
| return; |
| |
| if (info->console_offset < sizeof(*info)) |
| return; |
| |
| if (info->timestamp_offset <= info->console_offset) |
| return; |
| |
| cbmemc_size = info->timestamp_offset - info->console_offset; |
| |
| if (info->console_offset + cbmemc_size > info->buffer_size) |
| return; |
| |
| cbmemc = (void *)((uintptr_t)info + info->console_offset); |
| |
| /* Verify the cbmemc transfer buffer is where we expect it to be. */ |
| if ((void *)_cbmemc_transfer != (void *)cbmemc) |
| return; |
| |
| if (REGION_SIZE(cbmemc_transfer) != cbmemc_size) |
| return; |
| |
| /* We need to manually initialize cbmemc so we can fill the new buffer. cbmemc_init() |
| * will also be called later in console_hw_init(), but it will be a no-op. */ |
| cbmemc_init(); |
| cbmemc_copy_in(cbmemc, cbmemc_size); |
| } |