| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/reset.h> |
| #include <bl_uapp/bl_syscall_public.h> |
| #include <bootblock_common.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> |
| |
| static int transfer_buffer_valid(const struct transfer_info_struct *ptr) |
| { |
| if (ptr->magic_val == TRANSFER_MAGIC_VAL) |
| 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, "ERROR: 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 boot_with_psp_timestamp(uint64_t base_timestamp) |
| { |
| const struct transfer_info_struct *info = (const struct transfer_info_struct *) |
| (void *)(uintptr_t)_transfer_buffer; |
| |
| if (!transfer_buffer_valid(info) || info->timestamp == 0) |
| return; |
| |
| /* |
| * info->timestamp is PSP's timestamp (in microseconds) |
| * when x86 processor is released. |
| */ |
| uint64_t psp_last_ts = info->timestamp; |
| |
| int i; |
| struct timestamp_table *psp_ts_table = |
| (struct timestamp_table *)(void *) |
| ((uintptr_t)_transfer_buffer + info->timestamp_offset); |
| /* new base_timestamp will be offset for all PSP timestamps. */ |
| base_timestamp -= psp_last_ts; |
| |
| for (i = 0; i < psp_ts_table->num_entries; i++) { |
| struct timestamp_entry *tse = &psp_ts_table->entries[i]; |
| /* |
| * We ignore the time between x86 processor release and bootblock. |
| * Since timestamp_add subtracts base_time, we first add old base_time |
| * to make it absolute then add base_timestamp again since |
| * it'll be a new base_time. |
| * |
| * We don't need to convert unit since both PSP and coreboot |
| * will use 1us granularity. |
| * |
| */ |
| tse->entry_stamp += psp_ts_table->base_time + base_timestamp; |
| } |
| |
| bootblock_main_with_timestamp(base_timestamp, psp_ts_table->entries, |
| psp_ts_table->num_entries); |
| } |