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-rw-r--r--src/soc/intel/xeon_sp/bootblock.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/src/soc/intel/xeon_sp/bootblock.c b/src/soc/intel/xeon_sp/bootblock.c
index 5adda44d93..baf5ab5ad9 100644
--- a/src/soc/intel/xeon_sp/bootblock.c
+++ b/src/soc/intel/xeon_sp/bootblock.c
@@ -33,11 +33,20 @@ const FSPT_UPD temp_ram_init_params = {
.UpdTerminator = 0x55AA,
};
+static uint64_t assembly_timestamp;
+static uint64_t bootblock_timestamp;
+
asmlinkage void bootblock_c_entry(uint64_t base_timestamp)
{
+ /*
+ * FSP-T does not respect its own API and trashes registers
+ * coreboot uses to store its initial timestamp.
+ */
+ assembly_timestamp = base_timestamp;
+ bootblock_timestamp = timestamp_get();
fast_spi_cache_bios_region();
- bootblock_main_with_basetime(base_timestamp);
+ bootblock_main_with_basetime(MIN(assembly_timestamp, bootblock_timestamp));
}
void bootblock_soc_early_init(void)
@@ -55,6 +64,10 @@ void bootblock_soc_init(void)
{
if (CONFIG(BOOTBLOCK_CONSOLE))
printk(BIOS_DEBUG, "FSP TempRamInit successful...\n");
+
+ if (assembly_timestamp > bootblock_timestamp)
+ printk(BIOS_WARNING, "Invalid initial timestamp detected\n");
+
if (CONFIG(FSP_CAR))
report_fspt_output();
bootblock_pch_init();