lib/bootblock: Add simplified entry with basetime

This allows for minor optimization as num_timestamps becomes
a constant zero for a function with local scope. The loop
with calls to timestamp_add() gets removed from bootblock.

Change-Id: Id230075c0e76fe377b6ea8c8ddf8318e07d29b91
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34972
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 14 insertions, 1 deletions

diff --git a/src/lib/bootblock.c b/src/lib/bootblock.c
index 3925e90afe..19841c6931 100644
--- a/src/lib/bootblock.c
+++ b/src/lib/bootblock.c
@@ -30,7 +30,15 @@ __weak void bootblock_soc_early_init(void) { /* do nothing */ }
 __weak void bootblock_soc_init(void) { /* do nothing */ }
 __weak void bootblock_mainboard_init(void) { /* do nothing */ }
 
-asmlinkage void bootblock_main_with_timestamp(uint64_t base_timestamp,
+/*
+ * This is a the same as the bootblock main(), with the difference that it does
+ * not collect a timestamp. Instead it accepts the initial timestamp and
+ * possibly additional timestamp entries as arguments. This can be used in cases
+ * where earlier stamps are available. Note that this function is designed to be
+ * entered from C code. This function assumes that the timer has already been
+ * initialized, so it does not call init_timer().
+ */
+static void bootblock_main_with_timestamp(uint64_t base_timestamp,
 	struct timestamp_entry *timestamps, size_t num_timestamps)
 {
 	/* Initialize timestamps if we have TIMESTAMP region in memlayout.ld. */
@@ -60,6 +68,11 @@ asmlinkage void bootblock_main_with_timestamp(uint64_t base_timestamp,
 	run_romstage();
 }
 
+void bootblock_main_with_basetime(uint64_t base_timestamp)
+{
+	bootblock_main_with_timestamp(base_timestamp, NULL, 0);
+}
+
 void main(void)
 {
 	uint64_t base_timestamp = 0;