vboot: relocate code to log and clear recovery mode switch

Logging and clearing the recovery mode switch doesn't have
anything to do with vboot_handoff.  Move it to the main verstage
logic file.

BUG=b:124141368, b:124192753
TEST=make clean && make test-abuild
BRANCH=none

Change-Id: I2e74f3893463e43fe5fad4a8df8036560f34e0db
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33534
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/security/vboot/vboot_logic.c b/src/security/vboot/vboot_logic.c
index 7b98be28e4..62e033a0de 100644
--- a/src/security/vboot/vboot_logic.c
+++ b/src/security/vboot/vboot_logic.c
@@ -16,6 +16,7 @@
 #include <arch/exception.h>
 #include <assert.h>
 #include <bootmode.h>
+#include <cbmem.h>
 #include <console/console.h>
 #include <console/vtxprintf.h>
 #include <string.h>
@@ -281,6 +282,26 @@ static uint32_t extend_pcrs(struct vb2_context *ctx)
 		   vboot_extend_pcr(ctx, 1, HWID_DIGEST_PCR);
 }
 
+static void vboot_log_and_clear_recovery_mode_switch(int unused)
+{
+	/* Log the recovery mode switches if required, before clearing them. */
+	log_recovery_mode_switch();
+
+	/*
+	 * The recovery mode switch is cleared (typically backed by EC) here
+	 * to allow multiple queries to get_recovery_mode_switch() and have
+	 * them return consistent results during the verified boot path as well
+	 * as dram initialization. x86 systems ignore the saved dram settings
+	 * in the recovery path in order to start from a clean slate. Therefore
+	 * clear the state here since this function is called when memory
+	 * is known to be up.
+	 */
+	clear_recovery_mode_switch();
+}
+#if !CONFIG(VBOOT_STARTS_IN_ROMSTAGE)
+ROMSTAGE_CBMEM_INIT_HOOK(vboot_log_and_clear_recovery_mode_switch)
+#endif
+
 /**
  * Verify and select the firmware in the RW image
  *
@@ -448,6 +469,11 @@ void verstage_main(void)
 	vboot_set_selected_region(region_device_region(&fw_main));
 
  verstage_main_exit:
+	/* If CBMEM is not up yet, let the ROMSTAGE_CBMEM_INIT_HOOK take care
+	   of running this function. */
+	if (ENV_ROMSTAGE && CONFIG(VBOOT_STARTS_IN_ROMSTAGE))
+		vboot_log_and_clear_recovery_mode_switch(0);
+
 	vboot_finalize_work_context(&ctx);
 	timestamp_add_now(TS_END_VBOOT);
 }