From e0165fbc944521171cd2776be4d3f655712079d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= <kyosti.malkki@gmail.com>
Date: Sat, 9 Jan 2021 13:30:57 +0200
Subject: stage_cache: Add resume_from_stage_cache()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Factor out the condition when an attempt to load
stage from cache can be tried.

Change-Id: I936f07bed6fc82f46118d217f1fd233e2e041405
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50000
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
 src/include/stage_cache.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/include')

diff --git a/src/include/stage_cache.h b/src/include/stage_cache.h
index ba8827dad6..1e46b5cfe2 100644
--- a/src/include/stage_cache.h
+++ b/src/include/stage_cache.h
@@ -3,6 +3,7 @@
 #ifndef _STAGE_CACHE_H_
 #define _STAGE_CACHE_H_
 
+#include <romstage_handoff.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <program_loading.h>
@@ -38,6 +39,15 @@ static inline void stage_cache_get_raw(int stage_id, void **base, size_t *size)
 
 #endif
 
+static inline int resume_from_stage_cache(void)
+{
+	if (CONFIG(NO_STAGE_CACHE))
+		return 0;
+
+	/* TBD: Replace this with acpi_is_wakeup_s3(). */
+	return romstage_handoff_is_resume();
+}
+
 /* Fill in parameters for the external stage cache, if utilized. */
 void stage_cache_external_region(void **base, size_t *size);
 
-- 
cgit v1.2.3