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From 043f3abb58733fe14feb7cca5c2101f6a905aeb8 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineeringinc.com>
Date: Sat, 5 Sep 2015 18:46:24 -0500
Subject: [PATCH 020/139] cpu/amd/car: Add initial Suspend to RAM (S3) support
Change-Id: I1e1a67fa3c2c13cebcf8f0af318055b9d97d0a59
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
---
src/cpu/amd/car/post_cache_as_ram.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/cpu/amd/car/post_cache_as_ram.c b/src/cpu/amd/car/post_cache_as_ram.c
index 230d1aa..e265de1 100644
--- a/src/cpu/amd/car/post_cache_as_ram.c
+++ b/src/cpu/amd/car/post_cache_as_ram.c
@@ -1,4 +1,5 @@
/* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ * Copyright (C) 2012 ChromeOS Authors
* 2005.6 by yhlu
* 2006.3 yhlu add copy data from CAR to ram
*/
@@ -9,6 +10,7 @@
#include <cpu/amd/mtrr.h>
#include <cpu/amd/car.h>
#include <arch/acpi.h>
+#include <romstage_handoff.h>
#include "cbmem.h"
#include "cpu/amd/car/disable_cache_as_ram.c"
@@ -103,6 +105,13 @@ void post_cache_as_ram(void)
{
void *resume_backup_memory = NULL;
+ struct romstage_handoff *handoff;
+ handoff = romstage_handoff_find_or_add();
+ if (handoff != NULL)
+ handoff->s3_resume = acpi_is_wakeup_s3();
+ else
+ printk(BIOS_DEBUG, "Romstage handoff structure not added!\n");
+
int s3resume = acpi_is_wakeup_s3();
if (s3resume) {
cbmem_recovery(s3resume);
@@ -150,6 +159,9 @@ void cache_as_ram_new_stack (void)
if (acpi_is_wakeup_s3()) {
resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
+#if PRINTK_IN_CAR
+ printk(BIOS_DEBUG, "Resume backup memory location: %p\n", resume_backup_memory);
+#endif
}
prepare_ramstage_region(resume_backup_memory);
--
1.9.1
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