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authorTimothy Pearson <tpearson@raptorengineeringinc.com>2015-09-05 18:46:24 -0500
committerMartin Roth <martinroth@google.com>2015-10-27 15:12:08 +0100
commit2003844378e71194cb2fe5d6ee6d92a6293cb3a2 (patch)
tree7ecbc06271cfe3dda4feeee081c8e48201ac92da /src
parentff5d0b251830bdb4595972f2b2824ec780a09dca (diff)
cpu/amd/car: Add initial Suspend to RAM (S3) support
Romstage handoff copied from cpu/intel/haswell/romstage.c Change-Id: I1e1a67fa3c2c13cebcf8f0af318055b9d97d0a59 Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: http://review.coreboot.org/11953 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src')
-rw-r--r--src/cpu/amd/car/post_cache_as_ram.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/cpu/amd/car/post_cache_as_ram.c b/src/cpu/amd/car/post_cache_as_ram.c
index 8ec5c3b840..61d47a2ed9 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"
@@ -95,6 +97,13 @@ 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);
@@ -140,6 +149,7 @@ void cache_as_ram_new_stack (void)
if (acpi_is_wakeup_s3()) {
resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
+ print_car_debug("Resume backup memory location: %p\n", resume_backup_memory);
}
prepare_ramstage_region(resume_backup_memory);