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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>
This commit is contained in:
Timothy Pearson 2015-09-05 18:46:24 -05:00 committed by Martin Roth
parent ff5d0b2518
commit 2003844378
1 changed files with 10 additions and 0 deletions
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10
src/cpu/amd/car/post_cache_as_ram.c
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@ -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);