Timothy Pearson (tpearson@raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11953
-gerrit
commit b8be7ebb7234d46e70cf136ea39ab95e84ed7543 Author: Timothy Pearson tpearson@raptorengineeringinc.com Date: Sat Sep 5 18:46:24 2015 -0500
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);