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authorKyösti Mälkki <kyosti.malkki@gmail.com>2014-10-16 20:58:47 +0300
committerKyösti Mälkki <kyosti.malkki@gmail.com>2014-10-19 06:15:00 +0200
commit7b14f08f45f54bc36510e4b12febc1831cd744ef (patch)
tree692561e262f68b0b7b2f22dae6d308593291daac /src/arch/x86/boot
parent1729cd85744129104e3e41aac1f18e43b62f79ff (diff)
ACPI: Allocate S3 resume backup in CBMEM earlier
These allocations are not really part of write_tables() and the move opens possibilities to use CBMEM instead of SPI Flash to restore some parts of system state after S3 resume. Change-Id: I0c36bcee3f1da525af077fc1d18677ee85097e4d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/7097 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
Diffstat (limited to 'src/arch/x86/boot')
-rw-r--r--src/arch/x86/boot/acpi.c17
-rw-r--r--src/arch/x86/boot/tables.c10
2 files changed, 17 insertions, 10 deletions
diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c
index 3859bc1854..c3c946deaa 100644
--- a/src/arch/x86/boot/acpi.c
+++ b/src/arch/x86/boot/acpi.c
@@ -878,6 +878,23 @@ void acpi_fail_wakeup(void)
acpi_slp_type = 0;
}
+void acpi_prepare_resume_backup(void)
+{
+ if (!acpi_s3_resume_allowed())
+ return;
+
+ /* Let's prepare the ACPI S3 Resume area now already, so we can rely on
+ * it being there during reboot time. We don't need the pointer, nor
+ * the result right now. If it fails, ACPI resume will be disabled.
+ */
+
+ if (HIGH_MEMORY_SAVE)
+ cbmem_add(CBMEM_ID_RESUME, HIGH_MEMORY_SAVE);
+
+ if (HIGH_MEMORY_SCRATCH)
+ cbmem_add(CBMEM_ID_RESUME_SCRATCH, HIGH_MEMORY_SCRATCH);
+}
+
static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
{
if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)
diff --git a/src/arch/x86/boot/tables.c b/src/arch/x86/boot/tables.c
index e5fb43a9b7..9f2afd4a2f 100644
--- a/src/arch/x86/boot/tables.c
+++ b/src/arch/x86/boot/tables.c
@@ -196,16 +196,6 @@ void write_tables(void)
post_code(0x9e);
- /* Let's prepare the ACPI S3 Resume area now already, so we can rely on
- * it begin there during reboot time. We don't need the pointer, nor
- * the result right now. If it fails, ACPI resume will be disabled.
- */
- if (HIGH_MEMORY_SAVE && acpi_s3_resume_allowed())
- cbmem_add(CBMEM_ID_RESUME, HIGH_MEMORY_SAVE);
-
- if (HIGH_MEMORY_SCRATCH && acpi_s3_resume_allowed())
- cbmem_add(CBMEM_ID_RESUME_SCRATCH, HIGH_MEMORY_SCRATCH);
-
#define MAX_COREBOOT_TABLE_SIZE (32 * 1024)
post_code(0x9d);