drivers/intel/{fsp1_1,fsp2_0}: Provide separate function for fsp load
Add a function to allow FSP component loading separately from silicon
initialization. This enables SoCs that might not have stage cache
available during silicon initialization to load/save components from/to
stage cache before it is relocated or destroyed.
BUG=chrome-os-partner:63114
BRANCH=None
TEST=Compiles successfully.
Change-Id: Iae77e20568418c29df9f69bd54aa571e153740c9
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/18413
Tested-by: build bot (Jenkins)
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/drivers/intel/fsp1_1/include/fsp/ramstage.h b/src/drivers/intel/fsp1_1/include/fsp/ramstage.h
index 5ce6aa8..a9f6a8d 100644
--- a/src/drivers/intel/fsp1_1/include/fsp/ramstage.h
+++ b/src/drivers/intel/fsp1_1/include/fsp/ramstage.h
@@ -21,6 +21,12 @@
#include <soc/intel/common/util.h>
#include <stdint.h>
+/*
+ * Load FSP from stage cache or CBFS. This allows SoCs to load FSP separately
+ * from calling silicon init. It might be required in cases where stage cache is
+ * no longer available by the point SoC calls into silicon init.
+ */
+void fsp_load(void);
/* Perform Intel silicon init. */
void intel_silicon_init(void);
void fsp_run_silicon_init(FSP_INFO_HEADER *fsp_info_header, int is_s3_wakeup);
diff --git a/src/drivers/intel/fsp1_1/ramstage.c b/src/drivers/intel/fsp1_1/ramstage.c
index dd1abbe..7d9ff8e 100644
--- a/src/drivers/intel/fsp1_1/ramstage.c
+++ b/src/drivers/intel/fsp1_1/ramstage.c
@@ -185,11 +185,15 @@
return 0;
}
-void intel_silicon_init(void)
+void fsp_load(void)
{
+ static int load_done;
struct prog fsp = PROG_INIT(PROG_REFCODE, "fsp.bin");
int is_s3_wakeup = acpi_is_wakeup_s3();
+ if (load_done)
+ return;
+
if (is_s3_wakeup && !IS_ENABLED(CONFIG_NO_STAGE_CACHE)) {
printk(BIOS_DEBUG, "FSP: Loading binary from cache\n");
stage_cache_load_stage(STAGE_REFCODE, &fsp);
@@ -201,7 +205,13 @@
/* FSP_INFO_HEADER is set as the program entry. */
fsp_update_fih(prog_entry(&fsp));
- fsp_run_silicon_init(fsp_get_fih(), is_s3_wakeup);
+ load_done = 1;
+}
+
+void intel_silicon_init(void)
+{
+ fsp_load();
+ fsp_run_silicon_init(fsp_get_fih(), acpi_is_wakeup_s3());
}
/* Initialize the UPD parameters for SiliconInit */