Change in coreboot[master]: arch/x86: make postcar TempRamExit call generic

[Marshall Dawson (Code Review)]

Marshall Dawson has uploaded this change for review. ( https://review.coreboot.org/20965

Change subject: arch/x86: make postcar TempRamExit call generic
......................................................................

arch/x86: make postcar TempRamExit call generic

Move the FSP-specific call for tearing down cache-as-RAM out of postcar.c
and replace it with an empty weak function.

This patch omits checking if (IS_ENABLED(CONFIG_FSP_CAR)).  The
temp_ram_exit.c file with the real fsp_temp_ram_exit() is only built
when CONFIG_FSP_CAR is true.

Change-Id: I9adbb1f2a7b2ff50d9f36d5a3640f63410c09479
Signed-off-by: Marshall Dawson 
---
M src/arch/x86/include/arch/cpu.h
M src/arch/x86/postcar.c
M src/drivers/intel/fsp2_0/temp_ram_exit.c
3 files changed, 16 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/65/20965/1

diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h
index 8a44ef9..a379d20 100644
--- a/src/arch/x86/include/arch/cpu.h
+++ b/src/arch/x86/include/arch/cpu.h
@@ -297,6 +297,13 @@
  * utilizes prog_run() internally.
  */
 void run_postcar_phase(struct postcar_frame *pcf);
+
+/*
+ * Generic call from postcar for relying on FSP or binayPI to
+ * perform the cache-as-ram teardown.
+ */
+void run_blob_temp_ram_exit(void);
+
 #endif

#endif /* ARCH_CPU_H */
diff --git a/src/arch/x86/postcar.c b/src/arch/x86/postcar.c
index 34a4335..099650a 100644
--- a/src/arch/x86/postcar.c
+++ b/src/arch/x86/postcar.c
@@ -13,18 +13,18 @@
  * GNU General Public License for more details.
  */

+#include <arch/cpu.h>
 #include <cbmem.h>
 #include <console/console.h>
 #include <main_decl.h>
 #include <program_loading.h>
 #include <soc/intel/common/util.h>
-#include <fsp/util.h>
+
+__attribute__((weak)) void run_blob_temp_ram_exit(void) { /* do nothing */ }

void main(void)
 {
-	/* Call TempRamExit FSP API if enabled. */
-	if (IS_ENABLED(CONFIG_FSP_CAR))
-		fsp_temp_ram_exit();
+	run_blob_temp_ram_exit();

console_init();

diff --git a/src/drivers/intel/fsp2_0/temp_ram_exit.c b/src/drivers/intel/fsp2_0/temp_ram_exit.c
index 21eb367..fe33b74 100644
--- a/src/drivers/intel/fsp2_0/temp_ram_exit.c
+++ b/src/drivers/intel/fsp2_0/temp_ram_exit.c
@@ -47,3 +47,8 @@
    	die("TempRamExit returned an error!\n");
    }
 }
+
+void run_blob_temp_ram_exit(void)
+{
+	fsp_temp_ram_exit();
+}