[coreboot-gerrit] Patch set updated for coreboot: 2052e85 drivers/intel/fsp: Add find_saved_temp_mem()

[Kyösti Mälkki (kyosti.malkki@gmail.com)]

Kyösti Mälkki (kyosti.malkki at gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8194

-gerrit

commit 2052e85b6cbb2f3a3f5e2267d1c2c2c846a4a4bb
Author: Martin Roth <gaumless at gmail.com>
Date:   Sun Jan 11 14:11:55 2015 -0700

    drivers/intel/fsp: Add find_saved_temp_mem()
    
    Add a function to retrieve the location of the CAR temporary memory
    that was saved by the FSP into the HOB structure.
    
    Change-Id: I2635de5207cd699740721d333a7706425b837651
    Signed-off-by: Martin Roth <gaumless at gmail.com>
---
 src/drivers/intel/fsp/fsp_util.c | 18 ++++++++++++++++++
 src/drivers/intel/fsp/fsp_util.h |  7 +++++++
 2 files changed, 25 insertions(+)

diff --git a/src/drivers/intel/fsp/fsp_util.c b/src/drivers/intel/fsp/fsp_util.c
index d0ed9cf..0844b37 100644
--- a/src/drivers/intel/fsp/fsp_util.c
+++ b/src/drivers/intel/fsp/fsp_util.c
@@ -177,6 +177,24 @@ volatile u8 * find_fsp ()
 	return (fsp_ptr);
 }
 
+/** finds the saved temporary memory information in the FSP HOB list
+ *
+ * @param hob_list_ptr pointer to the start of the hob list
+ * @return pointer to saved CAR MEM or NULL if not found.
+ */
+void * find_saved_temp_mem(void *hob_list_ptr)
+{
+	EFI_GUID temp_hob_guid = FSP_BOOTLOADER_TEMPORARY_MEMORY_HOB_GUID;
+	EFI_HOB_GUID_TYPE *saved_mem_hob =
+			(EFI_HOB_GUID_TYPE *) find_hob_by_guid(
+			hob_list_ptr, &temp_hob_guid);
+
+	if (saved_mem_hob == NULL)
+		return NULL;
+
+	return (void *) ((char *) saved_mem_hob + sizeof(EFI_HOB_GUID_TYPE));
+}
+
 #ifndef __PRE_RAM__ /* Only parse HOB data in ramstage */
 
 void print_fsp_info(void) {
diff --git a/src/drivers/intel/fsp/fsp_util.h b/src/drivers/intel/fsp/fsp_util.h
index 3c72f24..a39f5a2 100644
--- a/src/drivers/intel/fsp/fsp_util.h
+++ b/src/drivers/intel/fsp/fsp_util.h
@@ -37,6 +37,7 @@ void print_fsp_info(void);
 void chipset_fsp_early_init(FSP_INIT_PARAMS *FspInitParams,
 	FSP_INFO_HEADER *fsp_ptr);
 void ChipsetFspReturnPoint(EFI_STATUS Status, VOID *HobListPtr);
+void * find_saved_temp_mem(void *hob_list_ptr);
 
 /* functions in hob.c */
 void print_hob_mem_attributes(void *Hobptr);
@@ -124,4 +125,10 @@ extern void *FspHobListPtr;
 			UpdData->member?"Enabled":"Disabled"); \
 	break;
 
+
+#ifndef FSP_BOOTLOADER_TEMPORARY_MEMORY_HOB_GUID
+#define FSP_BOOTLOADER_TEMPORARY_MEMORY_HOB_GUID \
+	{ 0xbbcff46c, 0xc8d3, 0x4113, { 0x89, 0x85, 0xb9, 0xd4, 0xf3, 0xb3, 0xf6, 0x4e } };
+#endif
+
 #endif	/* FSP_UTIL_H */