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authorMartin Roth <gaumless@gmail.com>2015-01-11 14:11:55 -0700
committerMartin Roth <gaumless@gmail.com>2015-01-29 04:33:53 +0100
commit5fc32bf5e6d26646f0e646cc70ccf48b7417ec43 (patch)
treedc1d7cc53d17d676a05a3750a4f2aa70ca61f5cb
parent80572851195243640f7531dd7f064e8b3f62a40d (diff)
downloadcoreboot-5fc32bf5e6d26646f0e646cc70ccf48b7417ec43.tar.xz
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@gmail.com> Reviewed-on: http://review.coreboot.org/8194 Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Tested-by: build bot (Jenkins)
-rw-r--r--src/drivers/intel/fsp/fsp_util.c18
-rw-r--r--src/drivers/intel/fsp/fsp_util.h7
2 files changed, 25 insertions, 0 deletions
diff --git a/src/drivers/intel/fsp/fsp_util.c b/src/drivers/intel/fsp/fsp_util.c
index d0ed9cfd6a..0844b37bb7 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 3c72f24e4c..a39f5a2700 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 */