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authorMartin Roth <martin.roth@se-eng.com>2015-01-03 17:18:58 -0700
committerKyösti Mälkki <kyosti.malkki@gmail.com>2015-01-27 19:40:24 +0100
commit7b132deb80a81443faff983f25768d859af2e778 (patch)
treeb766ab87950ddfada51b3316d7de945689fd92d1 /src/drivers
parentfedd8e382ab7e10dfdbd29fcef1cf1b26d45d45e (diff)
downloadcoreboot-7b132deb80a81443faff983f25768d859af2e778.tar.xz
drivers/intel/fsp: Add HOB tools to work with GUIDs
Add new functions to: - Compare two GUIDs - Find a hob based on its GUID - Print information about GUID_EXTENSION type HOBs - Print a GUID's address and value Change-Id: I89377ec8ab7d98fe7dc129097e643aac061ab3a3 Signed-off-by: Martin Roth <martin.roth@se-eng.com> Reviewed-on: http://review.coreboot.org/8066 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/drivers')
-rw-r--r--src/drivers/intel/fsp/fsp_util.h4
-rw-r--r--src/drivers/intel/fsp/hob.c97
2 files changed, 101 insertions, 0 deletions
diff --git a/src/drivers/intel/fsp/fsp_util.h b/src/drivers/intel/fsp/fsp_util.h
index cb667dc1f0..3c72f24e4c 100644
--- a/src/drivers/intel/fsp/fsp_util.h
+++ b/src/drivers/intel/fsp/fsp_util.h
@@ -42,7 +42,11 @@ void ChipsetFspReturnPoint(EFI_STATUS Status, VOID *HobListPtr);
void print_hob_mem_attributes(void *Hobptr);
void print_hob_type_structure(u16 Hobtype, void *Hoblistptr);
void print_hob_resource_attributes(void *Hobptr);
+void print_guid_type_attributes(void *Hobptr);
const char * get_hob_type_string(void *Hobptr);
+void * find_hob_by_guid(void *Hoblistptr, EFI_GUID *guid1);
+uint8_t guids_are_equal(EFI_GUID *guid1, EFI_GUID *guid2);
+void printguid(EFI_GUID *guid);
/* Additional HOB types not included in the FSP:
* #define EFI_HOB_TYPE_HANDOFF 0x0001
diff --git a/src/drivers/intel/fsp/hob.c b/src/drivers/intel/fsp/hob.c
index 4537ffb31a..99c4ba16fb 100644
--- a/src/drivers/intel/fsp/hob.c
+++ b/src/drivers/intel/fsp/hob.c
@@ -20,8 +20,26 @@
#include <types.h>
#include <string.h>
#include <console/console.h>
+#include <lib.h> // hexdump
#include "fsp_util.h"
+
+/** Displays a GUID's address and value
+ *
+ * @param guid pointer to the GUID to display
+ */
+void printguid(EFI_GUID *guid)
+{
+ printk(BIOS_SPEW,"Address: %p Guid: %08lx-%04x-%04x-",
+ guid, (unsigned long)guid->Data1,
+ guid->Data2, guid->Data3);
+ printk(BIOS_SPEW,"%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ guid->Data4[0], guid->Data4[1],
+ guid->Data4[2], guid->Data4[3],
+ guid->Data4[4], guid->Data4[5],
+ guid->Data4[6], guid->Data4[7] );
+}
+
void print_hob_mem_attributes(void *Hobptr)
{
EFI_HOB_MEMORY_ALLOCATION *HobMemoryPtr = (EFI_HOB_MEMORY_ALLOCATION *)Hobptr;
@@ -118,6 +136,27 @@ const char * get_hob_type_string(void *Hobptr)
return Hobtypestring;
}
+/** Displays the length, location, and GUID value of a GUID extension
+ *
+ * The EFI_HOB_GUID_TYPE is very basic - it just contains the standard
+ * HOB header containing the HOB type and length, and a GUID for
+ * identification. The rest of the data is undefined and must be known
+ * based on the GUID.
+ *
+ * This displays the entire HOB length, and the location of the start
+ * of the HOB, *NOT* the length of or the start of the data inside the HOB.
+ *
+ * @param Hobptr
+ */
+void print_guid_type_attributes(void *Hobptr)
+{
+ printk(BIOS_SPEW, " at location %p with length0x%0lx\n ",
+ Hobptr, (unsigned long)(((EFI_PEI_HOB_POINTERS *) \
+ Hobptr)->Guid->Header.HobLength));
+ printguid(&(((EFI_HOB_GUID_TYPE *)Hobptr)->Name));
+
+}
+
/* Print out a structure of all the HOBs
* that match a certain type:
* Print all types (0x0000)
@@ -159,6 +198,8 @@ void print_hob_type_structure(u16 Hobtype, void *Hoblistptr)
print_hob_mem_attributes(Currenthob); break;
case EFI_HOB_TYPE_RESOURCE_DESCRIPTOR:
print_hob_resource_attributes(Currenthob); break;
+ case EFI_HOB_TYPE_GUID_EXTENSION:
+ print_guid_type_attributes(Currenthob); break;
}
}
@@ -170,3 +211,59 @@ void print_hob_type_structure(u16 Hobtype, void *Hoblistptr)
} while (!Lasthob);
printk(BIOS_DEBUG, "=== End of FSP HOB Data Structure ===\n\n");
}
+
+
+/** Finds a HOB entry based on type and guid
+ *
+ * @param current_hob pointer to the start of the HOB list
+ * @param guid the GUID of the HOB entry to find
+ * @return pointer to the start of the requested HOB or NULL if not found.
+ */
+void * find_hob_by_guid(void *current_hob, EFI_GUID *guid)
+{
+ do {
+ switch (((EFI_HOB_GENERIC_HEADER *)current_hob)->HobType) {
+
+ case EFI_HOB_TYPE_MEMORY_ALLOCATION:
+ if (guids_are_equal(guid, &(((EFI_HOB_MEMORY_ALLOCATION *) \
+ current_hob)->AllocDescriptor.Name)))
+ return current_hob;
+ break;
+ case EFI_HOB_TYPE_RESOURCE_DESCRIPTOR:
+ if (guids_are_equal(guid,
+ &(((EFI_HOB_RESOURCE_DESCRIPTOR *) \
+ current_hob)->Owner)))
+ return current_hob;
+ break;
+ case EFI_HOB_TYPE_GUID_EXTENSION:
+ if (guids_are_equal(guid, &(((EFI_HOB_GUID_TYPE *) \
+ current_hob)->Name)))
+ return current_hob;
+ break;
+ }
+
+ if (!END_OF_HOB_LIST(current_hob))
+ current_hob = GET_NEXT_HOB(current_hob); /* Get next HOB pointer */
+ } while (!END_OF_HOB_LIST(current_hob));
+
+ return NULL;
+}
+
+/** Compares a pair of GUIDs to see if they are equal
+ *
+ * GUIDs are 128 bits long, so compare them as pairs of quadwords.
+ *
+ * @param guid1 pointer to the first of the GUIDs to compare
+ * @param guid2 pointer to the second of the GUIDs to compare
+ * @return 1 if the GUIDs were equal, 0 if GUIDs were not equal
+ */
+uint8_t guids_are_equal(EFI_GUID *guid1, EFI_GUID *guid2)
+{
+ uint64_t* guid_1 = (void *) guid1;
+ uint64_t* guid_2 = (void *) guid2;
+
+ if ((*(guid_1) != *(guid_2)) || (*(guid_1 + 1) != *(guid_2 + 1)))
+ return 0;
+
+ return 1;
+}