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AMD Fam15tn: Add support for AGESA runtime allocation in CBMEM 

The IOMMU AGESA needs a reserved scratch space and it wants
to allocate the stuff for runtime. So provide a simple
allocator for 4 KB CBMEM page.

Change-Id: I53bdfcd2cd69f84fbfbc6edea53a051f516c05cc
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/3315
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Rudolf Marek 2013-05-27 16:09:44 +02:00 committed by Ronald G. Minnich
parent 88ebbeb7e2
commit 5ce0506618
3 changed files with 29 additions and 0 deletions
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1
src/include/cbmem.h
View File

@ -71,6 +71,7 @@
#define CBMEM_ID_VBOOT_HANDOFF 0x780074f0
#define CBMEM_ID_CAR_GLOBALS 0xcac4e6a3
#define CBMEM_ID_NONE 0x00000000
#define CBMEM_ID_AGESA_RUNTIME 0x41474553
#ifndef __ASSEMBLER__
#include <stdint.h>

1
src/lib/cbmem_info.c
View File

@ -47,6 +47,7 @@ static struct cbmem_id_to_name {
{ CBMEM_ID_ROOT, "CBMEM ROOT " },
{ CBMEM_ID_VBOOT_HANDOFF, "VBOOT " },
{ CBMEM_ID_CAR_GLOBALS, "CAR GLOBALS" },
{ CBMEM_ID_AGESA_RUNTIME, "AGESA RSVD " },
};
void cbmem_print_entry(int n, u32 id, u64 base, u64 size)

27
src/northbridge/amd/agesa/family15tn/fam15tn_callouts.c
View File

@ -26,6 +26,29 @@
#include "cbfs.h"
#include "dimmSpd.h"
#include "fam15tn_callouts.h"
#include <cbmem.h>
#define AGESA_RUNTIME_SIZE 4096
static AGESA_STATUS alloc_cbmem(AGESA_BUFFER_PARAMS *AllocParams) {
static unsigned int used = 0;
void *p = cbmem_find(CBMEM_ID_AGESA_RUNTIME);
if ((AGESA_RUNTIME_SIZE - used) < AllocParams->BufferLength) {
return AGESA_BOUNDS_CHK;
}
/* first time allocation */
if (!p) {
p = cbmem_add(CBMEM_ID_AGESA_RUNTIME, AGESA_RUNTIME_SIZE);
if (!p)
return AGESA_BOUNDS_CHK;
}
AllocParams->BufferPointer = p + used;
used += AllocParams->BufferLength;
return AGESA_SUCCESS;
}
AGESA_STATUS fam15tn_AllocateBuffer (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
@ -48,6 +71,10 @@ AGESA_STATUS fam15tn_AllocateBuffer (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
AllocParams = ((AGESA_BUFFER_PARAMS *) ConfigPtr);
AllocParams->BufferPointer = NULL;
/* if the allocation is for runtime use simple CBMEM data */
if (Data == HEAP_CALLOUT_RUNTIME)
return alloc_cbmem(AllocParams);
AvailableHeapSize = BIOS_HEAP_SIZE - sizeof (BIOS_HEAP_MANAGER);
BiosHeapBaseAddr = (UINT8 *) GetHeapBase(&(AllocParams->StdHeader));
BiosHeapBasePtr = (BIOS_HEAP_MANAGER *) BiosHeapBaseAddr;