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>
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@ -71,6 +71,7 @@
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#define CBMEM_ID_VBOOT_HANDOFF 0x780074f0
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#define CBMEM_ID_CAR_GLOBALS 0xcac4e6a3
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#define CBMEM_ID_NONE 0x00000000
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#define CBMEM_ID_AGESA_RUNTIME 0x41474553
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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@ -47,6 +47,7 @@ static struct cbmem_id_to_name {
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{ CBMEM_ID_ROOT, "CBMEM ROOT " },
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{ CBMEM_ID_VBOOT_HANDOFF, "VBOOT " },
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{ CBMEM_ID_CAR_GLOBALS, "CAR GLOBALS" },
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{ CBMEM_ID_AGESA_RUNTIME, "AGESA RSVD " },
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};
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void cbmem_print_entry(int n, u32 id, u64 base, u64 size)
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@ -26,6 +26,29 @@
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#include "cbfs.h"
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#include "dimmSpd.h"
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#include "fam15tn_callouts.h"
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#include <cbmem.h>
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#define AGESA_RUNTIME_SIZE 4096
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static AGESA_STATUS alloc_cbmem(AGESA_BUFFER_PARAMS *AllocParams) {
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static unsigned int used = 0;
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void *p = cbmem_find(CBMEM_ID_AGESA_RUNTIME);
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if ((AGESA_RUNTIME_SIZE - used) < AllocParams->BufferLength) {
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return AGESA_BOUNDS_CHK;
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}
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/* first time allocation */
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if (!p) {
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p = cbmem_add(CBMEM_ID_AGESA_RUNTIME, AGESA_RUNTIME_SIZE);
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if (!p)
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return AGESA_BOUNDS_CHK;
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}
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AllocParams->BufferPointer = p + used;
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used += AllocParams->BufferLength;
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return AGESA_SUCCESS;
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}
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AGESA_STATUS fam15tn_AllocateBuffer (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
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{
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@ -48,6 +71,10 @@ AGESA_STATUS fam15tn_AllocateBuffer (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
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AllocParams = ((AGESA_BUFFER_PARAMS *) ConfigPtr);
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AllocParams->BufferPointer = NULL;
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/* if the allocation is for runtime use simple CBMEM data */
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if (Data == HEAP_CALLOUT_RUNTIME)
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return alloc_cbmem(AllocParams);
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AvailableHeapSize = BIOS_HEAP_SIZE - sizeof (BIOS_HEAP_MANAGER);
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BiosHeapBaseAddr = (UINT8 *) GetHeapBase(&(AllocParams->StdHeader));
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BiosHeapBasePtr = (BIOS_HEAP_MANAGER *) BiosHeapBaseAddr;
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