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Differential D19341 Diff 54758 head/stand/efi/loader/copy.c

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head/stand/efi/loader/copy.c

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} }
#define KERNEL_PHYSICAL_BASE (2*1024*1024) #define KERNEL_PHYSICAL_BASE (2*1024*1024)
static void static void
efi_verify_staging_size(unsigned long *nr_pages) efi_verify_staging_size(unsigned long *nr_pages)
{ {
UINTN sz; UINTN sz;
EFI_MEMORY_DESCRIPTOR *map, *p; EFI_MEMORY_DESCRIPTOR *map = NULL, *p;
EFI_PHYSICAL_ADDRESS start, end; EFI_PHYSICAL_ADDRESS start, end;
UINTN key, dsz; UINTN key, dsz;
UINT32 dver; UINT32 dver;
EFI_STATUS status; EFI_STATUS status;
int i, ndesc; int i, ndesc;
unsigned long available_pages = 0; unsigned long available_pages = 0;
sz = 0; sz = 0;
status = BS->GetMemoryMap(&sz, 0, &key, &dsz, &dver);
for (;;) {
status = BS->GetMemoryMap(&sz, map, &key, &dsz, &dver);
if (!EFI_ERROR(status))
break;
if (status != EFI_BUFFER_TOO_SMALL) { if (status != EFI_BUFFER_TOO_SMALL) {
printf("Can't determine memory map size\n"); printf("Can't read memory map: %lu\n",
return; EFI_ERROR_CODE(status));
goto out;
} }
map = malloc(sz); free(map);
status = BS->GetMemoryMap(&sz, map, &key, &dsz, &dver);
if (EFI_ERROR(status)) { /* Allocate 10 descriptors more than the size reported,
printf("Can't read memory map\n"); * to allow for any fragmentation caused by calling
* malloc */
map = malloc(sz + (10 * dsz));
if (map == NULL) {
printf("Unable to allocate memory\n");
goto out; goto out;
}
} }
ndesc = sz / dsz; ndesc = sz / dsz;
for (i = 0, p = map; i < ndesc; for (i = 0, p = map; i < ndesc;
i++, p = NextMemoryDescriptor(p, dsz)) { i++, p = NextMemoryDescriptor(p, dsz)) {
start = p->PhysicalStart; start = p->PhysicalStart;
end = start + p->NumberOfPages * EFI_PAGE_SIZE; end = start + p->NumberOfPages * EFI_PAGE_SIZE;
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