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efi_loader: Add check for fallback fdt memory reservation

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When running bootefi, we allocate new space but never check whether
the allocation succeeded. This patch adds a check so that in case
things go wrong, we at least know they did.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2017-07-03 13:32:35 +02:00
parent 8d6040c725
commit 85a6e9b3c9
1 changed files with 6 additions and 0 deletions
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6
cmd/bootefi.c
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@ -133,7 +133,13 @@ static void *copy_fdt(void *fdt)
&new_fdt_addr) != EFI_SUCCESS) {
/* If we can't put it there, put it somewhere */
new_fdt_addr = (ulong)memalign(4096, fdt_size);
if (efi_allocate_pages(1, EFI_BOOT_SERVICES_DATA, fdt_pages,
&new_fdt_addr) != EFI_SUCCESS) {
printf("ERROR: Failed to reserve space for FDT\n");
return NULL;
}
}
new_fdt = (void*)(ulong)new_fdt_addr;
memcpy(new_fdt, fdt, fdt_totalsize(fdt));
fdt_set_totalsize(new_fdt, fdt_size);