diff options
Diffstat (limited to 'drivers/firmware/efi/libstub')
| -rw-r--r-- | drivers/firmware/efi/libstub/mem.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/firmware/efi/libstub/mem.c b/drivers/firmware/efi/libstub/mem.c index 5808c8764e64..17060086913a 100644 --- a/drivers/firmware/efi/libstub/mem.c +++ b/drivers/firmware/efi/libstub/mem.c @@ -65,8 +65,20 @@ fail: return status; } -/* - * Allocate at the highest possible address that is not above 'max'. +/** + * efi_allocate_pages() - Allocate memory pages + * @size: minimum number of bytes to allocate + * @addr: On return the address of the first allocated page. The first + * allocated page has alignment EFI_ALLOC_ALIGN which is an + * architecture dependent multiple of the page size. + * @max: the address that the last allocated memory page shall not + * exceed + * + * Allocate pages as EFI_LOADER_DATA. The allocated pages are aligned according + * to EFI_ALLOC_ALIGN. The last allocated page will not exceed the address + * given by @max. + * + * Return: status code */ efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr, unsigned long max) |