efi: stub: Pass EFI GOP information to U-Boot payload
If UEFI BIOS has the graphics output protocol (GOP), let's pass its
information to U-Boot payload so that U-Boot can utilize it (eg:
an EFI framebuffer driver).
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/efi/efi_stub.c b/lib/efi/efi_stub.c
index 9deffe2..262fc56 100644
--- a/lib/efi/efi_stub.c
+++ b/lib/efi/efi_stub.c
@@ -275,6 +275,9 @@
struct efi_boot_services *boot = sys_table->boottime;
struct efi_mem_desc *desc;
struct efi_entry_memmap map;
+ struct efi_gop *gop;
+ struct efi_entry_gopmode mode;
+ efi_guid_t efi_gop_guid = EFI_GOP_GUID;
efi_uintn_t key, desc_size, size;
efi_status_t ret;
u32 version;
@@ -313,6 +316,18 @@
if (ret)
return ret;
+ ret = boot->locate_protocol(&efi_gop_guid, NULL, (void **)&gop);
+ if (ret) {
+ puts(" GOP unavailable\n");
+ } else {
+ mode.fb_base = gop->mode->fb_base;
+ mode.fb_size = gop->mode->fb_size;
+ mode.info_size = gop->mode->info_size;
+ add_entry_addr(priv, EFIET_GOP_MODE, &mode, sizeof(mode),
+ gop->mode->info,
+ sizeof(struct efi_gop_mode_info));
+ }
+
ret = boot->get_memory_map(&size, desc, &key, &desc_size, &version);
if (ret) {
printhex2(ret);