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authorBin Meng <bmeng.cn@gmail.com>2018-06-12 08:36:21 -0700
committerBin Meng <bmeng.cn@gmail.com>2018-06-17 21:16:04 +0800
commitd1fe9927465c3df03c7c0c8f62bd8468d24f66bc (patch)
tree824da8a88dd2c1f993bc82564fa395341a0a510b /lib/efi
parent252d41f1ae59974c8a9120c994c0688fb9cec2b7 (diff)
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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>
Diffstat (limited to 'lib/efi')
-rw-r--r--lib/efi/efi_stub.c15
1 files changed, 15 insertions, 0 deletions
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 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
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 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
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);