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authorHeinrich Schuchardt <xypron.glpk@gmx.de>2018-02-05 18:24:26 +0100
committerAlexander Graf <agraf@suse.de>2018-04-04 11:00:07 +0200
commitf7c342f413a97c8fb097c3a0649aa5bbc2bcfd26 (patch)
tree25e83721a89daf2fb62044277880de223249fc5a /lib
parent0aa2da788bb5c6dd249e33a8d3416f9d2ae9ee09 (diff)
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efi_loader: show UEFI revision in helloworld
Output the UEFI revision number in helloworld. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib')
-rw-r--r--lib/efi_loader/helloworld.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/efi_loader/helloworld.c b/lib/efi_loader/helloworld.c
index 1ec0179..6c539ba 100644
--- a/lib/efi_loader/helloworld.c
+++ b/lib/efi_loader/helloworld.c
@@ -46,9 +46,27 @@ efi_status_t EFIAPI efi_main(efi_handle_t handle,
struct efi_loaded_image *loaded_image;
efi_status_t ret;
efi_uintn_t i;
+ u16 rev[] = L"0.0.0";
con_out->output_string(con_out, L"Hello, world!\n");
+ /* Print the revision number */
+ rev[0] = (systable->hdr.revision >> 16) + '0';
+ rev[4] = systable->hdr.revision & 0xffff;
+ for (; rev[4] >= 10;) {
+ rev[4] -= 10;
+ ++rev[2];
+ }
+ /* Third digit is only to be shown if non-zero */
+ if (rev[4])
+ rev[4] += '0';
+ else
+ rev[3] = 0;
+
+ con_out->output_string(con_out, L"Running on UEFI ");
+ con_out->output_string(con_out, rev);
+ con_out->output_string(con_out, L"\n");
+
/* Get the loaded image protocol */
ret = boottime->handle_protocol(handle, &loaded_image_guid,
(void **)&loaded_image);