diff options
| author | Simon Glass <sjg@chromium.org> | 2024-09-26 23:59:35 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-10-09 22:04:56 -0600 |
| commit | 3899e3f0ba1a71a8d70fd28f7983d34aefbf8ddc (patch) | |
| tree | c23ad7cad81908c8d53e7206bcd4a6da7f8578ba /lib/efi_loader/helloworld.c | |
| parent | 369734486687c55382014832405162f5fe6a65d6 (diff) | |
efi_loader: Show FirmwareVendor and FirmwareRevision in helloworld
Show the firmware vendor and revision to make it clear which firmware is
used, e.g. whether U-Boot is providing the boot services.
The output will look like
Firmware vendor: Das U-Boot
Firmware revision: 20241000
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Diffstat (limited to 'lib/efi_loader/helloworld.c')
| -rw-r--r-- | lib/efi_loader/helloworld.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/efi_loader/helloworld.c b/lib/efi_loader/helloworld.c index 586177de0c8..d10a5229f74 100644 --- a/lib/efi_loader/helloworld.c +++ b/lib/efi_loader/helloworld.c @@ -72,6 +72,33 @@ static void uint2dec(u32 value, u16 **buf) } /** + * Print an unsigned 32bit value as hexadecimal number to an u16 string + * + * @value: value to be printed + * @buf: pointer to buffer address + * on return position of terminating zero word + */ +static void uint2hex(u32 value, u16 **buf) +{ + u16 *pos = *buf; + int i; + u16 c; + + for (i = 0; i < 8; ++i) { + /* Write current digit */ + c = value >> 28; + value <<= 4; + if (c < 10) + c += '0'; + else + c += 'a' - 10; + *pos++ = c; + } + *pos = 0; + *buf = pos; +} + +/** * print_uefi_revision() - print UEFI revision number */ static void print_uefi_revision(void) @@ -96,6 +123,16 @@ static void print_uefi_revision(void) con_out->output_string(con_out, u"Running on UEFI "); con_out->output_string(con_out, rev); con_out->output_string(con_out, u"\r\n"); + + con_out->output_string(con_out, u"Firmware vendor: "); + con_out->output_string(con_out, systable->fw_vendor); + con_out->output_string(con_out, u"\r\n"); + + buf = rev; + uint2hex(systable->fw_revision, &buf); + con_out->output_string(con_out, u"Firmware revision: "); + con_out->output_string(con_out, rev); + con_out->output_string(con_out, u"\r\n"); } /** |