efi_loader: console support for color attributes
Shell.efi uses this, and supporting color attributes makes things look
nicer. Map the EFI fg/bg color attributes to ANSI escape sequences.
Not all colors have a perfect match, but spec just says "Devices
supporting a different number of text colors are required to emulate the
above colors to the best of the device’s capabilities".
Signed-off-by: Rob Clark <robdclark@gmail.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Alexander Graf <agraf@suse.de>
[agraf: s/unsigned/unsigned int/]
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index 94c15b2..fcd7483 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -433,6 +433,39 @@
EFI_GUID(0x387477c2, 0x69c7, 0x11d2, \
0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+#define EFI_BLACK 0x00
+#define EFI_BLUE 0x01
+#define EFI_GREEN 0x02
+#define EFI_CYAN 0x03
+#define EFI_RED 0x04
+#define EFI_MAGENTA 0x05
+#define EFI_BROWN 0x06
+#define EFI_LIGHTGRAY 0x07
+#define EFI_BRIGHT 0x08
+#define EFI_DARKGRAY 0x08
+#define EFI_LIGHTBLUE 0x09
+#define EFI_LIGHTGREEN 0x0a
+#define EFI_LIGHTCYAN 0x0b
+#define EFI_LIGHTRED 0x0c
+#define EFI_LIGHTMAGENTA 0x0d
+#define EFI_YELLOW 0x0e
+#define EFI_WHITE 0x0f
+#define EFI_BACKGROUND_BLACK 0x00
+#define EFI_BACKGROUND_BLUE 0x10
+#define EFI_BACKGROUND_GREEN 0x20
+#define EFI_BACKGROUND_CYAN 0x30
+#define EFI_BACKGROUND_RED 0x40
+#define EFI_BACKGROUND_MAGENTA 0x50
+#define EFI_BACKGROUND_BROWN 0x60
+#define EFI_BACKGROUND_LIGHTGRAY 0x70
+
+/* extract foreground color from EFI attribute */
+#define EFI_ATTR_FG(attr) ((attr) & 0x07)
+/* treat high bit of FG as bright/bold (similar to edk2) */
+#define EFI_ATTR_BOLD(attr) (((attr) >> 3) & 0x01)
+/* extract background color from EFI attribute */
+#define EFI_ATTR_BG(attr) (((attr) >> 4) & 0x7)
+
struct efi_simple_text_output_protocol {
void *reset;
efi_status_t (EFIAPI *output_string)(