setos

commit 28f4ea9de7453cc8cb467b90422405bd35fcc269
parent bdd7e90acee1f048946782373b1a2a3df5046d8b
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Sat, 30 Mar 2024 09:57:33 +0900

blue gradation

Diffstat:
M
kernel.c
 | 
18
++++++++++++++----
M
loader.c
 | 
5
++---
M
uefi.h
 | 
21
+++++++++++++++++++++

3 files changed, 37 insertions(+), 7 deletions(-)
diff --git a/kernel.c b/kernel.c
@@ -1,12 +1,22 @@
-typedef unsigned char uint8_t;
+#include "uefi.h"
+
+typedef unsigned char          uint8_t;
+typedef unsigned int           uint32_t;
 typedef unsigned long long int uint64_t;
 
 // Argument order is to interface to the MS-ABI
 void
-kernel_main(void *dummy0, void *dummy1, uint64_t fb_size, uint8_t *fb_base)
+kernel_main(void *dummy0, void *dummy1, void *dummy2,
+	EFI_GRAPHICS_OUTPUT_PROTOCOL *gop)
 {
-	for(int i = 0; i < fb_size; i++) {
-		fb_base[i] = i % 0xff;
+	uint32_t *fb_base = (uint8_t *)gop->Mode->FrameBufferBase;
+	uint32_t hrez = gop->Mode->Info->HorizontalResolution;
+	uint32_t vrez = gop->Mode->Info->VerticalResolution;
+	uint32_t sl = gop->Mode->Info->PixelsPerScanLine;
+	for (int i = 0; i < vrez; i++) {
+		for (int j = 0; j < hrez; j++) {
+			fb_base[i * sl + j] = j % 0xff;
+		}
 	}
 	for(;;);
 }
 \ No newline at end of file
diff --git a/loader.c b/loader.c
@@ -114,9 +114,8 @@ EfiMain(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *systab)
 		return stat;
 	}
 
-	typedef void (* Kernel) (UINT8 *fb_base, UINT64 fb_size);
-	((Kernel) kernel_ehdr.entry)(
-		(UINT8 *)gop->Mode->FrameBufferBase, gop->Mode->FrameBufferSize);
+	typedef void (* Kernel) (EFI_GRAPHICS_OUTPUT_PROTOCOL *);
+	((Kernel) kernel_ehdr.entry)(gop);
 
 	return EFI_SUCCESS;
 }
diff --git a/uefi.h b/uefi.h
@@ -116,7 +116,28 @@ typedef struct {
 
 typedef struct _EFI_GRAPHICS_OUTPUT_PROTOCOL EFI_GRAPHICS_OUTPUT_PROTOCOL;
 
+typedef enum {
+	PixelRedGreenBlueReserved8BitPerColor,
+	PixelBlueGreenRedReserved8BitPerColor,
+	PixelBitMask,
+	PixelBltOnly,
+	PixelFormatMax,
+} EFI_GRAPHICS_PIXEL_FORMAT;
+
+typedef struct {
+	UINT32 RedMask;
+	UINT32 GreenMask;
+	UINT32 BlueMask;
+	UINT32 ReservedMask;
+} EFI_PIXEL_BITMASK;
+
 typedef struct {
+	UINT32                    Version;
+	UINT32                    HorizontalResolution;
+	UINT32                    VerticalResolution;
+	EFI_GRAPHICS_PIXEL_FORMAT PixelFromat; // This is not fixed in size.
+	EFI_PIXEL_BITMASK         PixelInformation;
+	UINT32                    PixelsPerScanLine;
 } EFI_GRAPHICS_OUTPUT_MODE_INFORMATION;
 
 typedef struct {