kernel: Last prep-work for v1.3 release

sasdallas · Sep 10, 2024 · 3d2c227 · 3d2c227
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diff --git a/README.md b/README.md
@@ -38,6 +38,13 @@ The initial ramdisk and the kernel are placed under `sysroot/boot/`.
 
 Running `qemu make_drive` will create an ext2 drive with `sysroot` as its filesystem.   
 
+# Real Hardware
+Scary! I wouldn't do this, but it's possible. Here are some issues I've encountered:
+
+- reduceOS will commonly fail to initialize a video driver. If this happens you'll see the message that says "BIOS call failed". To fix this, add `--force_vga` to the kernel (the only way you'll see the BIOS call failed message is with this anyways)
+- Occasionally module and debug symbols will fail to load. No way to fix this unless you patch the kernel.
+- reduceOS won't usually run on newer UEFI-only hardware. No fix.
+
 
 # Kernel Drivers
 reduceOS operates on a semi-modular design, which allows for drivers/modules to be easily made and loaded.

diff --git a/obj/gfx/gfx.o b/obj/gfx/gfx.o
diff --git a/obj/kernel/cmds.o b/obj/kernel/cmds.o
diff --git a/obj/kernel/kernel.o b/obj/kernel/kernel.o
diff --git a/obj/polyaniline/efi/BOOTX64.EFI b/obj/polyaniline/efi/BOOTX64.EFI
diff --git a/obj/polyaniline/efi/efi.so b/obj/polyaniline/efi/efi.so
diff --git a/obj/polyaniline/efi/efildr/boot.o b/obj/polyaniline/efi/efildr/boot.o
diff --git a/obj/polyaniline/efi/polyaniline/boot_terminal.o b/obj/polyaniline/efi/polyaniline/boot_terminal.o
diff --git a/obj/polyaniline/efi/polyaniline/elf.o b/obj/polyaniline/efi/polyaniline/elf.o
diff --git a/obj/polyaniline/efi/polyaniline/libc_string.o b/obj/polyaniline/efi/polyaniline/libc_string.o
diff --git a/obj/polyaniline/efi/polyaniline/main.o b/obj/polyaniline/efi/polyaniline/main.o
diff --git a/out/fatimg/isodir/initrd b/out/fatimg/isodir/initrd
diff --git a/out/fatimg/isodir/kernel b/out/fatimg/isodir/kernel
diff --git a/out/iso/builddir/boot/kernel.elf b/out/iso/builddir/boot/kernel.elf
diff --git a/source/boot/Makefile b/source/boot/Makefile
@@ -58,14 +58,14 @@ $(OUT_EFI)/%.o: %.S Makefile
 
 # .c compilation (polyaniline is totally part of the kernel, dw about it)
 $(OUT_EFI)/%.o: %.c Makefile
-	gcc $< -D__KERNEL__ -Ipolyaniline/include/ -c -fno-stack-protector -fpic -fshort-wchar -mno-red-zone -I /usr/include/efi/ -I /usr/include/efi/x86_64 -DEFI_FUNCTION_WRAPPER -DPLATFORM_IS_SELECTED -DPLATFORM_EFI -o $@
+	gcc $< -g -D__KERNEL__ -w -Ipolyaniline/include/ -c -fno-stack-protector -fpic -fshort-wchar -mno-red-zone -I /usr/include/efi/ -I /usr/include/efi/x86_64 -DEFI_FUNCTION_WRAPPER -DPLATFORM_IS_SELECTED -DPLATFORM_EFI -o $@
 
 # Compilation functions (BIOS)
 $(OUT_BIOS)/%.o: %.S Makefile
 	$(CC) -m32 -c $< -o $@
 
 $(OUT_BIOS)/%.o: %.c Makefile
-	$(CC) $(BIOS_C_FLAGS) -c $< -o $@
+	$(CC) $(BIOS_C_FLAGS) -w -c $< -o $@
 
 $(OUT_BIOS)/mbr.bin:
 	nasm -f bin biosmbr/mbr.asm -o $(OUT_BIOS)/mbr.bin

diff --git a/source/boot/efildr/boot.c b/source/boot/efildr/boot.c
@@ -21,6 +21,11 @@ efi_main (EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable)
     Image_Handle = ImageHandle;
 
     // Print loading text
+    EFI_LOADED_IMAGE *loadedImage = NULL;
+    EFI_STATUS status = uefi_call_wrapper(ST->BootServices->HandleProtocol, 3, ImageHandle, &LoadedImageProtocol, (void**)&loadedImage);
+    Print(L"Image base: 0x%lx\n", loadedImage->ImageBase);
+
+
     Print(L"Starting the Polyaniline bootloader...\n");
     Print(L"Initializing graphics subsystem...\n");
 

diff --git a/source/boot/legacy/newboot/polyaniline/boot_terminal.c b/source/boot/legacy/newboot/polyaniline/boot_terminal.c
@@ -56,10 +56,12 @@ int GOP_Init() {
 
     EFI_STATUS status = uefi_call_wrapper(ST->BootServices->LocateHandleBuffer, 5, ByProtocol, &efi_graphics_output_protocol_guid, NULL, &handles_count, &handles);
     if (EFI_ERROR(status)) {
-        Print(L"terminal: uefi_call_wrapper(ST->BootServices->LocateHandleBuffer) failed");
+        Print(L"terminal: uefi_call_wrapper(ST->BootServices->LocateHandleBuffer) failed\n");
         for (;;);
     }
 
+	Print(L"Handle buffer located\n");
+
 
     status = uefi_call_wrapper(ST->BootServices->HandleProtocol, 3, handles[0], &efi_graphics_output_protocol_guid, (void**)&graphics);
     if (EFI_ERROR(status)) {

diff --git a/source/boot/polyaniline/boot_terminal.c b/source/boot/polyaniline/boot_terminal.c
@@ -46,7 +46,7 @@ EFI_GRAPHICS_OUTPUT_PROTOCOL *gop; // Graphics Output Protocol
 // Initialize the Graphics Output Protocol function
 int GOP_Init() {
     // todo: rewrite this!
-
+	Print(L"Initializing GOP\n");
     static EFI_GUID efi_graphics_output_protocol_guid = {0x9042a9de,0x23dc,0x4a38,  {0x96,0xfb,0x7a,0xde,0xd0,0x80,0x51,0x6a}};
 
     // Grab handle buffers

diff --git a/source/boot/polyaniline/main.c b/source/boot/polyaniline/main.c
@@ -24,6 +24,7 @@ char *initrd_filename = "RAMDISK.IMG";
 static int boot();
 
 void bootloader_main() {
+
     _clearScreen();
     draw_polyaniline_testTube();
     boot_printf("polyaniline v%s - codename %s\n", VERSION, CODENAME);