Update Zealbooter to Limine 8.x and backport template changes

build/build-iso.sh

@@ -66,7 +66,7 @@ umount_tempdisk
 echo "Rebuilding kernel headers, kernel, OS, and building Distro ISO ..."
 $QEMU_BIN_PATH/qemu-system-x86_64 -machine q35 $KVM -drive format=raw,file=$TMPDISK -m 1G -rtc base=localtime -smp 4 -device isa-debug-exit $QEMU_HEADLESS
 
-LIMINE_BINARY_BRANCH="v6.x-branch-binary"
+LIMINE_BINARY_BRANCH="v8.x-binary"
 
 if [ -d "limine" ]
 then
@@ -110,7 +110,7 @@ sudo cp limine/limine-uefi-cd.bin $TMPISODIR/Boot/Limine-UEFI-CD.BIN
 sudo cp limine/limine-bios-cd.bin $TMPISODIR/Boot/Limine-BIOS-CD.BIN
 sudo cp limine/limine-bios.sys $TMPISODIR/Boot/Limine-BIOS.SYS
 sudo cp ../zealbooter/bin/kernel $TMPISODIR/Boot/ZealBooter.ELF
-sudo cp ../zealbooter/Limine.CFG $TMPISODIR/Boot/Limine.CFG
+sudo cp ../zealbooter/limine.conf $TMPISODIR/Boot/Limine.CONF
 echo "Copying DVDKernel.ZXE over ISO Boot/Kernel.ZXE ..."
 sudo mv $TMPMOUNT/Tmp/DVDKernel.ZXE $TMPISODIR/Boot/Kernel.ZXE
 sudo rm $TMPISODIR/Tmp/DVDKernel.ZXE 2> /dev/null

src/Kernel/KernelA.HH

@@ -3026,7 +3026,7 @@ class CAtapiModeWriteList
 #define FILEMASK_AOT	"*.ZC*;*.HH*;*.PRJ*"
 #define FILEMASK_SRC	"*.ZC*;*.HH*;*.IN*;*.PRJ*"
 #define FILEMASK_DD 	FILEMASK_SRC ";*.DD*"
-#define FILEMASK_TXT	FILEMASK_DD ";*.TXT*;*.CFG*"
+#define FILEMASK_TXT	FILEMASK_DD ";*.TXT*;*.CFG*;*.CONF*"
 #define FILEMASK_GR 	"*.GR*"
 
 #help_index "File/Low Level"

src/Misc/OSInstall.ZC

@@ -111,7 +111,7 @@ U0 OSMerge(U8 dst_drv, U8 src_drv=':')
 	Del("B:/Misc/Bible.TXT");		// Deleting from B:/ prevents causing hang when merging large .TXT files,
 	Del("B:/Misc/Clementine.TXT");	// they will instead be copied over from boot drive in OSMergeInner
 
-	Del("B:/Boot/Limine.CFG"); // Delete to make merge output ignore (copy) this, since it gets regenerated later
+	Del("B:/Boot/Limine.CONF"); // Delete to make merge output ignore (copy) this, since it gets regenerated later
 
 	DocMax;
 
@@ -129,7 +129,7 @@ U0 OSMerge(U8 dst_drv, U8 src_drv=':')
 
 	ExePrint("Del(\"%C:/Boot/Limine-BIOS-CD.BIN\");", dst_drv);
 	ExePrint("Del(\"%C:/Boot/Limine-UEFI-CD.BIN\");", dst_drv);
-	ExePrint("Del(\"%C:/Boot/Limine.CFG\");", dst_drv);
+	ExePrint("Del(\"%C:/Boot/Limine.CONF\");", dst_drv);
 	ExePrint("Del(\"%C:/boot.catalog\");", dst_drv);
 
 }
@@ -208,7 +208,7 @@ U0 OSUpgrade()
 				if (ch == 'Z')
 				{
 					BootMHDIns(drv_let);
-					"\n(Generating optional UEFI-mode Limine.CFG...)\n";
+					"\n(Generating optional UEFI-mode Limine.CONF...)\n";
 					LimineCFGMake(drv_let);
 				}
 				else
@@ -247,7 +247,7 @@ U0 InstallDrive(U8 drv_let)
 
 	ExePrint("Del(\"%C:/Boot/Limine-BIOS-CD.BIN\");", drv_let);
 	ExePrint("Del(\"%C:/Boot/Limine-UEFI-CD.BIN\");", drv_let);
-	ExePrint("Del(\"%C:/Boot/Limine.CFG\");", drv_let);
+	ExePrint("Del(\"%C:/Boot/Limine.CONF\");", drv_let);
 	ExePrint("Del(\"%C:/boot.catalog\");", drv_let);
 
 	ExePrint("DirMake(\"%C:/Tmp\");",				drv_let);
@@ -351,7 +351,7 @@ U0 VMInstallWiz()
 				if (ch == 'Z')
 				{
 					BootMHDIns('C');
-					"\n(Generating optional UEFI-mode Limine.CFG...)\n";
+					"\n(Generating optional UEFI-mode Limine.CONF...)\n";
 					LimineCFGMake('C');
 				}
 				else
@@ -467,8 +467,8 @@ U0 RegularInstallWiz()
 				if (ch == 'Z')
 				{
 					BootMHDIns(drv_let);
-					"\n(Generating optional UEFI-mode Limine.CFG...)\n";
+					"\n(Generating optional UEFI-mode Limine.CONF...)\n";
-					LimineCFGMake(drv_let); // ensures we don't leave the LiveCD's Limine.CFG on the HDD
+					LimineCFGMake(drv_let); // ensures we don't leave the LiveCD's Limine.CONF on the HDD
 				}
 				else
 				{

src/System/Boot/LimineMHDIns.ZC

@@ -13,18 +13,18 @@ U8 binary_limine_hdd_bin_data[0];
 
 Bool LimineCFGMake(U8 drv_let)
 {
-	U8		*filename_cfg = MStrPrint("%C:/Boot/Limine.CFG", drv_let);
+	U8		*filename_cfg = MStrPrint("%C:/Boot/Limine.CONF", drv_let);
 	CDoc	*doc = DocNew(filename_cfg);
 	CDrive	*drive;
 	CBlkDev	*bd;
 	I64		 i;
 	U8		*filename_sys, *filename_elf, *filename_zxe, *st;
 
-	"\nGenerating Limine.CFG ...\n";
+	"\nGenerating Limine.CONF ...\n";
 
 	DocPrint(doc,
-		"TIMEOUT=2\n"
+		"timeout: 2\n"
-		"INTERFACE_RESOLUTION=1024x768\n\n");
+		"interface_resolution: 1024x768\n\n");
 
 	"Searching drives for Limine bootloader files ...\n";
 	for (i = 0, drive = blkdev.drvs; i < DRIVES_NUM; i++, drive++)
@@ -39,15 +39,15 @@ Bool LimineCFGMake(U8 drv_let)
 			filename_zxe = MStrPrint("%C:/Boot/Kernel.ZXE", drv_let);
 			if (FileFind(filename_sys) && FileFind(filename_elf) && FileFind(filename_zxe))
 			{
-				st = MStrPrint(":ZealOS %C:/\n"
+				st = MStrPrint("/ZealOS %C:/\n"
-					"PROTOCOL=limine\n"
+					"protocol: limine\n"
-					"RESOLUTION=1024x768\n"
+					"resolution: 1024x768\n"
-					"KERNEL_PATH=boot://%d/Boot/ZealBooter.ELF\n"
+					"kernel_path: boot(%d):/Boot/ZealBooter.ELF\n"
-					"MODULE_PATH=boot://%d/Boot/Kernel.ZXE\n"
+					"module_path: boot(%d):/Boot/Kernel.ZXE\n"
 					"\n", drv_let, drive->prt_num + 1, drive->prt_num + 1);
 
 				DocPrint(doc, st);
-				"%C:/ drive added as a Limine.CFG menu entry.\n", drv_let;
+				"%C:/ drive added as a Limine.CONF menu entry.\n", drv_let;
 			}
 			else
 				"%C:/ drive is missing Limine bootloader files.\n", drv_let;
@@ -56,9 +56,9 @@ Bool LimineCFGMake(U8 drv_let)
 	DocWrite(doc);
 	DocDel(doc);
 
-	"/Boot/Limine.CFG generated.\n";
+	"/Boot/Limine.CONF generated.\n";
 
-	"Copying Limine.CFG to all other drives ...\n";
+	"Copying Limine.CONF to all other drives ...\n";
 	for (i = 0, drive = blkdev.drvs; i < DRIVES_NUM; i++, drive++)
 	{
 		if (drive->drive_signature == DRIVE_SIGNATURE_VAL && drive->fs_type == FSt_FAT32 && DriveIsWritable(drive->drv_let))
@@ -66,7 +66,7 @@ Bool LimineCFGMake(U8 drv_let)
 			drv_let = Drive2Letter(drive);
 			if (FileFind(filename_sys) && FileFind(filename_elf) && FileFind(filename_zxe))
 			{
-				st = MStrPrint("%C:/Boot/Limine.CFG", drv_let);
+				st = MStrPrint("%C:/Boot/Limine.CONF", drv_let);
 				Copy(filename_cfg, st);
 			}
 		}

zealbooter/GNUmakefile

@@ -1,9 +1,9 @@
 # Nuke built-in rules and variables.
 override MAKEFLAGS += -rR
 
-# This is the name that our final kernel executable will have.
+# This is the name that our final executable will have.
 # Change as needed.
-override KERNEL := kernel
+override OUTPUT := kernel
 
 # Convenience macro to reliably declare user overridable variables.
 define DEFAULT_VAR =
@@ -15,34 +15,32 @@ define DEFAULT_VAR =
     endif
 endef
 
-# It is suggested to use a custom built cross toolchain to build a kernel.
+# User controllable C compiler command.
-# We are using the standard "cc" here, it may work by using
+override DEFAULT_KCC := cc
-# the host system's toolchain, but this is not guaranteed.
+$(eval $(call DEFAULT_VAR,KCC,$(DEFAULT_KCC)))
-override DEFAULT_CC := cc
-$(eval $(call DEFAULT_VAR,CC,$(DEFAULT_CC)))
 
-# Same thing for "ld" (the linker).
+# User controllable linker command.
-override DEFAULT_LD := ld
+override DEFAULT_KLD := ld
-$(eval $(call DEFAULT_VAR,LD,$(DEFAULT_LD)))
+$(eval $(call DEFAULT_VAR,KLD,$(DEFAULT_KLD)))
 
 # User controllable C flags.
-override DEFAULT_CFLAGS := -g -O2 -pipe
+override DEFAULT_KCFLAGS := -g -O2 -pipe
-$(eval $(call DEFAULT_VAR,CFLAGS,$(DEFAULT_CFLAGS)))
+$(eval $(call DEFAULT_VAR,KCFLAGS,$(DEFAULT_KCFLAGS)))
 
 # User controllable C preprocessor flags. We set none by default.
-override DEFAULT_CPPFLAGS :=
+override DEFAULT_KCPPFLAGS :=
-$(eval $(call DEFAULT_VAR,CPPFLAGS,$(DEFAULT_CPPFLAGS)))
+$(eval $(call DEFAULT_VAR,KCPPFLAGS,$(DEFAULT_KCPPFLAGS)))
 
 # User controllable nasm flags.
-override DEFAULT_NASMFLAGS := -F dwarf -g
+override DEFAULT_KNASMFLAGS := -F dwarf -g
-$(eval $(call DEFAULT_VAR,NASMFLAGS,$(DEFAULT_NASMFLAGS)))
+$(eval $(call DEFAULT_VAR,KNASMFLAGS,$(DEFAULT_KNASMFLAGS)))
 
 # User controllable linker flags. We set none by default.
-override DEFAULT_LDFLAGS :=
+override DEFAULT_KLDFLAGS :=
-$(eval $(call DEFAULT_VAR,LDFLAGS,$(DEFAULT_LDFLAGS)))
+$(eval $(call DEFAULT_VAR,KLDFLAGS,$(DEFAULT_KLDFLAGS)))
 
 # Internal C flags that should not be changed by the user.
-override CFLAGS += \
+override KCFLAGS += \
     -Wall \
     -Wextra \
     -std=gnu11 \
@@ -50,8 +48,9 @@ override CFLAGS += \
     -fno-stack-protector \
     -fno-stack-check \
     -fno-lto \
-    -fno-PIE \
     -fno-PIC \
+    -ffunction-sections \
+    -fdata-sections \
     -m64 \
     -march=x86-64 \
     -mno-80387 \
@@ -62,50 +61,46 @@ override CFLAGS += \
     -mcmodel=kernel
 
 # Internal C preprocessor flags that should not be changed by the user.
-override CPPFLAGS := \
+override KCPPFLAGS := \
     -I src \
     -I src/lib \
-    $(CPPFLAGS) \
+    $(KCPPFLAGS) \
     -MMD \
     -MP
 
+# Internal nasm flags that should not be changed by the user.
+override KNASMFLAGS += \
+    -Wall \
+    -f elf64
+
 # Internal linker flags that should not be changed by the user.
-override LDFLAGS += \
+override KLDFLAGS += \
     -m elf_x86_64 \
     -nostdlib \
     -static \
     -z max-page-size=0x1000 \
+    -gc-sections \
     -T linker.ld
 
-# Check if the linker supports -no-pie and enable it if it does.
-ifeq ($(shell $(LD) --help 2>&1 | grep 'no-pie' >/dev/null 2>&1; echo $$?),0)
-    override LDFLAGS += -no-pie
-endif
-
-# Internal nasm flags that should not be changed by the user.
-override NASMFLAGS += \
-    -Wall \
-    -f elf64
-
 # Use "find" to glob all *.c, *.S, and *.asm files in the tree and obtain the
 # object and header dependency file names.
-override CFILES := $(shell cd src && find -L . -type f -name '*.c')
+override CFILES := $(shell cd src && find -L * -type f -name '*.c' | LC_ALL=C sort)
-override ASFILES := $(shell cd src && find -L . -type f -name '*.S')
+override ASFILES := $(shell cd src && find -L * -type f -name '*.S' | LC_ALL=C sort)
-override NASMFILES := $(shell cd src && find -L . -type f -name '*.asm')
+override NASMFILES := $(shell cd src && find -L * -type f -name '*.asm' | LC_ALL=C sort)
 override OBJ := $(addprefix obj/,$(CFILES:.c=.c.o) $(ASFILES:.S=.S.o) $(NASMFILES:.asm=.asm.o))
 override HEADER_DEPS := $(addprefix obj/,$(CFILES:.c=.c.d) $(ASFILES:.S=.S.d))
 
 # Default target.
 .PHONY: all
-all: bin/$(KERNEL)
+all: bin/$(OUTPUT)
 
 src/limine.h:
 	curl -Lo $@ https://github.com/limine-bootloader/limine/raw/trunk/limine.h || cp ../build/limine/limine.h src/limine.h || echo "ERROR"
 
-# Link rules for the final kernel executable.
+# Link rules for the final executable.
-bin/$(KERNEL): GNUmakefile linker.ld $(OBJ)
+bin/$(OUTPUT): GNUmakefile linker.ld $(OBJ)
 	mkdir -p "$$(dirname $@)"
-	$(LD) $(OBJ) $(LDFLAGS) -o $@
+	$(KLD) $(OBJ) $(KLDFLAGS) -o $@
 
 # Include header dependencies.
 -include $(HEADER_DEPS)
@@ -113,17 +108,17 @@ bin/$(KERNEL): GNUmakefile linker.ld $(OBJ)
 # Compilation rules for *.c files.
 obj/%.c.o: src/%.c GNUmakefile src/limine.h
 	mkdir -p "$$(dirname $@)"
-	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
+	$(KCC) $(KCFLAGS) $(KCPPFLAGS) -c $< -o $@
 
 # Compilation rules for *.S files.
 obj/%.S.o: src/%.S GNUmakefile src/limine.h
 	mkdir -p "$$(dirname $@)"
-	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
+	$(KCC) $(KCFLAGS) $(KCPPFLAGS) -c $< -o $@
 
 # Compilation rules for *.asm (nasm) files.
 obj/%.asm.o: src/%.asm GNUmakefile
 	mkdir -p "$$(dirname $@)"
-	nasm $(NASMFLAGS) $< -o $@
+	nasm $(KNASMFLAGS) $< -o $@
 
 # Remove object files and the final executable.
 .PHONY: clean

zealbooter/Limine.CFG

@@ -1,8 +0,0 @@
-TIMEOUT=2
-INTERFACE_RESOLUTION=1024x768
-
-:ZealOS LiveCD
-PROTOCOL=limine
-RESOLUTION=1024x768
-KERNEL_PATH=boot:///Boot/ZealBooter.ELF
-MODULE_PATH=boot:///Boot/Kernel.ZXE

zealbooter/limine.conf

@@ -0,0 +1,8 @@
+timeout: 2
+interface_resolution: 1024x768
+
+/ZealOS LiveCD
+    protocol: limine
+    resolution: 1024x768
+    kernel_path: boot():/Boot/ZealBooter.ELF
+    module_path: boot():/Boot/Kernel.ZXE

zealbooter/linker.ld

@@ -1,22 +1,22 @@
 /* Tell the linker that we want an x86_64 ELF64 output file */
 OUTPUT_FORMAT(elf64-x86-64)
-OUTPUT_ARCH(i386:x86-64)
 
-/* We want the symbol _start to be our entry point */
+/* We want the symbol kmain to be our entry point */
-ENTRY(_start)
+ENTRY(kmain)
 
 /* Define the program headers we want so the bootloader gives us the right */
-/* MMU permissions */
+/* MMU permissions; this also allows us to exert more control over the linking */
+/* process. */
 PHDRS
 {
-    text    PT_LOAD    FLAGS((1 << 0) | (1 << 2)) ; /* Execute + Read */
+    text    PT_LOAD;
-    rodata  PT_LOAD    FLAGS((1 << 2)) ;            /* Read only */
+    rodata  PT_LOAD;
-    data    PT_LOAD    FLAGS((1 << 1) | (1 << 2)) ; /* Write + Read */
+    data    PT_LOAD;
 }
 
 SECTIONS
 {
-    /* We wanna be placed in the topmost 2GiB of the address space, for optimisations */
+    /* We want to be placed in the topmost 2GiB of the address space, for optimisations */
     /* and because that is what the Limine spec mandates. */
     /* Any address in this region will do, but often 0xffffffff80000000 is chosen as */
     /* that is the beginning of the region. */
@@ -27,17 +27,23 @@ SECTIONS
     } :text
 
     /* Move to the next memory page for .rodata */
-    . += CONSTANT(MAXPAGESIZE);
+    . = ALIGN(CONSTANT(MAXPAGESIZE));
 
     .rodata : {
         *(.rodata .rodata.*)
     } :rodata
 
     /* Move to the next memory page for .data */
-    . += CONSTANT(MAXPAGESIZE);
+    . = ALIGN(CONSTANT(MAXPAGESIZE));
 
     .data : {
         *(.data .data.*)
+
+        /* Place the sections that contain the Limine requests as part of the .data */
+        /* output section. */
+        KEEP(*(.requests_start_marker))
+        KEEP(*(.requests))
+        KEEP(*(.requests_end_marker))
     } :data
 
     /* NOTE: .bss needs to be the last thing mapped to :data, otherwise lots of */
@@ -49,9 +55,9 @@ SECTIONS
         *(COMMON)
     } :data
 
-    /* Discard .note.* and .eh_frame since they may cause issues on some hosts. */
+    /* Discard .note.* and .eh_frame* since they may cause issues on some hosts. */
     /DISCARD/ : {
-        *(.eh_frame)
+        *(.eh_frame*)
         *(.note .note.*)
     }
 }

zealbooter/src/zealbooter.c

@@ -4,31 +4,43 @@
 #include <limine.h>
 #include <lib.h>
 
+__attribute__((used, section(".requests_start_marker")))
+static volatile LIMINE_REQUESTS_START_MARKER;
+
+__attribute__((used, section(".requests_end_marker")))
+static volatile LIMINE_REQUESTS_END_MARKER;
+
+__attribute__((used, section(".requests")))
 static volatile struct limine_module_request module_request = {
     .id = LIMINE_MODULE_REQUEST,
     .revision = 0
 };
 
+__attribute__((used, section(".requests")))
 static volatile struct limine_hhdm_request hhdm_request = {
     .id = LIMINE_HHDM_REQUEST,
     .revision = 0
 };
 
+__attribute__((used, section(".requests")))
 static volatile struct limine_memmap_request memmap_request = {
     .id = LIMINE_MEMMAP_REQUEST,
     .revision = 0
 };
 
+__attribute__((used, section(".requests")))
 static volatile struct limine_framebuffer_request framebuffer_request = {
     .id = LIMINE_FRAMEBUFFER_REQUEST,
     .revision = 0
 };
 
+__attribute__((used, section(".requests")))
 static volatile struct limine_smbios_request smbios_request = {
     .id = LIMINE_SMBIOS_REQUEST,
     .revision = 0
 };
 
+__attribute__((used, section(".requests")))
 static volatile struct limine_efi_system_table_request efi_request = {
     .id = LIMINE_EFI_SYSTEM_TABLE_REQUEST,
     .revision = 0
@@ -167,7 +179,7 @@ static struct E801 get_E801(void) {
     return E801;
 }
 
-void _start(void) {
+void kmain(void) {
     printf("ZealBooter prekernel\n");
     printf("____________________\n\n");