wip: enable vbe
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parent
4bd4198293
commit
fb1a1bc213
6
Makefile
6
Makefile
@ -31,7 +31,7 @@ $(NAME): $(OBJ)
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$(LD) $(LDFLAGS) -o build/$(NAME).bin $(OBJ) $(LIBS)
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run: $(NAME)
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qemu-system-i386 -kernel build/$(NAME).bin
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qemu-system-i386 -kernel build/$(NAME).bin -vga std
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iso: $(NAME)
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mkdir -p isodir/boot/grub
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@ -41,10 +41,10 @@ iso: $(NAME)
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rm -rf isodir
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run-iso: iso
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qemu-system-i386 -cdrom build/$(NAME).iso
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qemu-system-i386 -cdrom build/$(NAME).iso -vga std
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debug: iso
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qemu-system-i386 -s -S build/$(NAME).iso
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qemu-system-i386 -s -S build/$(NAME).iso -vga std
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clean:
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make -C libbozo clean
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@ -1,3 +1,6 @@
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menuentry "bozos" {
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set gfxmode=1024x768x32
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set gfxpayload=keep
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menuentry "bozOS" {
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multiboot /boot/bozOS.bin
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boot
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}
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24
src/boot.s
24
src/boot.s
@ -1,27 +1,17 @@
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# Declare constants for the multiboot header.
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.set ALIGN, 1<<0 # align loaded modules on page boundaries
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.set MEMINFO, 1<<1 # provide memory map
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.set MAGIC, 0xE85250D6 # 'magic number' lets bootloader find the header
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.set ARCHITECTURE, 0
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.set VIDEOMODE, 1<<2 # provide memory map
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.set FLAGS, ALIGN | MEMINFO | VIDEOMODE # this is the Multiboot 'flag' field
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.set MAGIC, 0x1BADB002 # 'magic number' lets bootloader find the header
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.set CHECKSUM, -(MAGIC + FLAGS) # checksum of above, to prove we are multiboot
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# Declare a multiboot header that marks the program as a kernel.
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.section .multiboot.data, "aw"
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header_start:
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# HEADER
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.align 4
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.long MAGIC
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.long ARCHITECTURE
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.long header_end - header_start
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.long 0x100000000 - (MAGIC + (header_end - header_start))
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#TAGS:
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# END TAG
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.align 8
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.int 0 # type
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.int 0 # flag
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.long 8 # size
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header_end:
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.long FLAGS
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.long CHECKSUM
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# Allocate the initial stack.
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.section .bootstrap_stack, "aw", @nobits
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70
src/kernel.c
70
src/kernel.c
@ -26,50 +26,6 @@
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#error "This tutorial needs to be compiled with a ix86-elf compiler"
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#endif
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/* Par contre je me dois d'être honnête avec toi, j'ai passé un très bon moment
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* hier soir c'était vraiment posé et tout mais j'ai pas trop ressenti de
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* feeling qui me donnerait envie de continuer dans une relation "couple" sur le
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* long terme. Je sais pas trop comment le dire sans que ça te blesse, c'est pas
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* personnel ou quoi c'est cool quand on parle et tout mais juste je ne pense
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* pas pouvoir faire marcher une relation comme celle là :( */
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/* Voilà je voulais juste te le dire pour pas que tu te mettes quelque chose en
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* tête qui n'arrivera pas, je trouve ça plus correct */
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static void set_mem_size(multiboot_info_t *mbd, uint32_t magic)
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{
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/* Make sure the magic number matches for memory mapping */
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if (magic != MULTIBOOT_BOOTLOADER_MAGIC)
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kpanic("invalid magic number!");
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/* Check bit 6 to see if we have a valid memory map */
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if (!(mbd->flags >> 6 & 0x1))
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kpanic("invalid memory map given by GRUB bootloader");
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/* Loop through the memory map and display the values */
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for (uint32_t i = 0; i < mbd->mmap_length;
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i += sizeof(multiboot_memory_map_t)) {
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multiboot_memory_map_t *mmmt =
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(multiboot_memory_map_t *)(mbd->mmap_addr + i);
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/* if (mmmt->type == MULTIBOOT_MEMORY_AVAILABLE) */
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/* mem_size += mmmt->len; */
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}
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}
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extern uint32_t boot_page_table1;
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void get_kernel_page_used(void)
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{
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uint32_t *boot_pt = &boot_page_table1;
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size_t i = 0;
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size_t used_pages = 0;
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for (; i < 1024; i++) {
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if ((boot_pt[i] != 0) && (boot_pt[i] != (i << 12))) {
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used_pages++;
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}
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}
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kprintf("page used: %d/%d\n", used_pages, PT_SIZE);
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}
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void kernel_main(multiboot_info_t *mbd, uint32_t magic)
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{
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terminal_initialize();
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@ -81,31 +37,5 @@ void kernel_main(multiboot_info_t *mbd, uint32_t magic)
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"I see no way to confuse an array of 256 seg:off pairs with a "
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"complex 8*unknown quantity -byte descriptor table. -- Troy "
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"Martin 03:50, 22 March 2009 (UTC)\n");
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// PRINT_PTR(alloc_frame());
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if (false) {
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void *start = alloc_pages(1);
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int *ptr;
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uint32_t i;
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for (i = 1; (ptr = alloc_pages(PAGE_SIZE)); i++) {
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memset(ptr, i % 256, PAGE_SIZE);
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*ptr = i;
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if (i == 4096 && 0)
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break;
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}
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PRINT_UINT(i); // 32573
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for (uint32_t j = 1; j < i - 1; j++) {
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ptr = start + j * PAGE_SIZE;
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for (uint32_t k = sizeof(*ptr);
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k < PAGE_SIZE - sizeof(*ptr); k++)
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if (((uint8_t *)ptr)[k] != (j % 256))
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kprintf("cringe %u != %u\n",
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((uint8_t *)ptr)[k], j % 256);
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}
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} else {
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while (vmalloc(10))
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;
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}
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/* vmalloc(10); */
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shell_init();
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}
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