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#include <kernel/arch/amd64/boot.h>
#include <kernel/arch/amd64/driver/fsroot.h>
#include <kernel/arch/amd64/driver/pata.h>
#include <kernel/arch/amd64/driver/ps2.h>
#include <kernel/arch/amd64/driver/serial.h>
#include <kernel/arch/amd64/driver/video.h>
#include <kernel/arch/amd64/interrupts/idt.h>
#include <kernel/arch/amd64/interrupts/irq.h>
#include <kernel/arch/amd64/3rdparty/multiboot2.h>
#include <kernel/arch/amd64/tty/tty.h>
#include <kernel/arch/generic.h>
#include <kernel/main.h>
#include <kernel/mem/alloc.h>
#include <kernel/panic.h>
static void *mbi_tag(void *mbi, uint32_t type) {
struct multiboot_tag *tag;
for (tag = mbi + 8;
tag->type != MULTIBOOT_TAG_TYPE_END;
tag = ((void*)tag) + ((tag->size + 7) & ~7))
{
if (tag->type == type)
return tag;
}
kprintf("bootloader didn't pass required tag type %u\n", type);
panic_invalid_state();
}
void kmain_early(void *mbi) {
struct kmain_info info;
struct fb_info vid;
tty_init();
kprintf("idt...");
idt_init();
kprintf("irq...");
irq_init();
struct multiboot_tag_basic_meminfo *meminfo;
meminfo = mbi_tag(mbi, MULTIBOOT_TAG_TYPE_BASIC_MEMINFO);
info.memtop = (void*)(long)(meminfo->mem_upper * 1024);
struct multiboot_tag_framebuffer *framebuf;
framebuf = mbi_tag(mbi, MULTIBOOT_TAG_TYPE_FRAMEBUFFER);
vid.b = (void*)framebuf->common.framebuffer_addr;
vid.pitch = framebuf->common.framebuffer_pitch;
vid.width = framebuf->common.framebuffer_width;
vid.height = framebuf->common.framebuffer_height;
vid.bpp = framebuf->common.framebuffer_bpp;
vid.size = vid.pitch * vid.height;
// TODO framebuffer doesn't need to be part of kmain_info
info.fb.at = vid.b;
info.fb.size = vid.size;
struct multiboot_tag_module *init;
init = mbi_tag(mbi, MULTIBOOT_TAG_TYPE_MODULE);
info.init.at = (void*)(long)init->mod_start;
info.init.size = init->mod_end - init->mod_start;
kprintf("mem...\n");
mem_init(&info);
kprintf("rootfs...\n");
vfs_root_init();
ps2_init();
serial_init();
kprintf("ata...\n");
pata_init();
kprintf("kernel %8x -> %8x\n", 0, &_bss_end);
kprintf("init %8x -> %8x\n", info.init.at, info.init.at + info.init.size);
kprintf("video %8x -> %8x\n", vid.b, vid.b + vid.size);
kprintf("limit %8x\n", info.memtop);
kprintf("framebuffer at 0x%x, %ux%u bpp %u\n", vid.b, vid.width, vid.height, vid.bpp);
video_init(vid);
kmain(info);
}
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