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#include <kernel/arch/amd64/3rdparty/multiboot2.h>
#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/tty/tty.h>
#include <kernel/arch/generic.h>
#include <kernel/mem/alloc.h>
#include <kernel/panic.h>
#include <kernel/proc.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 fb_info vid;
struct {
void *addr; size_t len;
} init;
tty_init();
kprintf("idt...");
idt_init();
kprintf("irq...");
irq_init();
{
kprintf("mem...\n");
struct multiboot_tag_basic_meminfo *meminfo;
meminfo = mbi_tag(mbi, MULTIBOOT_TAG_TYPE_BASIC_MEMINFO);
mem_init((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;
mem_reserve(vid.b, vid.size);
kprintf("framebuffer at 0x%x, %ux%u bpp %u\n", vid.b, vid.width, vid.height, vid.bpp);
}
{
struct multiboot_tag_module *mod;
mod = mbi_tag(mbi, MULTIBOOT_TAG_TYPE_MODULE);
init.addr = (void*)(long)mod->mod_start;
init.len = mod->mod_end - mod->mod_start;
mem_reserve(init.addr, init.len);
}
kprintf("rootfs...\n");
vfs_root_init();
ps2_init();
serial_init();
video_init(vid);
kprintf("ata...\n");
pata_init();
kprintf("running init...\n");
process_seed(init.addr, init.len);
process_switch_any();
}
void shutdown(void) {
kprintf("shutting off\n");
mem_debugprint();
cpu_shutdown();
}
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