From 912d2e3c7eb1baa71dda2c0a28aa5809eaa96f27 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 16 Jul 2022 13:33:00 +0200
Subject: amd64: barely boot into kernel code

---
 src/kernel/arch/amd64/boot.c | 51 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 src/kernel/arch/amd64/boot.c

(limited to 'src/kernel/arch/amd64/boot.c')

diff --git a/src/kernel/arch/amd64/boot.c b/src/kernel/arch/amd64/boot.c
new file mode 100644
index 0000000..0e61ed3
--- /dev/null
+++ b/src/kernel/arch/amd64/boot.c
@@ -0,0 +1,51 @@
+#include <kernel/arch/generic.h>
+#include <kernel/arch/amd64/32/gdt.h>
+#include <kernel/arch/amd64/ata.h>
+#include <kernel/arch/amd64/boot.h>
+#include <kernel/arch/amd64/driver/fsroot.h>
+#include <kernel/arch/amd64/driver/ps2.h>
+#include <kernel/arch/amd64/driver/serial.h>
+#include <kernel/arch/amd64/interrupts/idt.h>
+#include <kernel/arch/amd64/interrupts/irq.h>
+#include <kernel/arch/amd64/multiboot.h>
+#include <kernel/arch/amd64/tty/tty.h>
+#include <kernel/main.h>
+#include <kernel/mem/alloc.h>
+#include <kernel/panic.h>
+
+static void find_init(struct multiboot_info *multiboot, struct kmain_info *info)
+{
+	struct multiboot_mod *module = (void*)multiboot->mods;
+	kprintf("mods count 0x%x", multiboot->mods_count);
+	if (multiboot->mods_count < 1) {
+		kprintf("can't find init! ");
+		panic_invalid_state();
+	}
+	info->init.at   = module->start;
+	info->init.size = module->end - module->start;
+}
+
+void kmain_early(struct multiboot_info *multiboot) {
+	struct kmain_info info;
+
+	tty_init();
+	kprintf("idt...");
+	idt_init();
+	kprintf("irq...");
+	irq_init();
+
+	info.memtop = (void*) (multiboot->mem_upper * 1024);
+	find_init(multiboot, &info);
+	kprintf("mem...\n");
+	mem_init(&info);
+
+	kprintf("rootfs...");
+	vfs_root_init();
+	ps2_init();
+	serial_init();
+
+	kprintf("ata...");
+	ata_init();
+
+	kmain(info);
+}
-- 
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