From 5cb5188112476b82af1e9f0a8f61866becca31e0 Mon Sep 17 00:00:00 2001
From: Jonas Gunz <himself@jonasgunz.de>
Date: Mon, 8 Apr 2019 18:24:00 +0200
Subject: Initial commit

---
 .gitignore    |   4 ++++
 init/Makefile |  17 +++++++++++++++++
 init/init.c   |  13 +++++++++++++
 init/init.o   | Bin 0 -> 1672 bytes
 packroot.sh   |   5 +++++
 start.sh      |   4 ++++
 6 files changed, 43 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 init/Makefile
 create mode 100644 init/init.c
 create mode 100644 init/init.o
 create mode 100755 packroot.sh
 create mode 100755 start.sh

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1978fd3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+bzImage
+initramfs*
+*.elf
+root/*
diff --git a/init/Makefile b/init/Makefile
new file mode 100644
index 0000000..53a64ea
--- /dev/null
+++ b/init/Makefile
@@ -0,0 +1,17 @@
+CC = gcc
+CFLAGS =
+LDFLAGS = --static
+OUTPUT = init.elf
+
+SRC = init.c
+
+build: init.o
+	$(CC) $(CFLAGS) $(SRC) $(LDFLAGS) -o $(OUTPUT)
+
+.PHONY: copy clean
+
+clean:
+	rm -df $(OUTPUT)
+
+copy:
+	objcopy -O binary $(OUTPUT) ../root/init
diff --git a/init/init.c b/init/init.c
new file mode 100644
index 0000000..00836b5
--- /dev/null
+++ b/init/init.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int main(int argc, char* argv[])
+{
+	printf("I'm a kernel!\r\n");
+
+	while(1)
+	{
+		printf("Still running!\r\n");
+		sleep(1);
+	}
+}
diff --git a/init/init.o b/init/init.o
new file mode 100644
index 0000000..6a8fc22
Binary files /dev/null and b/init/init.o differ
diff --git a/packroot.sh b/packroot.sh
new file mode 100755
index 0000000..b9a6572
--- /dev/null
+++ b/packroot.sh
@@ -0,0 +1,5 @@
+#!/bin/bash	
+
+cd root
+find . -print -depth | cpio -ov -H newc > ../initramfs.cpio.gz
+
diff --git a/start.sh b/start.sh
new file mode 100755
index 0000000..f26c99b
--- /dev/null
+++ b/start.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+screen qemu-system-x86_64 -nographic -no-reboot -kernel bzImage -initrd initramfs.cpio.gz -m 256M -append "console=ttyS0 panic=1"
+
-- 
cgit v1.2.3