diff options
Diffstat (limited to 'arch/avr32/kernel/head.S')
-rw-r--r-- | arch/avr32/kernel/head.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/avr32/kernel/head.S b/arch/avr32/kernel/head.S new file mode 100644 index 000000000000..773b7ad87be9 --- /dev/null +++ b/arch/avr32/kernel/head.S @@ -0,0 +1,45 @@ +/* + * Non-board-specific low-level startup code + * + * Copyright (C) 2004-2006 Atmel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/linkage.h> + +#include <asm/page.h> +#include <asm/thread_info.h> +#include <asm/sysreg.h> + + .section .init.text,"ax" + .global kernel_entry +kernel_entry: + /* Initialize status register */ + lddpc r0, init_sr + mtsr SYSREG_SR, r0 + + /* Set initial stack pointer */ + lddpc sp, stack_addr + sub sp, -THREAD_SIZE + +#ifdef CONFIG_FRAME_POINTER + /* Mark last stack frame */ + mov lr, 0 + mov r7, 0 +#endif + + /* Set up the PIO, SDRAM controller, early printk, etc. */ + rcall board_early_init + + /* Start the show */ + lddpc pc, kernel_start_addr + + .align 2 +init_sr: + .long 0x007f0000 /* Supervisor mode, everything masked */ +stack_addr: + .long init_thread_union +kernel_start_addr: + .long start_kernel |