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authorPaul Mundt <lethal@linux-sh.org>2007-11-10 20:35:53 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-01-28 13:18:44 +0900
commit959f7d587e236a2d218f527771f156c336409d11 (patch)
tree9cbc0ec58d072dc58c04e91488a8013518582af4 /arch/sh/kernel/head.S
parent256b22ca66987c537064dc25b0b267966189b5ba (diff)
sh: Move over the SH-5 head.S and tlb.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/head.S')
-rw-r--r--arch/sh/kernel/head.S120
1 files changed, 0 insertions, 120 deletions
diff --git a/arch/sh/kernel/head.S b/arch/sh/kernel/head.S
deleted file mode 100644
index 3338239717f..00000000000
--- a/arch/sh/kernel/head.S
+++ /dev/null
@@ -1,120 +0,0 @@
-/* $Id: head.S,v 1.7 2003/09/01 17:58:19 lethal Exp $
- *
- * arch/sh/kernel/head.S
- *
- * Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Head.S contains the SH exception handlers and startup code.
- */
-#include <linux/linkage.h>
-#include <asm/thread_info.h>
-
-#ifdef CONFIG_CPU_SH4A
-#define SYNCO() synco
-
-#define PREFI(label, reg) \
- mov.l label, reg; \
- prefi @reg
-#else
-#define SYNCO()
-#define PREFI(label, reg)
-#endif
-
- .section .empty_zero_page, "aw"
-ENTRY(empty_zero_page)
- .long 1 /* MOUNT_ROOT_RDONLY */
- .long 0 /* RAMDISK_FLAGS */
- .long 0x0200 /* ORIG_ROOT_DEV */
- .long 1 /* LOADER_TYPE */
- .long 0x00360000 /* INITRD_START */
- .long 0x000a0000 /* INITRD_SIZE */
- .long 0
-1:
- .skip PAGE_SIZE - empty_zero_page - 1b
-
- .section .text.head, "ax"
-
-/*
- * Condition at the entry of _stext:
- *
- * BSC has already been initialized.
- * INTC may or may not be initialized.
- * VBR may or may not be initialized.
- * MMU may or may not be initialized.
- * Cache may or may not be initialized.
- * Hardware (including on-chip modules) may or may not be initialized.
- *
- */
-ENTRY(_stext)
- ! Initialize Status Register
- mov.l 1f, r0 ! MD=1, RB=0, BL=0, IMASK=0xF
- ldc r0, sr
- ! Initialize global interrupt mask
-#ifdef CONFIG_CPU_HAS_SR_RB
- mov #0, r0
- ldc r0, r6_bank
-#endif
-
- /*
- * Prefetch if possible to reduce cache miss penalty.
- *
- * We do this early on for SH-4A as a micro-optimization,
- * as later on we will have speculative execution enabled
- * and this will become less of an issue.
- */
- PREFI(5f, r0)
- PREFI(6f, r0)
-
- !
- mov.l 2f, r0
- mov r0, r15 ! Set initial r15 (stack pointer)
-#ifdef CONFIG_CPU_HAS_SR_RB
- mov.l 7f, r0
- ldc r0, r7_bank ! ... and initial thread_info
-#endif
-
- ! Clear BSS area
-#ifdef CONFIG_SMP
- mov.l 3f, r0
- cmp/eq #0, r0 ! skip clear if set to zero
- bt 10f
-#endif
-
- mov.l 3f, r1
- add #4, r1
- mov.l 4f, r2
- mov #0, r0
-9: cmp/hs r2, r1
- bf/s 9b ! while (r1 < r2)
- mov.l r0,@-r2
-
-10:
- ! Additional CPU initialization
- mov.l 6f, r0
- jsr @r0
- nop
-
- SYNCO() ! Wait for pending instructions..
-
- ! Start kernel
- mov.l 5f, r0
- jmp @r0
- nop
-
- .balign 4
-#if defined(CONFIG_CPU_SH2)
-1: .long 0x000000F0 ! IMASK=0xF
-#else
-1: .long 0x400080F0 ! MD=1, RB=0, BL=0, FD=1, IMASK=0xF
-#endif
-ENTRY(stack_start)
-2: .long init_thread_union+THREAD_SIZE
-3: .long __bss_start
-4: .long _end
-5: .long start_kernel
-6: .long sh_cpu_init
-7: .long init_thread_union