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| author | Hyok S. Choi <hyok.choi@samsung.com> | 2006-01-13 21:05:25 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-01-13 21:05:25 (GMT) |
| commit | afeb90ca08000cbd75f22836e667f368e25fe3ac (patch) | |
| tree | f9c3b5c842f8db8dc188185b65a0cae311175c47 | |
| parent | e72b04756f16e40dfd6dab3da81e03fe6dfe16e6 (diff) | |
| download | linux-fsl-qoriq-afeb90ca08000cbd75f22836e667f368e25fe3ac.tar.xz | |
[ARM] Support register switch in nommu mode
This patch adds register switch support in nommu mode.
Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index a52baed..fb8e7f4 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -3,6 +3,7 @@ * * Copyright (C) 1996,1997,1998 Russell King. * ARM700 fix by Matthew Godbolt (linux-user@willothewisp.demon.co.uk) + * nommu support by Hyok S. Choi (hyok.choi@samsung.com) * * 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 @@ -538,7 +539,11 @@ ENTRY(__switch_to) add ip, r1, #TI_CPU_SAVE ldr r3, [r2, #TI_TP_VALUE] stmia ip!, {r4 - sl, fp, sp, lr} @ Store most regs on stack +#ifndef CONFIG_MMU + add r2, r2, #TI_CPU_DOMAIN +#else ldr r6, [r2, #TI_CPU_DOMAIN]! +#endif #if __LINUX_ARM_ARCH__ >= 6 #ifdef CONFIG_CPU_MPCORE clrex @@ -556,7 +561,9 @@ ENTRY(__switch_to) mov r4, #0xffff0fff str r3, [r4, #-15] @ TLS val at 0xffff0ff0 #endif +#ifdef CONFIG_MMU mcr p15, 0, r6, c3, c0, 0 @ Set domain register +#endif #ifdef CONFIG_VFP @ Always disable VFP so we can lazily save/restore the old @ state. This occurs in the context of the previous thread. |