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ARM: 8327/1: zImage: add support for ARMv7-M

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This patch makes it possible to enter zImage in Thumb mode for ARMv7-M
(Cortex-M) CPUs that do not support ARM mode. The kernel entry is also
made in Thumb mode.

[ukl: fix spelling in commit log, return early in call_cache_fn]

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Tested-by: Stefan Agner <stefan@agner.ch>
Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Joachim Eastwood
2015-03-25 08:47:18 +01:00
committed by Russell King
parent a092aedb81
commit c20611df13
2 changed files with 35 additions and 6 deletions
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8
arch/arm/include/asm/unified.h
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@@ -24,6 +24,14 @@
.syntax unified
#endif
#ifdef CONFIG_CPU_V7M
#define AR_CLASS(x...)
#define M_CLASS(x...) x
#else
#define AR_CLASS(x...) x
#define M_CLASS(x...)
#endif
#ifdef CONFIG_THUMB2_KERNEL
#if __GNUC__ < 4