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exynos: allow SPL to build in thumb mode

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Building peach-pi smdk5420 and peach-pit with thumb mode for SPL
ends-up in the following error:

Error: Thumb encoding does not support an immediate here -- `msr cpsr_c,#0x13|0xC0'

Use an intermediate register to be able to use thumb for exynos5 SPL.

Signed-off-by: Guillaume GARDET <guillaume.gardet@free.fr>

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Tom Rini <trini@konsulko.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Guillaume GARDET 2019-01-02 14:31:41 +01:00 committed by Minkyu Kang
parent c96d90367a
commit 2a195703d6
1 changed files with 2 additions and 1 deletions
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3
arch/arm/mach-exynos/include/mach/system.h
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@ -58,7 +58,8 @@ struct exynos5_sysreg {
/* Move 0xd3 value to CPSR register to enable SVC mode */
#define svc32_mode_en() __asm__ __volatile__ \
("@ I&F disable, Mode: 0x13 - SVC\n\t" \
"msr cpsr_c, #0x13|0xC0\n\t" : : )
"mov r0, #0x13|0xC0\n\t" \
"msr cpsr_c, r0\n\t" : : )
/* Set program counter with the given value */
#define set_pc(x) __asm__ __volatile__ ("mov pc, %0\n\t" : : "r"(x))