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armv7: Use isb/dsb directly in start.S

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Toolchains which do not directly support using "isb" and "dsb" directly
are no longer functionally supported in U-Boot. Furthermore, clang has
for a long time warned about using the alternate form that we were.
Update the code.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Tom Rini 2023-04-05 19:48:55 -04:00
parent a27c8ea7f7
commit b5fc9f99d0
1 changed files with 4 additions and 4 deletions
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8
arch/arm/cpu/armv7/start.S
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@ -134,8 +134,8 @@ ENTRY(c_runtime_cpu_setup)
*/
#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
mcr p15, 0, r0, c7, c5, 0 @ invalidate icache
mcr p15, 0, r0, c7, c10, 4 @ DSB
mcr p15, 0, r0, c7, c5, 4 @ ISB
dsb
isb
#endif
bx lr
@ -188,8 +188,8 @@ ENTRY(cpu_init_cp15)
mcr p15, 0, r0, c8, c7, 0 @ invalidate TLBs
mcr p15, 0, r0, c7, c5, 0 @ invalidate icache
mcr p15, 0, r0, c7, c5, 6 @ invalidate BP array
mcr p15, 0, r0, c7, c10, 4 @ DSB
mcr p15, 0, r0, c7, c5, 4 @ ISB
dsb
isb
/*
* disable MMU stuff and caches