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armv7/ls102xa: Fix non-boot cpus cannot correctly fall in spin table

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Bootrom will put cpus into WFE state when boot cpu release cpus, so
target cpu cannot correctly go to spin state.

Add 'sev' to wakeup non-boot cpu that hold on bootrom space, let target
cpu can fall into u-boot spin table.

Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Wang Dongsheng 2015-06-18 18:32:58 +08:00 • committed by York Sun
parent 933db81c04
commit 6f0586e692
1 changed files with 8 additions and 0 deletions
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8
arch/arm/cpu/armv7/ls102xa/cpu.c
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@ -344,5 +344,13 @@ void smp_kick_all_cpus(void)
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
out_be32(&gur->brrl, 0x2);
/*
* LS1 STANDBYWFE is not captured outside the ARM module in the soc.
* So add a delay to wait bootrom execute WFE.
*/
udelay(1);
asm volatile("sev");
}
#endif