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

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>

diff --git a/arch/arm/cpu/armv7/ls102xa/cpu.c b/arch/arm/cpu/armv7/ls102xa/cpu.c
index 75f0d8c7f794a1a6c6ad9e1d6a10fc9675581c54..8dd95d98791d763789f530d393a12563aa358282 100644 (file)
--- a/arch/arm/cpu/armv7/ls102xa/cpu.c
+++ b/arch/arm/cpu/armv7/ls102xa/cpu.c
@@ -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