From: Wang Dongsheng <dongsheng.w...@freescale.com>
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.w...@freescale.com>
diff --git a/arch/arm/cpu/armv7/ls102xa/cpu.c b/arch/arm/cpu/armv7/ls102xa/cpu.c
index 75f0d8c..1f82893 100644
--- 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
--
2.1.0.27.g96db324
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