Hi Alison & Jason,
Could you ACK this patch?
Regards, -Dongsheng
-----Original Message----- From: Dongsheng Wang [mailto:dongsheng.wang@freescale.com] Sent: Thursday, June 18, 2015 6:33 PM To: Sun York-R58495 Cc: Jin Zhengxiong-R64188; Wang Huan-B18965; Zhao Chenhui-B35336; Zhang Zhuoyu- B46552; u-boot@lists.denx.de; Wang Dongsheng-B40534 Subject: [PATCH] arm/layerscape: Fix non-boot cpus cannot correctly fall in spin table
From: Wang Dongsheng dongsheng.wang@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.wang@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