linux-kernel - [PATCH 04/27] ARM: EXYNOS: Support secondary CPU boot of Exynos4212

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Date:	Thu, 10 Apr 2014 18:28:21 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	kgene.kim@...sung.com, t.figa@...sung.com,
	linux-samsung-soc@...r.kernel.org
Cc:	kyungmin.park@...sung.com, cw00.choi@...sung.com,
	inki.dae@...sung.com, sw0312.kim@...sung.com,
	hyunhee.kim@...sung.com, yj44.cho@...sung.com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 04/27] ARM: EXYNOS: Support secondary CPU boot of Exynos4212

From: Kyungmin Park <kyungmin.park@...sung.com>

This patch fix the offset of CPU boot address and change parameter of smc call
of SMC_CMD_CPU1BOOT command for Exynos4212.

Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
---
 arch/arm/mach-exynos/firmware.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
index 932129e..91a911d 100644
--- a/arch/arm/mach-exynos/firmware.c
+++ b/arch/arm/mach-exynos/firmware.c
@@ -18,6 +18,8 @@
 
 #include <mach/map.h>
 
+#include <plat/cpu.h>
+
 #include "smc.h"
 
 static int exynos_do_idle(void)
@@ -28,14 +30,22 @@ static int exynos_do_idle(void)
 
 static int exynos_cpu_boot(int cpu)
 {
-	exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
+	if (soc_is_exynos4212())
+		exynos_smc(SMC_CMD_CPU1BOOT, 0, 0, 0);
+	else
+		exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
 	return 0;
 }
 
 static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
 {
-	void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c + 4*cpu;
+	void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c;
 
+	if (soc_is_exynos4212())
+		goto out;
+	else
+		boot_reg += 4*cpu;
+out:
 	__raw_writel(boot_addr, boot_reg);
 	return 0;
 }
-- 
1.8.0

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