linux-kernel - [PATCHv2 5/8] ARM: EXYNOS: Support secondary CPU boot of Exynos3250

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Message-id: <1397527192-21988-6-git-send-email-cw00.choi@samsung.com>
Date:	Tue, 15 Apr 2014 10:59:49 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux@....linux.org.uk, ben-linux@...ff.org, kgene.kim@...sung.com,
	t.figa@...sung.com, thomas.abraham@...aro.org,
	kyungmin.park@...sung.com, cw00.choi@...sung.com,
	sw0312.kim@...sung.com, hyunhee.kim@...sung.com,
	yj44.cho@...sung.com, chanho61.park@...sung.com, arnd@...db.de,
	olof@...om.net, marc.zyngier@....com,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Subject: [PATCHv2 5/8] ARM: EXYNOS: Support secondary CPU boot of Exynos3250

This patch fix the offset of CPU boot address and don't operate smc call
of SMC_CMD_CPU1BOOT command for Exynos3250.

Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
---
 arch/arm/mach-exynos/firmware.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
index aa01c42..6205d4f 100644
--- a/arch/arm/mach-exynos/firmware.c
+++ b/arch/arm/mach-exynos/firmware.c
@@ -30,13 +30,16 @@ static int exynos_do_idle(void)
 
 static int exynos_cpu_boot(int cpu)
 {
+	if (soc_is_exynos3250()) {
+		return 0;
 	/*
 	 * The second parameter of SMC_CMD_CPU1BOOT command means CPU id.
 	 * But, Exynos4212 has only one secondary CPU so second parameter
 	 * isn't used for informing secure firmware about CPU id.
 	 */
-	if (soc_is_exynos4212())
+	} else if (soc_is_exynos4212()) {
 		cpu = 0;
+	}
 
 	exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
 	return 0;
@@ -46,7 +49,7 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
 {
 	void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c;
 
-	if (!soc_is_exynos4212())
+	if (!soc_is_exynos4212() && !soc_is_exynos3250())
 		boot_reg += 4*cpu;
 
 	__raw_writel(boot_addr, boot_reg);
-- 
1.8.0

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