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Tue, 03 Jun 2014 14:39:41 +0900 (KST) From: Chanwoo Choi To: linux@arm.linux.org.uk, kgene.kim@samsung.com, t.figa@samsung.com Subject: [PATCH] ARM: EXYNOS: Fix the sequence of secondary CPU boot for Exynos3250 Date: Tue, 03 Jun 2014 14:39:32 +0900 Message-id: <1401773972-13689-1-git-send-email-cw00.choi@samsung.com> X-Mailer: git-send-email 1.8.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrDLMWRmVeSWpSXmKPExsWyRsSkQHdefG+wwa4fLBbXvzxntehdcJXN 4mzTG3aLTY+vsVpc3jWHzWLG+X1MFrcv81qsn/GaxYHDo6W5h81j85J6j74tqxg9Pm+SC2CJ 4rJJSc3JLEst0rdL4MrobbctaBCrOHvjDlsD4wahLkZODgkBE4lTHy6wQ9hiEhfurWfrYuTi EBJYyiixc805Jpii9rm3WCASixglPu7dCVXVxCSxpvsiK0gVm4CWxP4XN9hAbBEBV4llR1aA dTALrGOU+PyrkREkISwQKjF9/2ygBAcHi4CqxPrWaJAwL1D9usvTWCG2yUl82POIHaRXQuA/ m8Slm4eZQRIsAgIS3yYfAuuVEJCV2HSAGaJeUuLgihssExgFFzAyrGIUTS1ILihOSi8y0itO zC0uzUvXS87P3cQIDNnT/5717WC8ecD6EGMy0LiJzFKiyfnAkM8riTc0NjOyMDUxNTYytzQj TVhJnHfRw6QgIYH0xJLU7NTUgtSi+KLSnNTiQ4xMHJxSDYwr+MP4BU9KMBzV9QzLrFl1+sHT +CWlpQ/Wma0V/332wbE8x6vnl35eJcZjnhl0/8OGN5Mf5ljdCX+789k9Sba6VzcKtjMeftn/ 3uLTtE+RB1giuFVPp3S2SPi4zAlg6j1f6Ghzpm5/UHne7pQNnArq4Yscq21071l5Z3RoKHcc yLlYGn9Dv0iJpTgj0VCLuag4EQCdgg2ybwIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrJIsWRmVeSWpSXmKPExsVy+t9jAd258b3BBrsmW1pc//Kc1aJ3wVU2 i7NNb9gtNj2+xmpxedccNosZ5/cxWdy+zGuxfsZrFgcOj5bmHjaPzUvqPfq2rGL0+LxJLoAl qoHRJiM1MSW1SCE1Lzk/JTMv3VbJOzjeOd7UzMBQ19DSwlxJIS8xN9VWycUnQNctMwfoCiWF ssScUqBQQGJxsZK+HaYJoSFuuhYwjRG6viFBcD1GBmggYQ1jRm+7bUGDWMXZG3fYGhg3CHUx cnJICJhItM+9xQJhi0lcuLeerYuRi0NIYBGjxMe9O6GcJiaJNd0XWUGq2AS0JPa/uMEGYosI uEosO7KCBaSIWWAdo8TnX42MIAlhgVCJ6ftnAyU4OFgEVCXWt0aDhHmB6tddnsYKsU1O4sOe R+wTGLkXMDKsYhRNLUguKE5KzzXUK07MLS7NS9dLzs/dxAiOiGdSOxhXNlgcYhTgYFTi4f2x tydYiDWxrLgy9xCjBAezkgivwTegEG9KYmVValF+fFFpTmrxIcZkoOUTmaVEk/OB0ZpXEm9o bGJmZGlkbmhhZGxOmrCSOO+BVutAIYH0xJLU7NTUgtQimC1MHJxSDYzs5U0vb8rvl5o6+9Vz pa7dm81t865daROr0VZrOZs8/W5q3KOa1/VWEXPlFLT2cu0XfVra4Me44Y+ozlLngm0z3+h/ 2thjKcSnZi4vvHTx353WTXeWvVILz/v5ZXdvU/MuhYnrHHdsuLtM/NX2VZ9+r7NT0PfL/yDD a/cu4JL9dofkhxcnRpYrsRRnJBpqMRcVJwIA3GpTzswCAAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140602_224006_103155_19FD8090 X-CRM114-Status: GOOD ( 12.92 ) X-Spam-Score: -5.7 (-----) Cc: Chanwoo Choi , kyungmin.park@samsung.com, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch set AUTOWAKEUP_EN bit to ARM_CORE_CONFIGURATION register because Exynos3250 removes WFE in secure mode so that turn on automatically after setting CORE_LOCAL_PWR_EN. Also, This patch use dbs_sev() macro to guarantee the data synchronization of command instead of IPI_WAKEUP because Exynos3250 don't have WFE mode in secue mode. Signed-off-by: Chanwoo Choi Acked-by: Kyungmin Park --- arch/arm/mach-exynos/platsmp.c | 9 ++++++++- arch/arm/mach-exynos/pm.c | 8 ++++++-- arch/arm/mach-exynos/regs-pmu.h | 4 ++++ 3 files changed, 18 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c index ec02422..882fb84 100644 --- a/arch/arm/mach-exynos/platsmp.c +++ b/arch/arm/mach-exynos/platsmp.c @@ -149,6 +149,10 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) return -ETIMEDOUT; } } + + if (soc_is_exynos3250()) + __raw_writel(EXYNOS3_COREPORESET(phys_cpu), EXYNOS_SWRESET); + /* * Send the secondary CPU a soft interrupt, thereby causing * the boot monitor to read the system wide flags register, @@ -182,7 +186,10 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) call_firmware_op(cpu_boot, phys_cpu); - arch_send_wakeup_ipi_mask(cpumask_of(cpu)); + if (soc_is_exynos3250()) + dsb_sev(); + else + arch_send_wakeup_ipi_mask(cpumask_of(cpu)); if (pen_release == -1) break; diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c index 87c0d34..4681f64 100644 --- a/arch/arm/mach-exynos/pm.c +++ b/arch/arm/mach-exynos/pm.c @@ -121,8 +121,12 @@ void exynos_cpu_power_down(int cpu) */ void exynos_cpu_power_up(int cpu) { - __raw_writel(S5P_CORE_LOCAL_PWR_EN, - EXYNOS_ARM_CORE_CONFIGURATION(cpu)); + u32 core_conf = 0; + + core_conf |= S5P_CORE_LOCAL_PWR_EN; + if (soc_is_exynos3250()) + core_conf |= S5P_CORE_AUTOWAKEUP_EN; + __raw_writel(core_conf, EXYNOS_ARM_CORE_CONFIGURATION(cpu)); } /** diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h index 1d13b08..674dfc2 100644 --- a/arch/arm/mach-exynos/regs-pmu.h +++ b/arch/arm/mach-exynos/regs-pmu.h @@ -128,6 +128,7 @@ #define S5P_CORE_LOCAL_PWR_EN 0x3 #define S5P_INT_LOCAL_PWR_EN 0x7 +#define S5P_CORE_AUTOWAKEUP_EN (1 << 31) /* Only for EXYNOS4210 */ #define S5P_CMU_CLKSTOP_LCD1_LOWPWR S5P_PMUREG(0x1154) @@ -186,6 +187,9 @@ #define S5P_DIS_IRQ_CORE3 S5P_PMUREG(0x1034) #define S5P_DIS_IRQ_CENTRAL3 S5P_PMUREG(0x1038) +/* For EXYNOS3 */ +#define EXYNOS3_COREPORESET(cpu) ((1 << 4) << cpu) + /* For EXYNOS5 */ #define EXYNOS5_SYS_I2C_CFG S5P_SYSREG(0x0234)