From: Lina Iyer <lina.iyer@linaro.org>
To: daniel.lezcano@linaro.org, khilman@linaro.org,
sboyd@codeaurora.org, galak@codeaurora.org,
linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: lorenzo.pieralisi@arm.com, msivasub@codeaurora.org,
devicetree@vger.kernel.org, Lina Iyer <lina.iyer@linaro.org>
Subject: [PATCH v9 1/9] qcom: scm: scm_set_warm_boot_addr() to set the warmboot address
Date: Fri, 24 Oct 2014 17:40:16 -0600 [thread overview]
Message-ID: <1414194024-55547-2-git-send-email-lina.iyer@linaro.org> (raw)
In-Reply-To: <1414194024-55547-1-git-send-email-lina.iyer@linaro.org>
Set the warmboot address using an SCM call, only if the new address is
different than the old one.
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
---
drivers/soc/qcom/scm-boot.c | 22 ++++++++++++++++++++++
include/soc/qcom/scm-boot.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/drivers/soc/qcom/scm-boot.c b/drivers/soc/qcom/scm-boot.c
index 60ff7b4..5710967 100644
--- a/drivers/soc/qcom/scm-boot.c
+++ b/drivers/soc/qcom/scm-boot.c
@@ -37,3 +37,25 @@ int scm_set_boot_addr(phys_addr_t addr, int flags)
&cmd, sizeof(cmd), NULL, 0);
}
EXPORT_SYMBOL(scm_set_boot_addr);
+
+
+int scm_set_warm_boot_addr(void *entry, int cpu)
+{
+ static int flags[NR_CPUS] = {
+ SCM_FLAG_WARMBOOT_CPU0,
+ SCM_FLAG_WARMBOOT_CPU1,
+ SCM_FLAG_WARMBOOT_CPU2,
+ SCM_FLAG_WARMBOOT_CPU3,
+ };
+ static DEFINE_PER_CPU(void *, last_known_entry);
+ int ret;
+
+ if (entry == per_cpu(last_known_entry, cpu))
+ return 0;
+
+ ret = scm_set_boot_addr(virt_to_phys(entry), flags[cpu]);
+ if (!ret)
+ per_cpu(last_known_entry, cpu) = entry;
+
+ return ret;
+}
diff --git a/include/soc/qcom/scm-boot.h b/include/soc/qcom/scm-boot.h
index 02b445c..100938b 100644
--- a/include/soc/qcom/scm-boot.h
+++ b/include/soc/qcom/scm-boot.h
@@ -22,5 +22,6 @@
#define SCM_FLAG_WARMBOOT_CPU3 0x40
int scm_set_boot_addr(phys_addr_t addr, int flags);
+int scm_set_warm_boot_addr(void *entry, int cpu);
#endif
--
2.1.0
next prev parent reply other threads:[~2014-10-24 23:40 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-24 23:40 [PATCH v9 0/9] cpuidle driver for QCOM SoCs: 8064, 8074, 8084 Lina Iyer
2014-10-24 23:40 ` Lina Iyer [this message]
2014-11-14 8:30 ` [PATCH v9 1/9] qcom: scm: scm_set_warm_boot_addr() to set the warmboot address Daniel Lezcano
2014-11-14 16:33 ` Lina Iyer
2014-10-24 23:40 ` [PATCH v9 2/9] qcom: spm: Add Subsystem Power Manager driver Lina Iyer
2014-11-14 15:56 ` Daniel Lezcano
2014-11-19 17:43 ` Lina Iyer
2014-11-26 11:19 ` Daniel Lezcano
2014-11-26 15:20 ` Lina Iyer
2014-11-26 15:22 ` Lina Iyer
2014-11-14 22:46 ` Stephen Boyd
2014-11-18 16:56 ` Lina Iyer
2014-11-18 20:28 ` Stephen Boyd
2014-11-17 21:32 ` Daniel Lezcano
2014-11-18 18:00 ` Lina Iyer
2014-11-18 19:39 ` Bjorn Andersson
2014-11-26 18:04 ` Kevin Hilman
2014-11-26 21:25 ` Daniel Lezcano
2014-10-24 23:40 ` [PATCH v9 3/9] arm: dts: qcom: Add power-controller device node for 8974 Krait CPUs Lina Iyer
2014-10-24 23:40 ` [PATCH v9 4/9] arm: dts: qcom: Add power-controller device node for 8084 " Lina Iyer
2014-10-24 23:40 ` [PATCH v9 5/9] arm: dts: qcom: Update power-controller device node for 8064 " Lina Iyer
2014-10-24 23:40 ` [PATCH v9 6/9] qcom: cpuidle: Add cpuidle driver for QCOM cpus Lina Iyer
2014-11-16 21:20 ` Daniel Lezcano
2014-11-17 18:30 ` Lina Iyer
2014-11-17 17:39 ` Lorenzo Pieralisi
2014-11-17 22:15 ` Lina Iyer
2014-10-24 23:40 ` [PATCH v9 7/9] arm: dts: qcom: Add idle states device nodes for 8974 Lina Iyer
2014-10-24 23:40 ` [PATCH v9 8/9] arm: dts: qcom: Add idle states device nodes for 8084 Lina Iyer
2014-10-24 23:40 ` [PATCH v9 9/9] arm: dts: qcom: Add idle state device nodes for 8064 Lina Iyer
2014-10-27 9:15 ` [PATCH v9 0/9] cpuidle driver for QCOM SoCs: 8064, 8074, 8084 Ivan T. Ivanov
2014-10-27 14:45 ` Lina Iyer
2014-11-13 20:25 ` Lina Iyer
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