[PATCH v2 3/3] ARM: zynq: Extend SLCR driver to read OCM configuration

From: Michal Simek
Date: Mon Oct 20 2014 - 09:26:04 EST


Get OCM configuration from SLCR.

Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
---

Changes in v2: None

arch/arm/mach-zynq/slcr.c | 15 +++++++++++++++
include/soc/zynq/common.h | 1 +
2 files changed, 16 insertions(+)

diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index 22d9d54d2333..3f65e2027875 100644
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -27,6 +27,7 @@
#define SLCR_A9_CPU_RST_CTRL_OFFSET 0x244 /* CPU Software Reset Control */
#define SLCR_REBOOT_STATUS_OFFSET 0x258 /* PS Reboot Status */
#define SLCR_PSS_IDCODE 0x530 /* PS IDCODE */
+#define SLCR_OCM_CFG_OFFSET 0x910 /* OCM Address Mapping */

#define SLCR_UNLOCK_MAGIC 0xDF0D
#define SLCR_A9_CPU_CLKSTOP 0x10
@@ -126,6 +127,20 @@ void zynq_slcr_system_reset(void)
}

/**
+ * zynq_slcr_get_ocm_config - Get SLCR OCM config
+ *
+ * Return: OCM config bits
+ */
+u32 zynq_slcr_get_ocm_config(void)
+{
+ u32 val;
+
+ zynq_slcr_read(&val, SLCR_OCM_CFG_OFFSET);
+
+ return val;
+}
+
+/**
* zynq_slcr_cpu_start - Start cpu
* @cpu: cpu number
*/
diff --git a/include/soc/zynq/common.h b/include/soc/zynq/common.h
index 2bc71273c73c..3d0b9a6d76ab 100644
--- a/include/soc/zynq/common.h
+++ b/include/soc/zynq/common.h
@@ -27,6 +27,7 @@ extern void zynq_slcr_cpu_start(int cpu);
extern bool zynq_slcr_cpu_state_read(int cpu);
extern void zynq_slcr_cpu_state_write(int cpu, bool die);
extern u32 zynq_slcr_get_device_id(void);
+extern u32 zynq_slcr_get_ocm_config(void);

#ifdef CONFIG_SMP
extern void secondary_startup(void);
--
1.8.2.3

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