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-rw-r--r--arch/arm/mach-ux500/cpu.c90
1 files changed, 88 insertions, 2 deletions
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index f418574..d11f389 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -2,6 +2,7 @@
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
+ * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
*/
@@ -11,10 +12,15 @@
#include <linux/mfd/db8500-prcmu.h>
#include <linux/mfd/db5500-prcmu.h>
#include <linux/clksrc-dbx500-prcmu.h>
+#include <linux/sys_soc.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
#include <asm/hardware/gic.h>
#include <asm/mach/map.h>
-#include <asm/localtimer.h>
#include <mach/hardware.h>
#include <mach/setup.h>
@@ -24,6 +30,11 @@
void __iomem *_PRCMU_BASE;
+static const struct of_device_id ux500_dt_irq_match[] = {
+ { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+ {},
+};
+
void __init ux500_init_irq(void)
{
void __iomem *dist_base;
@@ -38,7 +49,12 @@ void __init ux500_init_irq(void)
} else
ux500_unknown_soc();
- gic_init(0, 29, dist_base, cpu_base);
+#ifdef CONFIG_OF
+ if (of_have_populated_dt())
+ of_irq_init(ux500_dt_irq_match);
+ else
+#endif
+ gic_init(0, 29, dist_base, cpu_base);
/*
* Init clocks here so that they are available for system timer
@@ -50,3 +66,73 @@ void __init ux500_init_irq(void)
db8500_prcmu_early_init();
clk_init();
}
+
+static const char * __init ux500_get_machine(void)
+{
+ return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
+}
+
+static const char * __init ux500_get_family(void)
+{
+ return kasprintf(GFP_KERNEL, "ux500");
+}
+
+static const char * __init ux500_get_revision(void)
+{
+ unsigned int rev = dbx500_revision();
+
+ if (rev == 0x01)
+ return kasprintf(GFP_KERNEL, "%s", "ED");
+ else if (rev >= 0xA0)
+ return kasprintf(GFP_KERNEL, "%d.%d",
+ (rev >> 4) - 0xA + 1, rev & 0xf);
+
+ return kasprintf(GFP_KERNEL, "%s", "Unknown");
+}
+
+static ssize_t ux500_get_process(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ if (dbx500_id.process == 0x00)
+ return sprintf(buf, "Standard\n");
+
+ return sprintf(buf, "%02xnm\n", dbx500_id.process);
+}
+
+static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
+ const char *soc_id)
+{
+ soc_dev_attr->soc_id = soc_id;
+ soc_dev_attr->machine = ux500_get_machine();
+ soc_dev_attr->family = ux500_get_family();
+ soc_dev_attr->revision = ux500_get_revision();
+}
+
+struct device_attribute ux500_soc_attr =
+ __ATTR(process, S_IRUGO, ux500_get_process, NULL);
+
+struct device * __init ux500_soc_device_init(const char *soc_id)
+{
+ struct device *parent;
+ struct soc_device *soc_dev;
+ struct soc_device_attribute *soc_dev_attr;
+
+ soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ if (!soc_dev_attr)
+ return ERR_PTR(-ENOMEM);
+
+ soc_info_populate(soc_dev_attr, soc_id);
+
+ soc_dev = soc_device_register(soc_dev_attr);
+ if (IS_ERR_OR_NULL(soc_dev)) {
+ kfree(soc_dev_attr);
+ return NULL;
+ }
+
+ parent = soc_device_to_device(soc_dev);
+ if (!IS_ERR_OR_NULL(parent))
+ device_create_file(parent, &ux500_soc_attr);
+
+ return parent;
+}