@@ -25,6 +25,7 @@ config MACH_U8500
bool "U8500 Development platform"
depends on UX500_SOC_DB8500
select TPS6105X
+ select SYS_SOC
help
Include support for the mop500 development platform.
@@ -2,12 +2,17 @@
* 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
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/sys_soc.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/platform_device.h>
#include <asm/cputype.h>
#include <asm/tlbflush.h>
@@ -105,3 +110,94 @@ void __init ux500_map_io(void)
ux500_print_soc_info(asicid);
}
+
+#ifdef CONFIG_SYS_SOC
+#define U8500_BB_UID_BASE (U8500_BACKUPRAM1_BASE + 0xFC0)
+#define U8500_BB_UID_LENGTH 5
+
+static ssize_t ux500_get_family(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "Ux500\n");
+}
+
+static ssize_t ux500_get_machine(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "DB%4x\n", dbx500_partnumber());
+}
+
+static ssize_t ux500_get_soc_id(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ void __iomem *uid_base;
+ int i;
+ ssize_t sz = 0;
+
+ if (dbx500_partnumber() == 0x8500) {
+ uid_base = __io_address(U8500_BB_UID_BASE);
+ for (i = 0; i < U8500_BB_UID_LENGTH; i++)
+ sz += sprintf(buf + sz, "%08x", readl(uid_base + i * sizeof(u32)));
+ sz += sprintf(buf + sz, "\n");
+ } else {
+ /* Don't know where it is located for U5500 */
+ sz = sprintf(buf, "N/A\n");
+ }
+
+ return sz;
+}
+
+static ssize_t ux500_get_revision(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned int rev = dbx500_revision();
+
+ if (rev == 0x01)
+ return sprintf(buf, "%s\n", "ED");
+ else if (rev >= 0xA0)
+ return sprintf(buf, "%d.%d\n" , (rev >> 4) - 0xA + 1, rev & 0xf);
+
+ return sprintf(buf, "%s", "Unknown\n");
+}
+
+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);
+}
+
+struct device_attribute soc_one_attrs[] = {
+ __ATTR(machine, S_IRUGO, ux500_get_machine, NULL),
+ __ATTR(family, S_IRUGO, ux500_get_family, NULL),
+ __ATTR(soc_id, S_IRUGO, ux500_get_soc_id, NULL),
+ __ATTR(revision, S_IRUGO, ux500_get_revision, NULL),
+ __ATTR(process, S_IRUGO, ux500_get_process, NULL),
+ __ATTR_NULL,
+};
+
+struct device_attribute *each_soc_attrs[] = {
+ soc_one_attrs,
+ NULL,
+};
+
+static int __init ux500_soc_sysfs_init(void)
+{
+ return soc_device_register(each_soc_attrs, ARRAY_SIZE(each_soc_attrs));
+}
+module_init(ux500_soc_sysfs_init);
+
+static void __exit ux500_soc_sysfs_exit(void)
+{
+ return soc_device_unregister(each_soc_attrs, ARRAY_SIZE(each_soc_attrs));
+}
+module_exit(ux500_soc_sysfs_exit);
+
+#endif
Signed-off-by: Lee Jones <lee.jones@linaro.org> --- arch/arm/mach-ux500/Kconfig | 1 + arch/arm/mach-ux500/id.c | 96 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 97 insertions(+), 0 deletions(-)