ST-Ericsson's U8500 implementation.
Register sysfs SoC interface, and exports:
- Machine name
- Family name
- SoC ID
- Silicon process
- Silicon revision number.
Signed-off-by: Maxime COQUELIN <[email protected]>
socinfo : ux500 part 2
---
arch/arm/mach-ux500/Kconfig | 1 +
arch/arm/mach-ux500/id.c | 70 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 71 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index 7f8620f..08f9859 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig
@@ -23,6 +23,7 @@ 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.
diff --git a/arch/arm/mach-ux500/id.c b/arch/arm/mach-ux500/id.c
index d35122e..457b48e 100644
--- a/arch/arm/mach-ux500/id.c
+++ b/arch/arm/mach-ux500/id.c
@@ -8,6 +8,9 @@
#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 <asm/cputype.h>
#include <asm/tlbflush.h>
@@ -105,3 +108,70 @@ 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_machine(char *buf, struct sysfs_soc_info *si)
+{
+ return sprintf(buf, "DB%4x\n", dbx500_partnumber());
+}
+
+static ssize_t ux500_get_soc_id(char *buf, struct sysfs_soc_info *si)
+{
+ 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(char *buf, struct sysfs_soc_info *si)
+{
+ 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(char *buf, struct sysfs_soc_info *si)
+{
+ if (dbx500_id.process == 0x00)
+ return sprintf(buf, "Standard\n");
+
+ return sprintf(buf, "%02xnm\n", dbx500_id.process);
+}
+
+static struct sysfs_soc_info soc_info[] = {
+ SYSFS_SOC_ATTR_CALLBACK("machine", ux500_get_machine),
+ SYSFS_SOC_ATTR_VALUE("family", "Ux500"),
+ SYSFS_SOC_ATTR_CALLBACK("soc_id", ux500_get_soc_id),
+ SYSFS_SOC_ATTR_CALLBACK("revision", ux500_get_revision),
+ SYSFS_SOC_ATTR_CALLBACK("process", ux500_get_process),
+};
+
+static int __init ux500_sys_soc_init(void)
+{
+ return register_sysfs_soc(soc_info, ARRAY_SIZE(soc_info));
+}
+
+module_init(ux500_sys_soc_init);
+#endif
+
--
1.7.1
--
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