[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/soc/ux500/Kconfig b/src/kernel/linux/v4.14/drivers/soc/ux500/Kconfig
new file mode 100644
index 0000000..025a44a
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/soc/ux500/Kconfig
@@ -0,0 +1,7 @@
+config UX500_SOC_ID
+ bool "SoC bus for ST-Ericsson ux500"
+ depends on ARCH_U8500 || COMPILE_TEST
+ default ARCH_U8500
+ help
+ Include support for the SoC bus on the ARM RealView platforms
+ providing some sysfs information about the ASIC variant.
diff --git a/src/kernel/linux/v4.14/drivers/soc/ux500/Makefile b/src/kernel/linux/v4.14/drivers/soc/ux500/Makefile
new file mode 100644
index 0000000..0b87ad0
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/soc/ux500/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_UX500_SOC_ID) += ux500-soc-id.o
diff --git a/src/kernel/linux/v4.14/drivers/soc/ux500/ux500-soc-id.c b/src/kernel/linux/v4.14/drivers/soc/ux500/ux500-soc-id.c
new file mode 100644
index 0000000..6c1be74
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/soc/ux500/ux500-soc-id.c
@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Rabin Vincent <rabin.vincent@stericsson.com> 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/module.h>
+#include <linux/random.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/sys_soc.h>
+
+#include <asm/cputype.h>
+#include <asm/tlbflush.h>
+#include <asm/cacheflush.h>
+#include <asm/mach/map.h>
+
+/**
+ * struct dbx500_asic_id - fields of the ASIC ID
+ * @process: the manufacturing process, 0x40 is 40 nm 0x00 is "standard"
+ * @partnumber: hithereto 0x8500 for DB8500
+ * @revision: version code in the series
+ */
+struct dbx500_asic_id {
+ u16 partnumber;
+ u8 revision;
+ u8 process;
+};
+
+static struct dbx500_asic_id dbx500_id;
+
+static unsigned int __init ux500_read_asicid(phys_addr_t addr)
+{
+ void __iomem *virt = ioremap(addr, 4);
+ unsigned int asicid;
+
+ if (!virt)
+ return 0;
+
+ asicid = readl(virt);
+ iounmap(virt);
+
+ return asicid;
+}
+
+static void ux500_print_soc_info(unsigned int asicid)
+{
+ unsigned int rev = dbx500_id.revision;
+
+ pr_info("DB%4x ", dbx500_id.partnumber);
+
+ if (rev == 0x01)
+ pr_cont("Early Drop");
+ else if (rev >= 0xA0)
+ pr_cont("v%d.%d" , (rev >> 4) - 0xA + 1, rev & 0xf);
+ else
+ pr_cont("Unknown");
+
+ pr_cont(" [%#010x]\n", asicid);
+}
+
+static unsigned int partnumber(unsigned int asicid)
+{
+ return (asicid >> 8) & 0xffff;
+}
+
+/*
+ * SOC MIDR ASICID ADDRESS ASICID VALUE
+ * DB8500ed 0x410fc090 0x9001FFF4 0x00850001
+ * DB8500v1 0x411fc091 0x9001FFF4 0x008500A0
+ * DB8500v1.1 0x411fc091 0x9001FFF4 0x008500A1
+ * DB8500v2 0x412fc091 0x9001DBF4 0x008500B0
+ * DB8520v2.2 0x412fc091 0x9001DBF4 0x008500B2
+ * DB5500v1 0x412fc091 0x9001FFF4 0x005500A0
+ * DB9540 0x413fc090 0xFFFFDBF4 0x009540xx
+ */
+
+static void __init ux500_setup_id(void)
+{
+ unsigned int cpuid = read_cpuid_id();
+ unsigned int asicid = 0;
+ phys_addr_t addr = 0;
+
+ switch (cpuid) {
+ case 0x410fc090: /* DB8500ed */
+ case 0x411fc091: /* DB8500v1 */
+ addr = 0x9001FFF4;
+ break;
+
+ case 0x412fc091: /* DB8520 / DB8500v2 / DB5500v1 */
+ asicid = ux500_read_asicid(0x9001DBF4);
+ if (partnumber(asicid) == 0x8500 ||
+ partnumber(asicid) == 0x8520)
+ /* DB8500v2 */
+ break;
+
+ /* DB5500v1 */
+ addr = 0x9001FFF4;
+ break;
+
+ case 0x413fc090: /* DB9540 */
+ addr = 0xFFFFDBF4;
+ break;
+ }
+
+ if (addr)
+ asicid = ux500_read_asicid(addr);
+
+ if (!asicid) {
+ pr_err("Unable to identify SoC\n");
+ BUG();
+ }
+
+ dbx500_id.process = asicid >> 24;
+ dbx500_id.partnumber = partnumber(asicid);
+ dbx500_id.revision = asicid & 0xff;
+
+ ux500_print_soc_info(asicid);
+}
+
+static const char * __init ux500_get_machine(void)
+{
+ return kasprintf(GFP_KERNEL, "DB%4x", dbx500_id.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_id.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 const char *db8500_read_soc_id(struct device_node *backupram)
+{
+ void __iomem *base;
+ void __iomem *uid;
+ const char *retstr;
+
+ base = of_iomap(backupram, 0);
+ if (!base)
+ return NULL;
+ uid = base + 0x1fc0;
+
+ /* Throw these device-specific numbers into the entropy pool */
+ add_device_randomness(uid, 0x14);
+ retstr = kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",
+ readl((u32 *)uid+0),
+ readl((u32 *)uid+1), readl((u32 *)uid+2),
+ readl((u32 *)uid+3), readl((u32 *)uid+4));
+ iounmap(base);
+ return retstr;
+}
+
+static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
+ struct device_node *backupram)
+{
+ soc_dev_attr->soc_id = db8500_read_soc_id(backupram);
+ soc_dev_attr->machine = ux500_get_machine();
+ soc_dev_attr->family = ux500_get_family();
+ soc_dev_attr->revision = ux500_get_revision();
+}
+
+static const struct device_attribute ux500_soc_attr =
+ __ATTR(process, S_IRUGO, ux500_get_process, NULL);
+
+static int __init ux500_soc_device_init(void)
+{
+ struct device *parent;
+ struct soc_device *soc_dev;
+ struct soc_device_attribute *soc_dev_attr;
+ struct device_node *backupram;
+
+ backupram = of_find_compatible_node(NULL, NULL, "ste,dbx500-backupram");
+ if (!backupram)
+ return 0;
+
+ ux500_setup_id();
+
+ soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ if (!soc_dev_attr)
+ return -ENOMEM;
+
+ soc_info_populate(soc_dev_attr, backupram);
+
+ soc_dev = soc_device_register(soc_dev_attr);
+ if (IS_ERR(soc_dev)) {
+ kfree(soc_dev_attr);
+ return PTR_ERR(soc_dev);
+ }
+
+ parent = soc_device_to_device(soc_dev);
+ device_create_file(parent, &ux500_soc_attr);
+
+ return 0;
+}
+subsys_initcall(ux500_soc_device_init);