diff options
Diffstat (limited to 'arch/arm/mach-ux500/id.c')
| -rw-r--r-- | arch/arm/mach-ux500/id.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/arch/arm/mach-ux500/id.c b/arch/arm/mach-ux500/id.c deleted file mode 100644 index 983004d0fef2..000000000000 --- a/arch/arm/mach-ux500/id.c +++ /dev/null @@ -1,213 +0,0 @@ -/* - * 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/random.h> -#include <linux/slab.h> -#include <linux/sys_soc.h> - -#include <asm/cputype.h> -#include <asm/tlbflush.h> -#include <asm/cacheflush.h> -#include <asm/mach/map.h> - -#include "setup.h" - -#include "db8500-regs.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(void) -{ - void __iomem *uid; - const char *retstr; - - uid = ioremap(U8500_BB_UID_BASE, 0x20); - if (!uid) - return NULL; - /* 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(uid); - return retstr; -} - -static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr) -{ - soc_dev_attr->soc_id = db8500_read_soc_id(); - 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); - -struct device * __init ux500_soc_device_init(void) -{ - struct device *parent; - struct soc_device *soc_dev; - struct soc_device_attribute *soc_dev_attr; - - ux500_setup_id(); - - 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_dev = soc_device_register(soc_dev_attr); - if (IS_ERR(soc_dev)) { - kfree(soc_dev_attr); - return NULL; - } - - parent = soc_device_to_device(soc_dev); - device_create_file(parent, &ux500_soc_attr); - - return parent; -} |