Dynamically detect the DBx500 SOC an revision based on the ASIC ID.
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
# Makefile for the linux kernel, U8500 machine.
#
-obj-y := clock.o cpu.o devices.o devices-common.o
+obj-y := clock.o cpu.o devices.o devices-common.o \
+ id.o
obj-$(CONFIG_UX500_SOC_DB5500) += cpu-db5500.o dma-db5500.o
obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o devices-db8500.o prcmu.o
obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \
#include "devices-db5500.h"
-static struct map_desc u5500_io_desc[] __initdata = {
+static struct map_desc u5500_uart_io_desc[] __initdata = {
__IO_DEV_DESC(U5500_UART0_BASE, SZ_4K),
__IO_DEV_DESC(U5500_UART2_BASE, SZ_4K),
+};
+
+static struct map_desc u5500_io_desc[] __initdata = {
__IO_DEV_DESC(U5500_GIC_CPU_BASE, SZ_4K),
__IO_DEV_DESC(U5500_GIC_DIST_BASE, SZ_4K),
__IO_DEV_DESC(U5500_L2CC_BASE, SZ_4K),
void __init u5500_map_io(void)
{
+ /*
+ * Map the UARTs early so that the DEBUG_LL stuff continues to work.
+ */
+ iotable_init(u5500_uart_io_desc, ARRAY_SIZE(u5500_uart_io_desc));
+
+ ux500_map_io();
+
iotable_init(u5500_io_desc, ARRAY_SIZE(u5500_io_desc));
}
};
/* minimum static i/o mapping required to boot U8500 platforms */
-static struct map_desc u8500_io_desc[] __initdata = {
+static struct map_desc u8500_uart_io_desc[] __initdata = {
__IO_DEV_DESC(U8500_UART0_BASE, SZ_4K),
__IO_DEV_DESC(U8500_UART2_BASE, SZ_4K),
+};
+
+static struct map_desc u8500_io_desc[] __initdata = {
__IO_DEV_DESC(U8500_GIC_CPU_BASE, SZ_4K),
__IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K),
__IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K),
__IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K),
__IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K),
__IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K),
- __MEM_DEV_DESC(U8500_BOOT_ROM_BASE, SZ_1M),
};
static struct map_desc u8500_ed_io_desc[] __initdata = {
__IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
};
-/*
- * Functions to differentiate between later ASICs
- * We look into the end of the ROM to locate the hardcoded ASIC ID.
- * This is only needed to differentiate between minor revisions and
- * process variants of an ASIC, the major revisions are encoded in
- * the cpuid.
- */
-#define U8500_ASIC_ID_LOC_ED_V1 (U8500_BOOT_ROM_BASE + 0x1FFF4)
-#define U8500_ASIC_ID_LOC_V2 (U8500_BOOT_ROM_BASE + 0x1DBF4)
-#define U8500_ASIC_REV_ED 0x01
-#define U8500_ASIC_REV_V10 0xA0
-#define U8500_ASIC_REV_V11 0xA1
-#define U8500_ASIC_REV_V20 0xB0
-
-/**
- * struct db8500_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
- * This field definion is not formally defined but makes
- * sense.
- */
-struct db8500_asic_id {
- u8 process;
- u16 partnumber;
- u8 revision;
-};
-
-/* This isn't going to change at runtime */
-static struct db8500_asic_id db8500_id;
-
-static void __init get_db8500_asic_id(void)
-{
- u32 asicid;
-
- if (cpu_is_u8500v1() || cpu_is_u8500ed())
- asicid = readl(__io_address(U8500_ASIC_ID_LOC_ED_V1));
- else if (cpu_is_u8500v2())
- asicid = readl(__io_address(U8500_ASIC_ID_LOC_V2));
- else
- BUG();
-
- db8500_id.process = (asicid >> 24);
- db8500_id.partnumber = (asicid >> 16) & 0xFFFFU;
- db8500_id.revision = asicid & 0xFFU;
-}
-
-bool cpu_is_u8500v10(void)
-{
- return (db8500_id.revision == U8500_ASIC_REV_V10);
-}
-
-bool cpu_is_u8500v11(void)
+void __init u8500_map_io(void)
{
- return (db8500_id.revision == U8500_ASIC_REV_V11);
-}
+ /*
+ * Map the UARTs early so that the DEBUG_LL stuff continues to work.
+ */
+ iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc));
-bool cpu_is_u8500v20(void)
-{
- return (db8500_id.revision == U8500_ASIC_REV_V20);
-}
+ ux500_map_io();
-void __init u8500_map_io(void)
-{
iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
if (cpu_is_u8500ed())
iotable_init(u8500_v1_io_desc, ARRAY_SIZE(u8500_v1_io_desc));
else if (cpu_is_u8500v2())
iotable_init(u8500_v2_io_desc, ARRAY_SIZE(u8500_v2_io_desc));
-
- /* Read out the ASIC ID as early as we can */
- get_db8500_asic_id();
}
static resource_size_t __initdata db8500_gpio_base[] = {
*/
void __init u8500_init_devices(void)
{
- /* Display some ASIC boilerplate */
- pr_info("DB8500: process: %02x, revision ID: 0x%02x\n",
- db8500_id.process, db8500_id.revision);
- if (cpu_is_u8500ed())
- pr_info("DB8500: Early Drop (ED)\n");
- else if (cpu_is_u8500v10())
- pr_info("DB8500: version 1.0\n");
- else if (cpu_is_u8500v11())
- pr_info("DB8500: version 1.1\n");
- else if (cpu_is_u8500v20())
- pr_info("DB8500: version 2.0\n");
- else
- pr_warning("ASIC: UNKNOWN SILICON VERSION!\n");
-
if (cpu_is_u8500ed())
dma40_u8500ed_fixup();
static void __iomem *l2x0_base;
#endif
-void __init ux500_map_io(void)
-{
-}
-
void __init ux500_init_irq(void)
{
void __iomem *dist_base;
--- /dev/null
+/*
+ * 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 <asm/cputype.h>
+#include <asm/tlbflush.h>
+#include <asm/cacheflush.h>
+#include <asm/mach/map.h>
+
+#include <mach/hardware.h>
+#include <mach/setup.h>
+
+struct dbx500_asic_id dbx500_id;
+
+static unsigned int ux500_read_asicid(phys_addr_t addr)
+{
+ phys_addr_t base = addr & ~0xfff;
+ struct map_desc desc = {
+ .virtual = IO_ADDRESS(base),
+ .pfn = __phys_to_pfn(base),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ };
+
+ iotable_init(&desc, 1);
+
+ /* As in devicemaps_init() */
+ local_flush_tlb_all();
+ flush_cache_all();
+
+ return readl(__io_address(addr));
+}
+
+static void ux500_print_soc_info(unsigned int asicid)
+{
+ unsigned int rev = dbx500_revision();
+
+ pr_info("DB%4x ", dbx500_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
+ * DB5500v1 0x412fc091 0x9001FFF4 0x005500A0
+ */
+
+void __init ux500_map_io(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: /* DB8500v2 / DB5500v1 */
+ asicid = ux500_read_asicid(0x9001DBF4);
+ if (partnumber(asicid) == 0x8500)
+ /* DB8500v2 */
+ break;
+
+ /* DB5500v1 */
+ addr = 0x9001FFF4;
+ break;
+ }
+
+ if (addr)
+ asicid = ux500_read_asicid(addr);
+
+ if (!asicid) {
+ pr_err("Unable to identify SoC\n");
+ ux500_unknown_soc();
+ }
+
+ dbx500_id.process = asicid >> 24;
+ dbx500_id.partnumber = partnumber(asicid);
+ dbx500_id.revision = asicid & 0xff;
+
+ ux500_print_soc_info(asicid);
+}
#ifndef __ASSEMBLY__
-#include <asm/cputype.h>
-
-static inline bool cpu_is_u8500(void)
-{
-#ifdef CONFIG_UX500_SOC_DB8500
- return 1;
-#else
- return 0;
-#endif
-}
-
-#define CPUID_DB8500ED 0x410fc090
-#define CPUID_DB8500V1 0x411fc091
-#define CPUID_DB8500V2 0x412fc091
-
-static inline bool cpu_is_u8500ed(void)
-{
- return cpu_is_u8500() && (read_cpuid_id() == CPUID_DB8500ED);
-}
-
-static inline bool cpu_is_u8500v1(void)
-{
- return cpu_is_u8500() && (read_cpuid_id() == CPUID_DB8500V1);
-}
-
-static inline bool cpu_is_u8500v2(void)
-{
- return cpu_is_u8500() && (read_cpuid_id() == CPUID_DB8500V2);
-}
-
-#ifdef CONFIG_UX500_SOC_DB8500
-bool cpu_is_u8500v10(void);
-bool cpu_is_u8500v11(void);
-bool cpu_is_u8500v20(void);
-#else
-static inline bool cpu_is_u8500v10(void) { return false; }
-static inline bool cpu_is_u8500v11(void) { return false; }
-static inline bool cpu_is_u8500v20(void) { return false; }
-#endif
-
-static inline bool cpu_is_u5500(void)
-{
-#ifdef CONFIG_UX500_SOC_DB5500
- return 1;
-#else
- return 0;
-#endif
-}
+#include <mach/id.h>
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
-#define ux500_unknown_soc() BUG()
#endif
--- /dev/null
+/*
+ * 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
+ */
+
+#ifndef __MACH_UX500_ID
+#define __MACH_UX500_ID
+
+/**
+ * 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;
+};
+
+extern struct dbx500_asic_id dbx500_id;
+
+static inline unsigned int __attribute_const__ dbx500_partnumber(void)
+{
+ return dbx500_id.partnumber;
+}
+
+static inline unsigned int __attribute_const__ dbx500_revision(void)
+{
+ return dbx500_id.revision;
+}
+
+/*
+ * SOCs
+ */
+
+static inline bool __attribute_const__ cpu_is_u8500(void)
+{
+ return dbx500_partnumber() == 0x8500;
+}
+
+static inline bool __attribute_const__ cpu_is_u5500(void)
+{
+ return dbx500_partnumber() == 0x5500;
+}
+
+/*
+ * 8500 revisions
+ */
+
+static inline bool __attribute_const__ cpu_is_u8500ed(void)
+{
+ return cpu_is_u8500() && dbx500_revision() == 0x00;
+}
+
+static inline bool __attribute_const__ cpu_is_u8500v1(void)
+{
+ return cpu_is_u8500() && (dbx500_revision() & 0xf0) == 0xA0;
+}
+
+static inline bool __attribute_const__ cpu_is_u8500v10(void)
+{
+ return cpu_is_u8500() && dbx500_revision() == 0xA0;
+}
+
+static inline bool __attribute_const__ cpu_is_u8500v11(void)
+{
+ return cpu_is_u8500() && dbx500_revision() == 0xA1;
+}
+
+static inline bool __attribute_const__ cpu_is_u8500v2(void)
+{
+ return cpu_is_u8500() && ((dbx500_revision() & 0xf0) == 0xB0);
+}
+
+#define ux500_unknown_soc() BUG()
+
+#endif
#include <asm/mach/time.h>
#include <linux/init.h>
+void __init ux500_map_io(void);
extern void __init u5500_map_io(void);
extern void __init u8500_map_io(void);
git.openpandora.org / pandora-kernel.git / commitdiff