[PATCH] ARM: Add Versatile Express support
Russell King
linux at arm.linux.org.uk
Thu Mar 4 14:11:57 EST 2010
Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
---
arch/arm/Kconfig | 16 +
arch/arm/Makefile | 1 +
arch/arm/mach-vexpress/Kconfig | 4 +
arch/arm/mach-vexpress/Makefile | 5 +
arch/arm/mach-vexpress/Makefile.boot | 3 +
arch/arm/mach-vexpress/core.h | 26 ++
arch/arm/mach-vexpress/include/mach/clkdev.h | 16 +
arch/arm/mach-vexpress/include/mach/debug-macro.S | 23 ++
arch/arm/mach-vexpress/include/mach/entry-macro.S | 67 +++++
arch/arm/mach-vexpress/include/mach/hardware.h | 1 +
arch/arm/mach-vexpress/include/mach/io.h | 28 ++
arch/arm/mach-vexpress/include/mach/irqs.h | 4 +
arch/arm/mach-vexpress/include/mach/memory.h | 25 ++
arch/arm/mach-vexpress/include/mach/motherboard.h | 121 ++++++++
arch/arm/mach-vexpress/include/mach/system.h | 37 +++
arch/arm/mach-vexpress/include/mach/timex.h | 23 ++
arch/arm/mach-vexpress/include/mach/uncompress.h | 52 ++++
arch/arm/mach-vexpress/include/mach/vmalloc.h | 21 ++
arch/arm/mach-vexpress/v2m.c | 319 +++++++++++++++++++++
drivers/i2c/busses/Kconfig | 2 +-
20 files changed, 793 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-vexpress/Kconfig
create mode 100644 arch/arm/mach-vexpress/Makefile
create mode 100644 arch/arm/mach-vexpress/Makefile.boot
create mode 100644 arch/arm/mach-vexpress/core.h
create mode 100644 arch/arm/mach-vexpress/include/mach/clkdev.h
create mode 100644 arch/arm/mach-vexpress/include/mach/debug-macro.S
create mode 100644 arch/arm/mach-vexpress/include/mach/entry-macro.S
create mode 100644 arch/arm/mach-vexpress/include/mach/hardware.h
create mode 100644 arch/arm/mach-vexpress/include/mach/io.h
create mode 100644 arch/arm/mach-vexpress/include/mach/irqs.h
create mode 100644 arch/arm/mach-vexpress/include/mach/memory.h
create mode 100644 arch/arm/mach-vexpress/include/mach/motherboard.h
create mode 100644 arch/arm/mach-vexpress/include/mach/system.h
create mode 100644 arch/arm/mach-vexpress/include/mach/timex.h
create mode 100644 arch/arm/mach-vexpress/include/mach/uncompress.h
create mode 100644 arch/arm/mach-vexpress/include/mach/vmalloc.h
create mode 100644 arch/arm/mach-vexpress/v2m.c
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 28fc082..2213d61 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -269,6 +269,20 @@ config ARCH_VERSATILE
help
This enables support for ARM Ltd Versatile board.
+config ARCH_VEXPRESS
+ bool "ARM Ltd. Versatile Express family"
+ select ARCH_WANT_OPTIONAL_GPIOLIB
+ select ARM_AMBA
+ select ARM_TIMER_SP804
+ select COMMON_CLKDEV
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_TIME
+ select HAVE_CLK
+ select ICST
+ select PLAT_VERSATILE
+ help
+ This enables support for the ARM Ltd Versatile Express boards.
+
config ARCH_AT91
bool "Atmel AT91"
select GENERIC_GPIO
@@ -865,6 +879,8 @@ source "arch/arm/mach-ux500/Kconfig"
source "arch/arm/mach-versatile/Kconfig"
+source "arch/arm/mach-vexpress/Kconfig"
+
source "arch/arm/mach-w90x900/Kconfig"
# Definitions to make life easier
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index f19125e..710340c 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -170,6 +170,7 @@ machine-$(CONFIG_ARCH_STMP37XX) := stmp37xx
machine-$(CONFIG_ARCH_U300) := u300
machine-$(CONFIG_ARCH_U8500) := ux500
machine-$(CONFIG_ARCH_VERSATILE) := versatile
+machine-$(CONFIG_ARCH_VEXPRESS) := vexpress
machine-$(CONFIG_ARCH_W90X900) := w90x900
machine-$(CONFIG_ARCH_NUC93X) := nuc93x
machine-$(CONFIG_FOOTBRIDGE) := footbridge
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
new file mode 100644
index 0000000..751858c
--- /dev/null
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -0,0 +1,4 @@
+menu "Versatile Express platform type"
+ depends on ARCH_VEXPRESS
+
+endmenu
diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile
new file mode 100644
index 0000000..b47cf73
--- /dev/null
+++ b/arch/arm/mach-vexpress/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-y := v2m.o
diff --git a/arch/arm/mach-vexpress/Makefile.boot b/arch/arm/mach-vexpress/Makefile.boot
new file mode 100644
index 0000000..07c2d9c
--- /dev/null
+++ b/arch/arm/mach-vexpress/Makefile.boot
@@ -0,0 +1,3 @@
+ zreladdr-y := 0x60008000
+params_phys-y := 0x60000100
+initrd_phys-y := 0x60800000
diff --git a/arch/arm/mach-vexpress/core.h b/arch/arm/mach-vexpress/core.h
new file mode 100644
index 0000000..57dd95c
--- /dev/null
+++ b/arch/arm/mach-vexpress/core.h
@@ -0,0 +1,26 @@
+#define __MMIO_P2V(x) (((x) & 0xfffff) | (((x) & 0x0f000000) >> 4) | 0xf8000000)
+#define MMIO_P2V(x) ((void __iomem *)__MMIO_P2V(x))
+
+#define AMBA_DEVICE(name,busid,base,plat) \
+struct amba_device name##_device = { \
+ .dev = { \
+ .coherent_dma_mask = ~0UL, \
+ .init_name = busid, \
+ .platform_data = plat, \
+ }, \
+ .res = { \
+ .start = base, \
+ .end = base + SZ_4K - 1, \
+ .flags = IORESOURCE_MEM, \
+ }, \
+ .dma_mask = ~0UL, \
+ .irq = IRQ_##base, \
+ /* .dma = DMA_##base,*/ \
+}
+
+struct map_desc;
+
+void v2m_map_io(struct map_desc *tile, size_t num);
+extern struct sys_timer v2m_timer;
+
+extern void __iomem *gic_cpu_base_addr;
diff --git a/arch/arm/mach-vexpress/include/mach/clkdev.h b/arch/arm/mach-vexpress/include/mach/clkdev.h
new file mode 100644
index 0000000..baea03c
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/clkdev.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#include <asm/hardware/icst.h>
+
+struct clk {
+ unsigned long rate;
+ const struct icst_params *params;
+ void __iomem *vcoreg;
+ void (*setvco)(struct clk *, struct icst_vco vco);
+};
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif
diff --git a/arch/arm/mach-vexpress/include/mach/debug-macro.S b/arch/arm/mach-vexpress/include/mach/debug-macro.S
new file mode 100644
index 0000000..5167e2a
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/debug-macro.S
@@ -0,0 +1,23 @@
+/* arch/arm/mach-realview/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ * Copyright (C) 1994-1999 Russell King
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define DEBUG_LL_UART_OFFSET 0x00009000
+
+ .macro addruart,rx,tmp
+ mrc p15, 0, \rx, c1, c0
+ tst \rx, #1 @ MMU enabled?
+ moveq \rx, #0x10000000
+ movne \rx, #0xf8000000 @ virtual base
+ orr \rx, \rx, #DEBUG_LL_UART_OFFSET
+ .endm
+
+#include <asm/hardware/debug-pl01x.S>
diff --git a/arch/arm/mach-vexpress/include/mach/entry-macro.S b/arch/arm/mach-vexpress/include/mach/entry-macro.S
new file mode 100644
index 0000000..20e9fb5
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/entry-macro.S
@@ -0,0 +1,67 @@
+#include <asm/hardware/gic.h>
+
+ .macro disable_fiq
+ .endm
+
+ .macro get_irqnr_preamble, base, tmp
+ ldr \base, =gic_cpu_base_addr
+ ldr \base, [\base]
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
+
+ /*
+ * The interrupt numbering scheme is defined in the
+ * interrupt controller spec. To wit:
+ *
+ * Interrupts 0-15 are IPI
+ * 16-28 are reserved
+ * 29-31 are local. We allow 30 to be used for the watchdog.
+ * 32-1020 are global
+ * 1021-1022 are reserved
+ * 1023 is "spurious" (no interrupt)
+ *
+ * For now, we ignore all local interrupts so only return an interrupt if it's
+ * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs.
+ *
+ * A simple read from the controller will tell us the number of the highest
+ * priority enabled interrupt. We then just need to check whether it is in the
+ * valid range for an IRQ (30-1020 inclusive).
+ */
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ ldr \irqstat, [\base, #GIC_CPU_INTACK] /* bits 12-10 = src CPU, 9-0 = int # */
+ ldr \tmp, =1021
+ bic \irqnr, \irqstat, #0x1c00
+ cmp \irqnr, #29
+ cmpcc \irqnr, \irqnr
+ cmpne \irqnr, \tmp
+ cmpcs \irqnr, \irqnr
+ .endm
+
+ /* We assume that irqstat (the raw value of the IRQ acknowledge
+ * register) is preserved from the macro above.
+ * If there is an IPI, we immediately signal end of interrupt on the
+ * controller, since this requires the original irqstat value which
+ * we won't easily be able to recreate later.
+ */
+
+ .macro test_for_ipi, irqnr, irqstat, base, tmp
+ bic \irqnr, \irqstat, #0x1c00
+ cmp \irqnr, #16
+ strcc \irqstat, [\base, #GIC_CPU_EOI]
+ cmpcs \irqnr, \irqnr
+ .endm
+
+ /* As above, this assumes that irqstat and base are preserved.. */
+
+ .macro test_for_ltirq, irqnr, irqstat, base, tmp
+ bic \irqnr, \irqstat, #0x1c00
+ mov \tmp, #0
+ cmp \irqnr, #29
+ moveq \tmp, #1
+ streq \irqstat, [\base, #GIC_CPU_EOI]
+ cmp \tmp, #0
+ .endm
+
diff --git a/arch/arm/mach-vexpress/include/mach/hardware.h b/arch/arm/mach-vexpress/include/mach/hardware.h
new file mode 100644
index 0000000..40a8c17
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/hardware.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/arch/arm/mach-vexpress/include/mach/io.h b/arch/arm/mach-vexpress/include/mach/io.h
new file mode 100644
index 0000000..748bb52
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/io.h
@@ -0,0 +1,28 @@
+/*
+ * arch/arm/mach-vexpress/include/mach/io.h
+ *
+ * Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(a) __typesafe_io(a)
+#define __mem_pci(a) (a)
+
+#endif
diff --git a/arch/arm/mach-vexpress/include/mach/irqs.h b/arch/arm/mach-vexpress/include/mach/irqs.h
new file mode 100644
index 0000000..7054cbf
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/irqs.h
@@ -0,0 +1,4 @@
+#define IRQ_LOCALTIMER 29
+#define IRQ_LOCALWDOG 30
+
+#define NR_IRQS 128
diff --git a/arch/arm/mach-vexpress/include/mach/memory.h b/arch/arm/mach-vexpress/include/mach/memory.h
new file mode 100644
index 0000000..be28232
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/memory.h
@@ -0,0 +1,25 @@
+/*
+ * arch/arm/mach-vexpress/include/mach/memory.h
+ *
+ * Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#define PHYS_OFFSET UL(0x60000000)
+
+#endif
diff --git a/arch/arm/mach-vexpress/include/mach/motherboard.h b/arch/arm/mach-vexpress/include/mach/motherboard.h
new file mode 100644
index 0000000..98a8ded
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/motherboard.h
@@ -0,0 +1,121 @@
+#ifndef __MACH_MOTHERBOARD_H
+#define __MACH_MOTHERBOARD_H
+
+/*
+ * Physical addresses, offset from V2M_PA_CS0-3
+ */
+#define V2M_NOR0 (V2M_PA_CS0)
+#define V2M_NOR1 (V2M_PA_CS1)
+#define V2M_SRAM (V2M_PA_CS2)
+#define V2M_VIDEO_SRAM (V2M_PA_CS3 + 0x00000000)
+#define V2M_LAN9118 (V2M_PA_CS3 + 0x02000000)
+#define V2M_ISP1761 (V2M_PA_CS3 + 0x03000000)
+
+/*
+ * Physical addresses, offset from V2M_PA_CS7
+ */
+#define V2M_SYSREGS (V2M_PA_CS7 + 0x00000000)
+#define V2M_SYSCTL (V2M_PA_CS7 + 0x00001000)
+#define V2M_SERIAL_BUS_PCI (V2M_PA_CS7 + 0x00002000)
+
+#define V2M_AACI (V2M_PA_CS7 + 0x00004000)
+#define V2M_MMCI (V2M_PA_CS7 + 0x00005000)
+#define V2M_KMI0 (V2M_PA_CS7 + 0x00006000)
+#define V2M_KMI1 (V2M_PA_CS7 + 0x00007000)
+
+#define V2M_UART0 (V2M_PA_CS7 + 0x00009000)
+#define V2M_UART1 (V2M_PA_CS7 + 0x0000a000)
+#define V2M_UART2 (V2M_PA_CS7 + 0x0000b000)
+#define V2M_UART3 (V2M_PA_CS7 + 0x0000c000)
+
+#define V2M_WDT (V2M_PA_CS7 + 0x0000f000)
+
+#define V2M_TIMER01 (V2M_PA_CS7 + 0x00011000)
+#define V2M_TIMER23 (V2M_PA_CS7 + 0x00012000)
+
+#define V2M_SERIAL_BUS_DVI (V2M_PA_CS7 + 0x00016000)
+#define V2M_RTC (V2M_PA_CS7 + 0x00017000)
+
+#define V2M_CF (V2M_PA_CS7 + 0x0001a000)
+#define V2M_CLCD (V2M_PA_CS7 + 0x0001f000)
+
+#define V2M_SYS_ID (V2M_SYSREGS + 0x000)
+#define V2M_SYS_SW (V2M_SYSREGS + 0x004)
+#define V2M_SYS_LED (V2M_SYSREGS + 0x008)
+#define V2M_SYS_100HZ (V2M_SYSREGS + 0x024)
+#define V2M_SYS_FLAGS (V2M_SYSREGS + 0x030)
+#define V2M_SYS_FLAGSSET (V2M_SYSREGS + 0x030)
+#define V2M_SYS_FLAGSCLR (V2M_SYSREGS + 0x034)
+#define V2M_SYS_NVFLAGS (V2M_SYSREGS + 0x038)
+#define V2M_SYS_NVFLAGSSET (V2M_SYSREGS + 0x038)
+#define V2M_SYS_NVFLAGSCLR (V2M_SYSREGS + 0x03c)
+#define V2M_SYS_MCI (V2M_SYSREGS + 0x048)
+#define V2M_SYS_FLASH (V2M_SYSREGS + 0x03c)
+#define V2M_SYS_CFGSW (V2M_SYSREGS + 0x058)
+#define V2M_SYS_24MHZ (V2M_SYSREGS + 0x05c)
+#define V2M_SYS_MISC (V2M_SYSREGS + 0x060)
+#define V2M_SYS_DMA (V2M_SYSREGS + 0x064)
+#define V2M_SYS_PROCID0 (V2M_SYSREGS + 0x084)
+#define V2M_SYS_PROCID1 (V2M_SYSREGS + 0x088)
+#define V2M_SYS_CFGDATA (V2M_SYSREGS + 0x0a0)
+#define V2M_SYS_CFGCTRL (V2M_SYSREGS + 0x0a4)
+#define V2M_SYS_CFGSTAT (V2M_SYSREGS + 0x0a8)
+
+#define V2M_TIMER0 (V2M_TIMER01 + 0x000)
+#define V2M_TIMER1 (V2M_TIMER01 + 0x020)
+
+#define V2M_TIMER2 (V2M_TIMER23 + 0x000)
+#define V2M_TIMER3 (V2M_TIMER23 + 0x020)
+
+
+/*
+ * Interrupts. Those in {} are for AMBA devices
+ */
+#define IRQ_V2M_WDT { (32 + 0) }
+#define IRQ_V2M_TIMER0 (32 + 2)
+#define IRQ_V2M_TIMER1 (32 + 2)
+#define IRQ_V2M_TIMER2 (32 + 3)
+#define IRQ_V2M_TIMER3 (32 + 3)
+#define IRQ_V2M_RTC { (32 + 4) }
+#define IRQ_V2M_UART0 { (32 + 5) }
+#define IRQ_V2M_UART1 { (32 + 6) }
+#define IRQ_V2M_UART2 { (32 + 7) }
+#define IRQ_V2M_UART3 { (32 + 8) }
+#define IRQ_V2M_MMCI { (32 + 9), (32 + 10) }
+#define IRQ_V2M_AACI { (32 + 11) }
+#define IRQ_V2M_KMI0 { (32 + 12) }
+#define IRQ_V2M_KMI1 { (32 + 13) }
+#define IRQ_V2M_CLCD { (32 + 14) }
+#define IRQ_V2M_LAN9118 (32 + 15)
+#define IRQ_V2M_ISP1761 (32 + 16)
+#define IRQ_V2M_PCIE (32 + 17)
+
+
+/*
+ * Configuration
+ */
+#define SYS_CFG_START (1 << 31)
+#define SYS_CFG_WRITE (1 << 30)
+#define SYS_CFG_OSC (1 << 20)
+#define SYS_CFG_VOLT (2 << 20)
+#define SYS_CFG_AMP (3 << 20)
+#define SYS_CFG_TEMP (4 << 20)
+#define SYS_CFG_RESET (5 << 20)
+#define SYS_CFG_SCC (6 << 20)
+#define SYS_CFG_MUXFPGA (7 << 20)
+#define SYS_CFG_SHUTDOWN (8 << 20)
+#define SYS_CFG_REBOOT (9 << 20)
+#define SYS_CFG_DVIMODE (11 << 20)
+#define SYS_CFG_POWER (12 << 20)
+#define SYS_CFG_SITE_MB (0 << 16)
+#define SYS_CFG_SITE_DB1 (1 << 16)
+#define SYS_CFG_SITE_DB2 (2 << 16)
+#define SYS_CFG_STACK(n) ((n) << 12)
+
+#define SYS_CFG_ERR (1 << 1)
+#define SYS_CFG_COMPLETE (1 << 0)
+
+int v2m_cfg_write(u32 devfn, u32 data);
+int v2m_cfg_read(u32 devfn, u32 *data);
+
+#endif
diff --git a/arch/arm/mach-vexpress/include/mach/system.h b/arch/arm/mach-vexpress/include/mach/system.h
new file mode 100644
index 0000000..899a4e6
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/system.h
@@ -0,0 +1,37 @@
+/*
+ * arch/arm/mach-vexpress/include/mach/system.h
+ *
+ * Copyright (C) 2003 ARM Limited
+ * Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+static inline void arch_idle(void)
+{
+ /*
+ * This should do all the clock switching
+ * and wait for interrupt tricks
+ */
+ cpu_do_idle();
+}
+
+static inline void arch_reset(char mode, const char *cmd)
+{
+}
+
+#endif
diff --git a/arch/arm/mach-vexpress/include/mach/timex.h b/arch/arm/mach-vexpress/include/mach/timex.h
new file mode 100644
index 0000000..00029ba
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/timex.h
@@ -0,0 +1,23 @@
+/*
+ * arch/arm/mach-vexpress/include/mach/timex.h
+ *
+ * RealView architecture timex specifications
+ *
+ * Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define CLOCK_TICK_RATE (50000000 / 16)
diff --git a/arch/arm/mach-vexpress/include/mach/uncompress.h b/arch/arm/mach-vexpress/include/mach/uncompress.h
new file mode 100644
index 0000000..7972c57
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/uncompress.h
@@ -0,0 +1,52 @@
+/*
+ * arch/arm/mach-vexpress/include/mach/uncompress.h
+ *
+ * Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#define AMBA_UART_DR(base) (*(volatile unsigned char *)((base) + 0x00))
+#define AMBA_UART_LCRH(base) (*(volatile unsigned char *)((base) + 0x2c))
+#define AMBA_UART_CR(base) (*(volatile unsigned char *)((base) + 0x30))
+#define AMBA_UART_FR(base) (*(volatile unsigned char *)((base) + 0x18))
+
+#define get_uart_base() (0x10000000 + 0x00009000)
+
+/*
+ * This does not append a newline
+ */
+static inline void putc(int c)
+{
+ unsigned long base = get_uart_base();
+
+ while (AMBA_UART_FR(base) & (1 << 5))
+ barrier();
+
+ AMBA_UART_DR(base) = c;
+}
+
+static inline void flush(void)
+{
+ unsigned long base = get_uart_base();
+
+ while (AMBA_UART_FR(base) & (1 << 3))
+ barrier();
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
diff --git a/arch/arm/mach-vexpress/include/mach/vmalloc.h b/arch/arm/mach-vexpress/include/mach/vmalloc.h
new file mode 100644
index 0000000..f43a36e
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/vmalloc.h
@@ -0,0 +1,21 @@
+/*
+ * arch/arm/mach-vexpress/include/mach/vmalloc.h
+ *
+ * Copyright (C) 2003 ARM Limited
+ * Copyright (C) 2000 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#define VMALLOC_END 0xf8000000UL
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
new file mode 100644
index 0000000..18d1581
--- /dev/null
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -0,0 +1,319 @@
+/*
+ * Versatile Express V2M Motherboard Support
+ */
+#include <linux/init.h>
+#include <linux/sysdev.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/mmci.h>
+#include <linux/platform_device.h>
+#include <linux/smsc911x.h>
+#include <linux/io.h>
+#include <linux/usb/isp1760.h>
+
+#include <asm/clkdev.h>
+#include <asm/sizes.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/hardware/arm_timer.h>
+
+#include <mach/clkdev.h>
+#include <mach/motherboard.h>
+
+#include <plat/timer-sp.h>
+
+#include "core.h"
+
+#define V2M_PA_CS0 0x40000000
+#define V2M_PA_CS1 0x44000000
+#define V2M_PA_CS2 0x48000000
+#define V2M_PA_CS3 0x4c000000
+#define V2M_PA_CS7 0x10000000
+
+static struct map_desc v2m_io_desc[] __initdata = {
+ {
+ .virtual = __MMIO_P2V(V2M_PA_CS7),
+ .pfn = __phys_to_pfn(V2M_PA_CS7),
+ .length = SZ_128K,
+ .type = MT_DEVICE,
+ },
+};
+
+void __init v2m_map_io(struct map_desc *tile, size_t num)
+{
+ iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
+ iotable_init(tile, num);
+}
+
+
+static void v2m_timer_init(void)
+{
+ writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
+ writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
+
+ sp804_clocksource_init(MMIO_P2V(V2M_TIMER1));
+ sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0);
+}
+
+struct sys_timer v2m_timer = {
+ .init = v2m_timer_init,
+};
+
+
+int v2m_cfg_write(u32 devfn, u32 data)
+{
+ /* Configuration interface broken? */
+ u32 val;
+
+ printk("%s: writing %08x to %08x\n", __func__, data, devfn);
+
+ devfn |= SYS_CFG_START | SYS_CFG_WRITE;
+
+ val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
+ writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
+
+ writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
+ writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
+
+ do {
+ val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
+ } while (val == 0);
+
+ return !!(val & SYS_CFG_ERR);
+}
+
+int v2m_cfg_read(u32 devfn, u32 *data)
+{
+ u32 val;
+
+ devfn |= SYS_CFG_START;
+
+ writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
+ writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
+
+ mb();
+
+ do {
+ cpu_relax();
+ val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
+ } while (val == 0);
+
+ *data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
+
+ return !!(val & SYS_CFG_ERR);
+}
+
+
+static struct resource v2m_pcie_i2c_resource = {
+ .start = V2M_SERIAL_BUS_PCI,
+ .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device v2m_pcie_i2c_device = {
+ .name = "versatile-i2c",
+ .id = 0,
+ .num_resources = 1,
+ .resource = &v2m_pcie_i2c_resource,
+};
+
+static struct resource v2m_ddc_i2c_resource = {
+ .start = V2M_SERIAL_BUS_DVI,
+ .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device v2m_ddc_i2c_device = {
+ .name = "versatile-i2c",
+ .id = 1,
+ .num_resources = 1,
+ .resource = &v2m_ddc_i2c_resource,
+};
+
+static struct resource v2m_eth_resources[] = {
+ {
+ .start = V2M_LAN9118,
+ .end = V2M_LAN9118 + SZ_64K - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = IRQ_V2M_LAN9118,
+ .end = IRQ_V2M_LAN9118,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct smsc911x_platform_config v2m_eth_config = {
+ .flags = SMSC911X_USE_32BIT,
+ .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
+ .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
+ .phy_interface = PHY_INTERFACE_MODE_MII,
+};
+
+static struct platform_device v2m_eth_device = {
+ .name = "smsc911x",
+ .id = -1,
+ .resource = v2m_eth_resources,
+ .num_resources = ARRAY_SIZE(v2m_eth_resources),
+ .dev.platform_data = &v2m_eth_config,
+};
+
+static struct resource v2m_usb_resources[] = {
+ {
+ .start = V2M_ISP1761,
+ .end = V2M_ISP1761 + SZ_128K - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = IRQ_V2M_ISP1761,
+ .end = IRQ_V2M_ISP1761,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct isp1760_platform_data v2m_usb_config = {
+ .is_isp1761 = true,
+ .bus_width_16 = false,
+ .port1_otg = true,
+ .analog_oc = false,
+ .dack_polarity_high = false,
+ .dreq_polarity_high = false,
+};
+
+static struct platform_device v2m_usb_device = {
+ .name = "isp1760",
+ .id = -1,
+ .resource = v2m_usb_resources,
+ .num_resources = ARRAY_SIZE(v2m_usb_resources),
+ .dev.platform_data = &v2m_usb_config,
+};
+
+static int v2m_flash_init(void)
+{
+ writel(0, MMIO_P2V(V2M_SYS_FLASH));
+ return 0;
+}
+
+static void v2m_flash_exit(void)
+{
+ writel(0, MMIO_P2V(V2M_SYS_FLASH));
+}
+
+static void v2m_flash_set_vpp(int on)
+{
+ writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
+}
+
+static struct flash_platform_data v2m_flash_data = {
+ .map_name = "cfi_probe",
+ .width = 4,
+ .init = v2m_flash_init,
+ .exit = v2m_flash_exit,
+ .set_vpp = v2m_flash_set_vpp,
+};
+
+static struct resource v2m_flash_resources[] = {
+ {
+ .start = V2M_NOR0,
+ .end = V2M_NOR0 + SZ_64M - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = V2M_NOR1,
+ .end = V2M_NOR1 + SZ_64M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device v2m_flash_device = {
+ .name = "armflash",
+ .id = -1,
+ .resource = v2m_flash_resources,
+ .num_resources = ARRAY_SIZE(v2m_flash_resources),
+ .dev.platform_data = &v2m_flash_data,
+};
+
+
+static unsigned int v2m_mmci_status(struct device *dev)
+{
+ return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
+}
+
+static struct mmci_platform_data v2m_mmci_data = {
+ .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
+ .status = v2m_mmci_status,
+};
+
+static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL);
+static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data);
+static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL);
+static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL);
+static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
+static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
+static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
+static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
+static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL);
+static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL);
+
+static struct amba_device *v2m_amba_devs[] __initdata = {
+ &aaci_device,
+ &mmci_device,
+ &kmi0_device,
+ &kmi1_device,
+ &uart0_device,
+ &uart1_device,
+ &uart2_device,
+ &uart3_device,
+ &wdt_device,
+ &rtc_device,
+};
+
+
+/*
+ * These are fixed clocks.
+ */
+static struct clk osc2_clk = {
+ .rate = 24000000,
+};
+
+static struct clk_lookup v2m_lookups[] = {
+ { /* UART0 */
+ .dev_id = "mb:uart0",
+ .clk = &osc2_clk,
+ }, { /* UART1 */
+ .dev_id = "mb:uart1",
+ .clk = &osc2_clk,
+ }, { /* UART2 */
+ .dev_id = "mb:uart2",
+ .clk = &osc2_clk,
+ }, { /* UART3 */
+ .dev_id = "mb:uart3",
+ .clk = &osc2_clk,
+ }, { /* KMI0 */
+ .dev_id = "mb:kmi0",
+ .clk = &osc2_clk,
+ }, { /* KMI1 */
+ .dev_id = "mb:kmi1",
+ .clk = &osc2_clk,
+ }, { /* MMC0 */
+ .dev_id = "mb:mmci",
+ .clk = &osc2_clk,
+ },
+};
+
+static int __init v2m_init(void)
+{
+ int i;
+
+ clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
+
+ platform_device_register(&v2m_pcie_i2c_device);
+ platform_device_register(&v2m_ddc_i2c_device);
+ platform_device_register(&v2m_flash_device);
+ platform_device_register(&v2m_eth_device);
+ platform_device_register(&v2m_usb_device);
+
+ for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
+ amba_device_register(v2m_amba_devs[i], &iomem_resource);
+
+ return 0;
+}
+arch_initcall(v2m_init);
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 4cc3807..913c1da 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -556,7 +556,7 @@ config I2C_STU300
config I2C_VERSATILE
tristate "ARM Versatile/Realview I2C bus support"
- depends on ARCH_VERSATILE || ARCH_REALVIEW
+ depends on ARCH_VERSATILE || ARCH_REALVIEW || ARCH_VEXPRESS
select I2C_ALGOBIT
help
Say yes if you want to support the I2C serial bus on ARMs Versatile
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