[ARM] 5590/1: Add basic support for ST Nomadik 8815 SoC and evaluation board

This patch adds the basic infrastructure for the Nomadik 8815 CPU and the "Nomadik Hardware Kit" NHK8815. This patch only includes the serial console and core stuff, no drivers. Signed-off-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Andrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
author: Alessandro Rubini <rubini@gnudd.com> 2009-07-02 14:06:47 -0400
committer: Russell King <rmk+kernel@arm.linux.org.uk> 2009-07-02 16:20:44 -0400
commit: 28ad94ec61dc60207dbffdb95ff870c617fbb832 (patch)
tree: 4ee4d2fc06f98d70c0f7f803179b94638bc0e850
parent: 8c81b52422147b4b09f5adb8d0c6963342a336c6 (diff)
23 files changed, 883 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index aef63c8e3d2d..d8cfd7065011 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -327,6 +327,19 @@ config ARCH_H720X
        help
          This enables support for systems based on the Hynix HMS720x
+config ARCH_NOMADIK
+        bool "STMicroelectronics Nomadik"
+        select ARM_AMBA
+        select ARM_VIC
+        select CPU_ARM926T
+        select HAVE_CLK
+        select COMMON_CLKDEV
+        select GENERIC_TIME
+        select GENERIC_CLOCKEVENTS
+        help
+          Support for the Nomadik platform by ST-Ericsson
 config ARCH_IOP13XX
        bool "IOP13xx-based"
        depends on MMU
@@ -716,6 +729,8 @@ source "arch/arm/mach-at91/Kconfig"
 source "arch/arm/plat-mxc/Kconfig"
+source "arch/arm/mach-nomadik/Kconfig"
 source "arch/arm/mach-netx/Kconfig"
 source "arch/arm/mach-ns9xxx/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index c877d6df23d1..97cca075d0f9 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -137,6 +137,7 @@ machine-$(CONFIG_ARCH_MX1)		:= mx1
 machine-$(CONFIG_ARCH_MX2)              := mx2
 machine-$(CONFIG_ARCH_MX3)              := mx3
 machine-$(CONFIG_ARCH_NETX)             := netx
+machine-$(CONFIG_ARCH_NOMADIK)          := nomadik
 machine-$(CONFIG_ARCH_NS9XXX)           := ns9xxx
 machine-$(CONFIG_ARCH_OMAP1)            := omap1
 machine-$(CONFIG_ARCH_OMAP2)            := omap2
diff --git a/arch/arm/mach-nomadik/Kconfig b/arch/arm/mach-nomadik/Kconfig
new file mode 100644
index 000000000000..abce23461061
--- /dev/null
+++ b/arch/arm/mach-nomadik/Kconfig
@@ -0,0 +1,14 @@
+if ARCH_NOMADIK
+menu "Nomadik boards"
+config MACH_NOMADIK_8815NHK
+        bool "ST 8815 Nomadik Hardware Kit (evaluation board)"
+        select NOMADIK_8815
+endmenu
+config NOMADIK_8815
+        bool
+endif
diff --git a/arch/arm/mach-nomadik/Makefile b/arch/arm/mach-nomadik/Makefile
new file mode 100644
index 000000000000..fa97769fe707
--- /dev/null
+++ b/arch/arm/mach-nomadik/Makefile
@@ -0,0 +1,16 @@
+#
+# Makefile for the linux kernel.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+# Object file lists.
+obj-y                   += clock.o timer.o
+# Cpu revision
+obj-$(CONFIG_NOMADIK_8815) += cpu-8815.o
+# Specific board support
+obj-$(CONFIG_MACH_NOMADIK_8815NHK) += board-nhk8815.o
diff --git a/arch/arm/mach-nomadik/Makefile.boot b/arch/arm/mach-nomadik/Makefile.boot
new file mode 100644
index 000000000000..c7e75acfe6c9
--- /dev/null
+++ b/arch/arm/mach-nomadik/Makefile.boot
@@ -0,0 +1,4 @@
+   zreladdr-y   := 0x00008000
+params_phys-y   := 0x00000100
+initrd_phys-y   := 0x00800000
diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c
new file mode 100644
index 000000000000..eebca614d36b
--- /dev/null
+++ b/arch/arm/mach-nomadik/board-nhk8815.c
@@ -0,0 +1,75 @@
+/*
+ *  linux/arch/arm/mach-nomadik/board-8815nhk.c
+ *
+ *  Copyright (C) STMicroelectronics
+ *
+ * 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.
+ *
+ *  NHK15 board specifc driver definition
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/amba/bus.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <mach/setup.h>
+#include "clock.h"
+#define __MEM_4K_RESOURCE(x) \
+        .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
+static struct amba_device uart0_device = {
+        .dev = { .init_name = "uart0" },
+        __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
+        .irq = {IRQ_UART0, NO_IRQ},
+};
+static struct amba_device uart1_device = {
+        .dev = { .init_name = "uart1" },
+        __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
+        .irq = {IRQ_UART1, NO_IRQ},
+};
+static struct amba_device *amba_devs[] __initdata = {
+        &uart0_device,
+        &uart1_device,
+};
+/* We have a fixed clock alone, by now */
+static struct clk nhk8815_clk_48 = {
+        .rate = 48*1000*1000,
+};
+static struct platform_device *nhk8815_platform_devices[] __initdata = {
+        /* currently empty, will add keypad, touchscreen etc */
+};
+static void __init nhk8815_platform_init(void)
+{
+        int i;
+        cpu8815_platform_init();
+        platform_add_devices(nhk8815_platform_devices,
+                             ARRAY_SIZE(nhk8815_platform_devices));
+        for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+                nmdk_clk_create(&nhk8815_clk_48, amba_devs[i]->dev.init_name);
+                amba_device_register(amba_devs[i], &iomem_resource);
+        }
+}
+MACHINE_START(NOMADIK, "NHK8815")
+        /* Maintainer: ST MicroElectronics */
+        .phys_io        = NOMADIK_UART0_BASE,
+        .io_pg_offst    = (IO_ADDRESS(NOMADIK_UART0_BASE) >> 18) & 0xfffc,
+        .boot_params    = 0x100,
+        .map_io         = cpu8815_map_io,
+        .init_irq       = cpu8815_init_irq,
+        .timer          = &nomadik_timer,
+        .init_machine   = nhk8815_platform_init,
+MACHINE_END
diff --git a/arch/arm/mach-nomadik/clock.c b/arch/arm/mach-nomadik/clock.c
new file mode 100644
index 000000000000..9f92502a0083
--- /dev/null
+++ b/arch/arm/mach-nomadik/clock.c
@@ -0,0 +1,45 @@
+/*
+ *  linux/arch/arm/mach-nomadik/clock.c
+ *
+ *  Copyright (C) 2009 Alessandro Rubini
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <asm/clkdev.h>
+#include "clock.h"
+/*
+ * The nomadik board uses generic clocks, but the serial pl011 file
+ * calls clk_enable(), clk_disable(), clk_get_rate(), so we provide them
+ */
+unsigned long clk_get_rate(struct clk *clk)
+{
+        return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+/* enable and disable do nothing */
+int clk_enable(struct clk *clk)
+{
+        return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+/* Create a clock structure with the given name */
+int nmdk_clk_create(struct clk *clk, const char *dev_id)
+{
+        struct clk_lookup *clkdev;
+        clkdev = clkdev_alloc(clk, NULL, dev_id);
+        if (!clkdev)
+                return -ENOMEM;
+        clkdev_add(clkdev);
+        return 0;
+}
diff --git a/arch/arm/mach-nomadik/clock.h b/arch/arm/mach-nomadik/clock.h
new file mode 100644
index 000000000000..235faec7f627
--- /dev/null
+++ b/arch/arm/mach-nomadik/clock.h
@@ -0,0 +1,14 @@
+/*
+ *  linux/arch/arm/mach-nomadik/clock.h
+ *
+ *  Copyright (C) 2009 Alessandro Rubini
+ *
+ * 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.
+ */
+struct clk {
+        unsigned long           rate;
+};
+extern int nmdk_clk_create(struct clk *clk, const char *dev_id);
diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c
new file mode 100644
index 000000000000..dec42da6956a
--- /dev/null
+++ b/arch/arm/mach-nomadik/cpu-8815.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright STMicroelectronics, 2007.
+ *
+ *  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
+ */
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <asm/mach/map.h>
+#include <asm/hardware/vic.h>
+/* All SoC devices live in the same area (see hardware.h) */
+static struct map_desc nomadik_io_desc[] __initdata = {
+        {
+                .virtual =      NOMADIK_IO_VIRTUAL,
+                .pfn =          __phys_to_pfn(NOMADIK_IO_PHYSICAL),
+                .length =       NOMADIK_IO_SIZE,
+                .type =         MT_DEVICE,
+        }
+        /* static ram and secured ram may be added later */
+};
+void __init cpu8815_map_io(void)
+{
+        iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
+}
+void __init cpu8815_init_irq(void)
+{
+        /* This modified VIC cell has two register blocks, at 0 and 0x20 */
+        vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START +  0, ~0, 0);
+        vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
+}
+/*
+ * This function is called from the board init ("init_machine").
+ * Currently nothing is done as we can't register amba devs so early.
+ */
+ void __init cpu8815_platform_init(void)
+{
+         return;
+}
diff --git a/arch/arm/mach-nomadik/include/mach/clkdev.h b/arch/arm/mach-nomadik/include/mach/clkdev.h
new file mode 100644
index 000000000000..04b37a89801c
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/clkdev.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+#endif
diff --git a/arch/arm/mach-nomadik/include/mach/debug-macro.S b/arch/arm/mach-nomadik/include/mach/debug-macro.S
new file mode 100644
index 000000000000..e876990e1569
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/debug-macro.S
@@ -0,0 +1,22 @@
+/*
+ * 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.
+ *
+*/
+                .macro  addruart,rx
+                mrc     p15, 0, \rx, c1, c0
+                tst     \rx, #1                 @ MMU enabled?
+                moveq   \rx, #0x10000000        @ physical base address
+                movne   \rx, #0xf0000000        @ virtual base
+                add     \rx, \rx, #0x00100000
+                add     \rx, \rx, #0x000fb000
+                .endm
+#include <asm/hardware/debug-pl01x.S>
diff --git a/arch/arm/mach-nomadik/include/mach/entry-macro.S b/arch/arm/mach-nomadik/include/mach/entry-macro.S
new file mode 100644
index 000000000000..49f1aa3bb420
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/entry-macro.S
@@ -0,0 +1,43 @@
+/*
+ * Low-level IRQ helper macros for Nomadik platforms
+ *
+ * This file is licensed under  the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+        .macro  disable_fiq
+        .endm
+        .macro  get_irqnr_preamble, base, tmp
+        ldr     \base, =IO_ADDRESS(NOMADIK_IC_BASE)
+        .endm
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        /* This stanza gets the irq mask from one of two status registers */
+        mov     \irqnr, #0
+        ldr     \irqstat, [\base, #VIC_REG_IRQSR0]      @ get masked status
+        cmp     \irqstat, #0
+        bne     1001f
+        add     \irqnr, \irqnr, #32
+        ldr     \irqstat, [\base, #VIC_REG_IRQSR1]      @ get masked status
+1001:   tst     \irqstat, #15
+        bne     1002f
+        add     \irqnr, \irqnr, #4
+        movs    \irqstat, \irqstat, lsr #4
+        bne     1001b
+1002:   tst     \irqstat, #1
+        bne     1003f
+        add     \irqnr, \irqnr, #1
+        movs    \irqstat, \irqstat, lsr #1
+        bne     1002b
+1003:   /* EQ will be set if no irqs pending */
+        .endm
diff --git a/arch/arm/mach-nomadik/include/mach/hardware.h b/arch/arm/mach-nomadik/include/mach/hardware.h
new file mode 100644
index 000000000000..6316dba3bfc8
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/hardware.h
@@ -0,0 +1,90 @@
+/*
+ * This file contains the hardware definitions of the Nomadik.
+ *
+ * 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_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+/* Nomadik registers live from 0x1000.0000 to 0x1023.0000 -- currently */
+#define NOMADIK_IO_VIRTUAL      0xF0000000      /* VA of IO  */
+#define NOMADIK_IO_PHYSICAL     0x10000000      /* PA of IO */
+#define NOMADIK_IO_SIZE         0x00300000      /* 3MB for all regs */
+/* used in C code, so cast to proper type */
+#define io_p2v(x) ((void __iomem *)(x) \
+                        - NOMADIK_IO_PHYSICAL + NOMADIK_IO_VIRTUAL)
+#define io_v2p(x) ((unsigned long)(x) \
+                        - NOMADIK_IO_VIRTUAL + NOMADIK_IO_PHYSICAL)
+/* used in asm code, so no casts */
+#define IO_ADDRESS(x) ((x) - NOMADIK_IO_PHYSICAL + NOMADIK_IO_VIRTUAL)
+/*
+ *   Base address defination for Nomadik Onchip Logic Block
+ */
+#define NOMADIK_FSMC_BASE       0x10100000      /* FSMC registers */
+#define NOMADIK_SDRAMC_BASE     0x10110000      /* SDRAM Controller */
+#define NOMADIK_CLCDC_BASE      0x10120000      /* CLCD Controller */
+#define NOMADIK_MDIF_BASE       0x10120000      /* MDIF */
+#define NOMADIK_DMA0_BASE       0x10130000      /* DMA0 Controller */
+#define NOMADIK_IC_BASE         0x10140000      /* Vectored Irq Controller */
+#define NOMADIK_DMA1_BASE       0x10150000      /* DMA1 Controller */
+#define NOMADIK_USB_BASE        0x10170000      /* USB-OTG conf reg base */
+#define NOMADIK_CRYP_BASE       0x10180000      /* Crypto processor */
+#define NOMADIK_SHA1_BASE       0x10190000      /* SHA-1 Processor */
+#define NOMADIK_XTI_BASE        0x101A0000      /* XTI */
+#define NOMADIK_RNG_BASE        0x101B0000      /* Random number generator */
+#define NOMADIK_SRC_BASE        0x101E0000      /* SRC base */
+#define NOMADIK_WDOG_BASE       0x101E1000      /* Watchdog */
+#define NOMADIK_MTU0_BASE       0x101E2000      /* Multiple Timer 0 */
+#define NOMADIK_MTU1_BASE       0x101E3000      /* Multiple Timer 1 */
+#define NOMADIK_GPIO0_BASE      0x101E4000      /* GPIO0 */
+#define NOMADIK_GPIO1_BASE      0x101E5000      /* GPIO1 */
+#define NOMADIK_GPIO2_BASE      0x101E6000      /* GPIO2 */
+#define NOMADIK_GPIO3_BASE      0x101E7000      /* GPIO3 */
+#define NOMADIK_RTC_BASE        0x101E8000      /* Real Time Clock base */
+#define NOMADIK_PMU_BASE        0x101E9000      /* Power Management Unit */
+#define NOMADIK_OWM_BASE        0x101EA000      /* One wire master */
+#define NOMADIK_SCR_BASE        0x101EF000      /* Secure Control registers */
+#define NOMADIK_MSP2_BASE       0x101F0000      /* MSP 2 interface */
+#define NOMADIK_MSP1_BASE       0x101F1000      /* MSP 1 interface */
+#define NOMADIK_UART2_BASE      0x101F2000      /* UART 2 interface */
+#define NOMADIK_SSIRx_BASE      0x101F3000      /* SSI 8-ch rx interface */
+#define NOMADIK_SSITx_BASE      0x101F4000      /* SSI 8-ch tx interface */
+#define NOMADIK_MSHC_BASE       0x101F5000      /* Memory Stick(Pro) Host */
+#define NOMADIK_SDI_BASE        0x101F6000      /* SD-card/MM-Card */
+#define NOMADIK_I2C1_BASE       0x101F7000      /* I2C1 interface */
+#define NOMADIK_I2C0_BASE       0x101F8000      /* I2C0 interface */
+#define NOMADIK_MSP0_BASE       0x101F9000      /* MSP 0 interface  */
+#define NOMADIK_FIRDA_BASE      0x101FA000      /* FIrDA interface  */
+#define NOMADIK_UART1_BASE      0x101FB000      /* UART 1 interface */
+#define NOMADIK_SSP_BASE        0x101FC000      /* SSP interface  */
+#define NOMADIK_UART0_BASE      0x101FD000      /* UART 0 interface */
+#define NOMADIK_SGA_BASE        0x101FE000      /* SGA interface */
+#define NOMADIK_L2CC_BASE       0x10210000      /* L2 Cache controller */
+/* Other ranges, not for p2v/v2p */
+#define NOMADIK_BACKUP_RAM      0x80010000
+#define NOMADIK_EBROM           0x80000000      /* Embedded boot ROM */
+#define NOMADIK_HAMACV_DMEM_BASE 0xA0100000     /* HAMACV Data Memory Start */
+#define NOMADIK_HAMACV_DMEM_END 0xA01FFFFF      /* HAMACV Data Memory End */
+#define NOMADIK_HAMACA_DMEM     0xA0200000      /* HAMACA Data Memory Space */
+#define NOMADIK_FSMC_VA         IO_ADDRESS(NOMADIK_FSMC_BASE)
+#define NOMADIK_MTU0_VA         IO_ADDRESS(NOMADIK_MTU0_BASE)
+#define NOMADIK_MTU1_VA         IO_ADDRESS(NOMADIK_MTU1_BASE)
+#endif /* __ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/mach-nomadik/include/mach/io.h b/arch/arm/mach-nomadik/include/mach/io.h
new file mode 100644
index 000000000000..2e1eca1b8243
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/io.h
@@ -0,0 +1,22 @@
+/*
+ * arch/arm/mach-nomadik/include/mach/io.h   (copied from mach-sa1100)
+ *
+ * Copyright (C) 1997-1999 Russell King
+ *
+ * Modifications:
+ *  06-12-1997  RMK     Created.
+ *  07-04-1999  RMK     Major cleanup
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+#define IO_SPACE_LIMIT 0xffffffff
+/*
+ * We don't actually have real ISA nor PCI buses, but there is so many
+ * drivers out there that might just work if we fake them...
+ */
+#define __io(a)         __typesafe_io(a)
+#define __mem_pci(a)    (a)
+#endif
diff --git a/arch/arm/mach-nomadik/include/mach/irqs.h b/arch/arm/mach-nomadik/include/mach/irqs.h
new file mode 100644
index 000000000000..8faabc560398
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/irqs.h
@@ -0,0 +1,82 @@
+/*
+ *  mach-nomadik/include/mach/irqs.h
+ *
+ *  Copyright (C) ST Microelectronics
+ *
+ * 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_IRQS_H
+#define __ASM_ARCH_IRQS_H
+#include <mach/hardware.h>
+#define IRQ_VIC_START           0       /* first VIC interrupt is 0 */
+/*
+ * Interrupt numbers generic for all Nomadik Chip cuts
+ */
+#define IRQ_WATCHDOG                    0
+#define IRQ_SOFTINT                     1
+#define IRQ_CRYPTO                      2
+#define IRQ_OWM                         3
+#define IRQ_MTU0                        4
+#define IRQ_MTU1                        5
+#define IRQ_GPIO0                       6
+#define IRQ_GPIO1                       7
+#define IRQ_GPIO2                       8
+#define IRQ_GPIO3                       9
+#define IRQ_RTC_RTT                     10
+#define IRQ_SSP                         11
+#define IRQ_UART0                       12
+#define IRQ_DMA1                        13
+#define IRQ_CLCD_MDIF                   14
+#define IRQ_DMA0                        15
+#define IRQ_PWRFAIL                     16
+#define IRQ_UART1                       17
+#define IRQ_FIRDA                       18
+#define IRQ_MSP0                        19
+#define IRQ_I2C0                        20
+#define IRQ_I2C1                        21
+#define IRQ_SDMMC                       22
+#define IRQ_USBOTG                      23
+#define IRQ_SVA_IT0                     24
+#define IRQ_SVA_IT1                     25
+#define IRQ_SAA_IT0                     26
+#define IRQ_SAA_IT1                     27
+#define IRQ_UART2                       28
+#define IRQ_MSP2                        31
+#define IRQ_L2CC                        48
+#define IRQ_HPI                         49
+#define IRQ_SKE                         50
+#define IRQ_KP                          51
+#define IRQ_MEMST                       54
+#define IRQ_SGA_IT                      58
+#define IRQ_USBM                        60
+#define IRQ_MSP1                        62
+#define NOMADIK_SOC_NR_IRQS             64
+/* After chip-specific IRQ numbers we have the GPIO ones */
+#define NOMADIK_NR_GPIO                 128 /* last 4 not wired to pins */
+#define NOMADIK_GPIO_TO_IRQ(gpio)       ((gpio) + NOMADIK_SOC_NR_IRQS)
+#define NOMADIK_IRQ_TO_GPIO(irq)        ((irq) - NOMADIK_SOC_NR_IRQS)
+#define NR_IRQS                         NOMADIK_GPIO_TO_IRQ(NOMADIK_NR_GPIO)
+/* Following two are used by entry_macro.S, to access our dual-vic */
+#define VIC_REG_IRQSR0          0
+#define VIC_REG_IRQSR1          0x20
+#endif /* __ASM_ARCH_IRQS_H */
diff --git a/arch/arm/mach-nomadik/include/mach/memory.h b/arch/arm/mach-nomadik/include/mach/memory.h
new file mode 100644
index 000000000000..1e5689d98ecd
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/memory.h
@@ -0,0 +1,28 @@
+/*
+ *  mach-nomadik/include/mach/memory.h
+ *
+ *  Copyright (C) 1999 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
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET     UL(0x00000000)
+#endif
diff --git a/arch/arm/mach-nomadik/include/mach/mtu.h b/arch/arm/mach-nomadik/include/mach/mtu.h
new file mode 100644
index 000000000000..76da7f085330
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/mtu.h
@@ -0,0 +1,45 @@
+#ifndef __ASM_ARCH_MTU_H
+#define __ASM_ARCH_MTU_H
+/*
+ * The MTU device hosts four different counters, with 4 set of
+ * registers. These are register names.
+ */
+#define MTU_IMSC        0x00    /* Interrupt mask set/clear */
+#define MTU_RIS         0x04    /* Raw interrupt status */
+#define MTU_MIS         0x08    /* Masked interrupt status */
+#define MTU_ICR         0x0C    /* Interrupt clear register */
+/* per-timer registers take 0..3 as argument */
+#define MTU_LR(x)       (0x10 + 0x10 * (x) + 0x00)      /* Load value */
+#define MTU_VAL(x)      (0x10 + 0x10 * (x) + 0x04)      /* Current value */
+#define MTU_CR(x)       (0x10 + 0x10 * (x) + 0x08)      /* Control reg */
+#define MTU_BGLR(x)     (0x10 + 0x10 * (x) + 0x0c)      /* At next overflow */
+/* bits for the control register */
+#define MTU_CRn_ENA             0x80
+#define MTU_CRn_PERIODIC        0x40    /* if 0 = free-running */
+#define MTU_CRn_PRESCALE_MASK   0x0c
+#define MTU_CRn_PRESCALE_1              0x00
+#define MTU_CRn_PRESCALE_16             0x04
+#define MTU_CRn_PRESCALE_256            0x08
+#define MTU_CRn_32BITS          0x02
+#define MTU_CRn_ONESHOT         0x01    /* if 0 = wraps reloading from BGLR*/
+/* Other registers are usual amba/primecell registers, currently not used */
+#define MTU_ITCR        0xff0
+#define MTU_ITOP        0xff4
+#define MTU_PERIPH_ID0  0xfe0
+#define MTU_PERIPH_ID1  0xfe4
+#define MTU_PERIPH_ID2  0xfe8
+#define MTU_PERIPH_ID3  0xfeC
+#define MTU_PCELL0      0xff0
+#define MTU_PCELL1      0xff4
+#define MTU_PCELL2      0xff8
+#define MTU_PCELL3      0xffC
+#endif /* __ASM_ARCH_MTU_H */
diff --git a/arch/arm/mach-nomadik/include/mach/setup.h b/arch/arm/mach-nomadik/include/mach/setup.h
new file mode 100644
index 000000000000..a4e468cf63da
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/setup.h
@@ -0,0 +1,22 @@
+/*
+ * These symbols are needed for board-specific files to call their
+ * own cpu-specific files
+ */
+#ifndef __ASM_ARCH_SETUP_H
+#define __ASM_ARCH_SETUP_H
+#include <asm/mach/time.h>
+#include <linux/init.h>
+#ifdef CONFIG_NOMADIK_8815
+extern void cpu8815_map_io(void);
+extern void cpu8815_platform_init(void);
+extern void cpu8815_init_irq(void);
+extern struct sys_timer nomadik_timer;
+#endif /* NOMADIK_8815 */
+#endif /*  __ASM_ARCH_SETUP_H */
diff --git a/arch/arm/mach-nomadik/include/mach/system.h b/arch/arm/mach-nomadik/include/mach/system.h
new file mode 100644
index 000000000000..7119f688116e
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/system.h
@@ -0,0 +1,45 @@
+/*
+ *  mach-nomadik/include/mach/system.h
+ *
+ *  Copyright (C) 2008 STMicroelectronics
+ *
+ * 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
+#include <linux/io.h>
+#include <mach/hardware.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)
+{
+        void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
+        /* FIXME: use egpio when implemented */
+        /* Write anything to Reset status register */
+        writel(1, src_rstsr);
+}
+#endif
diff --git a/arch/arm/mach-nomadik/include/mach/timex.h b/arch/arm/mach-nomadik/include/mach/timex.h
new file mode 100644
index 000000000000..318b8896ce96
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/timex.h
@@ -0,0 +1,6 @@
+#ifndef __ASM_ARCH_TIMEX_H
+#define __ASM_ARCH_TIMEX_H
+#define CLOCK_TICK_RATE         2400000
+#endif
diff --git a/arch/arm/mach-nomadik/include/mach/uncompress.h b/arch/arm/mach-nomadik/include/mach/uncompress.h
new file mode 100644
index 000000000000..071003bc8456
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/uncompress.h
@@ -0,0 +1,63 @@
+/*
+ *  Copyright (C) 2008 STMicroelectronics
+ *
+ * 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_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+#include <asm/setup.h>
+#include <asm/io.h>
+#include <mach/hardware.h>
+/* we need the constants in amba/serial.h, but it refers to amba_device */
+struct amba_device;
+#include <linux/amba/serial.h>
+#define NOMADIK_UART_DR         0x101FB000
+#define NOMADIK_UART_LCRH       0x101FB02c
+#define NOMADIK_UART_CR         0x101FB030
+#define NOMADIK_UART_FR         0x101FB018
+static void putc(const char c)
+{
+        /* Do nothing if the UART is not enabled. */
+        if (!(readb(NOMADIK_UART_CR) & UART01x_CR_UARTEN))
+                return;
+        if (c == '\n')
+                putc('\r');
+        while (readb(NOMADIK_UART_FR) & UART01x_FR_TXFF)
+                barrier();
+        writeb(c, NOMADIK_UART_DR);
+}
+static void flush(void)
+{
+        if (!(readb(NOMADIK_UART_CR) & UART01x_CR_UARTEN))
+                return;
+        while (readb(NOMADIK_UART_FR) & UART01x_FR_BUSY)
+                barrier();
+}
+static inline void arch_decomp_setup(void)
+{
+}
+#define arch_decomp_wdog() /* nothing to do here */
+#endif /* __ASM_ARCH_UNCOMPRESS_H */
diff --git a/arch/arm/mach-nomadik/include/mach/vmalloc.h b/arch/arm/mach-nomadik/include/mach/vmalloc.h
new file mode 100644
index 000000000000..be12e31ea528
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/vmalloc.h
@@ -0,0 +1,2 @@
+#define VMALLOC_END       0xe8000000
diff --git a/arch/arm/mach-nomadik/timer.c b/arch/arm/mach-nomadik/timer.c
new file mode 100644
index 000000000000..d1738e7061d4
--- /dev/null
+++ b/arch/arm/mach-nomadik/timer.c
@@ -0,0 +1,164 @@
+/*
+ *  linux/arch/arm/mach-nomadik/timer.c
+ *
+ * Copyright (C) 2008 STMicroelectronics
+ * Copyright (C) 2009 Alessandro Rubini, somewhat based on at91sam926x
+ *
+ * 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.
+ */
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/clockchips.h>
+#include <linux/jiffies.h>
+#include <asm/mach/time.h>
+#include <mach/mtu.h>
+#define TIMER_CTRL      0x80    /* No divisor */
+#define TIMER_PERIODIC  0x40
+#define TIMER_SZ32BIT   0x02
+/* Initial value for SRC control register: all timers use MXTAL/8 source */
+#define SRC_CR_INIT_MASK        0x00007fff
+#define SRC_CR_INIT_VAL         0x2aaa8000
+static u32      nmdk_count;             /* accumulated count */
+static u32      nmdk_cycle;             /* write-once */
+static __iomem void *mtu_base;
+/*
+ * clocksource: the MTU device is a decrementing counters, so we negate
+ * the value being read.
+ */
+static cycle_t nmdk_read_timer(struct clocksource *cs)
+{
+        u32 count = readl(mtu_base + MTU_VAL(0));
+        return nmdk_count + nmdk_cycle - count;
+}
+static struct clocksource nmdk_clksrc = {
+        .name           = "mtu_0",
+        .rating         = 120,
+        .read           = nmdk_read_timer,
+        .shift          = 20,
+        .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+/*
+ * Clockevent device: currently only periodic mode is supported
+ */
+static void nmdk_clkevt_mode(enum clock_event_mode mode,
+                             struct clock_event_device *dev)
+{
+        unsigned long flags;
+        switch (mode) {
+        case CLOCK_EVT_MODE_PERIODIC:
+                /* enable interrupts -- and count current value? */
+                raw_local_irq_save(flags);
+                writel(readl(mtu_base + MTU_IMSC) | 1, mtu_base + MTU_IMSC);
+                raw_local_irq_restore(flags);
+                break;
+        case CLOCK_EVT_MODE_ONESHOT:
+                BUG(); /* Not supported, yet */
+                /* FALLTHROUGH */
+        case CLOCK_EVT_MODE_SHUTDOWN:
+        case CLOCK_EVT_MODE_UNUSED:
+                /* disable irq */
+                raw_local_irq_save(flags);
+                writel(readl(mtu_base + MTU_IMSC) & ~1, mtu_base + MTU_IMSC);
+                raw_local_irq_restore(flags);
+                break;
+        case CLOCK_EVT_MODE_RESUME:
+                break;
+        }
+}
+static struct clock_event_device nmdk_clkevt = {
+        .name           = "mtu_0",
+        .features       = CLOCK_EVT_FEAT_PERIODIC,
+        .shift          = 32,
+        .rating         = 100,
+        .set_mode       = nmdk_clkevt_mode,
+};
+/*
+ * IRQ Handler for the timer 0 of the MTU block. The irq is not shared
+ * as we are the only users of mtu0 by now.
+ */
+static irqreturn_t nmdk_timer_interrupt(int irq, void *dev_id)
+{
+        /* ack: "interrupt clear register" */
+        writel( 1 << 0, mtu_base + MTU_ICR);
+        /* we can't count lost ticks, unfortunately */
+        nmdk_count += nmdk_cycle;
+        nmdk_clkevt.event_handler(&nmdk_clkevt);
+        return IRQ_HANDLED;
+}
+/*
+ * Set up timer interrupt, and return the current time in seconds.
+ */
+static struct irqaction nmdk_timer_irq = {
+        .name           = "Nomadik Timer Tick",
+        .flags          = IRQF_DISABLED | IRQF_TIMER,
+        .handler        = nmdk_timer_interrupt,
+};
+static void nmdk_timer_reset(void)
+{
+        u32 cr;
+        writel(0, mtu_base + MTU_CR(0)); /* off */
+        /* configure load and background-load, and fire it up */
+        writel(nmdk_cycle, mtu_base + MTU_LR(0));
+        writel(nmdk_cycle, mtu_base + MTU_BGLR(0));
+        cr = MTU_CRn_PERIODIC | MTU_CRn_PRESCALE_1 | MTU_CRn_32BITS;
+        writel(cr, mtu_base + MTU_CR(0));
+        writel(cr | MTU_CRn_ENA, mtu_base + MTU_CR(0));
+}
+static void __init nmdk_timer_init(void)
+{
+        u32 src_cr;
+        unsigned long rate;
+        int bits;
+        rate = CLOCK_TICK_RATE; /* 2.4MHz */
+        nmdk_cycle = (rate + HZ/2) / HZ;
+        /* Configure timer sources in "system reset controller" ctrl reg */
+        src_cr = readl(io_p2v(NOMADIK_SRC_BASE));
+        src_cr &= SRC_CR_INIT_MASK;
+        src_cr |= SRC_CR_INIT_VAL;
+        writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
+        /* Save global pointer to mtu, used by functions above */
+        mtu_base = io_p2v(NOMADIK_MTU0_BASE);
+        /* Init the timer and register clocksource */
+        nmdk_timer_reset();
+        nmdk_clksrc.mult = clocksource_hz2mult(rate, nmdk_clksrc.shift);
+        bits =  8*sizeof(nmdk_count);
+        nmdk_clksrc.mask = CLOCKSOURCE_MASK(bits);
+        clocksource_register(&nmdk_clksrc);
+        /* Register irq and clockevents */
+        setup_irq(IRQ_MTU0, &nmdk_timer_irq);
+        nmdk_clkevt.mult = div_sc(rate, NSEC_PER_SEC, nmdk_clkevt.shift);
+        nmdk_clkevt.cpumask = cpumask_of(0);
+        clockevents_register_device(&nmdk_clkevt);
+}
+struct sys_timer nomadik_timer = {
+        .init           = nmdk_timer_init,
+};
author	Alessandro Rubini <rubini@gnudd.com>	2009-07-02 14:06:47 -0400
committer	Russell King <rmk+kernel@arm.linux.org.uk>	2009-07-02 16:20:44 -0400
commit	28ad94ec61dc60207dbffdb95ff870c617fbb832 (patch)
tree	4ee4d2fc06f98d70c0f7f803179b94638bc0e850
parent	8c81b52422147b4b09f5adb8d0c6963342a336c6 (diff)