diff options
23 files changed, 883 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index aef63c8e3d2..d8cfd706501 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 c877d6df23d..97cca075d0f 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 00000000000..abce2346106 --- /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 00000000000..fa97769fe70 --- /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 00000000000..c7e75acfe6c --- /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 00000000000..eebca614d36 --- /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 00000000000..9f92502a008 --- /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 00000000000..235faec7f62 --- /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 00000000000..dec42da6956 --- /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 00000000000..04b37a89801 --- /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 00000000000..e876990e156 --- /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 00000000000..49f1aa3bb42 --- /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 00000000000..6316dba3bfc --- /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 00000000000..2e1eca1b824 --- /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 00000000000..8faabc56039 --- /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 00000000000..1e5689d98ec --- /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 00000000000..76da7f08533 --- /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 00000000000..a4e468cf63d --- /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 00000000000..7119f688116 --- /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 00000000000..318b8896ce9 --- /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 00000000000..071003bc845 --- /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 00000000000..be12e31ea52 --- /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 00000000000..d1738e7061d --- /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, +}; |