diff options
Diffstat (limited to 'arch/arm')
21 files changed, 1033 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index dbfdf87f993f..5686f4074dd0 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -275,6 +275,12 @@ config ARCH_EP93XX help This enables support for the Cirrus EP93xx series of CPUs. +config ARCH_GEMINI + bool "Cortina Systems Gemini" + select CPU_FA526 + help + Support for the Cortina Systems Gemini family SoCs + config ARCH_FOOTBRIDGE bool "FootBridge" select CPU_SA110 @@ -598,6 +604,8 @@ source "arch/arm/mach-ep93xx/Kconfig" source "arch/arm/mach-footbridge/Kconfig" +source "arch/arm/mach-gemini/Kconfig" + source "arch/arm/mach-integrator/Kconfig" source "arch/arm/mach-iop32x/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index d29f9260fb1c..56e13bf22027 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -108,6 +108,7 @@ endif machine-$(CONFIG_ARCH_PXA) := pxa machine-$(CONFIG_ARCH_L7200) := l7200 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator + machine-$(CONFIG_ARCH_GEMINI) := gemini textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000 machine-$(CONFIG_ARCH_CLPS711X) := clps711x machine-$(CONFIG_ARCH_IOP32X) := iop32x diff --git a/arch/arm/mach-gemini/Kconfig b/arch/arm/mach-gemini/Kconfig new file mode 100644 index 000000000000..3aff39abb188 --- /dev/null +++ b/arch/arm/mach-gemini/Kconfig @@ -0,0 +1,12 @@ +if ARCH_GEMINI + +menu "Cortina Systems Gemini Implementations" + +endmenu + +config GEMINI_MEM_SWAP + bool "Gemini memory is swapped" + help + Say Y here if Gemini memory is swapped by bootloader. + +endif diff --git a/arch/arm/mach-gemini/Makefile b/arch/arm/mach-gemini/Makefile new file mode 100644 index 000000000000..133e2050685e --- /dev/null +++ b/arch/arm/mach-gemini/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the linux kernel. +# + +# Object file lists. + +obj-y := irq.o mm.o time.o devices.o diff --git a/arch/arm/mach-gemini/Makefile.boot b/arch/arm/mach-gemini/Makefile.boot new file mode 100644 index 000000000000..22a52c228d93 --- /dev/null +++ b/arch/arm/mach-gemini/Makefile.boot @@ -0,0 +1,9 @@ +ifeq ($(CONFIG_GEMINI_MEM_SWAP),y) + zreladdr-y := 0x00008000 +params_phys-y := 0x00000100 +initrd_phys-y := 0x00800000 +else + zreladdr-y := 0x10008000 +params_phys-y := 0x10000100 +initrd_phys-y := 0x10800000 +endif diff --git a/arch/arm/mach-gemini/common.h b/arch/arm/mach-gemini/common.h new file mode 100644 index 000000000000..9c1afa1c5803 --- /dev/null +++ b/arch/arm/mach-gemini/common.h @@ -0,0 +1,27 @@ +/* + * Common Gemini architecture functions + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +#ifndef __GEMINI_COMMON_H__ +#define __GEMINI_COMMON_H__ + +struct mtd_partition; + +extern void gemini_map_io(void); +extern void gemini_init_irq(void); +extern void gemini_timer_init(void); + +/* Common platform devices registration functions */ +extern int platform_register_uart(void); +extern int platform_register_pflash(unsigned int size, + struct mtd_partition *parts, + unsigned int nr_parts); + +#endif /* __GEMINI_COMMON_H__ */ diff --git a/arch/arm/mach-gemini/devices.c b/arch/arm/mach-gemini/devices.c new file mode 100644 index 000000000000..6b525253d027 --- /dev/null +++ b/arch/arm/mach-gemini/devices.c @@ -0,0 +1,92 @@ +/* + * Common devices definition for Gemini + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/serial_8250.h> +#include <linux/mtd/physmap.h> + +#include <mach/irqs.h> +#include <mach/hardware.h> +#include <mach/global_reg.h> + +static struct plat_serial8250_port serial_platform_data[] = { + { + .membase = (void *)IO_ADDRESS(GEMINI_UART_BASE), + .mapbase = GEMINI_UART_BASE, + .irq = IRQ_UART, + .uartclk = UART_CLK, + .regshift = 2, + .iotype = UPIO_MEM, + .type = PORT_16550A, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE, + }, + {}, +}; + +static struct platform_device serial_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +int platform_register_uart(void) +{ + return platform_device_register(&serial_device); +} + +static struct resource flash_resource = { + .start = GEMINI_FLASH_BASE, + .flags = IORESOURCE_MEM, +}; + +static struct physmap_flash_data pflash_platform_data = {}; + +static struct platform_device pflash_device = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &pflash_platform_data, + }, + .resource = &flash_resource, + .num_resources = 1, +}; + +int platform_register_pflash(unsigned int size, struct mtd_partition *parts, + unsigned int nr_parts) +{ + unsigned int reg; + + reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS); + + if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL) + return -ENXIO; + + if (reg & FLASH_WIDTH_16BIT) + pflash_platform_data.width = 2; + else + pflash_platform_data.width = 1; + + /* enable parallel flash pins and disable others */ + reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); + reg &= ~PFLASH_PADS_DISABLE; + reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE; + __raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); + + flash_resource.end = flash_resource.start + size - 1; + + pflash_platform_data.parts = parts; + pflash_platform_data.nr_parts = nr_parts; + + return platform_device_register(&pflash_device); +} diff --git a/arch/arm/mach-gemini/include/mach/debug-macro.S b/arch/arm/mach-gemini/include/mach/debug-macro.S new file mode 100644 index 000000000000..d04a6eaeae14 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/debug-macro.S @@ -0,0 +1,23 @@ +/* + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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 <mach/hardware.h> + + .macro addruart,rx + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + ldreq \rx, =GEMINI_UART_BASE @ physical + ldrne \rx, =IO_ADDRESS(GEMINI_UART_BASE) @ virtual + .endm + +#define UART_SHIFT 2 +#define FLOW_CONTROL +#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-gemini/include/mach/entry-macro.S b/arch/arm/mach-gemini/include/mach/entry-macro.S new file mode 100644 index 000000000000..1624f91a2b8b --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/entry-macro.S @@ -0,0 +1,39 @@ +/* + * Low-level IRQ helper macros for Gemini platform. + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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> + +#define IRQ_STATUS 0x14 + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqstat, =IO_ADDRESS(GEMINI_INTERRUPT_BASE + IRQ_STATUS) + ldr \irqnr, [\irqstat] + cmp \irqnr, #0 + beq 2313f + mov \tmp, \irqnr + mov \irqnr, #0 +2312: + tst \tmp, #1 + bne 2313f + add \irqnr, \irqnr, #1 + mov \tmp, \tmp, lsr #1 + cmp \irqnr, #31 + bcc 2312b +2313: + .endm diff --git a/arch/arm/mach-gemini/include/mach/global_reg.h b/arch/arm/mach-gemini/include/mach/global_reg.h new file mode 100644 index 000000000000..de7ff7e849fc --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/global_reg.h @@ -0,0 +1,278 @@ +/* + * This file contains the hardware definitions for Gemini. + * + * Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_GLOBAL_REG_H +#define __MACH_GLOBAL_REG_H + +/* Global Word ID Register*/ +#define GLOBAL_ID 0x00 + +#define CHIP_ID(reg) ((reg) >> 8) +#define CHIP_REVISION(reg) ((reg) & 0xFF) + +/* Global Status Register */ +#define GLOBAL_STATUS 0x04 + +#define CPU_BIG_ENDIAN (1 << 31) +#define PLL_OSC_30M (1 << 30) /* else 60MHz */ + +#define OPERATION_MODE_MASK (0xF << 26) +#define OPM_IDDQ (0xF << 26) +#define OPM_NAND (0xE << 26) +#define OPM_RING (0xD << 26) +#define OPM_DIRECT_BOOT (0xC << 26) +#define OPM_USB1_PHY_TEST (0xB << 26) +#define OPM_USB0_PHY_TEST (0xA << 26) +#define OPM_SATA1_PHY_TEST (0x9 << 26) +#define OPM_SATA0_PHY_TEST (0x8 << 26) +#define OPM_ICE_ARM (0x7 << 26) +#define OPM_ICE_FARADAY (0x6 << 26) +#define OPM_PLL_BYPASS (0x5 << 26) +#define OPM_DEBUG (0x4 << 26) +#define OPM_BURN_IN (0x3 << 26) +#define OPM_MBIST (0x2 << 26) +#define OPM_SCAN (0x1 << 26) +#define OPM_REAL (0x0 << 26) + +#define FLASH_TYPE_MASK (0x3 << 24) +#define FLASH_TYPE_NAND_2K (0x3 << 24) +#define FLASH_TYPE_NAND_512 (0x2 << 24) +#define FLASH_TYPE_PARALLEL (0x1 << 24) +#define FLASH_TYPE_SERIAL (0x0 << 24) +/* if parallel */ +#define FLASH_WIDTH_16BIT (1 << 23) /* else 8 bit */ +/* if serial */ +#define FLASH_ATMEL (1 << 23) /* else STM */ + +#define FLASH_SIZE_MASK (0x3 << 21) +#define NAND_256M (0x3 << 21) /* and more */ +#define NAND_128M (0x2 << 21) +#define NAND_64M (0x1 << 21) +#define NAND_32M (0x0 << 21) +#define ATMEL_16M (0x3 << 21) /* and more */ +#define ATMEL_8M (0x2 << 21) +#define ATMEL_4M_2M (0x1 << 21) +#define ATMEL_1M (0x0 << 21) /* and less */ +#define STM_32M (1 << 22) /* and more */ +#define STM_16M (0 << 22) /* and less */ + +#define FLASH_PARALLEL_HIGH_PIN_CNT (1 << 20) /* else low pin cnt */ + +#define CPU_AHB_RATIO_MASK (0x3 << 18) +#define CPU_AHB_1_1 (0x0 << 18) +#define CPU_AHB_3_2 (0x1 << 18) +#define CPU_AHB_24_13 (0x2 << 18) +#define CPU_AHB_2_1 (0x3 << 18) + +#define REG_TO_AHB_SPEED(reg) ((((reg) >> 15) & 0x7) * 10 + 130) +#define AHB_SPEED_TO_REG(x) ((((x - 130)) / 10) << 15) + +/* it is posible to override some settings, use >> OVERRIDE_xxxx_SHIFT */ +#define OVERRIDE_FLASH_TYPE_SHIFT 16 +#define OVERRIDE_FLASH_WIDTH_SHIFT 16 +#define OVERRIDE_FLASH_SIZE_SHIFT 16 +#define OVERRIDE_CPU_AHB_RATIO_SHIFT 15 +#define OVERRIDE_AHB_SPEED_SHIFT 15 + +/* Global PLL Control Register */ +#define GLOBAL_PLL_CTRL 0x08 + +#define PLL_BYPASS (1 << 31) +#define PLL_POWER_DOWN (1 << 8) +#define PLL_CONTROL_Q (0x1F << 0) + +/* Global Soft Reset Control Register */ +#define GLOBAL_RESET 0x0C + +#define RESET_GLOBAL (1 << 31) +#define RESET_CPU1 (1 << 30) +#define RESET_TVE (1 << 28) +#define RESET_SATA1 (1 << 27) +#define RESET_SATA0 (1 << 26) +#define RESET_CIR (1 << 25) +#define RESET_EXT_DEV (1 << 24) +#define RESET_WD (1 << 23) +#define RESET_GPIO2 (1 << 22) +#define RESET_GPIO1 (1 << 21) +#define RESET_GPIO0 (1 << 20) +#define RESET_SSP (1 << 19) +#define RESET_UART (1 << 18) +#define RESET_TIMER (1 << 17) +#define RESET_RTC (1 << 16) +#define RESET_INT1 (1 << 15) +#define RESET_INT0 (1 << 14) +#define RESET_LCD (1 << 13) +#define RESET_LPC (1 << 12) +#define RESET_APB (1 << 11) +#define RESET_DMA (1 << 10) +#define RESET_USB1 (1 << 9) +#define RESET_USB0 (1 << 8) +#define RESET_PCI (1 << 7) +#define RESET_GMAC1 (1 << 6) +#define RESET_GMAC0 (1 << 5) +#define RESET_SECURITY (1 << 4) +#define RESET_RAID (1 << 3) +#define RESET_IDE (1 << 2) +#define RESET_FLASH (1 << 1) +#define RESET_DRAM (1 << 0) + +/* Global IO Pad Driving Capability Control Register */ +#define GLOBAL_IO_DRIVING_CTRL 0x10 + +#define DRIVING_CURRENT_MASK 0x3 + +/* here 00-4mA, 01-8mA, 10-12mA, 11-16mA */ +#define GPIO1_PADS_31_28_SHIFT 28 +#define GPIO0_PADS_31_16_SHIFT 26 +#define GPIO0_PADS_15_0_SHIFT 24 +#define PCI_AND_EXT_RESET_PADS_SHIFT 22 +#define IDE_PADS_SHIFT 20 +#define GMAC1_PADS_SHIFT 18 +#define GMAC0_PADS_SHIFT 16 +/* DRAM is not in mA and poorly documented */ +#define DRAM_CLOCK_PADS_SHIFT 8 +#define DRAM_DATA_PADS_SHIFT 4 +#define DRAM_CONTROL_PADS_SHIFT 0 + +/* Global IO Pad Slew Rate Control Register */ +#define GLOBAL_IO_SLEW_RATE_CTRL 0x14 + +#define GPIO1_PADS_31_28_SLOW (1 << 10) +#define GPIO0_PADS_31_16_SLOW (1 << 9) +#define GPIO0_PADS_15_0_SLOW (1 << 8) +#define PCI_PADS_SLOW (1 << 7) +#define IDE_PADS_SLOW (1 << 6) +#define GMAC1_PADS_SLOW (1 << 5) +#define GMAC0_PADS_SLOW (1 << 4) +#define DRAM_CLOCK_PADS_SLOW (1 << 1) +#define DRAM_IO_PADS_SLOW (1 << 0) + +/* + * General skew control defines + * 16 steps, each step is around 0.2ns + */ +#define SKEW_MASK 0xF + +/* Global IDE PAD Skew Control Register */ +#define GLOBAL_IDE_SKEW_CTRL 0x18 + +#define IDE1_HOST_STROBE_DELAY_SHIFT 28 +#define IDE1_DEVICE_STROBE_DELAY_SHIFT 24 +#define IDE1_OUTPUT_IO_SKEW_SHIFT 20 +#define IDE1_INPUT_IO_SKEW_SHIFT 16 +#define IDE0_HOST_STROBE_DELAY_SHIFT 12 +#define IDE0_DEVICE_STROBE_DELAY_SHIFT 8 +#define IDE0_OUTPUT_IO_SKEW_SHIFT 4 +#define IDE0_INPUT_IO_SKEW_SHIFT 0 + +/* Global GMAC Control Pad Skew Control Register */ +#define GLOBAL_GMAC_CTRL_SKEW_CTRL 0x1C + +#define GMAC1_TXC_SKEW_SHIFT 28 +#define GMAC1_TXEN_SKEW_SHIFT 24 +#define GMAC1_RXC_SKEW_SHIFT 20 +#define GMAC1_RXDV_SKEW_SHIFT 16 +#define GMAC0_TXC_SKEW_SHIFT 12 +#define GMAC0_TXEN_SKEW_SHIFT 8 +#define GMAC0_RXC_SKEW_SHIFT 4 +#define GMAC0_RXDV_SKEW_SHIFT 0 + +/* Global GMAC0 Data PAD Skew Control Register */ +#define GLOBAL_GMAC0_DATA_SKEW_CTRL 0x20 +/* Global GMAC1 Data PAD Skew Control Register */ +#define GLOBAL_GMAC1_DATA_SKEW_CTRL 0x24 + +#define GMAC_TXD_SKEW_SHIFT(x) (((x) * 4) + 16) +#define GMAC_RXD_SKEW_SHIFT(x) ((x) * 4) + +/* CPU has two AHB busses. */ + +/* Global Arbitration0 Control Register */ +#define GLOBAL_ARBITRATION0_CTRL 0x28 + +#define BOOT_CONTROLLER_HIGH_PRIO (1 << 3) +#define DMA_BUS1_HIGH_PRIO (1 << 2) +#define CPU0_HIGH_PRIO (1 << 0) + +/* Global Arbitration1 Control Register */ +#define GLOBAL_ARBITRATION1_CTRL 0x2C + +#define TVE_HIGH_PRIO (1 << 9) +#define PCI_HIGH_PRIO (1 << 8) +#define USB1_HIGH_PRIO (1 << 7) +#define USB0_HIGH_PRIO (1 << 6) +#define GMAC1_HIGH_PRIO (1 << 5) +#define GMAC0_HIGH_PRIO (1 << 4) +#define SECURITY_HIGH_PRIO (1 << 3) +#define RAID_HIGH_PRIO (1 << 2) +#define IDE_HIGH_PRIO (1 << 1) +#define DMA_BUS2_HIGH_PRIO (1 << 0) + +/* Common bits for both arbitration registers */ +#define BURST_LENGTH_SHIFT 16 +#define BURST_LENGTH_MASK (0x3F << 16) + +/* Miscellaneous Control Register */ +#define GLOBAL_MISC_CTRL 0x30 + +#define MEMORY_SPACE_SWAP (1 << 31) +#define USB1_PLUG_MINIB (1 << 30) /* else plug is mini-A */ +#define USB0_PLUG_MINIB (1 << 29) +#define GMAC_GMII (1 << 28) +#define GMAC_1_ENABLE (1 << 27) +/* TODO: define ATA/SATA bits */ +#define USB1_VBUS_ON (1 << 23) +#define USB0_VBUS_ON (1 << 22) +#define APB_CLKOUT_ENABLE (1 << 21) +#define TVC_CLKOUT_ENABLE (1 << 20) +#define EXT_CLKIN_ENABLE (1 << 19) +#define PCI_66MHZ (1 << 18) /* else 33 MHz */ +#define PCI_CLKOUT_ENABLE (1 << 17) +#define LPC_CLKOUT_ENABLE (1 << 16) +#define USB1_WAKEUP_ON (1 << 15) +#define USB0_WAKEUP_ON (1 << 14) +/* TODO: define PCI idle detect bits */ +#define TVC_PADS_ENABLE (1 << 9) +#define SSP_PADS_ENABLE (1 << 8) +#define LCD_PADS_ENABLE (1 << 7) +#define LPC_PADS_ENABLE (1 << 6) +#define PCI_PADS_ENABLE (1 << 5) +#define IDE_PADS_ENABLE (1 << 4) +#define DRAM_PADS_POWER_DOWN (1 << 3) +#define NAND_PADS_DISABLE (1 << 2) +#define PFLASH_PADS_DISABLE (1 << 1) +#define SFLASH_PADS_DISABLE (1 << 0) + +/* Global Clock Control Register */ +#define GLOBAL_CLOCK_CTRL 0x34 + +#define POWER_STATE_G0 (1 << 31) +#define POWER_STATE_S1 (1 << 30) /* else it is S3/S4 state */ +#define SECURITY_APB_AHB (1 << 29) +/* else Security APB clk will be 0.75xAHB */ +/* TODO: TVC clock divider */ +#define PCI_CLKRUN_ENABLE (1 << 16) +#define BOOT_CLK_DISABLE (1 << 13) +#define TVC_CLK_DISABLE (1 << 12) +#define FLASH_CLK_DISABLE (1 << 11) +#define DDR_CLK_DISABLE (1 << 10) +#define PCI_CLK_DISABLE (1 << 9) +#define IDE_CLK_DISABLE (1 << 8) +#define USB1_CLK_DISABLE (1 << 7) +#define USB0_CLK_DISABLE (1 << 6) +#define SATA1_CLK_DISABLE (1 << 5) +#define SATA0_CLK_DISABLE (1 << 4) +#define GMAC1_CLK_DISABLE (1 << 3) +#define GMAC0_CLK_DISABLE (1 << 2) +#define SECURITY_CLK_DISABLE (1 << 1) + +/* TODO: other registers definitions if needed */ + +#endif /* __MACH_GLOBAL_REG_H */ diff --git a/arch/arm/mach-gemini/include/mach/hardware.h b/arch/arm/mach-gemini/include/mach/hardware.h new file mode 100644 index 000000000000..de6752674c05 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/hardware.h @@ -0,0 +1,75 @@ +/* + * This file contains the hardware definitions for Gemini. + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_HARDWARE_H +#define __MACH_HARDWARE_H + +/* + * Memory Map definitions + */ +/* FIXME: Does it really swap SRAM like this? */ +#ifdef CONFIG_GEMINI_MEM_SWAP +# define GEMINI_DRAM_BASE 0x00000000 +# define GEMINI_SRAM_BASE 0x20000000 +#else +# define GEMINI_SRAM_BASE 0x00000000 +# define GEMINI_DRAM_BASE 0x10000000 +#endif +#define GEMINI_FLASH_BASE 0x30000000 +#define GEMINI_GLOBAL_BASE 0x40000000 +#define GEMINI_WAQTCHDOG_BASE 0x41000000 +#define GEMINI_UART_BASE 0x42000000 +#define GEMINI_TIMER_BASE 0x43000000 +#define GEMINI_LCD_BASE 0x44000000 +#define GEMINI_RTC_BASE 0x45000000 +#define GEMINI_SATA_BASE 0x46000000 +#define GEMINI_LPC_HOST_BASE 0x47000000 +#define GEMINI_LPC_IO_BASE 0x47800000 +#define GEMINI_INTERRUPT_BASE 0x48000000 +/* TODO: Different interrupt controlers when SMP + * #define GEMINI_INTERRUPT0_BASE 0x48000000 + * #define GEMINI_INTERRUPT1_BASE 0x49000000 + */ +#define GEMINI_SSP_CTRL_BASE 0x4A000000 +#define GEMINI_POWER_CTRL_BASE 0x4B000000 +#define GEMINI_CIR_BASE 0x4C000000 +#define GEMINI_GPIO_BASE(x) (0x4D000000 + (x) * 0x1000000) +#define GEMINI_PCI_IO_BASE 0x50000000 +#define GEMINI_PCI_MEM_BASE 0x58000000 +#define GEMINI_TOE_BASE 0x60000000 +#define GEMINI_GMAC0_BASE 0x6000A000 +#define GEMINI_GMAC1_BASE 0x6000E000 +#define GEMINI_SECURITY_BASE 0x62000000 +#define GEMINI_IDE0_BASE 0x63000000 +#define GEMINI_IDE1_BASE 0x63400000 +#define GEMINI_RAID_BASE 0x64000000 +#define GEMINI_FLASH_CTRL_BASE 0x65000000 +#define GEMINI_DRAM_CTRL_BASE 0x66000000 +#define GEMINI_GENERAL_DMA_BASE 0x67000000 +#define GEMINI_USB0_BASE 0x68000000 +#define GEMINI_USB1_BASE 0x69000000 +#define GEMINI_BIG_ENDIAN_BASE 0x80000000 + +#define GEMINI_TIMER1_BASE GEMINI_TIMER_BASE +#define GEMINI_TIMER2_BASE (GEMINI_TIMER_BASE + 0x10) +#define GEMINI_TIMER3_BASE (GEMINI_TIMER_BASE + 0x20) + +/* + * UART Clock when System clk is 150MHz + */ +#define UART_CLK 48000000 + +/* + * macro to get at IO space when running virtually + */ +#define IO_ADDRESS(x) ((((x) & 0xFFF00000) >> 4) | ((x) & 0x000FFFFF) | 0xF0000000) + +#endif diff --git a/arch/arm/mach-gemini/include/mach/io.h b/arch/arm/mach-gemini/include/mach/io.h new file mode 100644 index 000000000000..c548056b98b2 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/io.h @@ -0,0 +1,18 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_IO_H +#define __MACH_IO_H + +#define IO_SPACE_LIMIT 0xffffffff + +#define __io(a) __typesafe_io(a) +#define __mem_pci(a) (a) + +#endif /* __MACH_IO_H */ diff --git a/arch/arm/mach-gemini/include/mach/irqs.h b/arch/arm/mach-gemini/include/mach/irqs.h new file mode 100644 index 000000000000..c7728ac458f3 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/irqs.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +#ifndef __MACH_IRQS_H__ +#define __MACH_IRQS_H__ + +#define IRQ_SERIRQ1 31 +#define IRQ_SERIRQ0 30 +#define IRQ_PCID 29 +#define IRQ_PCIC 28 +#define IRQ_PCIB 27 +#define IRQ_PWR 26 +#define IRQ_CIR 25 +#define IRQ_GPIO(x) (22 + (x)) +#define IRQ_SSP 21 +#define IRQ_LPC 20 +#define IRQ_LCD 19 +#define IRQ_UART 18 +#define IRQ_RTC 17 +#define IRQ_TIMER3 16 +#define IRQ_TIMER2 15 +#define IRQ_TIMER1 14 +#define IRQ_FLASH 12 +#define IRQ_USB1 11 +#define IRQ_USB0 10 +#define IRQ_DMA 9 +#define IRQ_PCI 8 +#define IRQ_IPSEC 7 +#define IRQ_RAID 6 +#define IRQ_IDE1 5 +#define IRQ_IDE0 4 +#define IRQ_WATCHDOG 3 +#define IRQ_GMAC1 2 +#define IRQ_GMAC0 1 +#define IRQ_IPI 0 + +#define NORMAL_IRQ_NUM 32 + +#define ARCH_TIMER_IRQ IRQ_TIMER2 + +#define NR_IRQS NORMAL_IRQ_NUM + +#endif /* __MACH_IRQS_H__ */ diff --git a/arch/arm/mach-gemini/include/mach/memory.h b/arch/arm/mach-gemini/include/mach/memory.h new file mode 100644 index 000000000000..2d14d5bf1f9f --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/memory.h @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_MEMORY_H +#define __MACH_MEMORY_H + +#ifdef CONFIG_GEMINI_MEM_SWAP +# define PHYS_OFFSET UL(0x00000000) +#else +# define PHYS_OFFSET UL(0x10000000) +#endif + +#endif /* __MACH_MEMORY_H */ diff --git a/arch/arm/mach-gemini/include/mach/system.h b/arch/arm/mach-gemini/include/mach/system.h new file mode 100644 index 000000000000..bbbd72767a02 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/system.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_SYSTEM_H +#define __MACH_SYSTEM_H + +#include <linux/io.h> +#include <mach/hardware.h> +#include <mach/global_reg.h> + +static inline void arch_idle(void) +{ + /* + * Because of broken hardware we have to enable interrupts or the CPU + * will never wakeup... Acctualy it is not very good to enable + * interrupts here since scheduler can miss a tick, but there is + * no other way around this. Platforms that needs it for power saving + * should call enable_hlt() in init code, since by default it is + * disabled. + */ + local_irq_enable(); + cpu_do_idle(); +} + +static inline void arch_reset(char mode) +{ + __raw_writel(RESET_GLOBAL | RESET_CPU1, + IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_RESET); +} + +#endif /* __MACH_SYSTEM_H */ diff --git a/arch/arm/mach-gemini/include/mach/timex.h b/arch/arm/mach-gemini/include/mach/timex.h new file mode 100644 index 000000000000..dc5690ba975c --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/timex.h @@ -0,0 +1,13 @@ +/* + * Gemini timex specifications + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +/* When AHB bus frequency is 150MHz */ +#define CLOCK_TICK_RATE 38000000 diff --git a/arch/arm/mach-gemini/include/mach/uncompress.h b/arch/arm/mach-gemini/include/mach/uncompress.h new file mode 100644 index 000000000000..59c5df7e716c --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/uncompress.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * Based on mach-pxa/include/mach/uncompress.h: + * Copyright: (C) 2001 MontaVista Software Inc. + * + * 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. + */ + +#ifndef __MACH_UNCOMPRESS_H +#define __MACH_UNCOMPRESS_H + +#include <linux/serial_reg.h> +#include <mach/hardware.h> + +static volatile unsigned long *UART = (unsigned long *)GEMINI_UART_BASE; + +/* + * The following code assumes the serial port has already been + * initialized by the bootloader. If you didn't setup a port in + * your bootloader then nothing will appear (which might be desired). + */ +static inline void putc(char c) +{ + while (!(UART[UART_LSR] & UART_LSR_THRE)) + barrier(); + UART[UART_TX] = c; +} + +#define flush() do { } while (0) + +/* + * nothing to do + */ +#define arch_decomp_setup() + +#define arch_decomp_wdog() + +#endif /* __MACH_UNCOMPRESS_H */ diff --git a/arch/arm/mach-gemini/include/mach/vmalloc.h b/arch/arm/mach-gemini/include/mach/vmalloc.h new file mode 100644 index 000000000000..83e536d9436c --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/vmalloc.h @@ -0,0 +1,10 @@ +/* + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +#define VMALLOC_END 0xF0000000 diff --git a/arch/arm/mach-gemini/irq.c b/arch/arm/mach-gemini/irq.c new file mode 100644 index 000000000000..9e613ca8120d --- /dev/null +++ b/arch/arm/mach-gemini/irq.c @@ -0,0 +1,102 @@ +/* + * Interrupt routines for Gemini + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#include <linux/init.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/stddef.h> +#include <linux/list.h> +#include <linux/sched.h> +#include <asm/irq.h> +#include <asm/mach/irq.h> +#include <mach/hardware.h> + +#define IRQ_SOURCE(base_addr) (base_addr + 0x00) +#define IRQ_MASK(base_addr) (base_addr + 0x04) +#define IRQ_CLEAR(base_addr) (base_addr + 0x08) +#define IRQ_TMODE(base_addr) (base_addr + 0x0C) +#define IRQ_TLEVEL(base_addr) (base_addr + 0x10) +#define IRQ_STATUS(base_addr) (base_addr + 0x14) +#define FIQ_SOURCE(base_addr) (base_addr + 0x20) +#define FIQ_MASK(base_addr) (base_addr + 0x24) +#define FIQ_CLEAR(base_addr) (base_addr + 0x28) +#define FIQ_TMODE(base_addr) (base_addr + 0x2C) +#define FIQ_LEVEL(base_addr) (base_addr + 0x30) +#define FIQ_STATUS(base_addr) (base_addr + 0x34) + +static void gemini_ack_irq(unsigned int irq) +{ + __raw_writel(1 << irq, IRQ_CLEAR(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static void gemini_mask_irq(unsigned int irq) +{ + unsigned int mask; + + mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + mask &= ~(1 << irq); + __raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static void gemini_unmask_irq(unsigned int irq) +{ + unsigned int mask; + + mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + mask |= (1 << irq); + __raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static struct irq_chip gemini_irq_chip = { + .name = "INTC", + .ack = gemini_ack_irq, + .mask = gemini_mask_irq, + .unmask = gemini_unmask_irq, +}; + +static struct resource irq_resource = { + .name = "irq_handler", + .start = IO_ADDRESS(GEMINI_INTERRUPT_BASE), + .end = IO_ADDRESS(FIQ_STATUS(GEMINI_INTERRUPT_BASE)) + 4, +}; + +void __init gemini_init_irq(void) +{ + unsigned int i, mode = 0, level = 0; + + /* + * Disable arch_idle() by default since it is buggy + * For more info see arch/arm/mach-gemini/include/mach/system.h + */ + disable_hlt(); + + request_resource(&iomem_resource, &irq_resource); + + for (i = 0; i < NR_IRQS; i++) { + set_irq_chip(i, &gemini_irq_chip); + if((i >= IRQ_TIMER1 && i <= IRQ_TIMER3) || (i >= IRQ_SERIRQ0 && i <= IRQ_SERIRQ1)) { + set_irq_handler(i, handle_edge_irq); + mode |= 1 << i; + level |= 1 << i; + } else { + set_irq_handler(i, handle_level_irq); + } + set_irq_flags(i, IRQF_VALID | IRQF_PROBE); + } + + /* Disable all interrupts */ + __raw_writel(0, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + __raw_writel(0, FIQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + + /* Set interrupt mode */ + __raw_writel(mode, IRQ_TMODE(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + __raw_writel(level, IRQ_TLEVEL(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} diff --git a/arch/arm/mach-gemini/mm.c b/arch/arm/mach-gemini/mm.c new file mode 100644 index 000000000000..51948242ec09 --- /dev/null +++ b/arch/arm/mach-gemini/mm.c @@ -0,0 +1,82 @@ +/* + * Static mappings for Gemini + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#include <linux/mm.h> +#include <linux/init.h> + +#include <asm/mach/map.h> + +#include <mach/hardware.h> + +/* Page table mapping for I/O region */ +static struct map_desc gemini_io_desc[] __initdata = { + { + .virtual = IO_ADDRESS(GEMINI_GLOBAL_BASE), + .pfn =__phys_to_pfn(GEMINI_GLOBAL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_UART_BASE), + .pfn = __phys_to_pfn(GEMINI_UART_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_TIMER_BASE), + .pfn = __phys_to_pfn(GEMINI_TIMER_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_INTERRUPT_BASE), + .pfn = __phys_to_pfn(GEMINI_INTERRUPT_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_POWER_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_POWER_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(0)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(0)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(1)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(1)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(2)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(2)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_FLASH_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_FLASH_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_DRAM_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_DRAM_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GENERAL_DMA_BASE), + .pfn = __phys_to_pfn(GEMINI_GENERAL_DMA_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, +}; + +void __init gemini_map_io(void) +{ + iotable_init(gemini_io_desc, ARRAY_SIZE(gemini_io_desc)); +} diff --git a/arch/arm/mach-gemini/time.c b/arch/arm/mach-gemini/time.c new file mode 100644 index 000000000000..21dc5a89d1c4 --- /dev/null +++ b/arch/arm/mach-gemini/time.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <mach/hardware.h> +#include <mach/global_reg.h> +#include <asm/mach/time.h> + +/* + * Register definitions for the timers + */ +#define TIMER_COUNT(BASE_ADDR) (BASE_ADDR + 0x00) +#define TIMER_LOAD(BASE_ADDR) (BASE_ADDR + 0x04) +#define TIMER_MATCH1(BASE_ADDR) (BASE_ADDR + 0x08) +#define TIMER_MATCH2(BASE_ADDR) (BASE_ADDR + 0x0C) +#define TIMER_CR(BASE_ADDR) (BASE_ADDR + 0x30) + +#define TIMER_1_CR_ENABLE (1 << 0) +#define TIMER_1_CR_CLOCK (1 << 1) +#define TIMER_1_CR_INT (1 << 2) +#define TIMER_2_CR_ENABLE (1 << 3) +#define TIMER_2_CR_CLOCK (1 << 4) +#define TIMER_2_CR_INT (1 << 5) +#define TIMER_3_CR_ENABLE (1 << 6) +#define TIMER_3_CR_CLOCK (1 << 7) +#define TIMER_3_CR_INT (1 << 8) + +/* + * IRQ handler for the timer + */ +static irqreturn_t gemini_timer_interrupt(int irq, void *dev_id) +{ + timer_tick(); + + return IRQ_HANDLED; +} + +static struct irqaction gemini_timer_irq = { + .name = "Gemini Timer Tick", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = gemini_timer_interrupt, +}; + +/* + * Set up timer interrupt, and return the current time in seconds. + */ +void __init gemini_timer_init(void) +{ + unsigned int tick_rate, reg_v; + + reg_v = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE + GLOBAL_STATUS)); + tick_rate = REG_TO_AHB_SPEED(reg_v) * 1000000; + + printk(KERN_INFO "Bus: %dMHz", tick_rate / 1000000); + + tick_rate /= 6; /* APB bus run AHB*(1/6) */ + + switch(reg_v & CPU_AHB_RATIO_MASK) { + case CPU_AHB_1_1: + printk(KERN_CONT "(1/1)\n"); + break; + case CPU_AHB_3_2: + printk(KERN_CONT "(3/2)\n"); + break; + case CPU_AHB_24_13: + printk(KERN_CONT "(24/13)\n"); + break; + case CPU_AHB_2_1: + printk(KERN_CONT "(2/1)\n"); + break; + } + + /* + * Make irqs happen for the system timer + */ + setup_irq(IRQ_TIMER2, &gemini_timer_irq); + /* Start the timer */ + __raw_writel(tick_rate / HZ, TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER2_BASE))); + __raw_writel(tick_rate / HZ, TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER2_BASE))); + __raw_writel(TIMER_2_CR_ENABLE | TIMER_2_CR_INT, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); +} |