diff options
Diffstat (limited to 'arch/arm/mach-ixp2000/ixdp2x01.c')
| -rw-r--r-- | arch/arm/mach-ixp2000/ixdp2x01.c | 483 |
1 files changed, 0 insertions, 483 deletions
diff --git a/arch/arm/mach-ixp2000/ixdp2x01.c b/arch/arm/mach-ixp2000/ixdp2x01.c deleted file mode 100644 index 5196c39cdba..00000000000 --- a/arch/arm/mach-ixp2000/ixdp2x01.c +++ /dev/null @@ -1,483 +0,0 @@ -/* - * arch/arm/mach-ixp2000/ixdp2x01.c - * - * Code common to Intel IXDP2401 and IXDP2801 platforms - * - * Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com> - * Maintainer: Deepak Saxena <dsaxena@plexity.net> - * - * Copyright (C) 2002-2003 Intel Corp. - * Copyright (C) 2003-2004 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. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/bitops.h> -#include <linux/pci.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/serial.h> -#include <linux/tty.h> -#include <linux/serial_core.h> -#include <linux/platform_device.h> -#include <linux/serial_8250.h> -#include <linux/io.h> - -#include <asm/irq.h> -#include <asm/pgtable.h> -#include <asm/page.h> -#include <mach/hardware.h> -#include <asm/mach-types.h> - -#include <asm/mach/pci.h> -#include <asm/mach/map.h> -#include <asm/mach/irq.h> -#include <asm/mach/time.h> -#include <asm/mach/arch.h> -#include <asm/mach/flash.h> - -/************************************************************************* - * IXDP2x01 IRQ Handling - *************************************************************************/ -static void ixdp2x01_irq_mask(struct irq_data *d) -{ - ixp2000_reg_wrb(IXDP2X01_INT_MASK_SET_REG, - IXP2000_BOARD_IRQ_MASK(d->irq)); -} - -static void ixdp2x01_irq_unmask(struct irq_data *d) -{ - ixp2000_reg_write(IXDP2X01_INT_MASK_CLR_REG, - IXP2000_BOARD_IRQ_MASK(d->irq)); -} - -static u32 valid_irq_mask; - -static void ixdp2x01_irq_handler(unsigned int irq, struct irq_desc *desc) -{ - u32 ex_interrupt; - int i; - - desc->irq_data.chip->irq_mask(&desc->irq_data); - - ex_interrupt = *IXDP2X01_INT_STAT_REG & valid_irq_mask; - - if (!ex_interrupt) { - printk(KERN_ERR "Spurious IXDP2X01 CPLD interrupt!\n"); - return; - } - - for (i = 0; i < IXP2000_BOARD_IRQS; i++) { - if (ex_interrupt & (1 << i)) { - int cpld_irq = IXP2000_BOARD_IRQ(0) + i; - generic_handle_irq(cpld_irq); - } - } - - desc->irq_data.chip->irq_unmask(&desc->irq_data); -} - -static struct irq_chip ixdp2x01_irq_chip = { - .irq_mask = ixdp2x01_irq_mask, - .irq_ack = ixdp2x01_irq_mask, - .irq_unmask = ixdp2x01_irq_unmask -}; - -/* - * We only do anything if we are the master NPU on the board. - * The slave NPU only has the ethernet chip going directly to - * the PCIB interrupt input. - */ -void __init ixdp2x01_init_irq(void) -{ - int irq = 0; - - /* initialize chip specific interrupts */ - ixp2000_init_irq(); - - if (machine_is_ixdp2401()) - valid_irq_mask = IXDP2401_VALID_IRQ_MASK; - else - valid_irq_mask = IXDP2801_VALID_IRQ_MASK; - - /* Mask all interrupts from CPLD, disable simulation */ - ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff); - ixp2000_reg_wrb(IXDP2X01_INT_SIM_REG, 0); - - for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) { - if (irq & valid_irq_mask) { - irq_set_chip_and_handler(irq, &ixdp2x01_irq_chip, - handle_level_irq); - set_irq_flags(irq, IRQF_VALID); - } else { - set_irq_flags(irq, 0); - } - } - - /* Hook into PCI interrupts */ - irq_set_chained_handler(IRQ_IXP2000_PCIB, ixdp2x01_irq_handler); -} - - -/************************************************************************* - * IXDP2x01 memory map - *************************************************************************/ -static struct map_desc ixdp2x01_io_desc __initdata = { - .virtual = IXDP2X01_VIRT_CPLD_BASE, - .pfn = __phys_to_pfn(IXDP2X01_PHYS_CPLD_BASE), - .length = IXDP2X01_CPLD_REGION_SIZE, - .type = MT_DEVICE -}; - -static void __init ixdp2x01_map_io(void) -{ - ixp2000_map_io(); - iotable_init(&ixdp2x01_io_desc, 1); -} - - -/************************************************************************* - * IXDP2x01 serial ports - *************************************************************************/ -static struct plat_serial8250_port ixdp2x01_serial_port1[] = { - { - .mapbase = (unsigned long)IXDP2X01_UART1_PHYS_BASE, - .membase = (char *)IXDP2X01_UART1_VIRT_BASE, - .irq = IRQ_IXDP2X01_UART1, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, - .iotype = UPIO_MEM32, - .regshift = 2, - .uartclk = IXDP2X01_UART_CLK, - }, - { } -}; - -static struct resource ixdp2x01_uart_resource1 = { - .start = IXDP2X01_UART1_PHYS_BASE, - .end = IXDP2X01_UART1_PHYS_BASE + 0xffff, - .flags = IORESOURCE_MEM, -}; - -static struct platform_device ixdp2x01_serial_device1 = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM1, - .dev = { - .platform_data = ixdp2x01_serial_port1, - }, - .num_resources = 1, - .resource = &ixdp2x01_uart_resource1, -}; - -static struct plat_serial8250_port ixdp2x01_serial_port2[] = { - { - .mapbase = (unsigned long)IXDP2X01_UART2_PHYS_BASE, - .membase = (char *)IXDP2X01_UART2_VIRT_BASE, - .irq = IRQ_IXDP2X01_UART2, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, - .iotype = UPIO_MEM32, - .regshift = 2, - .uartclk = IXDP2X01_UART_CLK, - }, - { } -}; - -static struct resource ixdp2x01_uart_resource2 = { - .start = IXDP2X01_UART2_PHYS_BASE, - .end = IXDP2X01_UART2_PHYS_BASE + 0xffff, - .flags = IORESOURCE_MEM, -}; - -static struct platform_device ixdp2x01_serial_device2 = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM2, - .dev = { - .platform_data = ixdp2x01_serial_port2, - }, - .num_resources = 1, - .resource = &ixdp2x01_uart_resource2, -}; - -static void ixdp2x01_uart_init(void) -{ - platform_device_register(&ixdp2x01_serial_device1); - platform_device_register(&ixdp2x01_serial_device2); -} - - -/************************************************************************* - * IXDP2x01 timer tick configuration - *************************************************************************/ -static unsigned int ixdp2x01_clock; - -static int __init ixdp2x01_clock_setup(char *str) -{ - ixdp2x01_clock = simple_strtoul(str, NULL, 10); - - return 1; -} - -__setup("ixdp2x01_clock=", ixdp2x01_clock_setup); - -static void __init ixdp2x01_timer_init(void) -{ - if (!ixdp2x01_clock) - ixdp2x01_clock = 50000000; - - ixp2000_init_time(ixdp2x01_clock); -} - -static struct sys_timer ixdp2x01_timer = { - .init = ixdp2x01_timer_init, - .offset = ixp2000_gettimeoffset, -}; - -/************************************************************************* - * IXDP2x01 PCI - *************************************************************************/ -void __init ixdp2x01_pci_preinit(void) -{ - ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00000000); - ixp2000_pci_preinit(); - pcibios_setup("firmware"); -} - -#define DEVPIN(dev, pin) ((pin) | ((dev) << 3)) - -static int __init ixdp2x01_pci_map_irq(const struct pci_dev *dev, u8 slot, - u8 pin) -{ - u8 bus = dev->bus->number; - u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin); - struct pci_bus *tmp_bus = dev->bus; - - /* Primary bus, no interrupts here */ - if (bus == 0) { - return -1; - } - - /* Lookup first leaf in bus tree */ - while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL)) { - tmp_bus = tmp_bus->parent; - } - - /* Select between known bridges */ - switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) { - /* Device is located after first MB bridge */ - case 0x0008: - if (tmp_bus == dev->bus) { - /* Device is located directly after first MB bridge */ - switch (devpin) { - case DEVPIN(1, 1): /* Onboard 82546 ch 0 */ - if (machine_is_ixdp2401()) - return IRQ_IXDP2401_INTA_82546; - return -1; - case DEVPIN(1, 2): /* Onboard 82546 ch 1 */ - if (machine_is_ixdp2401()) - return IRQ_IXDP2401_INTB_82546; - return -1; - case DEVPIN(0, 1): /* PMC INTA# */ - return IRQ_IXDP2X01_SPCI_PMC_INTA; - case DEVPIN(0, 2): /* PMC INTB# */ - return IRQ_IXDP2X01_SPCI_PMC_INTB; - case DEVPIN(0, 3): /* PMC INTC# */ - return IRQ_IXDP2X01_SPCI_PMC_INTC; - case DEVPIN(0, 4): /* PMC INTD# */ - return IRQ_IXDP2X01_SPCI_PMC_INTD; - } - } - break; - case 0x0010: - if (tmp_bus == dev->bus) { - /* Device is located directly after second MB bridge */ - /* Secondary bus of second bridge */ - switch (devpin) { - case DEVPIN(0, 1): /* DB#0 */ - return IRQ_IXDP2X01_SPCI_DB_0; - case DEVPIN(1, 1): /* DB#1 */ - return IRQ_IXDP2X01_SPCI_DB_1; - } - } else { - /* Device is located indirectly after second MB bridge */ - /* Not supported now */ - } - break; - } - - return -1; -} - - -static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys) -{ - sys->mem_offset = 0xe0000000; - - if (machine_is_ixdp2801() || machine_is_ixdp28x5()) - sys->mem_offset -= ((*IXP2000_PCI_ADDR_EXT & 0xE000) << 16); - - return ixp2000_pci_setup(nr, sys); -} - -struct hw_pci ixdp2x01_pci __initdata = { - .nr_controllers = 1, - .setup = ixdp2x01_pci_setup, - .preinit = ixdp2x01_pci_preinit, - .scan = ixp2000_pci_scan_bus, - .map_irq = ixdp2x01_pci_map_irq, -}; - -int __init ixdp2x01_pci_init(void) -{ - if (machine_is_ixdp2401() || machine_is_ixdp2801() ||\ - machine_is_ixdp28x5()) - pci_common_init(&ixdp2x01_pci); - - return 0; -} - -subsys_initcall(ixdp2x01_pci_init); - -/************************************************************************* - * IXDP2x01 Machine Initialization - *************************************************************************/ -static struct flash_platform_data ixdp2x01_flash_platform_data = { - .map_name = "cfi_probe", - .width = 1, -}; - -static unsigned long ixdp2x01_flash_bank_setup(unsigned long ofs) -{ - ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG, - ((ofs >> IXDP2X01_FLASH_WINDOW_BITS) | IXDP2X01_CPLD_FLASH_INTERN)); - return (ofs & IXDP2X01_FLASH_WINDOW_MASK); -} - -static struct ixp2000_flash_data ixdp2x01_flash_data = { - .platform_data = &ixdp2x01_flash_platform_data, - .bank_setup = ixdp2x01_flash_bank_setup -}; - -static struct resource ixdp2x01_flash_resource = { - .start = 0xc4000000, - .end = 0xc4000000 + 0x01ffffff, - .flags = IORESOURCE_MEM, -}; - -static struct platform_device ixdp2x01_flash = { - .name = "IXP2000-Flash", - .id = 0, - .dev = { - .platform_data = &ixdp2x01_flash_data, - }, - .num_resources = 1, - .resource = &ixdp2x01_flash_resource, -}; - -static struct ixp2000_i2c_pins ixdp2x01_i2c_gpio_pins = { - .sda_pin = IXDP2X01_GPIO_SDA, - .scl_pin = IXDP2X01_GPIO_SCL, -}; - -static struct platform_device ixdp2x01_i2c_controller = { - .name = "IXP2000-I2C", - .id = 0, - .dev = { - .platform_data = &ixdp2x01_i2c_gpio_pins, - }, - .num_resources = 0 -}; - -static struct platform_device *ixdp2x01_devices[] __initdata = { - &ixdp2x01_flash, - &ixdp2x01_i2c_controller -}; - -static void __init ixdp2x01_init_machine(void) -{ - ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG, - (IXDP2X01_CPLD_FLASH_BANK_MASK | IXDP2X01_CPLD_FLASH_INTERN)); - - ixdp2x01_flash_data.nr_banks = - ((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1); - - platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices)); - ixp2000_uart_init(); - ixdp2x01_uart_init(); -} - -static void ixdp2401_restart(char mode, const char *cmd) -{ - /* - * Reset flash banking register so that we are pointing at - * RedBoot bank. - */ - ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG, - ((0 >> IXDP2X01_FLASH_WINDOW_BITS) - | IXDP2X01_CPLD_FLASH_INTERN)); - ixp2000_reg_wrb(IXDP2X01_CPLD_RESET_REG, 0xffffffff); - - ixp2000_restart(mode, cmd); -} - -static void ixdp280x_restart(char mode, const char *cmd) -{ - /* - * On IXDP2801 we need to write this magic sequence to the CPLD - * to cause a complete reset of the CPU and all external devices - * and move the flash bank register back to 0. - */ - unsigned long reset_reg = *IXDP2X01_CPLD_RESET_REG; - - reset_reg = 0x55AA0000 | (reset_reg & 0x0000FFFF); - ixp2000_reg_write(IXDP2X01_CPLD_RESET_REG, reset_reg); - ixp2000_reg_wrb(IXDP2X01_CPLD_RESET_REG, 0x80000000); - - ixp2000_restart(mode, cmd); -} - -#ifdef CONFIG_ARCH_IXDP2401 -MACHINE_START(IXDP2401, "Intel IXDP2401 Development Platform") - /* Maintainer: MontaVista Software, Inc. */ - .atag_offset = 0x100, - .map_io = ixdp2x01_map_io, - .init_irq = ixdp2x01_init_irq, - .timer = &ixdp2x01_timer, - .init_machine = ixdp2x01_init_machine, - .restart = ixdp2401_restart, -MACHINE_END -#endif - -#ifdef CONFIG_ARCH_IXDP2801 -MACHINE_START(IXDP2801, "Intel IXDP2801 Development Platform") - /* Maintainer: MontaVista Software, Inc. */ - .atag_offset = 0x100, - .map_io = ixdp2x01_map_io, - .init_irq = ixdp2x01_init_irq, - .timer = &ixdp2x01_timer, - .init_machine = ixdp2x01_init_machine, - .restart = ixdp280x_restart, -MACHINE_END - -/* - * IXDP28x5 is basically an IXDP2801 with a different CPU but Intel - * changed the machine ID in the bootloader - */ -MACHINE_START(IXDP28X5, "Intel IXDP2805/2855 Development Platform") - /* Maintainer: MontaVista Software, Inc. */ - .atag_offset = 0x100, - .map_io = ixdp2x01_map_io, - .init_irq = ixdp2x01_init_irq, - .timer = &ixdp2x01_timer, - .init_machine = ixdp2x01_init_machine, - .restart = ixdp280x_restart, -MACHINE_END -#endif - - |