diff options
Diffstat (limited to 'arch/m68k/platform/5206')
| -rw-r--r-- | arch/m68k/platform/5206/Makefile | 18 | ||||
| -rw-r--r-- | arch/m68k/platform/5206/config.c | 121 | ||||
| -rw-r--r-- | arch/m68k/platform/5206/gpio.c | 49 |
3 files changed, 188 insertions, 0 deletions
diff --git a/arch/m68k/platform/5206/Makefile b/arch/m68k/platform/5206/Makefile new file mode 100644 index 00000000000..b5db05625cf --- /dev/null +++ b/arch/m68k/platform/5206/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o + diff --git a/arch/m68k/platform/5206/config.c b/arch/m68k/platform/5206/config.c new file mode 100644 index 00000000000..9c335465e66 --- /dev/null +++ b/arch/m68k/platform/5206/config.c @@ -0,0 +1,121 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/5206/config.c + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2000-2001, Lineo Inc. (www.lineo.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m5206_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 73, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 74, + }, + { }, +}; + +static struct platform_device m5206_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m5206_uart_platform, +}; + +static struct platform_device *m5206_devices[] __initdata = { + &m5206_uart, +}; + +/***************************************************************************/ + +static void __init m5206_uart_init_line(int line, int irq) +{ + if (line == 0) { + writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR); + writeb(irq, MCFUART_BASE1 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART0); + } else if (line == 1) { + writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR); + writeb(irq, MCFUART_BASE2 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART1); + } +} + +static void __init m5206_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m5206_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m5206_uart_init_line(line, m5206_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m5206_timers_init(void) +{ + /* Timer1 is always used as system timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER1ICR); + mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1); + +#ifdef CONFIG_HIGHPROFILE + /* Timer2 is to be used as a high speed profile timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER2ICR); + mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2); +#endif +} + +/***************************************************************************/ + +void m5206_cpu_reset(void) +{ + local_irq_disable(); + /* Set watchdog to soft reset, and enabled */ + __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR); + for (;;) + /* wait for watchdog to timeout */; +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = m5206_cpu_reset; + m5206_timers_init(); + m5206_uarts_init(); + + /* Only support the external interrupts on their primary level */ + mcf_mapirq2imr(25, MCFINTC_EINT1); + mcf_mapirq2imr(28, MCFINTC_EINT4); + mcf_mapirq2imr(31, MCFINTC_EINT7); +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m5206_devices, ARRAY_SIZE(m5206_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/5206/gpio.c b/arch/m68k/platform/5206/gpio.c new file mode 100644 index 00000000000..b9ab4a120f2 --- /dev/null +++ b/arch/m68k/platform/5206/gpio.c @@ -0,0 +1,49 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * 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; version 2 of the License. + * + * 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. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PP", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFSIM_PADDR, + .podr = (void __iomem *) MCFSIM_PADAT, + .ppdr = (void __iomem *) MCFSIM_PADAT, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); |