diff options
6 files changed, 455 insertions, 10 deletions
diff --git a/target/linux/danube/config-2.6.23 b/target/linux/danube/config-2.6.23 index e286cff61..f575f6f13 100644 --- a/target/linux/danube/config-2.6.23 +++ b/target/linux/danube/config-2.6.23 @@ -183,3 +183,4 @@ CONFIG_TRAD_SIGNALS=y # CONFIG_VGASTATE is not set # CONFIG_VIA_RHINE is not set CONFIG_ZONE_DMA_FLAG=0 +CONFIG_DANUBE_WDT=y diff --git a/target/linux/danube/files/arch/mips/danube/Kconfig b/target/linux/danube/files/arch/mips/danube/Kconfig index 95b7f6fee..135b640b4 100644 --- a/target/linux/danube/files/arch/mips/danube/Kconfig +++ b/target/linux/danube/files/arch/mips/danube/Kconfig @@ -12,5 +12,9 @@ config MTD_DANUBE bool "Danube flash map" default y +config DANUBE_WDT + bool "Danube watchdog" + default y + endmenu diff --git a/target/linux/danube/files/drivers/char/watchdog/danube_wdt.c b/target/linux/danube/files/drivers/char/watchdog/danube_wdt.c new file mode 100644 index 000000000..036a4ece4 --- /dev/null +++ b/target/linux/danube/files/drivers/char/watchdog/danube_wdt.c @@ -0,0 +1,361 @@ +/* + * 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. + * + * Copyright (C) 2006 infineon + * Copyright (C) 2007 John Crispin <blogic@openwrt.org> + * + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/fs.h> +#include <linux/errno.h> +#include <linux/proc_fs.h> +#include <linux/stat.h> +#include <linux/tty.h> +#include <linux/selection.h> +#include <linux/kmod.h> +#include <linux/vmalloc.h> +#include <linux/kdev_t.h> +#include <linux/ioctl.h> +#include <asm/uaccess.h> +#include <asm/system.h> +#include <asm-mips/danube/danube_wdt.h> +#include <asm-mips/danube/danube.h> + +extern unsigned int danube_get_fpi_hz (void); + +static int danube_wdt_inuse = 0; +static int danube_wdt_major = 0; + +int +danube_wdt_enable (unsigned int timeout) +{ + unsigned int wdt_cr = 0; + unsigned int wdt_reload = 0; + unsigned int wdt_clkdiv, clkdiv, wdt_pwl, pwl, ffpi; + + /* clock divider & prewarning limit */ + switch (clkdiv = DANUBE_BIU_WDT_CR_CLKDIV_GET(readl(DANUBE_BIU_WDT_CR))) + { + case 0: + wdt_clkdiv = 1; + break; + case 1: + wdt_clkdiv = 64; + break; + case 2: + wdt_clkdiv = 4096; + break; + case 3: + wdt_clkdiv = 262144; + break; + } + + switch (pwl = DANUBE_BIU_WDT_CR_PWL_GET (readl(DANUBE_BIU_WDT_CR))) + { + case 0: + wdt_pwl = 0x8000; + break; + case 1: + wdt_pwl = 0x4000; + break; + case 2: + wdt_pwl = 0x2000; + break; + case 3: + wdt_pwl = 0x1000; + break; + } + + //TODO + printk("WARNING FUNCTION CALL MISSING!!!"); + //ffpi = cgu_get_io_region_clock(); + printk("cpu clock = %d\n", ffpi); + + /* caculate reload value */ + wdt_reload = (timeout * (ffpi / wdt_clkdiv)) + wdt_pwl; + + printk("wdt_pwl=0x%x, wdt_clkdiv=%d, ffpi=%d, wdt_reload = 0x%x\n", + wdt_pwl, wdt_clkdiv, ffpi, wdt_reload); + + if (wdt_reload > 0xFFFF) { + printk ("timeout too large %d\n", timeout); + return -EINVAL; + } + + /* Write first part of password access */ + *DANUBE_BIU_WDT_CR = DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW1); + + wdt_cr = *DANUBE_BIU_WDT_CR; + wdt_cr &= (!DANUBE_BIU_WDT_CR_PW_SET (0xff) & + !DANUBE_BIU_WDT_CR_PWL_SET (0x3) & + !DANUBE_BIU_WDT_CR_CLKDIV_SET (0x3) & + !DANUBE_BIU_WDT_CR_RELOAD_SET (0xffff)); + + wdt_cr |= (DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW2) | + DANUBE_BIU_WDT_CR_PWL_SET (pwl) | + DANUBE_BIU_WDT_CR_CLKDIV_SET (clkdiv) | + DANUBE_BIU_WDT_CR_RELOAD_SET (wdt_reload) | + DANUBE_BIU_WDT_CR_GEN); + + /* Set reload value in second password access */ + *DANUBE_BIU_WDT_CR = wdt_cr; + printk ("enabled\n"); + return 0; +} + +void +danube_wdt_disable (void) +{ + /* Write first part of password access */ + writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); + + /* Disable the watchdog in second password access (GEN=0) */ + writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW2), DANUBE_BIU_WDT_CR); +} + +void +danube_wdt_low_power (int en) +{ + unsigned int wdt_cr = 0; + + writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); + + wdt_cr = readl(DANUBE_BIU_WDT_CR); + + if (en) + { + wdt_cr &= (!DANUBE_BIU_WDT_CR_PW_SET(0xff)); + wdt_cr |= + (DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW2) | + DANUBE_BIU_WDT_CR_LPEN); + } + else { + wdt_cr &= (!DANUBE_BIU_WDT_CR_PW_SET (0xff) & + !DANUBE_BIU_WDT_CR_LPEN); + wdt_cr |= DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW2); + } + + /* Set reload value in second password access */ + writel(wdt_cr, DANUBE_BIU_WDT_CR); +} + +void +danube_wdt_debug_suspend (int en) +{ + unsigned int wdt_cr = 0; + + writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); + + wdt_cr = readl(DANUBE_BIU_WDT_CR); + if (en) + { + wdt_cr &= (!DANUBE_BIU_WDT_CR_PW_SET (0xff)); + wdt_cr |= + (DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW2) | + DANUBE_BIU_WDT_CR_DSEN); + } + else { + wdt_cr &= (!DANUBE_BIU_WDT_CR_PW_SET (0xff) & + !DANUBE_BIU_WDT_CR_DSEN); + wdt_cr |= DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW2); + } + + /* Set reload value in second password access */ + writel(wdt_cr, DANUBE_BIU_WDT_CR); +} + +void +danube_wdt_prewarning_limit (int pwl) +{ + unsigned int wdt_cr = 0; + + wdt_cr = readl(DANUBE_BIU_WDT_CR); + writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); + + wdt_cr &= 0xff00ffff; //(!DANUBE_BIU_WDT_CR_PW_SET(0xff)); + wdt_cr &= 0xf3ffffff; //(!DANUBE_BIU_WDT_CR_PWL_SET(3)); + wdt_cr |= (DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW2) | + DANUBE_BIU_WDT_CR_PWL_SET (pwl)); + + /* Set reload value in second password access */ + writel(wdt_cr, DANUBE_BIU_WDT_CR); +} + +void +danube_wdt_set_clkdiv (int clkdiv) +{ + unsigned int wdt_cr = 0; + + wdt_cr = readl(DANUBE_BIU_WDT_CR); + writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); + + wdt_cr &= 0xff00ffff; //(!DANUBE_BIU_WDT_CR_PW_SET(0xff)); + wdt_cr &= 0xfcffffff; //(!DANUBE_BIU_WDT_CR_CLKDIV_SET(3)); + wdt_cr |= (DANUBE_BIU_WDT_CR_PW_SET (DANUBE_WDT_PW2) | + DANUBE_BIU_WDT_CR_CLKDIV_SET (clkdiv)); + + /* Set reload value in second password access */ + writel(wdt_cr, DANUBE_BIU_WDT_CR); +} + +static int +danube_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd, + unsigned long arg) +{ + int result = 0; + int en = 0; + int istatus; + int pwl, clkdiv; + static int timeout = -1; + + switch (cmd) + { + case DANUBE_WDT_IOC_START: + printk("enable watch dog timer!\n"); + if (copy_from_user((void *) &timeout, (void *) arg, sizeof (int))) + { + printk ("invalid argument\n"); + result = -EINVAL; + } else { + if ((result = danube_wdt_enable (timeout)) < 0) + timeout = -1; + } + break; + + case DANUBE_WDT_IOC_STOP: + printk("disable watch dog timer\n"); + timeout = -1; + danube_wdt_disable(); + break; + + case DANUBE_WDT_IOC_PING: + if (timeout < 0) + result = -EIO; + else + result = danube_wdt_enable(timeout); + break; + + case DANUBE_WDT_IOC_SET_PWL: + if (copy_from_user((void *) &pwl, (void *) arg, sizeof (int))) + result = -EINVAL; + danube_wdt_prewarning_limit(pwl); + break; + + case DANUBE_WDT_IOC_SET_DSEN: + if (copy_from_user((void *) &en, (void *) arg, sizeof (int))) + result = -EINVAL; + danube_wdt_debug_suspend (en); + break; + + case DANUBE_WDT_IOC_SET_LPEN: + if (copy_from_user((void *) &en, (void *) arg, sizeof (int))) + result = -EINVAL; + danube_wdt_low_power(en); + break; + + case DANUBE_WDT_IOC_SET_CLKDIV: + if (copy_from_user((void *) &clkdiv, (void *) arg, sizeof (int))) + result = -EINVAL; + danube_wdt_set_clkdiv (clkdiv); + break; + + case DANUBE_WDT_IOC_GET_STATUS: + istatus = readl(DANUBE_BIU_WDT_SR); + copy_to_user((int *) arg, (int *) &istatus, sizeof (int)); + break; + } + + return result; +} + +static int +danube_wdt_open (struct inode *inode, struct file *file) +{ + if (danube_wdt_inuse) + return -EBUSY; + danube_wdt_inuse = 1; + + return 0; +} + +static int +danube_wdt_release (struct inode *inode, struct file *file) +{ + danube_wdt_inuse = 0; + + return 0; +} + +int +danube_wdt_register_proc_read (char *buf, char **start, off_t offset, int count, + int *eof, void *data) +{ + int len = 0; + len += sprintf (buf + len, "DANUBE_BIU_WDT_PROC_READ\n"); + + len += sprintf (buf + len, "DANUBE_BIU_WDT_CR(0x%08x) : 0x%08x\n", + (unsigned int)DANUBE_BIU_WDT_CR, + readl(DANUBE_BIU_WDT_CR)); + len += sprintf (buf + len, "DANUBE_BIU_WDT_SR(0x%08x) : 0x%08x\n", + (unsigned int)DANUBE_BIU_WDT_SR, + readl(DANUBE_BIU_WDT_SR)); + + *eof = 1; + + return len; +} + +static struct file_operations wdt_fops = { + .owner = THIS_MODULE, + .ioctl = danube_wdt_ioctl, + .open = danube_wdt_open, + .release = danube_wdt_release, +}; + +int __init +danube_wdt_init_module (void) +{ + danube_wdt_major = register_chrdev(0, "wdt", &wdt_fops); + + if (danube_wdt_major < 0) + { + printk("cannot register watchdog device\n"); + + return -EINVAL; + } + + create_proc_read_entry("danube_wdt", 0, NULL, danube_wdt_register_proc_read, NULL); + + printk("danube watchdog loaded\n"); + + return 0; +} + +void +danube_wdt_cleanup_module (void) +{ + unregister_chrdev(danube_wdt_major, "wdt"); + remove_proc_entry("danube_wdt", NULL); +} + +module_init(danube_wdt_init_module); +module_exit(danube_wdt_cleanup_module); diff --git a/target/linux/danube/files/include/asm-mips/danube/danube.h b/target/linux/danube/files/include/asm-mips/danube/danube.h index d2c925cd3..5809fd94c 100644 --- a/target/linux/danube/files/include/asm-mips/danube/danube.h +++ b/target/linux/danube/files/include/asm-mips/danube/danube.h @@ -285,4 +285,23 @@ #define DANUBE_GPIO_P1_ALTSEL1 ((u32*)(DANUBE_GPIO_BASE_ADDR + 0x0050)) #define DANUBE_GPIO_P1_DIR ((u32*)(DANUBE_GPIO_BASE_ADDR + 0x0048)) + +/*------------ WDT */ + +#define DANUBE_WDT_BASE_ADDR (KSEG1 + 0x1F880000) + +#define DANUBE_BIU_WDT_CR ((u32*)(DANUBE_WDT_BASE_ADDR + 0x03F0)) +#define DANUBE_BIU_WDT_SR ((u32*)(DANUBE_WDT_BASE_ADDR + 0x03F8)) + +#define DANUBE_BIU_WDT_CR_GEN (1 << 31) +#define DANUBE_BIU_WDT_CR_DSEN (1 << 30) +#define DANUBE_BIU_WDT_CR_LPEN (1 << 29) + +#define DANUBE_BIU_WDT_CR_CLKDIV_GET(value) (((value) >> 24) & ((1 << 2) - 1)) +#define DANUBE_BIU_WDT_CR_PWL_GET(value) (((value) >> 26) & ((1 << 2) - 1)) +#define DANUBE_BIU_WDT_CR_PWL_SET(value) ((((1 << 2) - 1) & (value)) << 26) +#define DANUBE_BIU_WDT_CR_PW_SET(value) (((( 1 << 8) - 1) & (value)) << 16) +#define DANUBE_BIU_WDT_CR_CLKDIV_SET(value) (((( 1 << 2) - 1) & (value)) << 24) +#define DANUBE_BIU_WDT_CR_RELOAD_SET(value) (((( 1 << 16) - 1) & (value)) << 0) + #endif diff --git a/target/linux/danube/files/include/asm-mips/danube/danube_wdt.h b/target/linux/danube/files/include/asm-mips/danube/danube_wdt.h new file mode 100644 index 000000000..1c31fc9ee --- /dev/null +++ b/target/linux/danube/files/include/asm-mips/danube/danube_wdt.h @@ -0,0 +1,48 @@ +/* + * 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. + * + * Copyright (C) 2005 infineon + * Copyright (C) 2007 John Crispin <blogic@openwrt.org> + * + */ + +#ifndef DANUBE_WDT_H +#define DANUBE_WDT_H + +/* Danube wdt ioctl control */ +#define DANUBE_WDT_IOC_MAGIC 0xc0 +#define DANUBE_WDT_IOC_START _IOW(DANUBE_WDT_IOC_MAGIC, 0, int) +#define DANUBE_WDT_IOC_STOP _IO(DANUBE_WDT_IOC_MAGIC, 1) +#define DANUBE_WDT_IOC_PING _IO(DANUBE_WDT_IOC_MAGIC, 2) +#define DANUBE_WDT_IOC_SET_PWL _IOW(DANUBE_WDT_IOC_MAGIC, 3, int) +#define DANUBE_WDT_IOC_SET_DSEN _IOW(DANUBE_WDT_IOC_MAGIC, 4, int) +#define DANUBE_WDT_IOC_SET_LPEN _IOW(DANUBE_WDT_IOC_MAGIC, 5, int) +#define DANUBE_WDT_IOC_GET_STATUS _IOR(DANUBE_WDT_IOC_MAGIC, 6, int) +#define DANUBE_WDT_IOC_SET_CLKDIV _IOW(DANUBE_WDT_IOC_MAGIC, 7, int) + +/* password 1 and 2 */ +#define DANUBE_WDT_PW1 0x000000BE +#define DANUBE_WDT_PW2 0x000000DC + +#define DANUBE_WDT_CLKDIV0_VAL 1 +#define DANUBE_WDT_CLKDIV1_VAL 64 +#define DANUBE_WDT_CLKDIV2_VAL 4096 +#define DANUBE_WDT_CLKDIV3_VAL 262144 +#define DANUBE_WDT_CLKDIV0 0 +#define DANUBE_WDT_CLKDIV1 1 +#define DANUBE_WDT_CLKDIV2 2 +#define DANUBE_WDT_CLKDIV3 3 + +#endif diff --git a/target/linux/danube/patches/110-drivers.patch b/target/linux/danube/patches/110-drivers.patch index 031ece6ca..3004672dc 100644 --- a/target/linux/danube/patches/110-drivers.patch +++ b/target/linux/danube/patches/110-drivers.patch @@ -1,7 +1,7 @@ Index: linux-2.6.23/drivers/serial/Kconfig =================================================================== ---- linux-2.6.23.orig/drivers/serial/Kconfig 2007-11-04 17:29:22.000000000 +0100 -+++ linux-2.6.23/drivers/serial/Kconfig 2007-11-04 17:29:25.000000000 +0100 +--- linux-2.6.23.orig/drivers/serial/Kconfig 2007-12-10 21:38:39.000000000 +0100 ++++ linux-2.6.23/drivers/serial/Kconfig 2007-12-10 21:38:42.000000000 +0100 @@ -1259,4 +1259,10 @@ Currently, only 8250 compatible ports are supported, but others can easily be added. @@ -15,8 +15,8 @@ Index: linux-2.6.23/drivers/serial/Kconfig endmenu Index: linux-2.6.23/drivers/serial/Makefile =================================================================== ---- linux-2.6.23.orig/drivers/serial/Makefile 2007-11-04 17:29:22.000000000 +0100 -+++ linux-2.6.23/drivers/serial/Makefile 2007-11-04 17:29:25.000000000 +0100 +--- linux-2.6.23.orig/drivers/serial/Makefile 2007-12-10 21:38:39.000000000 +0100 ++++ linux-2.6.23/drivers/serial/Makefile 2007-12-10 21:38:42.000000000 +0100 @@ -64,3 +64,4 @@ obj-$(CONFIG_SERIAL_NETX) += netx-serial.o obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o @@ -24,8 +24,8 @@ Index: linux-2.6.23/drivers/serial/Makefile +obj-$(CONFIG_SERIAL_DANUBE) += danube_asc.o Index: linux-2.6.23/drivers/mtd/maps/Makefile =================================================================== ---- linux-2.6.23.orig/drivers/mtd/maps/Makefile 2007-11-04 17:29:22.000000000 +0100 -+++ linux-2.6.23/drivers/mtd/maps/Makefile 2007-11-04 17:29:25.000000000 +0100 +--- linux-2.6.23.orig/drivers/mtd/maps/Makefile 2007-12-10 21:38:39.000000000 +0100 ++++ linux-2.6.23/drivers/mtd/maps/Makefile 2007-12-10 21:38:42.000000000 +0100 @@ -71,3 +71,4 @@ obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o @@ -33,8 +33,8 @@ Index: linux-2.6.23/drivers/mtd/maps/Makefile +obj-$(CONFIG_MTD_DANUBE) += danube.o Index: linux-2.6.23/drivers/net/Kconfig =================================================================== ---- linux-2.6.23.orig/drivers/net/Kconfig 2007-11-04 17:29:25.000000000 +0100 -+++ linux-2.6.23/drivers/net/Kconfig 2007-11-11 16:48:24.000000000 +0100 +--- linux-2.6.23.orig/drivers/net/Kconfig 2007-12-10 21:38:42.000000000 +0100 ++++ linux-2.6.23/drivers/net/Kconfig 2007-12-10 21:38:42.000000000 +0100 @@ -339,6 +339,18 @@ source "drivers/net/arm/Kconfig" @@ -56,8 +56,8 @@ Index: linux-2.6.23/drivers/net/Kconfig depends on ARM || MIPS Index: linux-2.6.23/drivers/net/Makefile =================================================================== ---- linux-2.6.23.orig/drivers/net/Makefile 2007-11-04 17:29:25.000000000 +0100 -+++ linux-2.6.23/drivers/net/Makefile 2007-11-11 16:47:14.000000000 +0100 +--- linux-2.6.23.orig/drivers/net/Makefile 2007-12-10 21:38:42.000000000 +0100 ++++ linux-2.6.23/drivers/net/Makefile 2007-12-10 21:38:42.000000000 +0100 @@ -208,6 +208,7 @@ obj-$(CONFIG_FEC_8XX) += fec_8xx/ obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o @@ -66,3 +66,15 @@ Index: linux-2.6.23/drivers/net/Makefile obj-$(CONFIG_MACB) += macb.o +Index: linux-2.6.23/drivers/char/watchdog/Makefile +=================================================================== +--- linux-2.6.23.orig/drivers/char/watchdog/Makefile 2007-12-10 21:41:51.000000000 +0100 ++++ linux-2.6.23/drivers/char/watchdog/Makefile 2007-12-10 21:42:30.000000000 +0100 +@@ -90,6 +90,7 @@ + obj-$(CONFIG_INDYDOG) += indydog.o + obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o + obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o ++obj-$(CONFIG_DANUBE_WDT) += danube_wdt.o + + # PARISC Architecture + |