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-rw-r--r--target/linux/coldfire/patches/031-Add-watchdog-driver-support-for-MCF5445x-and-MCF547x.patch338
1 files changed, 0 insertions, 338 deletions
diff --git a/target/linux/coldfire/patches/031-Add-watchdog-driver-support-for-MCF5445x-and-MCF547x.patch b/target/linux/coldfire/patches/031-Add-watchdog-driver-support-for-MCF5445x-and-MCF547x.patch
deleted file mode 100644
index 5362aa3334..0000000000
--- a/target/linux/coldfire/patches/031-Add-watchdog-driver-support-for-MCF5445x-and-MCF547x.patch
+++ /dev/null
@@ -1,338 +0,0 @@
-From 42bf8a598049f6cb3c90b1f28a2f1b8daebe3de8 Mon Sep 17 00:00:00 2001
-From: Alison Wang <b18965@freescale.com>
-Date: Thu, 4 Aug 2011 09:59:47 +0800
-Subject: [PATCH 31/52] Add watchdog driver support for MCF5445x and MCF547x/MCF548x
-
-Add watchdog driver support for MCF5445x and MCF547x/MCF548x.
-
-Signed-off-by: Alison Wang <b18965@freescale.com>
----
- drivers/watchdog/Kconfig | 9 ++
- drivers/watchdog/Makefile | 1 +
- drivers/watchdog/mcf_wdt.c | 292 ++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 302 insertions(+), 0 deletions(-)
- create mode 100644 drivers/watchdog/mcf_wdt.c
-
---- a/drivers/watchdog/Kconfig
-+++ b/drivers/watchdog/Kconfig
-@@ -974,6 +974,15 @@ config BCM63XX_WDT
-
- # PARISC Architecture
-
-+# ColdFire Architecture
-+
-+config COLDFIRE_WATCHDOG
-+ tristate "ColdFire watchdog support"
-+ depends on M547X_8X || M5445X || M5441X
-+ help
-+ To compile this driver as a module, choose M here: the
-+ module will be called softdog.
-+
- # POWERPC Architecture
-
- config GEF_WDT
---- a/drivers/watchdog/Makefile
-+++ b/drivers/watchdog/Makefile
-@@ -107,6 +107,7 @@ obj-$(CONFIG_SBC_EPX_C3_WATCHDOG) += sbc
-
- # M68K Architecture
- obj-$(CONFIG_M54xx_WATCHDOG) += m54xx_wdt.o
-+obj-$(CONFIG_COLDFIRE_WATCHDOG) += mcf_wdt.o
-
- # MIPS Architecture
- obj-$(CONFIG_ATH79_WDT) += ath79_wdt.o
---- /dev/null
-+++ b/drivers/watchdog/mcf_wdt.c
-@@ -0,0 +1,292 @@
-+/*
-+ * drivers/watchdog/mcf_wdt.c
-+ *
-+ * Watchdog driver for ColdFire processors
-+ *
-+ * Copyright (C) 2006-2007, 2009-2011 Freescale Semiconductor, Inc.
-+ * All Rights Reserved.
-+ *
-+ * Author: Shrek Wu<B16972@freesale.com>
-+ * ChengJu Cai<B22600@freesale.com>
-+ *
-+ * 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 <linux/module.h>
-+#include <linux/moduleparam.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <linux/fs.h>
-+#include <linux/miscdevice.h>
-+#include <linux/watchdog.h>
-+#include <linux/init.h>
-+#include <linux/bitops.h>
-+
-+#include <linux/uaccess.h>
-+#include <asm/coldfire.h>
-+#include <asm/mcfsim.h>
-+
-+static int nowayout;
-+static unsigned int heartbeat = MCF_GPT_MAX_TIMEOUT;
-+static unsigned long wdt_status;
-+
-+#define WDT_IN_USE 0
-+#define WDT_OK_TO_CLOSE 1
-+
-+static unsigned long wdt_tick_rate;
-+
-+#ifdef CONFIG_M547X_8X
-+static int
-+wdt_enable(int time)
-+{
-+ if (time > 30 || time < 1)
-+ return -EINVAL;
-+
-+ heartbeat = time;
-+
-+ MCF_GPT_GMS0 = 0;
-+ MCF_GPT_GCIR0 = MCF_GPT_GCIR_PRE(heartbeat * wdt_tick_rate) |
-+ MCF_GPT_GCIR_CNT(0xffff);
-+ MCF_GPT_GMS0 = MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS_WDEN |
-+ MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS_GPIO;
-+
-+ return 0;
-+}
-+
-+static void
-+wdt_disable(void)
-+{
-+ MCF_GPT_GMS0 = 0;
-+}
-+
-+static void
-+wdt_keepalive(void)
-+{
-+ MCF_GPT_GMS0 = MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS0;
-+}
-+
-+#elif defined(CONFIG_M5445X) || defined(CONFIG_M5441X)
-+
-+/* Enable watchdog and set time-out */
-+static int
-+wdt_enable(int time)
-+{
-+ unsigned int sign = 0x01 << 31;
-+ int i = 0, timeout_n = 31;
-+ int max_timeout = sign / MCF_BUSCLK;
-+ unsigned int count;
-+
-+ if (time > max_timeout || time < 1)
-+ return -EINVAL;
-+
-+ count = time * MCF_BUSCLK;
-+
-+ for (i = 0; i < 31; i++) {
-+ if (count & (sign >> i)) {
-+ if ((count & (~(sign >> i))) == 0)
-+ timeout_n = 31 - i;
-+ else
-+ timeout_n = 31 - i + 1;
-+ break;
-+ }
-+ }
-+
-+ heartbeat = (unsigned int)(0x01 << timeout_n) / MCF_BUSCLK;
-+
-+ MCF_SCM_CWCR = MCF_SCM_CWCR_CWE
-+ | MCF_SCM_CWCR_CWRI(0x02)
-+ | MCF_SCM_CWCR_CWT(timeout_n);
-+
-+ return 0;
-+}
-+
-+/* Disable the watchdog */
-+static void
-+wdt_disable(void)
-+{
-+ MCF_SCM_CWCR = 0x00;
-+}
-+
-+/* Reset the watchdog timer counter */
-+static void
-+wdt_keepalive(void)
-+{
-+ MCF_SCM_CWSR = 0x55;
-+ MCF_SCM_CWSR = 0xAA;
-+}
-+#endif
-+
-+static int
-+mcf_wdt_open(struct inode *inode, struct file *file)
-+{
-+ int ret;
-+ if (test_and_set_bit(WDT_IN_USE, &wdt_status))
-+ return -EBUSY;
-+
-+ clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-+
-+ ret = wdt_enable(heartbeat);
-+ if (ret)
-+ return ret;
-+
-+ return nonseekable_open(inode, file);
-+}
-+
-+static ssize_t
-+mcf_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
-+{
-+ if (len) {
-+ if (!nowayout) {
-+ size_t i;
-+
-+ clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-+
-+ for (i = 0; i != len; i++) {
-+ char c;
-+
-+ if (get_user(c, data + i))
-+ return -EFAULT;
-+ if (c == 'V')
-+ set_bit(WDT_OK_TO_CLOSE, &wdt_status);
-+ }
-+ }
-+ wdt_keepalive();
-+ }
-+
-+ return len;
-+}
-+
-+
-+static struct watchdog_info ident = {
-+ .options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT |
-+ WDIOF_KEEPALIVEPING,
-+ .identity = "Coldfire Watchdog",
-+};
-+
-+static long
-+mcf_wdt_ioctl(struct file *file, unsigned int cmd, unsigned long __user arg)
-+{
-+ long ret = -ENOIOCTLCMD;
-+ int time = 0;
-+
-+ switch (cmd) {
-+ case WDIOC_GETSUPPORT:
-+ ret = copy_to_user((struct watchdog_info *)arg, &ident,
-+ sizeof(ident)) ? -EFAULT : 0;
-+ break;
-+
-+ case WDIOC_GETSTATUS:
-+ ret = put_user(0, (int *)arg);
-+ break;
-+
-+ case WDIOC_GETBOOTSTATUS:
-+ ret = put_user(0, (int *)arg);
-+ break;
-+
-+ case WDIOC_SETTIMEOUT:
-+ ret = get_user(time, (int *)arg);
-+ if (ret)
-+ break;
-+
-+ ret = wdt_enable(time);
-+ if (ret)
-+ break;
-+ ret = put_user(heartbeat, (int *)arg);
-+ break;
-+
-+ case WDIOC_GETTIMEOUT:
-+ ret = put_user(heartbeat, (int *)arg);
-+ break;
-+
-+ case WDIOC_KEEPALIVE:
-+ wdt_keepalive();
-+ ret = 0;
-+ break;
-+ }
-+
-+ return ret;
-+}
-+
-+static int
-+mcf_wdt_release(struct inode *inode, struct file *file)
-+{
-+ if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) {
-+#ifdef CONFIG_M547X_8X
-+ MCF_GPT_GCIR0 = (0x0A << 16) | 0x09;
-+ MCF_GPT_GMS0 = MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS0;
-+#else
-+ wdt_keepalive();
-+#endif
-+ } else {
-+ printk(KERN_CRIT "WATCHDOG: Device closed unexpectdly\n");
-+ wdt_disable();
-+ }
-+
-+ clear_bit(WDT_IN_USE, &wdt_status);
-+ clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-+
-+#ifdef CONFIG_M547X_8X
-+ /*disable the XLB priority, otherwise the watchdog reset may fail*/
-+ MCF_XARB_PRIEN = 0;
-+ /* Also disable the PCI, Ugly! But there is issue between PCI and
-+ * watchdog. Otherwise the watchdog reset may fail, only valuable
-+ * for testing!
-+ */
-+ MCF_SPCR &= ~0x02;
-+ asm("tpf");
-+#endif
-+
-+ return 0;
-+}
-+
-+
-+static const struct file_operations mcf_wdt_fops = {
-+ .owner = THIS_MODULE,
-+ .llseek = no_llseek,
-+ .write = mcf_wdt_write,
-+ .unlocked_ioctl = mcf_wdt_ioctl,
-+ .open = mcf_wdt_open,
-+ .release = mcf_wdt_release,
-+};
-+
-+static struct miscdevice mcf_wdt_miscdev = {
-+ .minor = WATCHDOG_MINOR,
-+ .name = "watchdog",
-+ .fops = &mcf_wdt_fops,
-+};
-+
-+static int __init mcf_wdt_init(void)
-+{
-+ wdt_tick_rate = MCF_BUSCLK/0xffff;
-+#ifdef CONFIG_WATCHDOG_NOWAYOUT
-+ nowayout = 1;
-+#else
-+ nowayout = 0;
-+#endif
-+ printk(KERN_INFO "ColdFire watchdog driver is loaded.\n");
-+
-+ return misc_register(&mcf_wdt_miscdev);
-+}
-+
-+static void __exit mcf_wdt_exit(void)
-+{
-+ misc_deregister(&mcf_wdt_miscdev);
-+}
-+
-+module_init(mcf_wdt_init);
-+module_exit(mcf_wdt_exit);
-+
-+MODULE_AUTHOR("Deepak Saxena");
-+MODULE_DESCRIPTION("ColdFire Watchdog");
-+
-+module_param(heartbeat, int, 0);
-+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds (default 60s)");
-+
-+module_param(nowayout, int, 0);
-+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
-+
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-+
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