1 files changed, 0 insertions, 198 deletions
diff --git a/target/linux/coldfire/patches/010-Add-SRAM-char-device-driver-support-for-MCF5445x.patch b/target/linux/coldfire/patches/010-Add-SRAM-char-device-driver-support-for-MCF5445x.patch
deleted file mode 100644
index ed0516fcd9..0000000000
--- a/target/linux/coldfire/patches/010-Add-SRAM-char-device-driver-support-for-MCF5445x.patch
+++ /dev/null
@@ -1,198 +0,0 @@
-From f54ba59d355f59e4c01b5b9c7dbc2d27b47302d2 Mon Sep 17 00:00:00 2001
-From: Alison Wang <b18965@freescale.com>
-Date: Thu, 4 Aug 2011 09:59:41 +0800
-Subject: [PATCH 10/52] Add SRAM char device driver support for MCF5445x
-
-Created "/dev/sram" device file and implemented the sram mmap() operation to
-provide interface for userspace access.
-
-Signed-off-by: Alison Wang <b18965@freescale.com>
----
- drivers/char/Kconfig  |   11 ++++
- drivers/char/Makefile |    2 +
- drivers/char/sram.c   |  151 +++++++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 164 insertions(+), 0 deletions(-)
- create mode 100644 drivers/char/sram.c
-
---- a/drivers/char/Kconfig
-+++ b/drivers/char/Kconfig
-@@ -97,6 +97,17 @@ config DEVKMEM
- 	  kind of kernel debugging operations.
- 	  When in doubt, say "N".
- 
-+config DEVSRAM
-+	tristate "/dev/sram virtual device support"
-+	depends on M5445X
-+	default m
-+	help
-+	  Say Y here if you want to suppot the SRAM char device. When in
-+	  doubt, say "N".
-+
-+	  It implements mmap system call to provide interface for
-+	  user space access.
-+
- config BFIN_JTAG_COMM
- 	tristate "Blackfin JTAG Communication"
- 	depends on BLACKFIN
---- a/drivers/char/Makefile
-+++ b/drivers/char/Makefile
-@@ -87,3 +87,5 @@ obj-$(CONFIG_RAMOOPS)		+= ramoops.o
- 
- obj-$(CONFIG_JS_RTC)		+= js-rtc.o
- js-rtc-y = rtc.o
-+
-+obj-$(CONFIG_DEVSRAM)		+= sram.o
---- /dev/null
-+++ b/drivers/char/sram.c
-@@ -0,0 +1,151 @@
-+/*
-+ * linux/drivers/char/sram.c
-+ *
-+ * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
-+ * Author: Lanttor.Guo@freescale.com
-+ *
-+ * SRAM char device driver, implements mmap() system call to provide
-+ * interface for user space access.
-+ *
-+ * 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/module.h>
-+#include <linux/moduleparam.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/slab.h>
-+#include <linux/fs.h>
-+#include <linux/errno.h>
-+#include <linux/types.h>
-+#include <linux/mm.h>
-+#include <linux/kdev_t.h>
-+#include <asm/page.h>
-+#include <linux/cdev.h>
-+#include <linux/device.h>
-+
-+MODULE_LICENSE("GPL");
-+
-+static struct class *sram_class;
-+static int sram_major;
-+static int sram_minor;
-+static struct cdev sram_cdev;
-+
-+/*
-+ * Set up the cdev structure for sram.
-+ */
-+static void sram_setup_cdev(struct cdev *dev, int minor,
-+		const struct file_operations *fops)
-+{
-+	int err, devno = MKDEV(sram_major, minor);
-+
-+	cdev_init(dev, fops);
-+	dev->owner = THIS_MODULE;
-+	dev->ops = fops;
-+	err = cdev_add(dev, devno, 1);
-+	/* Fail gracefully if need be */
-+	if (err)
-+		printk(KERN_NOTICE "Error %d adding sram%d", err, minor);
-+}
-+
-+static int sram_open(struct inode *inode, struct file *filp)
-+{
-+	filp->f_mapping->backing_dev_info = &directly_mappable_cdev_bdi;
-+	return 0;
-+}
-+
-+static int sram_release(struct inode *inode, struct file *filp)
-+{
-+	return 0;
-+}
-+
-+void sram_vma_open(struct vm_area_struct *vma)
-+{
-+	printk(KERN_DEBUG "Sram VMA open, virt %lx, phys %lx\n",
-+			   vma->vm_start,
-+			   CONFIG_SRAM_BASE + (vma->vm_pgoff << PAGE_SHIFT));
-+}
-+
-+void sram_vma_close(struct vm_area_struct *vma)
-+{
-+	printk(KERN_DEBUG "Sram VMA close.\n");
-+}
-+
-+
-+static struct vm_operations_struct sram_remap_vm_ops = {
-+	.open =  sram_vma_open,
-+	.close = sram_vma_close,
-+};
-+
-+static int sram_remap_mmap(struct file *filp, struct vm_area_struct *vma)
-+{
-+	size_t size = vma->vm_end - vma->vm_start;
-+
-+	if (PAGE_ALIGN(size) > CONFIG_SRAM_SIZE) {
-+		printk(KERN_ERR "required length exceed the size "
-+		       "of physical sram (%x)\n", CONFIG_SRAM_SIZE);
-+		return -EAGAIN;
-+	}
-+
-+	if ((CONFIG_SRAM_BASE + (vma->vm_pgoff << PAGE_SHIFT) + size)
-+	    > (CONFIG_SRAM_BASE + CONFIG_SRAM_SIZE)) {
-+		printk(KERN_ERR "required sram range exceed the size "
-+		       "of phisical sram\n");
-+		return -EAGAIN;
-+	}
-+
-+	if (remap_pfn_range(vma, vma->vm_start,
-+			    (CONFIG_SRAM_BASE >> PAGE_SHIFT) + vma->vm_pgoff,
-+			    size,
-+			    vma->vm_page_prot)) {
-+		printk(KERN_ERR "remap_pfn_range faile at %s()\n", __func__);
-+		return -EAGAIN;
-+	}
-+
-+	vma->vm_ops = &sram_remap_vm_ops;
-+	return 0;
-+}
-+
-+static const struct file_operations sram_ops = {
-+	.owner   = THIS_MODULE,
-+	.open    = sram_open,
-+	.release = sram_release,
-+	.mmap    = sram_remap_mmap,
-+};
-+
-+static int __init sram_chrdev_init(void)
-+{
-+	int minor_devs = 1;
-+	int result;
-+	dev_t dev = 0;
-+	sram_minor = 0;
-+
-+	result = alloc_chrdev_region(&dev, sram_minor, minor_devs, "sram");
-+	sram_major = MAJOR(dev);
-+	if (result < 0) {
-+		printk(KERN_WARNING "sram: can't get major %d\n", sram_major);
-+		return result;
-+	}
-+
-+	sram_setup_cdev(&sram_cdev, 0, &sram_ops);
-+
-+	sram_class = class_create(THIS_MODULE, "sram");
-+	device_create(sram_class, NULL, MKDEV(sram_major, sram_minor),
-+		      NULL, "sram");
-+
-+	return 0;
-+}
-+
-+static void sram_chrdev_cleanup(void)
-+{
-+	cdev_del(&sram_cdev);
-+	device_destroy(sram_class, MKDEV(sram_major, sram_minor));
-+	class_destroy(sram_class);
-+	unregister_chrdev_region(MKDEV(sram_major, 0), 1);
-+}
-+
-+module_init(sram_chrdev_init);
-+module_exit(sram_chrdev_cleanup);