zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/mtd/maps/uclinux.c b/ap/os/linux/linux-3.4.x/drivers/mtd/maps/uclinux.c
new file mode 100644
index 0000000..cfff454
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/mtd/maps/uclinux.c
@@ -0,0 +1,121 @@
+/****************************************************************************/
+
+/*
+ * uclinux.c -- generic memory mapped MTD driver for uclinux
+ *
+ * (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
+ */
+
+/****************************************************************************/
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/major.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <asm/io.h>
+
+/****************************************************************************/
+
+extern char _ebss;
+
+struct map_info uclinux_ram_map = {
+ .name = "RAM",
+ .phys = (unsigned long)&_ebss,
+ .size = 0,
+};
+
+static struct mtd_info *uclinux_ram_mtdinfo;
+
+/****************************************************************************/
+
+static struct mtd_partition uclinux_romfs[] = {
+ { .name = "ROMfs" }
+};
+
+#define NUM_PARTITIONS ARRAY_SIZE(uclinux_romfs)
+
+/****************************************************************************/
+
+static int uclinux_point(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, void **virt, resource_size_t *phys)
+{
+ struct map_info *map = mtd->priv;
+ *virt = map->virt + from;
+ if (phys)
+ *phys = map->phys + from;
+ *retlen = len;
+ return(0);
+}
+
+/****************************************************************************/
+
+static int __init uclinux_mtd_init(void)
+{
+ struct mtd_info *mtd;
+ struct map_info *mapp;
+
+ mapp = &uclinux_ram_map;
+ if (!mapp->size)
+ mapp->size = PAGE_ALIGN(ntohl(*((unsigned long *)(mapp->phys + 8))));
+ mapp->bankwidth = 4;
+
+ printk("uclinux[mtd]: RAM probe address=0x%x size=0x%x\n",
+ (int) mapp->phys, (int) mapp->size);
+
+ mapp->virt = ioremap_nocache(mapp->phys, mapp->size);
+
+ if (mapp->virt == 0) {
+ printk("uclinux[mtd]: ioremap_nocache() failed\n");
+ return(-EIO);
+ }
+
+ simple_map_init(mapp);
+
+ mtd = do_map_probe("map_ram", mapp);
+ if (!mtd) {
+ printk("uclinux[mtd]: failed to find a mapping?\n");
+ iounmap(mapp->virt);
+ return(-ENXIO);
+ }
+
+ mtd->owner = THIS_MODULE;
+ mtd->_point = uclinux_point;
+ mtd->priv = mapp;
+
+ uclinux_ram_mtdinfo = mtd;
+ mtd_device_register(mtd, uclinux_romfs, NUM_PARTITIONS);
+
+ return(0);
+}
+
+/****************************************************************************/
+
+static void __exit uclinux_mtd_cleanup(void)
+{
+ if (uclinux_ram_mtdinfo) {
+ mtd_device_unregister(uclinux_ram_mtdinfo);
+ map_destroy(uclinux_ram_mtdinfo);
+ uclinux_ram_mtdinfo = NULL;
+ }
+ if (uclinux_ram_map.virt) {
+ iounmap((void *) uclinux_ram_map.virt);
+ uclinux_ram_map.virt = 0;
+ }
+}
+
+/****************************************************************************/
+
+module_init(uclinux_mtd_init);
+module_exit(uclinux_mtd_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Greg Ungerer <gerg@snapgear.com>");
+MODULE_DESCRIPTION("Generic RAM based MTD for uClinux");
+
+/****************************************************************************/