[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/mtd/maps/uclinux.c b/src/kernel/linux/v4.14/drivers/mtd/maps/uclinux.c
new file mode 100644
index 0000000..00a8190
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/mtd/maps/uclinux.c
@@ -0,0 +1,124 @@
+/****************************************************************************/
+
+/*
+ * uclinux.c -- generic memory mapped MTD driver for uclinux
+ *
+ * (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
+ *
+ * License: GPL
+ */
+
+/****************************************************************************/
+
+#include <linux/moduleparam.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>
+#include <asm/sections.h>
+
+/****************************************************************************/
+
+#ifdef CONFIG_MTD_ROM
+#define MAP_NAME "rom"
+#else
+#define MAP_NAME "ram"
+#endif
+
+/*
+ * Blackfin uses uclinux_ram_map during startup, so it must not be static.
+ * Provide a dummy declaration to make sparse happy.
+ */
+extern struct map_info uclinux_ram_map;
+
+struct map_info uclinux_ram_map = {
+ .name = MAP_NAME,
+ .size = 0,
+};
+
+static unsigned long physaddr = -1;
+module_param(physaddr, ulong, S_IRUGO);
+
+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 (physaddr == -1)
+ mapp->phys = (resource_size_t)__bss_stop;
+ else
+ mapp->phys = physaddr;
+
+ if (!mapp->size)
+ mapp->size = PAGE_ALIGN(ntohl(*((unsigned long *)(mapp->phys + 8))));
+ mapp->bankwidth = 4;
+
+ printk("uclinux[mtd]: probe address=0x%x size=0x%x\n",
+ (int) mapp->phys, (int) mapp->size);
+
+ /*
+ * The filesystem is guaranteed to be in direct mapped memory. It is
+ * directly following the kernels own bss region. Following the same
+ * mechanism used by architectures setting up traditional initrds we
+ * use phys_to_virt to get the virtual address of its start.
+ */
+ mapp->virt = phys_to_virt(mapp->phys);
+
+ if (mapp->virt == 0) {
+ printk("uclinux[mtd]: no virtual mapping?\n");
+ return(-EIO);
+ }
+
+ simple_map_init(mapp);
+
+ mtd = do_map_probe("map_" MAP_NAME, mapp);
+ if (!mtd) {
+ printk("uclinux[mtd]: failed to find a mapping?\n");
+ 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);
+}
+device_initcall(uclinux_mtd_init);
+
+/****************************************************************************/