patch-2.4.6 linux/drivers/mtd/maps/iq80310.c
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- Lines: 134
- Date:
Tue Jun 12 10:30:27 2001
- Orig file:
v2.4.5/linux/drivers/mtd/maps/iq80310.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.5/linux/drivers/mtd/maps/iq80310.c linux/drivers/mtd/maps/iq80310.c
@@ -0,0 +1,133 @@
+/*
+ * $Id: iq80310.c,v 1.3 2001/04/26 15:40:23 dwmw2 Exp $
+ *
+ * Mapping for the Intel XScale IQ80310 evaluation board
+ *
+ * Author: Nicolas Pitre
+ * Copyright: (C) 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+
+#define WINDOW_ADDR 0
+#define WINDOW_SIZE 8*1024*1024
+#define BUSWIDTH 1
+
+static struct mtd_info *mymtd;
+
+static __u8 iq80310_read8(struct map_info *map, unsigned long ofs)
+{
+ return *(__u8 *)(map->map_priv_1 + ofs);
+}
+
+static __u16 iq80310_read16(struct map_info *map, unsigned long ofs)
+{
+ return *(__u16 *)(map->map_priv_1 + ofs);
+}
+
+static __u32 iq80310_read32(struct map_info *map, unsigned long ofs)
+{
+ return *(__u32 *)(map->map_priv_1 + ofs);
+}
+
+static void iq80310_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ memcpy(to, (void *)(map->map_priv_1 + from), len);
+}
+
+static void iq80310_write8(struct map_info *map, __u8 d, unsigned long adr)
+{
+ *(__u8 *)(map->map_priv_1 + adr) = d;
+}
+
+static void iq80310_write16(struct map_info *map, __u16 d, unsigned long adr)
+{
+ *(__u16 *)(map->map_priv_1 + adr) = d;
+}
+
+static void iq80310_write32(struct map_info *map, __u32 d, unsigned long adr)
+{
+ *(__u32 *)(map->map_priv_1 + adr) = d;
+}
+
+static void iq80310_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
+{
+ memcpy((void *)(map->map_priv_1 + to), from, len);
+}
+
+static struct map_info iq80310_map = {
+ name: "IQ80310 flash",
+ size: WINDOW_SIZE,
+ buswidth: BUSWIDTH,
+ read8: iq80310_read8,
+ read16: iq80310_read16,
+ read32: iq80310_read32,
+ copy_from: iq80310_copy_from,
+ write8: iq80310_write8,
+ write16: iq80310_write16,
+ write32: iq80310_write32,
+ copy_to: iq80310_copy_to
+};
+
+static struct mtd_partition iq80310_partitions[3] = {
+ {
+ name: "firmware",
+ size: 0x00080000,
+ offset: 0,
+ mask_flags: MTD_WRITEABLE /* force read-only */
+ },{
+ name: "kernel",
+ size: 0x00080000,
+ offset: 0x00080000,
+ },{
+ name: "filesystem",
+ size: 0x00700000,
+ offset: 0x00100000
+ }
+};
+
+static int __init init_iq80310(void)
+{
+ iq80310_map.map_priv_1 = (unsigned long)__ioremap(WINDOW_ADDR, WINDOW_SIZE, 0);
+
+ if (!iq80310_map.map_priv_1) {
+ printk("Failed to ioremap\n");
+ return -EIO;
+ }
+ mymtd = do_map_probe("cfi", &iq80310_map);
+ if (mymtd) {
+ mymtd->module = THIS_MODULE;
+ add_mtd_partitions(mymtd, iq80310_partitions, 3);
+ return 0;
+ }
+
+ iounmap((void *)iq80310_map.map_priv_1);
+ return -ENXIO;
+}
+
+static void __exit cleanup_iq80310(void)
+{
+ if (mymtd) {
+ del_mtd_partitions(mymtd);
+ map_destroy(mymtd);
+ }
+ if (iq80310_map.map_priv_1) {
+ iounmap((void *)iq80310_map.map_priv_1);
+ iq80310_map.map_priv_1 = 0;
+ }
+}
+
+module_init(init_iq80310);
+module_exit(cleanup_iq80310);
+
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