patch-2.4.6 linux/drivers/mtd/maps/dbox2-flash.c
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- Lines: 152
- Date:
Tue Jun 12 10:30:27 2001
- Orig file:
v2.4.5/linux/drivers/mtd/maps/dbox2-flash.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.5/linux/drivers/mtd/maps/dbox2-flash.c linux/drivers/mtd/maps/dbox2-flash.c
@@ -0,0 +1,151 @@
+/*
+ * $Id: dbox2-flash.c,v 1.2 2001/04/26 15:42:43 dwmw2 Exp $
+ *
+ * Nokia / Sagem D-Box 2 flash driver
+ */
+
+#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>
+#include <linux/config.h>
+
+/* partition_info gives details on the logical partitions that the split the
+ * single flash device into. If the size if zero we use up to the end of the
+ * device. */
+static struct mtd_partition partition_info[]= {{name: "BR bootloader", // raw
+ size: 128 * 1024,
+ offset: 0,
+ mask_flags: MTD_WRITEABLE},
+ {name: "PPC bootloader", // flfs
+ size: 128 * 1024,
+ offset: MTDPART_OFS_APPEND,
+ mask_flags: 0},
+ {name: "Kernel", // idxfs
+ size: 768 * 1024,
+ offset: MTDPART_OFS_APPEND,
+ mask_flags: 0},
+ {name: "System", // jffs
+ size: MTDPART_SIZ_FULL,
+ offset: MTDPART_OFS_APPEND,
+ mask_flags: 0}};
+
+#define NUM_PARTITIONS (sizeof(partition_info) / sizeof(partition_info[0]))
+
+#define WINDOW_ADDR 0x10000000
+#define WINDOW_SIZE 0x800000
+
+static struct mtd_info *mymtd;
+
+__u8 dbox2_flash_read8(struct map_info *map, unsigned long ofs)
+{
+ return __raw_readb(map->map_priv_1 + ofs);
+}
+
+__u16 dbox2_flash_read16(struct map_info *map, unsigned long ofs)
+{
+ return __raw_readw(map->map_priv_1 + ofs);
+}
+
+__u32 dbox2_flash_read32(struct map_info *map, unsigned long ofs)
+{
+ return __raw_readl(map->map_priv_1 + ofs);
+}
+
+void dbox2_flash_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ memcpy_fromio(to, map->map_priv_1 + from, len);
+}
+
+void dbox2_flash_write8(struct map_info *map, __u8 d, unsigned long adr)
+{
+ __raw_writeb(d, map->map_priv_1 + adr);
+ mb();
+}
+
+void dbox2_flash_write16(struct map_info *map, __u16 d, unsigned long adr)
+{
+ __raw_writew(d, map->map_priv_1 + adr);
+ mb();
+}
+
+void dbox2_flash_write32(struct map_info *map, __u32 d, unsigned long adr)
+{
+ __raw_writel(d, map->map_priv_1 + adr);
+ mb();
+}
+
+void dbox2_flash_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
+{
+ memcpy_toio(map->map_priv_1 + to, from, len);
+}
+
+struct map_info dbox2_flash_map = {
+ name: "D-Box 2 flash memory",
+ size: WINDOW_SIZE,
+ buswidth: 4,
+ read8: dbox2_flash_read8,
+ read16: dbox2_flash_read16,
+ read32: dbox2_flash_read32,
+ copy_from: dbox2_flash_copy_from,
+ write8: dbox2_flash_write8,
+ write16: dbox2_flash_write16,
+ write32: dbox2_flash_write32,
+ copy_to: dbox2_flash_copy_to
+};
+
+#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
+#define init_dbox2_flash init_module
+#define cleanup_dbox2_flash cleanup_module
+#endif
+
+mod_init_t init_dbox2_flash(void)
+{
+ printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR);
+ dbox2_flash_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
+ if (!dbox2_flash_map.map_priv_1) {
+ printk("Failed to ioremap\n");
+ return -EIO;
+ }
+
+ // Probe for dual Intel 28F320 or dual AMD
+ mymtd = do_map_probe("cfi", &dbox2_flash_map);
+ if (!mymtd) {
+ // Probe for single Intel 28F640
+ dbox2_flash_map.buswidth = 2;
+
+ mymtd = do_map_probe("cfi", &dbox2_flash_map);
+ }
+
+ if (mymtd) {
+ mymtd->module = THIS_MODULE;
+
+ /* Create MTD devices for each partition. */
+ add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
+
+ return 0;
+ }
+
+ iounmap((void *)dbox2_flash_map.map_priv_1);
+ return -ENXIO;
+}
+
+mod_exit_t cleanup_dbox2_flash(void)
+{
+ if (mymtd) {
+ del_mtd_partitions(mymtd);
+ map_destroy(mymtd);
+ }
+ if (dbox2_flash_map.map_priv_1) {
+ iounmap((void *)dbox2_flash_map.map_priv_1);
+ dbox2_flash_map.map_priv_1 = 0;
+ }
+}
+
+module_init(init_dbox2_flash);
+module_exit(cleanup_dbox2_flash);
+
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