Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/mtd/maps/db1550-flash.c b/drivers/mtd/maps/db1550-flash.c
new file mode 100644
index 0000000..d213888
--- /dev/null
+++ b/drivers/mtd/maps/db1550-flash.c
@@ -0,0 +1,187 @@
+/*
+ * Flash memory access on Alchemy Db1550 board
+ *
+ * $Id: db1550-flash.c,v 1.7 2004/11/04 13:24:14 gleixner Exp $
+ *
+ * (C) 2004 Embedded Edge, LLC, based on db1550-flash.c:
+ * (C) 2003, 2004 Pete Popov <ppopov@embeddedalley.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+
+#ifdef DEBUG_RW
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
+static unsigned long window_addr;
+static unsigned long window_size;
+
+
+static struct map_info db1550_map = {
+ .name = "Db1550 flash",
+};
+
+static unsigned char flash_bankwidth = 4;
+
+/*
+ * Support only 64MB NOR Flash parts
+ */
+
+#if defined(CONFIG_MTD_DB1550_BOOT) && defined(CONFIG_MTD_DB1550_USER)
+#define DB1550_BOTH_BANKS
+#elif defined(CONFIG_MTD_DB1550_BOOT) && !defined(CONFIG_MTD_DB1550_USER)
+#define DB1550_BOOT_ONLY
+#elif !defined(CONFIG_MTD_DB1550_BOOT) && defined(CONFIG_MTD_DB1550_USER)
+#define DB1550_USER_ONLY
+#endif
+
+#ifdef DB1550_BOTH_BANKS
+/* both banks will be used. Combine the first bank and the first
+ * part of the second bank together into a single jffs/jffs2
+ * partition.
+ */
+static struct mtd_partition db1550_partitions[] = {
+ /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
+ * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash
+ * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash
+ */
+ {
+ .name = "User FS",
+ .size = (0x1FC00000 - 0x18000000),
+ .offset = 0x0000000
+ },{
+ .name = "yamon",
+ .size = 0x0100000,
+ .offset = MTDPART_OFS_APPEND,
+ .mask_flags = MTD_WRITEABLE
+ },{
+ .name = "raw kernel",
+ .size = (0x300000 - 0x40000), /* last 256KB is yamon env */
+ .offset = MTDPART_OFS_APPEND,
+ }
+};
+#elif defined(DB1550_BOOT_ONLY)
+static struct mtd_partition db1550_partitions[] = {
+ /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
+ * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash
+ */
+ {
+ .name = "User FS",
+ .size = 0x03c00000,
+ .offset = 0x0000000
+ },{
+ .name = "yamon",
+ .size = 0x0100000,
+ .offset = MTDPART_OFS_APPEND,
+ .mask_flags = MTD_WRITEABLE
+ },{
+ .name = "raw kernel",
+ .size = (0x300000-0x40000), /* last 256KB is yamon env */
+ .offset = MTDPART_OFS_APPEND,
+ }
+};
+#elif defined(DB1550_USER_ONLY)
+static struct mtd_partition db1550_partitions[] = {
+ /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
+ * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash
+ */
+ {
+ .name = "User FS",
+ .size = (0x4000000 - 0x200000), /* reserve 2MB for raw kernel */
+ .offset = 0x0000000
+ },{
+ .name = "raw kernel",
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND,
+ }
+};
+#else
+#error MTD_DB1550 define combo error /* should never happen */
+#endif
+
+#define NB_OF(x) (sizeof(x)/sizeof(x[0]))
+
+static struct mtd_info *mymtd;
+
+/*
+ * Probe the flash density and setup window address and size
+ * based on user CONFIG options. There are times when we don't
+ * want the MTD driver to be probing the boot or user flash,
+ * so having the option to enable only one bank is important.
+ */
+int setup_flash_params(void)
+{
+#if defined(DB1550_BOTH_BANKS)
+ window_addr = 0x18000000;
+ window_size = 0x8000000;
+#elif defined(DB1550_BOOT_ONLY)
+ window_addr = 0x1C000000;
+ window_size = 0x4000000;
+#else /* USER ONLY */
+ window_addr = 0x18000000;
+ window_size = 0x4000000;
+#endif
+ return 0;
+}
+
+int __init db1550_mtd_init(void)
+{
+ struct mtd_partition *parts;
+ int nb_parts = 0;
+
+ /* Default flash bankwidth */
+ db1550_map.bankwidth = flash_bankwidth;
+
+ if (setup_flash_params())
+ return -ENXIO;
+
+ /*
+ * Static partition definition selection
+ */
+ parts = db1550_partitions;
+ nb_parts = NB_OF(db1550_partitions);
+ db1550_map.size = window_size;
+
+ /*
+ * Now let's probe for the actual flash. Do it here since
+ * specific machine settings might have been set above.
+ */
+ printk(KERN_NOTICE "Db1550 flash: probing %d-bit flash bus\n",
+ db1550_map.bankwidth*8);
+ db1550_map.virt = ioremap(window_addr, window_size);
+ mymtd = do_map_probe("cfi_probe", &db1550_map);
+ if (!mymtd) return -ENXIO;
+ mymtd->owner = THIS_MODULE;
+
+ add_mtd_partitions(mymtd, parts, nb_parts);
+ return 0;
+}
+
+static void __exit db1550_mtd_cleanup(void)
+{
+ if (mymtd) {
+ del_mtd_partitions(mymtd);
+ map_destroy(mymtd);
+ iounmap((void *) db1550_map.virt);
+ }
+}
+
+module_init(db1550_mtd_init);
+module_exit(db1550_mtd_cleanup);
+
+MODULE_AUTHOR("Embedded Edge, LLC");
+MODULE_DESCRIPTION("Db1550 mtd map driver");
+MODULE_LICENSE("GPL");