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/db1x00-flash.c b/drivers/mtd/maps/db1x00-flash.c
new file mode 100644
index 0000000..faa68ec
--- /dev/null
+++ b/drivers/mtd/maps/db1x00-flash.c
@@ -0,0 +1,226 @@
+/*
+ * Flash memory access on Alchemy Db1xxx boards
+ *
+ * $Id: db1x00-flash.c,v 1.6 2004/11/04 13:24:14 gleixner Exp $
+ *
+ * (C) 2003 Pete Popov <ppopov@embeddedalley.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.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
+
+/* MTD CONFIG OPTIONS */
+#if defined(CONFIG_MTD_DB1X00_BOOT) && defined(CONFIG_MTD_DB1X00_USER)
+#define DB1X00_BOTH_BANKS
+#elif defined(CONFIG_MTD_DB1X00_BOOT) && !defined(CONFIG_MTD_DB1X00_USER)
+#define DB1X00_BOOT_ONLY
+#elif !defined(CONFIG_MTD_DB1X00_BOOT) && defined(CONFIG_MTD_DB1X00_USER)
+#define DB1X00_USER_ONLY
+#endif
+
+static unsigned long window_addr;
+static unsigned long window_size;
+static unsigned long flash_size;
+
+static unsigned short *bcsr = (unsigned short *)0xAE000000;
+static unsigned char flash_bankwidth = 4;
+
+/*
+ * The Db1x boards support different flash densities. We setup
+ * the mtd_partition structures below for default of 64Mbit
+ * flash densities, and override the partitions sizes, if
+ * necessary, after we check the board status register.
+ */
+
+#ifdef DB1X00_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 db1x00_partitions[] = {
+ {
+ .name = "User FS",
+ .size = 0x1c00000,
+ .offset = 0x0000000
+ },{
+ .name = "yamon",
+ .size = 0x0100000,
+ .offset = MTDPART_OFS_APPEND,
+ .mask_flags = MTD_WRITEABLE
+ },{
+ .name = "raw kernel",
+ .size = (0x300000-0x40000), /* last 256KB is env */
+ .offset = MTDPART_OFS_APPEND,
+ }
+};
+#elif defined(DB1X00_BOOT_ONLY)
+static struct mtd_partition db1x00_partitions[] = {
+ {
+ .name = "User FS",
+ .size = 0x00c00000,
+ .offset = 0x0000000
+ },{
+ .name = "yamon",
+ .size = 0x0100000,
+ .offset = MTDPART_OFS_APPEND,
+ .mask_flags = MTD_WRITEABLE
+ },{
+ .name = "raw kernel",
+ .size = (0x300000-0x40000), /* last 256KB is env */
+ .offset = MTDPART_OFS_APPEND,
+ }
+};
+#elif defined(DB1X00_USER_ONLY)
+static struct mtd_partition db1x00_partitions[] = {
+ {
+ .name = "User FS",
+ .size = 0x0e00000,
+ .offset = 0x0000000
+ },{
+ .name = "raw kernel",
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND,
+ }
+};
+#else
+#error MTD_DB1X00 define combo error /* should never happen */
+#endif
+#define NB_OF(x) (sizeof(x)/sizeof(x[0]))
+
+#define NAME "Db1x00 Linux Flash"
+
+static struct map_info db1xxx_mtd_map = {
+ .name = NAME,
+};
+
+static struct mtd_partition *parsed_parts;
+static struct mtd_info *db1xxx_mtd;
+
+/*
+ * 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)
+{
+ switch ((bcsr[2] >> 14) & 0x3) {
+ case 0: /* 64Mbit devices */
+ flash_size = 0x800000; /* 8MB per part */
+#if defined(DB1X00_BOTH_BANKS)
+ window_addr = 0x1E000000;
+ window_size = 0x2000000;
+#elif defined(DB1X00_BOOT_ONLY)
+ window_addr = 0x1F000000;
+ window_size = 0x1000000;
+#else /* USER ONLY */
+ window_addr = 0x1E000000;
+ window_size = 0x1000000;
+#endif
+ break;
+ case 1:
+ /* 128 Mbit devices */
+ flash_size = 0x1000000; /* 16MB per part */
+#if defined(DB1X00_BOTH_BANKS)
+ window_addr = 0x1C000000;
+ window_size = 0x4000000;
+ /* USERFS from 0x1C00 0000 to 0x1FC0 0000 */
+ db1x00_partitions[0].size = 0x3C00000;
+#elif defined(DB1X00_BOOT_ONLY)
+ window_addr = 0x1E000000;
+ window_size = 0x2000000;
+ /* USERFS from 0x1E00 0000 to 0x1FC0 0000 */
+ db1x00_partitions[0].size = 0x1C00000;
+#else /* USER ONLY */
+ window_addr = 0x1C000000;
+ window_size = 0x2000000;
+ /* USERFS from 0x1C00 0000 to 0x1DE00000 */
+ db1x00_partitions[0].size = 0x1DE0000;
+#endif
+ break;
+ case 2:
+ /* 256 Mbit devices */
+ flash_size = 0x4000000; /* 64MB per part */
+#if defined(DB1X00_BOTH_BANKS)
+ return 1;
+#elif defined(DB1X00_BOOT_ONLY)
+ /* Boot ROM flash bank only; no user bank */
+ window_addr = 0x1C000000;
+ window_size = 0x4000000;
+ /* USERFS from 0x1C00 0000 to 0x1FC00000 */
+ db1x00_partitions[0].size = 0x3C00000;
+#else /* USER ONLY */
+ return 1;
+#endif
+ break;
+ default:
+ return 1;
+ }
+ db1xxx_mtd_map.size = window_size;
+ db1xxx_mtd_map.bankwidth = flash_bankwidth;
+ db1xxx_mtd_map.phys = window_addr;
+ db1xxx_mtd_map.bankwidth = flash_bankwidth;
+ return 0;
+}
+
+int __init db1x00_mtd_init(void)
+{
+ struct mtd_partition *parts;
+ int nb_parts = 0;
+
+ if (setup_flash_params())
+ return -ENXIO;
+
+ /*
+ * Static partition definition selection
+ */
+ parts = db1x00_partitions;
+ nb_parts = NB_OF(db1x00_partitions);
+
+ /*
+ * Now let's probe for the actual flash. Do it here since
+ * specific machine settings might have been set above.
+ */
+ printk(KERN_NOTICE "Db1xxx flash: probing %d-bit flash bus\n",
+ db1xxx_mtd_map.bankwidth*8);
+ db1xxx_mtd_map.virt = ioremap(window_addr, window_size);
+ db1xxx_mtd = do_map_probe("cfi_probe", &db1xxx_mtd_map);
+ if (!db1xxx_mtd) return -ENXIO;
+ db1xxx_mtd->owner = THIS_MODULE;
+
+ add_mtd_partitions(db1xxx_mtd, parts, nb_parts);
+ return 0;
+}
+
+static void __exit db1x00_mtd_cleanup(void)
+{
+ if (db1xxx_mtd) {
+ del_mtd_partitions(db1xxx_mtd);
+ map_destroy(db1xxx_mtd);
+ if (parsed_parts)
+ kfree(parsed_parts);
+ }
+}
+
+module_init(db1x00_mtd_init);
+module_exit(db1x00_mtd_cleanup);
+
+MODULE_AUTHOR("Pete Popov");
+MODULE_DESCRIPTION("Db1x00 mtd map driver");
+MODULE_LICENSE("GPL");