Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 247 insertions, 0 deletions

diff --git a/drivers/mtd/maps/sbc8240.c b/drivers/mtd/maps/sbc8240.c
new file mode 100644
index 00000000000..da684d3384e
--- /dev/null
+++ b/drivers/mtd/maps/sbc8240.c
@@ -0,0 +1,247 @@
+/*
+ * Handle mapping of the flash memory access routines on the SBC8240 board.
+ *
+ * Carolyn Smith, Tektronix, Inc.
+ *
+ * This code is GPLed
+ *
+ * $Id: sbc8240.c,v 1.4 2004/07/12 22:38:29 dwmw2 Exp $
+ *
+ */
+
+/*
+ * The SBC8240 has 2 flash banks.
+ * Bank 0 is a 512 KiB AMD AM29F040B; 8 x 64 KiB sectors.
+ * It contains the U-Boot code (7 sectors) and the environment (1 sector).
+ * Bank 1 is 4 x 1 MiB AMD AM29LV800BT; 15 x 64 KiB sectors, 1 x 32 KiB sector,
+ * 2 x 8 KiB sectors, 1 x 16 KiB sectors.
+ * Both parts are JEDEC compatible.
+ */
+
+#include <linux/config.h>
+#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/cfi.h>
+
+#ifdef CONFIG_MTD_PARTITIONS
+#include <linux/mtd/partitions.h>
+#endif
+
+#define	DEBUG
+
+#ifdef	DEBUG
+# define debugk(fmt,args...)	printk(fmt ,##args)
+#else
+# define debugk(fmt,args...)
+#endif
+
+
+#define WINDOW_ADDR0	0xFFF00000		/* 512 KiB */
+#define WINDOW_SIZE0	0x00080000
+#define BUSWIDTH0	1
+
+#define WINDOW_ADDR1	0xFF000000		/* 4 MiB */
+#define WINDOW_SIZE1	0x00400000
+#define BUSWIDTH1	8
+
+#define MSG_PREFIX "sbc8240:"	/* prefix for our printk()'s */
+#define MTDID	   "sbc8240-%d"	/* for mtdparts= partitioning */
+
+
+static struct map_info sbc8240_map[2] = {
+	{
+		.name           = "sbc8240 Flash Bank #0",
+		.size           = WINDOW_SIZE0,
+		.bankwidth       = BUSWIDTH0,
+	},
+	{
+		.name           = "sbc8240 Flash Bank #1",
+		.size           = WINDOW_SIZE1,
+		.bankwidth       = BUSWIDTH1,
+	}
+};
+
+#define NUM_FLASH_BANKS	(sizeof(sbc8240_map) / sizeof(struct map_info))
+
+/*
+ * The following defines the partition layout of SBC8240 boards.
+ *
+ * See include/linux/mtd/partitions.h for definition of the
+ * mtd_partition structure.
+ *
+ * The *_max_flash_size is the maximum possible mapped flash size
+ * which is not necessarily the actual flash size. It must correspond
+ * to the value specified in the mapping definition defined by the
+ * "struct map_desc *_io_desc" for the corresponding machine.
+ */
+
+#ifdef CONFIG_MTD_PARTITIONS
+
+static struct mtd_partition sbc8240_uboot_partitions [] = {
+	/* Bank 0 */
+	{
+		.name =	"U-boot",			/* U-Boot Firmware	*/
+		.offset =	0,
+		.size =	0x00070000,			/*  7 x 64 KiB sectors 	*/
+		.mask_flags = MTD_WRITEABLE,		/*  force read-only	*/
+	},
+	{
+		.name =	"environment",			/* U-Boot environment	*/
+		.offset =	0x00070000,
+		.size =	0x00010000,			/*  1 x 64 KiB sector	*/
+	},
+};
+
+static struct mtd_partition sbc8240_fs_partitions [] = {
+	{
+		.name =	"jffs",				/* JFFS  filesystem	*/
+		.offset =	0,
+		.size =	0x003C0000,			/*  4 * 15 * 64KiB	*/
+	},
+	{
+		.name =	"tmp32",
+		.offset =	0x003C0000,
+		.size =	0x00020000,			/*  4 * 32KiB		*/
+	},
+	{
+		.name =	"tmp8a",
+		.offset =	0x003E0000,
+		.size =	0x00008000,			/*  4 * 8KiB		*/
+	},
+	{
+		.name =	"tmp8b",
+		.offset =	0x003E8000,
+		.size =	0x00008000,			/*  4 * 8KiB		*/
+	},
+	{
+		.name =	"tmp16",
+		.offset =	0x003F0000,
+		.size =	0x00010000,			/*  4 * 16KiB		*/
+	}
+};
+
+#define NB_OF(x) (sizeof (x) / sizeof (x[0]))
+
+/* trivial struct to describe partition information */
+struct mtd_part_def
+{
+	int nums;
+	unsigned char *type;
+	struct mtd_partition* mtd_part;
+};
+
+static struct mtd_info *sbc8240_mtd[NUM_FLASH_BANKS];
+static struct mtd_part_def sbc8240_part_banks[NUM_FLASH_BANKS];
+
+
+#endif	/* CONFIG_MTD_PARTITIONS */
+
+
+int __init init_sbc8240_mtd (void)
+{
+	static struct _cjs {
+		u_long addr;
+		u_long size;
+	} pt[NUM_FLASH_BANKS] = {
+		{
+			.addr = WINDOW_ADDR0,
+			.size = WINDOW_SIZE0
+		},
+		{
+			.addr = WINDOW_ADDR1,
+			.size = WINDOW_SIZE1
+		},
+	};
+
+	int devicesfound = 0;
+	int i;
+
+	for (i = 0; i < NUM_FLASH_BANKS; i++) {
+		printk (KERN_NOTICE MSG_PREFIX
+			"Probing 0x%08lx at 0x%08lx\n", pt[i].size, pt[i].addr);
+
+		sbc8240_map[i].map_priv_1 =
+			(unsigned long) ioremap (pt[i].addr, pt[i].size);
+		if (!sbc8240_map[i].map_priv_1) {
+			printk (MSG_PREFIX "failed to ioremap\n");
+			return -EIO;
+		}
+		simple_map_init(&sbc8240_mtd[i]);
+
+		sbc8240_mtd[i] = do_map_probe("jedec_probe", &sbc8240_map[i]);
+
+		if (sbc8240_mtd[i]) {
+			sbc8240_mtd[i]->module = THIS_MODULE;
+			devicesfound++;
+		}
+	}
+
+	if (!devicesfound) {
+		printk(KERN_NOTICE MSG_PREFIX
+		       "No suppported flash chips found!\n");
+		return -ENXIO;
+	}
+
+#ifdef CONFIG_MTD_PARTITIONS
+	sbc8240_part_banks[0].mtd_part   = sbc8240_uboot_partitions;
+	sbc8240_part_banks[0].type       = "static image";
+	sbc8240_part_banks[0].nums       = NB_OF(sbc8240_uboot_partitions);
+	sbc8240_part_banks[1].mtd_part   = sbc8240_fs_partitions;
+	sbc8240_part_banks[1].type       = "static file system";
+	sbc8240_part_banks[1].nums       = NB_OF(sbc8240_fs_partitions);
+
+	for (i = 0; i < NUM_FLASH_BANKS; i++) {
+
+		if (!sbc8240_mtd[i]) continue;
+		if (sbc8240_part_banks[i].nums == 0) {
+			printk (KERN_NOTICE MSG_PREFIX
+				"No partition info available, registering whole device\n");
+			add_mtd_device(sbc8240_mtd[i]);
+		} else {
+			printk (KERN_NOTICE MSG_PREFIX
+				"Using %s partition definition\n", sbc8240_part_banks[i].mtd_part->name);
+			add_mtd_partitions (sbc8240_mtd[i], 
+					    sbc8240_part_banks[i].mtd_part,
+					    sbc8240_part_banks[i].nums);
+		}
+	}
+#else
+	printk(KERN_NOTICE MSG_PREFIX
+	       "Registering %d flash banks at once\n", devicesfound);
+
+	for (i = 0; i < devicesfound; i++) {
+		add_mtd_device(sbc8240_mtd[i]);
+	}
+#endif	/* CONFIG_MTD_PARTITIONS */
+
+	return devicesfound == 0 ? -ENXIO : 0;
+}
+
+static void __exit cleanup_sbc8240_mtd (void)
+{
+	int i;
+
+	for (i = 0; i < NUM_FLASH_BANKS; i++) {
+		if (sbc8240_mtd[i]) {
+			del_mtd_device (sbc8240_mtd[i]);
+			map_destroy (sbc8240_mtd[i]);
+		}
+		if (sbc8240_map[i].map_priv_1) {
+			iounmap ((void *) sbc8240_map[i].map_priv_1);
+			sbc8240_map[i].map_priv_1 = 0;
+		}
+	}
+}
+
+module_init (init_sbc8240_mtd);
+module_exit (cleanup_sbc8240_mtd);
+
+MODULE_LICENSE ("GPL");
+MODULE_AUTHOR ("Carolyn Smith <carolyn.smith@tektronix.com>");
+MODULE_DESCRIPTION ("MTD map driver for SBC8240 boards");
+