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, 227 insertions, 0 deletions

diff --git a/drivers/mtd/maps/bast-flash.c b/drivers/mtd/maps/bast-flash.c
new file mode 100644
index 000000000000..44de3a81b277
--- /dev/null
+++ b/drivers/mtd/maps/bast-flash.c
@@ -0,0 +1,227 @@
+/* linux/drivers/mtd/maps/bast_flash.c
+ *
+ * Copyright (c) 2004 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Simtec Bast (EB2410ITX) NOR MTD Mapping driver
+ *
+ * Changelog:
+ *	20-Sep-2004  BJD  Initial version
+ *
+ * $Id: bast-flash.c,v 1.1 2004/09/21 14:29:04 bjd Exp $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/mach/flash.h>
+
+#include <asm/arch/map.h>
+#include <asm/arch/bast-map.h>
+#include <asm/arch/bast-cpld.h>
+
+#ifdef CONFIG_MTD_BAST_MAXSIZE
+#define AREA_MAXSIZE (CONFIG_MTD_BAST_MAXSIZE * (1024*1024))
+#else
+#define AREA_MAXSIZE (32*1024*1024)
+#endif
+
+#define PFX "bast-flash: "
+
+struct bast_flash_info {
+	struct mtd_info		*mtd;
+	struct map_info		 map;
+	struct mtd_partition	*partitions;
+	struct resource		*area;
+};
+
+static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
+
+static struct bast_flash_info *to_bast_info(struct device *dev)
+{
+	return (struct bast_flash_info *)dev_get_drvdata(dev);
+}
+
+static void bast_flash_setrw(int to)
+{
+	unsigned int val;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	val = __raw_readb(BAST_VA_CTRL3);
+	
+	if (to)
+		val |= BAST_CPLD_CTRL3_ROMWEN;
+	else
+		val &= ~BAST_CPLD_CTRL3_ROMWEN;
+
+	pr_debug("new cpld ctrl3=%02x\n", val);
+
+	__raw_writeb(val, BAST_VA_CTRL3);
+	local_irq_restore(flags);
+}
+
+static int bast_flash_remove(struct device *dev)
+{
+	struct bast_flash_info *info = to_bast_info(dev);
+
+	dev_set_drvdata(dev, NULL);
+
+	if (info == NULL) 
+		return 0;
+
+	if (info->map.virt != NULL)
+		iounmap(info->map.virt);
+
+	if (info->mtd) {
+		del_mtd_partitions(info->mtd);
+		map_destroy(info->mtd);
+	}
+
+	if (info->partitions)
+		kfree(info->partitions);
+
+	if (info->area) {
+		release_resource(info->area);
+		kfree(info->area);
+	}
+	
+	kfree(info);
+
+	return 0;
+}
+
+static int bast_flash_probe(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct bast_flash_info *info;
+	struct resource *res;
+	int err = 0;
+
+	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	if (info == NULL) {
+		printk(KERN_ERR PFX "no memory for flash info\n");
+		err = -ENOMEM;
+		goto exit_error;
+	}
+
+	memzero(info, sizeof(*info));
+	dev_set_drvdata(dev, info);
+
+	res = pdev->resource;  /* assume that the flash has one resource */
+
+	info->map.phys = res->start;
+	info->map.size = res->end - res->start + 1;
+	info->map.name = dev->bus_id;	
+	info->map.bankwidth = 2;
+	
+	if (info->map.size > AREA_MAXSIZE)
+		info->map.size = AREA_MAXSIZE;
+
+	pr_debug("%s: area %08lx, size %ld\n", __FUNCTION__,
+		 info->map.phys, info->map.size);
+	
+	info->area = request_mem_region(res->start, info->map.size,
+					pdev->name);
+	if (info->area == NULL) {
+		printk(KERN_ERR PFX "cannot reserve flash memory region\n");
+		err = -ENOENT;
+		goto exit_error;
+	}
+
+	info->map.virt = ioremap(res->start, info->map.size);
+	pr_debug("%s: virt at %08x\n", __FUNCTION__, (int)info->map.virt);
+
+	if (info->map.virt == 0) {
+		printk(KERN_ERR PFX "failed to ioremap() region\n");
+		err = -EIO;
+		goto exit_error;
+	}
+ 
+	simple_map_init(&info->map);
+
+	/* enable the write to the flash area */
+
+	bast_flash_setrw(1);
+
+	/* probe for the device(s) */
+
+	info->mtd = do_map_probe("jedec_probe", &info->map);
+	if (info->mtd == NULL)
+		info->mtd = do_map_probe("cfi_probe", &info->map);
+
+	if (info->mtd == NULL) {
+		printk(KERN_ERR PFX "map_probe() failed\n");
+		err = -ENXIO;
+		goto exit_error;
+	}
+
+	/* mark ourselves as the owner */
+	info->mtd->owner = THIS_MODULE;
+
+	err = parse_mtd_partitions(info->mtd, probes, &info->partitions, 0);
+	if (err > 0) {
+		err = add_mtd_partitions(info->mtd, info->partitions, err);
+		if (err) 
+			printk(KERN_ERR PFX "cannot add/parse partitions\n");
+	}
+
+	if (err == 0)
+		return 0;
+
+	/* fall through to exit error */
+
+ exit_error:
+	bast_flash_remove(dev);
+	return err;
+}
+
+static struct device_driver bast_flash_driver = {
+	.name		= "bast-nor",
+	.bus		= &platform_bus_type,
+	.probe		= bast_flash_probe,
+	.remove		= bast_flash_remove,
+};
+
+static int __init bast_flash_init(void)
+{
+	printk("BAST NOR-Flash Driver, (c) 2004 Simtec Electronics\n");
+	return driver_register(&bast_flash_driver);
+}
+
+static void __exit bast_flash_exit(void)
+{
+	driver_unregister(&bast_flash_driver);
+}
+
+module_init(bast_flash_init);
+module_exit(bast_flash_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_DESCRIPTION("BAST MTD Map driver");