patch-2.4.6 linux/drivers/mtd/maps/sa1100-flash.c

• Lines: 645
• Date: Tue Jun 12 10:30:27 2001
• Orig file: v2.4.5/linux/drivers/mtd/maps/sa1100-flash.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/drivers/mtd/maps/sa1100-flash.c linux/drivers/mtd/maps/sa1100-flash.c
@@ -0,0 +1,644 @@
+/*
+ * Flash memory access on SA11x0 based devices
+ * 
+ * (C) 2000 Nicolas Pitre <nico@cam.org>
+ * 
+ * $Id: sa1100-flash.c,v 1.15 2001/06/02 18:29:22 nico Exp $
+ */
+
+#include <linux/config.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/hardware.h>
+
+
+#ifndef CONFIG_ARCH_SA1100
+#error This is for SA1100 architecture only
+#endif
+
+
+#define WINDOW_ADDR 0xe8000000
+
+static __u8 sa1100_read8(struct map_info *map, unsigned long ofs)
+{
+	return *(__u8 *)(WINDOW_ADDR + ofs);
+}
+
+static __u16 sa1100_read16(struct map_info *map, unsigned long ofs)
+{
+	return *(__u16 *)(WINDOW_ADDR + ofs);
+}
+
+static __u32 sa1100_read32(struct map_info *map, unsigned long ofs)
+{
+	return *(__u32 *)(WINDOW_ADDR + ofs);
+}
+
+static void sa1100_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+	memcpy(to, (void *)(WINDOW_ADDR + from), len);
+}
+
+static void sa1100_write8(struct map_info *map, __u8 d, unsigned long adr)
+{
+	*(__u8 *)(WINDOW_ADDR + adr) = d;
+}
+
+static void sa1100_write16(struct map_info *map, __u16 d, unsigned long adr)
+{
+	*(__u16 *)(WINDOW_ADDR + adr) = d;
+}
+
+static void sa1100_write32(struct map_info *map, __u32 d, unsigned long adr)
+{
+	*(__u32 *)(WINDOW_ADDR + adr) = d;
+}
+
+static void sa1100_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
+{
+	memcpy((void *)(WINDOW_ADDR + to), from, len);
+}
+
+
+#ifdef CONFIG_SA1100_BITSY
+
+static void bitsy_set_vpp(struct map_info *map, int vpp)
+{
+	if (vpp)
+		set_bitsy_egpio(EGPIO_BITSY_VPP_ON);
+	else
+		clr_bitsy_egpio(EGPIO_BITSY_VPP_ON);
+}
+
+#endif
+
+#ifdef CONFIG_SA1100_JORNADA720
+
+static void jornada720_set_vpp(int vpp)
+{
+  if (vpp)
+      PPSR |= 0x80;
+  else
+      PPSR &= ~0x80;
+  PPDR |= 0x80;
+}
+
+#endif
+
+static struct map_info sa1100_map = {
+	name:		"SA1100 flash",
+	read8:		sa1100_read8,
+	read16:		sa1100_read16,
+	read32:		sa1100_read32,
+	copy_from:	sa1100_copy_from,
+	write8:		sa1100_write8,
+	write16:	sa1100_write16,
+	write32:	sa1100_write32,
+	copy_to:	sa1100_copy_to
+};
+
+
+/*
+ * Here are partition information for all known SA1100-based devices.
+ * 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_SA1100_ASSABET
+
+/* Phase 4 Assabet has two 28F160B3 flash parts in bank 0: */
+static unsigned long assabet4_max_flash_size = 0x00400000;
+static struct mtd_partition assabet4_partitions[] = {
+        {
+                name: "bootloader",
+                size: 0x00020000,
+                offset: 0,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "bootloader params",
+                size: 0x00020000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "jffs",
+                size: MTDPART_SIZ_FULL,
+                offset: MTDPART_OFS_APPEND
+        }
+};
+
+/* Phase 5 Assabet has two 28F128J3A flash parts in bank 0: */
+static unsigned long assabet5_max_flash_size = 0x02000000;
+static struct mtd_partition assabet5_partitions[] = {
+        {
+                name: "bootloader",
+                size: 0x00040000,
+                offset: 0,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "bootloader params",
+                size: 0x00040000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "jffs",
+                size: MTDPART_SIZ_FULL,
+                offset: MTDPART_OFS_APPEND
+        }
+};
+
+#define assabet_max_flash_size assabet5_max_flash_size
+#define assabet_partitions     assabet5_partitions
+
+#endif
+
+#ifdef CONFIG_SA1100_FLEXANET
+
+/* Flexanet has two 28F128J3A flash parts in bank 0: */
+static unsigned long flexanet_max_flash_size = 0x02000000;
+static struct mtd_partition flexanet_partitions[] = {
+        {
+                name: "bootloader",
+                size: 0x00040000,
+                offset: 0,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "bootloader params",
+                size: 0x00040000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "kernel",
+                size: 0x000C0000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "altkernel",
+                size: 0x000C0000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "root",
+                size: 0x00400000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "free1",
+                size: 0x00300000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "free2",
+                size: 0x00300000,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        },{
+                name: "free3",
+                size: MTDPART_SIZ_FULL,
+                offset: MTDPART_OFS_APPEND,
+                mask_flags: MTD_WRITEABLE
+        }
+};
+
+#endif
+
+#ifdef CONFIG_SA1100_HUW_WEBPANEL
+static unsigned long huw_webpanel_max_flash_size = 0x01000000;
+static struct mtd_partition huw_webpanel_partitions[] = {
+	{ 
+	  name: "Loader",
+	  size: 0x00040000,
+	  offset: 0,
+	},{
+	  name: "Sector 1",
+	  size: 0x00040000,
+	  offset: MTDPART_OFS_APPEND,
+	},{
+	  size: MTDPART_SIZ_FULL,
+	  offset: MTDPART_OFS_APPEND,
+	}
+};
+#endif /* CONFIG_SA1100_HUW_WEBPANEL */
+
+
+#ifdef CONFIG_SA1100_BITSY
+
+static unsigned long bitsy_max_flash_size = 0x02000000;
+static struct mtd_partition bitsy_partitions[] = {
+	{
+		name: "BITSY boot firmware",
+		size: 0x00040000,
+		offset: 0,
+		mask_flags: MTD_WRITEABLE  /* force read-only */
+	},{
+		name: "BITSY kernel",
+		size: 0x00080000,
+		offset: 0x40000
+	},{
+		name: "BITSY params",
+		size: 0x00040000,
+		offset: 0xC0000
+	},{
+#ifdef CONFIG_JFFS2_FS
+		name: "BITSY root jffs2",
+		offset: 0x00100000,
+		size: MTDPART_SIZ_FULL
+#else
+		name: "BITSY initrd",
+		size: 0x00100000,
+		offset: 0x00100000
+	},{
+		name: "BITSY root cramfs",
+		size: 0x00300000,
+		offset: 0x00200000
+	},{
+		name: "BITSY usr cramfs",
+		size: 0x00800000,
+		offset: 0x00500000
+	},{
+		name: "BITSY usr local",
+		offset: 0x00d00000,
+		size: MTDPART_SIZ_FULL
+#endif
+	}
+};
+
+#endif
+#ifdef CONFIG_SA1100_FREEBIRD
+static unsigned long freebird_max_flash_size = 0x02000000;
+static struct mtd_partition freebird_partitions[] = {
+#if CONFIG_SA1100_FREEBIRD_NEW
+    {
+     name: "firmware",
+     size: 0x00040000,
+     offset: 0,
+     mask_flags: MTD_WRITEABLE  /* force read-only */
+    },{
+     name: "kernel",
+     size: 0x00080000,
+     offset: 0x40000
+    },{
+     name: "params",
+     size: 0x00040000,
+     offset: 0xC0000
+    },{
+     name: "initrd",
+     size: 0x00100000,
+     offset: 0x00100000
+    },{
+     name: "root cramfs",
+     size: 0x00300000,
+     offset: 0x00200000
+    },{
+     name: "usr cramfs",
+     size: 0x00C00000,
+     offset: 0x00500000
+    },{
+	 name: "local",
+	 offset: 0x01100000,
+	 size: MTDPART_SIZ_FULL 
+	}
+#else
+	{ offset: 0,            		size: 0x00040000,   },
+	{ offset: MTDPART_OFS_APPEND,   size: 0x000c0000,   },
+	{ offset: MTDPART_OFS_APPEND,	size: 0x00400000,	},
+	{ offset: MTDPART_OFS_APPEND,   size: MTDPART_SIZ_FULL  }
+#endif
+	};
+#endif
+																									
+
+#ifdef CONFIG_SA1100_CERF
+
+static unsigned long cerf_max_flash_size = 0x01000000;
+static struct mtd_partition cerf_partitions[] = {
+	{ offset: 0,			size: 0x00800000 	},
+	{ offset: MTDPART_OFS_APPEND,	size: 0x00800000 	}
+};
+
+#endif
+
+#ifdef CONFIG_SA1100_GRAPHICSCLIENT
+
+static unsigned long graphicsclient_max_flash_size = 0x01000000;
+static struct mtd_partition graphicsclient_partitions[] = {
+	{ 
+	 name: "Bootloader + zImage",
+	 offset: 0,
+	 size: 0x100000
+	},
+	{ 
+         name: "ramdisk.gz",
+         offset: MTDPART_OFS_APPEND,
+         size: 0x300000 		
+	},
+	{ 
+	  name: "User FS",
+          offset: MTDPART_OFS_APPEND,	
+          size: MTDPART_SIZ_FULL
+	}
+};
+
+#endif
+
+#ifdef CONFIG_SA1100_LART
+
+static unsigned long lart_max_flash_size = 0x00400000;
+static struct mtd_partition lart_partitions[] = {
+	{ offset: 0,			size: 0x020000 		},
+	{ offset: MTDPART_OFS_APPEND,	size: 0x0e0000 		},
+	{ offset: MTDPART_OFS_APPEND,	size: MTDPART_SIZ_FULL 	}
+};
+
+#endif
+
+#ifdef CONFIG_SA1100_PANGOLIN
+
+static unsigned long pangolin_max_flash_size = 0x04000000;
+static struct mtd_partition pangolin_partitions[] = {
+	{
+	  name: "boot firmware",
+	  offset: 0x00000000,
+	  size: 0x00080000,
+	  mask_flags: MTD_WRITEABLE,  /* force read-only */
+	},
+	{
+	  name: "kernel",
+	  offset: 0x00080000,
+	  size: 0x00100000,
+	},
+	{
+	  name: "initrd",
+	  offset: 0x00180000,
+	  size: 0x00200000,
+	},
+	{
+	  name: "initrd-test",
+	  offset: 0x00400000,
+	  size: 0x03C00000,
+	}
+};
+
+#endif
+
+#ifdef CONFIG_SA1100_YOPY
+
+static unsigned long yopy_max_flash_size = 0x08000000;
+static struct mtd_partition yopy_partitions[] = {
+	{
+		name: "boot firmware",
+		offset: 0x00000000,
+		size: 0x00040000,
+		mask_flags: MTD_WRITEABLE,  /* force read-only */
+	},
+	{
+		name: "kernel",
+		offset: 0x00080000,
+		size: 0x00080000,
+	},
+	{
+		name: "initrd",
+		offset: 0x00100000,
+		size: 0x00300000,
+	},
+	{
+		name: "root",
+		offset: 0x00400000,
+		size: 0x01000000,
+	},
+};
+
+#endif
+
+#ifdef CONFIG_SA1100_JORNADA720
+
+static unsigned long jornada720_max_flash_size = 0x02000000;
+static struct mtd_partition jornada720_partitions[] = {
+	{
+		name: "JORNADA720 boot firmware",
+		size: 0x00040000,
+		offset: 0,
+		mask_flags: MTD_WRITEABLE  /* force read-only */
+	},{
+		name: "JORNADA720 kernel",
+		size: 0x000c0000,
+		offset: 0x40000
+	},{
+		name: "JORNADA720 params",
+		size: 0x00040000,
+		offset: 0x100000
+	},{
+		name: "JORNADA720 initrd",
+		size: 0x00100000,
+		offset: 0x00140000
+	},{
+		name: "JORNADA720 root cramfs",
+		size: 0x00300000,
+		offset: 0x00240000
+	},{
+		name: "JORNADA720 usr cramfs",
+		size: 0x00800000,
+		offset: 0x00540000
+	},{
+		name: "JORNADA720 usr local",
+		offset: 0x00d00000,
+		size: 0  /* will expand to the end of the flash */
+	}
+};
+#endif
+
+#ifdef CONFIG_SA1100_SHERMAN
+
+static unsigned long sherman_max_flash_size = 0x02000000;
+static struct mtd_partition sherman_partitions[] = {
+	{ offset: 0,			size: 0x50000 	},
+	{ offset: MTDPART_OFS_APPEND,	size: 0x70000 	},
+	{ offset: MTDPART_OFS_APPEND,	size: 0x600000 	},
+	{ offset: MTDPART_OFS_APPEND,	size: 0xA0000 	}
+};
+
+#endif
+
+#define NB_OF(x)  (sizeof(x)/sizeof(x[0]))
+
+
+extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts);
+extern int parse_bootldr_partitions(struct mtd_info *master, struct mtd_partition **pparts);
+
+static struct mtd_partition *parsed_parts;
+static struct mtd_info *mymtd;
+
+int __init sa1100_mtd_init(void)
+{
+	struct mtd_partition *parts;
+	int nb_parts = 0;
+	int parsed_nr_parts = 0;
+	char *part_type;
+	
+	sa1100_map.buswidth = (MSC0 & MSC_RBW) ? 2 : 4;
+	printk(KERN_NOTICE "SA1100 flash: probing %d-bit flash bus\n", sa1100_map.buswidth*8);
+	mymtd = do_map_probe("cfi", &sa1100_map);
+	if (!mymtd)
+		return -ENXIO;
+	mymtd->module = THIS_MODULE;
+
+	/*
+	 * Static partition definition selection
+	 */
+	part_type = "static";
+#ifdef CONFIG_SA1100_ASSABET
+	if (machine_is_assabet()) {
+		parts = assabet_partitions;
+		nb_parts = NB_OF(assabet_partitions);
+		sa1100_map.size = assabet_max_flash_size;
+	}
+#endif
+
+#ifdef CONFIG_SA1100_HUW_WEBPANEL
+	if (machine_is_huw_webpanel()) {
+		parts = huw_webpanel_partitions;
+		nb_parts = NB_OF(huw_webpanel_partitions);
+		sa1100_map.size = huw_webpanel_max_flash_size;
+	}
+#endif
+
+#ifdef CONFIG_SA1100_BITSY
+	if (machine_is_bitsy()) {
+		parts = bitsy_partitions;
+		nb_parts = NB_OF(bitsy_partitions);
+		sa1100_map.size = bitsy_max_flash_size;
+		sa1100_map.set_vpp = bitsy_set_vpp;
+	}
+#endif
+#ifdef CONFIG_SA1100_FREEBIRD
+	if (machine_is_freebird()) {
+		parts = freebird_partitions;
+		nb_parts = NB_OF(freebird_partitions);
+		sa1100_map.size = freebird_max_flash_size;
+	}
+#endif
+#ifdef CONFIG_SA1100_CERF
+	if (machine_is_cerf()) {
+		parts = cerf_partitions;
+		nb_parts = NB_OF(cerf_partitions);
+		sa1100_map.size = cerf_max_flash_size;
+	}
+#endif
+#ifdef CONFIG_SA1100_GRAPHICSCLIENT
+	if (machine_is_graphicsclient()) {
+		parts = graphicsclient_partitions;
+		nb_parts = NB_OF(graphicsclient_partitions);
+		sa1100_map.size = graphicsclient_max_flash_size;
+	}
+#endif
+#ifdef CONFIG_SA1100_LART
+	if (machine_is_lart()) {
+		parts = lart_partitions;
+		nb_parts = NB_OF(lart_partitions);
+		sa1100_map.size = lart_max_flash_size;
+	}
+#endif
+#ifdef CONFIG_SA1100_PANGOLIN
+	if (machine_is_pangolin()) {
+		parts = pangolin_partitions;
+		nb_parts = NB_OF(pangolin_partitions);
+		sa1100_map.size = pangolin_max_flash_size;
+	}
+#endif
+#ifdef CONFIG_SA1100_JORNADA720
+	if (machine_is_jornada720()) {
+		parts = jornada720_partitions;
+		nb_parts = NB_OF(jornada720_partitions);
+		sa1100_map.size = jornada720_max_flash_size;
+		sa1100_map.set_vpp = jornada720_set_vpp;
+	}
+#endif
+#ifdef CONFIG_SA1100_YOPY
+	if (machine_is_yopy()) {
+		parts = yopy_partitions;
+		nb_parts = NB_OF(yopy_partitions);
+		sa1100_map.size = yopy_max_flash_size;
+	}
+#endif
+#ifdef CONFIG_SA1100_SHERMAN
+	if (machine_is_sherman()) {
+		parts = sherman_partitions;
+		nb_parts = NB_OF(sherman_partitions);
+		sa1100_map.size = sherman_max_flash_size;
+	}
+#endif
+#ifdef CONFIG_SA1100_FLEXANET
+	if (machine_is_flexanet()) {
+		parts = flexanet_partitions;
+		nb_parts = NB_OF(flexanet_partitions);
+		sa1100_map.size = flexanet_max_flash_size;
+	}
+#endif
+
+
+	if (!nb_parts) {
+		printk(KERN_WARNING "MTD: no known flash definition for this SA1100 machine\n");
+		return -ENXIO;
+	}
+
+
+	/*
+	 * Dynamic partition selection stuff (might override the static ones)
+	 */
+#ifdef CONFIG_MTD_SA1100_REDBOOT_PARTITIONS
+	if (parsed_nr_parts == 0) {
+		int ret = parse_redboot_partitions(mymtd, &parsed_parts);
+		
+		if (ret > 0) {
+			part_type = "RedBoot";
+			parsed_nr_parts = ret;
+		}
+	}
+#endif
+#ifdef CONFIG_MTD_SA1100_BOOTLDR_PARTITIONS
+	if (parsed_nr_parts == 0) {
+		int ret = parse_bootldr_partitions(mymtd, &parsed_parts);
+		if (ret > 0) {
+			part_type = "Compaq bootldr";
+			parsed_nr_parts = ret;
+		}
+	}
+#endif
+
+	if (parsed_nr_parts > 0) {
+		parts = parsed_parts;
+		nb_parts = parsed_nr_parts;
+	}
+
+	if (nb_parts == 0) {
+		printk(KERN_NOTICE "SA1100 flash: no partition info available, registering whole flash at once\n");
+		add_mtd_device(mymtd);
+	} else {
+		printk(KERN_NOTICE "Using %s partition definition\n", part_type);
+		add_mtd_partitions(mymtd, parts, nb_parts);
+	}
+	return 0;
+}
+
+static void __exit sa1100_mtd_cleanup(void)
+{
+	if (mymtd) {
+		del_mtd_partitions(mymtd);
+		map_destroy(mymtd);
+		if (parsed_parts)
+			kfree(parsed_parts);
+	}
+}
+
+module_init(sa1100_mtd_init);
+module_exit(sa1100_mtd_cleanup);