diff options
Diffstat (limited to 'arch/cris/arch-v10/drivers')
| -rw-r--r-- | arch/cris/arch-v10/drivers/axisflashmap.c | 181 |
1 files changed, 37 insertions, 144 deletions
diff --git a/arch/cris/arch-v10/drivers/axisflashmap.c b/arch/cris/arch-v10/drivers/axisflashmap.c index ea3cf2e39a1..b3bdda93ffe 100644 --- a/arch/cris/arch-v10/drivers/axisflashmap.c +++ b/arch/cris/arch-v10/drivers/axisflashmap.c @@ -10,129 +10,6 @@ * tells us what other partitions to define. If there isn't, we use a default * partition split defined below. * - * $Log: axisflashmap.c,v $ - * Revision 1.11 2004/11/15 10:27:14 starvik - * Corrected typo (Thanks to Milton Miller <miltonm@bga.com>). - * - * Revision 1.10 2004/08/16 12:37:22 starvik - * Merge of Linux 2.6.8 - * - * Revision 1.8 2004/05/14 07:58:03 starvik - * Merge of changes from 2.4 - * - * Revision 1.6 2003/07/04 08:27:37 starvik - * Merge of Linux 2.5.74 - * - * Revision 1.5 2002/12/11 13:13:57 starvik - * Added arch/ to v10 specific includes - * Added fix from Linux 2.4 in serial.c (flush_to_flip_buffer) - * - * Revision 1.4 2002/11/20 11:56:10 starvik - * Merge of Linux 2.5.48 - * - * Revision 1.3 2002/11/13 14:54:13 starvik - * Copied from linux 2.4 - * - * Revision 1.28 2002/10/01 08:08:43 jonashg - * The first partition ends at the start of the partition table. - * - * Revision 1.27 2002/08/21 09:23:13 jonashg - * Speling. - * - * Revision 1.26 2002/08/21 08:35:20 jonashg - * Cosmetic change to printouts. - * - * Revision 1.25 2002/08/21 08:15:42 jonashg - * Made it compile even without CONFIG_MTD_CONCAT defined. - * - * Revision 1.24 2002/08/20 13:12:35 jonashg - * * New approach to probing. Probe cse0 and cse1 separately and (mtd)concat - * the results. - * * Removed compile time tests concerning how the mtdram driver has been - * configured. The user will know about the misconfiguration at runtime - * instead. (The old approach made it impossible to use mtdram for anything - * else than RAM boot). - * - * Revision 1.23 2002/05/13 12:12:28 johana - * Allow compile without CONFIG_MTD_MTDRAM but warn at compiletime and - * be informative at runtime. - * - * Revision 1.22 2002/05/13 10:24:44 johana - * Added #if checks on MTDRAM CONFIG - * - * Revision 1.21 2002/05/06 16:05:20 johana - * Removed debug printout. - * - * Revision 1.20 2002/05/06 16:03:00 johana - * No more cramfs as root hack in generic code. - * It's handled by axisflashmap using mtdram. - * - * Revision 1.19 2002/03/15 17:10:28 bjornw - * Changed comment about cached access since we changed this before - * - * Revision 1.18 2002/03/05 17:06:15 jonashg - * Try amd_flash probe before cfi_probe since amd_flash driver can handle two - * (or more) flash chips of different model and the cfi driver cannot. - * - * Revision 1.17 2001/11/12 19:42:38 pkj - * Fixed compiler warnings. - * - * Revision 1.16 2001/11/08 11:18:58 jonashg - * Always read from uncached address to avoid problems with flushing - * cachelines after write and MTD-erase. No performance loss have been - * seen yet. - * - * Revision 1.15 2001/10/19 12:41:04 jonashg - * Name of probe has changed in MTD. - * - * Revision 1.14 2001/09/21 07:14:10 jonashg - * Made root filesystem (cramfs) use mtdblock driver when booting from flash. - * - * Revision 1.13 2001/08/15 13:57:35 jonashg - * Entire MTD updated to the linux 2.4.7 version. - * - * Revision 1.12 2001/06/11 09:50:30 jonashg - * Oops, 2MB is 0x200000 bytes. - * - * Revision 1.11 2001/06/08 11:39:44 jonashg - * Changed sizes and offsets in axis_default_partitions to use - * CONFIG_ETRAX_PTABLE_SECTOR. - * - * Revision 1.10 2001/05/29 09:42:03 jonashg - * Use macro for end marker length instead of sizeof. - * - * Revision 1.9 2001/05/29 08:52:52 jonashg - * Gave names to the magic fours (size of the ptable end marker). - * - * Revision 1.8 2001/05/28 15:36:20 jonashg - * * Removed old comment about ptable location in flash (it's a CONFIG_ option). - * * Variable ptable was initialized twice to the same value. - * - * Revision 1.7 2001/04/05 13:41:46 markusl - * Updated according to review remarks - * - * Revision 1.6 2001/03/07 09:21:21 bjornw - * No need to waste .data - * - * Revision 1.5 2001/03/06 16:27:01 jonashg - * Probe the entire flash area for flash devices. - * - * Revision 1.4 2001/02/23 12:47:15 bjornw - * Uncached flash in LOW_MAP moved from 0xe to 0x8 - * - * Revision 1.3 2001/02/16 12:11:45 jonashg - * MTD driver amd_flash is now included in MTD CVS repository. - * (It's now in drivers/mtd). - * - * Revision 1.2 2001/02/09 11:12:22 jonashg - * Support for AMD compatible non-CFI flash chips. - * Only tested with Toshiba TC58FVT160 so far. - * - * Revision 1.1 2001/01/12 17:01:18 bjornw - * * Added axisflashmap.c, a physical mapping for MTD that reads and understands - * Axis partition-table format. - * - * */ #include <linux/module.h> @@ -235,7 +112,7 @@ static struct map_info map_cse1 = { }; /* If no partition-table was found, we use this default-set. */ -#define MAX_PARTITIONS 7 +#define MAX_PARTITIONS 7 #define NUM_DEFAULT_PARTITIONS 3 /* @@ -300,6 +177,15 @@ static struct mtd_partition axis_partitions[MAX_PARTITIONS] = { }, }; +#ifdef CONFIG_ETRAX_AXISFLASHMAP_MTD0WHOLE +/* Main flash device */ +static struct mtd_partition main_partition = { + .name = "main", + .size = 0, + .offset = 0 +}; +#endif + /* * Probe a chip select for AMD-compatible (JEDEC) or CFI-compatible flash * chips in that order (because the amd_flash-driver is faster). @@ -316,15 +202,14 @@ static struct mtd_info *probe_cs(struct map_info *map_cs) mtd_cs = do_map_probe("cfi_probe", map_cs); #endif #ifdef CONFIG_MTD_JEDECPROBE - if (!mtd_cs) { + if (!mtd_cs) mtd_cs = do_map_probe("jedec_probe", map_cs); - } #endif return mtd_cs; } -/* +/* * Probe each chip select individually for flash chips. If there are chips on * both cse0 and cse1, the mtd_info structs will be concatenated to one struct * so that MTD partitions can cross chip boundries. @@ -351,7 +236,7 @@ static struct mtd_info *flash_probe(void) if (mtd_cse0 && mtd_cse1) { #ifdef CONFIG_MTD_CONCAT struct mtd_info *mtds[] = { mtd_cse0, mtd_cse1 }; - + /* Since the concatenation layer adds a small overhead we * could try to figure out if the chips in cse0 and cse1 are * identical and reprobe the whole cse0+cse1 window. But since @@ -372,7 +257,7 @@ static struct mtd_info *flash_probe(void) /* The best we can do now is to only use what we found * at cse0. - */ + */ mtd_cse = mtd_cse0; map_destroy(mtd_cse1); } @@ -395,7 +280,7 @@ static int __init init_axis_flash(void) struct partitiontable_head *ptable_head = NULL; struct partitiontable_entry *ptable; int use_default_ptable = 1; /* Until proven otherwise. */ - const char *pmsg = " /dev/flash%d at 0x%08x, size 0x%08x\n"; + const char pmsg[] = " /dev/flash%d at 0x%08x, size 0x%08x\n"; if (!(mymtd = flash_probe())) { /* There's no reason to use this module if no flash chip can @@ -435,7 +320,7 @@ static int __init init_axis_flash(void) unsigned long offset = CONFIG_ETRAX_PTABLE_SECTOR; unsigned char *p; unsigned long csum = 0; - + ptable = (struct partitiontable_entry *) ((unsigned long)ptable_head + sizeof(*ptable_head)); @@ -490,6 +375,16 @@ static int __init init_axis_flash(void) pidx++; } +#ifdef CONFIG_ETRAX_AXISFLASHMAP_MTD0WHOLE + if (mymtd) { + main_partition.size = mymtd->size; + err = add_mtd_partitions(mymtd, &main_partition, 1); + if (err) + panic("axisflashmap: Could not initialize " + "partition for whole main mtd device!\n"); + } +#endif + if (mymtd) { if (use_default_ptable) { printk(KERN_INFO " Using default partition table.\n"); @@ -499,9 +394,8 @@ static int __init init_axis_flash(void) err = add_mtd_partitions(mymtd, axis_partitions, pidx); } - if (err) { + if (err) panic("axisflashmap could not add MTD partitions!\n"); - } } if (!romfs_in_flash) { @@ -515,25 +409,24 @@ static int __init init_axis_flash(void) #else struct mtd_info *mtd_ram; - mtd_ram = kmalloc(sizeof(struct mtd_info), - GFP_KERNEL); - if (!mtd_ram) { + mtd_ram = kmalloc(sizeof(struct mtd_info), GFP_KERNEL); + if (!mtd_ram) panic("axisflashmap couldn't allocate memory for " "mtd_info!\n"); - } printk(KERN_INFO " Adding RAM partition for romfs image:\n"); - printk(pmsg, pidx, romfs_start, romfs_length); - - err = mtdram_init_device(mtd_ram, (void*)romfs_start, - romfs_length, "romfs"); - if (err) { + printk(pmsg, pidx, (unsigned)romfs_start, + (unsigned)romfs_length); + + err = mtdram_init_device(mtd_ram, + (void *)romfs_start, + romfs_length, + "romfs"); + if (err) panic("axisflashmap could not initialize MTD RAM " "device!\n"); - } #endif } - return err; } |