forked from Minki/linux
CRIS v10: Update and improve axisflashmap.c
- Add config to use mtd0 as whole flash device. - Fix whitespace errors. - Remove braces around single statement ifs. - Break long lines. - Remove unnecessary CVS log.
This commit is contained in:
Jesper Nilsson
parent
8c11bffae7
commit
32872b203b
@ -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);
|
||||
printk(pmsg, pidx, (unsigned)romfs_start,
|
||||
(unsigned)romfs_length);
|
||||
|
||||
err = mtdram_init_device(mtd_ram, (void*)romfs_start,
|
||||
romfs_length, "romfs");
|
||||
if (err) {
|
||||
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;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user