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