diff options
Diffstat (limited to 'Documentation/DocBook/mtdnand.tmpl')
-rw-r--r-- | Documentation/DocBook/mtdnand.tmpl | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl index df0d089d0fb9..133cd6c3f3c1 100644 --- a/Documentation/DocBook/mtdnand.tmpl +++ b/Documentation/DocBook/mtdnand.tmpl | |||
@@ -174,7 +174,7 @@ | |||
174 | </para> | 174 | </para> |
175 | <programlisting> | 175 | <programlisting> |
176 | static struct mtd_info *board_mtd; | 176 | static struct mtd_info *board_mtd; |
177 | static unsigned long baseaddr; | 177 | static void __iomem *baseaddr; |
178 | </programlisting> | 178 | </programlisting> |
179 | <para> | 179 | <para> |
180 | Static example | 180 | Static example |
@@ -182,7 +182,7 @@ static unsigned long baseaddr; | |||
182 | <programlisting> | 182 | <programlisting> |
183 | static struct mtd_info board_mtd; | 183 | static struct mtd_info board_mtd; |
184 | static struct nand_chip board_chip; | 184 | static struct nand_chip board_chip; |
185 | static unsigned long baseaddr; | 185 | static void __iomem *baseaddr; |
186 | </programlisting> | 186 | </programlisting> |
187 | </sect1> | 187 | </sect1> |
188 | <sect1 id="Partition_defines"> | 188 | <sect1 id="Partition_defines"> |
@@ -283,8 +283,8 @@ int __init board_init (void) | |||
283 | } | 283 | } |
284 | 284 | ||
285 | /* map physical address */ | 285 | /* map physical address */ |
286 | baseaddr = (unsigned long)ioremap(CHIP_PHYSICAL_ADDRESS, 1024); | 286 | baseaddr = ioremap(CHIP_PHYSICAL_ADDRESS, 1024); |
287 | if(!baseaddr){ | 287 | if (!baseaddr) { |
288 | printk("Ioremap to access NAND chip failed\n"); | 288 | printk("Ioremap to access NAND chip failed\n"); |
289 | err = -EIO; | 289 | err = -EIO; |
290 | goto out_mtd; | 290 | goto out_mtd; |
@@ -316,7 +316,7 @@ int __init board_init (void) | |||
316 | goto out; | 316 | goto out; |
317 | 317 | ||
318 | out_ior: | 318 | out_ior: |
319 | iounmap((void *)baseaddr); | 319 | iounmap(baseaddr); |
320 | out_mtd: | 320 | out_mtd: |
321 | kfree (board_mtd); | 321 | kfree (board_mtd); |
322 | out: | 322 | out: |
@@ -341,7 +341,7 @@ static void __exit board_cleanup (void) | |||
341 | nand_release (board_mtd); | 341 | nand_release (board_mtd); |
342 | 342 | ||
343 | /* unmap physical address */ | 343 | /* unmap physical address */ |
344 | iounmap((void *)baseaddr); | 344 | iounmap(baseaddr); |
345 | 345 | ||
346 | /* Free the MTD device structure */ | 346 | /* Free the MTD device structure */ |
347 | kfree (board_mtd); | 347 | kfree (board_mtd); |
@@ -362,7 +362,7 @@ module_exit(board_cleanup); | |||
362 | <sect1 id="Multiple_chip_control"> | 362 | <sect1 id="Multiple_chip_control"> |
363 | <title>Multiple chip control</title> | 363 | <title>Multiple chip control</title> |
364 | <para> | 364 | <para> |
365 | The nand driver can control chip arrays. Therefor the | 365 | The nand driver can control chip arrays. Therefore the |
366 | board driver must provide an own select_chip function. This | 366 | board driver must provide an own select_chip function. This |
367 | function must (de)select the requested chip. | 367 | function must (de)select the requested chip. |
368 | The function pointer in the nand_chip structure must | 368 | The function pointer in the nand_chip structure must |
@@ -488,7 +488,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip) | |||
488 | The ECC bytes must be placed immidiately after the data | 488 | The ECC bytes must be placed immidiately after the data |
489 | bytes in order to make the syndrome generator work. This | 489 | bytes in order to make the syndrome generator work. This |
490 | is contrary to the usual layout used by software ECC. The | 490 | is contrary to the usual layout used by software ECC. The |
491 | seperation of data and out of band area is not longer | 491 | separation of data and out of band area is not longer |
492 | possible. The nand driver code handles this layout and | 492 | possible. The nand driver code handles this layout and |
493 | the remaining free bytes in the oob area are managed by | 493 | the remaining free bytes in the oob area are managed by |
494 | the autoplacement code. Provide a matching oob-layout | 494 | the autoplacement code. Provide a matching oob-layout |
@@ -560,7 +560,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip) | |||
560 | bad blocks. They have factory marked good blocks. The marker pattern | 560 | bad blocks. They have factory marked good blocks. The marker pattern |
561 | is erased when the block is erased to be reused. So in case of | 561 | is erased when the block is erased to be reused. So in case of |
562 | powerloss before writing the pattern back to the chip this block | 562 | powerloss before writing the pattern back to the chip this block |
563 | would be lost and added to the bad blocks. Therefor we scan the | 563 | would be lost and added to the bad blocks. Therefore we scan the |
564 | chip(s) when we detect them the first time for good blocks and | 564 | chip(s) when we detect them the first time for good blocks and |
565 | store this information in a bad block table before erasing any | 565 | store this information in a bad block table before erasing any |
566 | of the blocks. | 566 | of the blocks. |
@@ -1094,7 +1094,7 @@ in this page</entry> | |||
1094 | manufacturers specifications. This applies similar to the spare area. | 1094 | manufacturers specifications. This applies similar to the spare area. |
1095 | </para> | 1095 | </para> |
1096 | <para> | 1096 | <para> |
1097 | Therefor NAND aware filesystems must either write in page size chunks | 1097 | Therefore NAND aware filesystems must either write in page size chunks |
1098 | or hold a writebuffer to collect smaller writes until they sum up to | 1098 | or hold a writebuffer to collect smaller writes until they sum up to |
1099 | pagesize. Available NAND aware filesystems: JFFS2, YAFFS. | 1099 | pagesize. Available NAND aware filesystems: JFFS2, YAFFS. |
1100 | </para> | 1100 | </para> |