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/Linux-v5.4/drivers/mtd/nand/
Dbbt.c10 #define pr_fmt(fmt) "nand-bbt: " fmt
16 * nanddev_bbt_init() - Initialize the BBT (Bad Block Table)
19 * Initialize the in-memory BBT.
30 nand->bbt.cache = kcalloc(nwords, sizeof(*nand->bbt.cache), in nanddev_bbt_init()
32 if (!nand->bbt.cache) in nanddev_bbt_init()
40 * nanddev_bbt_cleanup() - Cleanup the BBT (Bad Block Table)
47 kfree(nand->bbt.cache); in nanddev_bbt_cleanup()
52 * nanddev_bbt_update() - Update a BBT
55 * Update the BBT. Currently a NOP function since on-flash bbt is not yet
69 * @entry: the BBT entry
[all …]
/Linux-v5.4/include/linux/mtd/
Dbbm.h4 * - Bad Block Table (BBT) implementation
21 * @pages: the page(s) where we find the bbt, used with option BBT_ABSPAGE
22 * when bbt is searched, then we store the found bbts pages here.
25 * @veroffs: offset of the bbt version counter in the oob are of the page
26 * @version: version read from the bbt page during scan
28 * @maxblocks: maximum number of blocks to search for a bbt. This number of
32 * bad) block in the stored bbt
55 /* The number of bits used per block in the bbt on the device */
63 /* The bbt is at the given page, else we must scan for the bbt */
65 /* bbt is stored per chip on multichip devices */
[all …]
Dnand.h130 * @cache: in memory BBT cache
166 * @bbt: bad block table info
184 struct nand_bbt bbt; member
711 /* BBT related functions */
731 * nanddev_bbt_pos_to_entry() - Convert a NAND position into a BBT entry
733 * @pos: the NAND position we want to get BBT entry for
735 * Return the BBT entry used to store information about the eraseblock pointed
738 * Return: the BBT entry storing information about eraseblock pointed by @pos.
749 * nanddev_bbt_is_initialized() - Check if the BBT has been initialized
752 * Return: true if the BBT has been initialized, false otherwise.
[all …]
/Linux-v5.4/drivers/mtd/nand/raw/
Dnand_bbt.c11 * depending on the options in the BBT descriptor(s). If no flash based BBT
13 * marked good / bad blocks. This information is used to create a memory BBT.
16 * If a flash based BBT is specified then the function first tries to find the
17 * BBT on flash. If a BBT is found then the contents are read and the memory
18 * based BBT is created. If a mirrored BBT is selected then the mirror is
20 * version number, then the mirror BBT is used to build the memory based BBT.
23 * If no BBT exists at all then the device is scanned for factory marked
27 * the BBT is searched and read but never created
46 * 10b: block is reserved (to protect the bbt area)
53 * - the space necessary for a bbt in FLASH does not exceed a block boundary
[all …]
DKconfig526 bool "Allow BBT writes on DiskOnChip Millennium and 2000TSOP"
531 device for the Bad Block Table (BBT). If you have existing INFTL
534 the BBT. If this is a concern for you, leave this option disabled and
535 Linux will not write BBT data into this area.
537 are detected by Linux, they will not be recorded in the BBT, which
543 Even if you leave this disabled, you can enable BBT writes at module
/Linux-v5.4/drivers/mtd/tests/
Dspeedtest.c35 static unsigned char *bbt; variable
229 bbt = kzalloc(ebcnt, GFP_KERNEL); in mtd_speedtest_init()
230 if (!bbt) in mtd_speedtest_init()
232 err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_speedtest_init()
236 if (!bbt[i]) in mtd_speedtest_init()
240 err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_speedtest_init()
248 if (bbt[i]) in mtd_speedtest_init()
266 if (bbt[i]) in mtd_speedtest_init()
280 err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_speedtest_init()
288 if (bbt[i]) in mtd_speedtest_init()
[all …]
Dpagetest.c32 static unsigned char *bbt; variable
58 for (i = 0; i < ebcnt && bbt[i]; ++i) in verify_eraseblock()
62 for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i) in verify_eraseblock()
85 if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) { in verify_eraseblock()
126 for (i = 0; i < ebcnt && bbt[i]; ++i) in crosstest()
130 for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i) in crosstest()
198 for (i = 0; i < ebcnt && bbt[i]; ++i) { in erasecrosstest()
204 while (ebnum2 && bbt[ebnum2]) in erasecrosstest()
276 for (i = 0; i < ebcnt && bbt[i]; ++i) { in erasetest()
372 bbt = kzalloc(ebcnt, GFP_KERNEL); in mtd_pagetest_init()
[all …]
Dmtd_test.c41 int mtdtest_scan_for_bad_eraseblocks(struct mtd_info *mtd, unsigned char *bbt, in mtdtest_scan_for_bad_eraseblocks() argument
51 bbt[i] = is_block_bad(mtd, eb + i) ? 1 : 0; in mtdtest_scan_for_bad_eraseblocks()
52 if (bbt[i]) in mtdtest_scan_for_bad_eraseblocks()
61 int mtdtest_erase_good_eraseblocks(struct mtd_info *mtd, unsigned char *bbt, in mtdtest_erase_good_eraseblocks() argument
68 if (bbt[i]) in mtdtest_erase_good_eraseblocks()
Dsubpagetest.c29 static unsigned char *bbt; variable
252 if (bbt[i]) in verify_all_eraseblocks_ff()
317 bbt = kzalloc(ebcnt, GFP_KERNEL); in mtd_subpagetest_init()
318 if (!bbt) in mtd_subpagetest_init()
321 err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_subpagetest_init()
325 err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_subpagetest_init()
332 if (bbt[i]) in mtd_subpagetest_init()
349 if (bbt[i]) in mtd_subpagetest_init()
363 err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_subpagetest_init()
375 if (bbt[i]) in mtd_subpagetest_init()
[all …]
Dstresstest.c35 static unsigned char *bbt; variable
51 if (bbt[eb]) in rand_eb()
81 if (bbt[eb + 1]) { in do_read()
106 if (bbt[eb + 1]) in do_write()
197 bbt = kzalloc(ebcnt, GFP_KERNEL); in mtd_stresstest_init()
198 if (!bbt) in mtd_stresstest_init()
200 err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_stresstest_init()
221 kfree(bbt); in mtd_stresstest_init()
Doobtest.c34 static unsigned char *bbt; variable
96 if (bbt[i]) in write_whole_device()
320 if (bbt[i]) in verify_all_eraseblocks()
385 bbt = kzalloc(ebcnt, GFP_KERNEL); in mtd_oobtest_init()
386 if (!bbt) in mtd_oobtest_init()
389 err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_oobtest_init()
401 err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_oobtest_init()
421 err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_oobtest_init()
434 if (bbt[i]) in mtd_oobtest_init()
454 err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_oobtest_init()
[all …]
Dreadtest.c29 static unsigned char *bbt; variable
161 bbt = kzalloc(ebcnt, GFP_KERNEL); in mtd_readtest_init()
162 if (!bbt) in mtd_readtest_init()
164 err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt); in mtd_readtest_init()
173 if (bbt[i]) in mtd_readtest_init()
198 kfree(bbt); in mtd_readtest_init()
Dmtd_test.h17 int mtdtest_scan_for_bad_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
19 int mtdtest_erase_good_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
/Linux-v5.4/drivers/mtd/nand/onenand/
Donenand_bbt.c11 * Split BBT core and chip specific BBT.
103 bbm->bbt[i >> 3] |= 0x03 << (i & 0x6); in create_bbt()
128 * The function creates a memory based bbt by scanning the device
153 res = (bbm->bbt[block >> 3] >> (block & 0x06)) & 0x03; in onenand_isbad_bbt()
155 pr_debug("onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n", in onenand_isbad_bbt()
189 bbm->bbt = kzalloc(len, GFP_KERNEL); in onenand_scan_bbt()
190 if (!bbm->bbt) in onenand_scan_bbt()
201 printk(KERN_ERR "onenand_scan_bbt: Can't scan flash and build the RAM-based BBT\n"); in onenand_scan_bbt()
202 kfree(bbm->bbt); in onenand_scan_bbt()
203 bbm->bbt = NULL; in onenand_scan_bbt()
/Linux-v5.4/Documentation/devicetree/bindings/mtd/
Dgpmi-nand.txt30 - nand-on-flash-bbt: boolean to enable on flash bbt option if not
42 flash based BBT for identifying bad blocks.
44 'nand-on-flash-bbt'.
Ddavinci-nand.txt52 - nand-on-flash-bbt: use flash based bad block table support. OOB
66 - ti,davinci-nand-use-bbt: use flash based bad block table support. OOB
88 nand-on-flash-bbt;
Dingenic,jz4780-nand.txt32 - nand-on-flash-bbt: boolean to enable on flash bbt option, if not present false
59 nand-on-flash-bbt;
Dbrcm,brcmnand.txt109 - nand-on-flash-bbt : boolean, to enable the on-flash BBT for this
143 nand-on-flash-bbt;
180 nand-on-flash-bbt;
Dnand-controller.yaml74 nand-on-flash-bbt:
78 Block Table (BBT). If not found, it will create one, reserve
83 build a volatile BBT in RAM.
Dsamsung-s3c2410.txt18 - nand-on-flash-bbt : see nand-controller.yaml
38 nand-on-flash-bbt;
Dlpc32xx-slc.txt6 - nand-on-flash-bbt: Use bad block table on flash
41 nand-on-flash-bbt;
Dstm32-fmc2-nand.txt27 - nand-on-flash-bbt: see nand-controller.yaml
57 nand-on-flash-bbt;
Dvf610-nfc.txt35 - nand-on-flash-bbt: see nand-controller.yaml
57 nand-on-flash-bbt;
Dnvidia-tegra20-nand.txt30 - nand-on-flash-bbt: See nand-controller.yaml
59 nand-on-flash-bbt;
Dmtk-nand.txt48 - nand-on-flash-bbt: Store BBT on NAND Flash.
126 nand-on-flash-bbt;

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