u-boot.git/drivers/mtd/nand, branch v2015.01

mtd: nand: do not scan BBT after scrub

2015-01-09T18:19:06Z

Currently, "nand scrub" runs chip->scan_bbt at the end of nand_erase_opts() even if NAND_SKIP_BBTSCAN flag is set. It violates the intention of NAND_SKIP_BBTSCAN. Move NAND_SKIP_BBTSCAN flag check to nand_block_checkbad() so that chip->scan_bbt() is never run if NAND_SKIP_BBTSCAN is set. Also, unset NAND_BBT_SCANNED flag instead of running chip->scan_bbt() right after scrub. We can be lazier here because the BBT is scanned at the next call of nand_block_checkbad(). Signed-off-by: Masahiro Yamada Cc: Scott Wood

mtd: nand: Mark the BBT as scanned prior to calling scan_bbt again

2015-01-09T18:19:02Z

Commit 35c204d8a9d0 (nand: reinstate lazy bad block scanning) broke NAND_BBT_USE_FLASH feature. Its git-log claimed that it reinstated the change as by commit fb49454b1b6c ("nand: reinstate lazy bad block scanning"), but it moved "chip->options |= NAND_BBT_SCANNED" below "chip->scan_bbt(mtd);". It causes recursion if scan_bbt does not find a flash based BBT and tries to write one, and the attempt to erase the BBT area causes a bad block check. Reinstate commit ff49ea8977b5 (NAND: Mark the BBT as scanned prior to calling scan_bbt.). Signed-off-by: Masahiro Yamada Cc: Rostislav Lisovy Cc: Heiko Schocher Cc: Scott Wood

mtd: nand: revive "nand scrub" command

2015-01-09T18:18:58Z

Since commit ff94bc40af34 (mtd, ubi, ubifs: resync with Linux-3.14), the "nand scrub" command has not been working. Signed-off-by: Masahiro Yamada Cc: Scott Wood Cc: Heiko Schocher

mtd: nand: omap_gpmc: fix error handling

2015-01-05T21:40:18Z

"err" was an unsigned variable, causing negative error codes to turn into positive values, which are interpreted as an amount of succesfully corrected bitflips (and thus not an error). In particular, this resulted in that if the elm reports uncorrectable errors (-EBADMSG), the MTD layer (and UBI) falsely succeeded. Signed-off-by: Guido Martínez Reviewed-by: Stefan Roese

driver/mtd: Fix IFC compilation warnings

2014-12-11T17:42:32Z

'eccstat' array elements might be used uninitialized Signed-off-by: Jaiprakash Singh Reviewed-by: York Sun

arm: ls102xa: Add NAND boot support for LS1021AQDS board

2014-12-11T17:40:24Z

This patch adds NAND boot support for LS1021AQDS board. SPL framework is used. PBL initialize the internal RAM and copy SPL to it, then SPL initialize DDR using SPD and copy u-boot from NAND flash to DDR, finally SPL transfer control to u-boot. Signed-off-by: Prabhakar Kushwaha Signed-off-by: Alison Wang Reviewed-by: York Sun

mtd: nand: omap_gpmc: Always use ready/busy pin

2014-12-05T02:28:31Z

The functions to detect the state of the ready / busy signal is already available but only used in the SPL case. Lets use it always, also for the main U-Boot. As all boards should have this HW connection. Testing on Siemens Draco (am335x) showed a small perfomance gain by using this ready pin to detect the NAND chip state. Here the values tested on Draco with Hynix 4GBit NAND: Without NAND ready pin: U-Boot# time nand read 80400000 0 400000 NAND read: device 0 offset 0x0, size 0x400000 4194304 bytes read: OK time: 2.947 seconds, 2947 ticks With NAND ready pin: U-Boot# time nand read 80400000 0 400000 NAND read: device 0 offset 0x0, size 0x400000 4194304 bytes read: OK time: 2.795 seconds, 2795 ticks So an increase of approx. 5%. Signed-off-by: Stefan Roese Cc: Tom Rini Cc: Scott Wood Cc: Roger Meier Cc: Samuel Egli

mtd: nand: s3c: Unify the register definition and naming

2014-11-27T05:21:43Z

Merge struct s3c2410_nand and struct s3c2440_nand into one unified struct s3c24x0_nand. While at it, fix up and rename the functions to retrieve the NAND base address and fix up the s3c NAND driver to reflect this change. Signed-off-by: Marek Vasut Cc: Kyungmin Park Cc: Lukasz Majewski Cc: Minkyu Kang Cc: Scott Wood Cc: Vladimir Zapolskiy

mtd/nand/vf610_nfc: Disable subpage writes

2014-11-27T01:53:49Z

This patch disables subpage writes for vf610_nfc nand driver. This is required, as without this fix, writing unaligned u-boot images with DFU results in a hang. Trying to write unalgined binary images also results in a hang, without disabling subpage writes. Patch has been tested on a Colibri VF61 module. Signed-off-by: Sanchayan Maity

mtd: denali: set some registers after nand_scan_ident()

2014-11-27T01:53:22Z

Some but not all of implementations of the Denali NAND controller have hardware circuits to detect the device parameters such as page_size, erase_size, etc. Even on those SoCs with such hardware supported, the hardware is known to detect wrong parameters for some nasty (almost buggy) NAND devices. The device parameters detected during nand_scan_ident() are more trustworthy. This commit sets some hardware registers to mtd->pagesize, mtd->oobsize, etc. in the code between nand_scan_ident() and nand_scan_tail(). Signed-off-by: Masahiro Yamada Cc: Scott Wood Cc: Chin Liang See