This patchserie add the popssibility to define mtd partitions on spi nor flash, and use this settings with the sf commands.
steps:
- add MTD layer driver for spi, original patch from: http://git.denx.de/?p=u-boot/u-boot-mips.git;a=commitdiff;h=bb246819cdc90493...
and addapted it to current mainline.
- move common functions to get offset and size from cmdline nand command to extract offset and size from a mtd partition to common place "drivers/mtd/mtd_uboot.c" maybe another place is better?
- add to the sf command the possibility to use offset and size from the settings in mtdparts
With this patchset, the sf command looks now:
=> sf sf - SPI flash sub-system
Usage: sf probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus and chip select sf read addr offset|partition len - read `len' bytes starting at `offset' to memory at `addr' sf write addr offset|partition len - write `len' bytes from memory at `addr' to flash at `offset' sf erase offset|partition [+]len - erase `len' bytes from `offset' `+len' round up `len' to block size sf update addr offset|partition len - erase and write `len' bytes from memory at `addr' to flash at `offset' => for example "env" is defined in mtdparts:
=> sf read 13000000 env device 0 offset 0xd0000, size 0x10000 SF: 65536 bytes @ 0xd0000 Read: OK =>
There are the followings checkpatch warnings:
CHECK: Alignment should match open parenthesis #153: FILE: common/cmd_nand.c:217: + if (arg_off(argv[2], &idx, &addr, &maxsize, &maxsize, + MTD_DEV_TYPE_NAND, nand_info[idx].size)) {
CHECK: Alignment should match open parenthesis #179: FILE: common/cmd_nand.c:557: + if (arg_off(argv[3], &dev, &off, &size, &maxsize, + MTD_DEV_TYPE_NAND, nand_info[dev].size))
CHECK: Alignment should match open parenthesis #193: FILE: common/cmd_nand.c:576: + if (arg_off_size(argc - 3, argv + 3, &dev, &off, &size, + &maxsize, MTD_DEV_TYPE_NAND,
total: 0 errors, 0 warnings, 3 checks, 361 lines checked
NOTE: Ignored message types: COMPLEX_MACRO CONSIDER_KSTRTO MINMAX MULTISTATEMENT_MACRO_USE_DO_WHILE NETWORKING_BLOCK_COMMENT_STYLE USLEEP_RANGE
20140714_ml_mtdparts/0002-mtd-nand-move-common-functions-from-cmd_nand.c-to-co.patch has style problems, please review.
I see not, why this warning pops up ...
- changes for v2: - mtd-spi-add-MTD-layer-driver.patch - add comment from Daniel Schwierzeck: fix compile error from original patch with "static inline" rather than "static __maybe_unused"
Cc: Scott Wood scottwood@freescale.com Cc: Tom Rini trini@ti.com Cc: Daniel Schwierzeck daniel.schwierzeck@gmail.com Cc: Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com
Daniel Schwierzeck (1): mtd, spi: add MTD layer driver
Heiko Schocher (2): mtd, nand: move common functions from cmd_nand.c to common place spi, sf: use offset and size in sf cmd from mtdpartition
README | 3 + common/cmd_nand.c | 140 ++++++++---------------------------------- common/cmd_onenand.c | 19 ++---- common/cmd_sf.c | 59 +++++++++--------- drivers/mtd/Makefile | 4 +- drivers/mtd/mtd_uboot.c | 114 ++++++++++++++++++++++++++++++++++ drivers/mtd/spi/Makefile | 1 + drivers/mtd/spi/sf_internal.h | 13 ++++ drivers/mtd/spi/sf_mtd.c | 104 +++++++++++++++++++++++++++++++ drivers/mtd/spi/sf_probe.c | 5 ++ include/linux/mtd/mtd.h | 7 +++ 11 files changed, 310 insertions(+), 159 deletions(-) create mode 100644 drivers/mtd/mtd_uboot.c create mode 100644 drivers/mtd/spi/sf_mtd.c