Testing Env: Host: Ubuntu 10.10 x86_64 Kernel: 2.6.35-25-generic beagleboard kernel and rootfs from weekly build 20110221 http://autobuilder.pokylinux.org/nightly/20110221-1/machines/beagleboard/arm/ u-boot environment setting: ########### setenv optargs 'omapdss.def_disp=dvi vram=12M omapfb.mode="dvi:800x480MR-16@60" video=omapfb.vram:0:4M,1:4M,2:4M omapfb.debug=y omapdss.debug=y' setenv console ttyO2,115200n8;mmcinit;fatload mmc 0 0x80800000 uImage.bin;run mmcargs; bootm 0x80800000 ########### There is a NAND flash on the board, but the system can not recognize it. When the board boot up, U-boot message: ###################### U-Boot 2009.01-dirty (Feb 19 2009 - 12:23:21) I2C: ready OMAP3530-GP rev 2, CPU-OPP2 L3-165MHz OMAP3 Beagle board + LPDDR/NAND DRAM: 256 MB NAND: 256 MiB Using default environment ##################### ##################### root@beagleboard:~# cat /proc/mtd dev: size erasesize name root@beagleboard:~# dmesg |grep -i nand Found NAND on CS0 Registering NAND on CS0 ##################### There is no /dev/mtd* devices. Kernel configure: ################## root@beagleboard:~# zcat /proc/config.gz |grep -i mtd CONFIG_MTD=y # CONFIG_MTD_DEBUG is not set # CONFIG_MTD_TESTS is not set CONFIG_MTD_CONCAT=y CONFIG_MTD_PARTITIONS=y # CONFIG_MTD_REDBOOT_PARTS is not set CONFIG_MTD_CMDLINE_PARTS=y # CONFIG_MTD_AFS_PARTS is not set # CONFIG_MTD_AR7_PARTS is not set CONFIG_MTD_CHAR=y CONFIG_MTD_BLKDEVS=y CONFIG_MTD_BLOCK=y # CONFIG_MTD_OOPS is not set CONFIG_MTD_CFI=y # CONFIG_MTD_JEDECPROBE is not set CONFIG_MTD_GEN_PROBE=y # CONFIG_MTD_CFI_ADV_OPTIONS is not set CONFIG_MTD_MAP_BANK_WIDTH_1=y CONFIG_MTD_MAP_BANK_WIDTH_2=y CONFIG_MTD_MAP_BANK_WIDTH_4=y # CONFIG_MTD_MAP_BANK_WIDTH_8 is not set # CONFIG_MTD_MAP_BANK_WIDTH_16 is not set # CONFIG_MTD_MAP_BANK_WIDTH_32 is not set CONFIG_MTD_CFI_I1=y CONFIG_MTD_CFI_I2=y # CONFIG_MTD_CFI_I4 is not set # CONFIG_MTD_CFI_I8 is not set CONFIG_MTD_CFI_INTELEXT=y # CONFIG_MTD_CFI_AMDSTD is not set # CONFIG_MTD_CFI_STAA is not set CONFIG_MTD_CFI_UTIL=y # CONFIG_MTD_RAM is not set # CONFIG_MTD_ROM is not set # CONFIG_MTD_ABSENT is not set # CONFIG_MTD_COMPLEX_MAPPINGS is not set # CONFIG_MTD_PHYSMAP is not set # CONFIG_MTD_ARM_INTEGRATOR is not set # CONFIG_MTD_PLATRAM is not set # Self-contained MTD device drivers # CONFIG_MTD_DATAFLASH is not set # CONFIG_MTD_M25P80 is not set # CONFIG_MTD_SST25L is not set # CONFIG_MTD_SLRAM is not set # CONFIG_MTD_PHRAM is not set # CONFIG_MTD_MTDRAM is not set # CONFIG_MTD_BLOCK2MTD is not set # CONFIG_MTD_DOC2000 is not set # CONFIG_MTD_DOC2001 is not set # CONFIG_MTD_DOC2001PLUS is not set CONFIG_MTD_NAND_ECC=y # CONFIG_MTD_NAND_ECC_SMC is not set CONFIG_MTD_NAND=y # CONFIG_MTD_NAND_VERIFY_WRITE is not set # CONFIG_MTD_SM_COMMON is not set # CONFIG_MTD_NAND_MUSEUM_IDS is not set # CONFIG_MTD_NAND_GPIO is not set # CONFIG_MTD_NAND_OMAP2 is not set CONFIG_MTD_NAND_IDS=y # CONFIG_MTD_NAND_DISKONCHIP is not set # CONFIG_MTD_NAND_NANDSIM is not set # CONFIG_MTD_NAND_PLATFORM is not set # CONFIG_MTD_ALAUDA is not set # CONFIG_MTD_ONENAND is not set # CONFIG_MTD_LPDDR is not set CONFIG_MTD_UBI=y CONFIG_MTD_UBI_WL_THRESHOLD=4096 CONFIG_MTD_UBI_BEB_RESERVE=1 # CONFIG_MTD_UBI_GLUEBI is not set # CONFIG_MTD_UBI_DEBUG is not set # CONFIG_ROMFS_BACKED_BY_MTD is not set root@beagleboard:~# ################# This issue also happens on 2.6.34 kernel.
This is expected, since NAND/Flash aren't on the current minimal BSPs feature list. We'll expand the support for beagleboard peripherals post 1.0. Marking this as an enhancement and leaving the milestone blank.
bumping to 1.1
commit dcfb6e4d2ab5df32f0f2408a1aafd6923018555f Author: Bruce Ashfield <bruce.ashfield@windriver.com> Date: Wed Jun 8 15:33:02 2011 -0400
Verified with 20110806 build. Now the system can recognize NAND fash as a mtd device: ######## root@beagleboard:~# cat /proc/devices |grep mtd 90 mtd 31 mtdblock root@beagleboard:~# ls -l /dev/mtdblock* brw-rw---- 1 root disk 31, 0 Jan 1 2000 /dev/mtdblock0 brw-rw---- 1 root disk 31, 1 Jan 1 2000 /dev/mtdblock1 brw-rw---- 1 root disk 31, 2 Jan 1 2000 /dev/mtdblock2 brw-rw---- 1 root disk 31, 3 Jan 1 2000 /dev/mtdblock3 brw-rw---- 1 root disk 31, 4 Jan 1 2000 /dev/mtdblock4 ########