Hello,
My uboot can read my flash chip, finding the uImage and the initramfs,
and booting the kernel fine. However, I'd like the Linux kernel to
read my flash chip so that it can update files in it.
My flash chip is the Spansion S29JL064H (AMD), 16 bit wide, 64 Mbit.
The chip is mapped from FF800000 to FFFFFFFF. The rootfs.jffs2 was
written on 0XFF990000 and is 0x390000 long.
I know that the JFFS is written correctly, because it is detected by uboot:
=> fsinfo
### filesystem type is JFFS2
Scanning JFFS2 FS: ....... done.
Compression: NONE
frag count: 523
compressed sum: 138074
uncompressed sum: 138074
Compression: ZERO
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: RTIME
frag count: 1
compressed sum: 48
uncompressed sum: 52
Compression: RUBINMIPS
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: COPY
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: DYNRUBIN
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: ZLIB
frag count: 2031
compressed sum: 3370991
uncompressed sum: 7598685
=> flinfo
Bank # 1: CFI conformant FLASH (16 x 16) Size: 8 MB in 142 Sectors
AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x7E0201
Erase timeout: 8192 ms, write timeout: 1 ms
Sector Start Addresses:
FF800000 FF802000 FF804000 FF806000 FF808000
FF80A000 FF80C000 FF80E000 FF810000 FF820000
FF830000 FF840000 FF850000 FF860000 FF870000
FF880000 FF890000 FF8A0000 FF8B0000 FF8C0000
FF8D0000 FF8E0000 FF8F0000 FF900000 FF910000
FF920000 FF930000 FF940000 FF950000 FF960000
FF970000 FF980000 FF990000 FF9A0000 FF9B0000
FF9C0000 FF9D0000 FF9E0000 FF9F0000 FFA00000
FFA10000 FFA20000 FFA30000 FFA40000 FFA50000
FFA60000 FFA70000 FFA80000 FFA90000 FFAA0000
FFAB0000 FFAC0000 FFAD0000 FFAE0000 FFAF0000
FFB00000 FFB10000 FFB20000 FFB30000 FFB40000
FFB50000 FFB60000 FFB70000 FFB80000 FFB90000
FFBA0000 FFBB0000 FFBC0000 FFBD0000 FFBE0000
FFBF0000 FFC00000 FFC10000 FFC20000 FFC30000
FFC40000 FFC50000 FFC60000 FFC70000 FFC80000
FFC90000 FFCA0000 FFCB0000 FFCC0000 FFCD0000
FFCE0000 FFCF0000 FFD00000 FFD10000 FFD20000
FFD30000 FFD40000 FFD50000 FFD60000 FFD70000
FFD80000 FFD90000 FFDA0000 FFDB0000 FFDC0000
FFDD0000 FFDE0000 FFDF0000 FFE00000 FFE10000
FFE20000 FFE30000 FFE40000 FFE50000 FFE60000
FFE70000 FFE80000 FFE90000 FFEA0000 FFEB0000
FFEC0000 FFED0000 FFEE0000 FFEF0000 FFF00000 RO
FFF10000 RO FFF20000 RO FFF30000 RO FFF40000 RO FFF50000 RO
FFF60000 RO FFF70000 RO FFF80000 FFF90000 FFFA0000
FFFB0000 FFFC0000 FFFD0000 FFFE0000 FFFF0000
FFFF2000 FFFF4000 FFFF6000 FFFF8000 FFFFA000
FFFFC000 FFFFE000
My bootargs are:
bootargs=console=ttyCPM0,115200 root=/dev/mtdblock1 rw
mtdparts=phys:1600K(ROM)ro,6M(root),512K(U-Boot)ro,512K(unused)
However, the kernel does not detect any flash chip (nor there's any
indication that a CFI probe is being performed).
My flash kconfig section:
#
# RAM/ROM/Flash chip drivers
#
CONFIG_MTD_CFI=y
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_GEN_PROBE=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
# CONFIG_MTD_CFI_NOSWAP is not set
# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
CONFIG_MTD_CFI_LE_BYTE_SWAP=y
# CONFIG_MTD_CFI_GEOMETRY 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_OTP is not set
# CONFIG_MTD_CFI_INTELEXT is not set
CONFIG_MTD_CFI_AMDSTD=y
# 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
#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_PHYSMAP is not set
# CONFIG_MTD_PHYSMAP_OF is not set
# CONFIG_MTD_INTEL_VR_NOR is not set
# CONFIG_MTD_PLATRAM is not set
#
# Self-contained MTD device drivers
#
# CONFIG_MTD_PMC551 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
Roberto Guerra
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