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Altera_Forum
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9 years ago

mtd: partition "JFFS2 Filesystem" doesn't end on an erase block -- force read-only

Hello everybody I am trying to boot linux with mmu kernel from rocket boards (http://rocketboards.org/foswiki/documentation/niosiilinuxusermanual) in a ARRIA V GX STARTER KIT . I can boo...
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Altera_Forum
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9 years ago

I suspect this problem is caused by PAGE SIZE and ERASE BLOCK SIZE building rootfs

I am using a 1-Gb CFI-compatible synchronous flash, 16-bit data memory interface. PN PC28F00AP30BF

at u-boot i try flinfo and get 

ARRIA V GX# > flinfo
Bank#  1: CFI conformant flash (16 x 16)  Size: 128 MB in 1024 Sectors
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x8963
  Erase timeout: 4096 ms, write timeout: 2 ms
  Buffer write timeout: 500 ms, buffer size: 1024 bytes
  Sector Start Addresses:
  E0000000   RO   E0008000   RO   E0010000   RO   E0018000   RO   E0020000   RO
  E0040000   RO   E0060000   RO   E0080000   RO   E00A0000   RO   E00C0000   RO
  E00E0000   RO   E0100000   RO   E0120000   RO   E0140000   RO   E0160000   RO
  E0180000   RO   E01A0000   RO   E01C0000   RO   E01E0000   RO   E0200000   RO
  E0220000   RO   E0240000   RO   E0260000   RO   E0280000   RO   E02A0000   RO
  E02C0000   RO   E02E0000   RO   E0300000   RO   E0320000   RO   E0340000   RO
  E0360000   RO   E0380000   RO   E03A0000   RO   E03C0000   RO   E03E0000   RO
  E0400000   RO   E0420000   RO   E0440000   RO   E0460000   RO   E0480000   RO
  E04A0000   RO   E04C0000   RO   E04E0000   RO   E0500000   RO   E0520000   RO
  E0540000   RO   E0560000   RO   E0580000   RO   E05A0000   RO   E05C0000   RO
  E05E0000   RO   E0600000   RO   E0620000   RO   E0640000   RO   E0660000   RO
  E0680000   RO   E06A0000   RO   E06C0000   RO   E06E0000   RO   E0700000   RO
  E0720000   RO   E0740000   RO   E0760000   RO   E0780000   RO   E07A0000   RO
  E07C0000   RO   E07E0000   RO   E0800000   RO   E0820000   RO   E0840000   RO
  E0860000   RO   E0880000   RO   E08A0000   RO   E08C0000   RO   E08E0000   RO
  E0900000   RO   E0920000   RO   E0940000   RO   E0960000   RO   E0980000   RO
  E09A0000   RO   E09C0000   RO   E09E0000   RO   E0A00000   RO   E0A20000   RO
  E0A40000   RO   E0A60000   RO   E0A80000   RO   E0AA0000   RO   E0AC0000   RO
  E0AE0000   RO   E0B00000   RO   E0B20000   RO   E0B40000   RO   E0B60000   RO
  E0B80000   RO   E0BA0000   RO   E0BC0000   RO   E0BE0000   RO   E0C00000   RO
  E0C20000   RO   E0C40000   RO   E0C60000   RO   E0C80000   RO   E0CA0000   RO
  E0CC0000   RO   E0CE0000   RO   E0D00000   RO   E0D20000   RO   E0D40000   RO
  E0D60000   RO   E0D80000   RO   E0DA0000   RO   E0DC0000   RO   E0DE0000   RO
  E0E00000   RO   E0E20000   RO   E0E40000   RO   E0E60000   RO   E0E80000   RO
  E0EA0000   RO   E0EC0000   RO   E0EE0000   RO   E0F00000   RO   E0F20000   RO

i calculate the erase block => (size/sectors) * 1024 * 1024 = (128/1024) * 1024 * 1024 = 131072 bytes (0x20000)

but i dont know calculate the page size

please can someone tell me if my suspicions are correct?

if yes how i can calculate the true page size and erase block size??

lets go guys, help me please!!!!!