[U-Boot-Users] problem with S29GL128N flash using cfi driver

[nicky geerts]

Hi,

The message to be read is "QRY" and not "RQY", my mistake.

Best Regards,

Nicky

2007/6/26, nicky geerts <nicky.geerts.news at gmail.com>:
> Dear all,
>
> I'm using a PPC405EP board, containing a 64MB SDRAM and 16MB flash
> memory.  The flash memory is a S29GL128N chip, with a 16 bit
> interface.
> Up until today I have been using u-boot version 1.1.0 with the custom
> flash driver for AMD flashes.
>
> However, with an upcoming change to strataflash, it seemed logical to
> switch to the cfi flash driver, which would support both.
>
> Now, I have the 1.2.0 version, but the SW doesn't seem to be able to
> put the flash chip in CFI request mode.  When I execute the same
> commands manually, I do see the "RQY".
>
> In the below output, the data read from the flash is actually the
> flash contents (erased flash), and not the CFI information I was
> expecting.
>
> I did see in the code that info->reset_cmd in function
> flash_detect_cfi is used uninitialised, so that might be a bug, but
> when I use CMD0 manually it works as well, so that couldn't explain
> the failure.
>
> I would expect the third command to work (write 0x0098 to address offset 0xAA).
>
> I'm at a loss here, did I overlook something in the configuration?
>
> Nicky Geerts
>
>
>
> defines in the config header:
> #define CFG_FLASH_BASE          0xFF000000
> #define CFG_FLASH_CFI 1
> #define CFG_FLASH_CFI_DRIVER 1
> #define CFG_FLASH_CFI_AMD_RESET 1
> #define CFG_FLASH_USE_BUFFER_WRITE      1
> #define CFG_MAX_FLASH_BANKS     1
> #define CFG_MAX_FLASH_SECT      256
> #define CFG_FLASH_ERASE_TOUT    120000
> #define CFG_FLASH_WRITE_TOUT    1000
>
> serial output:
> U-Boot 1.2.0 (Jun 25 2007 - 14:29:22)
>
> CPU:   AMCC PowerPC 405EP Rev. B at 266.666 MHz (PLB=133, OPB=66, EBC=33 MHz)
>        I2C boot EEPROM disabled
>        Internal PCI arbiter enabled
>        16 kB I-Cache 16 kB D-Cache
> Board: ###
> I2C:   ready
> DRAM:  64 MB
> Top of RAM usable for U-Boot at: 04000000
> Reserving 185k for U-Boot at: 03fd1000
> Reserving 384k for malloc() at: 03f71000
> Reserving 140 Bytes for Board Info at: 03f70f74
> Reserving 48 Bytes for Global Data at: 03f70f44
> Stack Pointer at: 03f70f28
> New Stack Pointer is: 03f70f28
> Now running in RAM - U-Boot at: 03fd1000
> FLASH: flash detect cfi
> fwc addr ff000000 cmd 0 0000 16bit x 8 bit
> fwc addr ff0000aa cmd 98 9898 16bit x 8 bit
> is= cmd 51(Q) addr ff000020 is= ffff 5151
> fwc addr ff000aaa cmd 98 9898 16bit x 8 bit
> is= cmd 51(Q) addr ff000020 is= ffff 5151
> fwc addr ff000000 cmd 0 0000 16bit x 16 bit
> fwc addr ff0000aa cmd 98 0098 16bit x 16 bit
> is= cmd 51(Q) addr ff000020 is= ffff 0051
> fwc addr ff000aaa cmd 98 0098 16bit x 16 bit
> is= cmd 51(Q) addr ff000020 is= ffff 0051
> fwc addr ff000000 cmd 0 00000000 32bit x 8 bit
> fwc addr ff000154 cmd 98 98989898 32bit x 8 bit
> is= cmd 51(Q) addr ff000040 is= ffffffff 51515151
> fwc addr ff001554 cmd 98 98989898 32bit x 8 bit
> is= cmd 51(Q) addr ff000040 is= ffffffff 51515151
> fwc addr ff000000 cmd 0 00000000 32bit x 16 bit
> fwc addr ff000154 cmd 98 00980098 32bit x 16 bit
> is= cmd 51(Q) addr ff000040 is= ffffffff 00510051
> fwc addr ff001554 cmd 98 00980098 32bit x 16 bit
> is= cmd 51(Q) addr ff000040 is= ffffffff 00510051
> fwc addr ff000000 cmd 0 00000000 32bit x 32 bit
> fwc addr ff000154 cmd 98 00000098 32bit x 32 bit
> is= cmd 51(Q) addr ff000040 is= ffffffff 00000051
> fwc addr ff001554 cmd 98 00000098 32bit x 32 bit
> is= cmd 51(Q) addr ff000040 is= ffffffff 00000051
> fwrite addr ff000000 cmd 0 0000000000000000 64 bit x 8 bit
> fwrite addr ff0002a8 cmd 98 9898989898989898 64 bit x 8 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 5151515151515151
> fwrite addr ff002aa8 cmd 98 9898989898989898 64 bit x 8 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 5151515151515151
> fwrite addr ff000000 cmd 0 0000000000000000 64 bit x 16 bit
> fwrite addr ff0002a8 cmd 98 0098009800980098 64 bit x 16 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0051005100510051
> fwrite addr ff002aa8 cmd 98 0098009800980098 64 bit x 16 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0051005100510051
> fwrite addr ff000000 cmd 0 0000000000000000 64 bit x 32 bit
> fwrite addr ff0002a8 cmd 98 0000009800000098 64 bit x 32 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0000005100000051
> fwrite addr ff002aa8 cmd 98 0000009800000098 64 bit x 32 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0000005100000051
> fwrite addr ff000000 cmd 0 0000000000000000 64 bit x 64 bit
> fwrite addr ff0002a8 cmd 98 0000000000000098 64 bit x 64 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0000000000000051
> fwrite addr ff002aa8 cmd 98 0000000000000098 64 bit x 64 bit
> is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0000000000000051
> not found
> ## Unknown FLASH on Bank 1 - Size = 0x00000000 = 0 MB
> flash_protect ON: from 0xFFFC0000 to 0xFFFE90FF
> flash_protect ON: from 0xFFF80000 to 0xFFF9FFFF
> flash_protect ON: from 0xFFFA0000 to 0xFFFBFFFF
> *** failed ***
> ### ERROR ### Please RESET the board ###
>