Hi Stefan,
In October 09 month, I had asked whether U-boot supports M29W128GH, a CFI compilant chip and I got a yes reply. Please refer below URL for reference.
http://www.mail-archive.com/u-boot@lists.denx.de/msg24531.html.
So I have used Uboot for my PPC440 based board.
When I flashed U-boot on flash and then run the Uboot in DDR then U-boot running on DDR fails to detect CFI chip M29W128GH (16M x 8 mode).
flash_detect_cfi function gives error that flash not found. I have added debug statements for temporary debug purpose. Please see the below error I am getting.
The CFI query address looks different in below code and not as per ST make M29W128GH specs. PCIMW.
static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry) { int cfi_offset; debug ("1__flash detect cfi\n"); /* We do not yet know what kind of commandset to use, so we issue the reset command in both Intel and AMD variants, in the hope that AMD flash roms ignore the Intel command. */ flash_write_cmd (info, 0, 0, AMD_CMD_RESET); flash_write_cmd (info, 0, 0, FLASH_CMD_RESET); debug ("2__flash detect cfi\n"); for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint); cfi_offset++) { flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI);
debug ("3__flash detect cfi\n"); if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP, sizeof(struct cfi_qry));
/* UART Output */
U-Boot 2009.08 (Jan 15 2010 - 16:44:40) DRAM: Meminfo.ptrCDBs: 0xc00174e0 512 MB (ECC is ON, 400 MHz, CL 7) Top of RAM usable for U-Boot at: 20000000 Reserving 174k for U-Boot at: 1ffd4000 Reserving 1040k for malloc() at: 1fed0000 Reserving 128 Bytes for Board Info at: 1fecff80 Reserving 64 Bytes for Global Data at: 1fecff40 Stack Pointer at: 1fecff28 New Stack Pointer is: 1fecff28 after watchdog reset after watchdog reset 2 after memcpy befor relocate addr_sp = 1fecff28, id = 1fecff40, addr = 1ffd4000 Now running in RAM - U-Boot at: 1ffd4000 FLASH: flash detect cfi 1__flash detect cfi fwc addr ff000000 cmd f0 f0 8bit x 8 bit Entering into First Write First Write is done fwc addr ff000000 cmd ff ff 8bit x 8 bit Entering into First Write First Write is done 2__flash detect cfi fwc addr ff000055 cmd 98 98 8bit x 8 bit Entering into First Write First Write is done 3__flash detect cfi is= cmd 51(Q) addr ff000010 is= ff 51 fwc addr ff000555 cmd 98 98 8bit x 8 bit Entering into First Write First Write is done 3__flash detect cfi is= cmd 51(Q) addr ff000010 is= ff 51 1__flash detect cfi fwc addr ff000000 cmd f0 f0f0 16bit x 8 bit fwc addr ff000000 cmd ff ffff 16bit x 8 bit 2__flash detect cfi fwc addr ff0000aa cmd 98 9898 16bit x 8 bit 3__flash detect cfi is= cmd 51(Q) addr ff000020 is= ffff 5151 fwc addr ff000aaa cmd 98 9898 16bit x 8 bit 3__flash detect cfi is= cmd 51(Q) addr ff000020 is= ffff 5151 1__flash detect cfi fwc addr ff000000 cmd f0 00f0 16bit x 16 bit fwc addr ff000000 cmd ff 00ff 16bit x 16 bit 2__flash detect cfi fwc addr ff0000aa cmd 98 0098 16bit x 16 bit 3__flash detect cfi is= cmd 51(Q) addr ff000020 is= ffff 0051 fwc addr ff000aaa cmd 98 0098 16bit x 16 bit 3__flash detect cfi is= cmd 51(Q) addr ff000020 is= ffff 0051 1__flash detect cfi fwc addr ff000000 cmd f0 f0f0f0f0 32bit x 8 bit fwc addr ff000000 cmd ff ffffffff 32bit x 8 bit 2__flash detect cfi fwc addr ff000154 cmd 98 98989898 32bit x 8 bit 3__flash detect cfi is= cmd 51(Q) addr ff000040 is= ffffffff 51515151 fwc addr ff001554 cmd 98 98989898 32bit x 8 bit 3__flash detect cfi is= cmd 51(Q) addr ff000040 is= ffffffff 51515151
1__flash detect cfi fwc addr ff000000 cmd f0 00f000f0 32bit x 16 bit fwc addr ff000000 cmd ff 00ff00ff 32bit x 16 bit 2__flash detect cfi fwc addr ff000154 cmd 98 00980098 32bit x 16 bit 3__flash detect cfi is= cmd 51(Q) addr ff000040 is= ffffffff 00510051 fwc addr ff001554 cmd 98 00980098 32bit x 16 bit 3__flash detect cfi is= cmd 51(Q) addr ff000040 is= ffffffff 00510051 1__flash detect cfi fwc addr ff000000 cmd f0 000000f0 32bit x 32 bit fwc addr ff000000 cmd ff 000000ff 32bit x 32 bit 2__flash detect cfi fwc addr ff000154 cmd 98 00000098 32bit x 32 bit 3__flash detect cfi is= cmd 51(Q) addr ff000040 is= ffffffff 00000051 fwc addr ff001554 cmd 98 00000098 32bit x 32 bit 3__flash detect cfi is= cmd 51(Q) addr ff000040 is= ffffffff 00000051
1__flash detect cfi fwrite addr ff000000 cmd f0 f0f0f0f0f0f0f0f0 64 bit x 8 bit fwrite addr ff000000 cmd ff ffffffffffffffff 64 bit x 8 bit 2__flash detect cfi fwrite addr ff0002a8 cmd 98 9898989898989898 64 bit x 8 bit 3__flash detect cfi is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 5151515151515151 fwrite addr ff002aa8 cmd 98 9898989898989898 64 bit x 8 bit 3__flash detect cfi is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 5151515151515151
1__flash detect cfi fwrite addr ff000000 cmd f0 00f000f000f000f0 64 bit x 16 bit fwrite addr ff000000 cmd ff 00ff00ff00ff00ff 64 bit x 16 bit 2__flash detect cfi fwrite addr ff0002a8 cmd 98 0098009800980098 64 bit x 16 bit 3__flash detect cfi is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0051005100510051 fwrite addr ff002aa8 cmd 98 0098009800980098 64 bit x 16 bit 3__flash detect cfi is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0051005100510051
1__flash detect cfi fwrite addr ff000000 cmd f0 000000f0000000f0 64 bit x 32 bit fwrite addr ff000000 cmd ff 000000ff000000ff 64 bit x 32 bit 2__flash detect cfi fwrite addr ff0002a8 cmd 98 0000009800000098 64 bit x 32 bit 3__flash detect cfi is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0000005100000051 fwrite addr ff002aa8 cmd 98 0000009800000098 64 bit x 32 bit 3__flash detect cfi is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0000005100000051
1__flash detect cfi fwrite addr ff000000 cmd f0 00000000000000f0 64 bit x 64 bit fwrite addr ff000000 cmd ff 00000000000000ff 64 bit x 64 bit 2__flash detect cfi fwrite addr ff0002a8 cmd 98 0000000000000098 64 bit x 64 bit 3__flash detect cfi is= cmd 51(Q) addr ff000080 is= ffffffffffffffff 0000000000000051 fwrite addr ff002aa8 cmd 98 0000000000000098 64 bit x 64 bit 3__flash detect cfi 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 0xFFFE8AFF flash_protect ON: from 0xFFFA0000 to 0xFFFBFFFF *** failed *** ### ERROR ### Please RESET the board ###
What should be the cause. It would be really helpful if someone who have face this kind of issues can give some inputs.
TIA.
Regards, Prakash