u-boot without flash device

Altera_Forum · ‎12-17-2010

Is there any way to skip the flash check on the beginning of u-boot ??

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U-Boot 2009.03-00006-g3387a3e-dirty (Dec 17 2010 - 15:42:36)

CPU : Nios-II

SYSID : <unknown>

BOARD : My Board# # Unknown FLASH on Bank 1 - Size = 0x00000000 = 0 MB

*** ERROR: unimplemented instruction @ f2fd00a0# ## ERROR# ## Please reset board# ##

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Since I do not have any CFI-Flash, it failing.

CFG_NO_FLASH option did not work.

CONFIG_ENV_IS_NOWHERE option did not work.

Altera_Forum · ‎12-18-2010

Solved.

define config_sys_no_flash

do not define config_flash_cfi_driver

do not define config_cmd_flash (undefine it if necessary

do not define config_cmd_imls (undefine it if necessary)

You may still see error in compilation.

Go to u-boot/lib_nios2/board.c

around line 155, comment out the line

//bd->bi_flashsize = flash_init();

At least, this will give you a command prompt of the u-boot.

Or simply the board.c file should use# ifdef to process this line.

1 more thing. If you are using the config_cmd_default, then...

In side of u-boot/include/config_cmd_default.h

around line 25, comment out# define CONFIG_CMD_FLASH

Altera_Forum · ‎12-19-2010

It seems like this issue was cause by using older version of u-boot.

I was using 20090730 version.

In the new version, 20100621, this issue has been fixed.