[U-Boot] [PATCH] nios2: reset cfi flash before reading env

[Wolfgang Denk <wd@denx.de>]

Dear Thomas Chou,

In message <4D252AAB.6040308@wytron.com.tw> you wrote:
>
> > Instead of making fixed assumptions about flash type and it's
> > properties here you should use generic routines from the CFI driver to
> > do the reset.
...
> env_init() goes before flash_init() in board.c. So we don't know the 
> flash type and cannot use those generic cfi routines based on flash_info.
> 
> I followed this in cfi_flash.c
> 
> void __flash_cmd_reset(flash_info_t *info)

I recommend you have a second, closer look. Notice that
flash_cmd_reset() comes with __attribute__ weak, because it does not
work as a general solution - it may work here, but other code may be
needed on other flash chips.

Your code does not provide such an option.

Best regards,

Wolfgang Denk

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