[PATCH 2/2] Add MIPS arch support to barebox

[Antony Pavlov]

On 28/06/2011, Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com> wrote:
> On 21:13 Mon 27 Jun     , Antony Pavlov wrote:
>> Only supported board is qemu malta:
>>   * barebox works in uncached memory;
>>   * no peripherals support, but serial port.
>
> please take a look on here
> http://git.jcrosoft.org/git?p=barebox.git;a=shortlog;h=refs/heads/mips
>
> the work start by Shinya Kuribayashi to support mips and barebox
>
> maybe you can merge both
>

I took a look on it.

I can build 'qemu' target with default config, but I can't see
any output in emulator.

I can't even build 'malta' target with default config.

Is it runnable at all?

I think, that Shinya's concepts can be used in the future, but they
are very complex for initial mips support.

IMHO, the Shinya's code is redundant (> 200K ) --- initial support
must be as small as possible.

The file Kconfig is overcomplicated. Many variables are really unused:
 DMA_NONCOHERENT,
 SWAP_IO_SPACE
 HW_HAS_PCI
 SYS_SUPPORTS_{32,64}BIT_KERNEL
 SYS_SUPPORTS_ARBIT_HZ
  and others

In other hand the options ARCH_TEXT_BASE and CPU_BIG_ENDIAN are useful
just now, but I have missed them.

But now I see, that I can make my mips support better --- split big
patch and make some parts of code configurable.

-- 
Best regards,
  Antony Pavlov