[U-Boot] some dead code and redundant files for nios?

[Robert P. J. Day <rpjday@crashcourse.ca>]

On Fri, 1 Feb 2013, Robert P. J. Day wrote:

> ... the same source file -- AMDLV065D.c -- is in two different
> directories, and they differ slightly:
>
> $ diff board/{altera,psyent}/common/AMDLV065D.c
> 175c175
> < 		writeb (b, dst);
> ---
> > 		writeb (dst, b);
> $
>
>   that looks kind of weird, doesn't it?  i haven't looked any more
> closely but for two source files with the same name to have that
> single, subtle difference just looks strange.

  i took a couple minutes with "git blame" to discover this:

$ git show 3d22d0b8
diff --git a/board/psyent/common/AMDLV065D.c b/board/psyent/common/AMDLV065D.c
... snip ...
-               *cmd = 0xaa;
-               *cmd = 0x55;
-               *cmd = 0xa0;
-               *dst = b;
+               writeb (cmd,  0xaa);
+               writeb (cmd,  0x55);
+               writeb (cmd,  0xa0);
+               writeb (dst, b);
... snip ...

  while over in the (almost) identical file:

git show 9e486ab1
commit 9e486ab1c98ea7ab357520307fe5d5a0847cd1bb
Author: Scott McNutt <smcnutt@psyent.com>
Date:   Tue Mar 30 20:26:15 2010 -0400

    nios2: Fix AMDLV065D flash write bug in altera board common tree.

    Signed-off-by: Scott McNutt <smcnutt@psyent.com>

diff --git a/board/altera/common/AMDLV065D.c b/board/altera/common/AMDLV065D.c
index 72b0a9f..7a1b4d3 100644
--- a/board/altera/common/AMDLV065D.c
+++ b/board/altera/common/AMDLV065D.c
@@ -172,7 +172,7 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
                writeb (0xaa, cmd);
                writeb (0x55, cmd);
                writeb (0xa0, cmd);
-               writeb (dst, b);
+               writeb (b, dst);

                /* Verify write */
                start = get_timer (0);
$

  i don't know what the above is doing, but it would certainly seem
that if a flash write bug was being fixed in one of those files, it
would be fixed in the other.  beyond that, i cannot say.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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