[U-Boot] [PATCH 5/5] New implementation for internal handling of environment variables.

[Wolfgang Denk <wd@denx.de>]

Dear Kim,

In message <20100720190112.3F435153A7F@gemini.denx.de> I wrote:
> 
> What we see here is in the pre-relocation phase, where we are still
> parsing the original, in-flash copy of the stringified environment.
> What is strange is that this seems to have worked when accessing
> "baudrate" (either because the environment was found, or because the
> default environment was used), but is stopping here.

I think the problem is that before relocation we have to use
getenv_r(), which is done for example to read the baudrate, see
arch/powerpc/lib/board.c: init_baudrate()

However, some boards also use getenv() before relocation. I just found
for example that the Sequoia board does this (before relocation):

"board/amcc/sequoia/sequoia.c":

330 int checkboard(void)
331 {
332         char *s = getenv("serial#");
333         u8 rev;
334         u32 clock = get_async_pci_freq();
335
336 #ifdef CONFIG_440EPX
337         printf("Board: Sequoia - AMCC PPC440EPx Evaluation Board");
338 #else
339         printf("Board: Rainier - AMCC PPC440GRx Evaluation Board");
340 #endif
...

and as one can expect the board crashes before printing the board
information.

I'm considering a way to eliminate getenv_r() (at the cost of
providing some static buffer in the global data area?).

[Comments? Ideas?]


However, I cannot see any gentenv() use before relocation for your
board, so the problem there is still unclear. I think I need your
help to debug this...



Best regards,

Wolfgang Denk

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