In message 20040107215219.40742.qmail@web41413.mail.yahoo.com you wrote:
I am porting U-Boot over to a new product running an MPC855T processor, 512KB of flash, 16MB of SDRAM, and a 32KB Simtek NVRAM. I have the board booting up to the point where it tries to read the baudrate for the
Remember that at this time there is just the (small) stack: no writable data segment, no standard C global data.
RS-232 port (init_baudrate). When it goes into the getenv_r function from within init_baudrate, it seems to eventually crash before it comes back with an answer. The system seems to read from the NVRAM fine when it boots and runs crc32 on it. It also crashes if I change CFG_ENV_SIZE to 0x4 and force it to read
Ummm... an environment size of 0x4 = 4 Bytes??? Are you sure??
the default values (env_get_char_init). Does anyone have any ideas as to what can be causing this? I'm going to keep poking around myself, but I just wanted to see if anyone else has had a problem like this while porting U-Boot.
For a start, put the environment in flash. (It's probably more reliable anyway as you can configure for redundand storage).
Best regards,
Wolfgang Denk