Rationale:
The upcoming Beagle xM, unlike previous Beagles, has no on-board NAND.
I'd like to continue to have a single version of u-boot that works for all version of Beagles. Therefore I need to have env_nand fail gracefully when it runs on the xM.
The patch below does the job, but I am not sure that my method of checking for the existence of nand (nand_info[0].type = 0 when no nand detected) is "correct"? Any opinions or advice?
Steve
---
diff --git a/common/env_nand.c b/common/env_nand.c index a15a950..325f112 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -268,6 +268,10 @@ int readenv (size_t offset, u_char * buf)
u_char *char_ptr;
+ /* fail if no nand detected */ + if (nand_info[0].type == 0) + return 1; + blocksize = nand_info[0].erasesize; len = min(blocksize, CONFIG_ENV_SIZE);