Hello all,
I am fairly new to U-Boot, and I want to perform memory and UART tests on the
ARM-based NXP LX2160A Reference Design Board using U-Boot. In doing research I
discovered the POST tests, but it seems that these are intended for
MPC823E-based boards. Is it possible/feasible to use POST to perform my tests,
or is there a better way? (I am aware of the mtest command for memory but I
would like to find something better, plus this doesn't help with UART.)
I have done a little work on the POST code, so if using POST is a viable
option, here are some questions I have regarding it:
If I #define CONFIG_POST in include/configs/lx2160ardb.h and build U-Boot, I
receive errors that _POST_WORD_ADDR is not defined. In looking at
include/post.h, it appears that to fix this I must have
CONFIG_SYS_POST_WORD_ADDR defined in lx2160ardb.h with some value. If I
#define CONFIG_SYS_POST_WORD_ADDR 0x10 in lx2160ardb.h, where 0x10 is just some
dummy value, U-Boot builds with no errors, but like I said it's just a dummy
value and I know it can't be used. I don't know what exactly _POST_WORD_ADDR
and CONFIG_SYS_POST_WORD_ADDR do or what value I should use. Am I going about
this in the right way, and if so where should I get the value to use for
CONFIG_SYS_POST_WORD_ADDR?
FWIW, this piece of code found in include/post.h is what I'm mainly looking at:
#ifndef CONFIG_POST_EXTERNAL_WORD_FUNCS
#ifdef CONFIG_SYS_POST_WORD_ADDR
#define _POST_WORD_ADDR CONFIG_SYS_POST_WORD_ADDR
#else
#if defined(CONFIG_ARCH_MPC8360)
#include <linux/immap_qe.h>
#define _POST_WORD_ADDR (CONFIG_SYS_IMMR + CPM_POST_WORD_ADDR)
#elif defined (CONFIG_MPC85xx)
#include <asm/immap_85xx.h>
#define _POST_WORD_ADDR (CONFIG_SYS_IMMR + CONFIG_SYS_MPC85xx_PIC_OFFSET +
\
offsetof(ccsr_pic_t, tfrr))
#elif defined (CONFIG_MPC86xx)
#include <asm/immap_86xx.h>
#define _POST_WORD_ADDR (CONFIG_SYS_IMMR + CONFIG_SYS_MPC86xx_PIC_OFFSET +
\
offsetof(ccsr_pic_t, tfrr))
#endif
#ifndef _POST_WORD_ADDR
#error "_POST_WORD_ADDR currently not implemented for this platform!"
#endif
#endif /* CONFIG_SYS_POST_WORD_ADDR */
Thank you :)
-Lewis
