[U-Boot] CFG_64BIT_xxx and friends

Matthias Fuchs matthias.fuchs at esd-electronics.com
Thu Sep 4 16:09:26 CEST 2008


Hi all,

after testing the recent U-Boot code on a couple of 405EP boards I noticed,
that the memsize in the output of the "bdinfo" command is always 0x00000000.

This is caused by using 64 types and format directives in printf that only 
work when CFG_64BIT_VSPRINTF is defined.

So what's the best way to fix this?
Here are four solutions. My favorite is no. 2.

1) Define CFG_64BIT_STRTOUL for all effected board. 
Currently all 405 boards have memsize output as 0 in bdinfo.

2) Define CFG_64BIT_VSPRINTF and CFG_64BIT_STRTOUL for all 4xx boards in
include/ppc4xx.h:

diff --git a/include/ppc4xx.h b/include/ppc4xx.h
index 59a3b06..f0dfa38 100644
--- a/include/ppc4xx.h
+++ b/include/ppc4xx.h
@@ -102,13 +102,14 @@

 #endif /* 440EP/EPX 440GR/GRX 440SP/SPE 460EX/GT/SX 405EX*/

-#if defined(CONFIG_440)
 /*
  * Enable long long (%ll ...) printf format on 440 PPC's since most of
  * them support 36bit physical addressing
  */
 #define CFG_64BIT_VSPRINTF
 #define CFG_64BIT_STRTOUL
+
+#if defined(CONFIG_440)
 #include <ppc440.h>
 #else
 #include <ppc405.h>

3) Generally define CFG_64BIT_VSPRINTF and CFG_64BIT_STRTOUL for all boards.

4) Use an (ugly) workaround in common/cmd_bdinfo.c:

static void print_lnum(const char *name, u64 value)
{
#ifdef CFG_64BIT_VSPRINTF
	printf ("%-12s= 0x%.8llX\n", name, value);
#else
	u32 *value32 = (u32*)&value;
	if (value32[0])
		printf ("%-12s= 0x%lX%.8lX\n", name, value32[0], value32[1]);
	else
		printf ("%-12s= 0x%.8lX\n", name, value32[1]);
#endif
}


So what do you think?

Matthias


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