Re: IP32 prom crashes due to __pa() funkiness

Hi!

Did you try to use PHYS_OFFSET > 0 ?  __pa() ist still (as of
d3fbd83ff545e49e2a0a5ca0f00dda4eedaf8be7) defined as (casts omitted):

#define __pa(x) (x - (x < CKSEG0 ? PAGE_OFFSET:CKSEG0) + PHYS_OFFSET)

This gives __pa(CKSEG0) == PHYS_OFFSET, which will never work for
PHYS_OFFSET > 0. A quick fix (assuming this was the cause for failure)
could be:

========================================================================

--- d3fbd83ff545e49e2a0a5ca0f00dda4eedaf8be7/include/asm-mips/page.h	Sat Mar 10 08:43:17 2007
+++ quickfix/include/asm-mips/page.h	Sun Mar 18 10:24:34 2007

@@ -150,7 +150,7 @@ typedef struct { unsigned long pgprot; }
  * __pa()/__va() should be used only during mem init.
  */
 #if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
-#define __pa_page_offset(x)	((unsigned long)(x) < CKSEG0 ? PAGE_OFFSET : CKSEG0)
+#define __pa_page_offset(x)	((unsigned long)(x) < CKSEG0 ? PAGE_OFFSET : CKSEG0+PHYS_OFFSET)
 #else
 #define __pa_page_offset(x)	PAGE_OFFSET
 #endif

Signed-off-by: peter fuerst <redacted>

========================================================================

Of course, "#define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET)" is also needed.

kind regards

peter