Kumba wrote:
peter fuerst wrote:
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 <post@xxxxxxxx>
========================================================================
Of course, "#define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET)" is also needed.
kind regards
peter
Hmm, I can't find where PHYS_OFFSET is defined for mips. A grep shows
it mostly existing for the arm arch. Is there an alternative macro
available, or is this something that needs porting over?
--Kumba
Ah, duh. PHYS_OFFSET was introduced post-2.6.20, so I won't be able to leverage
this w/o backporting.
--Kumba
--
Gentoo/MIPS Team Lead
"Such is oft the course of deeds that move the wheels of the world: small hands
do them because they must, while the eyes of the great are elsewhere." --Elrond
