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authorFranck Bui-Huu <vagabon.xyz@gmail.com>2006-10-19 15:20:00 +0400
committerRalf Baechle <ralf@linux-mips.org>2006-11-30 04:14:41 +0300
commit620a4802be8ee7989b1b6684b7198ebae02af854 (patch)
tree4ded5391f23ab02cddcd9d40c3017340c9af027d /include/asm-mips
parent99e3b942c62f42c8d5added63305e12372b06daf (diff)
downloadlinux-620a4802be8ee7989b1b6684b7198ebae02af854.tar.xz
[MIPS] Make __pa() aware of XKPHYS/CKSEG0 address mix for 64 bit kernels
During early boot mem init, some configs couldn't use __pa() to convert virtual into physical addresses. Specially for 64 bit kernel cases when CONFIG_BUILD_ELF64=n. This patch make __pa() work for _all_ configs and thus make CPHYSADDR() useless. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips')
-rw-r--r--include/asm-mips/page.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index edb33a14ae9e..c3b13dedf21a 100644
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -136,8 +136,13 @@ typedef struct { unsigned long pgprot; } pgprot_t;
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
-#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
-#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
+#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
+#define __pa_page_offset(x) ((unsigned long)(x) < CKSEG0 ? PAGE_OFFSET : CKSEG0)
+#else
+#define __pa_page_offset(x) PAGE_OFFSET
+#endif
+#define __pa(x) ((unsigned long)(x) - __pa_page_offset(x))
+#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)