powerpc: Merge lmb.c and make MM initialization use it.

This also creates merged versions of do_init_bootmem, paging_init
and mem_init and moves them to arch/powerpc/mm/mem.c.  It gets rid
of the mem_pieces stuff.

I made memory_limit a parameter to lmb_enforce_memory_limit rather
than a global referenced by that function.  This will require some
small changes to ppc64 if we want to continue building ARCH=ppc64
using the merged lmb.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 11 insertions, 7 deletions

diff --git a/include/asm-ppc/page.h b/include/asm-ppc/page.h
index 4789dc024240..fc44f7ca62d7 100644
--- a/include/asm-ppc/page.h
+++ b/include/asm-ppc/page.h
@@ -34,6 +34,17 @@ typedef unsigned long pte_basic_t;
 #define PTE_FMT         "%.8lx"
 #endif
 
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr,size)    (((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr,size)  ((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr,size)     _ALIGN_UP(addr,size)
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)        _ALIGN(addr, PAGE_SIZE)
+
+
 #undef STRICT_MM_TYPECHECKS
 
 #ifdef STRICT_MM_TYPECHECKS
@@ -76,13 +87,6 @@ typedef unsigned long pgprot_t;
 
 #endif
 
-
-/* align addr on a size boundary - adjust address up if needed -- Cort */
-#define _ALIGN(addr,size)       (((addr)+(size)-1)&(~((size)-1)))
-
-/* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-
 struct page;
 extern void clear_pages(void *page, int order);
 static inline void clear_page(void *page) { clear_pages(page, 0); }