---

yaml --- r: 279724 b: refs/heads/master c: 88be351 h: refs/heads/master v: v3
git-mirror · Dec 30, 2011 · 1af431e · 1af431e
1 parent ada4401
commit 1af431e
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Showing 4 changed files with 52 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0079fe7502b45c2dbec6d04541e637484191c393
+refs/heads/master: 88be3515934004d271398129ba7145635e95127e
diff --git a/trunk/arch/m68k/include/asm/page.h b/trunk/arch/m68k/include/asm/page.h
@@ -36,6 +36,10 @@ typedef struct page *pgtable_t;
 #define __pgd(x)	((pgd_t) { (x) } )
 #define __pgprot(x)	((pgprot_t) { (x) } )
 
+extern unsigned long _rambase;
+extern unsigned long _ramstart;
+extern unsigned long _ramend;
+
 #endif /* !__ASSEMBLY__ */
 
 #ifdef CONFIG_MMU

diff --git a/trunk/arch/m68k/include/asm/page_no.h b/trunk/arch/m68k/include/asm/page_no.h
@@ -5,9 +5,6 @@
 
 extern unsigned long memory_start;
 extern unsigned long memory_end;
-extern unsigned long _rambase;
-extern unsigned long _ramstart;
-extern unsigned long _ramend;
 
 #define get_user_page(vaddr)		__get_free_page(GFP_KERNEL)
 #define free_user_page(page, addr)	free_page(addr)

diff --git a/trunk/arch/m68k/platform/54xx/config.c b/trunk/arch/m68k/platform/54xx/config.c
@@ -13,11 +13,17 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <asm/pgalloc.h>
 #include <asm/machdep.h>
 #include <asm/coldfire.h>
 #include <asm/m54xxsim.h>
 #include <asm/mcfuart.h>
 #include <asm/m54xxgpt.h>
+#ifdef CONFIG_MMU
+#include <asm/mmu_context.h>
+#endif
 
 /***************************************************************************/
 
@@ -95,8 +101,49 @@ static void mcf54xx_reset(void)
 
 /***************************************************************************/
 
+#ifdef CONFIG_MMU
+
+unsigned long num_pages;
+
+static void __init mcf54xx_bootmem_alloc(void)
+{
+	unsigned long start_pfn;
+	unsigned long memstart;
+
+	/* _rambase and _ramend will be naturally page aligned */
+	m68k_memory[0].addr = _rambase;
+	m68k_memory[0].size = _ramend - _rambase;
+
+	/* compute total pages in system */
+	num_pages = (_ramend - _rambase) >> PAGE_SHIFT;
+
+	/* page numbers */
+	memstart = PAGE_ALIGN(_ramstart);
+	min_low_pfn = _rambase >> PAGE_SHIFT;
+	start_pfn = memstart >> PAGE_SHIFT;
+	max_low_pfn = _ramend >> PAGE_SHIFT;
+	high_memory = (void *)_ramend;
+
+	m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6;
+	module_fixup(NULL, __start_fixup, __stop_fixup);
+
+	/* setup bootmem data */
+	m68k_setup_node(0);
+	memstart += init_bootmem_node(NODE_DATA(0), start_pfn,
+		min_low_pfn, max_low_pfn);
+	free_bootmem_node(NODE_DATA(0), memstart, _ramend - memstart);
+}
+
+#endif /* CONFIG_MMU */
+
+/***************************************************************************/
+
 void __init config_BSP(char *commandp, int size)
 {
+#ifdef CONFIG_MMU
+	mcf54xx_bootmem_alloc();
+	mmu_context_init();
+#endif
 	mach_reset = mcf54xx_reset;
 	m54xx_uarts_init();
 }