Merge branch 'master' of git://git.denx.de/u-boot-nios

4 files changed, 17 insertions, 13 deletions

diff --git a/arch/nios2/cpu/cpu.c b/arch/nios2/cpu/cpu.c
index ff0fa20..f6d5cd3 100644
--- a/arch/nios2/cpu/cpu.c
+++ b/arch/nios2/cpu/cpu.c
@@ -117,7 +117,9 @@ static int altera_nios2_probe(struct udevice *dev)
 		"altr,has-initda", 0);
 	gd->arch.has_mmu = fdtdec_get_int(blob, node,
 		"altr,has-mmu", 0);
-	gd->arch.io_region_base = gd->arch.has_mmu ? 0xe0000000 : 0x8000000;
+	gd->arch.io_region_base = gd->arch.has_mmu ? 0xe0000000 : 0x80000000;
+	gd->arch.mem_region_base = gd->arch.has_mmu ? 0xc0000000 : 0x00000000;
+	gd->arch.physaddr_mask = gd->arch.has_mmu ? 0x1fffffff : 0x7fffffff;
 
 	return 0;
 }
diff --git a/arch/nios2/cpu/start.S b/arch/nios2/cpu/start.S
index 8758e7e..54787c5 100644
--- a/arch/nios2/cpu/start.S
+++ b/arch/nios2/cpu/start.S
@@ -81,6 +81,7 @@ _cur:	movhi	r5, %hi(_cur - _start)
 	mov	r8, r4
 	movhi	r5, %hi(_start)
 	ori	r5, r5, %lo(_start)	/* r5 <- linked _start */
+	mov	sp, r5		/* initial stack below u-boot code */
 	beq	r4, r5, 3f
 
 	movhi	r6, %hi(CONFIG_SYS_MONITOR_LEN)
@@ -100,8 +101,6 @@ _cur:	movhi	r5, %hi(_cur - _start)
 _reloc:
 
 	/* STACK INIT -- zero top two words for call back chain. */
-	movhi	sp, %hi(CONFIG_SYS_INIT_SP)
-	ori	sp, sp, %lo(CONFIG_SYS_INIT_SP)
 	addi	sp, sp, -8
 	stw	r0, 0(sp)
 	stw	r0, 4(sp)
@@ -159,7 +158,7 @@ relocate_code:
 	ori	r6, r6, %lo(__bss_end)
 	beq	r5, r6, 5f
 
-4:	stwio	r0, 0(r5)
+4:	stw	r0, 0(r5)
 	addi	r5, r5, 4
 	bne	r5, r6, 4b
 5:
diff --git a/arch/nios2/include/asm/global_data.h b/arch/nios2/include/asm/global_data.h
index d6a2cfa..9863fd9 100644
--- a/arch/nios2/include/asm/global_data.h
+++ b/arch/nios2/include/asm/global_data.h
@@ -18,6 +18,8 @@ struct arch_global_data {
 	int has_initda;
 	int has_mmu;
 	u32 io_region_base;
+	u32 mem_region_base;
+	u32 physaddr_mask;
 };
 
 #include <asm-generic/global_data.h>
diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h
index e7da35b..03a3418 100644
--- a/arch/nios2/include/asm/io.h
+++ b/arch/nios2/include/asm/io.h
@@ -18,15 +18,19 @@ static inline void sync(void)
  * that can be used to access the memory range with the caching
  * properties specified by "flags".
  */
-#define MAP_NOCACHE	(0)
-#define MAP_WRCOMBINE	(0)
-#define MAP_WRBACK	(0)
-#define MAP_WRTHROUGH	(0)
+#define MAP_NOCACHE	1
+#define MAP_WRCOMBINE	0
+#define MAP_WRBACK	0
+#define MAP_WRTHROUGH	0
 
 static inline void *
 map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
 {
-	return (void *)paddr;
+	DECLARE_GLOBAL_DATA_PTR;
+	if (flags)
+		return (void *)(paddr | gd->arch.io_region_base);
+	else
+		return (void *)(paddr | gd->arch.mem_region_base);
 }
 
 /*
@@ -40,10 +44,7 @@ static inline void unmap_physmem(void *vaddr, unsigned long flags)
 static inline phys_addr_t virt_to_phys(void * vaddr)
 {
 	DECLARE_GLOBAL_DATA_PTR;
-	if (gd->arch.has_mmu)
-		return (phys_addr_t)vaddr & 0x1fffffff;
-	else
-		return (phys_addr_t)vaddr & 0x7fffffff;
+	return (phys_addr_t)vaddr & gd->arch.physaddr_mask;
 }
 
 static inline void *ioremap(unsigned long physaddr, unsigned long size)