1 files changed, 21 insertions, 27 deletions

diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index c93a966b7e4b..ce10e2b1b902 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -49,18 +49,15 @@
 #include <asm/mmu.h>
 #include <asm/uaccess.h>
 #include <asm/smp.h>
-#include <asm/bootx.h>
 #include <asm/machdep.h>
 #include <asm/setup.h>
 
+#include "mmu_decl.h"
+
 extern void loadcam_entry(unsigned int index);
 unsigned int tlbcam_index;
 unsigned int num_tlbcam_entries;
 static unsigned long __cam0, __cam1, __cam2;
-extern unsigned long total_lowmem;
-extern unsigned long __max_low_memory;
-extern unsigned long __initial_memory_limit;
-#define MAX_LOW_MEM	CONFIG_LOWMEM_SIZE
 
 #define NUM_TLBCAMS	(16)
 
@@ -165,15 +162,15 @@ void invalidate_tlbcam_entry(int index)
 void __init cam_mapin_ram(unsigned long cam0, unsigned long cam1,
 		unsigned long cam2)
 {
-	settlbcam(0, PAGE_OFFSET, PPC_MEMSTART, cam0, _PAGE_KERNEL, 0);
+	settlbcam(0, PAGE_OFFSET, memstart_addr, cam0, _PAGE_KERNEL, 0);
 	tlbcam_index++;
 	if (cam1) {
 		tlbcam_index++;
-		settlbcam(1, PAGE_OFFSET+cam0, PPC_MEMSTART+cam0, cam1, _PAGE_KERNEL, 0);
+		settlbcam(1, PAGE_OFFSET+cam0, memstart_addr+cam0, cam1, _PAGE_KERNEL, 0);
 	}
 	if (cam2) {
 		tlbcam_index++;
-		settlbcam(2, PAGE_OFFSET+cam0+cam1, PPC_MEMSTART+cam0+cam1, cam2, _PAGE_KERNEL, 0);
+		settlbcam(2, PAGE_OFFSET+cam0+cam1, memstart_addr+cam0+cam1, cam2, _PAGE_KERNEL, 0);
 	}
 }
 
@@ -196,35 +193,32 @@ unsigned long __init mmu_mapin_ram(void)
 void __init
 adjust_total_lowmem(void)
 {
-	unsigned long max_low_mem = MAX_LOW_MEM;
-	unsigned long cam_max = 0x10000000;
-	unsigned long ram;
+	phys_addr_t max_lowmem_size = __max_low_memory;
+	phys_addr_t cam_max_size = 0x10000000;
+	phys_addr_t ram;
 
-	/* adjust CAM size to max_low_mem */
-	if (max_low_mem < cam_max)
-		cam_max = max_low_mem;
+	/* adjust CAM size to max_lowmem_size */
+	if (max_lowmem_size < cam_max_size)
+		cam_max_size = max_lowmem_size;
 
-	/* adjust lowmem size to max_low_mem */
-	if (max_low_mem < total_lowmem)
-		ram = max_low_mem;
-	else
-		ram = total_lowmem;
+	/* adjust lowmem size to max_lowmem_size */
+	ram = min(max_lowmem_size, (phys_addr_t)total_lowmem);
 
 	/* Calculate CAM values */
 	__cam0 = 1UL << 2 * (__ilog2(ram) / 2);
-	if (__cam0 > cam_max)
-		__cam0 = cam_max;
+	if (__cam0 > cam_max_size)
+		__cam0 = cam_max_size;
 	ram -= __cam0;
 	if (ram) {
 		__cam1 = 1UL << 2 * (__ilog2(ram) / 2);
-		if (__cam1 > cam_max)
-			__cam1 = cam_max;
+		if (__cam1 > cam_max_size)
+			__cam1 = cam_max_size;
 		ram -= __cam1;
 	}
 	if (ram) {
 		__cam2 = 1UL << 2 * (__ilog2(ram) / 2);
-		if (__cam2 > cam_max)
-			__cam2 = cam_max;
+		if (__cam2 > cam_max_size)
+			__cam2 = cam_max_size;
 		ram -= __cam2;
 	}
 
@@ -232,6 +226,6 @@ adjust_total_lowmem(void)
 			" CAM2=%ldMb residual: %ldMb\n",
 			__cam0 >> 20, __cam1 >> 20, __cam2 >> 20,
 			(total_lowmem - __cam0 - __cam1 - __cam2) >> 20);
-	__max_low_memory = max_low_mem = __cam0 + __cam1 + __cam2;
-	__initial_memory_limit = __max_low_memory;
+	__max_low_memory = __cam0 + __cam1 + __cam2;
+	__initial_memory_limit_addr = memstart_addr + __max_low_memory;
 }