sh: Add support 32-bit physical addressing by other method

index c16ccd4..d7ff2af 100644
@@ -34,8 +34,10 @@ $(obj)/compressed/vmlinux: FORCE
 	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
 
 ifeq ($(CONFIG_32BIT),y)
+ifeq ($(CONFIG_FIXED_PMB),y)
 KERNEL_LOAD	:= $(shell /bin/bash -c 'printf "0x%08x" \
 		     $$[$(CONFIG_PAGE_OFFSET)  + \
+			($(CONFIG_MEMORY_START) & 0x1fffffff) + \
 			$(CONFIG_ZERO_PAGE_OFFSET)]')
 else
 KERNEL_LOAD	:= $(shell /bin/bash -c 'printf "0x%08x" \

@@ -43,11 +45,24 @@ KERNEL_LOAD	:= $(shell /bin/bash -c 'printf "0x%08x" \
 			$(CONFIG_MEMORY_START) + \
 			$(CONFIG_ZERO_PAGE_OFFSET)]')
 endif
+else
+KERNEL_LOAD	:= $(shell /bin/bash -c 'printf "0x%08x" \
+		     $$[$(CONFIG_PAGE_OFFSET)  + \
+			$(CONFIG_MEMORY_START) + \
+			$(CONFIG_ZERO_PAGE_OFFSET)]')
+endif
 
+ifeq ($(CONFIG_FIXED_PMB),y)
+KERNEL_ENTRY	:= $(shell /bin/bash -c 'printf "0x%08x" \
+		     $$[$(CONFIG_PAGE_OFFSET)  + \
+			($(CONFIG_MEMORY_START) & 0x1fffffff) + \
+			$(CONFIG_ZERO_PAGE_OFFSET) + $(CONFIG_ENTRY_OFFSET)]')
+else
 KERNEL_ENTRY	:= $(shell /bin/bash -c 'printf "0x%08x" \
 		     $$[$(CONFIG_PAGE_OFFSET)  + \
 			$(CONFIG_MEMORY_START) + \
 			$(CONFIG_ZERO_PAGE_OFFSET) + $(CONFIG_ENTRY_OFFSET)]')
+endif
 
 quiet_cmd_uimage = UIMAGE  $@
       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A sh -O linux -T kernel \

index 7b4b82b..69fe954 100644
@@ -15,8 +15,11 @@ OUTPUT_ARCH(sh)
 ENTRY(_start)
 SECTIONS
 {
-#ifdef CONFIG_32BIT
-	. = CONFIG_PAGE_OFFSET + CONFIG_ZERO_PAGE_OFFSET;
+#ifdef CONFIG_FIXED_PMB
+	. = CONFIG_PAGE_OFFSET + (CONFIG_MEMORY_START & 0x1fffffff) +
+	    CONFIG_ZERO_PAGE_OFFSET;
+#elif defined(CONFIG_32BIT)
+	. = CONFIG_PAGE_OFFSET + CONFIG_MEMORY_START + CONFIG_ZERO_PAGE_OFFSET;
 #else
 	. = CONFIG_PAGE_OFFSET + CONFIG_MEMORY_START + CONFIG_ZERO_PAGE_OFFSET;
 #endif

index 555ec97..8e1b6cf 100644
@@ -57,8 +57,8 @@ config 32BIT
 	bool
 	default y if CPU_SH5
 
-config PMB
-	bool "Support 32-bit physical addressing through PMB"
+config PMB_ENABLE
+	bool "Support 32-bit physical addresing through PMB"
 	depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
 	select 32BIT
 	default y

@@ -67,6 +67,34 @@ config PMB
 	  32-bits through the SH-4A PMB. If this is not set, legacy
 	  29-bit physical addressing will be used.
 
+choice
+	prompt "PMB handling type"
+	depends on PMB_ENABLE
+	default FIXED_PMB
+
+config PMB
+	bool "PMB"
+	depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
+	select 32BIT
+	help
+	  If you say Y here, physical addressing will be extended to
+	  32-bits through the SH-4A PMB. If this is not set, legacy
+	  29-bit physical addressing will be used.
+
+config FIXED_PMB
+	bool "fixed PMB"
+	depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7780 || \
+					   CPU_SUBTYPE_SH7785)
+	select 32BIT
+	help
+	  If this option is enable, PMB is fixed (extract cache type
+	  setting). You should set up PMB by boot loader beforehand.
+	  P1/P2 area is handled like a 29-bit physical addressing,
+	  and local bus devices are assigned P3 area. So you can use
+	  512Mbyte or less system memory.
+
+endchoice
+
 config X2TLB
 	bool "Enable extended TLB mode"
 	depends on (CPU_SHX2 || CPU_SHX3) && MMU && EXPERIMENTAL

index cb2f3f2..48606d9 100644
@@ -35,6 +35,7 @@ endif
 
 obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
 obj-$(CONFIG_PMB)		+= pmb.o
+obj-$(CONFIG_FIXED_PMB)		+= fixed_pmb.o
 obj-$(CONFIG_NUMA)		+= numa.o
 
 EXTRA_CFLAGS += -Werror