h8300 update for v4.4

some bug fix.
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Merge tag 'for-4.4' of git://git.osdn.jp/gitroot/uclinux-h8/linux

Pull h8300 updates from Yoshinori Sato:
 "Some bug fixes"

* tag 'for-4.4' of git://git.osdn.jp/gitroot/uclinux-h8/linux:
  h8300: enable CLKSRC_OF
  h8300: Don't set CROSS_COMPILE unconditionally
  asm-generic: {get,put}_user ptr argument evaluate only 1 time
  h8300: bit io fix
  h8300: zImage fix
  h8300: register address fix
  h8300: Fix alignment for .data
  h8300: unaligned divcr register support.

arch/h8300/Kconfig

@@ -16,6 +16,7 @@ config H8300
 	select OF_EARLY_FLATTREE
 	select HAVE_MEMBLOCK
 	select HAVE_DMA_ATTRS
+	select CLKSRC_OF
 
 config RWSEM_GENERIC_SPINLOCK
 	def_bool y

arch/h8300/Makefile

@@ -22,7 +22,9 @@ KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\"
 KBUILD_AFLAGS += $(aflags-y)
 LDFLAGS += $(ldflags-y)
 
+ifeq ($(CROSS_COMPILE),)
 CROSS_COMPILE := h8300-unknown-linux-
+endif
 
 core-y	+= arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/
 ifneq '$(CONFIG_H8300_BUILTIN_DTB)' '""'

arch/h8300/boot/compressed/Makefile

@@ -14,11 +14,12 @@ OBJECTS = $(obj)/head.o $(obj)/misc.o
 # in order to suppress error message.
 #
 CONFIG_MEMORY_START     ?= 0x00400000
-CONFIG_BOOT_LINK_OFFSET ?= 0x00140000
+CONFIG_BOOT_LINK_OFFSET ?= 0x00280000
 IMAGE_OFFSET := $(shell printf "0x%08x" $$(($(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET))))
 
 LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
-LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -estartup $(obj)/vmlinux.lds
+LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -estartup -T $(obj)/vmlinux.lds \
+	--defsym output=$(CONFIG_MEMORY_START)
 
 $(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o $(LIBGCC) FORCE
 	$(call if_changed,ld)

arch/h8300/boot/compressed/head.S

@@ -9,8 +9,8 @@
 	.section	.text..startup,"ax"
 	.global	startup
 startup:
+	mov.l	#startup, sp
 	mov.l	er0, er4
-	mov.l	er0, sp
 	mov.l	#__sbss, er0
 	mov.l	#__ebss, er1
 	sub.l	er0, er1
@@ -24,7 +24,7 @@ startup:
 	bne	1b
 	jsr	@decompress_kernel
 	mov.l	er4, er0
-	jmp	@0x400000
+	jmp	@output
 
 	.align	9
 fake_headers_as_bzImage:

arch/h8300/boot/compressed/misc.c

@@ -28,7 +28,7 @@ static unsigned long free_mem_end_ptr;
 
 extern char input_data[];
 extern int input_len;
-static unsigned char *output;
+extern char output[];
 
 #define HEAP_SIZE             0x10000
 
@@ -56,15 +56,10 @@ void *memcpy(void *dest, const void *src, size_t n)
 
 static void error(char *x)
 {
-
 	while (1)
 		;	/* Halt */
 }
 
-#define STACK_SIZE (4096)
-long user_stack[STACK_SIZE];
-long *stack_start = &user_stack[STACK_SIZE];
-
 void decompress_kernel(void)
 {
 	free_mem_ptr = (unsigned long)&_end;

arch/h8300/boot/compressed/vmlinux.lds

@@ -27,6 +27,6 @@ SECTIONS
                 *(.bss*)
         . = ALIGN(0x4) ;
         __ebss = . ;
-        __end = . ;
         }
+        _end = . ;
 }

arch/h8300/boot/dts/edosk2674.dts

@@ -7,7 +7,7 @@
 
 	chosen {
 		bootargs = "console=ttySC2,38400";
-		stdout-path = <&sci2>;
+		stdout-path = &sci2;
 	};
 	aliases {
 		serial0 = &sci0;
@@ -25,13 +25,13 @@
 		compatible = "renesas,h8s2678-pll-clock";
 		clocks = <&xclk>;
 		#clock-cells = <0>;
-		reg = <0xfee03b 2>, <0xfee045 2>;
+		reg = <0xffff3b 1>, <0xffff45 1>;
 	};
 	core_clk: core_clk {
 		compatible = "renesas,h8300-div-clock";
 		clocks = <&pllclk>;
 		#clock-cells = <0>;
-		reg = <0xfee03b 2>;
+		reg = <0xffff3b 1>;
 		renesas,width = <3>;
 	};
 	fclk: fclk {

arch/h8300/include/asm/io.h

@@ -36,20 +36,20 @@ static inline void ctrl_outl(unsigned long b, unsigned long addr)
 	*(volatile unsigned long *)addr = b;
 }
 
-static inline void ctrl_bclr(int b, unsigned long addr)
+static inline void ctrl_bclr(int b, unsigned char *addr)
 {
 	if (__builtin_constant_p(b))
-		__asm__("bclr %1,%0" : : "WU"(addr), "i"(b));
+		__asm__("bclr %1,%0" : "+WU"(*addr): "i"(b));
 	else
-		__asm__("bclr %w1,%0" : : "WU"(addr), "r"(b));
+		__asm__("bclr %w1,%0" : "+WU"(*addr): "r"(b));
 }
 
-static inline void ctrl_bset(int b, unsigned long addr)
+static inline void ctrl_bset(int b, unsigned char *addr)
 {
 	if (__builtin_constant_p(b))
-		__asm__("bset %1,%0" : : "WU"(addr), "i"(b));
+		__asm__("bset %1,%0" : "+WU"(*addr): "i"(b));
 	else
-		__asm__("bset %w1,%0" : : "WU"(addr), "r"(b));
+		__asm__("bset %w1,%0" : "+WU"(*addr): "r"(b));
 }
 
 #endif /* __KERNEL__ */

arch/h8300/include/asm/thread_info.h

@@ -13,6 +13,12 @@
 
 #ifdef __KERNEL__
 
+/*
+ * Size of kernel stack for each process. This must be a power of 2...
+ */
+#define THREAD_SIZE_ORDER	1
+#define THREAD_SIZE		8192	/* 2 pages */
+
 #ifndef __ASSEMBLY__
 
 /*
@@ -46,14 +52,6 @@ struct thread_info {
 #define init_thread_info	(init_thread_union.thread_info)
 #define init_stack		(init_thread_union.stack)
 
-
-/*
- * Size of kernel stack for each process. This must be a power of 2...
- */
-#define THREAD_SIZE_ORDER	1
-#define THREAD_SIZE		8192	/* 2 pages */
-
-
 /* how to get the thread information struct from C */
 static inline struct thread_info *current_thread_info(void)
 {

arch/h8300/kernel/setup.c

@@ -29,6 +29,7 @@
 #include <linux/clk-provider.h>
 #include <linux/memblock.h>
 #include <linux/screen_info.h>
+#include <linux/clocksource.h>
 
 #include <asm/setup.h>
 #include <asm/irq.h>
@@ -252,4 +253,5 @@ void __init calibrate_delay(void)
 void __init time_init(void)
 {
 	of_clk_init(NULL);
+	clocksource_probe();
 }

arch/h8300/kernel/vmlinux.lds.S

@@ -1,5 +1,6 @@
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/page.h>
+#include <asm/thread_info.h>
 
 #define ROMTOP 0x000000
 #define RAMTOP 0x400000
@@ -42,11 +43,10 @@ SECTIONS
 	. = RAMTOP;
 	_ramstart = .;
 #define ADDR(x) ROMEND
-#else
 #endif
 	_sdata = . ;
 	__data_start = . ;
-	RW_DATA_SECTION(0,0,0)
+	RW_DATA_SECTION(0, PAGE_SIZE, THREAD_SIZE)
 #if defined(CONFIG_ROMKERNEL)
 #undef ADDR
 #endif

drivers/clk/h8300/clk-div.c

@@ -19,6 +19,7 @@ static void __init h8300_div_clk_setup(struct device_node *node)
 	const char *parent_name;
 	void __iomem *divcr = NULL;
 	int width;
+	int offset;
 
 	num_parents = of_clk_get_parent_count(node);
 	if (num_parents < 1) {
@@ -31,11 +32,14 @@ static void __init h8300_div_clk_setup(struct device_node *node)
 		pr_err("%s: failed to map divide register", clk_name);
 		goto error;
 	}
+	offset = (unsigned long)divcr & 3;
+	offset = (3 - offset) * 8;
+	divcr = (void *)((unsigned long)divcr & ~3);
 
 	parent_name = of_clk_get_parent_name(node, 0);
 	of_property_read_u32(node, "renesas,width", &width);
 	clk = clk_register_divider(NULL, clk_name, parent_name,
-				   CLK_SET_RATE_GATE, divcr, 0, width,
+				   CLK_SET_RATE_GATE, divcr, offset, width,
 				   CLK_DIVIDER_POWER_OF_TWO, &clklock);
 	if (!IS_ERR(clk)) {
 		of_clk_add_provider(node, of_clk_src_simple_get, clk);

include/asm-generic/uaccess.h

@@ -163,9 +163,10 @@ static inline __must_check long __copy_to_user(void __user *to,
 
 #define put_user(x, ptr)					\
 ({								\
+	void *__p = (ptr);					\
 	might_fault();						\
-	access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)) ?		\
-		__put_user(x, ptr) :				\
+	access_ok(VERIFY_WRITE, __p, sizeof(*ptr)) ?		\
+		__put_user((x), ((__typeof__(*(ptr)) *)__p)) :	\
 		-EFAULT;					\
 })
 
@@ -225,9 +226,10 @@ extern int __put_user_bad(void) __attribute__((noreturn));
 
 #define get_user(x, ptr)					\
 ({								\
+	const void *__p = (ptr);				\
 	might_fault();						\
-	access_ok(VERIFY_READ, ptr, sizeof(*ptr)) ?		\
-		__get_user(x, ptr) :				\
+	access_ok(VERIFY_READ, __p, sizeof(*ptr)) ?		\
+		__get_user((x), (__typeof__(*(ptr)) *)__p) :	\
 		-EFAULT;					\
 })