Date:	Wed, 04 Nov 2009 23:28:00 +0900
From:	Hirokazu Takata <takata@...ux-m32r.org>
To:	torvalds@...ux-foundation.org
Cc:	linux-m32r@...linux-m32r.org, linux-kernel@...r.kernel.org
Subject: [GIT PULL] m32r updates for 2.6.32-rc7

Hi Linus,

Here is m32r updates for 2.6.32-rc7.

Please pull the following updates from:
  git://www.linux-m32r.org/git/takata/linux-2.6_dev.git for-linus

Thanks,

-- Takata


The following changes since commit b419148e567728f6af0c3b01965c1cc141e3e13a:
  Linus Torvalds (1):
        Linux 2.6.32-rc6

are available in the git repository at:

  git://www.linux-m32r.org/git/takata/linux-2.6_dev.git for-linus

Hirokazu Takata (2):
      m32r: add NOTES to vmlinux.lds.S to remove .note.gnu.build-id section
      m32r: bzip2/lzma kernel compression support

Julia Lawall (1):
      arch/m32r: Use DIV_ROUND_CLOSEST

Roel Kluin (1):
      m32r: Should index be positive?

 arch/m32r/Kconfig                  |    3 +
 arch/m32r/boot/compressed/Makefile |   16 +++-
 arch/m32r/boot/compressed/misc.c   |  143 +++++++-----------------------------
 arch/m32r/kernel/smp.c             |    2 +-
 arch/m32r/kernel/time.c            |    6 +-
 arch/m32r/kernel/vmlinux.lds.S     |    2 +
 6 files changed, 48 insertions(+), 124 deletions(-)

---
commit 45cdd473301aae36e1f10664b9fe7ef5aad3f182
Author: Roel Kluin <roel.kluin@...il.com>
Date:   Sun Nov 1 15:33:06 2009 +0100

    m32r: Should index be positive?
    
    Index `ipi_num' is signed, test whether it is negative to
    make sure we don't get a negative array element.
    
    Signed-off-by: Roel Kluin <roel.kluin@...il.com>
    Signed-off-by: Hirokazu Takata <takata@...ux-m32r.org>

diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 8a88f1f..31cef20 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -806,7 +806,7 @@ unsigned long send_IPI_mask_phys(cpumask_t physid_mask, int ipi_num,
 
 	if (mask & ~physids_coerce(phys_cpu_present_map))
 		BUG();
-	if (ipi_num >= NR_IPIS)
+	if (ipi_num >= NR_IPIS || ipi_num < 0)
 		BUG();
 
 	mask <<= IPI_SHIFT;

commit 337214e8c6b0c777713b2483749f9c03102a416c
Author: Hirokazu Takata <takata@...ux-m32r.org>
Date:   Thu Oct 15 09:21:56 2009 +0900

    m32r: bzip2/lzma kernel compression support
    
    - Support bzip2 and lzma kernel compression for m32r.
    - Clean up arch/m32r/boot/compressed/misc.c.
    
    Signed-off-by: Hirokazu Takata <takata@...ux-m32r.org>

diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index c41234f..3a9319f 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -11,6 +11,9 @@ config M32R
 	select HAVE_IDE
 	select HAVE_OPROFILE
 	select INIT_ALL_POSSIBLE
+	select HAVE_KERNEL_GZIP
+	select HAVE_KERNEL_BZIP2
+	select HAVE_KERNEL_LZMA
 
 config SBUS
 	bool
diff --git a/arch/m32r/boot/compressed/Makefile b/arch/m32r/boot/compressed/Makefile
index 560484a..1003880 100644
--- a/arch/m32r/boot/compressed/Makefile
+++ b/arch/m32r/boot/compressed/Makefile
@@ -4,8 +4,8 @@
 # create a compressed vmlinux image from the original vmlinux
 #
 
-targets		:= vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o \
-		   piggy.o vmlinux.lds
+targets		:= vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
+		   vmlinux.bin.lzma head.o misc.o piggy.o vmlinux.lds
 
 OBJECTS = $(obj)/head.o $(obj)/misc.o
 
@@ -27,6 +27,12 @@ $(obj)/vmlinux.bin: vmlinux FORCE
 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
 	$(call if_changed,gzip)
 
+$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,bzip2)
+
+$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,lzma)
+
 CFLAGS_misc.o += -fpic
 
 ifdef CONFIG_MMU
@@ -37,5 +43,9 @@ endif
 
 OBJCOPYFLAGS += -R .empty_zero_page
 
-$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
+suffix_$(CONFIG_KERNEL_GZIP)	= gz
+suffix_$(CONFIG_KERNEL_BZIP2)	= bz2
+suffix_$(CONFIG_KERNEL_LZMA)	= lzma
+
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE
 	$(call if_changed,ld)
diff --git a/arch/m32r/boot/compressed/misc.c b/arch/m32r/boot/compressed/misc.c
index d394292..370d608 100644
--- a/arch/m32r/boot/compressed/misc.c
+++ b/arch/m32r/boot/compressed/misc.c
@@ -9,140 +9,49 @@
  * Adapted for SH by Stuart Menefy, Aug 1999
  *
  * 2003-02-12:	Support M32R by Takeo Takahashi
- * 		This is based on arch/sh/boot/compressed/misc.c.
  */
 
-#include <linux/string.h>
-
 /*
  * gzip declarations
  */
-
-#define OF(args)  args
 #define STATIC static
 
 #undef memset
 #undef memcpy
 #define memzero(s, n)     memset ((s), 0, (n))
 
-typedef unsigned char  uch;
-typedef unsigned short ush;
-typedef unsigned long  ulg;
-
-#define WSIZE 0x8000		/* Window size must be at least 32k, */
-				/* and a power of two */
-
-static uch *inbuf;	     /* input buffer */
-static uch window[WSIZE];    /* Sliding window buffer */
-
-static unsigned insize = 0;  /* valid bytes in inbuf */
-static unsigned inptr = 0;   /* index of next byte to be processed in inbuf */
-static unsigned outcnt = 0;  /* bytes in output buffer */
-
-/* gzip flag byte */
-#define ASCII_FLAG   0x01 /* bit 0 set: file probably ASCII text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
-#define EXTRA_FIELD  0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME    0x08 /* bit 3 set: original file name present */
-#define COMMENT      0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED    0x20 /* bit 5 set: file is encrypted */
-#define RESERVED     0xC0 /* bit 6,7:   reserved */
-
-#define get_byte()  (inptr < insize ? inbuf[inptr++] : fill_inbuf())
-
-/* Diagnostic functions */
-#ifdef DEBUG
-#  define Assert(cond,msg) {if(!(cond)) error(msg);}
-#  define Trace(x) fprintf x
-#  define Tracev(x) {if (verbose) fprintf x ;}
-#  define Tracevv(x) {if (verbose>1) fprintf x ;}
-#  define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-#  define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-#  define Assert(cond,msg)
-#  define Trace(x)
-#  define Tracev(x)
-#  define Tracevv(x)
-#  define Tracec(c,x)
-#  define Tracecv(c,x)
-#endif
-
-static int  fill_inbuf(void);
-static void flush_window(void);
 static void error(char *m);
 
-static unsigned char *input_data;
-static int input_len;
-
-static long bytes_out = 0;
-static uch *output_data;
-static unsigned long output_ptr = 0;
-
 #include "m32r_sio.c"
 
 static unsigned long free_mem_ptr;
 static unsigned long free_mem_end_ptr;
 
-#define HEAP_SIZE             0x10000
-
-#include "../../../../lib/inflate.c"
-
-void* memset(void* s, int c, size_t n)
+#ifdef CONFIG_KERNEL_BZIP2
+static void *memset(void *s, int c, size_t n)
 {
-	int i;
-	char *ss = (char*)s;
+	char *ss = s;
 
-	for (i=0;i<n;i++) ss[i] = c;
+	while (n--)
+	       	*ss++ = c;
 	return s;
 }
+#endif
 
-void* memcpy(void* __dest, __const void* __src,
-			    size_t __n)
-{
-	int i;
-	char *d = (char *)__dest, *s = (char *)__src;
-
-	for (i=0;i<__n;i++) d[i] = s[i];
-	return __dest;
-}
-
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-static int fill_inbuf(void)
-{
-	if (insize != 0) {
-		error("ran out of input data");
-	}
-
-	inbuf = input_data;
-	insize = input_len;
-	inptr = 1;
-	return inbuf[0];
-}
+#ifdef CONFIG_KERNEL_GZIP
+#define BOOT_HEAP_SIZE             0x10000
+#include "../../../../lib/decompress_inflate.c"
+#endif
 
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-static void flush_window(void)
-{
-    ulg c = crc;         /* temporary variable */
-    unsigned n;
-    uch *in, *out, ch;
+#ifdef CONFIG_KERNEL_BZIP2
+#define BOOT_HEAP_SIZE             0x400000
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
 
-    in = window;
-    out = &output_data[output_ptr];
-    for (n = 0; n < outcnt; n++) {
-	    ch = *out++ = *in++;
-	    c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
-    }
-    crc = c;
-    bytes_out += (ulg)outcnt;
-    output_ptr += (ulg)outcnt;
-    outcnt = 0;
-}
+#ifdef CONFIG_KERNEL_LZMA
+#define BOOT_HEAP_SIZE             0x10000
+#include "../../../../lib/decompress_unlzma.c"
+#endif
 
 static void error(char *x)
 {
@@ -153,20 +62,20 @@ static void error(char *x)
 	while(1);	/* Halt */
 }
 
-/* return decompressed size */
 void
 decompress_kernel(int mmu_on, unsigned char *zimage_data,
 		  unsigned int zimage_len, unsigned long heap)
 {
+	unsigned char *input_data = zimage_data;
+	int input_len = zimage_len;
+	unsigned char *output_data;
+
 	output_data = (unsigned char *)CONFIG_MEMORY_START + 0x2000
 		+ (mmu_on ? 0x80000000 : 0);
 	free_mem_ptr = heap;
-	free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
-	input_data = zimage_data;
-	input_len = zimage_len;
+	free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
 
-	makecrc();
-	puts("Uncompressing Linux... ");
-	gunzip();
-	puts("Ok, booting the kernel.\n");
+	puts("\nDecompressing Linux... ");
+	decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
+	puts("done.\nBooting the kernel.\n");
 }

commit e968b8d404ae8ab4ef218cd145f6dcb71e65154b
Author: Hirokazu Takata <takata@...ux-m32r.org>
Date:   Mon Oct 5 00:10:55 2009 +0900

    m32r: add NOTES to vmlinux.lds.S to remove .note.gnu.build-id section
    
    Building with --build-id option, .note.gnu.build-id section is added
    to vmlinux.bin.  But some old buggy binutils creates a huge vmlinux.bin,
    and a bootloader fails to boot its zImage as well.
    
    This patch adds a NOTES macro to a linker script vmlinux.ld.S to put
    .note.gnu.build-id section into .note section.
    Then, the .note section will be removed, because "-R .note" option is
    specified in OBJCOPYFLAGS to make a vmlinux.bin binary.
    
    Signed-off-by: Hirokazu Takata <takata@...ux-m32r.org>

diff --git a/arch/m32r/kernel/vmlinux.lds.S b/arch/m32r/kernel/vmlinux.lds.S
index 8ceb618..7da94ea 100644
--- a/arch/m32r/kernel/vmlinux.lds.S
+++ b/arch/m32r/kernel/vmlinux.lds.S
@@ -42,6 +42,8 @@ SECTIONS
   _etext = .;			/* End of text section */
 
   EXCEPTION_TABLE(16)
+  NOTES
+
   RODATA
   RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
   _edata = .;			/* End of data section */

commit 560235857fb79da48d36e8f866a0ee3b10a232bf
Author: Julia Lawall <julia@...u.dk>
Date:   Sun Aug 2 10:47:27 2009 +0200

    arch/m32r: Use DIV_ROUND_CLOSEST
    
    The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
    but is perhaps more readable.
    
    The semantic patch that makes this change is as follows:
    (http://www.emn.fr/x-info/coccinelle/)
    
    // <smpl>
    @haskernel@
    @@
    
    @depends on haskernel@
    expression x,__divisor;
    @@
    
    - (((x) + ((__divisor) / 2)) / (__divisor))
    + DIV_ROUND_CLOSEST(x,__divisor)
    // </smpl>
    
    Signed-off-by: Julia Lawall <julia@...u.dk>
    Signed-off-by: Hirokazu Takata <takata@...ux-m32r.org>

diff --git a/arch/m32r/kernel/time.c b/arch/m32r/kernel/time.c
index e7fee0f..9cedcef 100644
--- a/arch/m32r/kernel/time.c
+++ b/arch/m32r/kernel/time.c
@@ -75,7 +75,7 @@ u32 arch_gettimeoffset(void)
 		count = 0;
 
 	count = (latch - count) * TICK_SIZE;
-	elapsed_time = (count + latch / 2) / latch;
+	elapsed_time = DIV_ROUND_CLOSEST(count, latch);
 	/* NOTE: LATCH is equal to the "interval" value (= reload count). */
 
 #else /* CONFIG_SMP */
@@ -93,7 +93,7 @@ u32 arch_gettimeoffset(void)
 	p_count = count;
 
 	count = (latch - count) * TICK_SIZE;
-	elapsed_time = (count + latch / 2) / latch;
+	elapsed_time = DIV_ROUND_CLOSEST(count, latch);
 	/* NOTE: LATCH is equal to the "interval" value (= reload count). */
 #endif /* CONFIG_SMP */
 #elif defined(CONFIG_CHIP_M32310)
@@ -211,7 +211,7 @@ void __init time_init(void)
 
 		bus_clock = boot_cpu_data.bus_clock;
 		divide = boot_cpu_data.timer_divide;
-		latch = (bus_clock/divide + HZ / 2) / HZ;
+		latch = DIV_ROUND_CLOSEST(bus_clock/divide, HZ);
 
 		printk("Timer start : latch = %ld\n", latch);
 
--
Hirokazu Takata <takata@...ux-m32r.org>
Linux/M32R Project:  http://www.linux-m32r.org/
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