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compressed image update

PATCH Superseded Jean-Christophe PLAGNIOL-VILLARD 3 participants 18 messages Jul 22, 2012

Subsystems (3)
Arm (32-bit) Kbuild Library code

v1 of 3 Superseded Latest is v3 →

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Jean-Christophe PLAGNIOL-VILLARD

author
#0 lore raw

cover compressed image update

Hi,

The following changes since commit 63ac9c743b1304b0b4b792643e4704394f6f8aeb:

only compress default env in uncompressed images (2012-07-20 14:20:15 +0200)

are available in the git repository at:

git://git.jcrosoft.org/barebox.git tags/compressed-gzip

for you to fetch changes up to 5c808702b4235a39d78042f9ad4f99647c9b8c54:

compressed image: add gzip support (2012-07-22 20:35:48 +0800)

----------------------------------------------------------------
compressed: gzip support and cleanup

The follwing patch series add the support of GZIP

And allow now to link only what is need in the decompressor

This is needed if you want to compile a barebox with modules support

as we current rely on gcc and it's garbage colector to clean the non needed object.

With modules support gcc will not do this.

This will allow to have a version of barebox shrink to the first 128KiB so it can fit in the first page of nand which is garanty badblock free and then if we need more feature we will use modules store in an other partitions.

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>

----------------------------------------------------------------
Jean-Christophe PLAGNIOL-VILLARD (7):
stddev: make it selectable via Kconfig
decompress_unlzo: define decompress_unlzo as decompress compressed image: factorise compressor type
decompressor: import malloc/free implementation for linux 3.4
ARM: add early malloc support needed by the decompressor
compressed: allow to link only what is needed compressed image: add gzip support

 Makefile                      |   31 +++++++++++++++++++++----------
 arch/arm/Makefile             |    7 +++++++
 arch/arm/cpu/start.c          |   20 +++++++++++++++++---
 arch/arm/lib/Makefile         |    2 +-
 arch/arm/lib/barebox.lds.S    |    2 +-
 commands/Makefile             |    2 +-
 common/Kconfig                |   25 ++++++++++++++++++++++---
 compressed/Makefile           |    5 +++++
 compressed/misc.c             |   10 ++++++++++
 compressed/string.c           |  127 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/decompress/mm.h |   68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/decompress_inflate.c      |    1 +
 lib/decompress_unlzo.c        |    1 +
 piggy.gzip.S                  |    6 ++++++
 14 files changed, 288 insertions(+), 19 deletions(-)
 create mode 100644 compressed/Makefile
 create mode 100644 compressed/misc.c
 create mode 100644 compressed/string.c
 create mode 100644 include/linux/decompress/mm.h
 create mode 100644 piggy.gzip.S

Best Regards,
J.

_______________________________________________
barebox mailing list
[email protected]
http://lists.infradead.org/mailman/listinfo/barebox

author
#1 lore raw

PATCH 1/7 stddev: make it selectable via Kconfig

enable is by default for simple and hush
we do not need to NO_SHELL

this allow to save 1KiB

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 commands/Makefile |    2 +-
 common/Kconfig    |    5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)
commands/Makefile +1 -1
index 54191b4..e9157bf 100644
@@ -1,4 +1,4 @@
-obj-y				+= stddev.o
+obj-$(CONFIG_STDDEV)		+= stddev.o
 obj-$(CONFIG_CMD_BOOTM)		+= bootm.o
 obj-$(CONFIG_CMD_UIMAGE)	+= uimage.o
 obj-$(CONFIG_CMD_LINUX16)	+= linux16.o
common/Kconfig +5 -0
index 1c996aa..c6f1afa 100644
@@ -50,6 +50,9 @@ config BINFMT
 config GLOBALVAR
 	bool
 
+config STDDEV
+	bool
+
 menu "General Settings              "
 
 config LOCALVERSION

@@ -295,6 +298,7 @@ choice
 		select COMMAND_SUPPORT
 		select PARAMETER
 		select BINFMT
+		select STDDEV
 		help
 		  Enable hush support. This is the most advanced shell available
 		  for barebox.

@@ -304,6 +308,7 @@ choice
 		select ENVIRONMENT_VARIABLES
 		select COMMAND_SUPPORT
 		select PARAMETER
+		select STDDEV
 		help
 		  simple shell. No if/then, no return values from commands, no loops
Signature · 1 line
1.7.10
author
#2 lore raw

PATCH 2/7 decompress_unlzo: define decompress_unlzo as decompress

so we can use decompress in the decompressor
this will simplify multi decompress support

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 lib/decompress_unlzo.c |    1 +
 1 file changed, 1 insertion(+)
lib/decompress_unlzo.c +1 -0
index 0e6a7ad..56abfc6 100644
@@ -289,3 +289,4 @@ exit_1:
 exit:
 	return ret;
 }
+#define decompress decompress_unlzo
Signature · 1 line
1.7.10
author
#3 lore raw

PATCH 3/7 compressed image: factorise compressor type

In reply to Jean-Christophe PLAGNIOL-VILLARD

This will simplify to support of multi compressor support such as gzip, lzma, xz.

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 Makefile                   |   12 +++++++-----
 arch/arm/cpu/start.c       |    9 ++++++---
 arch/arm/lib/Makefile      |    2 +-
 arch/arm/lib/barebox.lds.S |    2 +-
 common/Kconfig             |   17 ++++++++++++++---
 5 files changed, 29 insertions(+), 13 deletions(-)
Makefile +7 -5
index e0a3c07..0b3da03 100644
@@ -715,20 +715,22 @@ barebox-uncompressed: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsym
 barebox-uncompressed.bin: barebox-uncompressed
 	$(call if_changed,objcopy)
 
+suffix_$(CONFIG_IMAGE_COMPRESSION_LZO)	= lzo
+
 barebox-uncompressed.bin.lzo: barebox-uncompressed.bin
 	@echo "  LZO    " $@
 	$(Q)lzop -f -9 -o $@ barebox-uncompressed.bin
 
-piggy.lzo.o: barebox-uncompressed.bin.lzo $(src)/piggy.lzo.S
+piggy.$(suffix_y).o: barebox-uncompressed.bin.$(suffix_y) $(src)/piggy.$(suffix_y).S
 	@echo "  CC     " $@
-	$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) -c $(src)/piggy.lzo.S -o $@
+	$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) -c $(src)/piggy.$(suffix_y).S -o $@
 
-ifdef CONFIG_IMAGE_COMPRESSION_LZO
-barebox: piggy.lzo.o
+ifdef CONFIG_IMAGE_COMPRESSION
+barebox: piggy.$(suffix_y).o
 	@echo "  LD     " $@
 	$(Q)$(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
 		-T $(barebox-compressed-lds) \
-		--start-group $(barebox-common) piggy.lzo.o --end-group
+		--start-group $(barebox-common) piggy.$(suffix_y).o --end-group
 else
 barebox: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsyms.o) FORCE
 	$(call barebox-modpost)
arch/arm/cpu/start.c +6 -3
index 6743804..18c5c83 100644
@@ -28,7 +28,7 @@
 #include <asm-generic/memory_layout.h>
 #include <asm/sections.h>
 
-#ifdef CONFIG_IMAGE_COMPRESSION_LZO
+#ifdef CONFIG_IMAGE_COMPRESSION
 void __naked __section(.text_head_entry) compressed_start(void)
 {
 	barebox_arm_head();

@@ -101,7 +101,10 @@ extern void *input_data;
 extern void *input_data_end;
 
 #define STATIC static
+
+#ifdef CONFIG_IMAGE_COMPRESSION_LZO
 #include "../../../lib/decompress_unlzo.c"
+#endif
 
 void barebox_uncompress(void *compressed_start, unsigned int len)
 {

@@ -112,7 +115,7 @@ void barebox_uncompress(void *compressed_start, unsigned int len)
 	else
 		barebox = (void *)TEXT_BASE;
 
-	decompress_unlzo((void *)compressed_start,
+	decompress((void *)compressed_start,
 			len,
 			NULL, NULL,
 			(void *)TEXT_BASE, NULL, NULL);

@@ -158,7 +161,7 @@ void __naked __section(.text_ll_return) board_init_lowlevel_return(void)
 	/* flush I-cache before jumping to the copied binary */
 	__asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
 
-	if (IS_ENABLED(CONFIG_IMAGE_COMPRESSION_LZO)) {
+	if (IS_ENABLED(CONFIG_IMAGE_COMPRESSION)) {
 		compressed_start = (uint32_t)&input_data - offset;
 		compressed_end = (uint32_t)&input_data_end - offset;
 		len = compressed_end - compressed_start;
arch/arm/lib/Makefile +1 -1
index 044d3e6..1b6f7f4 100644
@@ -21,4 +21,4 @@ obj-$(CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS)	+= memset.o
 obj-$(CONFIG_ARM_UNWIND) += unwind.o
 obj-$(CONFIG_MODULES) += module.o
 extra-y += barebox.lds
-extra-$(CONFIG_IMAGE_COMPRESSION_LZO) += barebox-compressed.lds
+extra-$(CONFIG_IMAGE_COMPRESSION) += barebox-compressed.lds
arch/arm/lib/barebox.lds.S +1 -1
index b415830..b22cf98 100644
@@ -31,7 +31,7 @@ SECTIONS
 {
 	. = TEXT_BASE;
 
-#ifndef CONFIG_IMAGE_COMPRESSION_LZO
+#ifndef CONFIG_IMAGE_COMPRESSION
 	PRE_IMAGE
 #endif
 	. = ALIGN(4);
common/Kconfig +14 -3
index c6f1afa..8437e1c 100644
@@ -99,9 +99,20 @@ menu "memory layout                 "
 config HAVE_IMAGE_COMPRESSION
 	bool
 
+config IMAGE_COMPRESSION
+	bool "Compressed image"
+
+if IMAGE_COMPRESSION
+
+choice
+	prompt "Compression"
+
 config IMAGE_COMPRESSION_LZO
-	depends on HAVE_IMAGE_COMPRESSION
-	bool "lzo compressed image"
+	bool "lzo"
+
+endchoice
+
+endif
 
 config MMU
 	bool "Enable MMU"

@@ -185,7 +196,7 @@ config MALLOC_SIZE
 	prompt "malloc area size"
 
 config HEAD_TEXT_BASE
-	depends on MEMORY_LAYOUT_FIXED && IMAGE_COMPRESSION_LZO
+	depends on MEMORY_LAYOUT_FIXED && IMAGE_COMPRESSION
 	hex
 	prompt "HEAD_TEXT_BASE"
 endmenu
Signature · 1 line
1.7.10
author
#4 lore raw

PATCH 4/7 decompressor: import malloc/free implementation for linux 3.4

In reply to Jean-Christophe PLAGNIOL-VILLARD

This is need for gunzip support

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 include/linux/decompress/mm.h |   68 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 include/linux/decompress/mm.h
include/linux/decompress/mm.h new file +68 -0
new file mode 100644
index 0000000..0c35411
@@ -0,0 +1,68 @@
+/*
+ * linux/compr_mm.h
+ *
+ * Memory management for pre-boot and ramdisk uncompressors
+ *
+ * Authors: Alain Knaff <[email protected]>
+ *
+ */
+
+#ifndef DECOMPR_MM_H
+#define DECOMPR_MM_H
+
+#ifdef STATIC
+
+/* Code active when included from pre-boot environment: */
+
+/*
+ * Some architectures want to ensure there is no local data in their
+ * pre-boot environment, so that data can arbitrarily relocated (via
+ * GOT references).  This is achieved by defining STATIC_RW_DATA to
+ * be null.
+ */
+#ifndef STATIC_RW_DATA
+#define STATIC_RW_DATA static
+#endif
+
+/* A trivial malloc implementation, adapted from
+ *  malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
+ */
+STATIC_RW_DATA unsigned long malloc_ptr;
+STATIC_RW_DATA int malloc_count;
+
+static void *malloc(int size)
+{
+	void *p;
+
+	if (size < 0)
+		return NULL;
+	if (!malloc_ptr)
+		malloc_ptr = free_mem_ptr;
+
+	malloc_ptr = (malloc_ptr + 3) & ~3;     /* Align */
+
+	p = (void *)malloc_ptr;
+	malloc_ptr += size;
+
+	if (free_mem_end_ptr && malloc_ptr >= free_mem_end_ptr)
+		return NULL;
+
+	malloc_count++;
+	return p;
+}
+
+static void free(void *where)
+{
+	malloc_count--;
+	if (!malloc_count)
+		malloc_ptr = free_mem_ptr;
+}
+
+#define large_malloc(a) malloc(a)
+#define large_free(a) free(a)
+
+#define INIT
+
+#endif /* STATIC */
+
+#endif /* DECOMPR_MM_H */
Signature · 1 line
1.7.10
author
#5 lore raw

PATCH 5/7 ARM: add early malloc support needed by the decompressor

In reply to Jean-Christophe PLAGNIOL-VILLARD

This is not needed by lzo but by gunzip, xz and others.

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 arch/arm/cpu/start.c |    7 +++++++
 1 file changed, 7 insertions(+)
arch/arm/cpu/start.c +7 -0
index 18c5c83..8ab6fdc 100644
@@ -28,6 +28,9 @@
 #include <asm-generic/memory_layout.h>
 #include <asm/sections.h>
 
+unsigned long free_mem_ptr;
+unsigned long free_mem_end_ptr;
+
 #ifdef CONFIG_IMAGE_COMPRESSION
 void __naked __section(.text_head_entry) compressed_start(void)
 {

@@ -158,6 +161,10 @@ void __naked __section(.text_ll_return) board_init_lowlevel_return(void)
 	/* clear bss */
 	memset(__bss_start, 0, __bss_stop - __bss_start);
 
+	/* set 128 KiB before the STACK_BASE - 16 address for early malloc */
+	free_mem_ptr = STACK_BASE - 0x20000 - 16;
+	free_mem_end_ptr = STACK_BASE - 16;
+
 	/* flush I-cache before jumping to the copied binary */
 	__asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
Signature · 1 line
1.7.10
author
#6 lore raw

PATCH 6/7 compressed: allow to link only what is needed

In reply to Jean-Christophe PLAGNIOL-VILLARD

Today we link to whole barebox and rely on gcc to cleanup via it's garbage collector.

Now we specify only what is needed and introduce a new directory with source only related to the compressed target.

The architecture will have to specify the needed file for the link via comp-arch-y.

Import string functions from linux 3.4 (arch/arm/boot/compressed/string.c) and implement a dummy panic.

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 Makefile            |   16 ++++---
 arch/arm/Makefile   |    7 +++
 compressed/Makefile |    5 ++
 compressed/misc.c   |   10 ++++
 compressed/string.c |  127 +++++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 159 insertions(+), 6 deletions(-)
 create mode 100644 compressed/Makefile
 create mode 100644 compressed/misc.c
 create mode 100644 compressed/string.c
Makefile +10 -6
index 0b3da03..d6a3ae5 100644
@@ -412,6 +412,7 @@ scripts: scripts_basic include/config/auto.conf
 
 # Objects we will link into barebox / subdirs we need to visit
 common-y		:= common/ drivers/ commands/ lib/ crypto/ net/ fs/
+comp-y			:= compressed/
 
 ifeq ($(dot-config),1)
 # Read in config

@@ -474,7 +475,7 @@ CFLAGS += $(call cc-option,-Wno-pointer-sign,)
 # this default value
 export KBUILD_IMAGE ?= barebox
 
-barebox-dirs	:= $(patsubst %/,%,$(filter %/, $(common-y)))
+barebox-dirs	:= $(patsubst %/,%,$(filter %/, $(common-y) $(comp-y)))
 
 barebox-alldirs	:= $(sort $(barebox-dirs) $(patsubst %/,%,$(filter %/, \
 		     $(common-n) $(common-) \

@@ -482,6 +483,8 @@ barebox-alldirs	:= $(sort $(barebox-dirs) $(patsubst %/,%,$(filter %/, \
 		     $(net-n)  $(net-)  $(libs-n)    $(libs-))))
 
 common-y	:= $(patsubst %/, %/built-in.o, $(common-y))
+comp-y		:= $(patsubst %/, %/built-in.o, $(comp-y))
+comp-arch-y	:= $(patsubst %/, %/built-in.o, $(comp-arch-y))
 
 # Build barebox
 # ---------------------------------------------------------------------------

@@ -509,8 +512,9 @@ common-y	:= $(patsubst %/, %/built-in.o, $(common-y))
 #
 # System.map is generated to document addresses of all kernel symbols
 
+barebox-comp := $(comp-y)
 barebox-common := $(common-y)
-barebox-all    := $(barebox-common)
+barebox-all    := $(barebox-common) $(barebox-comp)
 barebox-lds    := $(lds-y)
 barebox-compressed-lds    := $(lds-compressed-y)
 

@@ -726,11 +730,11 @@ piggy.$(suffix_y).o: barebox-uncompressed.bin.$(suffix_y) $(src)/piggy.$(suffix_
 	$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) -c $(src)/piggy.$(suffix_y).S -o $@
 
 ifdef CONFIG_IMAGE_COMPRESSION
-barebox: piggy.$(suffix_y).o
-	@echo "  LD     " $@
+barebox: piggy.$(suffix_y).o $(barebox-comp)
+	@echo "  LD     " $@ $(barebox-comp)
 	$(Q)$(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
 		-T $(barebox-compressed-lds) \
-		--start-group $(barebox-common) piggy.$(suffix_y).o --end-group
+		--start-group $(barebox-comp) $(comp-arch-y) piggy.$(suffix_y).o --end-group
 else
 barebox: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsyms.o) FORCE
 	$(call barebox-modpost)

@@ -743,7 +747,7 @@ barebox.srec: barebox
 
 # The actual objects are generated when descending,
 # make sure no implicit rule kicks in
-$(sort $(barebox-head) $(barebox-common) ) $(barebox-lds): $(barebox-dirs) ;
+$(sort $(barebox-head) $(barebox-common) $(barebox-comp) ) $(barebox-lds): $(barebox-dirs) ;
 
 # Handle descending into subdirectories listed in $(barebox-dirs)
 # Preset locale variables to speed up the build process. Limit locale
arch/arm/Makefile +7 -0
index a93c4d5..0c666dc 100644
@@ -207,6 +207,13 @@ endif
 common-y += $(BOARD) $(MACH)
 common-y += arch/arm/lib/ arch/arm/cpu/
 
+# those file will not be recompibled
+# we assume they are already compiled
+# for the normal barebox
+comp-arch-y += arch/arm/lib/lib1funcs.o
+comp-arch-y += arch/arm/lib/div0.o
+comp-arch-y += arch/arm/cpu/start.o
+
 lds-y	:= arch/arm/lib/barebox.lds
 lds-compressed-y := arch/arm/lib/barebox-compressed.lds
compressed/Makefile new file +5 -0
new file mode 100644
index 0000000..720a0cb
@@ -0,0 +1,5 @@
+#
+# only unsed by the decompressor
+#
+obj-y += misc.o
+obj-y += string.o
compressed/misc.c new file +10 -0
new file mode 100644
index 0000000..7bb0f50
@@ -0,0 +1,10 @@
+#include <common.h>
+#include <init.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+
+void __noreturn panic(const char *fmt, ...)
+{
+	while(1);
+}
compressed/string.c new file +127 -0

127 lines not on this page · raw message

Signature · 1 line
1.7.10
author
#7 lore raw

PATCH 7/7 compressed image: add gzip support

In reply to Jean-Christophe PLAGNIOL-VILLARD
Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 Makefile                 |    7 ++++++-
 arch/arm/cpu/start.c     |    4 ++++
 common/Kconfig           |    3 +++
 lib/decompress_inflate.c |    1 +
 piggy.gzip.S             |    6 ++++++
 5 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 piggy.gzip.S
Makefile +6 -1
index d6a3ae5..1003786 100644
@@ -719,8 +719,13 @@ barebox-uncompressed: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsym
 barebox-uncompressed.bin: barebox-uncompressed
 	$(call if_changed,objcopy)
 
+suffix_$(CONFIG_IMAGE_COMPRESSION_GZIP) = gzip
 suffix_$(CONFIG_IMAGE_COMPRESSION_LZO)	= lzo
 
+barebox-uncompressed.bin.gzip: barebox-uncompressed.bin
+	@echo "  GZIP   " $@
+	$(Q)gzip -n -9 -c barebox-uncompressed.bin > $@
+
 barebox-uncompressed.bin.lzo: barebox-uncompressed.bin
 	@echo "  LZO    " $@
 	$(Q)lzop -f -9 -o $@ barebox-uncompressed.bin

@@ -1039,7 +1044,7 @@ CLEAN_FILES +=	barebox System.map include/generated/barebox_default_env.h \
 		.tmp_kallsyms* barebox_default_env* barebox.ldr \
 		scripts/bareboxenv-target \
 		Doxyfile.version barebox.srec barebox.s5p \
-		barebox-uncompressed barebox-uncompressed.bin barebox-uncompressed.bin.lzo
+		barebox-uncompressed barebox-uncompressed.bin*
 
 # Directories & files removed with 'make mrproper'
 MRPROPER_DIRS  += include/config include2 usr/include
arch/arm/cpu/start.c +4 -0
index 8ab6fdc..8e63523 100644
@@ -109,6 +109,10 @@ extern void *input_data_end;
 #include "../../../lib/decompress_unlzo.c"
 #endif
 
+#ifdef CONFIG_IMAGE_COMPRESSION_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
 void barebox_uncompress(void *compressed_start, unsigned int len)
 {
 	void (*barebox)(void);
common/Kconfig +3 -0
index 8437e1c..702a0bd 100644
@@ -110,6 +110,9 @@ choice
 config IMAGE_COMPRESSION_LZO
 	bool "lzo"
 
+config IMAGE_COMPRESSION_GZIP
+	bool "gzip"
+
 endchoice
 
 endif
lib/decompress_inflate.c +1 -0
index 526d6a1..5c1ebb6 100644
@@ -4,6 +4,7 @@
 /* prevent inclusion of _LINUX_KERNEL_H in pre-boot environment: lots
  * errors about console_printk etc... on ARM */
 #define _LINUX_KERNEL_H
+#include <linux/decompress/mm.h>
 
 #include "zlib_inflate/inftrees.c"
 #include "zlib_inflate/inffast.c"
piggy.gzip.S new file +6 -0
new file mode 100644
index 0000000..2ca7d78
@@ -0,0 +1,6 @@
+	.section .piggydata,#alloc
+	.globl  input_data
+input_data:
+	.incbin "barebox-uncompressed.bin.gzip"
+	.globl  input_data_end
+input_data_end:
Signature · 1 line
1.7.10
#8 lore raw

PATCH 1/7 stddev: make it selectable via Kconfig

In reply to Jean-Christophe PLAGNIOL-VILLARD

Hi Jean-Christophe,

Quoted 6 lines · Jean-Christophe PLAGNIOL-VILLARD

enable is by default for simple and hush
we do not need to NO_SHELL

this allow to save 1KiB

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>

Wrong list. This series was intended for the Barebox list.

baruch

Signature · 3 lines
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
#9 lore raw

PATCH 1/7 stddev: make it selectable via Kconfig

In reply to Jean-Christophe PLAGNIOL-VILLARD

Le Sun, 22 Jul 2012 15:18:56 +0200,
Jean-Christophe PLAGNIOL-VILLARD <[email protected]> a ?crit :

Quoted 10 lines

enable is by default for simple and hush
we do not need to NO_SHELL

this allow to save 1KiB

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 commands/Makefile |    2 +-
 common/Kconfig    |    5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

Hum, I guess this should have been sent to the barebox@ mailing list, rather than the linux-arm-kernel@ mailing list, no?

Thomas

Signature · 4 lines
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
author
#10 lore raw

PATCH 1/7 stddev: make it selectable via Kconfig

Quoted 8 lines · Thomas Petazzoni

Le Sun, 22 Jul 2012 15:18:56 +0200,
Jean-Christophe PLAGNIOL-VILLARD <[email protected]> a ?crit :

Quoted 5 lines

enable is by default for simple and hush
we do not need to NO_SHELL

this allow to save 1KiB

Quoted 8 lines
Quoted 5 lines
Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 commands/Makefile |    2 +-
 common/Kconfig    |    5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

Hum, I guess this should have been sent to the barebox@ mailing list, rather than the linux-arm-kernel@ mailing list, no?

yeap I send it to the wrong ml

Best Regards,

author
#11 lore raw

PATCH 1/7 stddev: make it selectable via Kconfig

In reply to Jean-Christophe PLAGNIOL-VILLARD

enable is by default for simple and hush
we do not need to NO_SHELL

this allow to save 1KiB

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 commands/Makefile |    2 +-
 common/Kconfig    |    5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)
commands/Makefile +1 -1
index 54191b4..e9157bf 100644
@@ -1,4 +1,4 @@
-obj-y				+= stddev.o
+obj-$(CONFIG_STDDEV)		+= stddev.o
 obj-$(CONFIG_CMD_BOOTM)		+= bootm.o
 obj-$(CONFIG_CMD_UIMAGE)	+= uimage.o
 obj-$(CONFIG_CMD_LINUX16)	+= linux16.o
common/Kconfig +5 -0
index 1c996aa..c6f1afa 100644
@@ -50,6 +50,9 @@ config BINFMT
 config GLOBALVAR
 	bool
 
+config STDDEV
+	bool
+
 menu "General Settings              "
 
 config LOCALVERSION

@@ -295,6 +298,7 @@ choice
 		select COMMAND_SUPPORT
 		select PARAMETER
 		select BINFMT
+		select STDDEV
 		help
 		  Enable hush support. This is the most advanced shell available
 		  for barebox.

@@ -304,6 +308,7 @@ choice
 		select ENVIRONMENT_VARIABLES
 		select COMMAND_SUPPORT
 		select PARAMETER
+		select STDDEV
 		help
 		  simple shell. No if/then, no return values from commands, no loops
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#12 lore raw

PATCH 2/7 decompress_unlzo: define decompress_unlzo as decompress

so we can use decompress in the decompressor
this will simplify multi decompress support

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 lib/decompress_unlzo.c |    1 +
 1 file changed, 1 insertion(+)
lib/decompress_unlzo.c +1 -0
index 0e6a7ad..56abfc6 100644
@@ -289,3 +289,4 @@ exit_1:
 exit:
 	return ret;
 }
+#define decompress decompress_unlzo
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#13 lore raw

PATCH 3/7 compressed image: factorise compressor type

In reply to Jean-Christophe PLAGNIOL-VILLARD

This will simplify to support of multi compressor support such as gzip, lzma, xz.

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 Makefile                   |   12 +++++++-----
 arch/arm/cpu/start.c       |    9 ++++++---
 arch/arm/lib/Makefile      |    2 +-
 arch/arm/lib/barebox.lds.S |    2 +-
 common/Kconfig             |   17 ++++++++++++++---
 5 files changed, 29 insertions(+), 13 deletions(-)
Makefile +7 -5
index e0a3c07..0b3da03 100644
@@ -715,20 +715,22 @@ barebox-uncompressed: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsym
 barebox-uncompressed.bin: barebox-uncompressed
 	$(call if_changed,objcopy)
 
+suffix_$(CONFIG_IMAGE_COMPRESSION_LZO)	= lzo
+
 barebox-uncompressed.bin.lzo: barebox-uncompressed.bin
 	@echo "  LZO    " $@
 	$(Q)lzop -f -9 -o $@ barebox-uncompressed.bin
 
-piggy.lzo.o: barebox-uncompressed.bin.lzo $(src)/piggy.lzo.S
+piggy.$(suffix_y).o: barebox-uncompressed.bin.$(suffix_y) $(src)/piggy.$(suffix_y).S
 	@echo "  CC     " $@
-	$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) -c $(src)/piggy.lzo.S -o $@
+	$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) -c $(src)/piggy.$(suffix_y).S -o $@
 
-ifdef CONFIG_IMAGE_COMPRESSION_LZO
-barebox: piggy.lzo.o
+ifdef CONFIG_IMAGE_COMPRESSION
+barebox: piggy.$(suffix_y).o
 	@echo "  LD     " $@
 	$(Q)$(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
 		-T $(barebox-compressed-lds) \
-		--start-group $(barebox-common) piggy.lzo.o --end-group
+		--start-group $(barebox-common) piggy.$(suffix_y).o --end-group
 else
 barebox: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsyms.o) FORCE
 	$(call barebox-modpost)
arch/arm/cpu/start.c +6 -3
index 6743804..18c5c83 100644
@@ -28,7 +28,7 @@
 #include <asm-generic/memory_layout.h>
 #include <asm/sections.h>
 
-#ifdef CONFIG_IMAGE_COMPRESSION_LZO
+#ifdef CONFIG_IMAGE_COMPRESSION
 void __naked __section(.text_head_entry) compressed_start(void)
 {
 	barebox_arm_head();

@@ -101,7 +101,10 @@ extern void *input_data;
 extern void *input_data_end;
 
 #define STATIC static
+
+#ifdef CONFIG_IMAGE_COMPRESSION_LZO
 #include "../../../lib/decompress_unlzo.c"
+#endif
 
 void barebox_uncompress(void *compressed_start, unsigned int len)
 {

@@ -112,7 +115,7 @@ void barebox_uncompress(void *compressed_start, unsigned int len)
 	else
 		barebox = (void *)TEXT_BASE;
 
-	decompress_unlzo((void *)compressed_start,
+	decompress((void *)compressed_start,
 			len,
 			NULL, NULL,
 			(void *)TEXT_BASE, NULL, NULL);

@@ -158,7 +161,7 @@ void __naked __section(.text_ll_return) board_init_lowlevel_return(void)
 	/* flush I-cache before jumping to the copied binary */
 	__asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
 
-	if (IS_ENABLED(CONFIG_IMAGE_COMPRESSION_LZO)) {
+	if (IS_ENABLED(CONFIG_IMAGE_COMPRESSION)) {
 		compressed_start = (uint32_t)&input_data - offset;
 		compressed_end = (uint32_t)&input_data_end - offset;
 		len = compressed_end - compressed_start;
arch/arm/lib/Makefile +1 -1
index 044d3e6..1b6f7f4 100644
@@ -21,4 +21,4 @@ obj-$(CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS)	+= memset.o
 obj-$(CONFIG_ARM_UNWIND) += unwind.o
 obj-$(CONFIG_MODULES) += module.o
 extra-y += barebox.lds
-extra-$(CONFIG_IMAGE_COMPRESSION_LZO) += barebox-compressed.lds
+extra-$(CONFIG_IMAGE_COMPRESSION) += barebox-compressed.lds
arch/arm/lib/barebox.lds.S +1 -1
index b415830..b22cf98 100644
@@ -31,7 +31,7 @@ SECTIONS
 {
 	. = TEXT_BASE;
 
-#ifndef CONFIG_IMAGE_COMPRESSION_LZO
+#ifndef CONFIG_IMAGE_COMPRESSION
 	PRE_IMAGE
 #endif
 	. = ALIGN(4);
common/Kconfig +14 -3
index c6f1afa..8437e1c 100644
@@ -99,9 +99,20 @@ menu "memory layout                 "
 config HAVE_IMAGE_COMPRESSION
 	bool
 
+config IMAGE_COMPRESSION
+	bool "Compressed image"
+
+if IMAGE_COMPRESSION
+
+choice
+	prompt "Compression"
+
 config IMAGE_COMPRESSION_LZO
-	depends on HAVE_IMAGE_COMPRESSION
-	bool "lzo compressed image"
+	bool "lzo"
+
+endchoice
+
+endif
 
 config MMU
 	bool "Enable MMU"

@@ -185,7 +196,7 @@ config MALLOC_SIZE
 	prompt "malloc area size"
 
 config HEAD_TEXT_BASE
-	depends on MEMORY_LAYOUT_FIXED && IMAGE_COMPRESSION_LZO
+	depends on MEMORY_LAYOUT_FIXED && IMAGE_COMPRESSION
 	hex
 	prompt "HEAD_TEXT_BASE"
 endmenu
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#14 lore raw

PATCH 4/7 decompressor: import malloc/free implementation for linux 3.4

In reply to Jean-Christophe PLAGNIOL-VILLARD

This is need for gunzip support

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 include/linux/decompress/mm.h |   68 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 include/linux/decompress/mm.h
include/linux/decompress/mm.h new file +68 -0
new file mode 100644
index 0000000..0c35411
@@ -0,0 +1,68 @@
+/*
+ * linux/compr_mm.h
+ *
+ * Memory management for pre-boot and ramdisk uncompressors
+ *
+ * Authors: Alain Knaff <[email protected]>
+ *
+ */
+
+#ifndef DECOMPR_MM_H
+#define DECOMPR_MM_H
+
+#ifdef STATIC
+
+/* Code active when included from pre-boot environment: */
+
+/*
+ * Some architectures want to ensure there is no local data in their
+ * pre-boot environment, so that data can arbitrarily relocated (via
+ * GOT references).  This is achieved by defining STATIC_RW_DATA to
+ * be null.
+ */
+#ifndef STATIC_RW_DATA
+#define STATIC_RW_DATA static
+#endif
+
+/* A trivial malloc implementation, adapted from
+ *  malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
+ */
+STATIC_RW_DATA unsigned long malloc_ptr;
+STATIC_RW_DATA int malloc_count;
+
+static void *malloc(int size)
+{
+	void *p;
+
+	if (size < 0)
+		return NULL;
+	if (!malloc_ptr)
+		malloc_ptr = free_mem_ptr;
+
+	malloc_ptr = (malloc_ptr + 3) & ~3;     /* Align */
+
+	p = (void *)malloc_ptr;
+	malloc_ptr += size;
+
+	if (free_mem_end_ptr && malloc_ptr >= free_mem_end_ptr)
+		return NULL;
+
+	malloc_count++;
+	return p;
+}
+
+static void free(void *where)
+{
+	malloc_count--;
+	if (!malloc_count)
+		malloc_ptr = free_mem_ptr;
+}
+
+#define large_malloc(a) malloc(a)
+#define large_free(a) free(a)
+
+#define INIT
+
+#endif /* STATIC */
+
+#endif /* DECOMPR_MM_H */
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#15 lore raw

PATCH 5/7 ARM: add early malloc support needed by the decompressor

In reply to Jean-Christophe PLAGNIOL-VILLARD

This is not needed by lzo but by gunzip, xz and others.

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 arch/arm/cpu/start.c |    7 +++++++
 1 file changed, 7 insertions(+)
arch/arm/cpu/start.c +7 -0
index 18c5c83..8ab6fdc 100644
@@ -28,6 +28,9 @@
 #include <asm-generic/memory_layout.h>
 #include <asm/sections.h>
 
+unsigned long free_mem_ptr;
+unsigned long free_mem_end_ptr;
+
 #ifdef CONFIG_IMAGE_COMPRESSION
 void __naked __section(.text_head_entry) compressed_start(void)
 {

@@ -158,6 +161,10 @@ void __naked __section(.text_ll_return) board_init_lowlevel_return(void)
 	/* clear bss */
 	memset(__bss_start, 0, __bss_stop - __bss_start);
 
+	/* set 128 KiB before the STACK_BASE - 16 address for early malloc */
+	free_mem_ptr = STACK_BASE - 0x20000 - 16;
+	free_mem_end_ptr = STACK_BASE - 16;
+
 	/* flush I-cache before jumping to the copied binary */
 	__asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
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#16 lore raw

PATCH 6/7 compressed: allow to link only what is needed

In reply to Jean-Christophe PLAGNIOL-VILLARD

Today we link to whole barebox and rely on gcc to cleanup via it's garbage collector.

Now we specify only what is needed and introduce a new directory with source only related to the compressed target.

The architecture will have to specify the needed file for the link via comp-arch-y.

Import string functions from linux 3.4 (arch/arm/boot/compressed/string.c) and implement a dummy panic.

Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 Makefile            |   16 ++++---
 arch/arm/Makefile   |    7 +++
 compressed/Makefile |    5 ++
 compressed/misc.c   |   10 ++++
 compressed/string.c |  127 +++++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 159 insertions(+), 6 deletions(-)
 create mode 100644 compressed/Makefile
 create mode 100644 compressed/misc.c
 create mode 100644 compressed/string.c
Makefile +10 -6
index 0b3da03..d6a3ae5 100644
@@ -412,6 +412,7 @@ scripts: scripts_basic include/config/auto.conf
 
 # Objects we will link into barebox / subdirs we need to visit
 common-y		:= common/ drivers/ commands/ lib/ crypto/ net/ fs/
+comp-y			:= compressed/
 
 ifeq ($(dot-config),1)
 # Read in config

@@ -474,7 +475,7 @@ CFLAGS += $(call cc-option,-Wno-pointer-sign,)
 # this default value
 export KBUILD_IMAGE ?= barebox
 
-barebox-dirs	:= $(patsubst %/,%,$(filter %/, $(common-y)))
+barebox-dirs	:= $(patsubst %/,%,$(filter %/, $(common-y) $(comp-y)))
 
 barebox-alldirs	:= $(sort $(barebox-dirs) $(patsubst %/,%,$(filter %/, \
 		     $(common-n) $(common-) \

@@ -482,6 +483,8 @@ barebox-alldirs	:= $(sort $(barebox-dirs) $(patsubst %/,%,$(filter %/, \
 		     $(net-n)  $(net-)  $(libs-n)    $(libs-))))
 
 common-y	:= $(patsubst %/, %/built-in.o, $(common-y))
+comp-y		:= $(patsubst %/, %/built-in.o, $(comp-y))
+comp-arch-y	:= $(patsubst %/, %/built-in.o, $(comp-arch-y))
 
 # Build barebox
 # ---------------------------------------------------------------------------

@@ -509,8 +512,9 @@ common-y	:= $(patsubst %/, %/built-in.o, $(common-y))
 #
 # System.map is generated to document addresses of all kernel symbols
 
+barebox-comp := $(comp-y)
 barebox-common := $(common-y)
-barebox-all    := $(barebox-common)
+barebox-all    := $(barebox-common) $(barebox-comp)
 barebox-lds    := $(lds-y)
 barebox-compressed-lds    := $(lds-compressed-y)
 

@@ -726,11 +730,11 @@ piggy.$(suffix_y).o: barebox-uncompressed.bin.$(suffix_y) $(src)/piggy.$(suffix_
 	$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) -c $(src)/piggy.$(suffix_y).S -o $@
 
 ifdef CONFIG_IMAGE_COMPRESSION
-barebox: piggy.$(suffix_y).o
-	@echo "  LD     " $@
+barebox: piggy.$(suffix_y).o $(barebox-comp)
+	@echo "  LD     " $@ $(barebox-comp)
 	$(Q)$(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
 		-T $(barebox-compressed-lds) \
-		--start-group $(barebox-common) piggy.$(suffix_y).o --end-group
+		--start-group $(barebox-comp) $(comp-arch-y) piggy.$(suffix_y).o --end-group
 else
 barebox: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsyms.o) FORCE
 	$(call barebox-modpost)

@@ -743,7 +747,7 @@ barebox.srec: barebox
 
 # The actual objects are generated when descending,
 # make sure no implicit rule kicks in
-$(sort $(barebox-head) $(barebox-common) ) $(barebox-lds): $(barebox-dirs) ;
+$(sort $(barebox-head) $(barebox-common) $(barebox-comp) ) $(barebox-lds): $(barebox-dirs) ;
 
 # Handle descending into subdirectories listed in $(barebox-dirs)
 # Preset locale variables to speed up the build process. Limit locale
arch/arm/Makefile +7 -0
index a93c4d5..0c666dc 100644
@@ -207,6 +207,13 @@ endif
 common-y += $(BOARD) $(MACH)
 common-y += arch/arm/lib/ arch/arm/cpu/
 
+# those file will not be recompibled
+# we assume they are already compiled
+# for the normal barebox
+comp-arch-y += arch/arm/lib/lib1funcs.o
+comp-arch-y += arch/arm/lib/div0.o
+comp-arch-y += arch/arm/cpu/start.o
+
 lds-y	:= arch/arm/lib/barebox.lds
 lds-compressed-y := arch/arm/lib/barebox-compressed.lds
compressed/Makefile new file +5 -0
new file mode 100644
index 0000000..720a0cb
@@ -0,0 +1,5 @@
+#
+# only unsed by the decompressor
+#
+obj-y += misc.o
+obj-y += string.o
compressed/misc.c new file +10 -0
new file mode 100644
index 0000000..7bb0f50
@@ -0,0 +1,10 @@
+#include <common.h>
+#include <init.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+
+void __noreturn panic(const char *fmt, ...)
+{
+	while(1);
+}
compressed/string.c new file +127 -0

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#17 lore raw

PATCH 7/7 compressed image: add gzip support

In reply to Jean-Christophe PLAGNIOL-VILLARD
Signed-off-by Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
 Makefile                 |    7 ++++++-
 arch/arm/cpu/start.c     |    4 ++++
 common/Kconfig           |    3 +++
 lib/decompress_inflate.c |    1 +
 piggy.gzip.S             |    6 ++++++
 5 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 piggy.gzip.S
Makefile +6 -1
index d6a3ae5..1003786 100644
@@ -719,8 +719,13 @@ barebox-uncompressed: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsym
 barebox-uncompressed.bin: barebox-uncompressed
 	$(call if_changed,objcopy)
 
+suffix_$(CONFIG_IMAGE_COMPRESSION_GZIP) = gzip
 suffix_$(CONFIG_IMAGE_COMPRESSION_LZO)	= lzo
 
+barebox-uncompressed.bin.gzip: barebox-uncompressed.bin
+	@echo "  GZIP   " $@
+	$(Q)gzip -n -9 -c barebox-uncompressed.bin > $@
+
 barebox-uncompressed.bin.lzo: barebox-uncompressed.bin
 	@echo "  LZO    " $@
 	$(Q)lzop -f -9 -o $@ barebox-uncompressed.bin

@@ -1039,7 +1044,7 @@ CLEAN_FILES +=	barebox System.map include/generated/barebox_default_env.h \
 		.tmp_kallsyms* barebox_default_env* barebox.ldr \
 		scripts/bareboxenv-target \
 		Doxyfile.version barebox.srec barebox.s5p \
-		barebox-uncompressed barebox-uncompressed.bin barebox-uncompressed.bin.lzo
+		barebox-uncompressed barebox-uncompressed.bin*
 
 # Directories & files removed with 'make mrproper'
 MRPROPER_DIRS  += include/config include2 usr/include
arch/arm/cpu/start.c +4 -0
index 8ab6fdc..8e63523 100644
@@ -109,6 +109,10 @@ extern void *input_data_end;
 #include "../../../lib/decompress_unlzo.c"
 #endif
 
+#ifdef CONFIG_IMAGE_COMPRESSION_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
 void barebox_uncompress(void *compressed_start, unsigned int len)
 {
 	void (*barebox)(void);
common/Kconfig +3 -0
index 8437e1c..702a0bd 100644
@@ -110,6 +110,9 @@ choice
 config IMAGE_COMPRESSION_LZO
 	bool "lzo"
 
+config IMAGE_COMPRESSION_GZIP
+	bool "gzip"
+
 endchoice
 
 endif
lib/decompress_inflate.c +1 -0
index 526d6a1..5c1ebb6 100644
@@ -4,6 +4,7 @@
 /* prevent inclusion of _LINUX_KERNEL_H in pre-boot environment: lots
  * errors about console_printk etc... on ARM */
 #define _LINUX_KERNEL_H
+#include <linux/decompress/mm.h>
 
 #include "zlib_inflate/inftrees.c"
 #include "zlib_inflate/inffast.c"
piggy.gzip.S new file +6 -0
new file mode 100644
index 0000000..2ca7d78
@@ -0,0 +1,6 @@
+	.section .piggydata,#alloc
+	.globl  input_data
+input_data:
+	.incbin "barebox-uncompressed.bin.gzip"
+	.globl  input_data_end
+input_data_end:
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