From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from 3.mo1.mail-out.ovh.net ([46.105.60.232] helo=mo1.mail-out.ovh.net) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1SupLo-0002hR-CT for barebox@lists.infradead.org; Fri, 27 Jul 2012 18:33:25 +0000 Received: from mail94.ha.ovh.net (b7.ovh.net [213.186.33.57]) by mo1.mail-out.ovh.net (Postfix) with SMTP id D21A9FF9837 for ; Fri, 27 Jul 2012 20:39:13 +0200 (CEST) From: Jean-Christophe PLAGNIOL-VILLARD Date: Fri, 27 Jul 2012 20:33:03 +0200 Message-Id: <1343413990-31891-5-git-send-email-plagnioj@jcrosoft.com> In-Reply-To: <1343413990-31891-1-git-send-email-plagnioj@jcrosoft.com> References: <20120727183103.GX22657@game.jcrosoft.org> <1343413990-31891-1-git-send-email-plagnioj@jcrosoft.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 05/12] Add compressed image support To: barebox@lists.infradead.org From: Sascha Hauer This allows for creating a lzo compressed binary unsing the pbl. Signed-off-by: Sascha Hauer [From: Jean-Christophe PLAGNIOL-VILLARD ] re-integrate it in the new pbl target. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- arch/arm/Kconfig | 1 + arch/arm/Makefile | 4 ++++ arch/arm/cpu/start.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++ arch/arm/pbl/Makefile | 16 +++++++++++-- arch/arm/pbl/piggy.lzo.S | 6 +++++ 5 files changed, 84 insertions(+), 2 deletions(-) create mode 100644 arch/arm/pbl/piggy.lzo.S diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 3d11497..245bec8 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -5,6 +5,7 @@ config ARM select HAVE_CONFIGURABLE_MEMORY_LAYOUT select HAVE_CONFIGURABLE_TEXT_BASE select HAVE_PBL_IMAGE + select HAVE_IMAGE_COMPRESSION default y config ARM_AMBA diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 80ef986..8e4bb48 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -194,6 +194,10 @@ ifeq ($(CONFIG_ARCH_DAVINCI),y) KBUILD_IMAGE := barebox.ubl endif +ifdef CONFIG_IMAGE_COMPRESSION +KBUILD_IMAGE := zbarebox.bin +endif + pbl := arch/arm/pbl zbarebox.S zbarebox.bin zbarebox: barebox.bin $(Q)$(MAKE) $(build)=$(pbl) $(pbl)/$@ diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c index 49b1d5b..a54f5fd 100644 --- a/arch/arm/cpu/start.c +++ b/arch/arm/cpu/start.c @@ -98,8 +98,67 @@ void __naked __bare_init reset(void) } #ifdef __PBL__ +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) +{ + void (*barebox)(void); + + if (IS_ENABLED(CONFIG_THUMB2_BAREBOX)) + barebox = (void *)(TEXT_BASE + 1); + else + barebox = (void *)TEXT_BASE; + + decompress((void *)compressed_start, + len, + NULL, NULL, + (void *)TEXT_BASE, NULL, NULL); + + /* flush I-cache before jumping to the uncompressed binary */ + __asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : : "r" (0)); + + barebox(); +} + void barebox_pbl(uint32_t offset) { + uint32_t compressed_start, compressed_end, len; + void (*uncompress)(void *compressed_start, unsigned int len); + + compressed_start = (uint32_t)&input_data - offset; + compressed_end = (uint32_t)&input_data_end - offset; + len = compressed_end - compressed_start; + + /* + * Check if the compressed binary will be overwritten + * by the uncompressed binary + */ + if (compressed_start >= TEXT_BASE && + compressed_start < TEXT_BASE + len * 4 ) { + /* + * copy compressed binary to its link address + */ + memcpy(&input_data, (void *)compressed_start, len); + compressed_start = (uint32_t)&input_data; + } + + uncompress = barebox_uncompress; + + /* call barebox_uncompress with its absolute address */ + __asm__ __volatile__( + "mov r0, %1\n" + "mov r1, %2\n" + "mov pc, %0\n" + : + : "r"(uncompress), "r"(compressed_start), "r"(len) + : "r0", "r1"); } #else void barebox_pbl(uint32_t offset) {} diff --git a/arch/arm/pbl/Makefile b/arch/arm/pbl/Makefile index 9b364bb..4135911 100644 --- a/arch/arm/pbl/Makefile +++ b/arch/arm/pbl/Makefile @@ -1,7 +1,14 @@ +suffix_$(CONFIG_IMAGE_COMPRESSION_LZO) = lzo + OBJCOPYFLAGS_zbarebox.bin = -O binary +piggy_o := piggy.$(suffix_y).o + +targets := zbarebox.lds zbarebox zbarebox.bin zbarebox.S \ + $(piggy_o) piggy.$(suffix_y) -targets := zbarebox.lds zbarebox zbarebox.bin zbarebox.S +# Make sure files are removed during clean +extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern $(obj)/zbarebox.bin: $(obj)/zbarebox FORCE $(call if_changed,objcopy) @@ -12,7 +19,7 @@ $(obj)/zbarebox.S: $(obj)/zbarebox FORCE $(call if_changed,disasm) LDFLAGS_zbarebox := -Map zbarebox.map -zbarebox-common := $(barebox-pbl-common) +zbarebox-common := $(barebox-pbl-common) $(obj)/$(piggy_o) zbarebox-lds := $(obj)/zbarebox.lds quiet_cmd_zbarebox__ ?= LD $@ @@ -23,3 +30,8 @@ quiet_cmd_zbarebox__ ?= LD $@ $(obj)/zbarebox: $(zbarebox-lds) $(zbarebox-common) FORCE $(call if_changed,zbarebox__) + +$(obj)/piggy.$(suffix_y): $(obj)/../../../barebox.bin FORCE + $(call if_changed,$(suffix_y)) + +$(obj)/$(piggy_o): $(obj)/piggy.$(suffix_y) FORCE diff --git a/arch/arm/pbl/piggy.lzo.S b/arch/arm/pbl/piggy.lzo.S new file mode 100644 index 0000000..0c0d216 --- /dev/null +++ b/arch/arm/pbl/piggy.lzo.S @@ -0,0 +1,6 @@ + .section .piggydata,#alloc + .globl input_data +input_data: + .incbin "arch/arm/compressed/piggy.lzo" + .globl input_data_end +input_data_end: -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox