| Message ID | 1303630430-29811-1-git-send-email-vapier@gentoo.org |
|---|---|
| State | Superseded |
| Delegated to: | Wolfgang Denk |
| Headers | show |
Dear Mike Frysinger, In message <1303630430-29811-1-git-send-email-vapier@gentoo.org> you wrote: > For people who want to manually extract the embedded environment so that > it can be manually packed into the final u-boot image, add a config opt > to force building of the envcrc tool. > > Signed-off-by: Mike Frysinger <vapier@gentoo.org> > --- > README | 5 +++++ > common/env_embedded.c | 2 +- > include/common.h | 5 +++++ > tools/Makefile | 1 + > tools/envcrc.c | 10 +++++++--- > 5 files changed, 19 insertions(+), 4 deletions(-) How would that be used? Can you please provide an example? Best regards, Wolfgang Denk
On Sun, Apr 24, 2011 at 10:28 AM, Wolfgang Denk wrote: > Mike Frysinger wrote: >> For people who want to manually extract the embedded environment so that >> it can be manually packed into the final u-boot image, add a config opt >> to force building of the envcrc tool. >> >> Signed-off-by: Mike Frysinger <vapier@gentoo.org> >> --- >> README | 5 +++++ >> common/env_embedded.c | 2 +- >> include/common.h | 5 +++++ >> tools/Makefile | 1 + >> tools/envcrc.c | 10 +++++++--- >> 5 files changed, 19 insertions(+), 4 deletions(-) > > How would that be used? Can you please provide an example? for Blackfin targets, i have to generate an LDR format. this is the file that is ultimately burned into the flash. since i cant embed the env in the original ELF/binary (since offsets in that will not correlate to actual flash offsets), i have to let the ldr-utils do the embedding. so after the final ELF has been linked, Blackfin targets run: tools/envcrc --binary > env-ldr.o bfin-uclinux-ldr -T bf548-0.0 -c u-boot.ldr u-boot --bmode PARA --use-vmas --initcode arch/blackfin/cpu/initcode.o -J --punchit $((0x2000)):$((0x2000)):env-ldr.o --dma 6 and this produces the LDR: DXE 1 at 0x00000000: Offset BlockCode Address Bytes Argument Block 1 0x00000000: 0xADC85006 0xFFA00000 0x00000000 0x00049CF4 ( 16bit-dma-from-16bit ignore first ) Block 2 0x00000010: 0xADAF0806 0xFFA00000 0x00000170 0xDEADBEEF ( 16bit-dma-from-16bit init ) Block 3 0x00000190: 0xAD340006 0x03F00000 0x00001E50 0xDEADBEEF ( 16bit-dma-from-16bit ) Block 4 0x00001FF0: 0xAD711006 0x00000000 0x00002000 0xBAADF00D ( 16bit-dma-from-16bit ignore ) Block 5 0x00004000: 0xADE50006 0x03F01E50 0x000061B0 0xDEADBEEF ( 16bit-dma-from-16bit ) .... more Blocks .... and now the embedded environment is at the right offset -- 0x2000 (it's Block 4 in the above output) -mike
diff --git a/README b/README index beb1cbb..c517204 100644 --- a/README +++ b/README @@ -2447,6 +2447,11 @@ The following definitions that deal with the placement and management of environment data (variable area); in general, we support the following configurations: +- CONFIG_BUILD_ENVCRC: + + Builds up envcrc with the target environment so that external utils + may easily extract it and embed it in final U-Boot images. + - CONFIG_ENV_IS_IN_FLASH: Define this if the environment is in flash memory. diff --git a/common/env_embedded.c b/common/env_embedded.c index ae6cac4..e438575 100644 --- a/common/env_embedded.c +++ b/common/env_embedded.c @@ -44,7 +44,7 @@ * Generate embedded environment table * inside U-Boot image, if needed. */ -#if defined(ENV_IS_EMBEDDED) +#if defined(ENV_IS_EMBEDDED) || defined(CONFIG_BUILD_ENVCRC) /* * Only put the environment in it's own section when we are building * U-Boot proper. The host based program "tools/envcrc" does not need diff --git a/include/common.h b/include/common.h index 21c05db..9253cd1 100644 --- a/include/common.h +++ b/include/common.h @@ -756,4 +756,9 @@ int cpu_release(int nr, int argc, char * const argv[]); #define ALIGN(x,a) __ALIGN_MASK((x),(typeof(x))(a)-1) #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) +/* Pull in stuff for the build system */ +#ifdef DO_DEPS_ONLY +# include <environment.h> +#endif + #endif /* __COMMON_H_ */ diff --git a/tools/Makefile b/tools/Makefile index 623f908..5784f51 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -51,6 +51,7 @@ endif # Generated executable files BIN_FILES-$(CONFIG_LCD_LOGO) += bmp_logo$(SFX) BIN_FILES-$(CONFIG_VIDEO_LOGO) += bmp_logo$(SFX) +BIN_FILES-$(CONFIG_BUILD_ENVCRC) += envcrc$(SFX) BIN_FILES-$(CONFIG_ENV_IS_EMBEDDED) += envcrc$(SFX) BIN_FILES-$(CONFIG_ENV_IS_IN_DATAFLASH) += envcrc$(SFX) BIN_FILES-$(CONFIG_ENV_IS_IN_EEPROM) += envcrc$(SFX) diff --git a/tools/envcrc.c b/tools/envcrc.c index c8c50d7..feebbab 100644 --- a/tools/envcrc.c +++ b/tools/envcrc.c @@ -60,6 +60,10 @@ # endif #endif /* CONFIG_ENV_IS_IN_FLASH */ +#if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC) +# define CONFIG_BUILD_ENVCRC 1 +#endif + #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1) #else @@ -71,14 +75,14 @@ extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int); -#ifdef ENV_IS_EMBEDDED +#ifdef CONFIG_BUILD_ENVCRC extern unsigned int env_size; extern unsigned char environment; -#endif /* ENV_IS_EMBEDDED */ +#endif /* CONFIG_BUILD_ENVCRC */ int main (int argc, char **argv) { -#ifdef ENV_IS_EMBEDDED +#ifdef CONFIG_BUILD_ENVCRC unsigned char pad = 0x00; uint32_t crc; unsigned char *envptr = &environment,
For people who want to manually extract the embedded environment so that it can be manually packed into the final u-boot image, add a config opt to force building of the envcrc tool. Signed-off-by: Mike Frysinger <vapier@gentoo.org> --- README | 5 +++++ common/env_embedded.c | 2 +- include/common.h | 5 +++++ tools/Makefile | 1 + tools/envcrc.c | 10 +++++++--- 5 files changed, 19 insertions(+), 4 deletions(-)