[U-Boot-Users] Why is ENV_IS_EMBEDDED globally define when NAND bootloader is built ?

Hello Stefan,
I am trying to set up a NAND_SPL bootloader for a different PowerPC processor.
I want to store the environment variables in the NAND Flash at a location above the boot loader, so that I can reprogram the bootloader without overwriting the variables when I copy the u-boot-nand.bin image into the NAND flash.
However in the changes made on Sept 12, the include/environment.h file was modified to define ENV_IS_EMBEDDED whenever CONFIG_NAND_U_BOOT is defined.
Is there any reason that this configuration setting cannot be moved into the board specific include file instead ?
diff --git a/include/configs/sequoia.h b/include/configs/sequoia.h index 3a76315..33ff4cf 100644 --- a/include/configs/sequoia.h +++ b/include/configs/sequoia.h @@ -102,6 +102,7 @@ #if !defined(CONFIG_NAND_U_BOOT) && !def #define CFG_ENV_IS_IN_FLASH 1 /* use FLASH for environment vars */ #else #define CFG_ENV_IS_IN_NAND 1 /* use NAND for environment vars */ +#define ENV_IS_EMBEDDED 1 /* use embedded environment */ #endif
/*---------------------------------------------------------------------- - diff --git a/include/environment.h b/include/environment.h index 26b0712..422f800 100644 --- a/include/environment.h +++ b/include/environment.h @@ -79,10 +79,6 @@ # endif # ifdef CFG_ENV_OFFSET_REDUND # define CFG_REDUNDAND_ENVIRONMENT # endif -# if defined(CONFIG_NAND_U_BOOT) -/* Use embedded environment in NAND boot versions */ -# define ENV_IS_EMBEDDED 1 -# endif #endif /* CFG_ENV_IS_IN_NAND */
Am I missing something ?
Thanks,
Nick Spence Freescale Semiconductor, 1300 N. Alma School Road, Chandler, AZ 85224

Hi Nick,
On Monday 20 November 2006 09:16, Spence Nick-rxtd10 wrote:
I am trying to set up a NAND_SPL bootloader for a different PowerPC processor.
Good. Additional board/cpu support for this new U-Boot NAND booting feature is very welcome. :-)
I want to store the environment variables in the NAND Flash at a location above the boot loader, so that I can reprogram the bootloader without overwriting the variables when I copy the u-boot-nand.bin image into the NAND flash.
Understood. Just a side note: You could use a command that runs "saveenv" upon updating the U-Boot image. This way you won't loose the environment.
However in the changes made on Sept 12, the include/environment.h file was modified to define ENV_IS_EMBEDDED whenever CONFIG_NAND_U_BOOT is defined.
Is there any reason that this configuration setting cannot be moved into the board specific include file instead ?
Not really. We can move this define into some board specific place. We should use the define "CFG_ENV_IS_EMBEDDED" in the board config file though and not the define "ENV_IS_EMBEDDED".
Best regards, Stefan
participants (2)
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Spence Nick-rxtd10
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Stefan Roese