Hi!
> From: Dinh Nguyen <dingu...@opensource.altera.com>
>
> Enable the able to save the environment variables when SD/MMC is used.
>
> Signed-off-by: Dinh Nguyen <dingu...@opensource.altera.com>
> ---
> v3: Only define ENV_IS_NOWHERE if env is not in MMC, NAND, FAT, and SPI_FLASH
> v2: Move this option to be on a per-board basis
> Add config for socfpga_cyclone5 and socfpga_arria5
> ---
> include/configs/socfpga_arria5_socdk.h | 4 ++++
> include/configs/socfpga_common.h | 5 +++++
> include/configs/socfpga_cyclone5_socdk.h | 4 ++++
> include/configs/socfpga_de0_nano_soc.h | 4 ++++
> include/configs/socfpga_sockit.h | 4 ++++
> 5 files changed, 21 insertions(+)
>
> diff --git a/include/configs/socfpga_arria5_socdk.h
> b/include/configs/socfpga_arria5_socdk.h
> index 3193684..b75b0a2 100644
> --- a/include/configs/socfpga_arria5_socdk.h
> +++ b/include/configs/socfpga_arria5_socdk.h
> @@ -59,6 +59,10 @@
>
> #endif
>
> +#define CONFIG_ENV_IS_IN_MMC
> +#define CONFIG_SYS_MMC_ENV_DEV 0 /* device 0 */
> +#define CONFIG_ENV_OFFSET 512 /* just after the MBR */
> +
> /* USB */
> #ifdef CONFIG_CMD_USB
> #define CONFIG_USB_DWC2_REG_ADDR SOCFPGA_USB1_ADDRESS
> diff --git a/include/configs/socfpga_common.h
> b/include/configs/socfpga_common.h
> index a2811ba..b3fba5b 100644
> --- a/include/configs/socfpga_common.h
> +++ b/include/configs/socfpga_common.h
> @@ -281,7 +281,12 @@ unsigned int cm_get_qspi_controller_clk_hz(void);
> #define CONFIG_SYS_CONSOLE_IS_IN_ENV
> #define CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
> #define CONFIG_SYS_CONSOLE_ENV_OVERWRITE
> +#if !defined CONFIG_ENV_IS_IN_MMC && \
> + !defined CONFIG_ENV_IS_IN_NAND && \
> + !defined CONFIG_ENV_IS_IN_FAT && \
> + !defined CONFIG_ENV_IS_IN_SPI_FLASH
> #define CONFIG_ENV_IS_NOWHERE
> +#endif
> #define CONFIG_ENV_SIZE 4096
>
Actually... if we decided that position of u-boot environment is
board-specific, size should be board-specific, too.
But it might be better to just define
#define ENV_IN_MMC_SECTOR_1
in each board, and have the common code in socfpga_common.h... so that
we can change environment size for all boards using "after mmc"
layout, for example.
Ouch and 4K is way too small.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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