[U-Boot] Sunxi H5 and CONFIG_ENV_IS_IN_MMC problem

[Jack Mitchell]

On 16/03/2019 14:07, g4 at novadsp.com wrote:
> Greetings
> 
> Our board has an AllWinner H5 with SPI flash and eMMC. Since SPI flash
> support for 'saveenv' is not currently mainline, I thought I'd simply use
> one of the eMMC boot blocks to persist the environment. However I keep
> running into image size problems [1]
> 
> Not being a U-Boot ninja, the defconfig [2] is about as minimal as I believe
> I can make it. (Network support is required for TFTP/NFS operations) Does
> the panel have any suggestions for getting the desired configuration built?
> 
> MTIA.
> 
> Jerry.

Hey Jerry,

Take a look at the final defconfig once you've run 'make
yourboard_defconfig' in order to see if there is anything specific you
disable. Your current defconfig is very minimal but a lot of things will
be turned on by default and you should look at specifically switching
them off in order to reduce the size.

Cheers,
Jack.

> --------------------------------snip----------------------------------------
> --
> [1]
> MKSUNXI spl/sunxi-spl.bin
>   MKIMAGE u-boot.img
>   MKIMAGE u-boot-dtb.img
> /home/moi/src/u-boot/denx/"board/sunxi/mksunxi_fit_atf.sh" \
> arch/arm/dts/anemos-sc5.dtb > u-boot.its
>   MKIMAGE u-boot.itb
> u-boot.itb exceeds file size limit:
>   limit:  516096 bytes
>   actual: 519448 bytes
>   excess: 3352 bytes
> /home/moi/src/u-boot/denx/Makefile:1204: recipe for target 'u-boot.itb'
> failed
> 
> ----------------------------snip------------------------------------------
> [2]
> CONFIG_ARM=y
> CONFIG_ARCH_SUNXI=y
> CONFIG_SPL=y
> CONFIG_MACH_SUN50I_H5=y
> CONFIG_DRAM_CLK=504
> CONFIG_DRAM_ZQ=3881977
> CONFIG_DRAM_ODT_EN=y
> CONFIG_MACPWR="PD6"
> CONFIG_MMC_SUNXI_SLOT_EXTRA=2
> CONFIG_SPL_SPI_SUNXI=y
> CONFIG_SPL_SPI_FLASH_SUPPORT=y
> CONFIG_SPL_SPI_FLASH_TINY=y
> CONFIG_DEFAULT_DEVICE_TREE="anemos-sc5"
> CONFIG_ENV_IS_IN_MMC=y
> CONFIG_NET_RANDOM_ETHADDR=y
> CONFIG_MTD=y
> CONFIG_MTD_DEVICE=y
> CONFIG_SUN8I_EMAC=y
> CONFIG_USB_EHCI_HCD=y
> CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE=y
> 
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