[PATCH u-boot v2019.04-aspeed-openbmc v2 01/10] configs/ast2600: Make early malloc pool larger

[Cédric Le Goater]

Hello,

On 4/20/21 8:46 AM, Joel Stanley wrote:
> The size of the early (pre-DRAM) SRAM heap in u-boot proper is extended
> to 8KB.
> 
> Testing found that the DRAM driver would perform an allocation that
> exceeded the limits, due to the probing of the HACE driver increasing
> memory presssure. As SRAM is unused when u-boot proper is running, it
> can all be allocated.
> 
> (In theory the entire 88KB of SRAM is free, but testing showed more than
> 60KB would break booting. Finding out why is TODO).

Could it be a HW problem ? 


C. 

> 
> The SPL early heap is fixed to 0x800, the default before this change.
> Testing shows that:
> 
>   SPL malloc() before relocation used 0x794 bytes (1 KB)
> 
> So 2KB should be enough.
> 
> Signed-off-by: Joel Stanley <joel at jms.id.au>
> ---
>  configs/ast2600_openbmc_spl_emmc_defconfig | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/configs/ast2600_openbmc_spl_emmc_defconfig b/configs/ast2600_openbmc_spl_emmc_defconfig
> index 6daf6343478b..5a4d66da1cea 100644
> --- a/configs/ast2600_openbmc_spl_emmc_defconfig
> +++ b/configs/ast2600_openbmc_spl_emmc_defconfig
> @@ -24,12 +24,13 @@ CONFIG_ASPEED_KERNEL_FIT_DRAM_BASE=0x83000000
>  CONFIG_TARGET_EVB_AST2600A1=y
>  CONFIG_SPL_LIBCOMMON_SUPPORT=y
>  CONFIG_SPL_LIBGENERIC_SUPPORT=y
> -CONFIG_SYS_MALLOC_F_LEN=0x800
> +CONFIG_SYS_MALLOC_F_LEN=0x2000
>  CONFIG_SPL_MMC_SUPPORT=y
>  CONFIG_SPL_SERIAL_SUPPORT=y
>  CONFIG_SPL_DRIVERS_MISC_SUPPORT=y
>  CONFIG_ENV_SIZE=0x10000
>  CONFIG_ENV_OFFSET=0x5000
> +CONFIG_SPL_SYS_MALLOC_F_LEN=0x800
>  CONFIG_SPL=y
>  CONFIG_SPL_STACK_R_ADDR=0x90300000
>  CONFIG_ARMV7_BOOT_SEC_DEFAULT=y
>