[PATCH] sunxi-common: support loading compressed kernel images on ARMv8

[Andre Przywara]

On 20/02/2021 12:14, Nicolas Boulenguez wrote:

Hi Arnaud,

> From: Arnaud Ferraris <arnaud.ferraris at gmail.com>

as mentioned before, this looks useful, so can you re-send this with a
commit message and your Signed-off-by:?

Also I was wondering if you could increase the COMP_SIZE? The 64MB look
rather arbitrary and maybe unnecessarily limiting. I think we could go
up till 0xfa00000, but maybe should stop at 0xf800000, to leave some
space for further extensions?

Cheers,
Andre

> 
> ---
>  include/configs/sunxi-common.h | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
> index 5b0bec0561..227284cd29 100644
> --- a/include/configs/sunxi-common.h
> +++ b/include/configs/sunxi-common.h
> @@ -291,6 +291,8 @@ extern int soft_i2c_gpio_scl;
>   */
>  #define BOOTM_SIZE	__stringify(0xa000000)
>  #define KERNEL_ADDR_R	__stringify(SDRAM_OFFSET(0080000))
> +#define KERNEL_COMP_ADDR_R	__stringify(SDRAM_OFFSET(4000000))
> +#define KERNEL_COMP_SIZE	__stringify(0x4000000)
>  #define FDT_ADDR_R	__stringify(SDRAM_OFFSET(FA00000))
>  #define SCRIPT_ADDR_R	__stringify(SDRAM_OFFSET(FC00000))
>  #define PXEFILE_ADDR_R	__stringify(SDRAM_OFFSET(FD00000))
> @@ -332,6 +334,18 @@ extern int soft_i2c_gpio_scl;
>  	"pxefile_addr_r=" PXEFILE_ADDR_R "\0" \
>  	"ramdisk_addr_r=" RAMDISK_ADDR_R "\0"
>  
> +#ifdef CONFIG_ARM64
> +
> +#define MEM_LAYOUT_ENV_EXTRA_SETTINGS \
> +	"kernel_comp_addr_r=" KERNEL_COMP_ADDR_R "\0" \
> +	"kernel_comp_size=" KERNEL_COMP_SIZE "\0"
> +
> +#else
> +
> +#define MEM_LAYOUT_ENV_EXTRA_SETTINGS ""
> +
> +#endif
> +
>  #define DFU_ALT_INFO_RAM \
>  	"dfu_alt_info_ram=" \
>  	"kernel ram " KERNEL_ADDR_R " 0x1000000;" \
> @@ -487,6 +501,7 @@ extern int soft_i2c_gpio_scl;
>  #define CONFIG_EXTRA_ENV_SETTINGS \
>  	CONSOLE_ENV_SETTINGS \
>  	MEM_LAYOUT_ENV_SETTINGS \
> +	MEM_LAYOUT_ENV_EXTRA_SETTINGS \
>  	DFU_ALT_INFO_RAM \
>  	"fdtfile=" FDTFILE "\0" \
>  	"console=ttyS0,115200\0" \
>