[PATCH v2 3/4] spl: fit: support for booting a GZIP-compressed U-boot binary

[Kever Yang]

On 2023/7/25 11:51, Manoj Sai wrote:
> If GZIP Compression support is enabled, GZIP compressed U-Boot binary
> will be at a specified RAM location which is defined at
> CONFIG_SYS_LOAD_ADDR and will be assign it as the source address.
>
> gunzip function in spl_load_fit_image ,will decompress the GZIP
> compressed U-Boot binary which is placed at
> source address(CONFIG_SYS_LOAD_ADDR)  to the default
> CONFIG_SYS_TEXT_BASE location.
>
> spl_load_fit_image function will load the decompressed U-Boot
> binary, which is placed at the CONFIG_SYS_TEXT_BASE location.
>
> Signed-off-by: Manoj Sai <abbaraju.manojsai at amarulasolutions.com>
> Signed-off-by: Suniel Mahesh <sunil at amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>   common/spl/spl_fit.c |  7 +++++--
>   include/spl.h        | 10 ++++++++++
>   2 files changed, 15 insertions(+), 2 deletions(-)
>
> diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
> index 730639f756..d728ac71fc 100644
> --- a/common/spl/spl_fit.c
> +++ b/common/spl/spl_fit.c
> @@ -239,7 +239,7 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
>   	bool external_data = false;
>   
>   	if (IS_ENABLED(CONFIG_SPL_FPGA) ||
> -	    (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP))) {
> +	    (IS_ENABLED(CONFIG_SPL_OS_BOOT) && spl_decompression_enabled())) {
>   		if (fit_image_get_type(fit, node, &type))
>   			puts("Cannot get image type.\n");
>   		else
> @@ -281,7 +281,10 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
>   			return 0;
>   		}
>   
> -		src_ptr = map_sysmem(ALIGN(load_addr, ARCH_DMA_MINALIGN), len);
> +		if ((IS_ENABLED(CONFIG_SPL_GZIP) && image_comp == IH_COMP_GZIP))
> +			src_ptr = map_sysmem(ALIGN(CONFIG_SYS_LOAD_ADDR, ARCH_DMA_MINALIGN), len);
> +		else
> +			src_ptr = map_sysmem(ALIGN(load_addr, ARCH_DMA_MINALIGN), len);
>   		length = len;
>   
>   		overhead = get_aligned_image_overhead(info, offset);
> diff --git a/include/spl.h b/include/spl.h
> index 92bcaa90a4..088479e357 100644
> --- a/include/spl.h
> +++ b/include/spl.h
> @@ -897,4 +897,14 @@ struct legacy_img_hdr *spl_get_load_buffer(ssize_t offset, size_t size);
>   
>   void board_boot_order(u32 *spl_boot_list);
>   void spl_save_restore_data(void);
> +
> +/*
> + * spl_decompression_enabled() - check decompression support is enabled for SPL build
> + *
> + * Returns  true  if decompression support is enabled, else False
> + */
> +static inline bool spl_decompression_enabled(void)
> +{
> +	return (IS_ENABLED(CONFIG_SPL_GZIP) || IS_ENABLED(CONFIG_SPL_LZMA));
> +}
>   #endif