Re: [PATCH] kwbimage_v0: add support to detect and boot a mvebu v0 image

[Sascha Hauer <s.hauer@pengutronix.de>]

On Thu, May 31, 2018 at 11:28:17PM +0200, Uwe Kleine-König wrote:
> The differences between v0 and v1 of the mvebu kwbimage are small enough
> that the function to boot such an image can be shared between both
> variants.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
>  arch/arm/mach-mvebu/kwbootimage.c | 11 +++++++++--
>  common/filetype.c                 | 22 +++++++++++++++++-----
>  include/filetype.h                |  1 +
>  3 files changed, 27 insertions(+), 7 deletions(-)

Applied, thanks

Sascha

> 
> diff --git a/arch/arm/mach-mvebu/kwbootimage.c b/arch/arm/mach-mvebu/kwbootimage.c
> index 8d364ceb7b31..e379d732fed6 100644
> --- a/arch/arm/mach-mvebu/kwbootimage.c
> +++ b/arch/arm/mach-mvebu/kwbootimage.c
> @@ -10,7 +10,7 @@
>  #include <asm/unaligned.h>
>  #include <mach/common.h>
>  
> -static int do_bootm_kwbimage_v1(struct image_data *data)
> +static int do_bootm_kwbimage_v0_v1(struct image_data *data)
>  {
>  	int fd, ret;
>  	loff_t offset;
> @@ -69,14 +69,21 @@ out_free:
>  	return ret;
>  }
>  
> +static struct image_handler image_handler_kwbimage_v0_handler = {
> +	.name = "MVEBU kwbimage v0",
> +	.bootm = do_bootm_kwbimage_v0_v1,
> +	.filetype = filetype_kwbimage_v0,
> +};
> +
>  static struct image_handler image_handler_kwbimage_v1_handler = {
>  	.name = "MVEBU kwbimage v1",
> -	.bootm = do_bootm_kwbimage_v1,
> +	.bootm = do_bootm_kwbimage_v0_v1,
>  	.filetype = filetype_kwbimage_v1,
>  };
>  
>  static int mvebu_register_kwbimage_image_handler(void)
>  {
> +	register_image_handler(&image_handler_kwbimage_v0_handler);
>  	register_image_handler(&image_handler_kwbimage_v1_handler);
>  
>  	return 0;
> diff --git a/common/filetype.c b/common/filetype.c
> index 444ec14cc4b6..bb807df721d9 100644
> --- a/common/filetype.c
> +++ b/common/filetype.c
> @@ -65,7 +65,8 @@ static const struct filetype_str filetype_str[] = {
>  	[filetype_exe] = { "MS-DOS executable", "exe" },
>  	[filetype_mxs_bootstream] = { "Freescale MXS bootstream", "mxsbs" },
>  	[filetype_socfpga_xload] = { "SoCFPGA prebootloader image", "socfpga-xload" },
> -	[filetype_kwbimage_v1] = { "MVEBU kwbimage (v1)", "kwb" },
> +	[filetype_kwbimage_v0] = { "MVEBU kwbimage (v0)", "kwb0" },
> +	[filetype_kwbimage_v1] = { "MVEBU kwbimage (v1)", "kwb1" },
>  	[filetype_android_sparse] = { "Android sparse image", "sparse" },
>  	[filetype_arm64_linux_image] = { "ARM aarch64 Linux image", "aarch64-linux" },
>  };
> @@ -302,10 +303,21 @@ enum filetype file_detect_type(const void *_buf, size_t bufsize)
>  	if ((buf8[0] == 0x5a || buf8[0] == 0x69 || buf8[0] == 0x78 ||
>  	     buf8[0] == 0x8b || buf8[0] == 0x9c) &&
>  	    buf8[0x1] == 0 && buf8[0x2] == 0 && buf8[0x3] == 0 &&
> -	    buf8[0x8] == 1 && buf8[0x18] == 0 && buf8[0x1b] == 0 &&
> -	    buf8[0x1c] == 0 && buf8[0x1d] == 0 &&
> -	    (buf8[0x1e] == 0 || buf8[0x1e] == 1))
> -		return filetype_kwbimage_v1;
> +	    buf8[0x18] == 0 && buf8[0x1b] == 0 && buf8[0x1c] == 0) {
> +		unsigned char sum = 0;
> +		int i;
> +
> +		for (i = 0; i <= 0x1e; ++i)
> +			sum += buf8[i];
> +
> +		if (sum == buf8[0x1f] && buf8[0x8] == 0)
> +			return filetype_kwbimage_v0;
> +
> +		if (sum == buf8[0x1f] &&
> +		    buf8[0x8] == 1 && buf8[0x1d] == 0 &&
> +		    (buf8[0x1e] == 0 || buf8[0x1e] == 1))
> +			return filetype_kwbimage_v1;
> +	}
>  
>  	if (is_sparse_image(_buf))
>  		return filetype_android_sparse;
> diff --git a/include/filetype.h b/include/filetype.h
> index 9986938ddb7c..d9963a24496c 100644
> --- a/include/filetype.h
> +++ b/include/filetype.h
> @@ -38,6 +38,7 @@ enum filetype {
>  	filetype_xz_compressed,
>  	filetype_mxs_bootstream,
>  	filetype_socfpga_xload,
> +	filetype_kwbimage_v0,
>  	filetype_kwbimage_v1,
>  	filetype_android_sparse,
>  	filetype_arm64_linux_image,
> -- 
> 2.17.0
> 
> 
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