Re: [Xen-devel] [PATCH v3 12/14] libxc: support for arm64 Image format

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 11/07/2013 04:44 PM, Ian Campbell wrote:
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> ---
>  tools/libxc/xc_dom_armzimageloader.c |   88 
> ++++++++++++++++++++++++++++++++++
>  1 file changed, 88 insertions(+)
> 
> diff --git a/tools/libxc/xc_dom_armzimageloader.c 
> b/tools/libxc/xc_dom_armzimageloader.c
> index 4e3f7ae..609d3a0 100644
> --- a/tools/libxc/xc_dom_armzimageloader.c
> +++ b/tools/libxc/xc_dom_armzimageloader.c
> @@ -129,6 +129,86 @@ static int xc_dom_parse_zimage32_kernel(struct 
> xc_dom_image *dom)
>  }
>  
>  /* ------------------------------------------------------------ */
> +/* 64-bit zImage Support                                        */
> +/* ------------------------------------------------------------ */
> +
> +#define ZIMAGE64_MAGIC_V0 0x14000008
> +#define ZIMAGE64_MAGIC_V1 0x644d5241 /* "ARM\x64" */
> +
> +/* linux/Documentation/arm64/booting.txt */
> +struct zimage64_hdr {
> +    uint32_t magic0;
> +    uint32_t res0;
> +    uint64_t text_offset;  /* Image load offset */
> +    uint64_t res1;
> +    uint64_t res2;
> +    /* zImage V1 only from here */
> +    uint64_t res3;
> +    uint64_t res4;
> +    uint64_t res5;
> +    uint32_t magic1;
> +    uint32_t res6;
> +};
> +static int xc_dom_probe_zimage64_kernel(struct xc_dom_image *dom)
> +{
> +    struct zimage64_hdr *zimage;
> +
> +    if ( dom->kernel_blob == NULL )
> +    {
> +        xc_dom_panic(dom->xch, XC_INTERNAL_ERROR,
> +                     "%s: no kernel image loaded", __FUNCTION__);
> +        return -EINVAL;
> +    }
> +
> +    if ( dom->kernel_size < sizeof(*zimage) )
> +    {
> +        xc_dom_printf(dom->xch, "%s: kernel image too small", __FUNCTION__);
> +        return -EINVAL;
> +    }
> +
> +    zimage =  dom->kernel_blob;
> +    if ( zimage->magic0 != ZIMAGE64_MAGIC_V0 &&
> +         zimage->magic1 != ZIMAGE64_MAGIC_V1 )
> +    {
> +        xc_dom_printf(dom->xch, "%s: kernel is not an arm64 Image", 
> __FUNCTION__);
> +        return -EINVAL;
> +    }
> +
> +    return 0;
> +}
> +
> +static int xc_dom_parse_zimage64_kernel(struct xc_dom_image *dom)
> +{
> +    struct zimage64_hdr *zimage;
> +    uint32_t entry_addr;
> +    uint64_t v_start, v_end;
> +    uint64_t rambase = dom->rambase_pfn << XC_PAGE_SHIFT;
> +
> +    DOMPRINTF_CALLED(dom->xch);
> +
> +    zimage = dom->kernel_blob;
> +
> +    v_start = rambase + zimage->text_offset;
> +    v_end = v_start + dom->kernel_size;

You define v_end which is not use in the function.

-- 
Julien Grall

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