[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH RFC 12/15] libxc: support for arm64 Image format
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; + + entry_addr = v_start; + + /* find kernel segment */ + dom->kernel_seg.vstart = v_start; + dom->kernel_seg.vend = v_start + dom->kernel_size; + + dom->parms.virt_entry = entry_addr; + dom->parms.virt_base = rambase; + + dom->guest_type = "xen-3.0-aarch64"; + DOMPRINTF("%s: %s: 0x%" PRIx64 " -> 0x%" PRIx64 "", + __FUNCTION__, dom->guest_type, + dom->kernel_seg.vstart, dom->kernel_seg.vend); + + return 0; +} + +/* ------------------------------------------------------------ */ /* Common zImage Support */ /* ------------------------------------------------------------ */ @@ -163,9 +243,17 @@ static struct xc_dom_loader zimage32_loader = { .loader = xc_dom_load_zimage_kernel, }; +static struct xc_dom_loader zimage64_loader = { + .name = "Linux zImage (ARM64)", + .probe = xc_dom_probe_zimage64_kernel, + .parser = xc_dom_parse_zimage64_kernel, + .loader = xc_dom_load_zimage_kernel, +}; + static void __init register_loader(void) { xc_dom_register_loader(&zimage32_loader); + xc_dom_register_loader(&zimage64_loader); } /* -- 1.7.10.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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