From 53059bda06c14a8fb559e4b6c42de2c9dd9ce3f8 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Wed, 25 Sep 2013 12:21:35 +0100 Subject: xen: arm: handle new 64-bit zImage magic numbers Upstream commit 4370eec05a88 "arm64: Expand arm64 image header" ended up changing the zImage magic (which was actually the initial branch instruction encoding!). The new header has a proper magic number at a fixed location. Support that as well as the original magic. Signed-off-by: Ian Campbell Acked-by: Tim Deegan --- xen/arch/arm/kernel.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'xen') diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c index 7a91d605e4..6d2c164799 100644 --- a/xen/arch/arm/kernel.c +++ b/xen/arch/arm/kernel.c @@ -27,7 +27,8 @@ #define ZIMAGE32_MAGIC 0x016f2818 -#define ZIMAGE64_MAGIC 0x14000008 +#define ZIMAGE64_MAGIC_V0 0x14000008 +#define ZIMAGE64_MAGIC_V1 0x644d5241 /* "ARM\x64" */ struct minimal_dtb_header { uint32_t magic; @@ -126,11 +127,16 @@ static int kernel_try_zimage64_prepare(struct kernel_info *info, { /* linux/Documentation/arm64/booting.txt */ struct { - uint32_t magic; + uint32_t magic0; uint32_t res0; uint64_t text_offset; /* Image load offset */ uint64_t res1; uint64_t res2; + uint64_t res3; + uint64_t res4; + uint64_t res5; + uint32_t magic1; + uint32_t res6; } zimage; uint64_t start, end; @@ -139,7 +145,8 @@ static int kernel_try_zimage64_prepare(struct kernel_info *info, copy_from_paddr(&zimage, addr, sizeof(zimage), DEV_SHARED); - if (zimage.magic != ZIMAGE64_MAGIC) + if ( zimage.magic0 != ZIMAGE64_MAGIC_V0 && + zimage.magic1 != ZIMAGE64_MAGIC_V1 ) return -EINVAL; /* Currently there is no length in the header, so just use the size */ -- cgit v1.2.3