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| author | Peter Oberparleiter <oberpar@linux.ibm.com> | 2022-09-16 16:01:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-10 20:14:21 +0300 |
| commit | 6b24d9c2acdac63cb161f677a86a4e380523cf46 (patch) | |
| tree | d16cb5dfc61a5cb580761b784688ea87df4f7388 | |
| parent | efc6420d65ae90035dd4ad5322b2eef7acc5d516 (diff) | |
| download | linux-6b24d9c2acdac63cb161f677a86a4e380523cf46.tar.xz | |
s390/boot: add secure boot trailer
[ Upstream commit aa127a069ef312aca02b730d5137e1778d0c3ba7 ]
This patch enhances the kernel image adding a trailer as required for
secure boot by future firmware versions.
Cc: <stable@vger.kernel.org> # 5.2+
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/s390/boot/compressed/vmlinux.lds.S | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/s390/boot/compressed/vmlinux.lds.S b/arch/s390/boot/compressed/vmlinux.lds.S index 9427e2cd0c15..11bf3919610e 100644 --- a/arch/s390/boot/compressed/vmlinux.lds.S +++ b/arch/s390/boot/compressed/vmlinux.lds.S @@ -91,8 +91,17 @@ SECTIONS _compressed_start = .; *(.vmlinux.bin.compressed) _compressed_end = .; - FILL(0xff); - . = ALIGN(4096); + } + +#define SB_TRAILER_SIZE 32 + /* Trailer needed for Secure Boot */ + . += SB_TRAILER_SIZE; /* make sure .sb.trailer does not overwrite the previous section */ + . = ALIGN(4096) - SB_TRAILER_SIZE; + .sb.trailer : { + QUAD(0) + QUAD(0) + QUAD(0) + QUAD(0x000000207a49504c) } _end = .; |