diff options
| author | Richard W.M. Jones <rjones@redhat.com> | 2014-08-19 18:56:28 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-08-19 19:02:40 +0100 |
| commit | 6f5d3cbe8892367026526a7deed0ceecc700a7ad (patch) | |
| tree | 18357591448ac1f95e1482f3c3ef3e63117e7a6e /hw | |
| parent | 235e74afcb85285a8e35e75f0cb6e6811267bb75 (diff) | |
aarch64: Allow -kernel option to take a gzip-compressed kernel.
On aarch64 it is the bootloader's job to uncompress the kernel. UEFI
and u-boot bootloaders do this automatically when the kernel is
gzip-compressed.
However the qemu -kernel option does not do this. The following
command does not work:
qemu-system-aarch64 [...] -kernel /boot/vmlinuz
because it tries to execute the gzip-compressed data.
This commit lets gzip-compressed kernels be uncompressed
transparently.
Currently this is only done when emulating aarch64.
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1407831259-2115-3-git-send-email-rjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/arm/boot.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 12417617a3..e32f2f4158 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -514,6 +514,13 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) kernel_size = load_uimage(info->kernel_filename, &entry, NULL, &is_linux); } + /* On aarch64, it's the bootloader's job to uncompress the kernel. */ + if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64) && kernel_size < 0) { + entry = info->loader_start + kernel_load_offset; + kernel_size = load_image_gzipped(info->kernel_filename, entry, + info->ram_size - kernel_load_offset); + is_linux = 1; + } if (kernel_size < 0) { entry = info->loader_start + kernel_load_offset; kernel_size = load_image_targphys(info->kernel_filename, entry, |