Skip to content

add s390 buildroot and qemu commands #28

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
nickdesaulniers merged 2 commits into from
Jan 8, 2021
Merged

add s390 buildroot and qemu commands #28

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
50f50da
add s390 buildroot and qemu commands
nickdesaulniers Aug 13, 2020
d1013e3
update readme for s390 support
nickdesaulniers Jan 8, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions README.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ Required parameters:
* ppc64
* ppc64le
* riscv
* s390
* x86
* x86_64

Expand Down
8 changes: 7 additions & 1 deletion boot-qemu.sh
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ function parse_parameters() {
-a | --arch | --architecture)
shift
case ${1} in
arm32_v5 | arm32_v6 | arm32_v7 | arm64 | mips | mipsel | ppc32 | ppc64 | ppc64le | riscv | x86 | x86_64) ARCH=${1} ;;
arm32_v5 | arm32_v6 | arm32_v7 | arm64 | mips | mipsel | ppc32 | ppc64 | ppc64le | riscv | s390 | x86 | x86_64) ARCH=${1} ;;
*) die "Invalid --arch value '${1}'" ;;
esac
;;
Expand Down Expand Up @@ -203,6 +203,12 @@ function setup_qemu_args() {
QEMU=(qemu-system-riscv64)
;;

s390)
KIMAGE=bzImage
QEMU_ARCH_ARGS=(-M s390-ccw-virtio)
QEMU=(qemu-system-s390x)

@davidhildenbrand davidhildenbrand Jan 9, 2021

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Using "-smp", as done on x86-64 AFAIKs might reduce boot times further. SMP under QEMU/TCG with MTTCG (one thread per vCPU, usually the default) has been working reliably for some years now.

;;

x86 | x86_64)
KIMAGE=bzImage
APPEND_STRING+="console=ttyS0 "
Expand Down
2 changes: 1 addition & 1 deletion buildroot/rebuild.sh
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@ CONFIGS=()
while ((${#})); do
case ${1} in
all) for CONFIG in *.config; do CONFIGS+=("../${CONFIG}"); done ;;
arm64 | arm | mips | mipsel | ppc32 | ppc64 | ppc64le | riscv | x86 | x86_64) CONFIGS+=("../${1}.config") ;;
arm64 | arm | mips | mipsel | ppc32 | ppc64 | ppc64le | riscv | s390 | x86 | x86_64) CONFIGS+=("../${1}.config") ;;
*) die "Unknown parameter '${1}', exiting!" ;;
esac
shift
Expand Down
15 changes: 15 additions & 0 deletions buildroot/s390.config
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
BR2_s390x=y
BR2_OPTIMIZE_3=y
BR2_KERNEL_HEADERS_4_4=y
BR2_GCC_VERSION_8_X=y
BR2_TARGET_GENERIC_ROOT_PASSWD="root"
BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
BR2_ROOTFS_OVERLAY="../overlay-poweroff"
BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
BR2_PACKAGE_BASH=y
BR2_TARGET_ROOTFS_CPIO=y
# glibc required for s390, as per Ulrich Weigand.
BR2_TOOLCHAIN_USES_GLIBC=y
BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
BR2_TOOLCHAIN_BUILDROOT_LIBC="glibc"
# BR2_TARGET_ROOTFS_TAR is not set
Binary file added images/s390/rootfs.cpio.zst
View file
Open in desktop
Binary file not shown.