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[PATCH v2 0/4] OpenRISC Device Tree Support
From: |
Stafford Horne |
Subject: |
[PATCH v2 0/4] OpenRISC Device Tree Support |
Date: |
Thu, 10 Feb 2022 21:33:59 +0900 |
Changes since v1:
- Fixed typos pointed out by Philippe
- Moved usage of machine state to patch 3/4
- added config dependency on FDT
This series adds device tree support for the OpenRISC SIM hardware.
The simulator will generate an FDT and pass it to the kernel.
For example:
qemu-system-or1k -cpu or1200 -M or1k-sim \
-kernel /home/shorne/work/linux/vmlinux \
-initrd /home/shorne/work/linux/initramfs.cpio.gz \
-serial mon:stdio -nographic -gdb tcp::10001 -m 32
Using the linux kernel or1ksim_defconfig we can remove the built-in
dts and the kernel will boot as expected. The real benefit here is
being able to specify an external initrd which qemu will load into
memory and the device tree will tell the kernel where to find it.
Stafford Horne (4):
hw/openrisc/openrisc_sim: Create machine state for or1ksim
hw/openrisc/openrisc_sim: Parameterize initialization
hw/openrisc/openrisc_sim; Add support for loading a device tree
hw/openrisc/openrisc_sim: Add support for initrd loading
configs/targets/or1k-softmmu.mak | 1 +
hw/openrisc/openrisc_sim.c | 261 +++++++++++++++++++++++++++++--
2 files changed, 248 insertions(+), 14 deletions(-)
--
2.31.1
- [PATCH v2 0/4] OpenRISC Device Tree Support,
Stafford Horne <=