| Message ID | 20240606133628.3330423-1-luca.fancellu@arm.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add Armv8-R AArch64 support | expand |
Hi Mark, This serie should have been sent to you, but I did a mess sending it only to the mailing list, this is a convenient link to the changes: https://lore.kernel.org/linux-arm-kernel/20240606133628.3330423-1-luca.fancellu@arm.com/T/#t > On 6 Jun 2024, at 14:36, Luca Fancellu <Luca.Fancellu@arm.com> wrote: > > Currently, we cannot boot Linux with boot-wrapper on Armv8-R AArch64: > 1. The Armv8-R AArch64 profile does not support the EL3. > 2. The Armv8-R AArch64 EL2 only supports a PMSA, which Linux does not > support. So it's necessary to drop into EL1 before entering the kernel. > 3. There is no EL2 booting code for Armv8-R AArch64 and no > configuration for dropping to EL1 in boot-wrapper. > > These patches enable boot-wrapper booting Linux with Armv8-R AArch64. > > This is a rework and rebase of a serie already present upstream [1], apart > from patch 3 which is addressing a small bug and patch 6 and 7 which are > introducing support for PSCI boot through hvc conduit and Xen boot under Armv8-R > AArch64. > > [1] https://patchwork.kernel.org/project/linux-arm-kernel/cover/20210525062509.201464-1-jaxson.han@arm.com/ > > Luca Fancellu (7): > aarch64: Rename labels and prepare for lower EL booting > aarch64: Prepare for lower EL booting > aarch64: Remove TSCXT bit set from SCTLR_EL2_RESET > gic-v3: Prepare for gicv3 with EL2 > aarch64: Introduce EL2 boot code for Armv8-R AArch64 > aarch64: Support PSCI for Armv8-R AArch64 > aarch64: Start Xen on Armv8-R at EL2 > > Makefile.am | 6 ++- > arch/aarch32/include/asm/gic-v3.h | 7 +++ > arch/aarch64/boot.S | 86 ++++++++++++++++++++++++++++--- > arch/aarch64/include/asm/cpu.h | 14 ++++- > arch/aarch64/include/asm/gic-v3.h | 20 +++++-- > arch/aarch64/init.c | 39 ++++++++++++-- > common/gic-v3.c | 2 +- > configure.ac | 19 +++++-- > 8 files changed, 170 insertions(+), 23 deletions(-) Cheers, Luca