From: Jaxson Han <jaxson.han@arm.com>
To: mark.rutland@arm.com, andre.przywara@arm.com
Cc: linux-arm-kernel@lists.infradead.org, wei.chen@arm.com,
jaxson.han@arm.com
Subject: [boot-wrapper PATCH v2 0/8] Add Armv8-R AArch64 support
Date: Fri, 21 May 2021 18:47:59 +0800 [thread overview]
Message-ID: <20210521104807.138269-1-jaxson.han@arm.com> (raw)
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:
Patch 1 allows boot-wrapper to boot on more platforms.
Patch 2 renames some labels as preparations for booting from lower EL.
Patch 3 remove the redundant setup_stack.
Patch 4-5 does some preparations for lower EL booting.
Patch 6 prepares for GICv3 initialization with EL2.
Patch 7 adds necessary EL2 registers.
Patch 8 adds auto-detection for Armv8-R AArch64 to drop into EL1
before entering the kernel.
Refs: Arm Architecture Reference Manual Supplement - Armv8, for
Armv8-R AArch64 architecture profile.
[https://developer.arm.com/documentation/ddi0600/latest/]
---------
v1 -> v2:
1. Split Patch 2 to Patch 2,3,4.
2. Slightly refine some comments.
3. More checks on Armv8-R AArch64.
4. Force setting HCR_EL2 instead of modifying.
Jaxson Han (8):
Decouple V2M_SYS config by auto-detect dtb node
aarch64: Rename labels and prepare for lower EL booting
aarch64: Remove the redundant setup_stack
aarch64: Prepare for EL1 booting
aarch64: Prepare for lower EL booting
gic-v3: Prepare for gicv3 with EL2
aarch64: Prepare for booting with EL2
aarch64: Introduce EL2 boot code for Armv8-R AArch64
Makefile.am | 4 +-
arch/aarch32/include/asm/gic-v3.h | 7 ++
arch/aarch64/boot.S | 146 +++++++++++++++++++++++++++---
arch/aarch64/include/asm/cpu.h | 3 +
arch/aarch64/include/asm/gic-v3.h | 38 +++++++-
arch/aarch64/psci.S | 13 +--
arch/aarch64/spin.S | 8 +-
arch/aarch64/utils.S | 10 +-
gic-v3.c | 2 +-
platform.c | 4 +
10 files changed, 203 insertions(+), 32 deletions(-)
--
2.25.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-05-21 10:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 10:47 Jaxson Han [this message]
2021-05-21 10:48 ` [boot-wrapper PATCH v2 1/8] Decouple V2M_SYS config by auto-detect dtb node Jaxson Han
2021-05-21 10:48 ` [boot-wrapper PATCH v2 2/8] aarch64: Rename labels and prepare for lower EL booting Jaxson Han
2021-05-24 9:32 ` Andre Przywara
2021-05-25 1:54 ` Jaxson Han
2021-05-21 10:48 ` [boot-wrapper PATCH v2 3/8] aarch64: Remove the redundant setup_stack Jaxson Han
2021-05-24 9:32 ` Andre Przywara
2021-05-21 10:48 ` [boot-wrapper PATCH v2 4/8] aarch64: Prepare for EL1 booting Jaxson Han
2021-05-24 9:32 ` Andre Przywara
2021-05-21 10:48 ` [boot-wrapper PATCH v2 5/8] aarch64: Prepare for lower EL booting Jaxson Han
2021-05-24 9:33 ` Andre Przywara
2021-05-21 10:48 ` [boot-wrapper PATCH v2 6/8] gic-v3: Prepare for gicv3 with EL2 Jaxson Han
2021-05-24 9:33 ` Andre Przywara
2021-05-21 10:48 ` [boot-wrapper PATCH v2 7/8] aarch64: Prepare for booting " Jaxson Han
2021-05-24 9:33 ` Andre Przywara
2021-05-21 10:48 ` [boot-wrapper PATCH v2 8/8] aarch64: Introduce EL2 boot code for Armv8-R AArch64 Jaxson Han
2021-05-24 10:19 ` Andre Przywara
2021-05-25 1:59 ` Jaxson Han
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210521104807.138269-1-jaxson.han@arm.com \
--to=jaxson.han@arm.com \
--cc=andre.przywara@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=mark.rutland@arm.com \
--cc=wei.chen@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).