From: Pratyush Anand <panand@redhat.com>
To: geoff@infradead.org
Cc: Pratyush Anand <panand@redhat.com>,
takahiro.akashi@linaro.org, kexec@lists.infradead.org
Subject: [PATCH RFC 0/3] arm64: disable/enable d-cache support for
Date: Mon, 4 May 2015 18:32:48 +0530 [thread overview]
Message-ID: <cover.1430742915.git.panand@redhat.com> (raw)
These patches add support for enable/disable d cache support. It reduces
time for sha verification from more than 2 min to 3-4 sec on my
platform.
There are some of the observation which I am unable to explain.
* It takes around 18 sec when I boot a kexec kernel and around 3-4 sec
* when I boot a crash kernel. In case of kexec kernel start of 1st
* segment is at 0000004000280000 and, end of last segment is at
* 00000040029c0000. In case of crash kernel start of 1st segment is at
* 00000041b9080000 and, end of last segment is at 00000041f9000000.
Pratyush Anand (3):
arm64: Add enable/disable d-cache support for purgatory
arm64: Pass RAM boundary to purgatory
arm64: Enable/disable D-cache before/after sha verification
kexec/arch/arm64/include/types.h | 16 +++
kexec/arch/arm64/kexec-arm64.c | 16 ++-
purgatory/arch/arm64/Makefile | 1 +
purgatory/arch/arm64/cache.S | 222 +++++++++++++++++++++++++++++++++
purgatory/arch/arm64/cache.h | 42 +++++++
purgatory/arch/arm64/entry.S | 10 ++
purgatory/arch/arm64/purgatory-arm64.c | 12 ++
7 files changed, 318 insertions(+), 1 deletion(-)
create mode 100644 kexec/arch/arm64/include/types.h
create mode 100644 purgatory/arch/arm64/cache.S
create mode 100644 purgatory/arch/arm64/cache.h
--
2.1.0
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next reply other threads:[~2015-05-04 13:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-04 13:02 Pratyush Anand [this message]
2015-05-04 13:02 ` [PATCH RFC 1/3] arm64: Add enable/disable d-cache support for purgatory Pratyush Anand
2015-05-04 13:02 ` [PATCH RFC 2/3] arm64: Pass RAM boundary to purgatory Pratyush Anand
2015-05-04 13:02 ` [PATCH RFC 3/3] arm64: Enable/disable D-cache before/after sha verification Pratyush Anand
2015-05-04 14:41 ` [PATCH RFC 0/3] arm64: disable/enable d-cache support for Pratyush Anand
2015-05-06 17:05 ` Geoff Levand
2015-05-06 17:37 ` Pratyush Anand
2015-05-07 4:25 ` AKASHI Takahiro
2015-05-07 4:54 ` Pratyush Anand
2015-05-07 5:08 ` AKASHI Takahiro
2015-05-07 15:32 ` Geoff Levand
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