From: "Huang, Ying" <ying.huang@intel.com>
To: akpm@linux-foundation.org, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Andi Kleen <ak@suse.de>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Chandramouli Narayanan <mouli@linux.intel.com>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 3/3 -v4] x86_64 EFI runtime service support: document for EFI runtime services
Date: Thu, 25 Oct 2007 14:58:13 +0800 [thread overview]
Message-ID: <1193295493.23935.204.camel@caritas-dev.intel.com> (raw)
This patch adds document for EFI x86_64 runtime services support.
---
boot-options.txt | 12 +++++++++++-
uefi.txt | 10 ++++++++++
2 files changed, 21 insertions(+), 1 deletion(-)
Signed-off-by: Chandramouli Narayanan <mouli@linux.intel.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Index: linux-2.6.24-rc1/Documentation/x86_64/boot-options.txt
===================================================================
--- linux-2.6.24-rc1.orig/Documentation/x86_64/boot-options.txt 2007-10-25 13:58:14.000000000 +0800
+++ linux-2.6.24-rc1/Documentation/x86_64/boot-options.txt 2007-10-25 13:58:18.000000000 +0800
@@ -110,12 +110,15 @@
Rebooting
- reboot=b[ios] | t[riple] | k[bd] [, [w]arm | [c]old]
+ reboot=b[ios] | t[riple] | k[bd] | e[fi] [, [w]arm | [c]old]
bios Use the CPU reboot vector for warm reset
warm Don't set the cold reboot flag
cold Set the cold reboot flag
triple Force a triple fault (init)
kbd Use the keyboard controller. cold reset (default)
+ efi Use efi reset_system runtime service. If EFI is not configured or the
+ EFI reset does not work, the reboot path attempts the reset using
+ the keyboard controller.
Using warm reset will be much faster especially on big memory
systems because the BIOS will not go through the memory check.
@@ -300,4 +303,11 @@
newfallback: use new unwinder but fall back to old if it gets
stuck (default)
+EFI
+
+ noefi Disable EFI support
+
+ noefi_time Disable EFI time runtime service, programming CMOS
+ hardware directly
+
Miscellaneous
Index: linux-2.6.24-rc1/Documentation/x86_64/uefi.txt
===================================================================
--- linux-2.6.24-rc1.orig/Documentation/x86_64/uefi.txt 2007-10-25 13:58:18.000000000 +0800
+++ linux-2.6.24-rc1/Documentation/x86_64/uefi.txt 2007-10-25 13:58:18.000000000 +0800
@@ -19,6 +19,10 @@
- Build the kernel with the following configuration.
CONFIG_FB_EFI=y
CONFIG_FRAMEBUFFER_CONSOLE=y
+ If EFI runtime services are expected, the following configuration should
+ be selected.
+ CONFIG_EFI=y
+ CONFIG_EFI_VARS=y or m # optional
- Create a VFAT partition on the disk
- Copy the following to the VFAT partition:
elilo bootloader with x86_64 support, elilo configuration file,
@@ -27,3 +31,9 @@
can be found in the elilo sourceforge project.
- Boot to EFI shell and invoke elilo choosing the kernel image built
in first step.
+- If some or all EFI runtime services don't work, you can try following
+ kernel command line parameters to turn off some or all EFI runtime
+ services.
+ noefi turn off all EFI runtime services
+ noefi_time turn off EFI time runtime service
+ reboot_type=k turn off EFI reboot runtime service
reply other threads:[~2007-10-25 6:56 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=1193295493.23935.204.camel@caritas-dev.intel.com \
--to=ying.huang@intel.com \
--cc=ak@suse.de \
--cc=akpm@linux-foundation.org \
--cc=ebiederm@xmission.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=mouli@linux.intel.com \
--cc=tglx@linutronix.de \
/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