summaryrefslogtreecommitdiffstats
path: root/Documentation/kernel-parameters.txt
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:48:30 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:48:30 +0900
commit69019d77c71472428a5d67ab8bb7cfa9145000d0 (patch)
tree370f038a801c5ceee5266bf95944a458bcc0bfbf /Documentation/kernel-parameters.txt
parent6df1e7f2e96721dfdbfd8a034e52bc81916f978c (diff)
parent88392e9dd5a524b8194f1045369c7d0eb16d9f32 (diff)
downloadop-kernel-dev-69019d77c71472428a5d67ab8bb7cfa9145000d0.zip
op-kernel-dev-69019d77c71472428a5d67ab8bb7cfa9145000d0.tar.gz
Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 EFI changes from Ingo Molnar: "Main changes: - Add support for earlyprintk=efi which uses the EFI framebuffer. Very useful for debugging boot problems. - EFI stub support for large memory maps (more than 128 entries) - EFI ARM support - this was mostly done by generalizing x86 <-> ARM platform differences, such as by moving x86 EFI code into drivers/firmware/efi/ and sharing it with ARM. - Documentation updates - misc fixes" * 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits) x86/efi: Add EFI framebuffer earlyprintk support boot, efi: Remove redundant memset() x86/efi: Fix config_table_type array termination x86 efi: bugfix interrupt disabling sequence x86: EFI stub support for large memory maps efi: resolve warnings found on ARM compile efi: Fix types in EFI calls to match EFI function definitions. efi: Renames in handle_cmdline_files() to complete generalization. efi: Generalize handle_ramdisks() and rename to handle_cmdline_files(). efi: Allow efi_free() to be called with size of 0 efi: use efi_get_memory_map() to get final map for x86 efi: generalize efi_get_memory_map() efi: Rename __get_map() to efi_get_memory_map() efi: Move unicode to ASCII conversion to shared function. efi: Generalize relocate_kernel() for use by other architectures. efi: Move relocate_kernel() to shared file. efi: Enforce minimum alignment of 1 page on allocations. efi: Rename memory allocation/free functions efi: Add system table pointer argument to shared functions. efi: Move common EFI stub code from x86 arch code to common location ...
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt8
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 203f4a9..0fbde71 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -847,6 +847,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
earlyprintk= [X86,SH,BLACKFIN,ARM]
earlyprintk=vga
+ earlyprintk=efi
earlyprintk=xen
earlyprintk=serial[,ttySn[,baudrate]]
earlyprintk=serial[,0x...[,baudrate]]
@@ -860,7 +861,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
Append ",keep" to not disable it when the real console
takes over.
- Only vga or serial or usb debug port at a time.
+ Only one of vga, efi, serial, or usb debug port can
+ be used at a time.
Currently only ttyS0 and ttyS1 may be specified by
name. Other I/O ports may be explicitly specified
@@ -874,8 +876,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
Interaction with the standard serial driver is not
very good.
- The VGA output is eventually overwritten by the real
- console.
+ The VGA and EFI output is eventually overwritten by
+ the real console.
The xen output can only be used by Xen PV guests.
OpenPOWER on IntegriCloud