Commit 1c3377be authored by Ingo Molnar's avatar Ingo Molnar
Browse files

x86/boot/Documentation: Prefix hexadecimal literals with 0x 

The x86 bootloader ID specification text uses hexadecimal
values without a 0x prefix:

        D  kexec-tools
        E  Extended (see ext_loader_type)
        F  Special (0xFF = undefined)
        10 Reserved
        11 Minimal Linux Bootloader
           <http://sebastian-plotz.blogspot.de

>
        12 OVMF UEFI virtualization stack
        13 barebox

Which beyond the ambiguity of '13' in isolation, also
made me fail a grep -wi '0xd' when I was looking for
the kexec bootloader ID definition and caused quite
a bit of head-scratching before I found out why it
didn't show up.

Furthermore, the actual explanatory text uses the 0x
prefix:

  For boot loader IDs above T = 0xD, write T = 0xE to this field and
  write the extended ID minus 0x10 to the ext_loader_type field.
  Similarly, the ext_loader_ver field can be used to provide more than
  four bits for the bootloader version.

So make it all both unambiguous, easy to grep and consistent
across the entire documentation by prefixing the IDs with 0x.

Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org
parent c7957da7

Documentation/arch/x86/boot.rst

+23 −23
Original line number Diff line number Diff line
@@ -431,31 +431,31 @@ Protocol: 2.00+ 
   ext_loader_type <- 0x05

   ext_loader_ver  <- 0x23



  Assigned boot loader IDs (hexadecimal):

  Assigned boot loader IDs:



	== =======================================

	0  LILO

	0x0  LILO

	     (0x00 reserved for pre-2.00 bootloader)

	1  Loadlin

	2  bootsect-loader

	0x1  Loadlin

	0x2  bootsect-loader

	     (0x20, all other values reserved)

	3  Syslinux

	4  Etherboot/gPXE/iPXE

	5  ELILO

	7  GRUB

	8  U-Boot

	9  Xen

	A  Gujin

	B  Qemu

	C  Arcturus Networks uCbootloader

	D  kexec-tools

	E  Extended (see ext_loader_type)

	F  Special (0xFF = undefined)

	10 Reserved

	11 Minimal Linux Bootloader

	0x3  Syslinux

	0x4  Etherboot/gPXE/iPXE

	0x5  ELILO

	0x7  GRUB

	0x8  U-Boot

	0x9  Xen

	0xA  Gujin

	0xB  Qemu

	0xC  Arcturus Networks uCbootloader

	0xD  kexec-tools

	0xE  Extended (see ext_loader_type)

	0xF  Special (0xFF = undefined)

	0x10 Reserved

	0x11 Minimal Linux Bootloader

	     <http://sebastian-plotz.blogspot.de>

	12 OVMF UEFI virtualization stack

	13 barebox

	0x12 OVMF UEFI virtualization stack

	0x13 barebox

	== =======================================



  Please contact <hpa@zytor.com> if you need a bootloader ID value assigned.