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authorIngo Molnar <mingo@kernel.org>2025-12-03 20:29:59 +0300
committerIngo Molnar <mingo@kernel.org>2025-12-03 20:49:09 +0300
commit1c3377bee2127f98f16705376a36326c98113d1c (patch)
tree994a88cc22b2e872ea940fff871de7eea8549358
parentc7957da77708c74a95d60340c6d3c1a3617cd248 (diff)
downloadlinux-1c3377bee2127f98f16705376a36326c98113d1c.tar.xz
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: Ingo Molnar <mingo@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org
-rw-r--r--Documentation/arch/x86/boot.rst46
1 files changed, 23 insertions, 23 deletions
diff --git a/Documentation/arch/x86/boot.rst b/Documentation/arch/x86/boot.rst
index b0f648b5c05b..42f50fa0ebc3 100644
--- a/Documentation/arch/x86/boot.rst
+++ b/Documentation/arch/x86/boot.rst
@@ -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
- (0x00 reserved for pre-2.00 bootloader)
- 1 Loadlin
- 2 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
- <http://sebastian-plotz.blogspot.de>
- 12 OVMF UEFI virtualization stack
- 13 barebox
+ 0x0 LILO
+ (0x00 reserved for pre-2.00 bootloader)
+ 0x1 Loadlin
+ 0x2 bootsect-loader
+ (0x20, all other values reserved)
+ 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>
+ 0x12 OVMF UEFI virtualization stack
+ 0x13 barebox
== =======================================
Please contact <hpa@zytor.com> if you need a bootloader ID value assigned.