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-rw-r--r--Documentation/x86/boot.txt7
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt
index 9efceff51bfb..406d82d5d2bb 100644
--- a/Documentation/x86/boot.txt
+++ b/Documentation/x86/boot.txt
@@ -373,7 +373,7 @@ Protocol: 2.00+
1 Loadlin
2 bootsect-loader (0x20, all other values reserved)
3 Syslinux
- 4 Etherboot/gPXE
+ 4 Etherboot/gPXE/iPXE
5 ELILO
7 GRUB
8 U-Boot
@@ -381,6 +381,7 @@ Protocol: 2.00+
A Gujin
B Qemu
C Arcturus Networks uCbootloader
+ D kexec-tools
E Extended (see ext_loader_type)
F Special (0xFF = undefined)
10 Reserved
@@ -1013,7 +1014,7 @@ boot_params as that of 16-bit boot protocol, the boot loader should
also fill the additional fields of the struct boot_params as that
described in zero-page.txt.
-After setupping the struct boot_params, the boot loader can load the
+After setting up the struct boot_params, the boot loader can load the
32/64-bit kernel in the same way as that of 16-bit boot protocol.
In 32-bit boot protocol, the kernel is started by jumping to the
@@ -1023,7 +1024,7 @@ In 32-bit boot protocol, the kernel is started by jumping to the
At entry, the CPU must be in 32-bit protected mode with paging
disabled; a GDT must be loaded with the descriptors for selectors
__BOOT_CS(0x10) and __BOOT_DS(0x18); both descriptors must be 4G flat
-segment; __BOOS_CS must have execute/read permission, and __BOOT_DS
+segment; __BOOT_CS must have execute/read permission, and __BOOT_DS
must have read/write permission; CS must be __BOOT_CS and DS, ES, SS
must be __BOOT_DS; interrupt must be disabled; %esi must hold the base
address of the struct boot_params; %ebp, %edi and %ebx must be zero.