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-rw-r--r--Documentation/x86/boot.txt13
1 files changed, 7 insertions, 6 deletions
diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt
index 7b4596ac4120..12299697b7cd 100644
--- a/Documentation/x86/boot.txt
+++ b/Documentation/x86/boot.txt
@@ -158,7 +158,7 @@ Offset Proto Name Meaning
1580202/4 2.00+ header Magic signature "HdrS" 1580202/4 2.00+ header Magic signature "HdrS"
1590206/2 2.00+ version Boot protocol version supported 1590206/2 2.00+ version Boot protocol version supported
1600208/4 2.00+ realmode_swtch Boot loader hook (see below) 1600208/4 2.00+ realmode_swtch Boot loader hook (see below)
161020C/2 2.00+ start_sys The load-low segment (0x1000) (obsolete) 161020C/2 2.00+ start_sys_seg The load-low segment (0x1000) (obsolete)
162020E/2 2.00+ kernel_version Pointer to kernel version string 162020E/2 2.00+ kernel_version Pointer to kernel version string
1630210/1 2.00+ type_of_loader Boot loader identifier 1630210/1 2.00+ type_of_loader Boot loader identifier
1640211/1 2.00+ loadflags Boot protocol option flags 1640211/1 2.00+ loadflags Boot protocol option flags
@@ -170,10 +170,11 @@ Offset Proto Name Meaning
1700224/2 2.01+ heap_end_ptr Free memory after setup end 1700224/2 2.01+ heap_end_ptr Free memory after setup end
1710226/2 N/A pad1 Unused 1710226/2 N/A pad1 Unused
1720228/4 2.02+ cmd_line_ptr 32-bit pointer to the kernel command line 1720228/4 2.02+ cmd_line_ptr 32-bit pointer to the kernel command line
173022C/4 2.03+ initrd_addr_max Highest legal initrd address 173022C/4 2.03+ ramdisk_max Highest legal initrd address
1740230/4 2.05+ kernel_alignment Physical addr alignment required for kernel 1740230/4 2.05+ kernel_alignment Physical addr alignment required for kernel
1750234/1 2.05+ relocatable_kernel Whether kernel is relocatable or not 1750234/1 2.05+ relocatable_kernel Whether kernel is relocatable or not
1760235/3 N/A pad2 Unused 1760235/1 N/A pad2 Unused
1770236/2 N/A pad3 Unused
1770238/4 2.06+ cmdline_size Maximum size of the kernel command line 1780238/4 2.06+ cmdline_size Maximum size of the kernel command line
178023C/4 2.07+ hardware_subarch Hardware subarchitecture 179023C/4 2.07+ hardware_subarch Hardware subarchitecture
1790240/8 2.07+ hardware_subarch_data Subarchitecture-specific data 1800240/8 2.07+ hardware_subarch_data Subarchitecture-specific data
@@ -299,14 +300,14 @@ Protocol: 2.00+
299 e.g. 0x0204 for version 2.04, and 0x0a11 for a hypothetical version 300 e.g. 0x0204 for version 2.04, and 0x0a11 for a hypothetical version
300 10.17. 301 10.17.
301 302
302Field name: readmode_swtch 303Field name: realmode_swtch
303Type: modify (optional) 304Type: modify (optional)
304Offset/size: 0x208/4 305Offset/size: 0x208/4
305Protocol: 2.00+ 306Protocol: 2.00+
306 307
307 Boot loader hook (see ADVANCED BOOT LOADER HOOKS below.) 308 Boot loader hook (see ADVANCED BOOT LOADER HOOKS below.)
308 309
309Field name: start_sys 310Field name: start_sys_seg
310Type: read 311Type: read
311Offset/size: 0x20c/2 312Offset/size: 0x20c/2
312Protocol: 2.00+ 313Protocol: 2.00+
@@ -468,7 +469,7 @@ Protocol: 2.02+
468 zero, the kernel will assume that your boot loader does not support 469 zero, the kernel will assume that your boot loader does not support
469 the 2.02+ protocol. 470 the 2.02+ protocol.
470 471
471Field name: initrd_addr_max 472Field name: ramdisk_max
472Type: read 473Type: read
473Offset/size: 0x22c/4 474Offset/size: 0x22c/4
474Protocol: 2.03+ 475Protocol: 2.03+