diff options
Diffstat (limited to 'Documentation/i386/boot.txt')
-rw-r--r-- | Documentation/i386/boot.txt | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/Documentation/i386/boot.txt b/Documentation/i386/boot.txt index 05c24dfd7ecf..2eb16100bb3f 100644 --- a/Documentation/i386/boot.txt +++ b/Documentation/i386/boot.txt | |||
@@ -170,8 +170,8 @@ Offset Proto Name Meaning | |||
170 | 0238/4 2.06+ cmdline_size Maximum size of the kernel command line | 170 | 0238/4 2.06+ cmdline_size Maximum size of the kernel command line |
171 | 023C/4 2.07+ hardware_subarch Hardware subarchitecture | 171 | 023C/4 2.07+ hardware_subarch Hardware subarchitecture |
172 | 0240/8 2.07+ hardware_subarch_data Subarchitecture-specific data | 172 | 0240/8 2.07+ hardware_subarch_data Subarchitecture-specific data |
173 | 0248/4 2.08+ compressed_payload_offset | 173 | 0248/4 2.08+ payload_offset Offset of kernel payload |
174 | 024C/4 2.08+ compressed_payload_length | 174 | 024C/4 2.08+ payload_length Length of kernel payload |
175 | 175 | ||
176 | (1) For backwards compatibility, if the setup_sects field contains 0, the | 176 | (1) For backwards compatibility, if the setup_sects field contains 0, the |
177 | real value is 4. | 177 | real value is 4. |
@@ -514,22 +514,24 @@ Protocol: 2.07+ | |||
514 | 514 | ||
515 | A pointer to data that is specific to hardware subarch | 515 | A pointer to data that is specific to hardware subarch |
516 | 516 | ||
517 | Field name: compressed_payload_offset | 517 | Field name: payload_offset |
518 | Type: read | 518 | Type: read |
519 | Offset/size: 0x248/4 | 519 | Offset/size: 0x248/4 |
520 | Protocol: 2.08+ | 520 | Protocol: 2.08+ |
521 | 521 | ||
522 | If non-zero then this field contains the offset from the end of the | 522 | If non-zero then this field contains the offset from the end of the |
523 | real-mode code to the compressed payload. The compression format | 523 | real-mode code to the payload. |
524 | should be determined using the standard magic number, currently only | 524 | |
525 | gzip is used. | 525 | The payload may be compressed. The format of both the compressed and |
526 | uncompressed data should be determined using the standard magic | ||
527 | numbers. Currently only gzip compressed ELF is used. | ||
526 | 528 | ||
527 | Field name: compressed_payload_length | 529 | Field name: payload_length |
528 | Type: read | 530 | Type: read |
529 | Offset/size: 0x24c/4 | 531 | Offset/size: 0x24c/4 |
530 | Protocol: 2.08+ | 532 | Protocol: 2.08+ |
531 | 533 | ||
532 | The length of the compressed payload. | 534 | The length of the payload. |
533 | 535 | ||
534 | **** THE IMAGE CHECKSUM | 536 | **** THE IMAGE CHECKSUM |
535 | 537 | ||