Difference between revisions of "SNI Monitor"

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(Boot)
Line 12: Line 12:
 
* Slice 10 - boot slice with BFS (Boot File System)
 
* Slice 10 - boot slice with BFS (Boot File System)
  
 +
http://penguin.cz/~mhi/fs/bfs/
 +
 +
== Boot CD-ROM ==
 +
 +
SINIX bootable CD-ROM contains ISO-9660 filesystem and IRIX Volume Header.
 +
 +
# dvhtool --device /dev/hdc --print-all
 +
----- partitions -----
 +
Part# 10, start 0, blks 76800, type Volume Header
 +
----- bootinfo -----
 +
Root partition: 0
 +
Swap partition: 0
 +
Bootfile: ""
 +
----- directory entries -----
 +
Entry #0, name "unix_410", start 49492, bytes 6639233
 +
Entry #1, name "sash_410", start 62460, bytes 439296
 +
Entry #2, name "sash_pci", start 78304, bytes 511869
 +
Entry #3, name "upde_410", start 75608, bytes 509856
 +
Entry #4, name "upde_pci", start 76604, bytes 869061
 +
Entry #5, name "miniroot", start 63320, bytes 6291456
 +
Entry #6, name "systest", start 79304, bytes 1916032
 +
 +
 +
# fdisk /dev/hdc
 +
You will not be able to write the partition table.
 +
Note: sector size is 2048 (not 512)
 +
 +
Command (m for help): p
 +
 +
Disk /dev/hdc (SGI disk label): 255 heads, 63 sectors, 15 cylinders
 +
Units = cylinders of 16065 * 512 bytes
 +
 +
----- partitions -----
 +
Pt#    Device  Info    Start      End  Sectors  Id  System
 +
11: /dev/hdc1              0        4    76800  0  SGI volhdr
 +
----- Bootinfo -----
 +
Bootfile:
 +
----- Directory Entries -----
 +
  0: unix_410  sector49492 size 6639233
 +
  1: sash_410  sector62460 size  439296
 +
  2: sash_pci  sector78304 size  511869
 +
  3: upde_410  sector75608 size  509856
 +
  4: upde_pci  sector76604 size  869061
 +
  5: miniroot  sector63320 size 6291456
 +
  6: systest    sector79304 size 1916032
  
 
== API ==
 
== API ==
 +
 +
SNI Monitor maintains a call vector at 0xbfc00000. Some calls are similar to the API calls used in the [[DECstation]] monitor.
  
 
== Bootlog ==
 
== Bootlog ==

Revision as of 01:19, 11 December 2005

SNI Monitor is a big-endian firmware for the Siemens Nixdorf RM-400 server (and others).

Boot process

SNI Monitor loads a secondary bootloader dkncr(0,0,10)sash which loads SINIX's dkncr(0,0,0)unix file.

SINIX uses System V slices :

  • Slice 1 - root file system
  • Slice 2 - swap
  • ...
  • Slice 10 - boot slice with BFS (Boot File System)

http://penguin.cz/~mhi/fs/bfs/

Boot CD-ROM

SINIX bootable CD-ROM contains ISO-9660 filesystem and IRIX Volume Header.

# dvhtool --device /dev/hdc --print-all
----- partitions -----
Part# 10, start 0, blks 76800, type Volume Header
----- bootinfo -----
Root partition: 0
Swap partition: 0
Bootfile: ""
----- directory entries -----
Entry #0, name "unix_410", start 49492, bytes 6639233
Entry #1, name "sash_410", start 62460, bytes 439296
Entry #2, name "sash_pci", start 78304, bytes 511869
Entry #3, name "upde_410", start 75608, bytes 509856
Entry #4, name "upde_pci", start 76604, bytes 869061
Entry #5, name "miniroot", start 63320, bytes 6291456
Entry #6, name "systest", start 79304, bytes 1916032


# fdisk /dev/hdc
You will not be able to write the partition table.
Note: sector size is 2048 (not 512)

Command (m for help): p

Disk /dev/hdc (SGI disk label): 255 heads, 63 sectors, 15 cylinders
Units = cylinders of 16065 * 512 bytes

----- partitions -----
Pt#    Device  Info     Start       End   Sectors  Id  System
11: /dev/hdc1               0         4     76800   0  SGI volhdr
----- Bootinfo -----
Bootfile:
----- Directory Entries -----
 0: unix_410   sector49492 size 6639233
 1: sash_410   sector62460 size  439296
 2: sash_pci   sector78304 size  511869
 3: upde_410   sector75608 size  509856
 4: upde_pci   sector76604 size  869061
 5: miniroot   sector63320 size 6291456
 6: systest    sector79304 size 1916032

API

SNI Monitor maintains a call vector at 0xbfc00000. Some calls are similar to the API calls used in the DECstation monitor.

Bootlog

SNI Monitor    Version 2.0018 SNI_R4000 OPT Wed May 25 11:39:36 WET 1994 liva20r
Memory size: 128 MBytes (0x8000000 bytes)
Bank #0:  64 MBytes             Bank #1:  64 MBytes
Bank #2:   0 MBytes             Bank #3:   0 MBytes
CPU : R4400  SC, Revision 5.0
Primary I-cache size: 16384 (0x4000) bytes
Primary D-cache size: 16384 (0x4000) bytes
Secondary cache size: 128 Kbytes (0x20000 bytes)
>> dkncr(0,0,10)sash
297872+130048+628272 entry: 0xa0600000
SNI Standalone Shell Version 3.0003 SNI_R4000 OPT Thu Jun 23 13:30:39 WET 1994 livsa542

Loading dkncr(0,0,0)unix
2128236+873536+557808 entry: 0x80021000

SNI  RM400
UNIX(R) SINIX-N Release 5.42 Version A0007