Document POST codes emitted by LinuxBIOSv2.

The list was created by Richard Smith <>, see

It is probably not complete, yet.

(Closes #74)

Signed-off-by: Uwe Hermann <>
Acked-by: Stefan Reinauer <>

git-svn-id: svn:// 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/documentation/POSTCODES b/documentation/POSTCODES
new file mode 100644
index 0000000..aa4f258
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+LinuxBIOS POST Codes
+This is an (incomplete) list of POST codes emitted by LinuxBIOSv2.
+0x10 Entry into protected mode
+0x01 Entry into 'crt0.s' reset code jumps to here
+0x11 Start copying LinuxBIOS to RAM with decompression if compressed
+0x12 Copy/decompression finished jumping to RAM
+0x80 Entry into LinuxBIOS in RAM
+0x13 Entry into c_start
+0xfe Pre call to hardwaremain()
+0x39 Console is initialized
+0x40 Console boot message succeeded
+0x66 Devices have been enumerated
+0x88 Devices have been configured
+0x89 Devices have been enabled
+0xf8 Entry into elf boot
+0xf3 Jumping to payload
+Errors (used in several places):
+0xee Not supposed to get here
+0xff Elfload fail or die() called