qemu/docs/system/devices/keyboard.rst
Henrik Carlqvist 6b90a4cdc0 escc: emulate dip switch language layout settings on SUN keyboard
SUN Type 4, 5 and 5c keyboards have dip switches to choose the language layout
of the keyboard. Solaris makes an ioctl to query the value of the dipswitches
and uses that value to select keyboard layout.  Also the SUN bios like the one
in the file ss5.bin uses this value to support at least some keyboard layouts.
However, the OpenBIOS provided with qemu is hardcoded to always use an US
keyboard layout.

Before this patch, qemu allways gave dip switch value 0x21 (US keyboard),
this patch uses a command line switch like
"-global escc.chnA-sunkbd-layout=de" to select dip switch value. A table is
used to lookup values from arguments like:

-global escc.chnA-sunkbd-layout=fr
-global escc.chnA-sunkbd-layout=es

But the patch also accepts numeric dip switch values directly:

-global escc.chnA-sunkbd-layout=0x2b
-global escc.chnA-sunkbd-layout=43

Both values above are the same and select swedish keyboard as explained in
table 3-15 at
https://docs.oracle.com/cd/E19683-01/806-6642/new-43/index.html

Unless you want to do a full Solaris installation but happen to have
access to a Sun bios file, the easiest way to test that the patch works
is to:

qemu-system-sparc -global escc.chnA-sunkbd-layout=sv -bios /path/to/ss5.bin

If you already happen to have a Solaris installation in a qemu disk image
file you can easily try different keyboard layouts after this patch is
applied.

Signed-off-by: Henrik Carlqvist <hc1245@poolhem.se>
Message-Id: <20230623203007.56d3d182.hc981@poolhem.se>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
[MCA edit: update unsigned char to uint8_t, fix spacing issues]
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2023-06-28 10:54:25 +01:00

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.. _keyboard:
Sparc32 keyboard
----------------
SUN Type 4, 5 and 5c keyboards have dip switches to choose the language layout
of the keyboard. Solaris makes an ioctl to query the value of the dipswitches
and uses that value to select keyboard layout. Also the SUN bios like the one
in the file ss5.bin uses this value to support at least some keyboard layouts.
However, the OpenBIOS provided with qemu is hardcoded to always use an
US keyboard layout.
With the escc.chnA-sunkbd-layout driver property it is possible to select
keyboard layout. Example:
-global escc.chnA-sunkbd-layout=de
Depending on type of keyboard, the keyboard can have 6 or 5 dip-switches to
select keyboard layout, giving up to 64 different layouts. Not all
combinations are supported by Solaris and even less by Sun OpenBoot BIOS.
The dip switch settings can be given as hexadecimal number, decimal number
or in some cases as a language string. Examples:
-global escc.chnA-sunkbd-layout=0x2b
-global escc.chnA-sunkbd-layout=43
-global escc.chnA-sunkbd-layout=sv
The above 3 examples all select a swedish keyboard layout. Table 3-15 at
https://docs.oracle.com/cd/E19683-01/806-6642/new-43/index.html explains which
keytable file is used for different dip switch settings. The information
in that table can be summarized in this table:
.. list-table:: Language selection values for escc.chnA-sunkbd-layout
:widths: 10 10 10
:header-rows: 1
* - Hexadecimal value
- Decimal value
- Language code
* - 0x21
- 33
- en-us
* - 0x23
- 35
- fr
* - 0x24
- 36
- da
* - 0x25
- 37
- de
* - 0x26
- 38
- it
* - 0x27
- 39
- nl
* - 0x28
- 40
- no
* - 0x29
- 41
- pt
* - 0x2a
- 42
- es
* - 0x2b
- 43
- sv
* - 0x2c
- 44
- fr-ch
* - 0x2d
- 45
- de-ch
* - 0x2e
- 46
- en-gb
* - 0x2f
- 47
- ko
* - 0x30
- 48
- tw
* - 0x31
- 49
- ja
* - 0x32
- 50
- fr-ca
* - 0x33
- 51
- hu
* - 0x34
- 52
- pl
* - 0x35
- 53
- cz
* - 0x36
- 54
- ru
* - 0x37
- 55
- lv
* - 0x38
- 56
- tr
* - 0x39
- 57
- gr
* - 0x3a
- 58
- ar
* - 0x3b
- 59
- lt
* - 0x3c
- 60
- nl-be
* - 0x3c
- 60
- be
Not all dip switch values have a corresponding language code and both "be" and
"nl-be" correspond to the same dip switch value. By default, if no value is
given to escc.chnA-sunkbd-layout 0x21 (en-us) will be used.