Console drivers are categorised as either input and output sources. The sources for the console can be found using the console command.
Example 5.1. Using the console command to show available drivers
This shows the available drivers and if they can be used for read, write or both.
>console -d (-w-a) s3c2410x-video (r---) usbkbd (rw--) multi (rw--) null (-w--) all-wr (r---) all-rd (rw--) serial (rw--) (s3c2410_serial0) (rw--) (s3c2410_serial1) (rw--) (s3c2410_serial2) (rw--) (u16550_serial0) (rw--) (u16550_serial1) >
These drivers allow access to the peripherals on a system. They can be used to provide input from a user to ABLE and output from ABLE to the user. Any number of them may be used simultaneously, it is possible (though not practical) to have ABLE appear on every serial port and video console attached to a system.
Table 5.1. Available console drivers
|s3c2410x-video||Video display driver for the s3c2410 internal controller.|
|sm501-video||Video display driver for the Silicon motion 501 controller.|
|usbkbd||Reads input from any HID USB keyboard attached to the system.|
|ps2kbd||Reads input from any PS2 keyboard attached to the system|
|null||The null driver is a special driver which swallows all output sent to it and never produces any output.|
|multi||The multi driver is a pseudo driver which allows for multiple console sources, it should never be directly used.|
|all-wr||The “all write” driver is the default
output driver if no other is specified. This driver sets
the output to be all the available output devices.
However it only selects the basic
|all-rd||The “all read” driver is the read
equivalent to the |
|serial||This driver is a read/write capable driver which is connected to what is historically considered the “console” serial port. This is typically the first serial port. On the EB2410ITX, for instance, it is the first internal port of the s3c2410, on the EB110ATX it is the footbridge debug port and on the EB675001DIP it is the main 16550 based port. The port will have the settings of 115200 baud, eight data bits, no parity and a single stop bit.|
|(s3c2410_serial||The serial ports on the s3c2410 are presented as a series of three devices. These devices may have their settings (baud rate, parity etc.) altered as required at initialisation time or later with the setopt command.|
|(u16550_serial||A given system may have several standard 16550
based serial ports each will have an entry. As with all
serial devices (except the |