Hi Manimehalai,
I don’t know what do you mean by Legacy Serial IO driver. But the task of
the module should be
1) Capture the Video Screen on Legacy mode
2) Send the Video Screen to redirection screen using serial port.
3) Capture the Input data from Serial port and report it as Keyboard input
data
To send the data to serial port, you will be writing the UEFI driver already.
To communicate to this UEFI driver to send or receive data from USB to Serial
device, from Legacy Environment you need to create your own interface.
Thanks,
Ramesh
From: Manimehalai Selvaraj [mailto:manimehalai.selva...@lntinfotech.com]
Sent: Thursday, July 25, 2013 2:55 PM
To: Ramesh R.; 'edk2-devel@lists.sourceforge.net'
Subject: RE: UEFI driver for USB to Serial Adapter
Hi Ramesh,
Thanks for the information.
I want to confirm, that the requirement requires writing a Legacy Serial I/O
driver in addition to UEFI Serial I/O driver.
Thanks,
Manimehalai S
From: Ramesh R. [mailto:rame...@ami.com]
Sent: 25 July 2013 14:03
To: Manimehalai Selvaraj; 'edk2-devel@lists.sourceforge.net'
Subject: RE: UEFI driver for USB to Serial Adapter
For DOS environment, you need another driver that would take care of the
redirection. Means CSM alone will not help. As Legacy environment doesn’t use
the protocol interface, For writing and reading into serial device you need to
create your own interface for that.
Thanks,
Ramesh
From: Manimehalai Selvaraj [mailto:manimehalai.selva...@lntinfotech.com]
Sent: Thursday, July 25, 2013 11:13 AM
To: 'edk2-devel@lists.sourceforge.net'
Subject: [edk2] UEFI driver for USB to Serial Adapter
Hi,
I am working on developing an UEFI driver for USB to Serial Adapter. Following
are the functionalities required:
1) Attach to an USB to Serial Adapter
2) Support terminal/console redirection, i.e, allow Setup screen to be
redirected and send keyboard activities to setup
3) Support DOS, i.e., redirecting screen from DOS, and pass keys to USB
serial ports.
As per my analysis, the project requires writing an UEFI driver that will
attach to a USB Serial adapter. The driver should produce a SerialIO protocol
to support console redirection via USB Serial port.
But I am unable to proceed with supporting USB Serial ports in DOS environment.
Should it be done by creating a CSM module? Please help me regarding this
activity.
Thanks,
Manimehalai S
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