[microblaze-uclinux] Using MDM UART as only standard input/output!

["Ayre, Aditya" <Aditya.Ayre@xxxxxxx>]

Hello,

It is my first trial with petalinux/uClinux (microblaze).
 
I'm using one ASIC emulation board which has only DDR SDRAM.
The UART is over MDM-JTAG i/f. I'm targetting a MMU-less microblaze.
XPS-Ethernet-Lite is used with on-chip Phy-Loopback (as no outside i/f).

The problem is mainly with getting to run the linux image. 

With little bit of code changes (given below), 
I got the petalinux/uclinux image(s) built;

but, it does not seem to work properly,
I see no messages on HyperTerminal connected to the serial port.

For FS-Boot, HyperTerminal needed to have 1ms delay 
 between two characters sent (via Send File), otherwise
 XMD would crash! Its EDK 10.1.03!!!

Presently am using the MDM download method.

Please let me know any known methods that would help me 
get the uClinux up and working. I've gone through most of
PetaLogix webpages already,


The minor changes/additions made to get rid of image build errors were:
 
1. in "edk_user_repository\PetaLogix\bsp\petalinux_v1_00_b\data\"

Added following code in "petalinux_v2_1_0.tcl" to support MDM UART...

...... "uartlite" { ..... }
  "mdm" { ## aditya: mdm has same driver-base as uartlite
	generate_int_param "UARTLITE" "1" "Stdin/Stdout IP"
  } 
...... default { .... }


2. Did not use "coredump" and related choices in menuconfig, as
Some binutils failed to compile, stating "undefined user-stack".

3. Set "CONSOLE_BAUD_RATE = 9600" in config.arch
   it was 115200 by default.

4. Manually added one line in "include/linux/autoconf.h"
     - otherwise u-boot fail to compile.
   #define CONFIG_XILINX_UARTLITE_0_BAUDRATE 9600



Thank you

Aditya Ayre
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