[ECOS] S3c2410x (ARM920T) HAL port

["Michael Anburaj" <embeddedeng at hotmail dot com>]

Hi,

Thanks everybody for helping me out. My port for the S3c2410x (ARM920T) is 
kind of working. I got Redboot running & I am able to download code linked 
for RAM through gdb. But after I issue the continue command, it gets stuck 
somewhere without a clue. Same is the case even when I set-up a break point 
at main. This is in reference to the hello.c sample ecos application under 
/examples.

I tried building a separate code as follows:

		ldr r0,=0x56000054
		mov r1,#0x0f
		str r1,[r0]

		b .

Where 0x56000054 is the address of GPFDAT SFR & this GPIO port F is 
configured as output in Redboot itself & has LEDs connected to pins from 
GPF:4 through GPF:7. Writing 0x0f to GPFDAT should light all the 4 LEDs.

I compiled & linked in this code for 0x40000. The binary got generated with 
0x14 bytes

0xE59F0008 0xE3A0100F 0xE5801000 0xEAFFFFFE
0x56000054

I loaded this at 0x40000 & issued go command. The LEDs did not turn ON.

Redboot debug window:
----------------------------

+
RedBoot(tm) bootstrap and debug environment [ROMRAM]
Non-certified release, version UNKNOWN - built 20:25:32, Jun 16 2003

Platform: SMDK2410 system (ARM9)
Copyright (C) 2000, 2001, 2002, Red Hat, Inc.

RAM: 0x00000000-0x00fd0000, 0x00027a48-0x00fc4000 available
RedBoot> load -r -m xmodem -b 0x40000
CCCCCCCC Raw file loaded 0x00040000-0x00040013, assumed entry at 0x00040000
xyzModem - CRC mode, 2(SOH)/0(STX)/0(CAN) packets, 10 retries
RedBoot> go 0x40000

Instead of go 0x40000, I tried just the go, still did not work.

So, I guess control never got passed to address 0x40000.
If you have a clue regarding this, please let me know.

I have to get down to more debugging!!


If there is no port available for the S3c2410x (ARM920T) & if Redhat_ecos 
team is interested in it, I am willing contribution this.

Thanks & Cheers,
-Mike

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