Sorry, I forgot to mention that I'm using at91rm9200 CPU (ARM9 from Atmel) and u-boot version is 1.2.0 official release. May be there are some known issues with standalone application for ARM? Stack getting corrupted?
My code is but small variation of standard hello_world (attached) and here is output:
U-Boot$ tftp 21000000 $image_path/hello_world.bin; go 21000000; TFTP from server 192.168.0.108; our IP address is 192.168.0.205 Filename 'leonid/ref/images/hello_world.bin'. Load address: 0x21000000 Loading: # done Bytes transferred = 620 (26c hex) ## Starting application at 0x21000000 ... Example expects ABI version 3 Actual U-Boot ABI version 3 Hello World argc = 1 argv[0] = "21000000" argv[1] = "<NULL>" main:48 line=help len=553648684 Hit any key to exit ...
## Application terminated, rc = 0x0 U-Boot$
Application is compiled to run from the address 0x21000000 which is the middle of RAM.
Thanks,
Leonid.
-----Original Message----- From: u-boot-users-bounces@lists.sourceforge.net [mailto:u-boot-users-bounces@lists.sourceforge.net] On Behalf Of Leonid Sent: Sunday, October 28, 2007 11:01 PM To: u-boot-users@lists.sourceforge.net Subject: [U-Boot-Users] Return values from u-boot to standalone application.
Hi:
I have created u-boot standalone application and exported some string functions (like strlen()). The application is working (doesn't fail) but values which exported functions are returning don't look right. For example, this printf() in standalone application
printf ("cmdparse:%u line=%s len=%d\n", __LINE__, line, strlen(line));
prints the following line:
cmdparse:407 line=help len=553684153
meaning strlen() return code is wrong. Same thing happens with strchr() and other functions I have exported.
Am I doing something wrong? How can I get correct return values from u-boot to standalone application?
Thanks,
Leonid.
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