u-boot 1.1.4 compiled by eldk 4.1 for mpc82xx crashed
Hi,
I encountered a big problem that u-boot 1.1.4 compiled by eldk 4.1 for mpc82xx crashed.
But if I build it using gcc-3.4.6 based cross tools, u-boot on my board boots correctly.
u-boot built by eldk 4.1 (gcc-4.0) failed, nothing occures on serial port.
Somebody sufered the same problem?
Quoted 3 lines · In message <[email protected]> you wrote:
I encountered a big problem that u-boot 1.1.4 compiled by eldk 4.1 for mpc82xx crashed.
U-Boot 1.1.4 is from 2005, i. e. very old compared to gcc 4.x compilers.
You must not expect that your ancient code is still usable with recent tools.
Quoted 1 line
Somebody sufered the same problem?
Update your code. Guess why ELDK 4.1 has U-Boot 1.2.0 included?
Best regards,
Wolfgang Denk
Signature · 5 lines
DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk Office: Kirchenstr. 5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de I don't see any direct evidence ... but, then, my crystal ball is in dire need of an ectoplasmic upgrade. :-) -- Howard Smith
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Quoted 3 lines
Actually I first build u-boot-1.1.4 using eldk 4.0, it also failed booting.<br>
And eldk 4.0 delivered with u-boot 1.1.4<br>
The version of U-Boot that has been shipped with ELDK 4.0 is 1.1.4 indeed, but it has been tested and is working fine on a couple of MPC82xx systems we have here.
Quoted 2 lines
<pre wrap="">I encountered a big problem that u-boot 1.1.4 compiled by eldk 4.1 for
mpc82xx crashed.
So this must be a problem in your own board configuration.
I repeat my recommendation to use current code (top of tree from git repository).
Best regards,
Wolfgang Denk
Signature · 4 lines
DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk Office: Kirchenstr. 5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de Above all else -- sky.
Quoted 5 lines · Miao Qingjun
Hi,
I encountered a big problem that u-boot 1.1.4 compiled by eldk 4.1 for mpc82xx crashed.
Quoted 7 lines
But if I build it using gcc-3.4.6 based cross tools, u-boot on my board boots correctly.
u-boot built by eldk 4.1 (gcc-4.0) failed, nothing occures on serial port.
Somebody sufered the same problem?
This is often a missing "volatile" qualifier on shared variable (particularly hardware registers) references. Newer compiler versions optimize more aggressively, making missing "volatile"s visible.
If you use -O0 (no optimization) does it fix the problem? If it does, it most likely is an optimization/volatile issue. The hard part is to figure out where. Device handling and board-specific code is the place to start.
Best regards,
gvb
Thanks very much.
I tried it using "-O0" and it's OK.
I think u-boot 1.1.4 is not gcc 4.0 friendly. And I will try u-boot 1.2.0 recommended by Wolfgang Denk.
Jerry Van Baren ??:
Quoted 30 lines
Quoted 5 lines · Miao Qingjun
Hi,
I encountered a big problem that u-boot 1.1.4 compiled by eldk 4.1 for mpc82xx crashed.
Quoted 8 lines
But if I build it using gcc-3.4.6 based cross tools, u-boot on my board boots correctly.
u-boot built by eldk 4.1 (gcc-4.0) failed, nothing occures on serial port.
Somebody sufered the same problem?
This is often a missing "volatile" qualifier on shared variable (particularly hardware registers) references. Newer compiler versions optimize more aggressively, making missing "volatile"s visible.
If you use -O0 (no optimization) does it fix the problem? If it does, it most likely is an optimization/volatile issue. The hard part is to figure out where. Device handling and board-specific code is the place to start.
Best regards,
gvb