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> Date: Fri, 12 Feb 2010 16:54:43 -0700<BR>> From: marcj303@gmail.com<BR>> To: Zheng.Bao@amd.com<BR>> CC: coreboot@coreboot.org<BR>> Subject: Re: [coreboot] Data in memory changes unexpectedly ininitialize_cpus<BR>> <BR>> On Fri, Feb 12, 2010 at 4:48 PM, Marc Jones <marcj303@gmail.com> wrote:<BR>> > On Thu, Feb 11, 2010 at 6:54 PM, Bao, Zheng <Zheng.Bao@amd.com> wrote:<BR>> >> I kept on finding the problem. Now it is narrowed down to the line 108,<BR>> >> src/arch/i386/coreboot_ram.ld. It is very, very, very, very confused.<BR>> >> My CONFIG_RAMBASE should be 0x200000, which is more than 0x100000, but<BR>> >> the location counter "." is CONFIG_STACK_SIZE. Even if I manually set<BR>> >> ". = CONFIG_STACK_SIZE * 2 ;", I can not get the correct size. But if I<BR>> >> set<BR>> >> ". = 0x2000 * 2 ;", or ". = CONFIG_STACK_SIZE << 1", it is right. I<BR>> >> kinda doubt the compiler and linker.<BR>> >><BR>> >> Can you try it on your building machine? Just try the<BR>> >> Serengeti_cheetah_fam10 and don't need the hardware. Just check the<BR>> >> build/coreboot_ram.map to see if the _estack - _stack is multiple of<BR>> >> CONFIG_STACK_SIZE. That problem should happen on all the fam10 board if<BR>> >> it is built on my building machine.<BR>> ><BR>> > Is this due to the hard coded values in lapic_cpu_init. I don't really<BR>> > understand the comment or what it is doing. I would expect the AP<BR>> > stacks to be setup based on estack as well.<BR>> ><BR>> > // for all APs, let use stack after pgtbl, 20480 is the pgtbl size for every cpu<BR>> > stack_end = 0x100000+(20480 + CONFIG_STACK_SIZE)*CONFIG_MAX_CPUS -<BR>> > (CONFIG_STACK_SIZE*index);<BR>> ><BR>> <BR>> This is what I get in my map file. It seems reasonable.<BR>> <BR>> 00230000 A _stack<BR>> 00238000 A _estack<BR>> 00238000 A _heap<BR>> 002f8000 A _eheap<BR>> 002f8000 A _eram_seg<BR>> 01000000 A CONFIG_RAMTOP<BR>> <BR>what is the CONFIG_STACK_SIZE in your map file?<BR>
> <BR>> <BR>> <BR>> -- <BR>> http://se-eng.com<BR>> <BR>> -- <BR>> coreboot mailing list: coreboot@coreboot.org<BR>> http://www.coreboot.org/mailman/listinfo/coreboot<BR><BR> <br /><hr />Hotmail: Powerful Free email with security by Microsoft. <a href='https://signup.live.com/signup.aspx?id=60969' target='_new'>Get it now.</a></body>
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