|To:||David VomLehn <firstname.lastname@example.org>|
|Subject:||Re: Linux port failing on MIPS32 24Kc|
|From:||joe seb <email@example.com>|
|Date:||Thu, 9 Jul 2009 16:35:30 +0530|
|Cc:||Ralf Baechle <firstname.lastname@example.org>, email@example.com|
|Dkim-signature:||v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=Mb65i8yMfG8iQNJ125D/zw8+ELr3faFg+zmCEj9Mss8=; b=qLt7p17LZpTqE0zgy2oz0noHv03TW+/d474aOeipYKaTMwA9o768AvVWhVGLGuPE5E vHwwx811V28bhNNJfog2OJ7eh5LsaLg3EGUpUd3cEU1uj3jP/Pe85HTQqVEh3AvkwwqF NV8gn0hN3/EFYudWC8qPpG09oXPGJ+ADWRR+I=|
|Domainkey-signature:||a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=uAyafFfFwPi2Y4ILFZ+FSTR+XCdEDuzOE5p3X2ThIoV6eLDHEOTLy6pZW2015lA+zH +dn5YqgCSXfbeDIf+tybHhtN910VX4iHgFwVfOgesiJpUDaLJGPoDdgnj4bTliOUjcdx b9E6mFq6cn77GFzLzWrUE7tWk/jfYPdjN5Iqg=|
|References:||<firstname.lastname@example.org> <20090708103756.GB22308@linux-mips.org> <email@example.com> <20090708182906.GB31285@cuplxvomd02.corp.sa.net>|
Hi David, Ralf,
This is a new FPGA based platform which has MIPS 24k core and we are trying to bring up linux on this. MIPS cpu is running at 50MHz.
Other than ram, we have UART available and its a 8250 compatible UART which is connected to one of the HW interrupt line. The MIPS timer interrupt is connected to HW4 interrupt line. So in our platform file, we provide the irq dispatch function for these two irq lines. There is no driver which uses the DMA.
We did another experiment where we replaced init application with a memory test code which malloc and run incremental pattern test on the allocated memory and we see sometimes this test is failing. The failure is happening for a cache line, when we dump ddr corresponding to that cache line, we see that, that particular cache line is not flushed to ddr and all the other cache lines are fine. So, not sure any issue with flushing the write-back. We checked the linux code and did not see any place dcache is flushed for a particular line, its always for a page(blast_dcache functions). Is our finding correct?
On Wed, Jul 8, 2009 at 11:59 PM, David VomLehn <firstname.lastname@example.org> wrote:
|<Prev in Thread]||Current Thread||[Next in Thread>|
|Previous by Date:||Re: [PATCH] Move Cross VPE writes to a latter stage in loop after a TC is assigned to VPE., Ralf Baechle|
|Next by Date:||What's happening with vr41xx_giu.c?, Shinya Kuribayashi|
|Previous by Thread:||Re: Linux port failing on MIPS32 24Kc, David VomLehn|
|Next by Thread:||Re: Linux port failing on MIPS32 24Kc, Eugene Surovegin|
|Indexes:||[Date] [Thread] [Top] [All Lists]|