Hi!
this error comes again. It isn't a compiler error after all. :(
JTAG inspection shows that the problem is located in arch/arm/mach-socfpga/spl.c line94. It seems that re-enable ECC on OCRAM can cause some strange value changes in SRAM. Disabling ECC might also cause value changes, which I didn't test.
On a cold (re)boot sysmgr_regs->eccgrp_ocram is 0x19 (derr|serr|en). So gd keeps intact.
In our VxWorks Image ECC on OCRAM happens to be disabled. After a warm reset sysmgr_regs->eccgrp_ocram is 0x18 (derr|serr). Thus after re-enable ECC, gd->dm_root turns to 0x80 every time.
My solution is keeping SYSMGR_ECC_OCRAM_EN bit untouched. And it works for me.
diff --git a/arch/arm/mach-socfpga/spl.c b/arch/arm/mach-socfpga/spl.c index 775a827..c858406 100644 --- a/arch/arm/mach-socfpga/spl.c +++ b/arch/arm/mach-socfpga/spl.c @@ -90,12 +90,14 @@ void board_init_f(ulong dummy) * and DBE might triggered during power on */ reg = readl(&sysmgr_regs->eccgrp_ocram); - if (reg & SYSMGR_ECC_OCRAM_SERR) - writel(SYSMGR_ECC_OCRAM_SERR | SYSMGR_ECC_OCRAM_EN, - &sysmgr_regs->eccgrp_ocram); - if (reg & SYSMGR_ECC_OCRAM_DERR) - writel(SYSMGR_ECC_OCRAM_DERR | SYSMGR_ECC_OCRAM_EN, - &sysmgr_regs->eccgrp_ocram); + if (reg & SYSMGR_ECC_OCRAM_SERR) { + reg &= ~SYSMGR_ECC_OCRAM_SERR; + writel(reg, &sysmgr_regs->eccgrp_ocram); + } + if (reg & SYSMGR_ECC_OCRAM_DERR) { + reg &= ~SYSMGR_ECC_OCRAM_DERR; + writel(reg, &sysmgr_regs->eccgrp_ocram); + }
memset(__bss_start, 0, __bss_end - __bss_start);
Other solution: 1. Moving OCRAM ECC setting to earlier stage: requires change in generic code. 2. Clear gd afterwards: requires replication of every early stage gd setting.
Best regards,
Jian Luo DC-IA/EAH2
Tel. +49(9352)18-4266
BeQIK On 31.08.2015 15:28, Marek Vasut wrote:
On Monday, August 31, 2015 at 03:00:22 PM, Jian Luo wrote:
Hi,
Hi!
On 28.08.2015 23:48, Marek Vasut wrote:
On Friday, August 28, 2015 at 02:09:15 PM, Jian Luo wrote:
Hi Marek,
Hi,
On 28.08.2015 14:01, Marek Vasut wrote:
On Friday, August 28, 2015 at 01:40:08 PM, Jian Luo wrote:
----snip----
"Security policy". :(
But thunderbird works ? Can't you just copy the SMTP settings from
thunderbird
into gitconfig ? :)
I tried w/o success. Might try again another time.
Try using msmtp and configure your git send-email to send through it (and all your other MUAs too), it's really convenient :)
It works. Thanks. :)
Cool!
btw is this a custom board you're porting here ?
Yes, but this particular error can also be reproduced on Altera SoCDK.
It seems to be a compiler and/or configuration error of gcc 4.8 generated by yocto dizzy.
Let me guess -- gcc 4.8.2 ?
After I switched to gcc 4.9 shiped with Altera Soc EDS 15.0, there is no warm reset error anymore.
Nice, thanks for the update :)
Best regards, Marek Vasut