Re: some question about linux kernel in embed system
Hi, what kind of hardware are you using? Try passing the console device name you want to use on the kernel command line, ie console=consoledev Greets, Florian On Fri, 17 Aug 2007 10:58:01 +0800 李明 [EMAIL PROTECTED] wrote: hello everyone I am doing some embed system works. Now I want to replant the linux-2.4.32 to my own system. But there are some questions.First let me introduce my heardware: I use powerpc+flash+sdram to buildup a mini system,use u-boot 1.1.4 as bootloader then I need to replant the kernel on it . The linux-2.4.32 kernel which was made a uImage, is running in this mini system, the question is appear: Image Name: Linux-2.4.32 Created: 2007-08-16 21:31:03 UTC Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:685809 Bytes = 669.7 kB Load Address: Entry Point: Verifying Checksum ... OK Uncompressing Kernel Image ... OK then the kernel is dead, I do not know what is problem,please give me some clew,thanks! ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Re: GPIO interrupts on mpc8313e
Is the interrupt configured properly for whatever it is you connect to it? (level vs edge triggered, rising vs falling) Best regards, Florian On Wed, 1 Aug 2007 14:45:05 +0300 Yoni Levin [EMAIL PROTECTED] wrote: I want to receive interrupt from 1 GPIO port (for example 14) I changed the GPIMR to 0x (so I need to get interrupts from all GPIO ports) And then request the irq by : irq_create_mapping(NULL,74); request_irq(74,handler,IRQF_DISABLED,GPIO,NULL); the return value is 0 (OK) but I cant receive any interrupt. do I need to do something else? ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Re: creation of jffs2 rootfile system..
Hi Nethra, what does your inittab and your startup files look like? It looks like - your inittab does not start a getty but rather a shell, thus no login - your /proc isn't mounted, and it's needed for ps to work properly Greets, Florian Voegel Carangul.Tech On Thu, 26 Jul 2007 23:41:32 -0700 (PDT) Nethra [EMAIL PROTECTED] wrote: when boot the board with jffs2 rootfile system i m getting output like this, TCP: Hash tables configured (established 4096 bind 8192) IPv4 over IPv4 tunneling driver NET: Registered protocol family 1 NET: Registered protocol family 10 IPv6 over IPv4 tunneling driver NET: Registered protocol family 17 Disabled Privacy Extensions on device c02527a0(lo) IP-Config: Incomplete network configuration information. Empty flash at 0xffa0 ends at 0x0001 Empty flash at 0x0002ffec ends at 0x0003 Empty flash at 0x0004ffe8 ends at 0x0005 Empty flash at 0x0006ffc8 ends at 0x0007 Empty flash at 0x0008fffc ends at 0x0009 Empty flash at 0x000afffc ends at 0x000b Empty flash at 0x000cfffc ends at 0x000d Empty flash at 0x000efffc ends at 0x000f Empty flash at 0x0010fffc ends at 0x0011 Empty flash at 0x0012fffc ends at 0x0013 Empty flash at 0x0014fffc ends at 0x0015 Empty flash at 0x0016fffc ends at 0x0017 Empty flash at 0x0018fffc ends at 0x0019 Empty flash at 0x001cfffc ends at 0x001d Empty flash at 0x001efffc ends at 0x001f Empty flash at 0x0020fffc ends at 0x0021 Empty flash at 0x0022fffc ends at 0x0023 Empty flash at 0x0024fffc ends at 0x0025 Empty flash at 0x0026fffc ends at 0x0027 Empty flash at 0x002afffc ends at 0x002b Empty flash at 0x002cfffc ends at 0x002d VFS: Mounted root (jffs2 filesystem). Freeing unused kernel memory: 108k init Please press Enter to activate this console. / # / # / # login prompt itself is not coming and ps command is not working # ps PID Uid VmSize Stat Command # what is the problem..? waiting for early response, Nethra -- View this message in context: http://www.nabble.com/creation-of-jffs2-rootfile-system..-tf4155759.html#a11823840 Sent from the linuxppc-embedded mailing list archive at Nabble.com. ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Re: SDRAM failures on MPC5200B
Hi, Considering the age of the U-Boot version you're using, it's most likely the problem with the SD-RAM controller of the 5200B. Later U-Boot versions fix this I think by writing a value of 4 to the register at MBAR+0x0190, which does _something_ to resolve the problem. It worked for us. However, we still had problems with SD-RAM in conjunction with other components, so we switched to DDR which has worked flawlessly so far - you might want to consider doing the same. Greets, Florian Voegel Carangul.Tech On Fri, 20 Jul 2007 10:40:30 -0500 lokowich [EMAIL PROTECTED] wrote: We're working on bringing up a MPC5200B version of our original MPC5200 board using U-Boot 1.1.4 configured for Icecube/Lite5200B. Other than the CPU, the board is identical. The bootloader crashes just after relocation to RAM, often with a Program Check Exception, typically a memory corruption issue. I noticed failures at different stages after relocation based on content, suggesting problems with upper SDRAM. If I force the initram to 1/2 the determined size (64MB instead of 128MB), then everything works well through kernel load and initialization. We've added termination resistors to improve AD signals, to no avail. Memory tests work fine too. Any help is appreciated. Thanks, Mark Lokowich Systems Engineer Advanced Communication Design 7901 12th Ave. So. Bloomington, MN 55425 952-854-4000 [EMAIL PROTECTED] This email was Anti Virus checked by Astaro Security Gateway. http://www.astaro.com ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
