Linux support for the PPMC8260
Does anyone have full support for the PPMC8260 reference platform from WindRiver. I have the kernel up and running on the board, but PCI interrupts are not working. I have searched through the list archives and there is mention of the Powerspan, but I have not been able to find any code for it. I am working with a 2.4 kernel, but any help would be appreciated. /Randy ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
search for LCD pannel (1x16 or 2x16)
hi all ! I'm searching for a LCD panel ( about 1x16 or 2x16 characters, black and white only ) that my MPC8260 could use . Could someone here recommend me a good one ? Is there some support for them in the linux kernel (I use linux 2.4.4 from Denx) ? Greetings, Julien . -- Julien Eyries RD engineer Thales Broadcast Multimedia (ex-thomcast) email: julien.eyries at thales-bm.com fax: 33(0) 1 34 90 31 10 tel: 33(0) 1 34 90 31 01 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
IDE disk size
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higher uart baud rate corrupts image..
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initrd, ramdisk problems
I managed to get this working -- what I did differently was: * changed kernel version from 2.4.18 to 2.4.4 (from the ELDK cvs repository) And that was it. It now works. The ramdisk decompresses without errors and the systems boots fine. Happy day. I noticed that the directory layout for the kernel changed somewhat from 2.4.4 to 2.4.18 -- In 2.4.4 I put ramdisk.image.gz in linux/arch/ppc/mbxboot, while in 2.4.18 the ramdisk goes in linux/arch/ppc/boot/images . Plus in 2.4.18 there are a lot of directories in linux/arch/ppc/boot compared to 2.4.4 . As a history lesson, why did this change ? Another question: When booting the two different kernels (2.4.18 and 2.4.4-eldk) I noticed that the initial message about where the images are loaded and relocated reported different addresses and sizes. Is that expected? Cheers, Curt On Sat, Sep 21, 2002 at 08:26:31PM -0700, curt brune wrote: Hi, I'm booting linux 2.4.18 on an embedded planet RPX_LITE-DW (823e) with a RAM disk, however I am getting a crc error while decompressing the RAM disk. Snipped from the boot log are these two lines: RAMDISK: Compressed image found at block 0 crc errorFreeing initrd memory: 1670k freed I built the kernel image using gmake zImage.initrd . This picked up my gzipped ramdisk image OK. [editor: I know, I know. I should be using ppcboot.] The ramdisk is 8192 bytes uncompressed. Compressed it is 1.7MB. The target kernel is configured for 8192 byte ramdisks also. This is stumping me. In the boot log I also noticed something funny. My board only has 16MB total on it and the kernel is configured for 8MB ramdisk. In the boot log it says it is initializing 16 ramdisks of 8MB each Kernel command line: root=/dev/ram ramdisk=8192 Memory: 13104k available (916k kernel code, 348k data, 52k init, 0k highmem) ... RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize Looking in rd.c I see 16 is a #define constant. Is this a problem? Cheers, Curt ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
ppcboot on rpxlite_dw mpc850
Hello lists, Apologies for the crosspost. I believe both lists are concerned. Regarding my problem, i searched the archives and did not find any relevant information. Yet, i am new to this project, so there might be some elementary stuff i am not aware of... I have an RPXlite_dw board from EmbeddedPlanet with the MPC850 chip. I use SourceGate II ver 4 from Avocet Systems for debugging. I am trying to boot ppcboot on it. For ppcboot compilation, i did: $ make RPXlite_config $ make I installed the binary file into flash. Using the debugger, i can see that the first instructions are located at address 0x100, as they should be. When i boot the board, no output is performed on the serial port. The first few instructions appear as follows (as viewed by the debugger) with the corresponding code snippet pasted at the end. 0x100 LIS r3,-0x5E0 0x104 MTSPR IMMR,r3 0x108 LIr21,0x1 0x10C B 0x118 0x110 LIr21,0x2 0x114 B 0x118 0x118 LIr3,0x1002 0x11C MTMSR r3 Using the debugger and doing a step by step execution, it seems that these instructions generate breakpoint exceptions, change the memory map in some way, and jump somewhere in the code. It finally ends by executing the '' instruction (in flash?) which generates a float-instruction exception. I apologize for this somewhat unclear description, but it seems that the execution is different from time to time. Now, here are my interrogations... - Has anyone booted ppcboot with this exact board? - Where does the LI instruction come from? It doesn't appear in the Motorola's 32 bit ppc ref books. Could the problem be at the cross-compiling level? - Here's a notice written by Yoo. Jonghoon in the .../board/RPXlite/flash.c file: /* * Yoo. Jonghoon, IPone, yooth at ipone.co.kr * PPCboot port on RPXlite board * * Some of flash control words are modified. (from 2x16bit device * to 4x8bit device) * RPXLite board I tested has only 4 AM29LV800BB devices. Other devices * are not tested. * * (?) Does an RPXLite board which * does not use AM29LV800 flash memory exist ? * I don't know... */ Can I rightfully conclude that ppcboot has yet to be ported to this precise board? If so, what are the modifications that would be to be done? Any useful links? Best regards, Patrick Mahoney .../cpu/mpc8xx/start.S: .globl _start _start: lis r3, CFG_IMMR at h /* position IMMR */ mtspr 638, r3 li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH */ b boot_cold . = EXC_OFF_SYS_RESET + 0x10 .globl _start_warm _start_warm: li r21, BOOTFLAG_WARM /* Software reboot */ b boot_warm boot_cold: boot_warm: /* Initialize machine status; enable machine check interrupt */ /*--*/ li r3, MSR_KERNEL /* Set ME, RI flags */ mtmsr r3 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
ppcboot on rpxlite_dw mpc850
The RPXlite_config in ppcboot is for the Embedded Planet LITE CW not the DW. The CW is high boot and has DRAM, the DW is low boot and has SDRAM. -Original Message- From: Patrick Mahoney [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 25, 2002 2:49 PM To: ppcboot-users at lists.sourceforge.net; linuxppc-embedded at lists.linuxppc.org Cc: yooth at ipone.co.kr Subject: ppcboot on rpxlite_dw mpc850 Hello lists, Apologies for the crosspost. I believe both lists are concerned. Regarding my problem, i searched the archives and did not find any relevant information. Yet, i am new to this project, so there might be some elementary stuff i am not aware of... I have an RPXlite_dw board from EmbeddedPlanet with the MPC850 chip. I use SourceGate II ver 4 from Avocet Systems for debugging. I am trying to boot ppcboot on it. For ppcboot compilation, i did: $ make RPXlite_config $ make I installed the binary file into flash. Using the debugger, i can see that the first instructions are located at address 0x100, as they should be. When i boot the board, no output is performed on the serial port. The first few instructions appear as follows (as viewed by the debugger) with the corresponding code snippet pasted at the end. 0x100 LIS r3,-0x5E0 0x104 MTSPR IMMR,r3 0x108 LIr21,0x1 0x10C B 0x118 0x110 LIr21,0x2 0x114 B 0x118 0x118 LIr3,0x1002 0x11C MTMSR r3 Using the debugger and doing a step by step execution, it seems that these instructions generate breakpoint exceptions, change the memory map in some way, and jump somewhere in the code. It finally ends by executing the '' instruction (in flash?) which generates a float-instruction exception. I apologize for this somewhat unclear description, but it seems that the execution is different from time to time. Now, here are my interrogations... - Has anyone booted ppcboot with this exact board? - Where does the LI instruction come from? It doesn't appear in the Motorola's 32 bit ppc ref books. Could the problem be at the cross-compiling level? - Here's a notice written by Yoo. Jonghoon in the .../board/RPXlite/flash.c file: /* * Yoo. Jonghoon, IPone, yooth at ipone.co.kr * PPCboot port on RPXlite board * * Some of flash control words are modified. (from 2x16bit device * to 4x8bit device) * RPXLite board I tested has only 4 AM29LV800BB devices. Other devices * are not tested. * * (?) Does an RPXLite board which * does not use AM29LV800 flash memory exist ? * I don't know... */ Can I rightfully conclude that ppcboot has yet to be ported to this precise board? If so, what are the modifications that would be to be done? Any useful links? Best regards, Patrick Mahoney .../cpu/mpc8xx/start.S: .globl _start _start: lis r3, CFG_IMMR at h /* position IMMR */ mtspr 638, r3 li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH */ b boot_cold . = EXC_OFF_SYS_RESET + 0x10 .globl _start_warm _start_warm: li r21, BOOTFLAG_WARM /* Software reboot */ b boot_warm boot_cold: boot_warm: /* Initialize machine status; enable machine check interrupt */ /*--*/ li r3, MSR_KERNEL /* Set ME, RI flags */ mtmsr r3 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Cisco 26xx routers ??
Hi Folks: I was browsing some emails on the list and read an email from Iain Young related with the use of Linuxppc for the Cisco 2600's series routers.. Does anybody has success doing that ?? All comments or suggestions are very welcome... Best Regards, -- Arturo Nunez| Mathematics is the supreme School of Computer Science | nostalgia of our time ... University of Central Florida | (407)-823-3228 (O) | ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
search for LCD pannel (1x16 or 2x16)
In message 3D918070.10009 at thales-bm.com you wrote: I'm searching for a LCD panel ( about 1x16 or 2x16 characters, black and white only ) that my MPC8260 could use . Most display of this sort come with some sort of serial interface. Is there some support for them in the linux kernel (I use linux 2.4.4 from Denx) ? The UART driver is working just fine... Best regards, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de Hi there! This is just a note from me, to you, to tell you, the per- son reading this note, that I can't think up any more famous quotes, jokes, nor bizarre stories, so you may as well go home. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Character LCD
Hello, I had an experience work with : MSC-C162DGLY-1N (character) MG-240128-1 (graphic) but only via parallel port x86 MS-DOS and Linux 2.0.xx. It was easy and stable. About hardware at: http://www.truly.de/datasheet/character.asp Best wishes Sergiy ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
