Re: Reboot Command Makes kernel to hang (MPC8560)
Hi Koller Kumar Thanks for ur reply. Is there a way to reset the full chip (MPC8560) whenever core reset occurs (using hardware or software) ?? Regards Haroun Ansari M A - Original Message - From: Kumar Gala [EMAIL PROTECTED] To: Clemens Koller [EMAIL PROTECTED] Cc: Ansari [EMAIL PROTECTED]; linuxppc-embedded@ozlabs.org Sent: Tuesday, July 31, 2007 7:41 PM Subject: Re: Reboot Command Makes kernel to hang (MPC8560) On Jul 31, 2007, at 6:44 AM, Clemens Koller wrote: Hi, Ansari! Ansari schrieb: Hi Kumar, First of all thanks for ur reply . Even i went through the linux source . And i have observe that the reboot command used to hard reset the core . I have few doubts can u please clarify me. 1. Is there any way to reset the full chip with out using any external signal (MPC8560) ? (like any register that can be used for reseting the processor) I RTFM: It should be the bits RST[1:0] in the Debug Control Register 0 (DBCR0). This only resets the core on the 8560. I didn't find details how the external signals are affected: HRESET_REQ# and friends. The HRESET_REQ# is usually fed back to the CPU's HRESET#. So if the HRESET_REQ# gets asserted by writing to above registers it should really bring down the CPU, it's internal as well as it's external components, which are usually connected to a replication of that signal. This is roughly correct. The only way on 8560 to generate HRESET_REQ# is to cause a core watchdog timeout. However the existence of cpm2_reset() and a qe_reset() (QuiccEngine?) in the code tells me that the above expectations could be wrong. Would be nice to have that verified by some hardware guys from freescale... cpm2_reset/qe_reset are more related to SW than any HW reset. 2. Even same reboot command works fine for MPC8540 Processor ?. ...because it doesn't have a cpm ? That's more luck than anything else. 3. what are the factors that makes ramdisk hangs . When its uncompressing ? Well, side effects ? Regards, -- Clemens Koller __ RD Imaging Devices Anagramm GmbH Rupert-Mayer-Straße 45/1 Linhof Werksgelände D-81379 München Tel.089-741518-50 Fax 089-741518-19 http://www.anagramm-technology.com ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Re: Reboot Command Makes kernel to hang (MPC8560)
Hi Kumar, First of all thanks for ur reply . Even i went through the linux source . And i have observe that the reboot command used to hard reset the core . I have few doubts can u please clarify me. 1. Is there any way to reset the full chip with out using any external signal (MPC8560) ? (like any register that can be used for reseting the processor) 2. Even same reboot command works fine for MPC8540 Processor ?. 3. what are the factors that makes ramdisk hangs . When its uncompressing ? Regards Haroun Ansari - Original Message - From: Kumar Gala [EMAIL PROTECTED] To: Ansari [EMAIL PROTECTED] Cc: linuxppc-embedded@ozlabs.org Sent: Friday, July 27, 2007 1:21 AM Subject: Re: Reboot Command Makes kernel to hang (MPC8560) On Jul 26, 2007, at 1:55 AM, Ansari wrote: Hi all, Processor (MPC8560) Whenever reboot command is given in the linux console. The processor gets reset and it loads bootloader , kernel and when uncompressing the ramdisk it gets hang. The sample log is given below. Any u please tell me what are the factors that can makes this to happen. This is very board dependant. The MPC8560 doesn't have a clean way to request reset, and odds are you're only getting the core reset and not the full chip. - k ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Reboot Command Makes kernel to hang (MPC8560)
... Image Name: 070500 Linux-cscpp Created: 2007-05-30 14:49:24 UTC Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:938254 Bytes = 916.3 kB Load Address: Entry Point: Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Loading RAMDisk Image at ff00 ... Image Name: 070500 cscpp-REL_7_5 Created: 2007-05-30 14:51:09 UTC Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size:3543240 Bytes = 3.4 MB Load Address: Entry Point: Verifying Checksum ... OK Loading Ramdisk to 0fc4e000, end 0ffaf0c8 ... OK Memory CAM mapping: CAM0=256Mb, CAM1=0Mb, CAM2=0Mb residual: 0Mb Linux version 2.4.20_mvlcge31-cscpp-7.5 ([EMAIL PROTECTED]) (gcc version 3.3.1 (MontaVista 3.3.1-3.0.10.0300532 2003-12-24)) #1 Wed May 30 20:14:43 IST 2007 max_pfn = 8192 On node 0 totalpages: 65536 zone(0): 65536 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/ram rw console=ttyS0,115200 ip=off OpenPIC Version 1.2 (1 CPUs and 44 IRQ sources) at fdf8 time_init: decrementer frequency = 41.25 MHz hr_time_init: arch_to_nsec = 50840048, nsec_to_arch = 177167400 Calibrating delay loop... 658.63 BogoMIPS Memory: 253056k available (1696k kernel code, 760k data, 68k init, 0k highmem) RMON - kernel resource monitoring Dentry cache hash table entries: 32768 (order: 6, 262144 bytes) Inode cache hash table entries: 16384 (order: 5, 131072 bytes) Mount-cache hash table entries: 4096 (order: 3, 32768 bytes) Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes) Page-cache hash table entries: 65536 (order: 6, 262144 bytes) POSIX conformance testing by UNIFIX Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket LSP Revision 14 ikconfig 0.5 with /proc/ikconfig Starting kswapd Journalled Block Device driver loaded JFFS version 1.0, (C) 1999, 2000 Axis Communications AB JFFS2 version 2.1. (C) 2001, 2002 Red Hat, Inc., designed by Axis Communications AB. CPM UART driver version 0.01 ttyS0 on SCC1 at 0x8000, BRG1 pty: 256 Unix98 ptys configured eth0: FCC ENET Version 0.3, 02:e0:0c:80:31:03 eth0: RMON initialized RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize loop: loaded (max 8 devices) eth1: Gianfar Ethernet Controller Version 1.0, 02:e0:0c:00:31:03 eth1: Running with NAPI disabled eth1: 64/64 RX/TX BD ring size eth1: RMON initialized eth2: Gianfar Ethernet Controller Version 1.0, 02:e0:0c:00:31:02 eth2: Running with NAPI disabled eth2: 64/64 RX/TX BD ring size eth2: RMON initialized network device driver for LKCD registered Crash dump driver initialized. CSC flash: Found 1 x16 devices at 0x0 in 16-bit bank Intel/Sharp Extended Query Table at 0x0031 Using buffer write method cfi_cmdset_0001: Erase suspend on write enabled Creating 7 MTD partitions on CSC flash: 0x00f8-0x0100 : uboot 0x00d0-0x00e0 : kernel0 0x00e0-0x00f0 : kernel1 0x0070-0x00d0 : app 0x-0x0038 : root0 0x0038-0x0070 : root1 0x00f0-0x00f8 : env Creating 2 MTD partitions on CSC NVRAM: 0x-0x0001 : applog 0x0001-0x0002 : kernellog NAND device: Manufacturer ID: 0x2c, Chip ID: 0xca (Unknown NAND 256MiB 3,3V 16-bit) Scanning device for bad blocks Bad eraseblock 1780 at 0x0de8 Creating 1 MTD partitions on NAND 256MiB 3,3V 16-bit: 0x-0x1000 : NAND Partition NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 2048 buckets, 16Kbytes TCP: Hash tables configured (established 16384 bind 32768) ip_conntrack version 2.1 (2048 buckets, 16384 max) - 296 bytes per conntrack ip_tables: (C) 2000-2002 Netfilter core team NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. Event Broker Driver (C) 2001,2002 MontaVista Software ([EMAIL PROTECTED]) Done starting sysfs RAMDISK: Compressed image found at block 0 Hangs Here Thanks in advance Haroun Ansari M A ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
MPC8540 DMA transfer
Hello Koller, Is there any support for dma transter in linux 2.4.x kernel . Whether u have any source code for tht ?. I think u have attached a dma driver code for 2.6.x kernel . But i need it for 2.4 kernel. ( Processor : MPC8540 / MPC8560 ) Regards Ansari ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
