* HELP:PowerPc-Linux kernel @ 2011-07-27 15:03 naresh.kamboju 2011-07-27 20:27 ` Scott Wood 2011-07-28 4:45 ` Vijay Nikam 0 siblings, 2 replies; 11+ messages in thread From: naresh.kamboju @ 2011-07-27 15:03 UTC (permalink / raw) To: linuxppc-dev; +Cc: cort, linas, hollis [-- Attachment #1: Type: text/plain, Size: 1080 bytes --] Hi, I have take up the new assignment Board bring up activity with Linux kernel on PowerPC MPC8272. I have been searching Linux bring up on PowerPC processor in Google and IBM wiki and not found good stuff. It would be more helpful for me if you could share related documents. Best regards Naresh Kamboju Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com [-- Attachment #2: Type: text/html, Size: 5835 bytes --] ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: HELP:PowerPc-Linux kernel 2011-07-27 15:03 HELP:PowerPc-Linux kernel naresh.kamboju @ 2011-07-27 20:27 ` Scott Wood 2011-07-28 4:45 ` Vijay Nikam 1 sibling, 0 replies; 11+ messages in thread From: Scott Wood @ 2011-07-27 20:27 UTC (permalink / raw) To: naresh.kamboju; +Cc: linuxppc-dev On Wed, 27 Jul 2011 20:33:54 +0530 <naresh.kamboju@wipro.com> wrote: > Hi, > > > > I have take up the new assignment Board bring up activity with Linux > kernel on PowerPC MPC8272. > > I have been searching Linux bring up on PowerPC processor in Google and > IBM wiki and not found good stuff. > > It would be more helpful for me if you could share related documents. Look at the support in current kernels for 82xx-based boards such as mpc8272ads. Read the documentation on device trees (Documentation/devicetree, devicetree.org, ePAPR). -Scott ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: HELP:PowerPc-Linux kernel 2011-07-27 15:03 HELP:PowerPc-Linux kernel naresh.kamboju 2011-07-27 20:27 ` Scott Wood @ 2011-07-28 4:45 ` Vijay Nikam 2011-07-28 5:30 ` MJ embd 2011-07-30 12:21 ` naresh.kamboju 1 sibling, 2 replies; 11+ messages in thread From: Vijay Nikam @ 2011-07-28 4:45 UTC (permalink / raw) To: naresh.kamboju; +Cc: linas, cort, linuxppc-dev, hollis Hello, Start with looking at the configuration of the board done which is similar to yours or based on the same CPU as yours. It is important to know role of device tree so read the documentation and understand the syntax and concept of device tree. Once the complete concept is understood then you should start the configuration and achieve successful creation of kernel image. Take a step forward and do some hands on. If any problem occurs then post for specific help, as porting itself is a big task and dosent have really straight forward ste= ps. Good Luck Kind Regards, Vijay Nikam On Wed, Jul 27, 2011 at 8:33 PM, <naresh.kamboju@wipro.com> wrote: > > Hi, > > > > I have take up the new assignment =A0Board bring up activity with Linux k= ernel on PowerPC MPC8272. > > I have been searching Linux bring up on PowerPC processor in Google and I= BM wiki and not found good stuff. > > It would be more helpful for me if you could share related documents. > > > > Best regards > > Naresh Kamboju > > > > Please do not print this email unless it is absolutely necessary. > > The information contained in this electronic message and any attachments = to this message are intended for the exclusive use of the addressee(s) and = may contain proprietary, confidential or privileged information. If you are= not the intended recipient, you should not disseminate, distribute or copy= this e-mail. Please notify the sender immediately and destroy all copies o= f this message and any attachments. > > WARNING: Computer viruses can be transmitted via email. The recipient sho= uld check this email and any attachments for the presence of viruses. The c= ompany accepts no liability for any damage caused by any virus transmitted = by this email. > > www.wipro.com > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: HELP:PowerPc-Linux kernel 2011-07-28 4:45 ` Vijay Nikam @ 2011-07-28 5:30 ` MJ embd 2011-07-28 6:27 ` Vijay Nikam 2011-07-30 12:21 ` naresh.kamboju 1 sibling, 1 reply; 11+ messages in thread From: MJ embd @ 2011-07-28 5:30 UTC (permalink / raw) To: Vijay Nikam; +Cc: naresh.kamboju, linuxppc-dev, cort, linas, hollis Have you every worked on device trees before? On 7/28/11, Vijay Nikam <vijay.t.nikam@gmail.com> wrote: > Hello, > > Start with looking at the configuration of the board done which is > similar to yours > or based on the same CPU as yours. It is important to know role of > device tree so > read the documentation and understand the syntax and concept of device > tree. Once > the complete concept is understood then you should start the > configuration and achieve > successful creation of kernel image. > > Take a step forward and do some hands on. If any problem occurs then > post for specific help, > as porting itself is a big task and dosent have really straight forward > steps. > Good Luck > > Kind Regards, > Vijay Nikam > > On Wed, Jul 27, 2011 at 8:33 PM, <naresh.kamboju@wipro.com> wrote: >> >> Hi, >> >> >> >> I have take up the new assignment =A0Board bring up activity with Linux >> kernel on PowerPC MPC8272. >> >> I have been searching Linux bring up on PowerPC processor in Google and >> IBM wiki and not found good stuff. >> >> It would be more helpful for me if you could share related documents. >> >> >> >> Best regards >> >> Naresh Kamboju >> >> >> >> Please do not print this email unless it is absolutely necessary. >> >> The information contained in this electronic message and any attachments >> to this message are intended for the exclusive use of the addressee(s) a= nd >> may contain proprietary, confidential or privileged information. If you >> are not the intended recipient, you should not disseminate, distribute o= r >> copy this e-mail. Please notify the sender immediately and destroy all >> copies of this message and any attachments. >> >> WARNING: Computer viruses can be transmitted via email. The recipient >> should check this email and any attachments for the presence of viruses. >> The company accepts no liability for any damage caused by any virus >> transmitted by this email. >> >> www.wipro.com >> >> _______________________________________________ >> Linuxppc-dev mailing list >> Linuxppc-dev@lists.ozlabs.org >> https://lists.ozlabs.org/listinfo/linuxppc-dev > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev > --=20 -mj ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: HELP:PowerPc-Linux kernel 2011-07-28 5:30 ` MJ embd @ 2011-07-28 6:27 ` Vijay Nikam 0 siblings, 0 replies; 11+ messages in thread From: Vijay Nikam @ 2011-07-28 6:27 UTC (permalink / raw) To: MJ embd; +Cc: naresh.kamboju, linuxppc-dev, cort, linas, hollis Yes /Vijay Nikam On Thu, Jul 28, 2011 at 11:00 AM, MJ embd <mj.embd@gmail.com> wrote: > Have you every worked on device trees before? > > On 7/28/11, Vijay Nikam <vijay.t.nikam@gmail.com> wrote: >> Hello, >> >> Start with looking at the configuration of the board done which is >> similar to yours >> or based on the same CPU as yours. It is important to know role of >> device tree so >> read the documentation and understand the syntax and concept of device >> tree. Once >> the complete concept is understood then you should start the >> configuration and achieve >> successful creation of kernel image. >> >> Take a step forward and do some hands on. If any problem occurs then >> post for specific help, >> as porting itself is a big task and dosent have really straight forward >> steps. >> Good Luck >> >> Kind Regards, >> Vijay Nikam >> >> On Wed, Jul 27, 2011 at 8:33 PM, <naresh.kamboju@wipro.com> wrote: >>> >>> Hi, >>> >>> >>> >>> I have take up the new assignment =A0Board bring up activity with Linux >>> kernel on PowerPC MPC8272. >>> >>> I have been searching Linux bring up on PowerPC processor in Google and >>> IBM wiki and not found good stuff. >>> >>> It would be more helpful for me if you could share related documents. >>> >>> >>> >>> Best regards >>> >>> Naresh Kamboju >>> >>> >>> >>> Please do not print this email unless it is absolutely necessary. >>> >>> The information contained in this electronic message and any attachment= s >>> to this message are intended for the exclusive use of the addressee(s) = and >>> may contain proprietary, confidential or privileged information. If you >>> are not the intended recipient, you should not disseminate, distribute = or >>> copy this e-mail. Please notify the sender immediately and destroy all >>> copies of this message and any attachments. >>> >>> WARNING: Computer viruses can be transmitted via email. The recipient >>> should check this email and any attachments for the presence of viruses= . >>> The company accepts no liability for any damage caused by any virus >>> transmitted by this email. >>> >>> www.wipro.com >>> >>> _______________________________________________ >>> Linuxppc-dev mailing list >>> Linuxppc-dev@lists.ozlabs.org >>> https://lists.ozlabs.org/listinfo/linuxppc-dev >> _______________________________________________ >> Linuxppc-dev mailing list >> Linuxppc-dev@lists.ozlabs.org >> https://lists.ozlabs.org/listinfo/linuxppc-dev >> > > > -- > -mj > ^ permalink raw reply [flat|nested] 11+ messages in thread
* RE: HELP:PowerPc-Linux kernel 2011-07-28 4:45 ` Vijay Nikam 2011-07-28 5:30 ` MJ embd @ 2011-07-30 12:21 ` naresh.kamboju 2011-07-30 12:28 ` Gary Thomas 1 sibling, 1 reply; 11+ messages in thread From: naresh.kamboju @ 2011-07-30 12:21 UTC (permalink / raw) To: linuxppc-dev; +Cc: scottwood, vijay.t.nikam, cort Hi All, I have started working on powerpc board bring up. I have prepared dtb file a= nd booted linux kernel with my debug statement. Problem: I could not see anything on the serial console. By using the emulator I can= read __log_buf and found below info. How can I initialize the serial console? Here "ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq =3D 40) is a CPM UART" is= detected by kernel and where we generally pass boot args as ttyS0. May I the relation between ttyCPM0 and ttyS0. How can I see kernel boot console on the serial port? It would be helpful if= you share any workarounds. Below print out is from emulator by reading __log_buf and parsed as readable= log. <6>Using MPC82xx ADS machine description .<3>Initializing container subsys cpu. <5>Linux version 2.6.21.7-hrt1-cfs-v22-grsec-WR2.0bl_cgl (vanga@linux) (gcc= version 4.1.2 (Wind River Linux Sourcery G++ 4.1-91)) #18 Sat Jul 30 14:39:= 06 IST 2011 .<7>Entering add_active_range(0, 0, 16384) 0 entries of 256 used .<6>No memory reg property [1] in devicetree .<7>Top of RAM: 0x4000000, Total RAM: 0x4000000 .<7>Memory hole size: 0MB .<4>Zone PFN ranges: .<4> DMA 0 -> 16384 .<4> Normal 16384 -> 16384 .< 4>early_node_map[1] active PFN ranges .<4> 0: 0 -> 16384 .<7>On node 0 totalpages: 16384 .<7> DMA zone: 128 pages used for memmap .<7> DMA zone: 0 pages reserved .<7> DMA zone: 16256 pages, LIFO batch:3 .<7> Normal zone: 0 pages used for memmap. <4>Built 1 zonelists. Total p= ages: 16256. <5>Kernel command line: mem=3D64M console=3DttyS0,9600n8 root=3D/dev/nfs rw= nfsroot=3D172.16.50.152:/home/export,nolock,rsize=3D1024,wsize=3D1024. <5>---after parse_early_param------- . <5>---after parse_args------- . <5>entered sort_main_extable <5>exit sort_main_extable <5>---after sort_main_extable()------- . <5>---after trap_init()------- . <5>---after rcu_init()------- .<6>No pci node on device tree. <5>---after init_IRQ()------- .<4>PID hash table entries: 256 (order: 8, 1024 bytes). <5>---after pidhash_init------- . <5>---after init_timers------- . <5>---after hrtimers_init------- . <5>---after softirq_init------- . <5>---after timekeeping_init------- .<7>time_init: decrementer frequency =3D 16.675000 MHz .<7>time_init: processor fre quency =3D 166.750000 MHz. <5>---after time_init------- . <5>---after profile_init------- . <5>---after early_boot_irqs_on------- . <5>---after local_irq_enable------- .<6>---entered in cpm_uart_console_init -- . <5>---after console_init------- . <5>---after pan ic check------- . <5>---after lockdep_info------- . <5>---after locking_selftest------- .<4>Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) .<4>Inode-cache hash table entries: 4096 (order: 2, 16384 bytes). <5>---after vfs_caches_init_early------- . <5>---cpuset_init_early------- .<6>Memory: 61612k/65536k available (2848k kernel code, 3860k reserved, 84k= data, 276k bss, 152k init). <5>---after kmem_cache_init------- . <5>---after locking_selftest------- . <5>---after radix_tree_init------- . <5>---after memleak_init------- . <5>---after setup_per_cpu_pageset------- . <5>---after numa_policy_init------- . <5>---after late_time_init------ .<7>Calibrating delay loop... 33.28 BogoMIPS (lpj=3D66560). <5>---after calibrate_delay------- . <5>---after pidmap_init------ - . <5>---after pgtable_cache_init------- . <5>---after prio_tree_init------- . <5>---after anon_vma_init------- . <5>---after fork_init------- . <5>---after proc_caches_init------- . <5>---after buffer_init------- . <5>---after unnamed_dev_init------- . <5>---aft er key_init------- . <5>---after security_init------- .<4>Mount-cache hash table entries: 512. <5>---after vfs_caches_init------- . <5>---after signals_init------- . <5>---after page_writeback_init------- .<3>Initializing container subsys cpuacct .<3>Initializi ng container subsys debug. <5>---after container_init------- . <5>---after cpuset_init------- . <5>---after taskstats_init_early------ . <5>---after delayacct_init------- . <5>---after check_bugs------- . <5>---after acpi_early_init------- .<6>-------entry rest_ init-------- .<6>-------kernel_thread -------- .<6>----------after numa_default_policy--------- .<6>-----unlock_kernel-------- .<6>------------init_idle_bootup_task--------- .<6>--------preempt_enable_no_resched------ .<6>NET: Registered protocol family 16 .<6>PC I: Probing PCI hardware .<6>Generic PHY: Registered new driver .<6>NET: Registered protocol family 2 .<6>------------after schedule--------- .<6>----------preempt_disable-------. <5>-----entered cpu_idle ------- <5>-----entered cpu_idle set_thread_flag -------I P route cache hash tabl= e entries: 1024 (order: 0, 4096 bytes) .<4>TCP established hash table entries: 2048 (order: 2, 16384 bytes) .<4>TCP bind hash table entries: 2048 (order: 1, 8192 bytes) .<6>TCP: Hash tables configured (established 2048 bind 2048) .<6>TCP reno registered .<6>JFS: nTxBlock =3D 481, nTxLock =3D 3854 .<6>Time: timebase clocksource has been installed. .<6>Switched to high resolution mode on CPU 0 .<6>Registering unionfs 2.1.6 (for 2.6.21.7) .<6>io scheduler noop registered .<6>Generic RTC Driver v1.07 .< 3>i8042.c: No controller found. .<6>Serial: CPM driver $Revision: 0.02 $ .<6>--cpm_uart_init()---dev =3D C07E6C08 .<6>--uart_register_driver() ---ret =3D 0-- .<6>cpm_uart_drv_probe: Adding CPM UART 0 .<6>CPM uart[0]:config_port .<6>:CPM uart[0]:request port .<6>pinfo->sccp->scc_sccm .<6>CPM uart[0]:allocbuf .<6>CPM uart[0]:init_scc .<6>ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq =3D 40) is a CPM UART .<4>RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize .<4>Default I/O scheduler not found, using no- op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<4>Default I/O scheduler not found, using no-op .<6>nbd: registered device at major 43 .<6>Broa dcom BCM5411: Registered new driver .<6>Broadcom BCM5421: Registered new driver .<6>Broadcom BCM5461: Registered new driver .<6>fs_enet.c:v1.0 (Aug 8, 2005) .<3>BB MII Bus: Cannot register as MDIO bus .<4>fsl-bb-mdio: probe of fsl-bb-mdio.0 failed with error -1 .<3>BB MII Bus: Cannot register as MDIO bus .<4>fsl-bb-mdio: probe of fsl-bb-mdio.1 failed with error -1 .<6>No memory reg property [1] in devicetree .<6>No memory reg property [1] in devicetree .<6>i2c /dev entries driver. <5>physmap platform flash device: 020 00000 at fe000000 .<6>physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. <5>Support for command set 0002 not present .<4>gen_probe: No supported Vendor Command Set found .<3>physmap-flash physmap-flash.0: map_probe failed .<6>TCP cubic registered .<6>Initializing XFRM netlink socket .<6>NET: Registered protocol family 1 .<6>NET: Registered protocol family 17 .<6>NET: Registered protocol family 15 .<6>802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com> .<6>All bugs added by David S. Miller <davem@red hat.com>. <5>Looking up port of RPC 100003/2 on 172.16.50.152.... Best regards Naresh Kamboju -----Original Message----- From: Vijay Nikam [mailto:vijay.t.nikam@gmail.com] Sent: Thursday, July 28, 2011 10:16 AM To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) Cc: linuxppc-dev@lists.ozlabs.org; cort@fsmlabs.com; linas@austin.ibm.com; h= ollis@austin.ibm.com Subject: Re: HELP:PowerPc-Linux kernel Hello, Start with looking at the configuration of the board done which is similar to yours or based on the same CPU as yours. It is important to know role of device tree so read the documentation and understand the syntax and concept of device tree. Once the complete concept is understood then you should start the configuration and achieve successful creation of kernel image. Take a step forward and do some hands on. If any problem occurs then post for specific help, as porting itself is a big task and dosent have really straight forward step= s. Good Luck Kind Regards, Vijay Nikam On Wed, Jul 27, 2011 at 8:33 PM, <naresh.kamboju@wipro.com> wrote: > > Hi, > > > > I have take up the new assignment =A0Board bring up activity with Linux ke= rnel on PowerPC MPC8272. > > I have been searching Linux bring up on PowerPC processor in Google and IB= M wiki and not found good stuff. > > It would be more helpful for me if you could share related documents. > > > > Best regards > > Naresh Kamboju > > > > Please do not print this email unless it is absolutely necessary. > > The information contained in this electronic message and any attachments t= o this message are intended for the exclusive use of the addressee(s) and ma= y contain proprietary, confidential or privileged information. If you are no= t the intended recipient, you should not disseminate, distribute or copy thi= s e-mail. Please notify the sender immediately and destroy all copies of thi= s message and any attachments. > > WARNING: Computer viruses can be transmitted via email. The recipient shou= ld check this email and any attachments for the presence of viruses. The com= pany accepts no liability for any damage caused by any virus transmitted by= this email. > > www.wipro.com > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev Please do not print this email unless it is absolutely necessary. =0A= =0A= The information contained in this electronic message and any attachments to= this message are intended for the exclusive use of the addressee(s) and may= contain proprietary, confidential or privileged information. If you are not= the intended recipient, you should not disseminate, distribute or copy this= e-mail. Please notify the sender immediately and destroy all copies of this= message and any attachments. =0A= =0A= WARNING: Computer viruses can be transmitted via email. The recipient should= check this email and any attachments for the presence of viruses. The compa= ny accepts no liability for any damage caused by any virus transmitted by th= is email. =0A= =0A= www.wipro.com ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: HELP:PowerPc-Linux kernel 2011-07-30 12:21 ` naresh.kamboju @ 2011-07-30 12:28 ` Gary Thomas 2011-08-01 11:31 ` naresh.kamboju 0 siblings, 1 reply; 11+ messages in thread From: Gary Thomas @ 2011-07-30 12:28 UTC (permalink / raw) To: naresh.kamboju; +Cc: scottwood, vijay.t.nikam, cort, linuxppc-dev On 2011-07-30 06:21, naresh.kamboju@wipro.com wrote: > Hi All, > > I have started working on powerpc board bring up. I have prepared dtb file and booted linux kernel with my debug statement. > Problem: > I could not see anything on the serial console. By using the emulator I can read __log_buf and found below info. > > How can I initialize the serial console? > Here "ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq = 40) is a CPM UART" is detected by kernel and where we generally pass boot args as ttyS0. > May I the relation between ttyCPM0 and ttyS0. > How can I see kernel boot console on the serial port? It would be helpful if you share any workarounds. Did you try passing 'console=ttyCPM0' to the bootargs? Also, 2.6.21 is truly ancient. Why not try a more recent kernel, especially if you are just getting srarted? > > Below print out is from emulator by reading __log_buf and parsed as readable log. > > <6>Using MPC82xx ADS machine description > .<3>Initializing container subsys cpu. > <5>Linux version 2.6.21.7-hrt1-cfs-v22-grsec-WR2.0bl_cgl (vanga@linux) (gcc version 4.1.2 (Wind River Linux Sourcery G++ 4.1-91)) #18 Sat Jul 30 14:39:06 IST 2011 > .<7>Entering add_active_range(0, 0, 16384) 0 entries of 256 used > .<6>No memory reg property [1] in devicetree > .<7>Top of RAM: 0x4000000, Total RAM: 0x4000000 > .<7>Memory hole size: 0MB > .<4>Zone PFN ranges: > .<4> DMA 0 -> 16384 > .<4> Normal 16384 -> 16384 > .< 4>early_node_map[1] active PFN ranges > .<4> 0: 0 -> 16384 > .<7>On node 0 totalpages: 16384 > .<7> DMA zone: 128 pages used for memmap > .<7> DMA zone: 0 pages reserved > .<7> DMA zone: 16256 pages, LIFO batch:3 > .<7> Normal zone: 0 pages used for memmap.<4>Built 1 zonelists. Total pages: 16256. > <5>Kernel command line: mem=64M console=ttyS0,9600n8 root=/dev/nfs rw nfsroot=172.16.50.152:/home/export,nolock,rsize=1024,wsize=1024. > <5>---after parse_early_param------- . > <5>---after parse_args------- . > <5>entered sort_main_extable > <5>exit sort_main_extable > <5>---after sort_main_extable()------- . > <5>---after trap_init()------- . > <5>---after rcu_init()------- > .<6>No pci node on device tree. > <5>---after init_IRQ()------- > .<4>PID hash table entries: 256 (order: 8, 1024 bytes). > <5>---after pidhash_init------- . > <5>---after init_timers------- . > <5>---after hrtimers_init------- . > <5>---after softirq_init------- . > <5>---after timekeeping_init------- > .<7>time_init: decrementer frequency = 16.675000 MHz > .<7>time_init: processor fre quency = 166.750000 MHz. > <5>---after time_init------- . > <5>---after profile_init------- . > <5>---after early_boot_irqs_on------- . > <5>---after local_irq_enable------- > .<6>---entered in cpm_uart_console_init -- . > <5>---after console_init------- . > <5>---after pan ic check------- . > <5>---after lockdep_info------- . > <5>---after locking_selftest------- > .<4>Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) > .<4>Inode-cache hash table entries: 4096 (order: 2, 16384 bytes). > <5>---after vfs_caches_init_early------- . > <5>---cpuset_init_early------- > .<6>Memory: 61612k/65536k available (2848k kernel code, 3860k reserved, 84k data, 276k bss, 152k init). > <5>---after kmem_cache_init------- . > <5>---after locking_selftest------- . > <5>---after radix_tree_init------- . > <5>---after memleak_init------- . > <5>---after setup_per_cpu_pageset------- . > <5>---after numa_policy_init------- . > <5>---after late_time_init------ > .<7>Calibrating delay loop... 33.28 BogoMIPS (lpj=66560). > <5>---after calibrate_delay------- . > <5>---after pidmap_init------ - . > <5>---after pgtable_cache_init------- . > <5>---after prio_tree_init------- . > <5>---after anon_vma_init------- . > <5>---after fork_init------- . > <5>---after proc_caches_init------- . > <5>---after buffer_init------- . > <5>---after unnamed_dev_init------- . > <5>---aft er key_init------- . > <5>---after security_init------- > .<4>Mount-cache hash table entries: 512. > <5>---after vfs_caches_init------- . > <5>---after signals_init------- . > <5>---after page_writeback_init------- > .<3>Initializing container subsys cpuacct > .<3>Initializi ng container subsys debug. > <5>---after container_init------- . > <5>---after cpuset_init------- . > <5>---after taskstats_init_early------ . > <5>---after delayacct_init------- . > <5>---after check_bugs------- . > <5>---after acpi_early_init------- > .<6>-------entry rest_ init-------- > .<6>-------kernel_thread -------- > .<6>----------after numa_default_policy--------- > .<6>-----unlock_kernel-------- > .<6>------------init_idle_bootup_task--------- > .<6>--------preempt_enable_no_resched------ > .<6>NET: Registered protocol family 16 > .<6>PC I: Probing PCI hardware > .<6>Generic PHY: Registered new driver > .<6>NET: Registered protocol family 2 > .<6>------------after schedule--------- > .<6>----------preempt_disable-------. > <5>-----entered cpu_idle ------- > <5>-----entered cpu_idle set_thread_flag -------I P route cache hash table entries: 1024 (order: 0, 4096 bytes) > .<4>TCP established hash table entries: 2048 (order: 2, 16384 bytes) > .<4>TCP bind hash table entries: 2048 (order: 1, 8192 bytes) > .<6>TCP: Hash tables configured (established 2048 bind 2048) > .<6>TCP reno registered > .<6>JFS: nTxBlock = 481, nTxLock = 3854 > .<6>Time: timebase clocksource has been installed. > .<6>Switched to high resolution mode on CPU 0 > .<6>Registering unionfs 2.1.6 (for 2.6.21.7) > .<6>io scheduler noop registered > .<6>Generic RTC Driver v1.07 > .< 3>i8042.c: No controller found. > .<6>Serial: CPM driver $Revision: 0.02 $ > .<6>--cpm_uart_init()---dev = C07E6C08 > .<6>--uart_register_driver() ---ret = 0-- > .<6>cpm_uart_drv_probe: Adding CPM UART 0 > .<6>CPM uart[0]:config_port > .<6>:CPM uart[0]:request port > .<6>pinfo->sccp->scc_sccm > .<6>CPM uart[0]:allocbuf > .<6>CPM uart[0]:init_scc > .<6>ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq = 40) is a CPM UART > .<4>RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize > .<4>Default I/O scheduler not found, using no- op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<6>nbd: registered device at major 43 > .<6>Broa dcom BCM5411: Registered new driver > .<6>Broadcom BCM5421: Registered new driver > .<6>Broadcom BCM5461: Registered new driver > .<6>fs_enet.c:v1.0 (Aug 8, 2005) > .<3>BB MII Bus: Cannot register as MDIO bus > .<4>fsl-bb-mdio: probe of fsl-bb-mdio.0 failed with error -1 > .<3>BB MII Bus: Cannot register as MDIO bus > .<4>fsl-bb-mdio: probe of fsl-bb-mdio.1 failed with error -1 > .<6>No memory reg property [1] in devicetree > .<6>No memory reg property [1] in devicetree > .<6>i2c /dev entries driver. > <5>physmap platform flash device: 020 00000 at fe000000 > .<6>physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. > <5>Support for command set 0002 not present > .<4>gen_probe: No supported Vendor Command Set found > .<3>physmap-flash physmap-flash.0: map_probe failed > .<6>TCP cubic registered > .<6>Initializing XFRM netlink socket > .<6>NET: Registered protocol family 1 > .<6>NET: Registered protocol family 17 > .<6>NET: Registered protocol family 15 > .<6>802.1Q VLAN Support v1.8 Ben Greear<greearb@candelatech.com> > .<6>All bugs added by David S. Miller<davem@red hat.com>. > <5>Looking up port of RPC 100003/2 on 172.16.50.152.... > > > Best regards > Naresh Kamboju > -----Original Message----- > From: Vijay Nikam [mailto:vijay.t.nikam@gmail.com] > Sent: Thursday, July 28, 2011 10:16 AM > To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) > Cc: linuxppc-dev@lists.ozlabs.org; cort@fsmlabs.com; linas@austin.ibm.com; hollis@austin.ibm.com > Subject: Re: HELP:PowerPc-Linux kernel > > Hello, > > Start with looking at the configuration of the board done which is > similar to yours > or based on the same CPU as yours. It is important to know role of > device tree so > read the documentation and understand the syntax and concept of device > tree. Once > the complete concept is understood then you should start the > configuration and achieve > successful creation of kernel image. > > Take a step forward and do some hands on. If any problem occurs then > post for specific help, > as porting itself is a big task and dosent have really straight forward steps. > Good Luck > > Kind Regards, > Vijay Nikam > > On Wed, Jul 27, 2011 at 8:33 PM,<naresh.kamboju@wipro.com> wrote: >> >> Hi, >> >> >> >> I have take up the new assignment Board bring up activity with Linux kernel on PowerPC MPC8272. >> >> I have been searching Linux bring up on PowerPC processor in Google and IBM wiki and not found good stuff. >> >> It would be more helpful for me if you could share related documents. >> >> >> >> Best regards >> >> Naresh Kamboju >> >> >> >> Please do not print this email unless it is absolutely necessary. >> >> The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. >> >> WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. >> >> www.wipro.com >> >> _______________________________________________ >> Linuxppc-dev mailing list >> Linuxppc-dev@lists.ozlabs.org >> https://lists.ozlabs.org/listinfo/linuxppc-dev > > Please do not print this email unless it is absolutely necessary. > > The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. > > WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. > > www.wipro.com > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------ ^ permalink raw reply [flat|nested] 11+ messages in thread
* RE: HELP:PowerPc-Linux kernel 2011-07-30 12:28 ` Gary Thomas @ 2011-08-01 11:31 ` naresh.kamboju 2011-08-01 11:36 ` Gary Thomas 2011-08-01 16:12 ` Scott Wood 0 siblings, 2 replies; 11+ messages in thread From: naresh.kamboju @ 2011-08-01 11:31 UTC (permalink / raw) To: gary, scottwood, david, paulus; +Cc: vijay.t.nikam, cort, linuxppc-dev >Did you try passing 'console=3DttyCPM0' to the bootargs? >I have tried ttyCPM0 no use. Do I need to modify something on boot loader or is there any boot loader can support CPM ? Scott, Is cpm_console_init() must be initialized to fix this issue? >Also, 2.6.21 is truly ancient. Why not try a more recent kernel, especially if >you are just getting srarted? I think this is the time, for me to use latest kernel to work on. BR Naresh Kamboju -----Original Message----- From: Gary Thomas [mailto:gary@mlbassoc.com] Sent: Saturday, July 30, 2011 5:59 PM To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) Cc: linuxppc-dev@lists.ozlabs.org; scottwood@freescale.com; vijay.t.nikam@gmail.com; cort@fsmlabs.com Subject: Re: HELP:PowerPc-Linux kernel On 2011-07-30 06:21, naresh.kamboju@wipro.com wrote: > Hi All, > > I have started working on powerpc board bring up. I have prepared dtb file and booted linux kernel with my debug statement. > Problem: > I could not see anything on the serial console. By using the emulator I can read __log_buf and found below info. > > How can I initialize the serial console? > Here "ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq =3D 40) is a CPM UART" is detected by kernel and where we generally pass boot args as ttyS0. > May I the relation between ttyCPM0 and ttyS0. > How can I see kernel boot console on the serial port? It would be helpful if you share any workarounds. Did you try passing 'console=3DttyCPM0' to the bootargs? Also, 2.6.21 is truly ancient. Why not try a more recent kernel, especially if you are just getting srarted? > > Below print out is from emulator by reading __log_buf and parsed as readable log. > > <6>Using MPC82xx ADS machine description > .<3>Initializing container subsys cpu. > <5>Linux version 2.6.21.7-hrt1-cfs-v22-grsec-WR2.0bl_cgl (vanga@linux) (gcc version 4.1.2 (Wind River Linux Sourcery G++ 4.1-91)) #18 Sat Jul 30 14:39:06 IST 2011 > .<7>Entering add_active_range(0, 0, 16384) 0 entries of 256 used > .<6>No memory reg property [1] in devicetree > .<7>Top of RAM: 0x4000000, Total RAM: 0x4000000 > .<7>Memory hole size: 0MB > .<4>Zone PFN ranges: > .<4> DMA 0 -> 16384 > .<4> Normal 16384 -> 16384 > .< 4>early_node_map[1] active PFN ranges > .<4> 0: 0 -> 16384 > .<7>On node 0 totalpages: 16384 > .<7> DMA zone: 128 pages used for memmap > .<7> DMA zone: 0 pages reserved > .<7> DMA zone: 16256 pages, LIFO batch:3 > .<7> Normal zone: 0 pages used for memmap.<4>Built 1 zonelists. Total pages: 16256. > <5>Kernel command line: mem=3D64M console=3DttyS0,9600n8 root=3D/dev/nfs r= w nfsroot=3D172.16.50.152:/home/export,nolock,rsize=3D1024,wsize=3D1024. > <5>---after parse_early_param------- . > <5>---after parse_args------- . > <5>entered sort_main_extable > <5>exit sort_main_extable > <5>---after sort_main_extable()------- . > <5>---after trap_init()------- . > <5>---after rcu_init()------- > .<6>No pci node on device tree. > <5>---after init_IRQ()------- > .<4>PID hash table entries: 256 (order: 8, 1024 bytes). > <5>---after pidhash_init------- . > <5>---after init_timers------- . > <5>---after hrtimers_init------- . > <5>---after softirq_init------- . > <5>---after timekeeping_init------- > .<7>time_init: decrementer frequency =3D 16.675000 MHz > .<7>time_init: processor fre quency =3D 166.750000 MHz. > <5>---after time_init------- . > <5>---after profile_init------- . > <5>---after early_boot_irqs_on------- . > <5>---after local_irq_enable------- > .<6>---entered in cpm_uart_console_init -- . > <5>---after console_init------- . > <5>---after pan ic check------- . > <5>---after lockdep_info------- . > <5>---after locking_selftest------- > .<4>Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) > .<4>Inode-cache hash table entries: 4096 (order: 2, 16384 bytes). > <5>---after vfs_caches_init_early------- . > <5>---cpuset_init_early------- > .<6>Memory: 61612k/65536k available (2848k kernel code, 3860k reserved, 84k data, 276k bss, 152k init). > <5>---after kmem_cache_init------- . > <5>---after locking_selftest------- . > <5>---after radix_tree_init------- . > <5>---after memleak_init------- . > <5>---after setup_per_cpu_pageset------- . > <5>---after numa_policy_init------- . > <5>---after late_time_init------ > .<7>Calibrating delay loop... 33.28 BogoMIPS (lpj=3D66560). > <5>---after calibrate_delay------- . > <5>---after pidmap_init------ - . > <5>---after pgtable_cache_init------- . > <5>---after prio_tree_init------- . > <5>---after anon_vma_init------- . > <5>---after fork_init------- . > <5>---after proc_caches_init------- . > <5>---after buffer_init------- . > <5>---after unnamed_dev_init------- . > <5>---aft er key_init------- . > <5>---after security_init------- > .<4>Mount-cache hash table entries: 512. > <5>---after vfs_caches_init------- . > <5>---after signals_init------- . > <5>---after page_writeback_init------- > .<3>Initializing container subsys cpuacct > .<3>Initializi ng container subsys debug. > <5>---after container_init------- . > <5>---after cpuset_init------- . > <5>---after taskstats_init_early------ . > <5>---after delayacct_init------- . > <5>---after check_bugs------- . > <5>---after acpi_early_init------- > .<6>-------entry rest_ init-------- > .<6>-------kernel_thread -------- > .<6>----------after numa_default_policy--------- > .<6>-----unlock_kernel-------- > .<6>------------init_idle_bootup_task--------- > .<6>--------preempt_enable_no_resched------ > .<6>NET: Registered protocol family 16 > .<6>PC I: Probing PCI hardware > .<6>Generic PHY: Registered new driver > .<6>NET: Registered protocol family 2 > .<6>------------after schedule--------- > .<6>----------preempt_disable-------. > <5>-----entered cpu_idle ------- > <5>-----entered cpu_idle set_thread_flag -------I P route cache hash table entries: 1024 (order: 0, 4096 bytes) > .<4>TCP established hash table entries: 2048 (order: 2, 16384 bytes) > .<4>TCP bind hash table entries: 2048 (order: 1, 8192 bytes) > .<6>TCP: Hash tables configured (established 2048 bind 2048) > .<6>TCP reno registered > .<6>JFS: nTxBlock =3D 481, nTxLock =3D 3854 > .<6>Time: timebase clocksource has been installed. > .<6>Switched to high resolution mode on CPU 0 > .<6>Registering unionfs 2.1.6 (for 2.6.21.7) > .<6>io scheduler noop registered > .<6>Generic RTC Driver v1.07 > .< 3>i8042.c: No controller found. > .<6>Serial: CPM driver $Revision: 0.02 $ > .<6>--cpm_uart_init()---dev =3D C07E6C08 > .<6>--uart_register_driver() ---ret =3D 0-- > .<6>cpm_uart_drv_probe: Adding CPM UART 0 > .<6>CPM uart[0]:config_port > .<6>:CPM uart[0]:request port > .<6>pinfo->sccp->scc_sccm > .<6>CPM uart[0]:allocbuf > .<6>CPM uart[0]:init_scc > .<6>ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq =3D 40) is a CPM UART > .<4>RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize > .<4>Default I/O scheduler not found, using no- op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<4>Default I/O scheduler not found, using no-op > .<6>nbd: registered device at major 43 > .<6>Broa dcom BCM5411: Registered new driver > .<6>Broadcom BCM5421: Registered new driver > .<6>Broadcom BCM5461: Registered new driver > .<6>fs_enet.c:v1.0 (Aug 8, 2005) > .<3>BB MII Bus: Cannot register as MDIO bus > .<4>fsl-bb-mdio: probe of fsl-bb-mdio.0 failed with error -1 > .<3>BB MII Bus: Cannot register as MDIO bus > .<4>fsl-bb-mdio: probe of fsl-bb-mdio.1 failed with error -1 > .<6>No memory reg property [1] in devicetree > .<6>No memory reg property [1] in devicetree > .<6>i2c /dev entries driver. > <5>physmap platform flash device: 020 00000 at fe000000 > .<6>physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. > <5>Support for command set 0002 not present > .<4>gen_probe: No supported Vendor Command Set found > .<3>physmap-flash physmap-flash.0: map_probe failed > .<6>TCP cubic registered > .<6>Initializing XFRM netlink socket > .<6>NET: Registered protocol family 1 > .<6>NET: Registered protocol family 17 > .<6>NET: Registered protocol family 15 > .<6>802.1Q VLAN Support v1.8 Ben Greear<greearb@candelatech.com> > .<6>All bugs added by David S. Miller<davem@red hat.com>. > <5>Looking up port of RPC 100003/2 on 172.16.50.152.... > > > Best regards > Naresh Kamboju > -----Original Message----- > From: Vijay Nikam [mailto:vijay.t.nikam@gmail.com] > Sent: Thursday, July 28, 2011 10:16 AM > To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) > Cc: linuxppc-dev@lists.ozlabs.org; cort@fsmlabs.com; linas@austin.ibm.com; hollis@austin.ibm.com > Subject: Re: HELP:PowerPc-Linux kernel > > Hello, > > Start with looking at the configuration of the board done which is > similar to yours > or based on the same CPU as yours. It is important to know role of > device tree so > read the documentation and understand the syntax and concept of device > tree. Once > the complete concept is understood then you should start the > configuration and achieve > successful creation of kernel image. > > Take a step forward and do some hands on. If any problem occurs then > post for specific help, > as porting itself is a big task and dosent have really straight forward steps. > Good Luck > > Kind Regards, > Vijay Nikam > > On Wed, Jul 27, 2011 at 8:33 PM,<naresh.kamboju@wipro.com> wrote: >> >> Hi, >> >> >> >> I have take up the new assignment Board bring up activity with Linux kernel on PowerPC MPC8272. >> >> I have been searching Linux bring up on PowerPC processor in Google and IBM wiki and not found good stuff. >> >> It would be more helpful for me if you could share related documents. >> >> >> >> Best regards >> >> Naresh Kamboju >> >> >> >> Please do not print this email unless it is absolutely necessary. >> >> The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. >> >> WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. >> >> www.wipro.com >> >> _______________________________________________ >> Linuxppc-dev mailing list >> Linuxppc-dev@lists.ozlabs.org >> https://lists.ozlabs.org/listinfo/linuxppc-dev > > Please do not print this email unless it is absolutely necessary. > > The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. > > WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. > > www.wipro.com > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------ Please do not print this email unless it is absolutely necessary. =0A= =0A= The information contained in this electronic message and any attachments to= this message are intended for the exclusive use of the addressee(s) and may= contain proprietary, confidential or privileged information. If you are not= the intended recipient, you should not disseminate, distribute or copy this= e-mail. Please notify the sender immediately and destroy all copies of this= message and any attachments. =0A= =0A= WARNING: Computer viruses can be transmitted via email. The recipient should= check this email and any attachments for the presence of viruses. The compa= ny accepts no liability for any damage caused by any virus transmitted by th= is email. =0A= =0A= www.wipro.com ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: HELP:PowerPc-Linux kernel 2011-08-01 11:31 ` naresh.kamboju @ 2011-08-01 11:36 ` Gary Thomas 2011-08-01 12:29 ` naresh.kamboju 2011-08-01 16:12 ` Scott Wood 1 sibling, 1 reply; 11+ messages in thread From: Gary Thomas @ 2011-08-01 11:36 UTC (permalink / raw) To: naresh.kamboju Cc: vijay.t.nikam, paulus, scottwood, cort, linuxppc-dev, david On 2011-08-01 05:31, naresh.kamboju@wipro.com wrote: >> Did you try passing 'console=ttyCPM0' to the bootargs? >> I have tried ttyCPM0 no use. > Do I need to modify something on boot loader or is there any boot loader > can support CPM ? What boot loader does your board use? > > Scott, > Is cpm_console_init() must be initialized to fix this issue? > > >> Also, 2.6.21 is truly ancient. Why not try a more recent kernel, > especially if >> you are just getting srarted? > I think this is the time, for me to use latest kernel to work on. > > BR Naresh Kamboju > > -----Original Message----- > From: Gary Thomas [mailto:gary@mlbassoc.com] > Sent: Saturday, July 30, 2011 5:59 PM > To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) > Cc: linuxppc-dev@lists.ozlabs.org; scottwood@freescale.com; > vijay.t.nikam@gmail.com; cort@fsmlabs.com > Subject: Re: HELP:PowerPc-Linux kernel > > On 2011-07-30 06:21, naresh.kamboju@wipro.com wrote: >> Hi All, >> >> I have started working on powerpc board bring up. I have prepared dtb > file and booted linux kernel with my debug statement. >> Problem: >> I could not see anything on the serial console. By using the emulator > I can read __log_buf and found below info. >> >> How can I initialize the serial console? >> Here "ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq = 40) is a CPM UART" > is detected by kernel and where we generally pass boot args as ttyS0. >> May I the relation between ttyCPM0 and ttyS0. >> How can I see kernel boot console on the serial port? It would be > helpful if you share any workarounds. > > Did you try passing 'console=ttyCPM0' to the bootargs? > > Also, 2.6.21 is truly ancient. Why not try a more recent kernel, > especially if > you are just getting srarted? > >> >> Below print out is from emulator by reading __log_buf and parsed as > readable log. >> >> <6>Using MPC82xx ADS machine description >> .<3>Initializing container subsys cpu. >> <5>Linux version 2.6.21.7-hrt1-cfs-v22-grsec-WR2.0bl_cgl (vanga@linux) > (gcc version 4.1.2 (Wind River Linux Sourcery G++ 4.1-91)) #18 Sat Jul > 30 14:39:06 IST 2011 >> .<7>Entering add_active_range(0, 0, 16384) 0 entries of 256 used >> .<6>No memory reg property [1] in devicetree >> .<7>Top of RAM: 0x4000000, Total RAM: 0x4000000 >> .<7>Memory hole size: 0MB >> .<4>Zone PFN ranges: >> .<4> DMA 0 -> 16384 >> .<4> Normal 16384 -> 16384 >> .< 4>early_node_map[1] active PFN ranges >> .<4> 0: 0 -> 16384 >> .<7>On node 0 totalpages: 16384 >> .<7> DMA zone: 128 pages used for memmap >> .<7> DMA zone: 0 pages reserved >> .<7> DMA zone: 16256 pages, LIFO batch:3 >> .<7> Normal zone: 0 pages used for memmap.<4>Built 1 zonelists. > Total pages: 16256. >> <5>Kernel command line: mem=64M console=ttyS0,9600n8 root=/dev/nfs rw > nfsroot=172.16.50.152:/home/export,nolock,rsize=1024,wsize=1024. >> <5>---after parse_early_param------- . >> <5>---after parse_args------- . >> <5>entered sort_main_extable >> <5>exit sort_main_extable >> <5>---after sort_main_extable()------- . >> <5>---after trap_init()------- . >> <5>---after rcu_init()------- >> .<6>No pci node on device tree. >> <5>---after init_IRQ()------- >> .<4>PID hash table entries: 256 (order: 8, 1024 bytes). >> <5>---after pidhash_init------- . >> <5>---after init_timers------- . >> <5>---after hrtimers_init------- . >> <5>---after softirq_init------- . >> <5>---after timekeeping_init------- >> .<7>time_init: decrementer frequency = 16.675000 MHz >> .<7>time_init: processor fre quency = 166.750000 MHz. >> <5>---after time_init------- . >> <5>---after profile_init------- . >> <5>---after early_boot_irqs_on------- . >> <5>---after local_irq_enable------- >> .<6>---entered in cpm_uart_console_init -- . >> <5>---after console_init------- . >> <5>---after pan ic check------- . >> <5>---after lockdep_info------- . >> <5>---after locking_selftest------- >> .<4>Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) >> .<4>Inode-cache hash table entries: 4096 (order: 2, 16384 bytes). >> <5>---after vfs_caches_init_early------- . >> <5>---cpuset_init_early------- >> .<6>Memory: 61612k/65536k available (2848k kernel code, 3860k > reserved, 84k data, 276k bss, 152k init). >> <5>---after kmem_cache_init------- . >> <5>---after locking_selftest------- . >> <5>---after radix_tree_init------- . >> <5>---after memleak_init------- . >> <5>---after setup_per_cpu_pageset------- . >> <5>---after numa_policy_init------- . >> <5>---after late_time_init------ >> .<7>Calibrating delay loop... 33.28 BogoMIPS (lpj=66560). >> <5>---after calibrate_delay------- . >> <5>---after pidmap_init------ - . >> <5>---after pgtable_cache_init------- . >> <5>---after prio_tree_init------- . >> <5>---after anon_vma_init------- . >> <5>---after fork_init------- . >> <5>---after proc_caches_init------- . >> <5>---after buffer_init------- . >> <5>---after unnamed_dev_init------- . >> <5>---aft er key_init------- . >> <5>---after security_init------- >> .<4>Mount-cache hash table entries: 512. >> <5>---after vfs_caches_init------- . >> <5>---after signals_init------- . >> <5>---after page_writeback_init------- >> .<3>Initializing container subsys cpuacct >> .<3>Initializi ng container subsys debug. >> <5>---after container_init------- . >> <5>---after cpuset_init------- . >> <5>---after taskstats_init_early------ . >> <5>---after delayacct_init------- . >> <5>---after check_bugs------- . >> <5>---after acpi_early_init------- >> .<6>-------entry rest_ init-------- >> .<6>-------kernel_thread -------- >> .<6>----------after numa_default_policy--------- >> .<6>-----unlock_kernel-------- >> .<6>------------init_idle_bootup_task--------- >> .<6>--------preempt_enable_no_resched------ >> .<6>NET: Registered protocol family 16 >> .<6>PC I: Probing PCI hardware >> .<6>Generic PHY: Registered new driver >> .<6>NET: Registered protocol family 2 >> .<6>------------after schedule--------- >> .<6>----------preempt_disable-------. >> <5>-----entered cpu_idle ------- >> <5>-----entered cpu_idle set_thread_flag -------I P route cache > hash table entries: 1024 (order: 0, 4096 bytes) >> .<4>TCP established hash table entries: 2048 (order: 2, 16384 bytes) >> .<4>TCP bind hash table entries: 2048 (order: 1, 8192 bytes) >> .<6>TCP: Hash tables configured (established 2048 bind 2048) >> .<6>TCP reno registered >> .<6>JFS: nTxBlock = 481, nTxLock = 3854 >> .<6>Time: timebase clocksource has been installed. >> .<6>Switched to high resolution mode on CPU 0 >> .<6>Registering unionfs 2.1.6 (for 2.6.21.7) >> .<6>io scheduler noop registered >> .<6>Generic RTC Driver v1.07 >> .< 3>i8042.c: No controller found. >> .<6>Serial: CPM driver $Revision: 0.02 $ >> .<6>--cpm_uart_init()---dev = C07E6C08 >> .<6>--uart_register_driver() ---ret = 0-- >> .<6>cpm_uart_drv_probe: Adding CPM UART 0 >> .<6>CPM uart[0]:config_port >> .<6>:CPM uart[0]:request port >> .<6>pinfo->sccp->scc_sccm >> .<6>CPM uart[0]:allocbuf >> .<6>CPM uart[0]:init_scc >> .<6>ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq = 40) is a CPM UART >> .<4>RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 > blocksize >> .<4>Default I/O scheduler not found, using no- op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<6>nbd: registered device at major 43 >> .<6>Broa dcom BCM5411: Registered new driver >> .<6>Broadcom BCM5421: Registered new driver >> .<6>Broadcom BCM5461: Registered new driver >> .<6>fs_enet.c:v1.0 (Aug 8, 2005) >> .<3>BB MII Bus: Cannot register as MDIO bus >> .<4>fsl-bb-mdio: probe of fsl-bb-mdio.0 failed with error -1 >> .<3>BB MII Bus: Cannot register as MDIO bus >> .<4>fsl-bb-mdio: probe of fsl-bb-mdio.1 failed with error -1 >> .<6>No memory reg property [1] in devicetree >> .<6>No memory reg property [1] in devicetree >> .<6>i2c /dev entries driver. >> <5>physmap platform flash device: 020 00000 at fe000000 >> .<6>physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. >> <5>Support for command set 0002 not present >> .<4>gen_probe: No supported Vendor Command Set found >> .<3>physmap-flash physmap-flash.0: map_probe failed >> .<6>TCP cubic registered >> .<6>Initializing XFRM netlink socket >> .<6>NET: Registered protocol family 1 >> .<6>NET: Registered protocol family 17 >> .<6>NET: Registered protocol family 15 >> .<6>802.1Q VLAN Support v1.8 Ben Greear<greearb@candelatech.com> >> .<6>All bugs added by David S. Miller<davem@red hat.com>. >> <5>Looking up port of RPC 100003/2 on 172.16.50.152.... >> >> >> Best regards >> Naresh Kamboju >> -----Original Message----- >> From: Vijay Nikam [mailto:vijay.t.nikam@gmail.com] >> Sent: Thursday, July 28, 2011 10:16 AM >> To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) >> Cc: linuxppc-dev@lists.ozlabs.org; cort@fsmlabs.com; > linas@austin.ibm.com; hollis@austin.ibm.com >> Subject: Re: HELP:PowerPc-Linux kernel >> >> Hello, >> >> Start with looking at the configuration of the board done which is >> similar to yours >> or based on the same CPU as yours. It is important to know role of >> device tree so >> read the documentation and understand the syntax and concept of device >> tree. Once >> the complete concept is understood then you should start the >> configuration and achieve >> successful creation of kernel image. >> >> Take a step forward and do some hands on. If any problem occurs then >> post for specific help, >> as porting itself is a big task and dosent have really straight > forward steps. >> Good Luck >> >> Kind Regards, >> Vijay Nikam >> >> On Wed, Jul 27, 2011 at 8:33 PM,<naresh.kamboju@wipro.com> wrote: >>> >>> Hi, >>> >>> >>> >>> I have take up the new assignment Board bring up activity with Linux > kernel on PowerPC MPC8272. >>> >>> I have been searching Linux bring up on PowerPC processor in Google > and IBM wiki and not found good stuff. >>> >>> It would be more helpful for me if you could share related documents. >>> >>> >>> >>> Best regards >>> >>> Naresh Kamboju >>> >>> >>> >>> Please do not print this email unless it is absolutely necessary. >>> >>> The information contained in this electronic message and any > attachments to this message are intended for the exclusive use of the > addressee(s) and may contain proprietary, confidential or privileged > information. If you are not the intended recipient, you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately and destroy all copies of this message and any attachments. >>> >>> WARNING: Computer viruses can be transmitted via email. The recipient > should check this email and any attachments for the presence of viruses. > The company accepts no liability for any damage caused by any virus > transmitted by this email. >>> >>> www.wipro.com >>> >>> _______________________________________________ >>> Linuxppc-dev mailing list >>> Linuxppc-dev@lists.ozlabs.org >>> https://lists.ozlabs.org/listinfo/linuxppc-dev >> >> Please do not print this email unless it is absolutely necessary. >> >> The information contained in this electronic message and any > attachments to this message are intended for the exclusive use of the > addressee(s) and may contain proprietary, confidential or privileged > information. If you are not the intended recipient, you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately and destroy all copies of this message and any attachments. >> >> WARNING: Computer viruses can be transmitted via email. The recipient > should check this email and any attachments for the presence of viruses. > The company accepts no liability for any damage caused by any virus > transmitted by this email. >> >> www.wipro.com >> _______________________________________________ >> Linuxppc-dev mailing list >> Linuxppc-dev@lists.ozlabs.org >> https://lists.ozlabs.org/listinfo/linuxppc-dev > -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------ ^ permalink raw reply [flat|nested] 11+ messages in thread
* RE: HELP:PowerPc-Linux kernel 2011-08-01 11:36 ` Gary Thomas @ 2011-08-01 12:29 ` naresh.kamboju 0 siblings, 0 replies; 11+ messages in thread From: naresh.kamboju @ 2011-08-01 12:29 UTC (permalink / raw) To: gary; +Cc: vijay.t.nikam, paulus, scottwood, cort, linuxppc-dev, david >What boot loader does your board use? Boot loader 1.3.0 -----Original Message----- From: Gary Thomas [mailto:gary@mlbassoc.com] Sent: Monday, August 01, 2011 5:06 PM To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) Cc: scottwood@freescale.com; david@gibson.dropbear.id.au; paulus@samba.org; linuxppc-dev@lists.ozlabs.org; vijay.t.nikam@gmail.com; cort@fsmlabs.com Subject: Re: HELP:PowerPc-Linux kernel On 2011-08-01 05:31, naresh.kamboju@wipro.com wrote: >> Did you try passing 'console=3DttyCPM0' to the bootargs? >> I have tried ttyCPM0 no use. > Do I need to modify something on boot loader or is there any boot loader > can support CPM ? What boot loader does your board use? > > Scott, > Is cpm_console_init() must be initialized to fix this issue? > > >> Also, 2.6.21 is truly ancient. Why not try a more recent kernel, > especially if >> you are just getting srarted? > I think this is the time, for me to use latest kernel to work on. > > BR Naresh Kamboju > > -----Original Message----- > From: Gary Thomas [mailto:gary@mlbassoc.com] > Sent: Saturday, July 30, 2011 5:59 PM > To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) > Cc: linuxppc-dev@lists.ozlabs.org; scottwood@freescale.com; > vijay.t.nikam@gmail.com; cort@fsmlabs.com > Subject: Re: HELP:PowerPc-Linux kernel > > On 2011-07-30 06:21, naresh.kamboju@wipro.com wrote: >> Hi All, >> >> I have started working on powerpc board bring up. I have prepared dtb > file and booted linux kernel with my debug statement. >> Problem: >> I could not see anything on the serial console. By using the emulator > I can read __log_buf and found below info. >> >> How can I initialize the serial console? >> Here "ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq =3D 40) is a CPM UART" > is detected by kernel and where we generally pass boot args as ttyS0. >> May I the relation between ttyCPM0 and ttyS0. >> How can I see kernel boot console on the serial port? It would be > helpful if you share any workarounds. > > Did you try passing 'console=3DttyCPM0' to the bootargs? > > Also, 2.6.21 is truly ancient. Why not try a more recent kernel, > especially if > you are just getting srarted? > >> >> Below print out is from emulator by reading __log_buf and parsed as > readable log. >> >> <6>Using MPC82xx ADS machine description >> .<3>Initializing container subsys cpu. >> <5>Linux version 2.6.21.7-hrt1-cfs-v22-grsec-WR2.0bl_cgl (vanga@linux) > (gcc version 4.1.2 (Wind River Linux Sourcery G++ 4.1-91)) #18 Sat Jul > 30 14:39:06 IST 2011 >> .<7>Entering add_active_range(0, 0, 16384) 0 entries of 256 used >> .<6>No memory reg property [1] in devicetree >> .<7>Top of RAM: 0x4000000, Total RAM: 0x4000000 >> .<7>Memory hole size: 0MB >> .<4>Zone PFN ranges: >> .<4> DMA 0 -> 16384 >> .<4> Normal 16384 -> 16384 >> .< 4>early_node_map[1] active PFN ranges >> .<4> 0: 0 -> 16384 >> .<7>On node 0 totalpages: 16384 >> .<7> DMA zone: 128 pages used for memmap >> .<7> DMA zone: 0 pages reserved >> .<7> DMA zone: 16256 pages, LIFO batch:3 >> .<7> Normal zone: 0 pages used for memmap.<4>Built 1 zonelists. > Total pages: 16256. >> <5>Kernel command line: mem=3D64M console=3DttyS0,9600n8 root=3D/dev/nfs= rw > nfsroot=3D172.16.50.152:/home/export,nolock,rsize=3D1024,wsize=3D1024. >> <5>---after parse_early_param------- . >> <5>---after parse_args------- . >> <5>entered sort_main_extable >> <5>exit sort_main_extable >> <5>---after sort_main_extable()------- . >> <5>---after trap_init()------- . >> <5>---after rcu_init()------- >> .<6>No pci node on device tree. >> <5>---after init_IRQ()------- >> .<4>PID hash table entries: 256 (order: 8, 1024 bytes). >> <5>---after pidhash_init------- . >> <5>---after init_timers------- . >> <5>---after hrtimers_init------- . >> <5>---after softirq_init------- . >> <5>---after timekeeping_init------- >> .<7>time_init: decrementer frequency =3D 16.675000 MHz >> .<7>time_init: processor fre quency =3D 166.750000 MHz. >> <5>---after time_init------- . >> <5>---after profile_init------- . >> <5>---after early_boot_irqs_on------- . >> <5>---after local_irq_enable------- >> .<6>---entered in cpm_uart_console_init -- . >> <5>---after console_init------- . >> <5>---after pan ic check------- . >> <5>---after lockdep_info------- . >> <5>---after locking_selftest------- >> .<4>Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) >> .<4>Inode-cache hash table entries: 4096 (order: 2, 16384 bytes). >> <5>---after vfs_caches_init_early------- . >> <5>---cpuset_init_early------- >> .<6>Memory: 61612k/65536k available (2848k kernel code, 3860k > reserved, 84k data, 276k bss, 152k init). >> <5>---after kmem_cache_init------- . >> <5>---after locking_selftest------- . >> <5>---after radix_tree_init------- . >> <5>---after memleak_init------- . >> <5>---after setup_per_cpu_pageset------- . >> <5>---after numa_policy_init------- . >> <5>---after late_time_init------ >> .<7>Calibrating delay loop... 33.28 BogoMIPS (lpj=3D66560). >> <5>---after calibrate_delay------- . >> <5>---after pidmap_init------ - . >> <5>---after pgtable_cache_init------- . >> <5>---after prio_tree_init------- . >> <5>---after anon_vma_init------- . >> <5>---after fork_init------- . >> <5>---after proc_caches_init------- . >> <5>---after buffer_init------- . >> <5>---after unnamed_dev_init------- . >> <5>---aft er key_init------- . >> <5>---after security_init------- >> .<4>Mount-cache hash table entries: 512. >> <5>---after vfs_caches_init------- . >> <5>---after signals_init------- . >> <5>---after page_writeback_init------- >> .<3>Initializing container subsys cpuacct >> .<3>Initializi ng container subsys debug. >> <5>---after container_init------- . >> <5>---after cpuset_init------- . >> <5>---after taskstats_init_early------ . >> <5>---after delayacct_init------- . >> <5>---after check_bugs------- . >> <5>---after acpi_early_init------- >> .<6>-------entry rest_ init-------- >> .<6>-------kernel_thread -------- >> .<6>----------after numa_default_policy--------- >> .<6>-----unlock_kernel-------- >> .<6>------------init_idle_bootup_task--------- >> .<6>--------preempt_enable_no_resched------ >> .<6>NET: Registered protocol family 16 >> .<6>PC I: Probing PCI hardware >> .<6>Generic PHY: Registered new driver >> .<6>NET: Registered protocol family 2 >> .<6>------------after schedule--------- >> .<6>----------preempt_disable-------. >> <5>-----entered cpu_idle ------- >> <5>-----entered cpu_idle set_thread_flag -------I P route cache > hash table entries: 1024 (order: 0, 4096 bytes) >> .<4>TCP established hash table entries: 2048 (order: 2, 16384 bytes) >> .<4>TCP bind hash table entries: 2048 (order: 1, 8192 bytes) >> .<6>TCP: Hash tables configured (established 2048 bind 2048) >> .<6>TCP reno registered >> .<6>JFS: nTxBlock =3D 481, nTxLock =3D 3854 >> .<6>Time: timebase clocksource has been installed. >> .<6>Switched to high resolution mode on CPU 0 >> .<6>Registering unionfs 2.1.6 (for 2.6.21.7) >> .<6>io scheduler noop registered >> .<6>Generic RTC Driver v1.07 >> .< 3>i8042.c: No controller found. >> .<6>Serial: CPM driver $Revision: 0.02 $ >> .<6>--cpm_uart_init()---dev =3D C07E6C08 >> .<6>--uart_register_driver() ---ret =3D 0-- >> .<6>cpm_uart_drv_probe: Adding CPM UART 0 >> .<6>CPM uart[0]:config_port >> .<6>:CPM uart[0]:request port >> .<6>pinfo->sccp->scc_sccm >> .<6>CPM uart[0]:allocbuf >> .<6>CPM uart[0]:init_scc >> .<6>ttyCPM0 at MMIO map 0xc504aa00 mem 0x0 (irq =3D 40) is a CPM UART >> .<4>RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 > blocksize >> .<4>Default I/O scheduler not found, using no- op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<4>Default I/O scheduler not found, using no-op >> .<6>nbd: registered device at major 43 >> .<6>Broa dcom BCM5411: Registered new driver >> .<6>Broadcom BCM5421: Registered new driver >> .<6>Broadcom BCM5461: Registered new driver >> .<6>fs_enet.c:v1.0 (Aug 8, 2005) >> .<3>BB MII Bus: Cannot register as MDIO bus >> .<4>fsl-bb-mdio: probe of fsl-bb-mdio.0 failed with error -1 >> .<3>BB MII Bus: Cannot register as MDIO bus >> .<4>fsl-bb-mdio: probe of fsl-bb-mdio.1 failed with error -1 >> .<6>No memory reg property [1] in devicetree >> .<6>No memory reg property [1] in devicetree >> .<6>i2c /dev entries driver. >> <5>physmap platform flash device: 020 00000 at fe000000 >> .<6>physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. >> <5>Support for command set 0002 not present >> .<4>gen_probe: No supported Vendor Command Set found >> .<3>physmap-flash physmap-flash.0: map_probe failed >> .<6>TCP cubic registered >> .<6>Initializing XFRM netlink socket >> .<6>NET: Registered protocol family 1 >> .<6>NET: Registered protocol family 17 >> .<6>NET: Registered protocol family 15 >> .<6>802.1Q VLAN Support v1.8 Ben Greear<greearb@candelatech.com> >> .<6>All bugs added by David S. Miller<davem@red hat.com>. >> <5>Looking up port of RPC 100003/2 on 172.16.50.152.... >> >> >> Best regards >> Naresh Kamboju >> -----Original Message----- >> From: Vijay Nikam [mailto:vijay.t.nikam@gmail.com] >> Sent: Thursday, July 28, 2011 10:16 AM >> To: Naresh Kamboju (WT01 - GMT-Telecom Equipment) >> Cc: linuxppc-dev@lists.ozlabs.org; cort@fsmlabs.com; > linas@austin.ibm.com; hollis@austin.ibm.com >> Subject: Re: HELP:PowerPc-Linux kernel >> >> Hello, >> >> Start with looking at the configuration of the board done which is >> similar to yours >> or based on the same CPU as yours. It is important to know role of >> device tree so >> read the documentation and understand the syntax and concept of device >> tree. Once >> the complete concept is understood then you should start the >> configuration and achieve >> successful creation of kernel image. >> >> Take a step forward and do some hands on. If any problem occurs then >> post for specific help, >> as porting itself is a big task and dosent have really straight > forward steps. >> Good Luck >> >> Kind Regards, >> Vijay Nikam >> >> On Wed, Jul 27, 2011 at 8:33 PM,<naresh.kamboju@wipro.com> wrote: >>> >>> Hi, >>> >>> >>> >>> I have take up the new assignment Board bring up activity with Linux > kernel on PowerPC MPC8272. >>> >>> I have been searching Linux bring up on PowerPC processor in Google > and IBM wiki and not found good stuff. >>> >>> It would be more helpful for me if you could share related documents. >>> >>> >>> >>> Best regards >>> >>> Naresh Kamboju >>> >>> >>> >>> Please do not print this email unless it is absolutely necessary. >>> >>> The information contained in this electronic message and any > attachments to this message are intended for the exclusive use of the > addressee(s) and may contain proprietary, confidential or privileged > information. If you are not the intended recipient, you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately and destroy all copies of this message and any attachments. >>> >>> WARNING: Computer viruses can be transmitted via email. The recipient > should check this email and any attachments for the presence of viruses. > The company accepts no liability for any damage caused by any virus > transmitted by this email. >>> >>> www.wipro.com >>> >>> _______________________________________________ >>> Linuxppc-dev mailing list >>> Linuxppc-dev@lists.ozlabs.org >>> https://lists.ozlabs.org/listinfo/linuxppc-dev >> >> Please do not print this email unless it is absolutely necessary. >> >> The information contained in this electronic message and any > attachments to this message are intended for the exclusive use of the > addressee(s) and may contain proprietary, confidential or privileged > information. If you are not the intended recipient, you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately and destroy all copies of this message and any attachments. >> >> WARNING: Computer viruses can be transmitted via email. The recipient > should check this email and any attachments for the presence of viruses. > The company accepts no liability for any damage caused by any virus > transmitted by this email. >> >> www.wipro.com >> _______________________________________________ >> Linuxppc-dev mailing list >> Linuxppc-dev@lists.ozlabs.org >> https://lists.ozlabs.org/listinfo/linuxppc-dev > -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------ Please do not print this email unless it is absolutely necessary. =0A= =0A= The information contained in this electronic message and any attachments to= this message are intended for the exclusive use of the addressee(s) and may= contain proprietary, confidential or privileged information. If you are not= the intended recipient, you should not disseminate, distribute or copy this= e-mail. Please notify the sender immediately and destroy all copies of this= message and any attachments. =0A= =0A= WARNING: Computer viruses can be transmitted via email. The recipient should= check this email and any attachments for the presence of viruses. The compa= ny accepts no liability for any damage caused by any virus transmitted by th= is email. =0A= =0A= www.wipro.com ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: HELP:PowerPc-Linux kernel 2011-08-01 11:31 ` naresh.kamboju 2011-08-01 11:36 ` Gary Thomas @ 2011-08-01 16:12 ` Scott Wood 1 sibling, 0 replies; 11+ messages in thread From: Scott Wood @ 2011-08-01 16:12 UTC (permalink / raw) To: naresh.kamboju; +Cc: vijay.t.nikam, gary, paulus, cort, linuxppc-dev, david On Mon, 1 Aug 2011 17:01:27 +0530 <naresh.kamboju@wipro.com> wrote: > >Did you try passing 'console=ttyCPM0' to the bootargs? > >I have tried ttyCPM0 no use. Have you tried specifying the baud rate? > Do I need to modify something on boot loader or is there any boot loader > can support CPM ? > > Scott, > Is cpm_console_init() must be initialized to fix this issue? Please start with the latest kernel. Upgrade U-Boot as well if you have a way to recover if the new image doesn't work (e.g. a BDI). You don't need the bootwrapper for the main serial driver to work. You may need some board-specific pin/port init, though at least the serial port that U-Boot uses should already be set up, assuming it worked in U-Boot of course. :-) If it still doesn't work after switching to a current kernel, try dumping CPM registers, instrumenting the driver, etc. to see what's going on. -Scott ^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2011-08-01 16:12 UTC | newest] Thread overview: 11+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2011-07-27 15:03 HELP:PowerPc-Linux kernel naresh.kamboju 2011-07-27 20:27 ` Scott Wood 2011-07-28 4:45 ` Vijay Nikam 2011-07-28 5:30 ` MJ embd 2011-07-28 6:27 ` Vijay Nikam 2011-07-30 12:21 ` naresh.kamboju 2011-07-30 12:28 ` Gary Thomas 2011-08-01 11:31 ` naresh.kamboju 2011-08-01 11:36 ` Gary Thomas 2011-08-01 12:29 ` naresh.kamboju 2011-08-01 16:12 ` Scott Wood
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