Re: switching from initrd to initramfs
> I was hoping to convert this working initrd to initramfs before I try > and create my own initrd, I'm still learning about this process. I got > this to work yesterday morning, but I'm not sure what changed or what > I'm doing differently... > Can somebody help me figure out what's missing? Never mind, got it! :) For reference, here is what I did: First I made a custom init file called "init_mz" with the following contents: #!/bin/sh echo "hello! processing init_mz" #Create all the symlinks to /bin/busybox echo "installing busybox links..." busybox --install -s echo "done installing busybox links..." #Mount things needed by this script echo "mounting proc..." mount -t proc proc /proc echo "done mounting proc..." echo "mounting sysfs..." mount -t sysfs sysfs /sys echo "done mounting sysfs..." #Create device nodes echo "creating /dev nodes..." mknod /dev/null c 1 3 mknod /dev/tty c 5 0 mdev -s echo "done creating /dev nodes..." echo "exec-ing sh..." exec /bin/sh At this point booting with the "rdinit=/init_mz" kernel argument worked. Then I removed pretty much everything unnecessary from my root tree, cross-compiled a busybox v1.14.2 with defconfg (except statically-linked), and created the few necessary links, so my tree looks like this: |-- bin | |-- busybox | |-- echo -> busybox | |-- mount -> busybox | `-- sh -> busybox |-- dev |-- init_mz |-- proc |-- sbin |-- sys `-- usr |-- bin `-- sbin ** I could probably also get rid of /dev /proc /sbin /sys /usr* /bin/echo and /bin/mount and just create those on the fly in the init_mz file. I'm building the initramfs ramdisk using: find | cpio -ovc | gzip -v9 > ../initramfs.cpio.gz mkimage -T ramdisk -C gzip -n 'Test Ramdisk Image' -d ../initramfs.cpio.gz ../uCpio For my kernel arguments I'm using "console=ttyCPM0,9600n8 root=/dev/ram rw rdinit=/init_mz" and that is all! I now have a functional initramfs that's 0.97MB large. For a while I was confused because "ls" output had file names with strange symbols such as "1;34mbin0m" for "bin", but I figured out that it's because supposedly those represent font colors and I'm using HyperTerminal which doesn't support them. I hope somebody will find this useful. Mikhail Zaturenskiy ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
switching from initrd to initramfs
er noop registered io scheduler deadline registered (default) Generic RTC Driver v1.07 fa80.serial: ttyCPM0 at MMIO 0xc500ea80 (irq = 19) is a CPM UART fa20.serial: ttyCPM1 at MMIO 0xc5016a20 (irq = 29) is a CPM UART brd: module loaded loop: module loaded eth0 (): not using net_device_ops yet eth0: fs_enet: 00:00:00:00:00:00 eth1 (): not using net_device_ops yet eth1: fs_enet: 00:00:00:00:00:00 FEC MII Bus: probed fe00.flash: Found 2 x16 devices at 0x0 in 32-bit bank Amd/Fujitsu Extended Query Table at 0x0040 fe00.flash: CFI does not contain boot bank location. Assuming top. number of CFI chips: 1 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. TCP cubic registered NET: Registered protocol family 17 RPC: Registered udp transport module. RPC: Registered tcp transport module. List of all partitions: 1f00 32768 mtdblock0 (driver?) No filesystem could mount root, tried: ext2 cramfs Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) Rebooting in 180 seconds.. ** I was hoping to convert this working initrd to initramfs before I try and create my own initrd, I'm still learning about this process. I got this to work yesterday morning, but I'm not sure what changed or what I'm doing differently... Can somebody help me figure out what's missing? Thanks, Mikhail Zaturenskiy ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
On Mon, Jul 6, 2009 at 3:18 PM, Scott Wood wrote: > Try omitting the spaces around the equal sign. AHA! Lesson learned :) thanks Scott! That did it. ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
>> After doing this testing I have a side question: >> If I modify just arch/powerpc/configs/ep88x_defconfig, not all changes >> are reflected in the resulting .config when i do "make >> ep88x_defconfig; make uImage". I ended up having to modify >> arch/powerpc/Kconfig, arch/powerpc/configs/ep88xc_defconfig, >> fs/ext2/Kconfig and init/Kconfig to get "make ep88x_defconfig; make >> uImage" to create a properly configured image, but this really doesn't >> feel right. What's the proper way to set up a defconfig? > > What changes are you trying to make to the config, and what did you change > in the Kconfig files? > in arch/powerpc/Kconfig: + config BLK_DEV_LOOP + tristate + default y + config BLK_DEV_RAM + tristate + default y + config BLK_DEV_RAM_COUNT + int + default 16 + config BLK_DEV_RAM_SIZE + int + default 32768 in arch/powerpc/configs/ep88xc_defconfig: + CONFIG_BLK_DEV = y - CONFIG_BLK_DEV is not set - CONFIG_BLK_DEV_INITRD is not set - CONFIG_EXT2_FS is not set in fs/ext2/Kconfig/"config EXT2_FS": + default y in init/Kconfig/"config BLK_DEV_INITRD": + default y If I make changes just to arch/powerpc/configs/ep88xc_defconfig they don't seem to be propagated to the resulting configuration when using "make ep88xc_defconfig" ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
> If you have time, could you bisect to see when the slowdown was introduced? > > -Scott > Scott, I tested with kernels 2.6.28, 2.6.29 and 2.6.30 all obtained from git.kernel.org and configured the same. So, on my EP88xc board 2.6.28 and 2.6.29 work ok, 2.6.30 has the slowdown issue after loading a ramdisk. After doing this testing I have a side question: If I modify just arch/powerpc/configs/ep88x_defconfig, not all changes are reflected in the resulting .config when i do "make ep88x_defconfig; make uImage". I ended up having to modify arch/powerpc/Kconfig, arch/powerpc/configs/ep88xc_defconfig, fs/ext2/Kconfig and init/Kconfig to get "make ep88x_defconfig; make uImage" to create a properly configured image, but this really doesn't feel right. What's the proper way to set up a defconfig? Thanks, Mikhail Zaturenskiy ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
>> Frank! That worked like a charm! I downloaded linux-2.6.26 source from >> git.kernel.org, inserted the config options previously mentioned, >> compiled ok, keeping U-Boot ramdisk and my DTS same it booted right up >> and no more "slow motion" issue. > > If you have time, could you bisect to see when the slowdown was introduced? I'm leaving in 5 minutes, but I'll try to find some time next week to check this out. Mikhail ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
> This is very interesting. I recently experienced a similar problem when > upgrading from 2.6.26-rc6 to 2.6.31-rc1 (torvalds mainline kernel). > > I didn't had the time to figure out what was happening, so I went back to > 2.6.26-rc6. Just for the test, could you try to go back to 2.6.26 and see if > the problem remains? Frank! That worked like a charm! I downloaded linux-2.6.26 source from git.kernel.org, inserted the config options previously mentioned, compiled ok, keeping U-Boot ramdisk and my DTS same it booted right up and no more "slow motion" issue. Thanks! Now I just need to make myself a custom ramdisk. ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
> Here is what's happening: > * > RAMDISK: gzip image found at block 0 > VFS: Mounted root (ext2 filesystem) on device 1:0. > Freeing unused kernel memory: 112k init > > <4 minutes pass> > > init started: BusyBox v1.7.1 (2008-04-02 09:14:47 MEST) > > <2 minutes pass> > > starting pid 403, tty '': '/etc/rc.sh' > > < etc... > > * went out to lunch for 20 minutes, new output on screen: * Freeing unused kernel memory: 112k init init started: BusyBox v1.7.1 (2008-04-02 09:14:47 MEST) starting pid 403, tty '': '/etc/rc.sh' starting pid 408, tty '': '/bin/application' starting pid 409, tty '': '/bin/sh' ### Application running ... process '/bin/application' (pid 408) exited. Scheduling it for restart. starting pid 411, tty '': '/bin/application * ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
> Just as an intermediate update on the issue, I've made progress and it > hangs later down the line, see below: > > Using Embedded Planet EP88xC machine description > Linux version 2.6.30-rc2-01402-gd4e2f68-dirty (dev...@localhost.localdomain) > (gc > c version 4.2.2) #3 Thu Jul 2 11:00:54 CDT 2009 > Found initrd at 0xc3dbb000:0xc3f6d056 > Zone PFN ranges: > DMA 0x -> 0x4000 > Normal 0x4000 -> 0x4000 > Movable zone start PFN for each node > early_node_map[1] active PFN ranges > 0: 0x -> 0x4000 > MMU: Allocated 72 bytes of context maps for 16 contexts > Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256 > Kernel command line: console=ttyCPM0,9600n8 root=/dev/ram loglevel=7 > init=/sbin/ > init > NR_IRQS:512 > PID hash table entries: 256 (order: 8, 1024 bytes) > Decrementer Frequency = 0x5f5e10 > clocksource: timebase mult[2800] shift[22] registered > console [ttyCPM0] enabled > Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) > Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) > Memory: 60716k/65536k available (2136k kernel code, 4752k reserved, 100k > data, 9 > 9k bss, 112k init) > SLUB: Genslabs=12, HWalign=16, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > Calibrating delay loop... 12.39 BogoMIPS (lpj=61952) > Mount-cache hash table entries: 512 > net_namespace: 296 bytes > NET: Registered protocol family 16 > bio: create slab at 0 > NET: Registered protocol family 2 > IP route cache hash table entries: 1024 (order: 0, 4096 bytes) > TCP established hash table entries: 2048 (order: 2, 16384 bytes) > TCP bind hash table entries: 2048 (order: 1, 8192 bytes) > TCP: Hash tables configured (established 2048 bind 2048) > TCP reno registered > NET: Registered protocol family 1 > checking if image is initramfs... > rootfs image is not initramfs (no cpio magic); looks like an initrd > Freeing initrd memory: 1736k freed > msgmni has been set to 122 > io scheduler noop registered > io scheduler deadline registered (default) > Generic RTC Driver v1.07 > fa80.serial: ttyCPM0 at MMIO 0xc500ea80 (irq = 19) is a CPM UART > fa20.serial: ttyCPM1 at MMIO 0xc5016a20 (irq = 29) is a CPM UART > brd: module loaded > loop: module loaded > eth0: fs_enet: 00:00:00:00:00:00 > eth1: fs_enet: 00:00:00:00:00:00 > FEC MII Bus: probed > fe00.flash: Found 2 x16 devices at 0x0 in 32-bit bank > Amd/Fujitsu Extended Query Table at 0x0040 > fe00.flash: CFI does not contain boot bank location. Assuming top. > number of CFI chips: 1 > cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. > TCP cubic registered > NET: Registered protocol family 17 > RPC: Registered udp transport module. > RPC: Registered tcp transport module. > RAMDISK: gzip image found at block 0 > VFS: Mounted root (ext2 filesystem) readonly on device 1:0. > Freeing unused kernel memory: 112k init > > > Now searching for cause, looks like it's "init" related... > Wow... I just found out that it's not actually "hanging" at this point.. it's just working in "slow motion"... I found out by leaving the machine and coming back half an hour later to find additional output and eventually even a prompt. Here is what's happening: * RAMDISK: gzip image found at block 0 VFS: Mounted root (ext2 filesystem) on device 1:0. Freeing unused kernel memory: 112k init <4 minutes pass> init started: BusyBox v1.7.1 (2008-04-02 09:14:47 MEST) <2 minutes pass> starting pid 403, tty '': '/etc/rc.sh' < etc... > * I've tried a couple different ramdisk images (another one with a much older version of busybox), with similar results. Anybody have an idea about what's going on here? ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
>> I haven't tried CONFIG_BLK_DEV or CONFIG_BLK_DEV_LOOP and am still >> playing around with the values for CONFIG_BLK_DEV_RAM_COUNT and >> CONFIG_BLK_DEV_RAM_SIZE. Strangely, the DEV_RAM defines are completely >> missing from my config so I have to put them in manually... (as >> opposed to via menuconfig). I'll post back when it's working or when >> I've tried all of this and still am getting some error. > > If you don't have CONFIG_BLK_DEV defined, you can't have > CONFIG_BLK_DEV_RAM_COUNT > or CONFIG_BLK_DEV_RAM_SIZE. Use 'menuconfig' to help straighten this out. > >> Meanwhile a side question - why does BLK_DEV_RAM_COUNT default to 16? > > This is just the number of unique RAM disk devices supported. I see, thanks Gary, I'll leave that unmodified then. I only really need 1 but it doesn't seem to negatively affect anything if I leave it at 16. Just as an intermediate update on the issue, I've made progress and it hangs later down the line, see below: Using Embedded Planet EP88xC machine description Linux version 2.6.30-rc2-01402-gd4e2f68-dirty (dev...@localhost.localdomain) (gc c version 4.2.2) #3 Thu Jul 2 11:00:54 CDT 2009 Found initrd at 0xc3dbb000:0xc3f6d056 Zone PFN ranges: DMA 0x -> 0x4000 Normal 0x4000 -> 0x4000 Movable zone start PFN for each node early_node_map[1] active PFN ranges 0: 0x -> 0x4000 MMU: Allocated 72 bytes of context maps for 16 contexts Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256 Kernel command line: console=ttyCPM0,9600n8 root=/dev/ram loglevel=7 init=/sbin/ init NR_IRQS:512 PID hash table entries: 256 (order: 8, 1024 bytes) Decrementer Frequency = 0x5f5e10 clocksource: timebase mult[2800] shift[22] registered console [ttyCPM0] enabled Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) Memory: 60716k/65536k available (2136k kernel code, 4752k reserved, 100k data, 9 9k bss, 112k init) SLUB: Genslabs=12, HWalign=16, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 Calibrating delay loop... 12.39 BogoMIPS (lpj=61952) Mount-cache hash table entries: 512 net_namespace: 296 bytes NET: Registered protocol family 16 bio: create slab at 0 NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 2048 (order: 2, 16384 bytes) TCP bind hash table entries: 2048 (order: 1, 8192 bytes) TCP: Hash tables configured (established 2048 bind 2048) TCP reno registered NET: Registered protocol family 1 checking if image is initramfs... rootfs image is not initramfs (no cpio magic); looks like an initrd Freeing initrd memory: 1736k freed msgmni has been set to 122 io scheduler noop registered io scheduler deadline registered (default) Generic RTC Driver v1.07 fa80.serial: ttyCPM0 at MMIO 0xc500ea80 (irq = 19) is a CPM UART fa20.serial: ttyCPM1 at MMIO 0xc5016a20 (irq = 29) is a CPM UART brd: module loaded loop: module loaded eth0: fs_enet: 00:00:00:00:00:00 eth1: fs_enet: 00:00:00:00:00:00 FEC MII Bus: probed fe00.flash: Found 2 x16 devices at 0x0 in 32-bit bank Amd/Fujitsu Extended Query Table at 0x0040 fe00.flash: CFI does not contain boot bank location. Assuming top. number of CFI chips: 1 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. TCP cubic registered NET: Registered protocol family 17 RPC: Registered udp transport module. RPC: Registered tcp transport module. RAMDISK: gzip image found at block 0 VFS: Mounted root (ext2 filesystem) readonly on device 1:0. Freeing unused kernel memory: 112k init Now searching for cause, looks like it's "init" related... ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
On Thu, Jul 2, 2009 at 2:10 AM, Frank Svendsbøe wrote: > On Wed, Jul 1, 2009 at 10:14 PM, Mikhail > Zaturenskiy wrote: > Hmm... according to "Kernel command line: console=ttyCPM0,9600n8 > loglevel=7" you haven't > specified where root is. Add root=/dev/ram to the kernel command line, > and specify where the > init process is located (for instance init=/sbin/init). > > I haven't tried Denks ramdisk image. You can create one for yourself > using dd, gzip and U-Boots > mkimage tool. If the ramdisk image is larger than 4MB, you must either > change the default > CONFIG_BLK_DEV_RAM_SIZE=4096, or set ramdisk size in the kernel command line. > > Btw, I use an older kernel than you use, but I have these defined: > CONFIG_BLK_DEV=y > CONFIG_BLK_DEV_LOOP=y > CONFIG_BLK_DEV_RAM=y > CONFIG_BLK_DEV_RAM_COUNT=16 > CONFIG_BLK_DEV_RAM_SIZE=4096 > > Maybe they're obsolete now, but you can try to add them to your defconfig > file. > > Good luck ;-) > Thanks Frank, this seems to be leading me down the right path. I tried some of those defines out yesterday and they got the kernel to at least attempt to load the ramdisk, so I'm getting somewhere. Also added root=/dev/ram (also tried /dev/ram0) and init=/sbin/init but for now things are failing before processing those args. I haven't tried CONFIG_BLK_DEV or CONFIG_BLK_DEV_LOOP and am still playing around with the values for CONFIG_BLK_DEV_RAM_COUNT and CONFIG_BLK_DEV_RAM_SIZE. Strangely, the DEV_RAM defines are completely missing from my config so I have to put them in manually... (as opposed to via menuconfig). I'll post back when it's working or when I've tried all of this and still am getting some error. Meanwhile a side question - why does BLK_DEV_RAM_COUNT default to 16? ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: RAMDISK on EP88xc
> Hi Mikhail, > Try setting CONFIG_EXT2_FS=y, then recompile your kernel and reboot. Hi Frank, just tried that but still getting the same "Unpacking initramfs... failed!" output ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
RAMDISK on EP88xc
NFIG_DEBUG_BLOCK_EXT_DEVT is not set # CONFIG_FAULT_INJECTION is not set # CONFIG_LATENCYTOP is not set # CONFIG_DEBUG_PAGEALLOC is not set CONFIG_HAVE_FUNCTION_TRACER=y CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_TRACING_SUPPORT=y # # Tracers # # CONFIG_FUNCTION_TRACER is not set # CONFIG_SCHED_TRACER is not set # CONFIG_CONTEXT_SWITCH_TRACER is not set # CONFIG_EVENT_TRACER is not set # CONFIG_BOOT_TRACER is not set # CONFIG_TRACE_BRANCH_PROFILING is not set # CONFIG_STACK_TRACER is not set # CONFIG_KMEMTRACE is not set # CONFIG_WORKQUEUE_TRACER is not set # CONFIG_BLK_DEV_IO_TRACE is not set # CONFIG_SAMPLES is not set CONFIG_HAVE_ARCH_KGDB=y # CONFIG_KGDB is not set CONFIG_PRINT_STACK_DEPTH=64 # CONFIG_DEBUG_STACKOVERFLOW is not set # CONFIG_DEBUG_STACK_USAGE is not set # CONFIG_CODE_PATCHING_SELFTEST is not set # CONFIG_FTR_FIXUP_SELFTEST is not set # CONFIG_MSI_BITMAP_SELFTEST is not set # CONFIG_XMON is not set # CONFIG_IRQSTACKS is not set # CONFIG_BDI_SWITCH is not set # CONFIG_PPC_EARLY_DEBUG is not set # # Security options # # CONFIG_KEYS is not set # CONFIG_SECURITY is not set # CONFIG_SECURITYFS is not set # CONFIG_SECURITY_FILE_CAPABILITIES is not set # CONFIG_CRYPTO is not set CONFIG_PPC_CLOCK=y CONFIG_PPC_LIB_RHEAP=y # CONFIG_VIRTUALIZATION is not set ** Thanks, Mikhail Zaturenskiy ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: Trouble "Transferring control to Linux (at address 00000000)"
>> As for my device tree, I reverted back to the original version with >> nothing filled in and just replaced 0xfa20 with 0xf000 as Gary >> suggested earlier. > >Would it be a problem to also dynamically fixup IMMR in the device tree >from U-Boot? > >Cheers > Detlev Hi Detlev, it would be nice but how do I do this? ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: Trouble "Transferring control to Linux (at address 00000000)"
> Check the clock-frequency of the CPM BRG node. If u-boot isn't setting the > memory, it's probably not setting this either. I set the CPM BRG "clock-frequency = <153609>" (value obtained from u-boot's 'brginfo' command), set my CPU "clock-frequency = <1>" (down from 13000) to match what u-boot is using, and used the "console=ttyCPM0,9600n8" boot arg and I've finally got console output! Thanks everyone! I'll still try to figure out how to get u-boot to fill all this in. ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: Trouble "Transferring control to Linux (at address 00000000)"
> I'll still try to figure out how to get u-boot to fill all this in.
Got it... thanks to
"http://www.mail-archive.com/u-boot-us...@lists.sourceforge.net/msg05111.html";
I made sure that CONFIG_OF_LIBFDT and CONFIG_OF_BOARD_SETUP were both
present in "u-boot-2009.03/include/configs/EP88x.h". Then added the
following to the very end of "u-boot-2009.03/board/ep88x/ep88x.c":
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
}
#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
I suppose I could have put this code in w/o the "#if defined..." and
forget about the "CONFIG_OF_BOARD_SETUP" flag since I'm not really
using the "fdt boardsetup" command, but whatever.
As for my device tree, I reverted back to the original version with
nothing filled in and just replaced 0xfa20 with 0xf000 as Gary
suggested earlier.
Once again, thanks to all those who offered suggestions!
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Re: Trouble "Transferring control to Linux (at address 00000000)"
> Change "root=" to "console=". Thank you for clarifying. I tried this but I get the following in my memory dump: <6>Using Embedded Planet EP88xC ??achine description? <5>Linux ver??ion 2.6.30-rc2-01402-gd4e2f68-d??rty (dev...@localhost.localdoma??n) (gcc version 4.2.2) #1 Mon J??n 29 11:35:28 CDT 2009? <7>Top o?? RAM: 0x400' Total RAM: 0x4??0? <7>Memory hole size: 0MB??? >4>Zone PFN ranges:? <4> DMA?? 0x -> 0x4000? <4> ??ormal 0x4000 -> 0x400??? <4>Movable zone start PFN for ??ach node? <4>early_node_map[1] a??tive PFN ranges? <4>0: 0x000?? -> 0x4000? <7>On node 0??totalpages: 16384? <7>free_area_??nit_node: node 0' pgdat c021bf7??' node_mem_map c023f000? <7> DM?? zone: 128 pages used for memma??? <7> DMA zone: 0 pages reserve??? <7> DMA zone: 16256 pages' LI??O batch:3? <6>MMU: Allocated 72 ??ytes of context maps for 16 con??exts? <4>Built 1 zonelists in Zo??e order' mobility grouping on. ??Total pages: 16256? <5>Kernel co??mand line: console=ttyCPM0'9600??8 loglevel=7? <6>NR_IRQS:512? <7>??rq: irq 5 on host /s...@f000??interrupt-controller@0 mapped t?? virtual irq 16? <7>irq: irq 0 o?? host /s...@f000/c...@9c0/int??rrupt-control...@930 mapped to ??irtual irq 17? <4>PID hash table??entries: 256 (order: 8' 1024 by??es)? <4>Decrementer Frequency = ??x7bfa48? <7>irq: irq 15 on host ??...@f000/interrupt-controll...@0 mapped to virtual irq 18? <7??time_init: decrementer frequenc?? = 8.125000 MHz? <7>time_init: p??ocessor frequency = 130.0?? MHz? <6>clocksource: timebase m??lt[1ec4ec4f] shift[22] register??d? <7>clockevent: decrementer mu??t[214] shift[16] cpu[0]? <7>irq:??irq 4 on host /s...@f000/cpm??9c0/interrupt-control...@930 ma??ped to virtual irq 19? <6>consol?? [ttyCPM0] enabled Seems like at that point it begins to redirect output to ttyCPM0 but still nothing showing on the console... ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: Trouble "Transferring control to Linux (at address 00000000)"
Hi Scott,
> s/root=/console=/
I'm not quite sure what you mean by this.
> Alternatively, you can set /chosen/linux,stdout-path to poin to the serial
> node you want to use for the console.
If you look at the bottom of ep88xc.dts that I attached with my
previous post, I added the following:
chosen {
linux,stdout-path = "/s...@f000/c...@9c0/ser...@a80"; // MZ
-
added this 'chosen' section
};
However it did not seem to help, unless I did this wrong... still no
console output.
Thanks,
Mikhail
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Re: Trouble "Transferring control to Linux (at address 00000000)"
Hi Gary > Did you try 'root=ttyCPM0,9600'? Gave that a shot just now, doesn't seem to have changed anything other than that it now says "VFS: Cannot open root device ttyCMP0,9600" or unknown-block(2,0)." But thanks for the suggestion though. What exactly was this supposed to do? I thought that the "root=" boot argument did not play a role in console output of the boot information. ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: Trouble "Transferring control to Linux (at address 00000000)"
he hash table entries: 8192 (order: 3' 32768??bytes)? <6>Inode-cache hash table entries: 4096 (order: 2' 16384 bytes)? <6>Memor??: 62532k/65536k available (2064k kernel code' 2940k reserved' 100k data' 99k bs??' 96k init)? <6>SLUB: Genslabs=12' HWalign=16' Order=0-3' MinObjects=0' CPUs=1' ??odes=1? <6>Calibrating delay loop... 16.12 BogoMIPS (lpj=80640)? <4>Mount-cache h??sh table entries: 512? <6>net_namespace: 296 bytes? <6>NET: Registered protocol f??mily 16? <4>bio: create slab at 0? <7>Switched to high resolution mode on??CPU 0? <6>NET: Registered protocol family 2? <6>IP route cache hash table entries?? 1024 (order: 0' 4096 bytes)? <6>TCP established hash table entries: 2048 (order?? 2' 16384 bytes)? <6>TCP bind hash table entries: 2048 (order: 1' 8192 bytes)? <6??TCP: Hash tables configured (established 2048 bind 2048)? <6>TCP reno registered?? <6>NET: Registered protocol family 1? <6>msgmni has been set to 122? <6>io schedu??er noop registered? <6>io scheduler deadline registered (default)? <6>Generic RTC??Driver v1.07? <7>irq: irq 4 on host /s...@f000/c...@9c0/interrupt-control...@9??0 mapped to virtual irq 19? <6>fa80.serial: ttyCPM0 at MMIO 0xc500ea80 (irq ?? 19) is a CPM UART? <7>irq: irq 29 on host /s...@f000/c...@9c0/interrupt-contr??l...@930 mapped to virtual irq 29? <6>fa20.serial: ttyCPM1 at MMIO 0xc501aa2?? (irq = 29) is a CPM UART? <7>irq: irq 3 on host /s...@f000/interrupt-control?...@0 mapped to virtual irq 20? <6>eth0: fs_enet: 00:00:00:00:00:00? <7>irq: irq 7??on host /s...@f000/interrupt-control...@0 mapped to virtual irq 21? <6>eth1: ??s_enet: 00:00:00:00:00:00? <6>FEC MII Bus: probed? <6>fe00.flash: Found 2 x16??devices at 0x0 in 32-bit bank? <4> Amd/Fujitsu Extended Query Table at 0x0040? <4??fe00.flash: CFI does not contain boot bank location. Assuming top.? <5>numbe?? of CFI chips: 1? <5>cfi_cmdset_0002: Disabling erase-suspend-program due to cod?? brokenness.? <6>TCP cubic registered? <6>NET: Registered protocol family 17? <6>R??C: Registered udp transport module.? <6>RPC: Registered tcp transport module.? <3??Root-NFS: No NFS server available' giving up.? <3>VFS: Unable to mount root fs v??a NFS' trying floppy.? <4>VFS: Cannot open root device "" or unknown-block??2'0)? <4>Please append a correct "root=" boot option; here are the available par??itions:? <4>1f00 32768 mtdblock0 driver: of-flash? <0>Kernel panic - no?? syncing: VFS: Unable to mount root fs on unknown-block(2'0)? <4>Call Trace:? <4>??c381fed0] [c00069e0] show_stack+0x44/0x16c (unreliable)? <4>[c381ff10] [c001bc6c?? panic+0x8c/0x168? <4>[c381ff60] [c01ecb80] mount_block_root+0x12c/0x244? <4>[c38??ffb0] [c01ecdf4] prepare_namespace+0x4c/0x1c4? <4>[c381ffd0] [c01ec1b0] kernel_i??it+0xd0/0xfc? <4>[c381fff0] [c000da60] kernel_thread+0x4c/0x68? <0>Rebooting in 1??0 seconds..? At this point, my primary goal is to get console output working before I do anything else. I've tried different "console=x" boot arguments and I've added the "chosen" section to my DTS, but still no output. Anyone have suggestions about this? Is something else messed up in my DTS? Thanks, Mikhail Zaturenskiy ep88xc.dts Description: Binary data EP88x.h Description: Binary data ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: Trouble "Transferring control to Linux (at address 00000000)"
Hi Scott, > This isn't the denx list; I've noticed :) but I'm still learning about this whole process so I though I could get some general suggestions. > what kernel version is that, and with what > modifications from mainline? Kernel is v2.6.30, I'm not yet familiar enough with it to know what's been modified from mainline, just following instructions. > Note that ep88xc.dts in mainline is intended for use with PlanetCore, which > is what ships on that board. You may need to make modifications for it to > work with u-boot (at the least, the IMMR base is probably different). Hmm, this hasn't occurred to me, thank you for pointing it out. > Also, make sure u-boot is properly updating the memory size in the device > tree. Can you dump the post-fixup device tree in u-boot? Not sure, but I'll try to find out if that's possible. It'd certainly answer a lot of questions... Thanks, Mikhail Zaturenskiy ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Trouble "Transferring control to Linux (at address 00000000)"
post-mortem analysis (http://www.denx.de/wiki/view/DULG/LinuxPostMortemAnalysis) and came up with the following message: <6>Using Embedded Planet EP88xC machine description. <0>Kernel panic - not syncing: Error: Failed to allocate 0x1 0x80.. <0>. <4>Call Trace:. <4>69e0] show_stack...21f00] [c001bcb4] panic+0x8c/0x1 [c01fac70] lmb_alloc+0x0/0xc. <4>[c0221f70] [c01_page+0x60/0x74. <4>[c0221f80] [c01a4484] pte_alloc_one_kernel+0x I'm not quite sure where to go from here to get linux working. Anybody have any suggestions? Thank you, Mikhail Zaturenskiy ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
