linaro-dev January 2011

linaro-dev@lists.linaro.org

81 participants
84 discussions

by Ira Rosen

Hi, After working fine for a while, the board crashed during the weekend, and I am getting the following error: Texas Instruments X-Loader 1.4.4ss (Sep 30 2010 - 14:44:32) Beagle xM Rev A Reading boot sector not there u-boot.bin not found or blank nand contents - attempting serial boot . . . ## Ready for binary (kermit) download to 0x80008000 at 115200 bps.. The SD card was formatted and reinstalled: ./linaro-media-create --mmc /dev/mmcblk0 --dev beagle --binary image/linaro-m-headless-tar-*.tar.gz --hwpack ../hwpack_linaro-omap3_20101105-75_armel_supported.tar.gz but it didn't help. The card seems to be OK: root@idol-laptop:~# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda2 144183992 38735348 98124484 29% / none 1574348 372 1573976 1% /dev none 1578568 5204 1573364 1% /dev/shm none 1578568 120 1578448 1% /var/run none 1578568 0 1578568 0% /var/lock none 1578568 0 1578568 0% /lib/init/rw /dev/mmcblk0p2 3731768 360100 3182104 11% /media/rootfs /dev/mmcblk0p1 71133 8481 62653 12% /media/boot ls -l /media/boot/ total 8480 -rwxr-xr-x 1 idol idol 397 2010-11-21 11:39 boot.ini -rwxr-xr-x 1 idol idol 397 2010-11-21 11:39 boot.scr -rwxr-xr-x 1 idol idol 18360 2010-11-21 11:39 MLO -rwxr-xr-x 1 idol idol 192204 2010-11-21 11:39 u-boot.bin -rwxr-xr-x 1 idol idol 3704228 2010-11-21 11:39 uImage -rwxr-xr-x 1 idol idol 4766721 2010-11-21 11:39 uInitrd ls -l /media/rootfs/ total 784 drwxr-xr-x 2 root root 4096 2010-11-21 06:46 bin drwxr-xr-x 2 root root 4096 2010-11-21 11:36 boot drwxr-xr-x 4 root root 4096 2010-11-21 06:42 dev drwxr-xr-x 60 root root 4096 2010-11-21 11:41 etc drwxr-xr-x 2 root root 4096 2010-10-07 11:15 home lrwxrwxrwx 1 root root 39 2010-11-21 11:39 initrd.img -> boot/initrd.img-2.6.35-1006-linaro-omap drwxr-xr-x 10 root root 4096 2010-11-21 06:45 lib drwx------ 2 root root 16384 2010-11-21 11:36 lost+found -rw-r--r-- 1 root root 708215 2010-11-21 06:48 md5sum.txt drwxr-xr-x 2 root root 4096 2010-11-21 06:41 media drwxr-xr-x 2 root root 4096 2010-10-07 11:15 mnt drwxr-xr-x 2 root root 4096 2010-11-21 06:41 opt drwxr-xr-x 2 root root 4096 2010-10-07 11:15 proc drwx------ 2 root root 4096 2010-11-21 11:59 root drwxr-xr-x 2 root root 4096 2010-11-21 11:34 sbin drwxr-xr-x 2 root root 4096 2010-05-09 21:20 selinux drwxr-xr-x 2 root root 4096 2010-11-21 06:41 srv drwxr-xr-x 2 root root 4096 2010-09-25 00:05 sys drwxrwxrwt 2 root root 4096 2010-11-21 11:36 tmp drwxr-xr-x 10 root root 4096 2010-11-21 06:41 usr drwxr-xr-x 13 root root 4096 2010-11-21 06:38 var lrwxrwxrwx 1 root root 36 2010-11-21 11:41 vmlinuz -> boot/vmlinuz-2.6.35-1006-linaro-omap fdisk -l Disk /dev/mmcblk0: 3959 MB, 3959422976 bytes 255 heads, 63 sectors/track, 481 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00042b57 Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 1 9 72261 c W95 FAT32 (LBA) /dev/mmcblk0p2 10 481 3791340 83 Linux Any clue? Thanks, Ira

12 years, 10 months

[PATCH V2] ARM: SAMSUNG: Add support for clock debugging through debug-fs interface

by Amit Daniel Kachhap

This patch adds support for clock information exposed to debug-fs interface. Signed-off-by: Amit Daniel Kachhap <amit.daniel(a)samsung.com> --- Code modified for V2 version are, a)Inserted the debug-fs code inside macro CONFIG_PM_DEBUG as suggested by yong.shen(a)linaro.org. b)Removed macro CONFIG_PLAT_SAMSUNG and implemented other coding standards as suggested by kgene.kim(a)samsung.com arch/arm/plat-samsung/clock.c | 91 ++++++++++++++++++++++++++++ arch/arm/plat-samsung/include/plat/clock.h | 3 + 2 files changed, 94 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index e8d20b0..029a49d 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -39,6 +39,9 @@ #include <linux/clk.h> #include <linux/spinlock.h> #include <linux/io.h> +#if defined(CONFIG_DEBUG_FS) +#include <linux/debugfs.h> +#endif #include <mach/hardware.h> #include <asm/irq.h> @@ -447,3 +450,91 @@ int __init s3c24xx_register_baseclocks(unsigned long xtal) return 0; } +#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS) +/* debugfs support to trace clock tree hierarchy and attributes */ + +static struct dentry *clk_debugfs_root; + +static int clk_debugfs_register_one(struct clk *c) +{ + int err; + struct dentry *d, *child, *child_tmp; + struct clk *pa = c->parent; + char s[255]; + char *p = s; + + p += sprintf(p, "%s", c->name); + /*Append id field with name also*/ + if (c->id >= 0) + sprintf(p, ":%d", c->id); + + d = debugfs_create_dir(s, pa ? pa->dent : clk_debugfs_root); + if (!d) + return -ENOMEM; + + c->dent = d; + + d = debugfs_create_u8("usecount", S_IRUGO, c->dent, (u8 *)&c->usage); + if (!d) { + err = -ENOMEM; + goto err_out; + } + d = debugfs_create_u32("rate", S_IRUGO, c->dent, (u32 *)&c->rate); + if (!d) { + err = -ENOMEM; + goto err_out; + } + return 0; + +err_out: + d = c->dent; + list_for_each_entry_safe(child, child_tmp, &d->d_subdirs, d_u.d_child) + debugfs_remove(child); + debugfs_remove(c->dent); + return err; +} + +static int clk_debugfs_register(struct clk *c) +{ + int err; + struct clk *pa = c->parent; + + if (pa && !pa->dent) { + err = clk_debugfs_register(pa); + if (err) + return err; + } + + if (!c->dent) { + err = clk_debugfs_register_one(c); + if (err) + return err; + } + return 0; +} + +static int __init clk_debugfs_init(void) +{ + struct clk *c; + struct dentry *d; + int err; + + d = debugfs_create_dir("clock", NULL); + if (!d) + return -ENOMEM; + clk_debugfs_root = d; + + list_for_each_entry(c, &clocks, list) { + err = clk_debugfs_register(c); + if (err) + goto err_out; + } + return 0; +err_out: + debugfs_remove_recursive(clk_debugfs_root); + return err; +} +late_initcall(clk_debugfs_init); + +#endif /* defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS) */ + diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h index 0fbcd0e..9a82b88 100644 --- a/arch/arm/plat-samsung/include/plat/clock.h +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -47,6 +47,9 @@ struct clk { struct clk_ops *ops; int (*enable)(struct clk *, int enable); +#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS) + struct dentry *dent; /* For visible tree hierarchy */ +#endif }; /* other clocks which may be registered by board support */ -- 1.6.2.5

12 years, 10 months

The linaro-2.6.37 kernel branch now available

by Nicolas Pitre

As described in the Linaro kernel process available here: https://wiki.linaro.org/WorkingGroups/KernelConsolidation/KernelTree the 2.6.37 branch of the Linaro kernel is now open and available here: http://git.linaro.org/gitweb?p=kernel/linux-linaro-2.6.37.git;a=summary git://git.linaro.org/kernel/linux-linaro-2.6.37.git This is a stable core 2.6.37 kernel with the latest 2.6.38-ish ARM related patches merged in. More patches will be merged as we move ahead to the actual 2.6.38 release. Again, if you have patches that have gone into mainline, or are on their way for mainline inclusion, you can have them merged in the Linaro tree for early exposure to a wider audience, and packaging in the Linaro distribution. Nicolas

12 years, 10 months

Notes & Actions: Linaro User Platform Weekly Status Meeting 1/5

by Tom Gall

Greetings, Enclosed you'll find a link to the agenda, notes and actions from the Linaro User Platforms Weekly Status meeting dated January 5th held in #linaro-meeting on irc.freenode.net at 13:00 UTC. This will be the very last User Platform meeting as the new Multimedia and Graphical teams will take it's place. https://wiki.linaro.org/Platform/UserPlatforms/WeeklyStatus/2011-01-05 Regards, Tom (tgall_foo) User Platforms Team "We want great men who, when fortune frowns will not be discouraged." - Colonel Henry Knox w) tom.gall att linaro.org w) tom_gall att vnet.ibm.com h) tom_gall att mac.com

12 years, 10 months

agenda for multimedia working group for next week's sprint

by Sachin Gupta

Hi All, I have started putting agenda for sprint next week at location https://wiki.linaro.org/WorkingGroups/Middleware/Multimedia. Can you please add agenda items that you would like to address during next week's sprint. Thanks Sachin

12 years, 11 months

MM working group internal call

by Rajeev Kapoor

Hi , Notes and actions from our wednesday multimedia internal call are available on the wiki: + https://wiki.linaro.org/WorkingGroups/Middleware/Multimedia/Notes/2011-01-05 Please act fast on the actions identified for Wk02 Linaro sprint in Dallas. Also, please try to carry some board/setyup for the Linaro sprint event next week wk02. Thanks, Rajeev

12 years, 11 months

Re: discussion on handling dynamic update of clock information in powerdebug

by Amit Kucheria

CC'ing linaro-dev On Tue, Jan 4, 2011 at 1:18 PM, Yong Shen <yong.shen(a)linaro.org> wrote: > hi there, > > In last weekly meeting, we talked about the real time display of clock > information in powerdebug. What do you mean by real-time display? powerdebug will only refresh it's information every 'n' seconds. At that point, the 'show' function for the sysfs rate entry should call get_rate() for the clock. > Actually, this feature can be easily supported. if you found some > clocks' information stay unchanged after your drivers change clock > setting, it may be caused by the wrong way of clock information > exposing. > > In the last several weeks, Jeremy and I reviewed the clock debug code > based on common clock struct. In this code, I used below code to > expose clock information: > > > +static int clk_debug_rate_get(void *data, u64 *val) > +{ > + struct clk *clk = data; > + > + *val = (u64)clk_get_rate(clk); > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(clk_debug_rate_fops, clk_debug_rate_get, NULL, > + "%llu\n"); > + > ..... > + d = debugfs_create_file("rate", S_IRUGO, clk->dentry, (void *)clk, > + &clk_debug_rate_fops); > > Therefore, whenever the clock information is accessed, it can reflect > the truth, since it calls clk interface like clk_get_rate() to get the > right value. Why is it called clk_debug_rate_get()? Is there not a standard clk_rate_get() that we can use? > Previously, some of you might use a variable to store clock > information like rate or count, and expose these variable to sysfs, > which is why they are not updated when the real clock information is > changing. Right, storing in variables will give wrong results if you're in the middle of a rate refresh.

12 years, 11 months

Tegra 2 host

by Michael Hope

I've added a Tegra 250 based Toshiba AC100 Smartbook to my network. Let me know if you'd like access. -- Michael

12 years, 11 months

new linaro u-boot ready for uploading

by John Rigby

The following changes since commit a581cf741c49c220d159fac1fdbde28255c2e7e3: Merge branch 'linaro-stable' into linaro-packaged (2011-01-03 14:41:56 -0700) are available in the git repository at: git://git.linaro.org/boot/u-boot-linaro-stable.git packaged John Rigby (2): debian/rules: remove -Bsymbolic-functions from LDFLAGS u-boot-linaro-2010.12-0ubuntu1 debian/changelog | 17 ++++++++++++----- debian/rules | 4 ++++ 2 files changed, 16 insertions(+), 5 deletions(-)

12 years, 11 months

Linaro Office of CTO meeting minutes

by David Rusling

All, apologies, I should have posted the minutes for our first meeting before Christmas. Anyway, here are today's minutes: https://wiki.linaro.org/OfficeofCTO/2011-01-04 Dave David Rusling, CTO http://www.linaro.org Linaro Lockton House Clarendon Rd Cambridge CB2 8FH

12 years, 11 months

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linaro-dev January 2011