linaro-dev December 2011

linaro-dev@lists.linaro.org

139 participants
148 discussions

Booting linux-linaro-2.6.37 on Beagle Board

by Avik Sil

Hi, I tried booting linux-linaro-2.6.37 kernel on my beagle board C4. I executed following: 1. Installed linaro on a 4 GB SD card using linaro-image-tools 0.4.1 with hwpack daily snapshot hwpack_linaro-omap3_20110125-0_armel_supported.tar.gz and linaro-natty-headless-tar-20101202-1.tar.gz. It was booting properly on my BB. 2. Cloned linux-linaro-2.6.37. Changed to source directory 3. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- omap2plus_defconfig 4. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- menuconfig (enabled EARLY_PRINTK) 5. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- uImage 6. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules 7. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules_install INSTALL_MOD_PATH=/media/rootfs 8. cp arch/arm/boot/uImage /media/boot; sync Everything went on smoothly. Then I put the SD card on BB and powered it on. I got a kernel panic: http://paste.ubuntu.com/560562 Please help me figuring out the problem. Is it because I didn't create uInitrd? If so, then how to create it for ARM? Regards, Avik

10 years, 8 months

[PATCH v5 0/4] Device tree support for regulators

by Rajendra Nayak

v5 is based on 3.2-rc2 and has the following changes -1- Used microvolt/microamp in bindings instead of uV/uA -2- Added more documentation surrounding regulator-consumer mapping in the core bindings -3- Dropped CONFIG_OF_REGULATOR and use just CONFIG_OF -4- Reused core regulator bindings on Fixed regulator bindings -5- Corrected the gpio binding for Fixed regulator The patches can be found here: git://gitorious.org/omap-pm/linux.git for-dt/regulator For the first 2 patches (1/4 and 2/4) I have dropped Acks from Mark, since they have changed to some extent from the last post and retained the Acks recieved on the last 2 patches (3/4 and 4/4) as they remain unchanged. regards, Rajendra Rajendra Nayak (4): regulator: helper routine to extract regulator_init_data regulator: adapt fixed regulator driver to dt regulator: pass additional of_node to regulator_register() regulator: map consumer regulator based on device tree .../bindings/regulator/fixed-regulator.txt | 29 +++++++ .../devicetree/bindings/regulator/regulator.txt | 54 +++++++++++++ drivers/regulator/88pm8607.c | 2 +- drivers/regulator/Makefile | 1 + drivers/regulator/aat2870-regulator.c | 2 +- drivers/regulator/ab3100.c | 2 +- drivers/regulator/ab8500.c | 2 +- drivers/regulator/ad5398.c | 2 +- drivers/regulator/bq24022.c | 2 +- drivers/regulator/core.c | 82 ++++++++++++++++--- drivers/regulator/da903x.c | 2 +- drivers/regulator/db8500-prcmu.c | 2 +- drivers/regulator/dummy.c | 2 +- drivers/regulator/fixed.c | 62 +++++++++++++++- drivers/regulator/isl6271a-regulator.c | 2 +- drivers/regulator/lp3971.c | 2 +- drivers/regulator/lp3972.c | 2 +- drivers/regulator/max1586.c | 2 +- drivers/regulator/max8649.c | 2 +- drivers/regulator/max8660.c | 2 +- drivers/regulator/max8925-regulator.c | 2 +- drivers/regulator/max8952.c | 2 +- drivers/regulator/max8997.c | 2 +- drivers/regulator/max8998.c | 2 +- drivers/regulator/mc13783-regulator.c | 2 +- drivers/regulator/mc13892-regulator.c | 2 +- drivers/regulator/of_regulator.c | 81 +++++++++++++++++++ drivers/regulator/pcap-regulator.c | 2 +- drivers/regulator/pcf50633-regulator.c | 2 +- drivers/regulator/tps6105x-regulator.c | 3 +- drivers/regulator/tps65023-regulator.c | 2 +- drivers/regulator/tps6507x-regulator.c | 2 +- drivers/regulator/tps6524x-regulator.c | 2 +- drivers/regulator/tps6586x-regulator.c | 2 +- drivers/regulator/tps65910-regulator.c | 2 +- drivers/regulator/tps65912-regulator.c | 2 +- drivers/regulator/twl-regulator.c | 2 +- drivers/regulator/wm831x-dcdc.c | 8 +- drivers/regulator/wm831x-isink.c | 2 +- drivers/regulator/wm831x-ldo.c | 6 +- drivers/regulator/wm8350-regulator.c | 2 +- drivers/regulator/wm8400-regulator.c | 2 +- drivers/regulator/wm8994-regulator.c | 2 +- include/linux/regulator/driver.h | 4 +- include/linux/regulator/of_regulator.h | 20 +++++ sound/soc/codecs/sgtl5000.c | 2 +- 46 files changed, 362 insertions(+), 58 deletions(-) create mode 100644 Documentation/devicetree/bindings/regulator/fixed-regulator.txt create mode 100644 Documentation/devicetree/bindings/regulator/regulator.txt create mode 100644 drivers/regulator/of_regulator.c create mode 100644 include/linux/regulator/of_regulator.h

11 years, 4 months

Optimized kernel memcpy/memset

by Christian Robottom Reis

Hey there, I was asked today in the board meeting about the use of NEON routines in the kernel; I said we had looked into this but hadn't done it because a) it wasn't conclusively better and b) if better, it would need to be done conditionally per-platform. But I wanted to double-check that's actually true (and I'm copying Vijay to keep me honest). I have some references: http://lists.linaro.org/pipermail/linaro-toolchain/2011-January/000722.html http://groups.google.com/group/beagleboard/browse_thread/thread/12c7bd415fb… http://www.spinics.net/lists/arm-kernel/msg106503.html http://dev.gentoo.org/~armin76/arm/memcpy-neon_result.txt https://wiki.linaro.org/WorkingGroups/ToolChain/Benchmarks/InitialMemcpy?hi… https://wiki.linaro.org/WorkingGroups/ToolChain/StringRoutines?highlight=%2… Incidentally, this ties into the question sent earlier this week which had to do with Nico's work item in: https://blueprints.launchpad.net/linux-linaro/+spec/other-kernel-thumb2 Which IIRC Nico says probably isn't worth it, right? -- Christian Robottom Reis | [+55] 16 9112 6430 | http://launchpad.net/~kiko Linaro Engineering VP | [ +1] 612 216 4935 | http://async.com.br/~kiko

11 years, 4 months

[PATCH v3 0/4] OMAP serial device tree support

by Rajendra Nayak

v3 is rebased on top of the latest serial runtime patches[1] and boot tested with/without DT on OMAP4 SDP and OMAP4 Panda boards. Patches can be found here.. git://gitorious.org/omap-pm/linux.git for-dt/serial I also had to pull in a fix[2] for DT testing (already in linux-omap master) which was missing as the serial runtime branch[1] was based on an older master commit. Changes in v3: -1- Rebased on latest serial runtime patches -2- Minor typr fixes Changes in v2: -1- Got rid of binding to define which uart is console -2- Added checks to default clock speed to 48Mhz -3- Added compatible for each OMAP family -4- Used of_alias_get_id to populate port.line [1] git://gitorious.org/runtime_3-0/runtime_3-0.git for_3_3/lo_rc4_uartruntime [2] http://www.spinics.net/lists/arm-kernel/msg150751.html Rajendra Nayak (4): omap-serial: Get rid of all pdev->id usage omap-serial: Use default clock speed (48Mhz) if not specified omap-serial: Add minimal device tree support ARM: omap: pass minimal SoC/board data for UART from dt .../devicetree/bindings/serial/omap_serial.txt | 10 +++ arch/arm/boot/dts/omap3.dtsi | 31 ++++++++ arch/arm/boot/dts/omap4.dtsi | 28 +++++++ arch/arm/mach-omap2/board-generic.c | 1 - drivers/tty/serial/omap-serial.c | 80 +++++++++++++++---- 5 files changed, 132 insertions(+), 18 deletions(-) create mode 100644 Documentation/devicetree/bindings/serial/omap_serial.txt

11 years, 5 months

Building Linaro Android from source and replacing the kernel in an Linaro Android build

by Zach Pfeffer

I get these questions a lot so I wrote some blog posts with the exact steps I used. http://www.linaro.org/linaro-blog/2011/09/15/switching-out-a-pre-built-andr… http://www.linaro.org/linaro-blog/2011/09/15/%EF%BB%BFbuilding-a-linaro-and… Enjoy! -- Zach Pfeffer Android Platform Team Lead, Linaro Platform Teams Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

11 years, 5 months

[PATCH 0/3] Framebuffer related fixes for Exynos / Origen

by Tushar Behera

Following patchset is required to add framebuffer support on Origen. The patches are based on following commit on Kukjin's for-next branch. a188e1e "Merge branch 'next-samsung-devel' into for-next" Tushar Behera (3): ARM: EXYNOS: Increase DMA pool allocator size for framebuffer - Required to allocate the framebuffer successfully ARM: EXYNOS: Add clkdev lookup entry for lcd clock - Required for framebuffer operation ARM: EXYNOS: Invert VCLK polarity for framebuffer on Origen board - Required to remove glitch in LCD display arch/arm/mach-exynos/clock.c | 14 +++++++++----- arch/arm/mach-exynos/cpu.c | 7 +++++++ arch/arm/mach-exynos/mach-origen.c | 3 ++- 3 files changed, 18 insertions(+), 6 deletions(-) -- 1.7.4.1

11 years, 6 months

[PATCH] Makefile: Remove mmc_spl related enteries

by Chander Kashyap

As mmc_spl now follows spl infrastructure, removed unwanted enteries in Makefile for mmc_spl related compilation. Signed-off-by: Chander Kashyap <chander.kashyap(a)linaro.org> --- Makefile | 8 -------- 1 files changed, 0 insertions(+), 8 deletions(-) diff --git a/Makefile b/Makefile index 294c762..d349c1c 100644 --- a/Makefile +++ b/Makefile @@ -361,7 +361,6 @@ ALL-y += $(obj)u-boot.srec $(obj)u-boot.bin $(obj)System.map ALL-$(CONFIG_NAND_U_BOOT) += $(obj)u-boot-nand.bin ALL-$(CONFIG_ONENAND_U_BOOT) += $(obj)u-boot-onenand.bin ONENAND_BIN ?= $(obj)onenand_ipl/onenand-ipl-2k.bin -ALL-$(CONFIG_MMC_U_BOOT) += $(obj)mmc_spl/u-boot-mmc-spl.bin ALL-$(CONFIG_SPL) += $(obj)spl/u-boot-spl.bin ALL-$(CONFIG_OF_SEPARATE) += $(obj)u-boot.dtb $(obj)u-boot-dtb.bin @@ -481,11 +480,6 @@ onenand_ipl: $(TIMESTAMP_FILE) $(VERSION_FILE) $(obj)include/autoconf.mk $(obj)u-boot-onenand.bin: onenand_ipl $(obj)u-boot.bin cat $(ONENAND_BIN) $(obj)u-boot.bin > $(obj)u-boot-onenand.bin -mmc_spl: $(TIMESTAMP_FILE) $(VERSION_FILE) depend - $(MAKE) -C mmc_spl/board/$(BOARDDIR) all - -$(obj)mmc_spl/u-boot-mmc-spl.bin: mmc_spl - $(obj)spl/u-boot-spl.bin: depend $(MAKE) -C spl all @@ -768,7 +762,6 @@ clean: @rm -f $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s @rm -f $(obj)nand_spl/{u-boot.lds,u-boot-nand_spl.lds,u-boot-spl,u-boot-spl.map,System.map} @rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl.map} - @rm -f $(obj)mmc_spl/{u-boot.lds,u-boot-spl,u-boot-spl.map,u-boot-spl.bin,u-boot-mmc-spl.bin} @rm -f $(ONENAND_BIN) @rm -f $(obj)onenand_ipl/u-boot.lds @rm -f $(obj)spl/{u-boot-spl,u-boot-spl.bin,u-boot-spl.lds,u-boot-spl.map} @@ -797,7 +790,6 @@ clobber: clean @rm -fr $(obj)include/generated @[ ! -d $(obj)nand_spl ] || find $(obj)nand_spl -name "*" -type l -print | xargs rm -f @[ ! -d $(obj)onenand_ipl ] || find $(obj)onenand_ipl -name "*" -type l -print | xargs rm -f - @[ ! -d $(obj)mmc_spl ] || find $(obj)mmc_spl -name "*" -type l -print | xargs rm -f @rm -f $(obj)dts/*.tmp mrproper \ -- 1.7.5.4

11 years, 6 months

[PATCH] Regulator: Add Anatop regulator driver

by Ying-Chun Liu (PaulLiu)

From: "Ying-Chun Liu (PaulLiu)" <paul.liu(a)linaro.org> Hi all, This is the Anatop regulator used by Freescale i.MX6 SoC. Please take a look and give me some comments. Many Thanks, Paul Ying-Chun Liu (PaulLiu) (1): Regulator: Add Anatop regulator driver drivers/regulator/Kconfig | 7 + drivers/regulator/Makefile | 1 + drivers/regulator/anatop-regulator.c | 236 ++++++++++++++++++++++++++++ include/linux/regulator/anatop-regulator.h | 82 ++++++++++ 4 files changed, 326 insertions(+), 0 deletions(-) create mode 100644 drivers/regulator/anatop-regulator.c create mode 100644 include/linux/regulator/anatop-regulator.h -- 1.7.7.3

11 years, 6 months

gcc: Thumb interworking and weakly linked functions

by Aneesh V

Hi, I have an interesting observation that I thought might be interesting to the tool-chain team. I was trying to build u-boot in Thumb2 for OMAP4. Everything was fine until I added some patches recently. One of these patches introduced an API (let's say foo()) that has a weakly linked alias(let's say __foo()) and a strongly linked implementation(the real foo()) in an assembly file. Although I give -mthumb and -mthumb-interwork for all the files, apparently GCC generates ARM code for assembly files. In the final image foobar() calls foo() using a BL. Since foobar() is in Thumb and foo() in ARM, it ends up crashing. Looks like foobar() assumed foo() to be Thumb because __foo() is Thumb. Also I see that 'objdump -S' aborts when it tries to parse foo(). I could workaround this problem by having foo() also in a C file that in turn calls into the assembly file. I tried Linaro GCC 4.5.2 and Codesourcery Lite GCC 4.4.1. Both seem to have the issue. Isn't this an issue with GCC or am I missing something? -Aneesh

11 years, 7 months

trouble building linux-linaro-3.0-2011.08-0

by John Rigby

I'm having trouble building the Thumb2 kernel on, I actually believe this same code worked some time ago before a toolchain update. There are actually two problems described below. I get past the first with a config change but don't know how to fix the second one. Start with mx51_defconfig, it builds uImage fine: $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- mx51_defconfig $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- uImage Save the working .config to config1 $ cp .config config1 Edit .config and remove this line then run make oldconfig. $ CONFIG_THUMB2_KERNEL is not set $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- oldconfig Answer y to THUMB2_KERNEL and THUMB2_AVOID_R_ARM_THM_JUMP11 Save new Thumb2 enabled config to config2 Here is the diff: $ diff -u config1 config2 --- config1 2011-08-21 14:50:23.014654705 -0600 +++ config2 2011-08-21 14:51:13.164654727 -0600 @@ -339,9 +339,10 @@ CONFIG_PREEMPT_VOLUNTARY=y # CONFIG_PREEMPT is not set CONFIG_HZ=100 -# CONFIG_THUMB2_KERNEL is not set +CONFIG_THUMB2_KERNEL=y +CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11=y +CONFIG_ARM_ASM_UNIFIED=y CONFIG_AEABI=y -# CONFIG_OABI_COMPAT is not set # CONFIG_ARCH_SPARSEMEM_DEFAULT is not set # CONFIG_ARCH_SELECT_MEMORY_MODEL is not set CONFIG_HAVE_ARCH_PFN_VALID=y @@ -1417,7 +1418,6 @@ # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NOTIFIERS is not set # CONFIG_DEBUG_CREDENTIALS is not set -CONFIG_FRAME_POINTER=y # CONFIG_BOOT_PRINTK_DELAY is not set # CONFIG_RCU_TORTURE_TEST is not set # CONFIG_BACKTRACE_SELF_TEST is not set @@ -1429,7 +1429,6 @@ # CONFIG_SYSCTL_SYSCALL_CHECK 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_HAVE_C_RECORDMCOUNT=y Attempt to build this: $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- uImage ... LD init/built-in.o LD .tmp_vmlinux1 arch/arm/kernel/built-in.o: In function `get_wchan': early_printk.c:(.text+0x1400): undefined reference to `unwind_frame' arch/arm/kernel/built-in.o: In function `walk_stackframe': early_printk.c:(.text+0x2832): undefined reference to `unwind_frame' make: *** [.tmp_vmlinux1] Error 1 Poke around a bit and it looks like setting ARM_UNWIND could make difference so try that. Edit .config the remove # CONFIG_ARM_UNWIND is not set then run make old config again. $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- oldconfig Call the result config3 $ cp .config config3 So here is the cumulative diff $ diff -u config1 config3 --- config1 2011-08-21 14:50:23.014654705 -0600 +++ config3 2011-08-21 14:54:29.584654811 -0600 @@ -339,9 +339,10 @@ CONFIG_PREEMPT_VOLUNTARY=y # CONFIG_PREEMPT is not set CONFIG_HZ=100 -# CONFIG_THUMB2_KERNEL is not set +CONFIG_THUMB2_KERNEL=y +CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11=y +CONFIG_ARM_ASM_UNIFIED=y CONFIG_AEABI=y -# CONFIG_OABI_COMPAT is not set # CONFIG_ARCH_SPARSEMEM_DEFAULT is not set # CONFIG_ARCH_SELECT_MEMORY_MODEL is not set CONFIG_HAVE_ARCH_PFN_VALID=y @@ -1417,7 +1418,6 @@ # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NOTIFIERS is not set # CONFIG_DEBUG_CREDENTIALS is not set -CONFIG_FRAME_POINTER=y # CONFIG_BOOT_PRINTK_DELAY is not set # CONFIG_RCU_TORTURE_TEST is not set # CONFIG_BACKTRACE_SELF_TEST is not set @@ -1429,7 +1429,6 @@ # CONFIG_SYSCTL_SYSCALL_CHECK 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_HAVE_C_RECORDMCOUNT=y @@ -1443,7 +1442,7 @@ # CONFIG_KGDB is not set # CONFIG_TEST_KSTRTOX is not set # CONFIG_STRICT_DEVMEM is not set -# CONFIG_ARM_UNWIND is not set +CONFIG_ARM_UNWIND=y # CONFIG_DEBUG_USER is not set CONFIG_DEBUG_LL=y CONFIG_EARLY_PRINTK=y Try building again. $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- uImage ... LD vmlinux SYSMAP System.map SYSMAP .tmp_System.map OBJCOPY arch/arm/boot/Image Kernel: arch/arm/boot/Image is ready AS arch/arm/boot/compressed/head.o arch/arm/boot/compressed/head.S: Assembler messages: arch/arm/boot/compressed/head.S:127: Error: selected processor does not support requested special purpose register -- `mrs r2,cpsr' arch/arm/boot/compressed/head.S:134: Error: selected processor does not support requested special purpose register -- `mrs r2,cpsr' arch/arm/boot/compressed/head.S:136: Error: selected processor does not support requested special purpose register -- `msr cpsr_c,r2' make[2]: *** [arch/arm/boot/compressed/head.o] Error 1 make[1]: *** [arch/arm/boot/compressed/vmlinux] Error 2 make: *** [uImage] Error 2 Here is my gcc version: $ arm-linux-gnueabi-gcc --version arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.6.1-5ubuntu2~ppa1) 4.6.1 Copyright (C) 2011 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. And as version: GNU assembler (GNU Binutils for Ubuntu) 2.21.52.20110707 Copyright 2011 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or later. This program has absolutely no warranty. This assembler was configured for a target of `arm-linux-gnueabi'. Three configs attached: config1 -- original config from make mx51_defconfig config2 -- config after turning on thumb2 config3 -- config after setting ARM_UNWIND Any help would be appreciated. Thanks John

11 years, 7 months

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linaro-dev December 2011