• Random behavior with SCTLR_EL1 reset values

    armdev
    armdev

    Hi,

    I am working on Juno and I am using SCTLR_EL1 reset value based on A53 spec is = 0x00C50838

    but If I look to ARMv8 spec it shows some reserved bits as 1 and considering that reset values = 0x30D50800.

    I am seeing some MMU random behavior at EL1 based…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Juno MMU setup

    armdev
    armdev

    Hi,

    I was trying to change my MMU setup from 39bit address space to 40bit address space in Juno.

    Previously I was successfully able to map 39bit address space by setting T0SZ=25 and using L1 level page tables.

    Now I am trying to enable MMU configuring…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Compiling Xen for Juno

    armdev
    armdev

    Hi,

    I am trying to run Xen on Juno r0 board and while compiling the Xen code getting following error -

    make xen XEN_ARCH_TARGET=arm64 debug=y CONFIG_EARLY_PRINTK=juno

    make -C xen install

    make[1]: Entering directory `/home/nishaj/Xen/xen/xen'

    make -f Rules…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Juno linux bootup hang during init_IRQ

    armdev
    armdev

    Hi,

    I am bringing up linux kernel on Juno and I needed customized kernel so I have disabled most of the peripherals and customized my juno device tree.

    I am facing an issue where my kernel is hanging while start_kernel during init_IRQ. I am setting following…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Downloading linux kernel sources for Juno

    armdev
    armdev

    Hi,

    I want to build linux kernel with minimal features from sources and simple file system to run on Juno.

    Please let me know from where I can download linux kernel sources and simple root file system ?

    I tried building Linaro kernel base for Juno and facing…

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Issue with exception handler

    armdev
    armdev

    Hi,

    I am facing an issue where I am setting timer at Guest EL1 (NS) mode and trying to route this interrupt to EL2.

    I do see that when timer expires the interrupt is pending (using generic timer PPI 30) in GICD_ISPENDR (bit 30 set) but control reaches to…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • DS5 connection issue with linux on Juno

    armdev
    armdev

    Hi,

    I am running the Juno binaries and after linux boots up trying to connect to Juno.

    I am getting below error. How to resolve it ?

    I am selecting "Linux Kernel and/or Device Driver Debug" ---> "Debug Cortex-A53x4 SMP via DSTREAM/RVI" connection.…

    • Answered
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    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Juno linux kernel

    armdev
    armdev

    Hi

    I am trying to boot Juno linux kernel and using my boot sequence.

    I am facing issue with Juno linux code where it is mapping some fixed map which i guess is due to UEFI requirement.

    Is there any way I can disable it in Juno linux kernel ? or is there…

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Issue FIQ pending arm trusted firmware

    armdev
    armdev

    Hi,

    I am running arm-trusted-firmware on Juno and when I breakthrough DS-5 on EL3 level I see FIQ pending status in ISR_EL1.

    I am trying to bring-up linux guest OS and when I try to run linux image I am entering virtual FIQ handler at EL2 level.

    Please let…

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Issue with eret

    armdev
    armdev

    Hi,

    I am doing "eret" from EL2h mode and expecting that I should jump to EL1h mode but rather it is taking me to EL0t mode.

    I am trying to root cause the issue but not able to figure out. Any pointers will be helpful ?

    Thanks

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • run kexec on Juno board

    Liu Song
    Liu Song

    Hi all,

    Is anyone had run kexec on Juno board successfully? I tried, but can't jump to the second kernel. From DS-5, I found the pc register point to addr 0x00000xxxxx,

    which means failed in kexec-tools. The tools I get from "git://git.kernel.org…

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • accuracy of periodic interrupt from generic timer

    mike
    mike

    1.Cortex-A9 has a private timer that supports one short and continous modes. We can configure it as continous mode and it will generates periodic interrupts without any more configuration.

    2.Cortex-A53 replaces the private timer with generic timer. But…

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • How to check Cache DATA view for Juno

    armdev
    armdev

    Hi,

    I am trying to check cache line for an address by connecting Juno with DS-5 but I get "No tables available".

    I also changed DTSL configuration editor settings by enabling both options bust still can not see any thing.

    I also tried running directly…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Issue with stxr in ARMv8

    armdev
    armdev

    Hi,

    I am writing a simple spinlock taking Juno arm trusted firmware spinlock code.

    But for me stxr instruction is always failing giving w1 value as "1" always.

    When I read ARMv8 spec it says (under section B2.10.5) "Unpredictable behavior when…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Big-endian kernel run on Juno board

    Liu Song
    Liu Song

    Hi All,

         My Juno board could run a big-endian kernel, but it just work in UP mode, when I compiled

    the kernel in SMP mode, it always halted in "arch_spin_lock".

         I checked the PE status, when halted, pc register alway…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Why does it fail to switch from EL3 to SVC mode ?

    mike
    mike

    (1) I intrrrupt the cpu in UEFI (EL2) by press enter key when the serial outputs the following message.

    NOTICE:  Booting Trusted Firmware

    NOTICE:  BL1: v1.0(release):14b6608

    NOTICE:  BL1: Built : 14:15:51, Sep  1 2014

    NOTICE:  BL1: Booting…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • JUNO idle states - how to exit from

    Anes
    Anes

    Hi,

    I have examined "cpuidle" procedure for ARM JUNO board with different idle states. My question is related to idle states which will cause the CPU core to suspend itself. I am familiar with properties under "idle-state" device tree node. …

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • How could Juno board run a Big-Endian kernel?

    Liu Song
    Liu Song

    Hi All,

        I want lauch Big-Endian(instructions little endian, data big endian) kernel on Juno board. I compiled the kernel with "CONFIG_CPU_BIG_ENDIAN = y".

    I also confirmed that the Image's instructions compiled in little endian…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • how to bypass BL3-1 arm-trusted-firmware running on Juno

    armdev
    armdev

    Hi,

    I am trying to take control at EL3 level and want to run my code on Juno. I am using arm-trusted-firmware package running on Juno.

    In order to achieve this I am using DS-5 debugger to breakthrough the code and setting the PC to my code but instead of…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Some questions about the SMMU of JUNO SoC

    wangyong
    wangyong

    JUNO SoC provides additional support for virtualization except Cortex-A57/A53 as follows:
    The CoreLink GIC-400.
    Stage 2 page table translation for masters, that the following provide:
    A CoreLink MMU-401 System Memory Management Unit (SMMU) for the following…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • DMA transactions monitoring in juno board

    Pallavi
    Pallavi

    Hi,

    We are interested in monitoring all the DMA transactions throughout juno board. we have gone through the technical reference manual and found PL330 is the respective DMA controller but found that the respective code in kernel is not getting compiled…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • How to measure power consumption in Juno Board?

    Nitin Chaudhary
    Nitin Chaudhary

    We are interested in measuring the power consumption (current consumption basically) in the Juno versatile board under different test scenarios. How could it be achieved?

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Anyone successfully communicating with the Juno user microSD card ?

    Stefan
    Stefan

    I have difficulties getting any command to be completed.

    Depending on power up sequence I get status 0x4 = "Command response timeout" or 0x800 = "Command transfer in progress" forever.

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Does anyone try to boot the latest kernel(3.19) on Juno?

    Chanho Park
    Chanho Park

    Hi,

    I want to enable the latest kernel on my juno board. Unfortunately, there is no kernel log after EFI.

    Is anything wrong?

    Start: 1

       PEI    219 ms

       DXE  13971 ms

       BDS   1088 ms

    Total Time =…

    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Is Juno soc_uart1 only available in secure state ?

    Stefan
    Stefan

    I've been trying to use the soc_uart1 on the Juno board the same way as soc_uart0, but there seems to be a problem with this.

    Some files in 'arm-trusted-firmware' hint that the uart1 is only available in the secure world. Can I change this and use…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
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