Why does it fail to switch from EL3 to SVC mode ?

(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...
AArch32: 1:1 MMU: context switching needs Cache flushing?

Hello, My Environment: ARMv8 (A53) using only AArch32 mode the lightweight Real Time Operating System I'm running the small RTOS on AArch32. The OS is using 1:1 MMU mapping, i.e, the virtual...
accuracy of periodic interrupt from generic timer

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...
Building UEFI for Juno using gcc-linaro-arm-none-eabi compiler (32 bit)

Hi . This may be an odd question, but has anyone tried successfully to build UEFI for ARM 32 bit on Juno ? When we attempted to do it this is what we tried without success, please let us know if there...
Affordable arm tools for Assembly or C code for ARM-32 and 64

Hi, i am developing allways opensource code as home hobbies. I have a mac OS and many ARM cortex mainly on RPBI. I use to code GCC but i am now going to SIMD and i am thinking to have a proper dev env...