Hi,
The latest 64-bit architecture can on both AArch64 and AArch32 state.
Can someone tell me how to utilize this feature so that I can seamlessly integrate algorithms (which are optimized with 32-bit and 64-bit instructions) with applications which are…
Hello experts,
I have come to having a question.
VFP Benchmark is a benchmark application which was made by a certain Japanese in order to measure ARM VFP performance especially for ARMv7-A and ARMv8-A.
The software can be downloaded from the following link…
Hi, arm experts,
We want to use ARCH32 mode in secure EL1, I see some descriptions in ARMv8 Arch Reference Manual about Secure EL1 ARCH32 mode as follows:
One is the VBAR(secure), it is mapped to VBAR_EL3, the other is SCTLR (secure), it is mapped to …
Hi ARM expert,
In ARM V7 RM, I saw "This chapter describes the implementation of the ARM Generic Timer as an OPTIONAL extension to an ARMv7-A or ARMv7-R processor implementation.". So, I think it means that a SoC implementation…
For example, write cpsr as following code snippets:
mov r1, sp
movw lr, #0x393
movt lr, #0
msr cpsr_cxsf, lr
do_irq:
...
Is an ISB instruction required after "msr cpsr_cxsf, lr"?
Thank you in advance!
excuse me for my English!!!
i want to write bare-metal startup code in 32-bit mode for LS1043A-Rdb.it is having V8 A53 core.
i have bare-metal 32bit(AARCH32) code for xilinx processor(which is of V8,A53core).How much of that code is useful to write code…
******************************************************************************/
/*****************************************************************************/
/**
* @file translation_table.s
*
* @addtogroup a53_32_boot_code
* @{
* <h2> translation_table…Hi,
I am fairly new to ARM processor and start work with cortexA57 recently. After reading the technical manual and programmer guide , I have some questions regarding the exception level of v8.
1. How does the exception level change from one to…
can you please tell me how to boot up a processor in 32 bit mode for Armv8, A53 core using baremetal code?
how can i know it is booted in 32bit mode?
Thanks.
The Armv8-A architecture continues to evolve, with the additions developed through 2016 collectively known as Armv8.3-A. Grouping enhancements in this manner helps the ecosystem manage tools and software support alongside the large numbers of Armv8-A…
I was reading the ARM architecture reference manual... and thought
Is it possible to implement EL3 AArch64 and change it later to EL3 AArch32?
How to change is...
If I start on cold reset, it will start at EL3 AArch64.
Right after the cold reset, I set the…
Hi there,
I have been going through a lot of ARMv8 documents, and I have a very basic question:
-Can I take a Linux Kernel, compiled for a ARMv7 device, and run it on an ARMv8 device in Aarch32 execution mode?
( Lets assume that the two SOCs are identical…
