How to use Secure Monitor Call(SMC) and entrance Monitor Mode?

Hello, experts: My platform has a Cortex-A9 MPCore cpu, It supports trustzone tech. I want to change NSACR.TL bit, but It need in secure state. I want to change non-secure state to secure state...
How to use Secure Monitor Call(SMC) and entrance Monitor Mode?

Hello, experts: My platform has a Cortex-A9 MPCore cpu, It supports trustzone tech. I want to change NSACR.TL bit, but It need in secure state. I want to change non-secure state to secure state...
Most efficient way to do a SWAP32 ?

I'm looking for the most efficient way (in terms of code size first, but speed is also an issue) of doing a little-endian to big-endian convertion on a DWORD. The commonly-used C macro: #define...
Most efficient way to do a SWAP32 ?

I'm looking for the most efficient way (in terms of code size first, but speed is also an issue) of doing a little-endian to big-endian convertion on a DWORD. The commonly-used C macro: #define...
Is there a more efficient way to swap two bytes?

I am targeting a Cortex-M0 processor, and am new to Thumb assembly available on the M0. Is there more efficient way to swap two bytes in a 32-bit word (in this example, the middle two bytes)? Thanks!...