A-extension updates (!780) · Merge requests · OpenHW Group / backup-20241120 / cv32e40x

Created by: silabs-oysteink

Fixed issue in a_decoder where transaction size was set to byte instead of word
Added tracking for type of atomic instruction, LSU now has EX and WB outputs for atomic type
Connected the 'atomic_trans_i' to the LSU PMA (tied to zero in IF) -- PMA will flag misaligned atomics as an error using the same exception codes as for regular loads and stores
SC.W did not take exokay into account, it will now write 1 on failure an 0 on success.
Restricting outstanding transactions while handling atomics: -- No other memory transaction (including atomics) may asserts its address phase while there are outstanding atomics -- No atomic may assert its address phase while there are outstanding memory transaction (including atomics)
Watchpoint triggers will treat AMOs as both read and write

SEC clean when A_EXT=0.

A-extension updates