From ebc85a24c9c04232e775f5bc7cf4ea9af8e1caa7 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Wed, 15 Jan 2020 17:04:14 +0100 Subject: add TODO concerning smarter use of memory attributes --- TODOs | 2 ++ 1 file changed, 2 insertions(+) diff --git a/TODOs b/TODOs index ebfafc5..e99a150 100644 --- a/TODOs +++ b/TODOs @@ -54,6 +54,8 @@ high priority TODOs are higher; low priority ones and completed ones are lower; * write some procedures for dumping registers and other stuff (for use in debugging); maybe print registers' contents on data/prefetch abort? +* Memory regions can be configured as one of several types, which affects how memory reads/writes are performed by the processor. Dig into that and use the best appropriate settings in paging.c (i.e. normal memory instead of strongly-ordered memory for RAM). + * partially DONE - one can always add more, but we have the most important stuff * Implement some basic utilities for us to use (memcpy, printf, etc...) * partailly DONE - svc works; once we implement processes we could also kill them on aborts * develop userspace process supervision (handling of interrupt caused by svc instruction, proper handling of other data abort, undefined instruction, etc.) -- cgit v1.2.3