From 9536bae6df5638772a1e8b1c8cf8e321f4ab5452 Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Mon, 31 Jul 2017 18:15:11 -0700 Subject: Add new function-pointer-based console API This patch overhauls the console API to allow for multiple console instances of different drivers that are active at the same time. Instead of binding to well-known function names (like console_core_init), consoles now provide a register function (e.g. console_16550_register()) that will hook them into the list of active consoles. All console operations will be dispatched to all consoles currently in the list. The new API will be selected by the build-time option MULTI_CONSOLE_API, which defaults to ${ERROR_DEPRECATED} for now. The old console API code will be retained to stay backwards-compatible to older platforms, but should no longer be used for any newly added platforms and can hopefully be removed at some point in the future. The new console API is intended to be used for both normal (bootup) and crash use cases, freeing platforms of the need to set up the crash console separately. Consoles can be individually configured to be active active at boot (until first handoff to EL2), at runtime (after first handoff to EL2), and/or after a crash. Console drivers should set a sane default upon registration that can be overridden with the console_set_scope() call. Code to hook up the crash reporting mechanism to this framework will be added with a later patch. This patch only affects AArch64, but the new API could easily be ported to AArch32 as well if desired. Change-Id: I35c5aa2cb3f719cfddd15565eb13c7cde4162549 Signed-off-by: Julius Werner --- Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'Makefile') diff --git a/Makefile b/Makefile index c0fddcf6..3c3f5a40 100644 --- a/Makefile +++ b/Makefile @@ -474,6 +474,7 @@ $(eval $(call assert_boolean,GENERATE_COT)) $(eval $(call assert_boolean,GICV2_G0_FOR_EL3)) $(eval $(call assert_boolean,HW_ASSISTED_COHERENCY)) $(eval $(call assert_boolean,LOAD_IMAGE_V2)) +$(eval $(call assert_boolean,MULTI_CONSOLE_API)) $(eval $(call assert_boolean,NS_TIMER_SWITCH)) $(eval $(call assert_boolean,PL011_GENERIC_UART)) $(eval $(call assert_boolean,PROGRAMMABLE_RESET_ADDRESS)) @@ -515,6 +516,7 @@ $(eval $(call add_define,GICV2_G0_FOR_EL3)) $(eval $(call add_define,HW_ASSISTED_COHERENCY)) $(eval $(call add_define,LOAD_IMAGE_V2)) $(eval $(call add_define,LOG_LEVEL)) +$(eval $(call add_define,MULTI_CONSOLE_API)) $(eval $(call add_define,NS_TIMER_SWITCH)) $(eval $(call add_define,PL011_GENERIC_UART)) $(eval $(call add_define,PLAT_${PLAT})) -- cgit v1.2.3