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base: extend cache maintainance functionality

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Introduce two new cache maintainance functions:
* cache_clean_invalidate_data
* cache_invalidate_data
used to flush or invalidate data-cache lines.

Both functions are typically empty, accept for the ARM architecture.
The commit provides implementations for the base-hw kernel, and Fiasco.OC.

Fixes #4207
This commit is contained in:
Stefan Kalkowski
2021-06-24 14:27:37 +02:00
committed by Christian Helmuth
parent ed0cc5330e
commit e7067050be
26 changed files with 301 additions and 98 deletions
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2
repos/base-sel4/lib/mk/spec/arm/base-sel4.mk
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@@ -1,3 +1,5 @@
LIBS += timeout-arm
vpath cache.cc $(REP_DIR)/src/lib/base/arm
include $(REP_DIR)/lib/mk/base-sel4.inc

32
repos/base-sel4/src/lib/base/arm/cache.cc Normal file
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@@ -0,0 +1,32 @@
/*
* \brief Implementation of the cache operations
* \author Stefan Kalkowski
* \date 2021-06-24
*/
/*
* Copyright (C) 2021 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#include <base/log.h>
#include <cpu/cache.h>
void Genode::cache_coherent(Genode::addr_t, Genode::size_t)
{
error(__func__, " not implemented for this kernel!");
}
void Genode::cache_clean_invalidate_data(Genode::addr_t, Genode::size_t)
{
error(__func__, " not implemented for this kernel!");
}
void Genode::cache_invalidate_data(Genode::addr_t, Genode::size_t)
{
error(__func__, " not implemented for this kernel!");
}