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epit: move timer to imx repository

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Issue #5138
This commit is contained in:
Alexander Boettcher 2024-06-26 15:37:41 +02:00 committed by Norman Feske
parent 969a0583ee
commit 462718bcf0
6 changed files with 2 additions and 179 deletions
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3
repos/base-sel4/recipes/src/base-sel4-imx6q_sabrelite/content.mk
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@ -35,7 +35,8 @@ etc/board.conf:
content:
mv lib/mk/spec/arm/ld-sel4.mk lib/mk/spec/arm/ld.mk;
sed -i "s/imx6_timer/timer/" src/timer/epit/imx6/target.inc
cp -r $(GENODE_DIR)/repos/imx/src/timer/epit src/timer/epit
sed -i "s/imx6_timer/timer/" src/timer/epit/target.mk
find lib/mk/spec -name kernel-sel4-*.mk -o -name syscall-sel4-*.mk |\
grep -v "sel4-imx6q_sabrelite.mk" | xargs rm -rf

1
repos/base-sel4/src/timer/epit/imx6q_sabrelite/target.mk
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@ -1 +0,0 @@
include $(call select_from_repositories,src/timer/epit/imx6/target.inc)

9
repos/base/src/timer/epit/imx6/target.inc
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@ -1,9 +0,0 @@
TARGET = imx6_timer
REQUIRES = arm_v7
GEN_DIR := $(dir $(call select_from_repositories,src/timer/main.cc))
INC_DIR += $(GEN_DIR)/epit
SRC_CC += epit/time_source.cc epit/imx6/timer.cc
include $(GEN_DIR)/target.inc
vpath %.cc $(GEN_DIR)

36
repos/base/src/timer/epit/imx6/timer.cc
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@ -1,36 +0,0 @@
/*
* \brief Time source for i.MX6 (EPIT2)
* \author Norman Feske
* \author Martin Stein
* \author Stefan Kalkowski
* \author Alexander Boettcher
* \date 2009-06-16
*/
/*
* Copyright (C) 2009-2017 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.
*/
/* local include */
#include <time_source.h>
enum {
EPIT_2_IRQ = 89,
EPIT_2_MMIO_BASE = 0x020d4000,
EPIT_2_MMIO_SIZE = 0x00004000
};
using namespace Genode;
Timer::Time_source::Time_source(Env &env)
:
Attached_mmio(env, {(char *)EPIT_2_MMIO_BASE, EPIT_2_MMIO_SIZE}),
Signalled_time_source(env),
_timer_irq(env, unsigned(EPIT_2_IRQ))
{
_timer_irq.sigh(_signal_handler);
while (read<Cr::Swr>()) ;
}

55
repos/base/src/timer/epit/time_source.cc
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@ -1,55 +0,0 @@
/*
* \brief Time source that uses the Enhanced Periodic Interrupt Timer (Freescale)
* \author Norman Feske
* \author Martin Stein
* \author Stefan Kalkowski
* \author Alexander Boettcher
* \date 2009-06-16
*/
/*
* Copyright (C) 2009-2017 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.
*/
/* local includes */
#include <time_source.h>
using namespace Genode;
void Timer::Time_source::set_timeout(Genode::Microseconds duration,
Genode::Timeout_handler &handler)
{
unsigned long const ticks = (unsigned long)((1ULL * duration.value * TICKS_PER_MS) / 1000);
_handler = &handler;
_timer_irq.ack_irq();
_cleared_ticks = 0;
/* disable timer */
write<Cr::En>(0);
/* clear interrupt and install timeout */
write<Sr::Ocif>(1);
write<Cr>(Cr::prepare_one_shot());
write<Cmpr>(Cnt::MAX - ticks);
/* start timer */
write<Cr::En>(1);
}
Duration Timer::Time_source::curr_time()
{
unsigned long const uncleared_ticks = Cnt::MAX - read<Cnt>() - _cleared_ticks;
unsigned long const uncleared_us = timer_ticks_to_us(uncleared_ticks, TICKS_PER_MS);
/* update time only on IRQs and if rate is under 1000 per second */
if (_irq || uncleared_us > 1000) {
_curr_time.add(Genode::Microseconds(uncleared_us));
_cleared_ticks += uncleared_ticks;
}
return _curr_time;
}

77
repos/base/src/timer/epit/time_source.h
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@ -1,77 +0,0 @@
/*
* \brief Time source that uses the Enhanced Periodic Interrupt Timer (Freescale)
* \author Norman Feske
* \author Martin Stein
* \author Stefan Kalkowski
* \date 2009-06-16
*/
/*
* Copyright (C) 2009-2017 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.
*/
#ifndef _TIME_SOURCE_H_
#define _TIME_SOURCE_H_
/* Genode includes */
#include <irq_session/connection.h>
#include <os/attached_mmio.h>
#include <drivers/timer/util.h>
/* local includes */
#include <signalled_time_source.h>
namespace Timer { class Time_source; }
class Timer::Time_source : private Genode::Attached_mmio<0x14>,
public Genode::Signalled_time_source
{
private:
enum { TICKS_PER_MS = 66000 };
struct Cr : Register<0x0, 32>
{
struct En : Bitfield<0, 1> { };
struct En_mod : Bitfield<1, 1> { enum { RELOAD = 1 }; };
struct Oci_en : Bitfield<2, 1> { };
struct Swr : Bitfield<16, 1> { };
struct Clk_src : Bitfield<24, 2> { enum { HIGH_FREQ_REF_CLK = 2 }; };
static access_t prepare_one_shot()
{
access_t cr = 0;
En_mod::set(cr, En_mod::RELOAD);
Oci_en::set(cr, 1);
Clk_src::set(cr, Clk_src::HIGH_FREQ_REF_CLK);
return cr;
}
};
struct Sr : Register<0x4, 32> { struct Ocif : Bitfield<0, 1> { }; };
struct Cmpr : Register<0xc, 32> { };
struct Cnt : Register<0x10, 32> { enum { MAX = ~(access_t)0 }; };
Genode::Irq_connection _timer_irq;
Genode::Duration _curr_time { Genode::Microseconds(0) };
Genode::Microseconds const _max_timeout { Genode::timer_ticks_to_us(Cnt::MAX / 2, TICKS_PER_MS) };
unsigned long _cleared_ticks { 0 };
public:
Time_source(Genode::Env &env);
/*************************
** Genode::Time_source **
*************************/
Genode::Duration curr_time() override;
void set_timeout(Genode::Microseconds, Genode::Timeout_handler &) override;
Genode::Microseconds max_timeout() const override { return _max_timeout; };
};
#endif /* _TIME_SOURCE_H_ */