46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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* \brief Board implementation specific to PBXA9
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* \author Stefan Kalkowski
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* \date 2016-01-07
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*/
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/*
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* Copyright (C) 2016 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <util/mmio.h>
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#include <board.h>
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#include <kernel/kernel.h>
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bool Cortex_a9::Board::errata(Cortex_a9::Board::Errata err) {
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return false; }
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void Cortex_a9::Board::wake_up_all_cpus(void * const ip)
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{
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/**
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* set the entrypoint for the other CPUs via the flags register
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* of the system control registers. ARMs boot monitor code will
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* read out this register and jump to it after the cpu received
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* an interrupt
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*/
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struct System_control : Genode::Mmio
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{
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struct Flagsset : Register<0x30, 32> { };
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struct Flagsclr : Register<0x34, 32> { };
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System_control(void * const ip)
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: Mmio(SYSTEM_CONTROL_MMIO_BASE)
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{
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write<Flagsclr>(~0UL);
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write<Flagsset>(reinterpret_cast<Flagsset::access_t>(ip));
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}
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} sc(ip);
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/* send an IPI to all other cpus */
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Kernel::pic()->send_ipi();
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}
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