123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/*
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* \brief Platform interface
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* \author Norman Feske
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* \author Alexander Boettcher
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* \date 2009-10-02
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*/
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/*
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* Copyright (C) 2009-2017 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 Affero General Public License version 3.
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*/
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#ifndef _CORE__INCLUDE__PLATFORM_H_
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#define _CORE__INCLUDE__PLATFORM_H_
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/* core includes */
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#include <platform_generic.h>
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#include <core_mem_alloc.h>
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#include <address_space.h>
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namespace Genode {
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class Platform : public Platform_generic
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{
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public:
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enum { MAX_SUPPORTED_CPUS = 64};
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private:
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Core_mem_allocator _core_mem_alloc { }; /* core-accessible memory */
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Phys_allocator _io_mem_alloc; /* MMIO allocator */
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Phys_allocator _io_port_alloc; /* I/O port allocator */
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Phys_allocator _irq_alloc; /* IRQ allocator */
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Rom_fs _rom_fs { }; /* ROM file system */
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unsigned _gsi_base_sel { 0 }; /* cap selector of 1st IRQ */
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unsigned _core_pd_sel { 0 }; /* cap selector of root PD */
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addr_t _core_phys_start { 0 };
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/**
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* Virtual address range usable by non-core processes
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*/
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const addr_t _vm_base;
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size_t _vm_size;
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/* available CPUs */
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Affinity::Space _cpus;
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/* map of virtual cpu ids in Genode to kernel cpu ids */
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uint8_t map_cpu_ids[MAX_SUPPORTED_CPUS];
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addr_t _map_pages(addr_t phys_page, addr_t pages,
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bool guard_page = false);
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size_t _max_caps = 0;
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void _init_rom_modules();
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addr_t _rom_module_phys(addr_t virt);
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public:
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/**
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* Constructor
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*/
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Platform();
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/********************************
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** Generic platform interface **
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********************************/
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Range_allocator &ram_alloc() override { return _core_mem_alloc.phys_alloc(); }
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Range_allocator &io_mem_alloc() override { return _io_mem_alloc; }
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Range_allocator &io_port_alloc() override { return _io_port_alloc; }
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Range_allocator &irq_alloc() override { return _irq_alloc; }
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Range_allocator ®ion_alloc() override { return _core_mem_alloc.virt_alloc(); }
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Range_allocator &core_mem_alloc() override { return _core_mem_alloc; }
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addr_t vm_start() const override { return _vm_base; }
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size_t vm_size() const override { return _vm_size; }
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Rom_fs &rom_fs() override { return _rom_fs; }
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size_t max_caps() const override { return _max_caps; }
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void wait_for_exit() override;
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bool supports_direct_unmap() const override { return true; }
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Address_space &core_pd() { ASSERT_NEVER_CALLED; }
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Affinity::Space affinity_space() const override { return _cpus; }
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/*******************
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** NOVA specific **
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*******************/
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/**
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* Return capability selector of first global system interrupt
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*/
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int gsi_base_sel() const { return _gsi_base_sel; }
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/**
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* Determine size of a core local mapping required for a
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* core_rm_session detach().
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*/
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size_t region_alloc_size_at(void * addr) {
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return (_core_mem_alloc.virt_alloc())()->size_at(addr); }
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/**
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* Return kernel CPU ID for given Genode CPU
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*/
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unsigned kernel_cpu_id(unsigned genode_cpu_id);
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/**
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* PD kernel capability selector of core
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*/
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unsigned core_pd_sel() const { return _core_pd_sel; }
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};
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}
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#endif /* _CORE__INCLUDE__PLATFORM_H_ */
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