a36465426b
Issue #2207
200 lines
5.7 KiB
C++
200 lines
5.7 KiB
C++
/*
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* \brief Platform implementation specific for hw
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* \author Martin Stein
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* \author Stefan Kalkowski
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* \date 2011-12-21
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*/
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/*
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* Copyright (C) 2011-2017 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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/* Genode includes */
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#include <base/log.h>
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/* core includes */
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#include <boot_modules.h>
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#include <core_log.h>
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#include <hw/memory_region.h>
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#include <map_local.h>
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#include <platform.h>
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#include <platform_pd.h>
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#include <hw/page_flags.h>
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#include <hw/util.h>
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#include <pic.h>
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#include <kernel/kernel.h>
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#include <translation_table.h>
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#include <kernel/cpu.h>
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/* base-internal includes */
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#include <base/internal/crt0.h>
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#include <base/internal/stack_area.h>
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using namespace Genode;
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/**************
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** Platform **
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**************/
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Hw::Boot_info const & Platform::_boot_info() {
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return *reinterpret_cast<Hw::Boot_info*>(Hw::Mm::boot_info().base); }
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addr_t Platform::mmio_to_virt(addr_t mmio) {
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return _boot_info().mmio_space.virt_addr(mmio); }
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addr_t Platform::core_page_table() {
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return (addr_t)_boot_info().table; }
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Hw::Page_table::Allocator & Platform::core_page_table_allocator()
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{
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using Allocator = Hw::Page_table::Allocator;
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using Array = Allocator::Array<Hw::Page_table::CORE_TRANS_TABLE_COUNT>;
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addr_t virt_addr = Hw::Mm::core_page_tables().base + sizeof(Hw::Page_table);
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return *unmanaged_singleton<Array::Allocator>(_boot_info().table_allocator,
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virt_addr);
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}
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void Platform::_init_io_mem_alloc()
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{
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/* add entire adress space minus the RAM memory regions */
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_io_mem_alloc.add_range(0, ~0x0UL);
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_boot_info().ram_regions.for_each([this] (Hw::Memory_region const &r) {
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_io_mem_alloc.remove_range(r.base, r.size); });
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};
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Hw::Memory_region_array const & Platform::_core_virt_regions()
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{
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return *unmanaged_singleton<Hw::Memory_region_array>(
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Hw::Memory_region(stack_area_virtual_base(), stack_area_virtual_size()));
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}
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addr_t Platform::core_phys_addr(addr_t virt)
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{
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addr_t ret = 0;
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_boot_info().elf_mappings.for_each([&] (Hw::Mapping const & m)
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{
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if (virt >= m.virt() && virt < (m.virt() + m.size()))
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ret = (virt - m.virt()) + m.phys();
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});
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return ret;
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}
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addr_t Platform::_rom_module_phys(addr_t virt)
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{
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Hw::Mapping m = _boot_info().boot_modules;
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if (virt >= m.virt() && virt < (m.virt() + m.size()))
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return (virt - m.virt()) + m.phys();
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return 0;
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}
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Platform::Platform()
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:
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_io_mem_alloc(core_mem_alloc()),
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_io_port_alloc(core_mem_alloc()),
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_irq_alloc(core_mem_alloc())
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{
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struct Kernel_resource : Exception { };
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_core_mem_alloc.virt_alloc()->add_range(Hw::Mm::core_heap().base,
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Hw::Mm::core_heap().size);
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_core_virt_regions().for_each([this] (Hw::Memory_region const & r) {
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_core_mem_alloc.virt_alloc()->remove_range(r.base, r.size); });
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_boot_info().elf_mappings.for_each([this] (Hw::Mapping const & m) {
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_core_mem_alloc.virt_alloc()->remove_range(m.virt(), m.size()); });
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_boot_info().ram_regions.for_each([this] (Hw::Memory_region const & region) {
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_core_mem_alloc.phys_alloc()->add_range(region.base, region.size); });
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_init_io_port_alloc();
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/* make all non-kernel interrupts available to the interrupt allocator */
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for (unsigned i = 0; i < Kernel::Pic::NR_OF_IRQ; i++) {
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bool kernel_resource = false;
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Kernel::cpu_pool()->for_each_cpu([&] (Kernel::Cpu const &cpu) {
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if (i == cpu.timer_interrupt_id()) {
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kernel_resource = true;
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}
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});
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if (i == Pic::IPI) {
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kernel_resource = true;
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}
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if (kernel_resource) {
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continue;
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}
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_irq_alloc.add_range(i, 1);
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}
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_init_io_mem_alloc();
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_init_rom_modules();
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_init_additional();
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/* core log as ROM module */
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{
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void * core_local_ptr = nullptr;
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void * phys_ptr = nullptr;
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unsigned const pages = 1;
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size_t const log_size = pages << get_page_size_log2();
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ram_alloc()->alloc_aligned(log_size, &phys_ptr, get_page_size_log2());
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addr_t const phys_addr = reinterpret_cast<addr_t>(phys_ptr);
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/* let one page free after the log buffer */
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region_alloc()->alloc_aligned(log_size, &core_local_ptr, get_page_size_log2());
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addr_t const core_local_addr = reinterpret_cast<addr_t>(core_local_ptr);
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map_local(phys_addr, core_local_addr, pages);
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memset(core_local_ptr, 0, log_size);
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_rom_fs.insert(new (core_mem_alloc()) Rom_module(phys_addr, log_size,
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"core_log"));
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init_core_log(Core_log_range { core_local_addr, log_size } );
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}
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/* print ressource summary */
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log(":virt_alloc: ", *_core_mem_alloc.virt_alloc());
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log(":phys_alloc: ", *_core_mem_alloc.phys_alloc());
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log(":io_mem_alloc: ", _io_mem_alloc);
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log(":io_port_alloc: ", _io_port_alloc);
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log(":irq_alloc: ", _irq_alloc);
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log(":rom_fs: ", _rom_fs);
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}
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/****************************************
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** Support for core memory management **
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****************************************/
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bool Genode::map_local(addr_t from_phys, addr_t to_virt, size_t num_pages,
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Page_flags flags)
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{
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Platform_pd * pd = Kernel::core_pd()->platform_pd();
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return pd->insert_translation(to_virt, from_phys,
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num_pages * get_page_size(), flags);
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}
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bool Genode::unmap_local(addr_t virt_addr, size_t num_pages)
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{
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Platform_pd * pd = Kernel::core_pd()->platform_pd();
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pd->flush(virt_addr, num_pages * get_page_size());
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return true;
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}
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bool Mapped_mem_allocator::_map_local(addr_t virt_addr, addr_t phys_addr,
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unsigned size) {
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return ::map_local(phys_addr, virt_addr, size / get_page_size()); }
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bool Mapped_mem_allocator::_unmap_local(addr_t virt_addr, addr_t phys_addr,
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unsigned size) {
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return ::unmap_local(virt_addr, size / get_page_size()); }
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