6b289a1423
This patch replaces the former prominent use of pointers by references wherever feasible. This has the following benefits: * The contract between caller and callee becomes more obvious. When passing a reference, the contract says that the argument cannot be a null pointer. The caller is responsible to ensure that. Therefore, the use of reference eliminates the need to add defensive null-pointer checks at the callee site, which sometimes merely exist to be on the safe side. The bottom line is that the code becomes easier to follow. * Reference members must be initialized via an object initializer, which promotes a programming style that avoids intermediate object- construction states. Within core, there are still a few pointers as member variables left though. E.g., caused by the late association of 'Platform_thread' objects with their 'Platform_pd' objects. * If no pointers are present as member variables, we don't need to manually provide declarations of a private copy constructor and an assignment operator to avoid -Weffc++ errors "class ... has pointer data members [-Werror=effc++]". This patch also changes a few system bindings on NOVA and Fiasco.OC, e.g., the return value of the global 'cap_map' accessor has become a reference. Hence, the patch touches a few places outside of core. Fixes #3135
664 lines
22 KiB
C++
664 lines
22 KiB
C++
/*
|
|
* \brief Platform interface implementation
|
|
* \author Norman Feske
|
|
* \date 2015-05-01
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2015-2017 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.
|
|
*/
|
|
|
|
/* Genode includes */
|
|
#include <base/sleep.h>
|
|
#include <base/thread.h>
|
|
#include <base/log.h>
|
|
#include <trace/source_registry.h>
|
|
#include <util/xml_generator.h>
|
|
|
|
/* core includes */
|
|
#include <boot_modules.h>
|
|
#include <core_log.h>
|
|
#include <platform.h>
|
|
#include <map_local.h>
|
|
#include <cnode.h>
|
|
#include <untyped_memory.h>
|
|
#include <thread_sel4.h>
|
|
|
|
/* base-internal includes */
|
|
#include <base/internal/globals.h>
|
|
#include <base/internal/stack_area.h>
|
|
|
|
/* seL4 includes */
|
|
#include <sel4/benchmark_utilisation_types.h>
|
|
|
|
using namespace Genode;
|
|
|
|
static bool const verbose_boot_info = true;
|
|
|
|
/**
|
|
* Platform object is set if object is currently in construction.
|
|
* Avoids deadlocks due to nested calls of Platform() constructor caused by
|
|
* platform_specific(). May happen if meta data allocator of phys_alloc runs
|
|
* out of memory.
|
|
*/
|
|
static Platform * platform_in_construction = nullptr;
|
|
|
|
/*
|
|
* Memory-layout information provided by the linker script
|
|
*/
|
|
|
|
/* virtual address range consumed by core's program image */
|
|
extern unsigned _prog_img_beg, _prog_img_end;
|
|
|
|
|
|
/****************************************
|
|
** Support for core memory management **
|
|
****************************************/
|
|
|
|
bool Mapped_mem_allocator::_map_local(addr_t virt_addr, addr_t phys_addr,
|
|
unsigned size)
|
|
{
|
|
if (platform_in_construction)
|
|
Genode::warning("need physical memory, but Platform object not constructed yet");
|
|
|
|
size_t const num_pages = size / get_page_size();
|
|
|
|
Untyped_memory::convert_to_page_frames(phys_addr, num_pages);
|
|
|
|
return map_local(phys_addr, virt_addr, num_pages, platform_in_construction);
|
|
}
|
|
|
|
|
|
bool Mapped_mem_allocator::_unmap_local(addr_t virt_addr, addr_t phys_addr,
|
|
unsigned size)
|
|
{
|
|
if (!unmap_local(virt_addr, size / get_page_size()))
|
|
return false;
|
|
|
|
Untyped_memory::convert_to_untyped_frames(phys_addr, size);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/************************
|
|
** Platform interface **
|
|
************************/
|
|
|
|
void Platform::_init_unused_phys_alloc()
|
|
{
|
|
/* the lower physical ram is kept by the kernel and not usable to us */
|
|
_unused_phys_alloc.add_range(0x100000, 0UL - 0x100000);
|
|
}
|
|
|
|
|
|
void Platform::_init_allocators()
|
|
{
|
|
/* interrupt allocator */
|
|
_irq_alloc.add_range(0, 256);
|
|
|
|
/*
|
|
* XXX allocate intermediate CNodes for organizing the untyped pages here
|
|
*/
|
|
|
|
/* turn remaining untyped memory ranges into untyped pages */
|
|
_initial_untyped_pool.turn_into_untyped_object(Core_cspace::TOP_CNODE_UNTYPED_4K,
|
|
[&] (addr_t const phys, addr_t const size, bool const device) {
|
|
/* register to physical or iomem memory allocator */
|
|
|
|
addr_t const phys_addr = trunc_page(phys);
|
|
size_t const phys_size = round_page(phys - phys_addr + size);
|
|
|
|
if (device)
|
|
_io_mem_alloc.add_range(phys_addr, phys_size);
|
|
else
|
|
_core_mem_alloc.phys_alloc().add_range(phys_addr, phys_size);
|
|
|
|
_unused_phys_alloc.remove_range(phys_addr, phys_size);
|
|
});
|
|
|
|
/*
|
|
* From this point on, we can no longer create kernel objects from the
|
|
* '_initial_untyped_pool' because the pool is empty.
|
|
*/
|
|
|
|
/* core's maximum virtual memory area */
|
|
_unused_virt_alloc.add_range(_vm_base, _vm_size);
|
|
|
|
/* remove core image from core's virtual address allocator */
|
|
addr_t const modules_start = reinterpret_cast<addr_t>(&_boot_modules_binaries_begin);
|
|
addr_t const core_virt_beg = trunc_page((addr_t)&_prog_img_beg),
|
|
core_virt_end = round_page((addr_t)&_prog_img_end);
|
|
addr_t const image_elf_size = core_virt_end - core_virt_beg;
|
|
|
|
_unused_virt_alloc.remove_range(core_virt_beg, image_elf_size);
|
|
_core_mem_alloc.virt_alloc().add_range(modules_start, core_virt_end - modules_start);
|
|
|
|
/* remove initial IPC buffer from core's virtual address allocator */
|
|
seL4_BootInfo const &bi = sel4_boot_info();
|
|
addr_t const core_ipc_buffer = reinterpret_cast<addr_t>(bi.ipcBuffer);
|
|
addr_t const core_ipc_bsize = 4096;
|
|
_unused_virt_alloc.remove_range(core_ipc_buffer, core_ipc_bsize);
|
|
|
|
/* remove sel4_boot_info page from core's virtual address allocator */
|
|
addr_t const boot_info_page = reinterpret_cast<addr_t>(&bi);
|
|
addr_t const boot_info_size = 4096 + bi.extraLen;
|
|
_unused_virt_alloc.remove_range(boot_info_page, boot_info_size);
|
|
|
|
/* preserve stack area in core's virtual address space */
|
|
_unused_virt_alloc.remove_range(stack_area_virtual_base(),
|
|
stack_area_virtual_size());
|
|
|
|
if (verbose_boot_info) {
|
|
typedef Hex_range<addr_t> Hex_range;
|
|
log("virtual address layout of core:");
|
|
log(" overall ", Hex_range(_vm_base, _vm_size));
|
|
log(" core image ", Hex_range(core_virt_beg, image_elf_size));
|
|
log(" ipc buffer ", Hex_range(core_ipc_buffer, core_ipc_bsize));
|
|
log(" boot_info ", Hex_range(boot_info_page, boot_info_size));
|
|
log(" stack area ", Hex_range(stack_area_virtual_base(),
|
|
stack_area_virtual_size()));
|
|
}
|
|
}
|
|
|
|
|
|
void Platform::_switch_to_core_cspace()
|
|
{
|
|
Cnode_base const initial_cspace(Cap_sel(seL4_CapInitThreadCNode),
|
|
CONFIG_WORD_SIZE);
|
|
|
|
/* copy initial selectors to core's CNode */
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapInitThreadTCB));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapInitThreadVSpace));
|
|
_core_cnode.move(initial_cspace, Cnode_index(seL4_CapIRQControl)); /* cannot be copied */
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapASIDControl));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapInitThreadASIDPool));
|
|
/* XXX io port not available on ARM, causes just a kernel warning XXX */
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapIOPort));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapBootInfoFrame));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapInitThreadIPCBuffer));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(seL4_CapDomain));
|
|
|
|
/* replace seL4_CapInitThreadCNode with new top-level CNode */
|
|
_core_cnode.copy(initial_cspace, Cnode_index(Core_cspace::top_cnode_sel()),
|
|
Cnode_index(seL4_CapInitThreadCNode));
|
|
|
|
/* copy untyped memory selectors to core's CNode */
|
|
seL4_BootInfo const &bi = sel4_boot_info();
|
|
|
|
/*
|
|
* We have to move (not copy) the selectors for the initial untyped ranges
|
|
* because some of them are already populated with kernel objects allocated
|
|
* via '_initial_untyped_pool'. For such an untyped memory range, the
|
|
* attempt to copy its selector would result in the following error:
|
|
*
|
|
* <<seL4: Error deriving cap for CNode Copy operation.>>
|
|
*/
|
|
for (unsigned sel = bi.untyped.start; sel < bi.untyped.end; sel++)
|
|
_core_cnode.move(initial_cspace, Cnode_index(sel));
|
|
|
|
/* move selectors of core image */
|
|
addr_t const modules_start = reinterpret_cast<addr_t>(&_boot_modules_binaries_begin);
|
|
addr_t const modules_end = reinterpret_cast<addr_t>(&_boot_modules_binaries_end);
|
|
addr_t virt_addr = (addr_t)(&_prog_img_beg);
|
|
|
|
for (unsigned sel = bi.userImageFrames.start;
|
|
sel < bi.userImageFrames.end;
|
|
sel++, virt_addr += get_page_size()) {
|
|
|
|
/* remove mapping to boot modules, no access required within core */
|
|
if (modules_start <= virt_addr && virt_addr < modules_end) {
|
|
long err = _unmap_page_frame(Cap_sel(sel));
|
|
if (err != seL4_NoError)
|
|
error("unmapping boot modules ", Hex(virt_addr), " error=", err);
|
|
}
|
|
|
|
/* insert cap for core image */
|
|
_core_cnode.move(initial_cspace, Cnode_index(sel));
|
|
}
|
|
|
|
/* copy statically created CNode selectors to core's CNode */
|
|
_core_cnode.copy(initial_cspace, Cnode_index(Core_cspace::top_cnode_sel()));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(Core_cspace::core_pad_cnode_sel()));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(Core_cspace::core_cnode_sel()));
|
|
_core_cnode.copy(initial_cspace, Cnode_index(Core_cspace::phys_cnode_sel()));
|
|
|
|
/*
|
|
* Construct CNode hierarchy of core's CSpace
|
|
*/
|
|
|
|
/* insert 3rd-level core CNode into 2nd-level core-pad CNode */
|
|
_core_pad_cnode.copy(initial_cspace, Cnode_index(Core_cspace::core_cnode_sel()),
|
|
Cnode_index(0));
|
|
|
|
/* insert 2nd-level core-pad CNode into 1st-level CNode */
|
|
_top_cnode.copy(initial_cspace, Cnode_index(Core_cspace::core_pad_cnode_sel()),
|
|
Cnode_index(Core_cspace::TOP_CNODE_CORE_IDX));
|
|
|
|
/* insert 2nd-level phys-mem CNode into 1st-level CNode */
|
|
_top_cnode.copy(initial_cspace, Cnode_index(Core_cspace::phys_cnode_sel()),
|
|
Cnode_index(Core_cspace::TOP_CNODE_PHYS_IDX));
|
|
|
|
/* insert 2nd-level untyped-pages CNode into 1st-level CNode */
|
|
_top_cnode.copy(initial_cspace, Cnode_index(Core_cspace::untyped_cnode_4k()),
|
|
Cnode_index(Core_cspace::TOP_CNODE_UNTYPED_4K));
|
|
|
|
/* insert 2nd-level untyped-pages CNode into 1st-level CNode */
|
|
_top_cnode.move(initial_cspace, Cnode_index(Core_cspace::untyped_cnode_16k()),
|
|
Cnode_index(Core_cspace::TOP_CNODE_UNTYPED_16K));
|
|
|
|
/* activate core's CSpace */
|
|
{
|
|
seL4_CNode_CapData const null_data = { { 0 } };
|
|
seL4_CNode_CapData const guard = seL4_CNode_CapData_new(0, CONFIG_WORD_SIZE - 32);
|
|
|
|
int const ret = seL4_TCB_SetSpace(seL4_CapInitThreadTCB,
|
|
seL4_CapNull, /* fault_ep */
|
|
Core_cspace::top_cnode_sel(),
|
|
guard.words[0],
|
|
seL4_CapInitThreadPD,
|
|
null_data.words[0]);
|
|
|
|
if (ret != seL4_NoError)
|
|
error(__FUNCTION__, ": seL4_TCB_SetSpace returned ", ret);
|
|
}
|
|
}
|
|
|
|
|
|
Cap_sel Platform::_init_asid_pool()
|
|
{
|
|
return Cap_sel(seL4_CapInitThreadASIDPool);
|
|
}
|
|
|
|
|
|
void Platform::_init_rom_modules()
|
|
{
|
|
seL4_BootInfo const &bi = sel4_boot_info();
|
|
|
|
/*
|
|
* Slab allocator for allocating 'Rom_module' meta data.
|
|
*/
|
|
static long slab_block[4096];
|
|
static Tslab<Rom_module, sizeof(slab_block)>
|
|
rom_module_slab(core_mem_alloc(), (Genode::Slab_block *)slab_block);
|
|
|
|
/*
|
|
* Allocate unused range of phys CNode address space where to make the
|
|
* boot modules available.
|
|
*/
|
|
void *out_ptr = nullptr;
|
|
size_t const modules_size = (addr_t)&_boot_modules_binaries_end
|
|
- (addr_t)&_boot_modules_binaries_begin + 1;
|
|
|
|
Range_allocator::Alloc_return const alloc_ret =
|
|
_unused_phys_alloc.alloc_aligned(modules_size, &out_ptr, get_page_size_log2());
|
|
|
|
if (alloc_ret.error()) {
|
|
error("could not reserve phys CNode space for boot modules");
|
|
struct Init_rom_modules_failed { };
|
|
throw Init_rom_modules_failed();
|
|
}
|
|
|
|
/*
|
|
* Calculate frame frame selector used to back the boot modules
|
|
*/
|
|
addr_t const unused_range_start = (addr_t)out_ptr;
|
|
addr_t const unused_first_frame_sel = unused_range_start >> get_page_size_log2();
|
|
addr_t const modules_start = (addr_t)&_boot_modules_binaries_begin;
|
|
addr_t const modules_core_offset = modules_start
|
|
- (addr_t)&_prog_img_beg;
|
|
addr_t const modules_first_frame_sel = bi.userImageFrames.start
|
|
+ (modules_core_offset >> get_page_size_log2());
|
|
|
|
Boot_modules_header const *header = &_boot_modules_headers_begin;
|
|
for (; header < &_boot_modules_headers_end; header++) {
|
|
|
|
/* offset relative to first module */
|
|
addr_t const module_offset = header->base - modules_start;
|
|
addr_t const module_offset_frames = module_offset >> get_page_size_log2();
|
|
size_t const module_size = round_page(header->size);
|
|
addr_t const module_frame_sel = modules_first_frame_sel
|
|
+ module_offset_frames;
|
|
size_t const module_num_frames = module_size >> get_page_size_log2();
|
|
|
|
/*
|
|
* Destination frame within phys CNode
|
|
*/
|
|
addr_t const dst_frame = unused_first_frame_sel + module_offset_frames;
|
|
|
|
/*
|
|
* Install the module's frame selectors into phys CNode
|
|
*/
|
|
Cnode_base const initial_cspace(Cap_sel(seL4_CapInitThreadCNode), 32);
|
|
for (unsigned i = 0; i < module_num_frames; i++)
|
|
_phys_cnode.move(initial_cspace, Cnode_index(module_frame_sel + i),
|
|
Cnode_index(dst_frame + i));
|
|
|
|
log("boot module '", (char const *)header->name, "' "
|
|
"(", header->size, " bytes)");
|
|
|
|
/*
|
|
* Register ROM module, the base address refers to location of the
|
|
* ROM module within the phys CNode address space.
|
|
*/
|
|
Rom_module * rom_module = new (rom_module_slab)
|
|
Rom_module(dst_frame << get_page_size_log2(), header->size,
|
|
(const char*)header->name);
|
|
|
|
_rom_fs.insert(rom_module);
|
|
}
|
|
|
|
/* export x86 platform specific infos via 'platform_info' ROM */
|
|
|
|
unsigned const pages = 1;
|
|
addr_t const rom_size = pages << get_page_size_log2();
|
|
void *virt_ptr = nullptr;
|
|
const char *rom_name = "platform_info";
|
|
|
|
addr_t const phys_addr = Untyped_memory::alloc_page(ram_alloc());
|
|
Untyped_memory::convert_to_page_frames(phys_addr, pages);
|
|
|
|
if (region_alloc().alloc_aligned(rom_size, &virt_ptr, get_page_size_log2()).error()) {
|
|
error("could not setup platform_info ROM - region allocation error");
|
|
Untyped_memory::free_page(ram_alloc(), phys_addr);
|
|
return;
|
|
}
|
|
addr_t const virt_addr = reinterpret_cast<addr_t>(virt_ptr);
|
|
|
|
if (!map_local(phys_addr, virt_addr, pages, this)) {
|
|
error("could not setup platform_info ROM - map error");
|
|
region_alloc().free(virt_ptr);
|
|
Untyped_memory::free_page(ram_alloc(), phys_addr);
|
|
return;
|
|
}
|
|
|
|
Genode::Xml_generator xml(reinterpret_cast<char *>(virt_addr),
|
|
rom_size, rom_name, [&] ()
|
|
{
|
|
|
|
if (!bi.extraLen)
|
|
return;
|
|
|
|
addr_t const boot_info_page = reinterpret_cast<addr_t>(&bi);
|
|
addr_t const boot_info_extra = boot_info_page + 4096;
|
|
|
|
seL4_BootInfoHeader const * element = reinterpret_cast<seL4_BootInfoHeader *>(boot_info_extra);
|
|
seL4_BootInfoHeader const * const last = reinterpret_cast<seL4_BootInfoHeader const * const>(boot_info_extra + bi.extraLen);
|
|
|
|
for (seL4_BootInfoHeader const *next = nullptr;
|
|
(next = reinterpret_cast<seL4_BootInfoHeader const *>(reinterpret_cast<addr_t>(element) + element->len)) &&
|
|
next <= last && element->id != SEL4_BOOTINFO_HEADER_PADDING;
|
|
element = next)
|
|
{
|
|
if (element->id == SEL4_BOOTINFO_HEADER_X86_TSC_FREQ) {
|
|
struct tsc_freq {
|
|
uint32_t freq_mhz;
|
|
} __attribute__((packed));
|
|
if (sizeof(tsc_freq) + sizeof(*element) != element->len) {
|
|
error("unexpected tsc frequency format");
|
|
continue;
|
|
}
|
|
|
|
tsc_freq const * boot_freq = reinterpret_cast<tsc_freq const *>(reinterpret_cast<addr_t>(element) + sizeof(* element));
|
|
|
|
xml.node("hardware", [&] () {
|
|
xml.node("features", [&] () {
|
|
xml.attribute("svm", false);
|
|
xml.attribute("vmx", false);
|
|
});
|
|
xml.node("tsc", [&] () {
|
|
xml.attribute("freq_khz" , boot_freq->freq_mhz * 1000UL);
|
|
});
|
|
});
|
|
}
|
|
|
|
if (element->id == SEL4_BOOTINFO_HEADER_X86_FRAMEBUFFER) {
|
|
struct mbi2_framebuffer {
|
|
uint64_t addr;
|
|
uint32_t pitch;
|
|
uint32_t width;
|
|
uint32_t height;
|
|
uint8_t bpp;
|
|
uint8_t type;
|
|
} __attribute__((packed));
|
|
|
|
if (sizeof(mbi2_framebuffer) + sizeof(*element) != element->len) {
|
|
error("unexpected framebuffer information format");
|
|
continue;
|
|
}
|
|
|
|
mbi2_framebuffer const * boot_fb = reinterpret_cast<mbi2_framebuffer const *>(reinterpret_cast<addr_t>(element) + sizeof(*element));
|
|
|
|
xml.node("boot", [&] () {
|
|
xml.node("framebuffer", [&] () {
|
|
xml.attribute("phys", String<32>(Hex(boot_fb->addr)));
|
|
xml.attribute("width", boot_fb->width);
|
|
xml.attribute("height", boot_fb->height);
|
|
xml.attribute("bpp", boot_fb->bpp);
|
|
xml.attribute("type", boot_fb->type);
|
|
xml.attribute("pitch", boot_fb->pitch);
|
|
});
|
|
});
|
|
}
|
|
|
|
if (element->id != SEL4_BOOTINFO_HEADER_X86_ACPI_RSDP)
|
|
continue;
|
|
|
|
xml.node("acpi", [&] () {
|
|
|
|
struct Acpi_rsdp
|
|
{
|
|
uint64_t signature;
|
|
uint8_t checksum;
|
|
char oem[6];
|
|
uint8_t revision;
|
|
uint32_t rsdt;
|
|
uint32_t length;
|
|
uint64_t xsdt;
|
|
uint32_t reserved;
|
|
|
|
bool valid() const {
|
|
const char sign[] = "RSD PTR ";
|
|
return signature == *(Genode::uint64_t *)sign;
|
|
}
|
|
} __attribute__((packed));
|
|
|
|
Acpi_rsdp const * rsdp = reinterpret_cast<Acpi_rsdp const *>(reinterpret_cast<addr_t>(element) + sizeof(*element));
|
|
|
|
if (rsdp->valid() && (rsdp->rsdt || rsdp->xsdt)) {
|
|
xml.attribute("revision", rsdp->revision);
|
|
if (rsdp->rsdt)
|
|
xml.attribute("rsdt", String<32>(Hex(rsdp->rsdt)));
|
|
|
|
if (rsdp->xsdt)
|
|
xml.attribute("xsdt", String<32>(Hex(rsdp->xsdt)));
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
if (!unmap_local(virt_addr, pages, this)) {
|
|
error("could not setup platform_info ROM - unmap error");
|
|
return;
|
|
}
|
|
region_alloc().free(virt_ptr);
|
|
|
|
_rom_fs.insert(
|
|
new (core_mem_alloc()) Rom_module(phys_addr, rom_size, rom_name));
|
|
}
|
|
|
|
|
|
Platform::Platform()
|
|
:
|
|
|
|
_io_mem_alloc(&core_mem_alloc()), _io_port_alloc(&core_mem_alloc()),
|
|
_irq_alloc(&core_mem_alloc()),
|
|
_unused_phys_alloc(&core_mem_alloc()),
|
|
_unused_virt_alloc(&core_mem_alloc()),
|
|
_init_unused_phys_alloc_done((_init_unused_phys_alloc(), true)),
|
|
_vm_base(0x2000), /* 2nd page is used as IPC buffer of main thread */
|
|
_vm_size(3*1024*1024*1024UL - _vm_base), /* use the lower 3GiB */
|
|
_init_sel4_ipc_buffer_done((init_sel4_ipc_buffer(), true)),
|
|
_switch_to_core_cspace_done((_switch_to_core_cspace(), true)),
|
|
_core_page_table_registry(_core_page_table_registry_alloc),
|
|
_init_core_page_table_registry_done((_init_core_page_table_registry(), true)),
|
|
_init_allocators_done((_init_allocators(), true)),
|
|
_core_vm_space(Cap_sel(seL4_CapInitThreadPD),
|
|
_core_sel_alloc,
|
|
_phys_alloc,
|
|
_top_cnode,
|
|
_core_cnode,
|
|
_phys_cnode,
|
|
Core_cspace::CORE_VM_ID,
|
|
_core_page_table_registry,
|
|
"core")
|
|
{
|
|
platform_in_construction = this;
|
|
|
|
/* start benchmarking for CPU utilization in Genode TRACE service */
|
|
seL4_BenchmarkResetLog();
|
|
|
|
/* create notification object for Genode::Lock used by this first thread */
|
|
Cap_sel lock_sel (INITIAL_SEL_LOCK);
|
|
Cap_sel core_sel = _core_sel_alloc.alloc();
|
|
|
|
{
|
|
addr_t const phys_addr = Untyped_memory::alloc_page(ram_alloc());
|
|
seL4_Untyped const service = Untyped_memory::untyped_sel(phys_addr).value();
|
|
create<Notification_kobj>(service, core_cnode().sel(), core_sel);
|
|
}
|
|
|
|
/* mint a copy of the notification object with badge of lock_sel */
|
|
_core_cnode.mint(_core_cnode, core_sel, lock_sel);
|
|
|
|
/* test signal/wakeup once */
|
|
seL4_Word sender;
|
|
seL4_Signal(lock_sel.value());
|
|
seL4_Wait(lock_sel.value(), &sender);
|
|
|
|
ASSERT(sender == INITIAL_SEL_LOCK);
|
|
|
|
/* back stack area with page tables */
|
|
enum { MAX_CORE_THREADS = 32 };
|
|
_core_vm_space.unsynchronized_alloc_page_tables(stack_area_virtual_base(),
|
|
stack_virtual_size() *
|
|
MAX_CORE_THREADS);
|
|
|
|
/* add some minor virtual region for dynamic usage by core */
|
|
addr_t const virt_size = 32 * 1024 * 1024;
|
|
void * virt_ptr = nullptr;
|
|
if (_unused_virt_alloc.alloc_aligned(virt_size, &virt_ptr, get_page_size_log2()).ok()) {
|
|
|
|
addr_t const virt_addr = (addr_t)virt_ptr;
|
|
|
|
/* add to available virtual region of core */
|
|
_core_mem_alloc.virt_alloc().add_range(virt_addr, virt_size);
|
|
|
|
/* back region by page tables */
|
|
_core_vm_space.unsynchronized_alloc_page_tables(virt_addr, virt_size);
|
|
}
|
|
|
|
/* add idle thread trace subjects */
|
|
for (unsigned cpu_id = 0; cpu_id < affinity_space().width(); cpu_id ++) {
|
|
|
|
struct Idle_trace_source : public Trace::Source::Info_accessor,
|
|
private Trace::Control,
|
|
private Trace::Source,
|
|
private Thread_info
|
|
{
|
|
Affinity::Location const affinity;
|
|
|
|
/**
|
|
* Trace::Source::Info_accessor interface
|
|
*/
|
|
Info trace_source_info() const override
|
|
{
|
|
Genode::Thread &myself = *Genode::Thread::myself();
|
|
addr_t const ipc_buffer = reinterpret_cast<addr_t>(myself.utcb());
|
|
seL4_IPCBuffer * ipcbuffer = reinterpret_cast<seL4_IPCBuffer *>(ipc_buffer);
|
|
uint64_t const * buf = reinterpret_cast<uint64_t *>(ipcbuffer->msg);
|
|
|
|
seL4_BenchmarkGetThreadUtilisation(tcb_sel.value());
|
|
uint64_t execution_time = buf[BENCHMARK_IDLE_TCBCPU_UTILISATION];
|
|
|
|
return { Session_label("kernel"), Trace::Thread_name("idle"),
|
|
Trace::Execution_time(execution_time), affinity };
|
|
}
|
|
|
|
Idle_trace_source(Trace::Source_registry ®istry,
|
|
Platform &platform, Range_allocator &phys_alloc,
|
|
Affinity::Location affinity)
|
|
:
|
|
Trace::Control(),
|
|
Trace::Source(*this, *this), affinity(affinity)
|
|
{
|
|
Thread_info::init_tcb(platform, phys_alloc, 0, affinity.xpos());
|
|
registry.insert(this);
|
|
}
|
|
};
|
|
|
|
new (core_mem_alloc())
|
|
Idle_trace_source(Trace::sources(), *this,
|
|
_core_mem_alloc.phys_alloc(),
|
|
Affinity::Location(cpu_id, 0,
|
|
affinity_space().width(),
|
|
affinity_space().height()));
|
|
}
|
|
|
|
/* I/O port allocator (only meaningful for x86) */
|
|
_io_port_alloc.add_range(0, 0x10000);
|
|
|
|
/* core log as ROM module */
|
|
{
|
|
void * core_local_ptr = nullptr;
|
|
unsigned const pages = 1;
|
|
size_t const log_size = pages << get_page_size_log2();
|
|
|
|
addr_t const phys_addr = Untyped_memory::alloc_page(ram_alloc());
|
|
Untyped_memory::convert_to_page_frames(phys_addr, pages);
|
|
|
|
/* let one page free after the log buffer */
|
|
region_alloc().alloc_aligned(log_size + get_page_size(), &core_local_ptr, get_page_size_log2());
|
|
addr_t const core_local_addr = reinterpret_cast<addr_t>(core_local_ptr);
|
|
|
|
map_local(phys_addr, core_local_addr, pages, this);
|
|
memset(core_local_ptr, 0, log_size);
|
|
|
|
_rom_fs.insert(new (core_mem_alloc()) Rom_module(phys_addr, log_size,
|
|
"core_log"));
|
|
|
|
init_core_log(Core_log_range { core_local_addr, log_size } );
|
|
}
|
|
|
|
_init_rom_modules();
|
|
|
|
platform_in_construction = nullptr;
|
|
}
|
|
|
|
|
|
unsigned Platform::alloc_core_rcv_sel()
|
|
{
|
|
Cap_sel rcv_sel = _core_sel_alloc.alloc();
|
|
|
|
seL4_SetCapReceivePath(_core_cnode.sel().value(), rcv_sel.value(),
|
|
_core_cnode.size_log2());
|
|
|
|
return rcv_sel.value();
|
|
}
|
|
|
|
|
|
void Platform::reset_sel(unsigned sel)
|
|
{
|
|
_core_cnode.remove(Cap_sel(sel));
|
|
}
|
|
|
|
|
|
void Platform::wait_for_exit()
|
|
{
|
|
sleep_forever();
|
|
}
|
|
|