| /* |
| * Copyright 2022 Google, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "dev/x86/qemu_fw_cfg.hh" |
| |
| #include "arch/x86/bios/e820.hh" |
| #include "base/compiler.hh" |
| #include "base/logging.hh" |
| #include "sim/byteswap.hh" |
| |
| namespace gem5 |
| { |
| |
| namespace qemu |
| { |
| |
| FwCfgItemE820::FwCfgItemE820(const QemuFwCfgItemE820Params &p) : |
| FwCfgItemFixed(p.path, p.arch_specific, p.index) |
| { |
| struct GEM5_PACKED Entry |
| { |
| uint64_t addr; |
| uint64_t size; |
| uint32_t type; |
| }; |
| |
| uint32_t count = p.entries.size(); |
| |
| panic_if(count >= 128, "Too many E820 entries (%d).", count); |
| |
| size_t bytes = count * sizeof(Entry); |
| data.resize(bytes); |
| |
| uint8_t *ptr = data.data(); |
| |
| // Write out the e820 entries. |
| for (auto *e: p.entries) { |
| Entry entry{htole(e->addr), htole(e->size), htole(e->type)}; |
| std::memcpy(ptr, &entry, sizeof(entry)); |
| ptr += sizeof(entry); |
| } |
| }; |
| |
| } // namespace qemu |
| } // namespace gem5 |