8ef2b256b9
We reference the return value of cpu before checking whether it is NULL, The checking code is after that which violates code style. It makes no difference if the cpu is NULL, qemu process will terminate. But one will be 'Segmentation fault' and the other will report a error which is what we want. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/*
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* TriCore Baseboard System emulation.
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*
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* Copyright (c) 2013-2014 Bastian Koppelmann C-Lab/University Paderborn
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw/hw.h"
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#include "hw/devices.h"
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#include "net/net.h"
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#include "sysemu/sysemu.h"
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#include "hw/boards.h"
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#include "hw/loader.h"
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#include "sysemu/block-backend.h"
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#include "exec/address-spaces.h"
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#include "hw/block/flash.h"
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#include "elf.h"
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#include "hw/tricore/tricore.h"
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#include "qemu/error-report.h"
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/* Board init. */
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static struct tricore_boot_info tricoretb_binfo;
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static void tricore_load_kernel(CPUTriCoreState *env)
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{
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uint64_t entry;
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long kernel_size;
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kernel_size = load_elf(tricoretb_binfo.kernel_filename, NULL,
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NULL, (uint64_t *)&entry, NULL,
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NULL, 0,
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ELF_MACHINE, 1);
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if (kernel_size <= 0) {
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error_report("qemu: no kernel file '%s'",
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tricoretb_binfo.kernel_filename);
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exit(1);
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}
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env->PC = entry;
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}
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static void tricore_testboard_init(MachineState *machine, int board_id)
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{
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TriCoreCPU *cpu;
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CPUTriCoreState *env;
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MemoryRegion *sysmem = get_system_memory();
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MemoryRegion *ext_cram = g_new(MemoryRegion, 1);
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MemoryRegion *ext_dram = g_new(MemoryRegion, 1);
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MemoryRegion *int_cram = g_new(MemoryRegion, 1);
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MemoryRegion *int_dram = g_new(MemoryRegion, 1);
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MemoryRegion *pcp_data = g_new(MemoryRegion, 1);
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MemoryRegion *pcp_text = g_new(MemoryRegion, 1);
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if (!machine->cpu_model) {
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machine->cpu_model = "tc1796";
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}
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cpu = cpu_tricore_init(machine->cpu_model);
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if (!cpu) {
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error_report("Unable to find CPU definition");
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exit(1);
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}
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env = &cpu->env;
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memory_region_init_ram(ext_cram, NULL, "powerlink_ext_c.ram", 2*1024*1024, &error_abort);
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vmstate_register_ram_global(ext_cram);
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memory_region_init_ram(ext_dram, NULL, "powerlink_ext_d.ram", 4*1024*1024, &error_abort);
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vmstate_register_ram_global(ext_dram);
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memory_region_init_ram(int_cram, NULL, "powerlink_int_c.ram", 48*1024, &error_abort);
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vmstate_register_ram_global(int_cram);
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memory_region_init_ram(int_dram, NULL, "powerlink_int_d.ram", 48*1024, &error_abort);
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vmstate_register_ram_global(int_dram);
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memory_region_init_ram(pcp_data, NULL, "powerlink_pcp_data.ram", 16*1024, &error_abort);
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vmstate_register_ram_global(pcp_data);
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memory_region_init_ram(pcp_text, NULL, "powerlink_pcp_text.ram", 32*1024, &error_abort);
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vmstate_register_ram_global(pcp_text);
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memory_region_add_subregion(sysmem, 0x80000000, ext_cram);
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memory_region_add_subregion(sysmem, 0xa1000000, ext_dram);
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memory_region_add_subregion(sysmem, 0xd4000000, int_cram);
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memory_region_add_subregion(sysmem, 0xd0000000, int_dram);
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memory_region_add_subregion(sysmem, 0xf0050000, pcp_data);
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memory_region_add_subregion(sysmem, 0xf0060000, pcp_text);
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tricoretb_binfo.ram_size = machine->ram_size;
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tricoretb_binfo.kernel_filename = machine->kernel_filename;
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if (machine->kernel_filename) {
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tricore_load_kernel(env);
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}
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}
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static void tricoreboard_init(MachineState *machine)
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{
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tricore_testboard_init(machine, 0x183);
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}
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static QEMUMachine ttb_machine = {
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.name = "tricore_testboard",
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.desc = "a minimal TriCore board",
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.init = tricoreboard_init,
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.is_default = 0,
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};
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static void tricore_testboard_machine_init(void)
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{
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qemu_register_machine(&ttb_machine);
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}
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machine_init(tricore_testboard_machine_init);
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