@samitouri / QOSamiQemu
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1 /*
2 * TriCore Baseboard System emulation.
3 *
4 * Copyright (c) 2013-2014 Bastian Koppelmann C-Lab/University Paderborn
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20
21 #include "qemu/osdep.h"
22 #include "qemu/units.h"
23 #include "qapi/error.h"
24 #include "target/tricore/cpu.h"
25 #include "net/net.h"
26 #include "hw/core/boards.h"
27 #include "hw/core/loader.h"
28 #include "elf.h"
29 #include "hw/tricore/tricore.h"
30 #include "hw/tricore/tricore_testdevice.h"
31 #include "qemu/error-report.h"
32
33
34 /* Board init. */
35
36 static struct tricore_boot_info tricoretb_binfo;
37
38 static void tricore_load_kernel(CPUTriCoreState *env)
39 {
40 uint64_t entry;
41 long kernel_size;
42
43 kernel_size = load_elf(tricoretb_binfo.kernel_filename, NULL,
44 NULL, NULL, &entry, NULL,
45 NULL, NULL, ELFDATA2LSB,
46 EM_TRICORE, 1, 0);
47 if (kernel_size <= 0) {
48 error_report("no kernel file '%s'",
49 tricoretb_binfo.kernel_filename);
50 exit(1);
51 }
52 env->PC = entry;
53
54 }
55
56 static void tricore_testboard_init(MachineState *machine, int board_id)
57 {
58 TriCoreCPU *cpu;
59 CPUTriCoreState *env;
60 TriCoreTestDeviceState *test_dev;
61
62 MemoryRegion *sysmem = get_system_memory();
63 MemoryRegion *ext_cram = g_new(MemoryRegion, 1);
64 MemoryRegion *ext_dram = g_new(MemoryRegion, 1);
65 MemoryRegion *int_cram = g_new(MemoryRegion, 1);
66 MemoryRegion *int_dram = g_new(MemoryRegion, 1);
67 MemoryRegion *pcp_data = g_new(MemoryRegion, 1);
68 MemoryRegion *pcp_text = g_new(MemoryRegion, 1);
69
70 cpu = TRICORE_CPU(cpu_create(machine->cpu_type));
71 env = &cpu->env;
72 memory_region_init_ram(ext_cram, NULL, "powerlink_ext_c.ram",
73 2 * MiB, &error_fatal);
74 memory_region_init_ram(ext_dram, NULL, "powerlink_ext_d.ram",
75 4 * MiB, &error_fatal);
76 memory_region_init_ram(int_cram, NULL, "powerlink_int_c.ram", 48 * KiB,
77 &error_fatal);
78 memory_region_init_ram(int_dram, NULL, "powerlink_int_d.ram", 48 * KiB,
79 &error_fatal);
80 memory_region_init_ram(pcp_data, NULL, "powerlink_pcp_data.ram",
81 16 * KiB, &error_fatal);
82 memory_region_init_ram(pcp_text, NULL, "powerlink_pcp_text.ram",
83 32 * KiB, &error_fatal);
84
85 memory_region_add_subregion(sysmem, 0x80000000, ext_cram);
86 memory_region_add_subregion(sysmem, 0xa1000000, ext_dram);
87 memory_region_add_subregion(sysmem, 0xd4000000, int_cram);
88 memory_region_add_subregion(sysmem, 0xd0000000, int_dram);
89 memory_region_add_subregion(sysmem, 0xf0050000, pcp_data);
90 memory_region_add_subregion(sysmem, 0xf0060000, pcp_text);
91
92 test_dev = TRICORE_TESTDEVICE(qdev_new(TYPE_TRICORE_TESTDEVICE));
93 memory_region_add_subregion(sysmem, 0xf0000000, &test_dev->iomem);
94
95
96 tricoretb_binfo.ram_size = machine->ram_size;
97 tricoretb_binfo.kernel_filename = machine->kernel_filename;
98
99 if (machine->kernel_filename) {
100 tricore_load_kernel(env);
101 }
102 }
103
104 static void tricoreboard_init(MachineState *machine)
105 {
106 tricore_testboard_init(machine, 0x183);
107 }
108
109 static void ttb_machine_init(MachineClass *mc)
110 {
111 mc->desc = "a minimal TriCore board";
112 mc->init = tricoreboard_init;
113 mc->default_cpu_type = TRICORE_CPU_TYPE_NAME("tc1796");
114 }
115
116 DEFINE_MACHINE("tricore_testboard", ttb_machine_init)