clock: Add ClockPreUpdate callback event type
[qemu/ar7.git] / hw / rx / rx-gdbsim.c
blobb1d7c2488ff332cfc3de1e39f6d4f3822ac68257
1 /*
2 * RX QEMU GDB simulator
4 * Copyright (c) 2019 Yoshinori Sato
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2 or later, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
19 #include "qemu/osdep.h"
20 #include "qemu/cutils.h"
21 #include "qemu/error-report.h"
22 #include "qapi/error.h"
23 #include "qemu-common.h"
24 #include "cpu.h"
25 #include "hw/hw.h"
26 #include "hw/sysbus.h"
27 #include "hw/loader.h"
28 #include "hw/rx/rx62n.h"
29 #include "sysemu/sysemu.h"
30 #include "sysemu/qtest.h"
31 #include "sysemu/device_tree.h"
32 #include "hw/boards.h"
33 #include "qom/object.h"
35 /* Same address of GDB integrated simulator */
36 #define SDRAM_BASE EXT_CS_BASE
38 struct RxGdbSimMachineClass {
39 /*< private >*/
40 MachineClass parent_class;
41 /*< public >*/
42 const char *mcu_name;
43 uint32_t xtal_freq_hz;
45 typedef struct RxGdbSimMachineClass RxGdbSimMachineClass;
47 struct RxGdbSimMachineState {
48 /*< private >*/
49 MachineState parent_obj;
50 /*< public >*/
51 RX62NState mcu;
53 typedef struct RxGdbSimMachineState RxGdbSimMachineState;
55 #define TYPE_RX_GDBSIM_MACHINE MACHINE_TYPE_NAME("rx62n-common")
57 DECLARE_OBJ_CHECKERS(RxGdbSimMachineState, RxGdbSimMachineClass,
58 RX_GDBSIM_MACHINE, TYPE_RX_GDBSIM_MACHINE)
61 static void rx_load_image(RXCPU *cpu, const char *filename,
62 uint32_t start, uint32_t size)
64 static uint32_t extable[32];
65 long kernel_size;
66 int i;
68 kernel_size = load_image_targphys(filename, start, size);
69 if (kernel_size < 0) {
70 fprintf(stderr, "qemu: could not load kernel '%s'\n", filename);
71 exit(1);
73 cpu->env.pc = start;
75 /* setup exception trap trampoline */
76 /* linux kernel only works little-endian mode */
77 for (i = 0; i < ARRAY_SIZE(extable); i++) {
78 extable[i] = cpu_to_le32(0x10 + i * 4);
80 rom_add_blob_fixed("extable", extable, sizeof(extable), VECTOR_TABLE_BASE);
83 static void rx_gdbsim_init(MachineState *machine)
85 MachineClass *mc = MACHINE_GET_CLASS(machine);
86 RxGdbSimMachineState *s = RX_GDBSIM_MACHINE(machine);
87 RxGdbSimMachineClass *rxc = RX_GDBSIM_MACHINE_GET_CLASS(machine);
88 MemoryRegion *sysmem = get_system_memory();
89 const char *kernel_filename = machine->kernel_filename;
90 const char *dtb_filename = machine->dtb;
92 if (machine->ram_size < mc->default_ram_size) {
93 char *sz = size_to_str(mc->default_ram_size);
94 error_report("Invalid RAM size, should be more than %s", sz);
95 g_free(sz);
98 /* Allocate memory space */
99 memory_region_add_subregion(sysmem, SDRAM_BASE, machine->ram);
101 /* Initialize MCU */
102 object_initialize_child(OBJECT(machine), "mcu", &s->mcu, rxc->mcu_name);
103 object_property_set_link(OBJECT(&s->mcu), "main-bus", OBJECT(sysmem),
104 &error_abort);
105 object_property_set_uint(OBJECT(&s->mcu), "xtal-frequency-hz",
106 rxc->xtal_freq_hz, &error_abort);
107 object_property_set_bool(OBJECT(&s->mcu), "load-kernel",
108 kernel_filename != NULL, &error_abort);
110 if (!kernel_filename) {
111 if (machine->firmware) {
112 rom_add_file_fixed(machine->firmware, RX62N_CFLASH_BASE, 0);
113 } else if (!qtest_enabled()) {
114 error_report("No bios or kernel specified");
115 exit(1);
119 qdev_realize(DEVICE(&s->mcu), NULL, &error_abort);
121 /* Load kernel and dtb */
122 if (kernel_filename) {
123 ram_addr_t kernel_offset;
126 * The kernel image is loaded into
127 * the latter half of the SDRAM space.
129 kernel_offset = machine->ram_size / 2;
130 rx_load_image(RX_CPU(first_cpu), kernel_filename,
131 SDRAM_BASE + kernel_offset, kernel_offset);
132 if (dtb_filename) {
133 ram_addr_t dtb_offset;
134 int dtb_size;
135 g_autofree void *dtb = load_device_tree(dtb_filename, &dtb_size);
137 if (dtb == NULL) {
138 error_report("Couldn't open dtb file %s", dtb_filename);
139 exit(1);
141 if (machine->kernel_cmdline &&
142 qemu_fdt_setprop_string(dtb, "/chosen", "bootargs",
143 machine->kernel_cmdline) < 0) {
144 error_report("Couldn't set /chosen/bootargs");
145 exit(1);
147 /* DTB is located at the end of SDRAM space. */
148 dtb_offset = machine->ram_size - dtb_size;
149 rom_add_blob_fixed("dtb", dtb, dtb_size,
150 SDRAM_BASE + dtb_offset);
151 /* Set dtb address to R1 */
152 RX_CPU(first_cpu)->env.regs[1] = SDRAM_BASE + dtb_offset;
157 static void rx_gdbsim_class_init(ObjectClass *oc, void *data)
159 MachineClass *mc = MACHINE_CLASS(oc);
161 mc->init = rx_gdbsim_init;
162 mc->default_cpu_type = TYPE_RX62N_CPU;
163 mc->default_ram_size = 16 * MiB;
164 mc->default_ram_id = "ext-sdram";
167 static void rx62n7_class_init(ObjectClass *oc, void *data)
169 RxGdbSimMachineClass *rxc = RX_GDBSIM_MACHINE_CLASS(oc);
170 MachineClass *mc = MACHINE_CLASS(oc);
172 rxc->mcu_name = TYPE_R5F562N7_MCU;
173 rxc->xtal_freq_hz = 12 * 1000 * 1000;
174 mc->desc = "gdb simulator (R5F562N7 MCU and external RAM)";
177 static void rx62n8_class_init(ObjectClass *oc, void *data)
179 RxGdbSimMachineClass *rxc = RX_GDBSIM_MACHINE_CLASS(oc);
180 MachineClass *mc = MACHINE_CLASS(oc);
182 rxc->mcu_name = TYPE_R5F562N8_MCU;
183 rxc->xtal_freq_hz = 12 * 1000 * 1000;
184 mc->desc = "gdb simulator (R5F562N8 MCU and external RAM)";
187 static const TypeInfo rx_gdbsim_types[] = {
189 .name = MACHINE_TYPE_NAME("gdbsim-r5f562n7"),
190 .parent = TYPE_RX_GDBSIM_MACHINE,
191 .class_init = rx62n7_class_init,
192 }, {
193 .name = MACHINE_TYPE_NAME("gdbsim-r5f562n8"),
194 .parent = TYPE_RX_GDBSIM_MACHINE,
195 .class_init = rx62n8_class_init,
196 }, {
197 .name = TYPE_RX_GDBSIM_MACHINE,
198 .parent = TYPE_MACHINE,
199 .instance_size = sizeof(RxGdbSimMachineState),
200 .class_size = sizeof(RxGdbSimMachineClass),
201 .class_init = rx_gdbsim_class_init,
202 .abstract = true,
206 DEFINE_TYPES(rx_gdbsim_types)