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1/*
2 * SmartFusion2 SoC emulation.
3 *
05b7374a 4 * Copyright (c) 2017-2020 Subbaraya Sundeep <sundeep.lkml@gmail.com>
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5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25#include "qemu/osdep.h"
fc6b3cf9 26#include "qemu/units.h"
ebc1fbb4 27#include "qapi/error.h"
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28#include "exec/address-spaces.h"
29#include "hw/char/serial.h"
64552b6b 30#include "hw/irq.h"
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31#include "hw/arm/msf2-soc.h"
32#include "hw/misc/unimp.h"
54d31236 33#include "sysemu/runstate.h"
46517dd4 34#include "sysemu/sysemu.h"
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35
36#define MSF2_TIMER_BASE 0x40004000
37#define MSF2_SYSREG_BASE 0x40038000
05b7374a 38#define MSF2_EMAC_BASE 0x40041000
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39
40#define ENVM_BASE_ADDRESS 0x60000000
41
42#define SRAM_BASE_ADDRESS 0x20000000
43
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44#define MSF2_EMAC_IRQ 12
45
d23b6caa 46#define MSF2_ENVM_MAX_SIZE (512 * KiB)
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47
48/*
49 * eSRAM max size is 80k without SECDED(Single error correction and
50 * dual error detection) feature and 64k with SECDED.
51 * We do not support SECDED now.
52 */
d23b6caa 53#define MSF2_ESRAM_MAX_SIZE (80 * KiB)
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54
55static const uint32_t spi_addr[MSF2_NUM_SPIS] = { 0x40001000 , 0x40011000 };
56static const uint32_t uart_addr[MSF2_NUM_UARTS] = { 0x40000000 , 0x40010000 };
57
58static const int spi_irq[MSF2_NUM_SPIS] = { 2, 3 };
59static const int uart_irq[MSF2_NUM_UARTS] = { 10, 11 };
60static const int timer_irq[MSF2_NUM_TIMERS] = { 14, 15 };
61
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62static void do_sys_reset(void *opaque, int n, int level)
63{
64 if (level) {
65 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
66 }
67}
68
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69static void m2sxxx_soc_initfn(Object *obj)
70{
71 MSF2State *s = MSF2_SOC(obj);
72 int i;
73
db873cc5 74 object_initialize_child(obj, "armv7m", &s->armv7m, TYPE_ARMV7M);
ebc1fbb4 75
db873cc5 76 object_initialize_child(obj, "sysreg", &s->sysreg, TYPE_MSF2_SYSREG);
ebc1fbb4 77
db873cc5 78 object_initialize_child(obj, "timer", &s->timer, TYPE_MSS_TIMER);
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79
80 for (i = 0; i < MSF2_NUM_SPIS; i++) {
db873cc5 81 object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_MSS_SPI);
ebc1fbb4 82 }
05b7374a 83
db873cc5 84 object_initialize_child(obj, "emac", &s->emac, TYPE_MSS_EMAC);
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85 if (nd_table[0].used) {
86 qemu_check_nic_model(&nd_table[0], TYPE_MSS_EMAC);
87 qdev_set_nic_properties(DEVICE(&s->emac), &nd_table[0]);
88 }
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89}
90
91static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
92{
93 MSF2State *s = MSF2_SOC(dev_soc);
94 DeviceState *dev, *armv7m;
95 SysBusDevice *busdev;
96 Error *err = NULL;
97 int i;
98
99 MemoryRegion *system_memory = get_system_memory();
100 MemoryRegion *nvm = g_new(MemoryRegion, 1);
101 MemoryRegion *nvm_alias = g_new(MemoryRegion, 1);
102 MemoryRegion *sram = g_new(MemoryRegion, 1);
103
32b9523a 104 memory_region_init_rom(nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size,
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105 &error_fatal);
106 /*
107 * On power-on, the eNVM region 0x60000000 is automatically
108 * remapped to the Cortex-M3 processor executable region
109 * start address (0x0). We do not support remapping other eNVM,
110 * eSRAM and DDR regions by guest(via Sysreg) currently.
111 */
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112 memory_region_init_alias(nvm_alias, OBJECT(dev_soc), "MSF2.eNVM", nvm, 0,
113 s->envm_size);
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114
115 memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, nvm);
116 memory_region_add_subregion(system_memory, 0, nvm_alias);
117
118 memory_region_init_ram(sram, NULL, "MSF2.eSRAM", s->esram_size,
119 &error_fatal);
120 memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram);
121
122 armv7m = DEVICE(&s->armv7m);
123 qdev_prop_set_uint32(armv7m, "num-irq", 81);
124 qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
a1c5a062 125 qdev_prop_set_bit(armv7m, "enable-bitband", true);
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126 object_property_set_link(OBJECT(&s->armv7m), OBJECT(get_system_memory()),
127 "memory", &error_abort);
db873cc5 128 sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), &err);
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129 if (err != NULL) {
130 error_propagate(errp, err);
131 return;
132 }
133
134 if (!s->m3clk) {
135 error_setg(errp, "Invalid m3clk value");
136 error_append_hint(errp, "m3clk can not be zero\n");
137 return;
138 }
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139
140 qdev_connect_gpio_out_named(DEVICE(&s->armv7m.nvic), "SYSRESETREQ", 0,
141 qemu_allocate_irq(&do_sys_reset, NULL, 0));
142
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143 system_clock_scale = NANOSECONDS_PER_SECOND / s->m3clk;
144
145 for (i = 0; i < MSF2_NUM_UARTS; i++) {
9bca0edb 146 if (serial_hd(i)) {
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147 serial_mm_init(get_system_memory(), uart_addr[i], 2,
148 qdev_get_gpio_in(armv7m, uart_irq[i]),
9bca0edb 149 115200, serial_hd(i), DEVICE_NATIVE_ENDIAN);
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150 }
151 }
152
153 dev = DEVICE(&s->timer);
154 /* APB0 clock is the timer input clock */
155 qdev_prop_set_uint32(dev, "clock-frequency", s->m3clk / s->apb0div);
db873cc5 156 sysbus_realize(SYS_BUS_DEVICE(&s->timer), &err);
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157 if (err != NULL) {
158 error_propagate(errp, err);
159 return;
160 }
161 busdev = SYS_BUS_DEVICE(dev);
162 sysbus_mmio_map(busdev, 0, MSF2_TIMER_BASE);
163 sysbus_connect_irq(busdev, 0,
164 qdev_get_gpio_in(armv7m, timer_irq[0]));
165 sysbus_connect_irq(busdev, 1,
166 qdev_get_gpio_in(armv7m, timer_irq[1]));
167
168 dev = DEVICE(&s->sysreg);
169 qdev_prop_set_uint32(dev, "apb0divisor", s->apb0div);
170 qdev_prop_set_uint32(dev, "apb1divisor", s->apb1div);
db873cc5 171 sysbus_realize(SYS_BUS_DEVICE(&s->sysreg), &err);
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172 if (err != NULL) {
173 error_propagate(errp, err);
174 return;
175 }
176 busdev = SYS_BUS_DEVICE(dev);
177 sysbus_mmio_map(busdev, 0, MSF2_SYSREG_BASE);
178
179 for (i = 0; i < MSF2_NUM_SPIS; i++) {
180 gchar *bus_name;
181
db873cc5 182 sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), &err);
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183 if (err != NULL) {
184 error_propagate(errp, err);
185 return;
186 }
187
188 sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi[i]), 0, spi_addr[i]);
189 sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi[i]), 0,
190 qdev_get_gpio_in(armv7m, spi_irq[i]));
191
192 /* Alias controller SPI bus to the SoC itself */
193 bus_name = g_strdup_printf("spi%d", i);
194 object_property_add_alias(OBJECT(s), bus_name,
d2623129 195 OBJECT(&s->spi[i]), "spi");
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196 g_free(bus_name);
197 }
198
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199 dev = DEVICE(&s->emac);
200 object_property_set_link(OBJECT(&s->emac), OBJECT(get_system_memory()),
201 "ahb-bus", &error_abort);
db873cc5 202 sysbus_realize(SYS_BUS_DEVICE(&s->emac), &err);
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203 if (err != NULL) {
204 error_propagate(errp, err);
205 return;
206 }
207 busdev = SYS_BUS_DEVICE(dev);
208 sysbus_mmio_map(busdev, 0, MSF2_EMAC_BASE);
209 sysbus_connect_irq(busdev, 0,
210 qdev_get_gpio_in(armv7m, MSF2_EMAC_IRQ));
211
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212 /* Below devices are not modelled yet. */
213 create_unimplemented_device("i2c_0", 0x40002000, 0x1000);
214 create_unimplemented_device("dma", 0x40003000, 0x1000);
215 create_unimplemented_device("watchdog", 0x40005000, 0x1000);
216 create_unimplemented_device("i2c_1", 0x40012000, 0x1000);
217 create_unimplemented_device("gpio", 0x40013000, 0x1000);
218 create_unimplemented_device("hs-dma", 0x40014000, 0x1000);
219 create_unimplemented_device("can", 0x40015000, 0x1000);
220 create_unimplemented_device("rtc", 0x40017000, 0x1000);
221 create_unimplemented_device("apb_config", 0x40020000, 0x10000);
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222 create_unimplemented_device("usb", 0x40043000, 0x1000);
223}
224
225static Property m2sxxx_soc_properties[] = {
226 /*
227 * part name specifies the type of SmartFusion2 device variant(this
228 * property is for information purpose only.
229 */
230 DEFINE_PROP_STRING("cpu-type", MSF2State, cpu_type),
231 DEFINE_PROP_STRING("part-name", MSF2State, part_name),
232 DEFINE_PROP_UINT64("eNVM-size", MSF2State, envm_size, MSF2_ENVM_MAX_SIZE),
233 DEFINE_PROP_UINT64("eSRAM-size", MSF2State, esram_size,
234 MSF2_ESRAM_MAX_SIZE),
235 /* Libero GUI shows 100Mhz as default for clocks */
236 DEFINE_PROP_UINT32("m3clk", MSF2State, m3clk, 100 * 1000000),
237 /* default divisors in Libero GUI */
238 DEFINE_PROP_UINT8("apb0div", MSF2State, apb0div, 2),
239 DEFINE_PROP_UINT8("apb1div", MSF2State, apb1div, 2),
240 DEFINE_PROP_END_OF_LIST(),
241};
242
243static void m2sxxx_soc_class_init(ObjectClass *klass, void *data)
244{
245 DeviceClass *dc = DEVICE_CLASS(klass);
246
247 dc->realize = m2sxxx_soc_realize;
4f67d30b 248 device_class_set_props(dc, m2sxxx_soc_properties);
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249}
250
251static const TypeInfo m2sxxx_soc_info = {
252 .name = TYPE_MSF2_SOC,
253 .parent = TYPE_SYS_BUS_DEVICE,
254 .instance_size = sizeof(MSF2State),
255 .instance_init = m2sxxx_soc_initfn,
256 .class_init = m2sxxx_soc_class_init,
257};
258
259static void m2sxxx_soc_types(void)
260{
261 type_register_static(&m2sxxx_soc_info);
262}
263
264type_init(m2sxxx_soc_types)