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ebc1fbb4 SS |
1 | /* |
2 | * SmartFusion2 SoC emulation. | |
3 | * | |
4 | * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com> | |
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" |
ebc1fbb4 SS |
28 | #include "exec/address-spaces.h" |
29 | #include "hw/char/serial.h" | |
30 | #include "hw/boards.h" | |
ebc1fbb4 SS |
31 | #include "hw/arm/msf2-soc.h" |
32 | #include "hw/misc/unimp.h" | |
33 | ||
34 | #define MSF2_TIMER_BASE 0x40004000 | |
35 | #define MSF2_SYSREG_BASE 0x40038000 | |
36 | ||
37 | #define ENVM_BASE_ADDRESS 0x60000000 | |
38 | ||
39 | #define SRAM_BASE_ADDRESS 0x20000000 | |
40 | ||
d23b6caa | 41 | #define MSF2_ENVM_MAX_SIZE (512 * KiB) |
ebc1fbb4 SS |
42 | |
43 | /* | |
44 | * eSRAM max size is 80k without SECDED(Single error correction and | |
45 | * dual error detection) feature and 64k with SECDED. | |
46 | * We do not support SECDED now. | |
47 | */ | |
d23b6caa | 48 | #define MSF2_ESRAM_MAX_SIZE (80 * KiB) |
ebc1fbb4 SS |
49 | |
50 | static const uint32_t spi_addr[MSF2_NUM_SPIS] = { 0x40001000 , 0x40011000 }; | |
51 | static const uint32_t uart_addr[MSF2_NUM_UARTS] = { 0x40000000 , 0x40010000 }; | |
52 | ||
53 | static const int spi_irq[MSF2_NUM_SPIS] = { 2, 3 }; | |
54 | static const int uart_irq[MSF2_NUM_UARTS] = { 10, 11 }; | |
55 | static const int timer_irq[MSF2_NUM_TIMERS] = { 14, 15 }; | |
56 | ||
db7b98c6 SS |
57 | static void do_sys_reset(void *opaque, int n, int level) |
58 | { | |
59 | if (level) { | |
60 | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); | |
61 | } | |
62 | } | |
63 | ||
ebc1fbb4 SS |
64 | static void m2sxxx_soc_initfn(Object *obj) |
65 | { | |
66 | MSF2State *s = MSF2_SOC(obj); | |
67 | int i; | |
68 | ||
d473a030 TH |
69 | sysbus_init_child_obj(obj, "armv7m", &s->armv7m, sizeof(s->armv7m), |
70 | TYPE_ARMV7M); | |
ebc1fbb4 | 71 | |
d473a030 TH |
72 | sysbus_init_child_obj(obj, "sysreg", &s->sysreg, sizeof(s->sysreg), |
73 | TYPE_MSF2_SYSREG); | |
ebc1fbb4 | 74 | |
d473a030 TH |
75 | sysbus_init_child_obj(obj, "timer", &s->timer, sizeof(s->timer), |
76 | TYPE_MSS_TIMER); | |
ebc1fbb4 SS |
77 | |
78 | for (i = 0; i < MSF2_NUM_SPIS; i++) { | |
d473a030 | 79 | sysbus_init_child_obj(obj, "spi[*]", &s->spi[i], sizeof(s->spi[i]), |
ebc1fbb4 | 80 | TYPE_MSS_SPI); |
ebc1fbb4 SS |
81 | } |
82 | } | |
83 | ||
84 | static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp) | |
85 | { | |
86 | MSF2State *s = MSF2_SOC(dev_soc); | |
87 | DeviceState *dev, *armv7m; | |
88 | SysBusDevice *busdev; | |
89 | Error *err = NULL; | |
90 | int i; | |
91 | ||
92 | MemoryRegion *system_memory = get_system_memory(); | |
93 | MemoryRegion *nvm = g_new(MemoryRegion, 1); | |
94 | MemoryRegion *nvm_alias = g_new(MemoryRegion, 1); | |
95 | MemoryRegion *sram = g_new(MemoryRegion, 1); | |
96 | ||
97 | memory_region_init_rom(nvm, NULL, "MSF2.eNVM", s->envm_size, | |
98 | &error_fatal); | |
99 | /* | |
100 | * On power-on, the eNVM region 0x60000000 is automatically | |
101 | * remapped to the Cortex-M3 processor executable region | |
102 | * start address (0x0). We do not support remapping other eNVM, | |
103 | * eSRAM and DDR regions by guest(via Sysreg) currently. | |
104 | */ | |
105 | memory_region_init_alias(nvm_alias, NULL, "MSF2.eNVM", | |
106 | nvm, 0, s->envm_size); | |
107 | ||
108 | memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, nvm); | |
109 | memory_region_add_subregion(system_memory, 0, nvm_alias); | |
110 | ||
111 | memory_region_init_ram(sram, NULL, "MSF2.eSRAM", s->esram_size, | |
112 | &error_fatal); | |
113 | memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram); | |
114 | ||
115 | armv7m = DEVICE(&s->armv7m); | |
116 | qdev_prop_set_uint32(armv7m, "num-irq", 81); | |
117 | qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type); | |
a1c5a062 | 118 | qdev_prop_set_bit(armv7m, "enable-bitband", true); |
ebc1fbb4 SS |
119 | object_property_set_link(OBJECT(&s->armv7m), OBJECT(get_system_memory()), |
120 | "memory", &error_abort); | |
121 | object_property_set_bool(OBJECT(&s->armv7m), true, "realized", &err); | |
122 | if (err != NULL) { | |
123 | error_propagate(errp, err); | |
124 | return; | |
125 | } | |
126 | ||
127 | if (!s->m3clk) { | |
128 | error_setg(errp, "Invalid m3clk value"); | |
129 | error_append_hint(errp, "m3clk can not be zero\n"); | |
130 | return; | |
131 | } | |
db7b98c6 SS |
132 | |
133 | qdev_connect_gpio_out_named(DEVICE(&s->armv7m.nvic), "SYSRESETREQ", 0, | |
134 | qemu_allocate_irq(&do_sys_reset, NULL, 0)); | |
135 | ||
ebc1fbb4 SS |
136 | system_clock_scale = NANOSECONDS_PER_SECOND / s->m3clk; |
137 | ||
138 | for (i = 0; i < MSF2_NUM_UARTS; i++) { | |
9bca0edb | 139 | if (serial_hd(i)) { |
ebc1fbb4 SS |
140 | serial_mm_init(get_system_memory(), uart_addr[i], 2, |
141 | qdev_get_gpio_in(armv7m, uart_irq[i]), | |
9bca0edb | 142 | 115200, serial_hd(i), DEVICE_NATIVE_ENDIAN); |
ebc1fbb4 SS |
143 | } |
144 | } | |
145 | ||
146 | dev = DEVICE(&s->timer); | |
147 | /* APB0 clock is the timer input clock */ | |
148 | qdev_prop_set_uint32(dev, "clock-frequency", s->m3clk / s->apb0div); | |
149 | object_property_set_bool(OBJECT(&s->timer), true, "realized", &err); | |
150 | if (err != NULL) { | |
151 | error_propagate(errp, err); | |
152 | return; | |
153 | } | |
154 | busdev = SYS_BUS_DEVICE(dev); | |
155 | sysbus_mmio_map(busdev, 0, MSF2_TIMER_BASE); | |
156 | sysbus_connect_irq(busdev, 0, | |
157 | qdev_get_gpio_in(armv7m, timer_irq[0])); | |
158 | sysbus_connect_irq(busdev, 1, | |
159 | qdev_get_gpio_in(armv7m, timer_irq[1])); | |
160 | ||
161 | dev = DEVICE(&s->sysreg); | |
162 | qdev_prop_set_uint32(dev, "apb0divisor", s->apb0div); | |
163 | qdev_prop_set_uint32(dev, "apb1divisor", s->apb1div); | |
164 | object_property_set_bool(OBJECT(&s->sysreg), true, "realized", &err); | |
165 | if (err != NULL) { | |
166 | error_propagate(errp, err); | |
167 | return; | |
168 | } | |
169 | busdev = SYS_BUS_DEVICE(dev); | |
170 | sysbus_mmio_map(busdev, 0, MSF2_SYSREG_BASE); | |
171 | ||
172 | for (i = 0; i < MSF2_NUM_SPIS; i++) { | |
173 | gchar *bus_name; | |
174 | ||
175 | object_property_set_bool(OBJECT(&s->spi[i]), true, "realized", &err); | |
176 | if (err != NULL) { | |
177 | error_propagate(errp, err); | |
178 | return; | |
179 | } | |
180 | ||
181 | sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi[i]), 0, spi_addr[i]); | |
182 | sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi[i]), 0, | |
183 | qdev_get_gpio_in(armv7m, spi_irq[i])); | |
184 | ||
185 | /* Alias controller SPI bus to the SoC itself */ | |
186 | bus_name = g_strdup_printf("spi%d", i); | |
187 | object_property_add_alias(OBJECT(s), bus_name, | |
188 | OBJECT(&s->spi[i]), "spi", | |
189 | &error_abort); | |
190 | g_free(bus_name); | |
191 | } | |
192 | ||
193 | /* Below devices are not modelled yet. */ | |
194 | create_unimplemented_device("i2c_0", 0x40002000, 0x1000); | |
195 | create_unimplemented_device("dma", 0x40003000, 0x1000); | |
196 | create_unimplemented_device("watchdog", 0x40005000, 0x1000); | |
197 | create_unimplemented_device("i2c_1", 0x40012000, 0x1000); | |
198 | create_unimplemented_device("gpio", 0x40013000, 0x1000); | |
199 | create_unimplemented_device("hs-dma", 0x40014000, 0x1000); | |
200 | create_unimplemented_device("can", 0x40015000, 0x1000); | |
201 | create_unimplemented_device("rtc", 0x40017000, 0x1000); | |
202 | create_unimplemented_device("apb_config", 0x40020000, 0x10000); | |
203 | create_unimplemented_device("emac", 0x40041000, 0x1000); | |
204 | create_unimplemented_device("usb", 0x40043000, 0x1000); | |
205 | } | |
206 | ||
207 | static Property m2sxxx_soc_properties[] = { | |
208 | /* | |
209 | * part name specifies the type of SmartFusion2 device variant(this | |
210 | * property is for information purpose only. | |
211 | */ | |
212 | DEFINE_PROP_STRING("cpu-type", MSF2State, cpu_type), | |
213 | DEFINE_PROP_STRING("part-name", MSF2State, part_name), | |
214 | DEFINE_PROP_UINT64("eNVM-size", MSF2State, envm_size, MSF2_ENVM_MAX_SIZE), | |
215 | DEFINE_PROP_UINT64("eSRAM-size", MSF2State, esram_size, | |
216 | MSF2_ESRAM_MAX_SIZE), | |
217 | /* Libero GUI shows 100Mhz as default for clocks */ | |
218 | DEFINE_PROP_UINT32("m3clk", MSF2State, m3clk, 100 * 1000000), | |
219 | /* default divisors in Libero GUI */ | |
220 | DEFINE_PROP_UINT8("apb0div", MSF2State, apb0div, 2), | |
221 | DEFINE_PROP_UINT8("apb1div", MSF2State, apb1div, 2), | |
222 | DEFINE_PROP_END_OF_LIST(), | |
223 | }; | |
224 | ||
225 | static void m2sxxx_soc_class_init(ObjectClass *klass, void *data) | |
226 | { | |
227 | DeviceClass *dc = DEVICE_CLASS(klass); | |
228 | ||
229 | dc->realize = m2sxxx_soc_realize; | |
230 | dc->props = m2sxxx_soc_properties; | |
231 | } | |
232 | ||
233 | static const TypeInfo m2sxxx_soc_info = { | |
234 | .name = TYPE_MSF2_SOC, | |
235 | .parent = TYPE_SYS_BUS_DEVICE, | |
236 | .instance_size = sizeof(MSF2State), | |
237 | .instance_init = m2sxxx_soc_initfn, | |
238 | .class_init = m2sxxx_soc_class_init, | |
239 | }; | |
240 | ||
241 | static void m2sxxx_soc_types(void) | |
242 | { | |
243 | type_register_static(&m2sxxx_soc_info); | |
244 | } | |
245 | ||
246 | type_init(m2sxxx_soc_types) |