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10c144e2 EI |
1 | /* |
2 | * QEMU model for the AXIS devboard 88. | |
3 | * | |
4 | * Copyright (c) 2009 Edgar E. Iglesias, Axis Communications AB. | |
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 | */ | |
4b816985 | 24 | |
83c9f4ca | 25 | #include "hw/sysbus.h" |
1422e32d | 26 | #include "net/net.h" |
0d09e41a | 27 | #include "hw/block/flash.h" |
83c9f4ca | 28 | #include "hw/boards.h" |
0d09e41a | 29 | #include "hw/cris/etraxfs.h" |
83c9f4ca | 30 | #include "hw/loader.h" |
ca20cf32 | 31 | #include "elf.h" |
47b43a1f | 32 | #include "boot.h" |
9c17d615 | 33 | #include "sysemu/blockdev.h" |
022c62cb | 34 | #include "exec/address-spaces.h" |
5efe843a | 35 | #include "sysemu/qtest.h" |
10c144e2 EI |
36 | |
37 | #define D(x) | |
38 | #define DNAND(x) | |
39 | ||
40 | struct nand_state_t | |
41 | { | |
d4220389 | 42 | DeviceState *nand; |
838335ec | 43 | MemoryRegion iomem; |
10c144e2 EI |
44 | unsigned int rdy:1; |
45 | unsigned int ale:1; | |
46 | unsigned int cle:1; | |
47 | unsigned int ce:1; | |
48 | }; | |
49 | ||
50 | static struct nand_state_t nand_state; | |
a8170e5e | 51 | static uint64_t nand_read(void *opaque, hwaddr addr, unsigned size) |
10c144e2 EI |
52 | { |
53 | struct nand_state_t *s = opaque; | |
54 | uint32_t r; | |
55 | int rdy; | |
56 | ||
57 | r = nand_getio(s->nand); | |
58 | nand_getpins(s->nand, &rdy); | |
59 | s->rdy = rdy; | |
60 | ||
61 | DNAND(printf("%s addr=%x r=%x\n", __func__, addr, r)); | |
62 | return r; | |
63 | } | |
64 | ||
65 | static void | |
a8170e5e | 66 | nand_write(void *opaque, hwaddr addr, uint64_t value, |
838335ec | 67 | unsigned size) |
10c144e2 EI |
68 | { |
69 | struct nand_state_t *s = opaque; | |
70 | int rdy; | |
71 | ||
838335ec | 72 | DNAND(printf("%s addr=%x v=%x\n", __func__, addr, (unsigned)value)); |
10c144e2 EI |
73 | nand_setpins(s->nand, s->cle, s->ale, s->ce, 1, 0); |
74 | nand_setio(s->nand, value); | |
75 | nand_getpins(s->nand, &rdy); | |
76 | s->rdy = rdy; | |
77 | } | |
78 | ||
838335ec AK |
79 | static const MemoryRegionOps nand_ops = { |
80 | .read = nand_read, | |
81 | .write = nand_write, | |
82 | .endianness = DEVICE_NATIVE_ENDIAN, | |
10c144e2 EI |
83 | }; |
84 | ||
4a1e6bea EI |
85 | struct tempsensor_t |
86 | { | |
87 | unsigned int shiftreg; | |
88 | unsigned int count; | |
89 | enum { | |
90 | ST_OUT, ST_IN, ST_Z | |
91 | } state; | |
92 | ||
93 | uint16_t regs[3]; | |
94 | }; | |
95 | ||
96 | static void tempsensor_clkedge(struct tempsensor_t *s, | |
97 | unsigned int clk, unsigned int data_in) | |
98 | { | |
99 | D(printf("%s clk=%d state=%d sr=%x\n", __func__, | |
100 | clk, s->state, s->shiftreg)); | |
101 | if (s->count == 0) { | |
102 | s->count = 16; | |
103 | s->state = ST_OUT; | |
104 | } | |
105 | switch (s->state) { | |
106 | case ST_OUT: | |
107 | /* Output reg is clocked at negedge. */ | |
108 | if (!clk) { | |
109 | s->count--; | |
110 | s->shiftreg <<= 1; | |
111 | if (s->count == 0) { | |
112 | s->shiftreg = 0; | |
113 | s->state = ST_IN; | |
114 | s->count = 16; | |
115 | } | |
116 | } | |
117 | break; | |
118 | case ST_Z: | |
119 | if (clk) { | |
120 | s->count--; | |
121 | if (s->count == 0) { | |
122 | s->shiftreg = 0; | |
123 | s->state = ST_OUT; | |
124 | s->count = 16; | |
125 | } | |
126 | } | |
127 | break; | |
128 | case ST_IN: | |
129 | /* Indata is sampled at posedge. */ | |
130 | if (clk) { | |
131 | s->count--; | |
132 | s->shiftreg <<= 1; | |
133 | s->shiftreg |= data_in & 1; | |
134 | if (s->count == 0) { | |
135 | D(printf("%s cfgreg=%x\n", __func__, s->shiftreg)); | |
136 | s->regs[0] = s->shiftreg; | |
137 | s->state = ST_OUT; | |
138 | s->count = 16; | |
139 | ||
140 | if ((s->regs[0] & 0xff) == 0) { | |
141 | /* 25 degrees celcius. */ | |
142 | s->shiftreg = 0x0b9f; | |
143 | } else if ((s->regs[0] & 0xff) == 0xff) { | |
144 | /* Sensor ID, 0x8100 LM70. */ | |
145 | s->shiftreg = 0x8100; | |
146 | } else | |
147 | printf("Invalid tempsens state %x\n", s->regs[0]); | |
148 | } | |
149 | } | |
150 | break; | |
151 | } | |
152 | } | |
153 | ||
154 | ||
155 | #define RW_PA_DOUT 0x00 | |
156 | #define R_PA_DIN 0x01 | |
157 | #define RW_PA_OE 0x02 | |
158 | #define RW_PD_DOUT 0x10 | |
159 | #define R_PD_DIN 0x11 | |
160 | #define RW_PD_OE 0x12 | |
161 | ||
162 | static struct gpio_state_t | |
10c144e2 | 163 | { |
838335ec | 164 | MemoryRegion iomem; |
10c144e2 | 165 | struct nand_state_t *nand; |
4a1e6bea | 166 | struct tempsensor_t tempsensor; |
10c144e2 EI |
167 | uint32_t regs[0x5c / 4]; |
168 | } gpio_state; | |
169 | ||
a8170e5e | 170 | static uint64_t gpio_read(void *opaque, hwaddr addr, unsigned size) |
10c144e2 EI |
171 | { |
172 | struct gpio_state_t *s = opaque; | |
173 | uint32_t r = 0; | |
174 | ||
175 | addr >>= 2; | |
176 | switch (addr) | |
177 | { | |
178 | case R_PA_DIN: | |
179 | r = s->regs[RW_PA_DOUT] & s->regs[RW_PA_OE]; | |
180 | ||
181 | /* Encode pins from the nand. */ | |
182 | r |= s->nand->rdy << 7; | |
183 | break; | |
4a1e6bea EI |
184 | case R_PD_DIN: |
185 | r = s->regs[RW_PD_DOUT] & s->regs[RW_PD_OE]; | |
186 | ||
187 | /* Encode temp sensor pins. */ | |
188 | r |= (!!(s->tempsensor.shiftreg & 0x10000)) << 4; | |
189 | break; | |
190 | ||
10c144e2 EI |
191 | default: |
192 | r = s->regs[addr]; | |
193 | break; | |
194 | } | |
195 | return r; | |
196 | D(printf("%s %x=%x\n", __func__, addr, r)); | |
197 | } | |
198 | ||
a8170e5e | 199 | static void gpio_write(void *opaque, hwaddr addr, uint64_t value, |
838335ec | 200 | unsigned size) |
10c144e2 EI |
201 | { |
202 | struct gpio_state_t *s = opaque; | |
838335ec | 203 | D(printf("%s %x=%x\n", __func__, addr, (unsigned)value)); |
10c144e2 EI |
204 | |
205 | addr >>= 2; | |
206 | switch (addr) | |
207 | { | |
208 | case RW_PA_DOUT: | |
209 | /* Decode nand pins. */ | |
210 | s->nand->ale = !!(value & (1 << 6)); | |
211 | s->nand->cle = !!(value & (1 << 5)); | |
212 | s->nand->ce = !!(value & (1 << 4)); | |
213 | ||
214 | s->regs[addr] = value; | |
215 | break; | |
4a1e6bea EI |
216 | |
217 | case RW_PD_DOUT: | |
218 | /* Temp sensor clk. */ | |
219 | if ((s->regs[addr] ^ value) & 2) | |
220 | tempsensor_clkedge(&s->tempsensor, !!(value & 2), | |
221 | !!(value & 16)); | |
222 | s->regs[addr] = value; | |
223 | break; | |
224 | ||
10c144e2 EI |
225 | default: |
226 | s->regs[addr] = value; | |
227 | break; | |
228 | } | |
229 | } | |
230 | ||
838335ec AK |
231 | static const MemoryRegionOps gpio_ops = { |
232 | .read = gpio_read, | |
233 | .write = gpio_write, | |
234 | .endianness = DEVICE_NATIVE_ENDIAN, | |
235 | .valid = { | |
236 | .min_access_size = 4, | |
237 | .max_access_size = 4, | |
238 | }, | |
10c144e2 EI |
239 | }; |
240 | ||
241 | #define INTMEM_SIZE (128 * 1024) | |
242 | ||
77d4f95e | 243 | static struct cris_load_info li; |
409dbce5 | 244 | |
10c144e2 | 245 | static |
5f072e1f | 246 | void axisdev88_init(QEMUMachineInitArgs *args) |
10c144e2 | 247 | { |
5f072e1f EH |
248 | ram_addr_t ram_size = args->ram_size; |
249 | const char *cpu_model = args->cpu_model; | |
250 | const char *kernel_filename = args->kernel_filename; | |
251 | const char *kernel_cmdline = args->kernel_cmdline; | |
ddeb9ae5 | 252 | CRISCPU *cpu; |
fc9bb176 | 253 | CPUCRISState *env; |
fd6dc90b EI |
254 | DeviceState *dev; |
255 | SysBusDevice *s; | |
522f253c | 256 | DriveInfo *nand; |
4a6da670 | 257 | qemu_irq irq[30], nmi[2]; |
10c144e2 | 258 | void *etraxfs_dmac; |
1da005b3 | 259 | struct etraxfs_dma_client *dma_eth; |
10c144e2 | 260 | int i; |
b0e3d5ac AK |
261 | MemoryRegion *address_space_mem = get_system_memory(); |
262 | MemoryRegion *phys_ram = g_new(MemoryRegion, 1); | |
263 | MemoryRegion *phys_intmem = g_new(MemoryRegion, 1); | |
10c144e2 EI |
264 | |
265 | /* init CPUs */ | |
266 | if (cpu_model == NULL) { | |
267 | cpu_model = "crisv32"; | |
268 | } | |
ddeb9ae5 AF |
269 | cpu = cpu_cris_init(cpu_model); |
270 | env = &cpu->env; | |
10c144e2 EI |
271 | |
272 | /* allocate RAM */ | |
2c9b15ca | 273 | memory_region_init_ram(phys_ram, NULL, "axisdev88.ram", ram_size); |
c5705a77 | 274 | vmstate_register_ram_global(phys_ram); |
b0e3d5ac | 275 | memory_region_add_subregion(address_space_mem, 0x40000000, phys_ram); |
10c144e2 EI |
276 | |
277 | /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the | |
278 | internal memory. */ | |
2c9b15ca | 279 | memory_region_init_ram(phys_intmem, NULL, "axisdev88.chipram", INTMEM_SIZE); |
c5705a77 | 280 | vmstate_register_ram_global(phys_intmem); |
b0e3d5ac | 281 | memory_region_add_subregion(address_space_mem, 0x38000000, phys_intmem); |
10c144e2 EI |
282 | |
283 | /* Attach a NAND flash to CS1. */ | |
522f253c PM |
284 | nand = drive_get(IF_MTD, 0, 0); |
285 | nand_state.nand = nand_init(nand ? nand->bdrv : NULL, | |
286 | NAND_MFR_STMICRO, 0x39); | |
2c9b15ca | 287 | memory_region_init_io(&nand_state.iomem, NULL, &nand_ops, &nand_state, |
838335ec AK |
288 | "nand", 0x05000000); |
289 | memory_region_add_subregion(address_space_mem, 0x10000000, | |
290 | &nand_state.iomem); | |
10c144e2 EI |
291 | |
292 | gpio_state.nand = &nand_state; | |
2c9b15ca | 293 | memory_region_init_io(&gpio_state.iomem, NULL, &gpio_ops, &gpio_state, |
838335ec AK |
294 | "gpio", 0x5c); |
295 | memory_region_add_subregion(address_space_mem, 0x3001a000, | |
296 | &gpio_state.iomem); | |
10c144e2 EI |
297 | |
298 | ||
fd6dc90b EI |
299 | dev = qdev_create(NULL, "etraxfs,pic"); |
300 | /* FIXME: Is there a proper way to signal vectors to the CPU core? */ | |
ee6847d1 | 301 | qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector); |
e23a1b33 | 302 | qdev_init_nofail(dev); |
1356b98d | 303 | s = SYS_BUS_DEVICE(dev); |
fd6dc90b | 304 | sysbus_mmio_map(s, 0, 0x3001c000); |
4a6da670 EI |
305 | sysbus_connect_irq(s, 0, qdev_get_gpio_in(DEVICE(cpu), CRIS_CPU_IRQ)); |
306 | sysbus_connect_irq(s, 1, qdev_get_gpio_in(DEVICE(cpu), CRIS_CPU_NMI)); | |
fd6dc90b | 307 | for (i = 0; i < 30; i++) { |
067a3ddc | 308 | irq[i] = qdev_get_gpio_in(dev, i); |
fd6dc90b | 309 | } |
067a3ddc PB |
310 | nmi[0] = qdev_get_gpio_in(dev, 30); |
311 | nmi[1] = qdev_get_gpio_in(dev, 31); | |
73cfd29f | 312 | |
ba494313 | 313 | etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10); |
10c144e2 EI |
314 | for (i = 0; i < 10; i++) { |
315 | /* On ETRAX, odd numbered channels are inputs. */ | |
73cfd29f | 316 | etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1); |
10c144e2 EI |
317 | } |
318 | ||
319 | /* Add the two ethernet blocks. */ | |
7267c094 | 320 | dma_eth = g_malloc0(sizeof dma_eth[0] * 4); /* Allocate 4 channels. */ |
1da005b3 EI |
321 | etraxfs_eth_init(&nd_table[0], 0x30034000, 1, &dma_eth[0], &dma_eth[1]); |
322 | if (nb_nics > 1) { | |
323 | etraxfs_eth_init(&nd_table[1], 0x30036000, 2, &dma_eth[2], &dma_eth[3]); | |
324 | } | |
10c144e2 EI |
325 | |
326 | /* The DMA Connector block is missing, hardwire things for now. */ | |
1da005b3 EI |
327 | etraxfs_dmac_connect_client(etraxfs_dmac, 0, &dma_eth[0]); |
328 | etraxfs_dmac_connect_client(etraxfs_dmac, 1, &dma_eth[1]); | |
329 | if (nb_nics > 1) { | |
330 | etraxfs_dmac_connect_client(etraxfs_dmac, 6, &dma_eth[2]); | |
331 | etraxfs_dmac_connect_client(etraxfs_dmac, 7, &dma_eth[3]); | |
10c144e2 EI |
332 | } |
333 | ||
334 | /* 2 timers. */ | |
3b1fd90e EI |
335 | sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL); |
336 | sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL); | |
10c144e2 EI |
337 | |
338 | for (i = 0; i < 4; i++) { | |
4b816985 | 339 | sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000, |
3b1fd90e | 340 | irq[0x14 + i]); |
10c144e2 EI |
341 | } |
342 | ||
5efe843a AF |
343 | if (kernel_filename) { |
344 | li.image_filename = kernel_filename; | |
345 | li.cmdline = kernel_cmdline; | |
346 | cris_load_image(cpu, &li); | |
347 | } else if (!qtest_enabled()) { | |
77d4f95e EI |
348 | fprintf(stderr, "Kernel image must be specified\n"); |
349 | exit(1); | |
10c144e2 | 350 | } |
10c144e2 EI |
351 | } |
352 | ||
f80f9ec9 | 353 | static QEMUMachine axisdev88_machine = { |
10c144e2 EI |
354 | .name = "axis-dev88", |
355 | .desc = "AXIS devboard 88", | |
356 | .init = axisdev88_init, | |
bbea04df | 357 | .is_default = 1, |
10c144e2 | 358 | }; |
f80f9ec9 AL |
359 | |
360 | static void axisdev88_machine_init(void) | |
361 | { | |
362 | qemu_register_machine(&axisdev88_machine); | |
363 | } | |
364 | ||
365 | machine_init(axisdev88_machine_init); |