1 | /* |
2 | * PXA270-based Zipit Z2 device |
3 | * |
4 | * Copyright (c) 2011 by Vasily Khoruzhick <anarsoul@gmail.com> |
5 | * |
6 | * Code is based on mainstone platform. |
7 | * |
8 | * This code is licensed under the GNU GPL v2. |
9 | * |
10 | * Contributions after 2012-01-13 are licensed under the terms of the |
11 | * GNU GPL, version 2 or (at your option) any later version. |
12 | */ |
13 | |
14 | #include "qemu/osdep.h" |
15 | #include "hw/arm/pxa.h" |
16 | #include "hw/arm/boot.h" |
17 | #include "hw/i2c/i2c.h" |
18 | #include "hw/irq.h" |
19 | #include "hw/ssi/ssi.h" |
20 | #include "migration/vmstate.h" |
21 | #include "hw/boards.h" |
22 | #include "hw/block/flash.h" |
23 | #include "ui/console.h" |
24 | #include "hw/audio/wm8750.h" |
25 | #include "audio/audio.h" |
26 | #include "exec/address-spaces.h" |
27 | #include "sysemu/qtest.h" |
28 | #include "cpu.h" |
29 | |
30 | #ifdef DEBUG_Z2 |
31 | #define DPRINTF(fmt, ...) \ |
32 | printf(fmt, ## __VA_ARGS__) |
33 | #else |
34 | #define DPRINTF(fmt, ...) |
35 | #endif |
36 | |
37 | static const struct keymap map[0x100] = { |
38 | [0 ... 0xff] = { -1, -1 }, |
39 | [0x3b] = {0, 0}, /* Option = F1 */ |
40 | [0xc8] = {0, 1}, /* Up */ |
41 | [0xd0] = {0, 2}, /* Down */ |
42 | [0xcb] = {0, 3}, /* Left */ |
43 | [0xcd] = {0, 4}, /* Right */ |
44 | [0xcf] = {0, 5}, /* End */ |
45 | [0x0d] = {0, 6}, /* KPPLUS */ |
46 | [0xc7] = {1, 0}, /* Home */ |
47 | [0x10] = {1, 1}, /* Q */ |
48 | [0x17] = {1, 2}, /* I */ |
49 | [0x22] = {1, 3}, /* G */ |
50 | [0x2d] = {1, 4}, /* X */ |
51 | [0x1c] = {1, 5}, /* Enter */ |
52 | [0x0c] = {1, 6}, /* KPMINUS */ |
53 | [0xc9] = {2, 0}, /* PageUp */ |
54 | [0x11] = {2, 1}, /* W */ |
55 | [0x18] = {2, 2}, /* O */ |
56 | [0x23] = {2, 3}, /* H */ |
57 | [0x2e] = {2, 4}, /* C */ |
58 | [0x38] = {2, 5}, /* LeftAlt */ |
59 | [0xd1] = {3, 0}, /* PageDown */ |
60 | [0x12] = {3, 1}, /* E */ |
61 | [0x19] = {3, 2}, /* P */ |
62 | [0x24] = {3, 3}, /* J */ |
63 | [0x2f] = {3, 4}, /* V */ |
64 | [0x2a] = {3, 5}, /* LeftShift */ |
65 | [0x01] = {4, 0}, /* Esc */ |
66 | [0x13] = {4, 1}, /* R */ |
67 | [0x1e] = {4, 2}, /* A */ |
68 | [0x25] = {4, 3}, /* K */ |
69 | [0x30] = {4, 4}, /* B */ |
70 | [0x1d] = {4, 5}, /* LeftCtrl */ |
71 | [0x0f] = {5, 0}, /* Tab */ |
72 | [0x14] = {5, 1}, /* T */ |
73 | [0x1f] = {5, 2}, /* S */ |
74 | [0x26] = {5, 3}, /* L */ |
75 | [0x31] = {5, 4}, /* N */ |
76 | [0x39] = {5, 5}, /* Space */ |
77 | [0x3c] = {6, 0}, /* Stop = F2 */ |
78 | [0x15] = {6, 1}, /* Y */ |
79 | [0x20] = {6, 2}, /* D */ |
80 | [0x0e] = {6, 3}, /* Backspace */ |
81 | [0x32] = {6, 4}, /* M */ |
82 | [0x33] = {6, 5}, /* Comma */ |
83 | [0x3d] = {7, 0}, /* Play = F3 */ |
84 | [0x16] = {7, 1}, /* U */ |
85 | [0x21] = {7, 2}, /* F */ |
86 | [0x2c] = {7, 3}, /* Z */ |
87 | [0x27] = {7, 4}, /* Semicolon */ |
88 | [0x34] = {7, 5}, /* Dot */ |
89 | }; |
90 | |
91 | #define Z2_RAM_SIZE 0x02000000 |
92 | #define Z2_FLASH_BASE 0x00000000 |
93 | #define Z2_FLASH_SIZE 0x00800000 |
94 | |
95 | static struct arm_boot_info z2_binfo = { |
96 | .loader_start = PXA2XX_SDRAM_BASE, |
97 | .ram_size = Z2_RAM_SIZE, |
98 | }; |
99 | |
100 | #define Z2_GPIO_SD_DETECT 96 |
101 | #define Z2_GPIO_AC_IN 0 |
102 | #define Z2_GPIO_KEY_ON 1 |
103 | #define Z2_GPIO_LCD_CS 88 |
104 | |
105 | typedef struct { |
106 | SSISlave ssidev; |
107 | int32_t selected; |
108 | int32_t enabled; |
109 | uint8_t buf[3]; |
110 | uint32_t cur_reg; |
111 | int pos; |
112 | } ZipitLCD; |
113 | |
114 | static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value) |
115 | { |
116 | ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); |
117 | uint16_t val; |
118 | if (z->selected) { |
119 | z->buf[z->pos] = value & 0xff; |
120 | z->pos++; |
121 | } |
122 | if (z->pos == 3) { |
123 | switch (z->buf[0]) { |
124 | case 0x74: |
125 | DPRINTF("%s: reg: 0x%.2x\n" , __func__, z->buf[2]); |
126 | z->cur_reg = z->buf[2]; |
127 | break; |
128 | case 0x76: |
129 | val = z->buf[1] << 8 | z->buf[2]; |
130 | DPRINTF("%s: value: 0x%.4x\n" , __func__, val); |
131 | if (z->cur_reg == 0x22 && val == 0x0000) { |
132 | z->enabled = 1; |
133 | printf("%s: LCD enabled\n" , __func__); |
134 | } else if (z->cur_reg == 0x10 && val == 0x0000) { |
135 | z->enabled = 0; |
136 | printf("%s: LCD disabled\n" , __func__); |
137 | } |
138 | break; |
139 | default: |
140 | DPRINTF("%s: unknown command!\n" , __func__); |
141 | break; |
142 | } |
143 | z->pos = 0; |
144 | } |
145 | return 0; |
146 | } |
147 | |
148 | static void z2_lcd_cs(void *opaque, int line, int level) |
149 | { |
150 | ZipitLCD *z2_lcd = opaque; |
151 | z2_lcd->selected = !level; |
152 | } |
153 | |
154 | static void zipit_lcd_realize(SSISlave *dev, Error **errp) |
155 | { |
156 | ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); |
157 | z->selected = 0; |
158 | z->enabled = 0; |
159 | z->pos = 0; |
160 | } |
161 | |
162 | static VMStateDescription vmstate_zipit_lcd_state = { |
163 | .name = "zipit-lcd" , |
164 | .version_id = 2, |
165 | .minimum_version_id = 2, |
166 | .fields = (VMStateField[]) { |
167 | VMSTATE_SSI_SLAVE(ssidev, ZipitLCD), |
168 | VMSTATE_INT32(selected, ZipitLCD), |
169 | VMSTATE_INT32(enabled, ZipitLCD), |
170 | VMSTATE_BUFFER(buf, ZipitLCD), |
171 | VMSTATE_UINT32(cur_reg, ZipitLCD), |
172 | VMSTATE_INT32(pos, ZipitLCD), |
173 | VMSTATE_END_OF_LIST(), |
174 | } |
175 | }; |
176 | |
177 | static void zipit_lcd_class_init(ObjectClass *klass, void *data) |
178 | { |
179 | DeviceClass *dc = DEVICE_CLASS(klass); |
180 | SSISlaveClass *k = SSI_SLAVE_CLASS(klass); |
181 | |
182 | k->realize = zipit_lcd_realize; |
183 | k->transfer = zipit_lcd_transfer; |
184 | dc->vmsd = &vmstate_zipit_lcd_state; |
185 | } |
186 | |
187 | static const TypeInfo zipit_lcd_info = { |
188 | .name = "zipit-lcd" , |
189 | .parent = TYPE_SSI_SLAVE, |
190 | .instance_size = sizeof(ZipitLCD), |
191 | .class_init = zipit_lcd_class_init, |
192 | }; |
193 | |
194 | #define TYPE_AER915 "aer915" |
195 | #define AER915(obj) OBJECT_CHECK(AER915State, (obj), TYPE_AER915) |
196 | |
197 | typedef struct AER915State { |
198 | I2CSlave parent_obj; |
199 | |
200 | int len; |
201 | uint8_t buf[3]; |
202 | } AER915State; |
203 | |
204 | static int aer915_send(I2CSlave *i2c, uint8_t data) |
205 | { |
206 | AER915State *s = AER915(i2c); |
207 | |
208 | s->buf[s->len] = data; |
209 | if (s->len++ > 2) { |
210 | DPRINTF("%s: message too long (%i bytes)\n" , |
211 | __func__, s->len); |
212 | return 1; |
213 | } |
214 | |
215 | if (s->len == 2) { |
216 | DPRINTF("%s: reg %d value 0x%02x\n" , __func__, |
217 | s->buf[0], s->buf[1]); |
218 | } |
219 | |
220 | return 0; |
221 | } |
222 | |
223 | static int aer915_event(I2CSlave *i2c, enum i2c_event event) |
224 | { |
225 | AER915State *s = AER915(i2c); |
226 | |
227 | switch (event) { |
228 | case I2C_START_SEND: |
229 | s->len = 0; |
230 | break; |
231 | case I2C_START_RECV: |
232 | if (s->len != 1) { |
233 | DPRINTF("%s: short message!?\n" , __func__); |
234 | } |
235 | break; |
236 | case I2C_FINISH: |
237 | break; |
238 | default: |
239 | break; |
240 | } |
241 | |
242 | return 0; |
243 | } |
244 | |
245 | static uint8_t aer915_recv(I2CSlave *slave) |
246 | { |
247 | AER915State *s = AER915(slave); |
248 | int retval = 0x00; |
249 | |
250 | switch (s->buf[0]) { |
251 | /* Return hardcoded battery voltage, |
252 | * 0xf0 means ~4.1V |
253 | */ |
254 | case 0x02: |
255 | retval = 0xf0; |
256 | break; |
257 | /* Return 0x00 for other regs, |
258 | * we don't know what they are for, |
259 | * anyway they return 0x00 on real hardware. |
260 | */ |
261 | default: |
262 | break; |
263 | } |
264 | |
265 | return retval; |
266 | } |
267 | |
268 | static VMStateDescription vmstate_aer915_state = { |
269 | .name = "aer915" , |
270 | .version_id = 1, |
271 | .minimum_version_id = 1, |
272 | .fields = (VMStateField[]) { |
273 | VMSTATE_INT32(len, AER915State), |
274 | VMSTATE_BUFFER(buf, AER915State), |
275 | VMSTATE_END_OF_LIST(), |
276 | } |
277 | }; |
278 | |
279 | static void aer915_class_init(ObjectClass *klass, void *data) |
280 | { |
281 | DeviceClass *dc = DEVICE_CLASS(klass); |
282 | I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); |
283 | |
284 | k->event = aer915_event; |
285 | k->recv = aer915_recv; |
286 | k->send = aer915_send; |
287 | dc->vmsd = &vmstate_aer915_state; |
288 | } |
289 | |
290 | static const TypeInfo aer915_info = { |
291 | .name = TYPE_AER915, |
292 | .parent = TYPE_I2C_SLAVE, |
293 | .instance_size = sizeof(AER915State), |
294 | .class_init = aer915_class_init, |
295 | }; |
296 | |
297 | static void z2_init(MachineState *machine) |
298 | { |
299 | MemoryRegion *address_space_mem = get_system_memory(); |
300 | uint32_t sector_len = 0x10000; |
301 | PXA2xxState *mpu; |
302 | DriveInfo *dinfo; |
303 | int be; |
304 | void *z2_lcd; |
305 | I2CBus *bus; |
306 | DeviceState *wm; |
307 | |
308 | /* Setup CPU & memory */ |
309 | mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type); |
310 | |
311 | #ifdef TARGET_WORDS_BIGENDIAN |
312 | be = 1; |
313 | #else |
314 | be = 0; |
315 | #endif |
316 | dinfo = drive_get(IF_PFLASH, 0, 0); |
317 | if (!dinfo && !qtest_enabled()) { |
318 | error_report("Flash image must be given with the " |
319 | "'pflash' parameter" ); |
320 | exit(1); |
321 | } |
322 | |
323 | if (!pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0" , Z2_FLASH_SIZE, |
324 | dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, |
325 | sector_len, 4, 0, 0, 0, 0, be)) { |
326 | error_report("Error registering flash memory" ); |
327 | exit(1); |
328 | } |
329 | |
330 | /* setup keypad */ |
331 | pxa27x_register_keypad(mpu->kp, map, 0x100); |
332 | |
333 | /* MMC/SD host */ |
334 | pxa2xx_mmci_handlers(mpu->mmc, |
335 | NULL, |
336 | qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); |
337 | |
338 | type_register_static(&zipit_lcd_info); |
339 | type_register_static(&aer915_info); |
340 | z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd" ); |
341 | bus = pxa2xx_i2c_bus(mpu->i2c[0]); |
342 | i2c_create_slave(bus, TYPE_AER915, 0x55); |
343 | wm = i2c_create_slave(bus, TYPE_WM8750, 0x1b); |
344 | mpu->i2s->opaque = wm; |
345 | mpu->i2s->codec_out = wm8750_dac_dat; |
346 | mpu->i2s->codec_in = wm8750_adc_dat; |
347 | wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); |
348 | |
349 | qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, |
350 | qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); |
351 | |
352 | z2_binfo.board_id = 0x6dd; |
353 | arm_load_kernel(mpu->cpu, machine, &z2_binfo); |
354 | } |
355 | |
356 | static void z2_machine_init(MachineClass *mc) |
357 | { |
358 | mc->desc = "Zipit Z2 (PXA27x)" ; |
359 | mc->init = z2_init; |
360 | mc->ignore_memory_transaction_failures = true; |
361 | mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5" ); |
362 | } |
363 | |
364 | DEFINE_MACHINE("z2" , z2_machine_init) |
365 | |