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[qemu.git] / hw / z2.c
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 "hw.h"
15 #include "pxa.h"
16 #include "arm-misc.h"
17 #include "devices.h"
18 #include "i2c.h"
19 #include "ssi.h"
20 #include "boards.h"
21 #include "sysemu.h"
22 #include "flash.h"
23 #include "blockdev.h"
24 #include "console.h"
25 #include "audio/audio.h"
26 #include "exec-memory.h"
27
28 #ifdef DEBUG_Z2
29 #define DPRINTF(fmt, ...) \
30 printf(fmt, ## __VA_ARGS__)
31 #else
32 #define DPRINTF(fmt, ...)
33 #endif
34
35 static struct keymap map[0x100] = {
36 [0 ... 0xff] = { -1, -1 },
37 [0x3b] = {0, 0}, /* Option = F1 */
38 [0xc8] = {0, 1}, /* Up */
39 [0xd0] = {0, 2}, /* Down */
40 [0xcb] = {0, 3}, /* Left */
41 [0xcd] = {0, 4}, /* Right */
42 [0xcf] = {0, 5}, /* End */
43 [0x0d] = {0, 6}, /* KPPLUS */
44 [0xc7] = {1, 0}, /* Home */
45 [0x10] = {1, 1}, /* Q */
46 [0x17] = {1, 2}, /* I */
47 [0x22] = {1, 3}, /* G */
48 [0x2d] = {1, 4}, /* X */
49 [0x1c] = {1, 5}, /* Enter */
50 [0x0c] = {1, 6}, /* KPMINUS */
51 [0xc9] = {2, 0}, /* PageUp */
52 [0x11] = {2, 1}, /* W */
53 [0x18] = {2, 2}, /* O */
54 [0x23] = {2, 3}, /* H */
55 [0x2e] = {2, 4}, /* C */
56 [0x38] = {2, 5}, /* LeftAlt */
57 [0xd1] = {3, 0}, /* PageDown */
58 [0x12] = {3, 1}, /* E */
59 [0x19] = {3, 2}, /* P */
60 [0x24] = {3, 3}, /* J */
61 [0x2f] = {3, 4}, /* V */
62 [0x2a] = {3, 5}, /* LeftShift */
63 [0x01] = {4, 0}, /* Esc */
64 [0x13] = {4, 1}, /* R */
65 [0x1e] = {4, 2}, /* A */
66 [0x25] = {4, 3}, /* K */
67 [0x30] = {4, 4}, /* B */
68 [0x1d] = {4, 5}, /* LeftCtrl */
69 [0x0f] = {5, 0}, /* Tab */
70 [0x14] = {5, 1}, /* T */
71 [0x1f] = {5, 2}, /* S */
72 [0x26] = {5, 3}, /* L */
73 [0x31] = {5, 4}, /* N */
74 [0x39] = {5, 5}, /* Space */
75 [0x3c] = {6, 0}, /* Stop = F2 */
76 [0x15] = {6, 1}, /* Y */
77 [0x20] = {6, 2}, /* D */
78 [0x0e] = {6, 3}, /* Backspace */
79 [0x32] = {6, 4}, /* M */
80 [0x33] = {6, 5}, /* Comma */
81 [0x3d] = {7, 0}, /* Play = F3 */
82 [0x16] = {7, 1}, /* U */
83 [0x21] = {7, 2}, /* F */
84 [0x2c] = {7, 3}, /* Z */
85 [0x27] = {7, 4}, /* Semicolon */
86 [0x34] = {7, 5}, /* Dot */
87 };
88
89 #define Z2_RAM_SIZE 0x02000000
90 #define Z2_FLASH_BASE 0x00000000
91 #define Z2_FLASH_SIZE 0x00800000
92
93 static struct arm_boot_info z2_binfo = {
94 .loader_start = PXA2XX_SDRAM_BASE,
95 .ram_size = Z2_RAM_SIZE,
96 };
97
98 #define Z2_GPIO_SD_DETECT 96
99 #define Z2_GPIO_AC_IN 0
100 #define Z2_GPIO_KEY_ON 1
101 #define Z2_GPIO_LCD_CS 88
102
103 typedef struct {
104 SSISlave ssidev;
105 int32_t selected;
106 int32_t enabled;
107 uint8_t buf[3];
108 uint32_t cur_reg;
109 int pos;
110 } ZipitLCD;
111
112 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
113 {
114 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
115 uint16_t val;
116 if (z->selected) {
117 z->buf[z->pos] = value & 0xff;
118 z->pos++;
119 }
120 if (z->pos == 3) {
121 switch (z->buf[0]) {
122 case 0x74:
123 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
124 z->cur_reg = z->buf[2];
125 break;
126 case 0x76:
127 val = z->buf[1] << 8 | z->buf[2];
128 DPRINTF("%s: value: 0x%.4x\n", __func__, val);
129 if (z->cur_reg == 0x22 && val == 0x0000) {
130 z->enabled = 1;
131 printf("%s: LCD enabled\n", __func__);
132 } else if (z->cur_reg == 0x10 && val == 0x0000) {
133 z->enabled = 0;
134 printf("%s: LCD disabled\n", __func__);
135 }
136 break;
137 default:
138 DPRINTF("%s: unknown command!\n", __func__);
139 break;
140 }
141 z->pos = 0;
142 }
143 return 0;
144 }
145
146 static void z2_lcd_cs(void *opaque, int line, int level)
147 {
148 ZipitLCD *z2_lcd = opaque;
149 z2_lcd->selected = !level;
150 }
151
152 static int zipit_lcd_init(SSISlave *dev)
153 {
154 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
155 z->selected = 0;
156 z->enabled = 0;
157 z->pos = 0;
158
159 return 0;
160 }
161
162 static VMStateDescription vmstate_zipit_lcd_state = {
163 .name = "zipit-lcd",
164 .version_id = 1,
165 .minimum_version_id = 1,
166 .minimum_version_id_old = 1,
167 .fields = (VMStateField[]) {
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 SSISlaveInfo zipit_lcd_info = {
178 .qdev.name = "zipit-lcd",
179 .qdev.size = sizeof(ZipitLCD),
180 .qdev.vmsd = &vmstate_zipit_lcd_state,
181 .init = zipit_lcd_init,
182 .transfer = zipit_lcd_transfer
183 };
184
185 typedef struct {
186 i2c_slave i2c;
187 int len;
188 uint8_t buf[3];
189 } AER915State;
190
191 static int aer915_send(i2c_slave *i2c, uint8_t data)
192 {
193 AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
194 s->buf[s->len] = data;
195 if (s->len++ > 2) {
196 DPRINTF("%s: message too long (%i bytes)\n",
197 __func__, s->len);
198 return 1;
199 }
200
201 if (s->len == 2) {
202 DPRINTF("%s: reg %d value 0x%02x\n", __func__,
203 s->buf[0], s->buf[1]);
204 }
205
206 return 0;
207 }
208
209 static void aer915_event(i2c_slave *i2c, enum i2c_event event)
210 {
211 AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
212 switch (event) {
213 case I2C_START_SEND:
214 s->len = 0;
215 break;
216 case I2C_START_RECV:
217 if (s->len != 1) {
218 DPRINTF("%s: short message!?\n", __func__);
219 }
220 break;
221 case I2C_FINISH:
222 break;
223 default:
224 break;
225 }
226 }
227
228 static int aer915_recv(i2c_slave *slave)
229 {
230 int retval = 0x00;
231 AER915State *s = FROM_I2C_SLAVE(AER915State, slave);
232
233 switch (s->buf[0]) {
234 /* Return hardcoded battery voltage,
235 * 0xf0 means ~4.1V
236 */
237 case 0x02:
238 retval = 0xf0;
239 break;
240 /* Return 0x00 for other regs,
241 * we don't know what they are for,
242 * anyway they return 0x00 on real hardware.
243 */
244 default:
245 break;
246 }
247
248 return retval;
249 }
250
251 static int aer915_init(i2c_slave *i2c)
252 {
253 /* Nothing to do. */
254 return 0;
255 }
256
257 static VMStateDescription vmstate_aer915_state = {
258 .name = "aer915",
259 .version_id = 1,
260 .minimum_version_id = 1,
261 .minimum_version_id_old = 1,
262 .fields = (VMStateField[]) {
263 VMSTATE_INT32(len, AER915State),
264 VMSTATE_BUFFER(buf, AER915State),
265 VMSTATE_END_OF_LIST(),
266 }
267 };
268
269 static I2CSlaveInfo aer915_info = {
270 .qdev.name = "aer915",
271 .qdev.size = sizeof(AER915State),
272 .qdev.vmsd = &vmstate_aer915_state,
273 .init = aer915_init,
274 .event = aer915_event,
275 .recv = aer915_recv,
276 .send = aer915_send
277 };
278
279 static void z2_init(ram_addr_t ram_size,
280 const char *boot_device,
281 const char *kernel_filename, const char *kernel_cmdline,
282 const char *initrd_filename, const char *cpu_model)
283 {
284 MemoryRegion *address_space_mem = get_system_memory();
285 uint32_t sector_len = 0x10000;
286 PXA2xxState *cpu;
287 DriveInfo *dinfo;
288 int be;
289 void *z2_lcd;
290 i2c_bus *bus;
291 DeviceState *wm;
292
293 if (!cpu_model) {
294 cpu_model = "pxa270-c5";
295 }
296
297 /* Setup CPU & memory */
298 cpu = pxa270_init(address_space_mem, z2_binfo.ram_size, cpu_model);
299
300 #ifdef TARGET_WORDS_BIGENDIAN
301 be = 1;
302 #else
303 be = 0;
304 #endif
305 dinfo = drive_get(IF_PFLASH, 0, 0);
306 if (!dinfo) {
307 fprintf(stderr, "Flash image must be given with the "
308 "'pflash' parameter\n");
309 exit(1);
310 }
311
312 if (!pflash_cfi01_register(Z2_FLASH_BASE,
313 NULL, "z2.flash0", Z2_FLASH_SIZE,
314 dinfo->bdrv, sector_len,
315 Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0,
316 be)) {
317 fprintf(stderr, "qemu: Error registering flash memory.\n");
318 exit(1);
319 }
320
321 /* setup keypad */
322 pxa27x_register_keypad(cpu->kp, map, 0x100);
323
324 /* MMC/SD host */
325 pxa2xx_mmci_handlers(cpu->mmc,
326 NULL,
327 qdev_get_gpio_in(cpu->gpio, Z2_GPIO_SD_DETECT));
328
329 ssi_register_slave(&zipit_lcd_info);
330 i2c_register_slave(&aer915_info);
331 z2_lcd = ssi_create_slave(cpu->ssp[1], "zipit-lcd");
332 bus = pxa2xx_i2c_bus(cpu->i2c[0]);
333 i2c_create_slave(bus, "aer915", 0x55);
334 wm = i2c_create_slave(bus, "wm8750", 0x1b);
335 cpu->i2s->opaque = wm;
336 cpu->i2s->codec_out = wm8750_dac_dat;
337 cpu->i2s->codec_in = wm8750_adc_dat;
338 wm8750_data_req_set(wm, cpu->i2s->data_req, cpu->i2s);
339
340 qdev_connect_gpio_out(cpu->gpio, Z2_GPIO_LCD_CS,
341 qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]);
342
343 if (kernel_filename) {
344 z2_binfo.kernel_filename = kernel_filename;
345 z2_binfo.kernel_cmdline = kernel_cmdline;
346 z2_binfo.initrd_filename = initrd_filename;
347 z2_binfo.board_id = 0x6dd;
348 arm_load_kernel(cpu->env, &z2_binfo);
349 }
350 }
351
352 static QEMUMachine z2_machine = {
353 .name = "z2",
354 .desc = "Zipit Z2 (PXA27x)",
355 .init = z2_init,
356 };
357
358 static void z2_machine_init(void)
359 {
360 qemu_register_machine(&z2_machine);
361 }
362
363 machine_init(z2_machine_init);