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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
11#include "hw.h"
12#include "pxa.h"
13#include "arm-misc.h"
14#include "devices.h"
15#include "i2c.h"
16#include "ssi.h"
17#include "boards.h"
18#include "sysemu.h"
19#include "flash.h"
20#include "blockdev.h"
21#include "console.h"
22#include "audio/audio.h"
23
24#ifdef DEBUG_Z2
25#define DPRINTF(fmt, ...) \
26 printf(fmt, ## __VA_ARGS__)
27#else
28#define DPRINTF(fmt, ...)
29#endif
30
31static struct keymap map[0x100] = {
32 [0 ... 0xff] = { -1, -1 },
33 [0x3b] = {0, 0}, /* Option = F1 */
34 [0xc8] = {0, 1}, /* Up */
35 [0xd0] = {0, 2}, /* Down */
36 [0xcb] = {0, 3}, /* Left */
37 [0xcd] = {0, 4}, /* Right */
38 [0xcf] = {0, 5}, /* End */
39 [0x0d] = {0, 6}, /* KPPLUS */
40 [0xc7] = {1, 0}, /* Home */
41 [0x10] = {1, 1}, /* Q */
42 [0x17] = {1, 2}, /* I */
43 [0x22] = {1, 3}, /* G */
44 [0x2d] = {1, 4}, /* X */
45 [0x1c] = {1, 5}, /* Enter */
46 [0x0c] = {1, 6}, /* KPMINUS */
47 [0xc9] = {2, 0}, /* PageUp */
48 [0x11] = {2, 1}, /* W */
49 [0x18] = {2, 2}, /* O */
50 [0x23] = {2, 3}, /* H */
51 [0x2e] = {2, 4}, /* C */
52 [0x38] = {2, 5}, /* LeftAlt */
53 [0xd1] = {3, 0}, /* PageDown */
54 [0x12] = {3, 1}, /* E */
55 [0x19] = {3, 2}, /* P */
56 [0x24] = {3, 3}, /* J */
57 [0x2f] = {3, 4}, /* V */
58 [0x2a] = {3, 5}, /* LeftShift */
59 [0x01] = {4, 0}, /* Esc */
60 [0x13] = {4, 1}, /* R */
61 [0x1e] = {4, 2}, /* A */
62 [0x25] = {4, 3}, /* K */
63 [0x30] = {4, 4}, /* B */
64 [0x1d] = {4, 5}, /* LeftCtrl */
65 [0x0f] = {5, 0}, /* Tab */
66 [0x14] = {5, 1}, /* T */
67 [0x1f] = {5, 2}, /* S */
68 [0x26] = {5, 3}, /* L */
69 [0x31] = {5, 4}, /* N */
70 [0x39] = {5, 5}, /* Space */
71 [0x3c] = {6, 0}, /* Stop = F2 */
72 [0x15] = {6, 1}, /* Y */
73 [0x20] = {6, 2}, /* D */
74 [0x0e] = {6, 3}, /* Backspace */
75 [0x32] = {6, 4}, /* M */
76 [0x33] = {6, 5}, /* Comma */
77 [0x3d] = {7, 0}, /* Play = F3 */
78 [0x16] = {7, 1}, /* U */
79 [0x21] = {7, 2}, /* F */
80 [0x2c] = {7, 3}, /* Z */
81 [0x27] = {7, 4}, /* Semicolon */
82 [0x34] = {7, 5}, /* Dot */
83};
84
85#define Z2_RAM_SIZE 0x02000000
86#define Z2_FLASH_BASE 0x00000000
87#define Z2_FLASH_SIZE 0x00800000
88
89static struct arm_boot_info z2_binfo = {
90 .loader_start = PXA2XX_SDRAM_BASE,
91 .ram_size = Z2_RAM_SIZE,
92};
93
94#define Z2_GPIO_SD_DETECT 96
95#define Z2_GPIO_AC_IN 0
96#define Z2_GPIO_KEY_ON 1
97#define Z2_GPIO_LCD_CS 88
98
99typedef struct {
100 SSISlave ssidev;
101 int32_t selected;
102 int32_t enabled;
103 uint8_t buf[3];
104 uint32_t cur_reg;
105 int pos;
106} ZipitLCD;
107
108static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
109{
110 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
111 uint16_t val;
112 if (z->selected) {
113 z->buf[z->pos] = value & 0xff;
114 z->pos++;
115 }
116 if (z->pos == 3) {
117 switch (z->buf[0]) {
118 case 0x74:
119 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
120 z->cur_reg = z->buf[2];
121 break;
122 case 0x76:
123 val = z->buf[1] << 8 | z->buf[2];
124 DPRINTF("%s: value: 0x%.4x\n", __func__, val);
125 if (z->cur_reg == 0x22 && val == 0x0000) {
126 z->enabled = 1;
127 printf("%s: LCD enabled\n", __func__);
128 } else if (z->cur_reg == 0x10 && val == 0x0000) {
129 z->enabled = 0;
130 printf("%s: LCD disabled\n", __func__);
131 }
132 break;
133 default:
134 DPRINTF("%s: unknown command!\n", __func__);
135 break;
136 }
137 z->pos = 0;
138 }
139 return 0;
140}
141
142static void z2_lcd_cs(void *opaque, int line, int level)
143{
144 ZipitLCD *z2_lcd = opaque;
145 z2_lcd->selected = !level;
146}
147
148static int zipit_lcd_init(SSISlave *dev)
149{
150 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
151 z->selected = 0;
152 z->enabled = 0;
153 z->pos = 0;
154
155 return 0;
156}
157
158static VMStateDescription vmstate_zipit_lcd_state = {
159 .name = "zipit-lcd",
160 .version_id = 1,
161 .minimum_version_id = 1,
162 .minimum_version_id_old = 1,
163 .fields = (VMStateField[]) {
164 VMSTATE_INT32(selected, ZipitLCD),
165 VMSTATE_INT32(enabled, ZipitLCD),
166 VMSTATE_BUFFER(buf, ZipitLCD),
167 VMSTATE_UINT32(cur_reg, ZipitLCD),
168 VMSTATE_INT32(pos, ZipitLCD),
169 VMSTATE_END_OF_LIST(),
170 }
171};
172
173static SSISlaveInfo zipit_lcd_info = {
174 .qdev.name = "zipit-lcd",
175 .qdev.size = sizeof(ZipitLCD),
176 .qdev.vmsd = &vmstate_zipit_lcd_state,
177 .init = zipit_lcd_init,
178 .transfer = zipit_lcd_transfer
179};
180
181typedef struct {
182 i2c_slave i2c;
183 int len;
184 uint8_t buf[3];
185} AER915State;
186
187static int aer915_send(i2c_slave *i2c, uint8_t data)
188{
189 AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
190 s->buf[s->len] = data;
191 if (s->len++ > 2) {
192 DPRINTF("%s: message too long (%i bytes)\n",
193 __func__, s->len);
194 return 1;
195 }
196
197 if (s->len == 2) {
198 DPRINTF("%s: reg %d value 0x%02x\n", __func__,
199 s->buf[0], s->buf[1]);
200 }
201
202 return 0;
203}
204
205static void aer915_event(i2c_slave *i2c, enum i2c_event event)
206{
207 AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
208 switch (event) {
209 case I2C_START_SEND:
210 s->len = 0;
211 break;
212 case I2C_START_RECV:
213 if (s->len != 1) {
214 DPRINTF("%s: short message!?\n", __func__);
215 }
216 break;
217 case I2C_FINISH:
218 break;
219 default:
220 break;
221 }
222}
223
224static int aer915_recv(i2c_slave *slave)
225{
226 int retval = 0x00;
227 AER915State *s = FROM_I2C_SLAVE(AER915State, slave);
228
229 switch (s->buf[0]) {
230 /* Return hardcoded battery voltage,
231 * 0xf0 means ~4.1V
232 */
233 case 0x02:
234 retval = 0xf0;
235 break;
236 /* Return 0x00 for other regs,
237 * we don't know what they are for,
238 * anyway they return 0x00 on real hardware.
239 */
240 default:
241 break;
242 }
243
244 return retval;
245}
246
247static int aer915_init(i2c_slave *i2c)
248{
249 /* Nothing to do. */
250 return 0;
251}
252
253static VMStateDescription vmstate_aer915_state = {
254 .name = "aer915",
255 .version_id = 1,
256 .minimum_version_id = 1,
257 .minimum_version_id_old = 1,
258 .fields = (VMStateField[]) {
259 VMSTATE_INT32(len, AER915State),
260 VMSTATE_BUFFER(buf, AER915State),
261 VMSTATE_END_OF_LIST(),
262 }
263};
264
265static I2CSlaveInfo aer915_info = {
266 .qdev.name = "aer915",
267 .qdev.size = sizeof(AER915State),
268 .qdev.vmsd = &vmstate_aer915_state,
269 .init = aer915_init,
270 .event = aer915_event,
271 .recv = aer915_recv,
272 .send = aer915_send
273};
274
275static void z2_init(ram_addr_t ram_size,
276 const char *boot_device,
277 const char *kernel_filename, const char *kernel_cmdline,
278 const char *initrd_filename, const char *cpu_model)
279{
280 uint32_t sector_len = 0x10000;
281 PXA2xxState *cpu;
282 DriveInfo *dinfo;
01e0451a 283 int be;
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284 void *z2_lcd;
285 i2c_bus *bus;
286 DeviceState *wm;
287
288 if (!cpu_model) {
289 cpu_model = "pxa270-c5";
290 }
291
292 /* Setup CPU & memory */
293 cpu = pxa270_init(z2_binfo.ram_size, cpu_model);
294
295#ifdef TARGET_WORDS_BIGENDIAN
01e0451a 296 be = 1;
3bf11207 297#else
01e0451a 298 be = 0;
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299#endif
300 dinfo = drive_get(IF_PFLASH, 0, 0);
301 if (!dinfo) {
302 fprintf(stderr, "Flash image must be given with the "
303 "'pflash' parameter\n");
304 exit(1);
305 }
306
01e0451a
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307 if (!pflash_cfi01_register(Z2_FLASH_BASE,
308 qemu_ram_alloc(NULL, "z2.flash0", Z2_FLASH_SIZE),
3bf11207 309 dinfo->bdrv, sector_len,
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310 Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0,
311 be)) {
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312 fprintf(stderr, "qemu: Error registering flash memory.\n");
313 exit(1);
314 }
315
316 /* setup keypad */
317 pxa27x_register_keypad(cpu->kp, map, 0x100);
318
319 /* MMC/SD host */
320 pxa2xx_mmci_handlers(cpu->mmc,
321 NULL,
322 qdev_get_gpio_in(cpu->gpio, Z2_GPIO_SD_DETECT));
323
324 ssi_register_slave(&zipit_lcd_info);
325 i2c_register_slave(&aer915_info);
326 z2_lcd = ssi_create_slave(cpu->ssp[1], "zipit-lcd");
327 bus = pxa2xx_i2c_bus(cpu->i2c[0]);
328 i2c_create_slave(bus, "aer915", 0x55);
329 wm = i2c_create_slave(bus, "wm8750", 0x1b);
330 cpu->i2s->opaque = wm;
331 cpu->i2s->codec_out = wm8750_dac_dat;
332 cpu->i2s->codec_in = wm8750_adc_dat;
333 wm8750_data_req_set(wm, cpu->i2s->data_req, cpu->i2s);
334
335 qdev_connect_gpio_out(cpu->gpio, Z2_GPIO_LCD_CS,
336 qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]);
337
338 if (kernel_filename) {
339 z2_binfo.kernel_filename = kernel_filename;
340 z2_binfo.kernel_cmdline = kernel_cmdline;
341 z2_binfo.initrd_filename = initrd_filename;
342 z2_binfo.board_id = 0x6dd;
343 arm_load_kernel(cpu->env, &z2_binfo);
344 }
345}
346
347static QEMUMachine z2_machine = {
348 .name = "z2",
349 .desc = "Zipit Z2 (PXA27x)",
350 .init = z2_init,
351};
352
353static void z2_machine_init(void)
354{
355 qemu_register_machine(&z2_machine);
356}
357
358machine_init(z2_machine_init);