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1 /*
2  * (C) Copyright 2008
3  * Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com.
4  *
5  * Copyright 2004 Freescale Semiconductor.
6  * (C) Copyright 2002,2003, Motorola Inc.
7  * Xianghua Xiao, (X.Xiao@motorola.com)
8  *
9  * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
10  *
11  * See file CREDITS for list of people who contributed to this
12  * project.
13  *
14  * This program is free software; you can redistribute it and/or
15  * modify it under the terms of the GNU General Public License as
16  * published by the Free Software Foundation; either version 2 of
17  * the License, or (at your option) any later version.
18  *
19  * This program is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.         See the
22  * GNU General Public License for more details.
23  *
24  * You should have received a copy of the GNU General Public License
25  * along with this program; if not, write to the Free Software
26  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27  * MA 02111-1307 USA
28  */
29
30 #include <common.h>
31 #include <pci.h>
32 #include <asm/processor.h>
33 #include <asm/immap_85xx.h>
34 #include <ioports.h>
35 #include <flash.h>
36 #include <libfdt.h>
37 #include <fdt_support.h>
38 #include <asm/io.h>
39 #include <i2c.h>
40 #include <mb862xx.h>
41 #include <video_fb.h>
42 #include "upm_table.h"
43
44 DECLARE_GLOBAL_DATA_PTR;
45
46 extern flash_info_t flash_info[];       /* FLASH chips info */
47 extern GraphicDevice mb862xx;
48
49 void local_bus_init (void);
50 ulong flash_get_size (ulong base, int banknum);
51
52 int checkboard (void)
53 {
54         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
55         char buf[64];
56         int f;
57         int i = getenv_f("serial#", buf, sizeof(buf));
58 #ifdef CONFIG_PCI
59         char *src;
60 #endif
61
62         puts("Board: Socrates");
63         if (i > 0) {
64                 puts(", serial# ");
65                 puts(buf);
66         }
67         putc('\n');
68
69 #ifdef CONFIG_PCI
70         /* Check the PCI_clk sel bit */
71         if (in_be32(&gur->porpllsr) & (1<<15)) {
72                 src = "SYSCLK";
73                 f = CONFIG_SYS_CLK_FREQ;
74         } else {
75                 src = "PCI_CLK";
76                 f = CONFIG_PCI_CLK_FREQ;
77         }
78         printf ("PCI1:  32 bit, %d MHz (%s)\n", f/1000000, src);
79 #else
80         printf ("PCI1:  disabled\n");
81 #endif
82
83         /*
84          * Initialize local bus.
85          */
86         local_bus_init ();
87         return 0;
88 }
89
90 int misc_init_r (void)
91 {
92         /*
93          * Adjust flash start and offset to detected values
94          */
95         gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
96         gd->bd->bi_flashoffset = 0;
97
98         /*
99          * Check if boot FLASH isn't max size
100          */
101         if (gd->bd->bi_flashsize < (0 - CONFIG_SYS_FLASH0)) {
102                 set_lbc_or(0, gd->bd->bi_flashstart |
103                            (CONFIG_SYS_OR0_PRELIM & 0x00007fff));
104                 set_lbc_br(0, gd->bd->bi_flashstart |
105                            (CONFIG_SYS_BR0_PRELIM & 0x00007fff));
106
107                 /*
108                  * Re-check to get correct base address
109                  */
110                 flash_get_size(gd->bd->bi_flashstart, CONFIG_SYS_MAX_FLASH_BANKS - 1);
111         }
112
113         /*
114          * Check if only one FLASH bank is available
115          */
116         if (gd->bd->bi_flashsize != CONFIG_SYS_MAX_FLASH_BANKS * (0 - CONFIG_SYS_FLASH0)) {
117                 set_lbc_or(1, 0);
118                 set_lbc_br(1, 0);
119
120                 /*
121                  * Re-do flash protection upon new addresses
122                  */
123                 flash_protect (FLAG_PROTECT_CLEAR,
124                                gd->bd->bi_flashstart, 0xffffffff,
125                                &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
126
127                 /* Monitor protection ON by default */
128                 flash_protect (FLAG_PROTECT_SET,
129                                CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
130                                &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
131
132                 /* Environment protection ON by default */
133                 flash_protect (FLAG_PROTECT_SET,
134                                CONFIG_ENV_ADDR,
135                                CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
136                                &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
137
138                 /* Redundant environment protection ON by default */
139                 flash_protect (FLAG_PROTECT_SET,
140                                CONFIG_ENV_ADDR_REDUND,
141                                CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
142                                &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
143         }
144
145         return 0;
146 }
147
148 /*
149  * Initialize Local Bus
150  */
151 void local_bus_init (void)
152 {
153         volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
154         volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
155         sys_info_t sysinfo;
156         uint clkdiv;
157         uint lbc_mhz;
158         uint lcrr = CONFIG_SYS_LBC_LCRR;
159
160         get_sys_info (&sysinfo);
161         clkdiv = lbc->lcrr & LCRR_CLKDIV;
162         lbc_mhz = sysinfo.freqSystemBus / 1000000 / clkdiv;
163
164         /* Disable PLL bypass for Local Bus Clock >= 66 MHz */
165         if (lbc_mhz >= 66)
166                 lcrr &= ~LCRR_DBYP;     /* DLL Enabled */
167         else
168                 lcrr |= LCRR_DBYP;      /* DLL Bypass */
169
170         out_be32 (&lbc->lcrr, lcrr);
171         asm ("sync;isync;msync");
172
173         out_be32 (&lbc->ltesr, 0xffffffff);     /* Clear LBC error interrupts */
174         out_be32 (&lbc->lteir, 0xffffffff);     /* Enable LBC error interrupts */
175         out_be32 (&ecm->eedr, 0xffffffff);      /* Clear ecm errors */
176         out_be32 (&ecm->eeer, 0xffffffff);      /* Enable ecm errors */
177
178         /* Init UPMA for FPGA access */
179         out_be32 (&lbc->mamr, 0x44440); /* Use a customer-supplied value */
180         upmconfig (UPMA, (uint *)UPMTableA, sizeof(UPMTableA)/sizeof(int));
181
182         /* Init UPMB for Lime controller access */
183         out_be32 (&lbc->mbmr, 0x444440); /* Use a customer-supplied value */
184         upmconfig (UPMB, (uint *)UPMTableB, sizeof(UPMTableB)/sizeof(int));
185 }
186
187 #if defined(CONFIG_PCI)
188 /*
189  * Initialize PCI Devices, report devices found.
190  */
191
192 #ifndef CONFIG_PCI_PNP
193 static struct pci_config_table pci_mpc85xxads_config_table[] = {
194         {PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
195          PCI_IDSEL_NUMBER, PCI_ANY_ID,
196          pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
197                                      PCI_ENET0_MEMADDR,
198                                      PCI_COMMAND_MEMORY |
199                                      PCI_COMMAND_MASTER}},
200         {}
201 };
202 #endif
203
204
205 static struct pci_controller hose = {
206 #ifndef CONFIG_PCI_PNP
207         config_table:pci_mpc85xxads_config_table,
208 #endif
209 };
210
211 #endif /* CONFIG_PCI */
212
213
214 void pci_init_board (void)
215 {
216 #ifdef CONFIG_PCI
217         pci_mpc85xx_init (&hose);
218 #endif /* CONFIG_PCI */
219 }
220
221 #ifdef CONFIG_BOARD_EARLY_INIT_R
222 int board_early_init_r (void)
223 {
224         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
225
226         /* set and reset the GPIO pin 2 which will reset the W83782G chip */
227         out_8((unsigned char*)&gur->gpoutdr, 0x3F );
228         out_be32((unsigned int*)&gur->gpiocr, 0x200 );  /* enable GPOut */
229         udelay(200);
230         out_8( (unsigned char*)&gur->gpoutdr, 0x1F );
231
232         return (0);
233 }
234 #endif /* CONFIG_BOARD_EARLY_INIT_R */
235
236 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
237 void
238 ft_board_setup(void *blob, bd_t *bd)
239 {
240         u32 val[12];
241         int rc, i = 0;
242
243         ft_cpu_setup(blob, bd);
244
245         /* Fixup NOR FLASH mapping */
246         val[i++] = 0;                           /* chip select number */
247         val[i++] = 0;                           /* always 0 */
248         val[i++] = gd->bd->bi_flashstart;
249         val[i++] = gd->bd->bi_flashsize;
250
251         if (mb862xx.frameAdrs == CONFIG_SYS_LIME_BASE) {
252                 /* Fixup LIME mapping */
253                 val[i++] = 2;                   /* chip select number */
254                 val[i++] = 0;                   /* always 0 */
255                 val[i++] = CONFIG_SYS_LIME_BASE;
256                 val[i++] = CONFIG_SYS_LIME_SIZE;
257         }
258
259         /* Fixup FPGA mapping */
260         val[i++] = 3;                           /* chip select number */
261         val[i++] = 0;                           /* always 0 */
262         val[i++] = CONFIG_SYS_FPGA_BASE;
263         val[i++] = CONFIG_SYS_FPGA_SIZE;
264
265         rc = fdt_find_and_setprop(blob, "/localbus", "ranges",
266                                   val, i * sizeof(u32), 1);
267         if (rc)
268                 printf("Unable to update localbus ranges, err=%s\n",
269                        fdt_strerror(rc));
270 }
271 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
272
273 #define DEFAULT_BRIGHTNESS      25
274 #define BACKLIGHT_ENABLE        (1 << 31)
275
276 static const gdc_regs init_regs [] =
277 {
278         {0x0100, 0x00010f00},
279         {0x0020, 0x801901df},
280         {0x0024, 0x00000000},
281         {0x0028, 0x00000000},
282         {0x002c, 0x00000000},
283         {0x0110, 0x00000000},
284         {0x0114, 0x00000000},
285         {0x0118, 0x01df0320},
286         {0x0004, 0x041f0000},
287         {0x0008, 0x031f031f},
288         {0x000c, 0x017f0349},
289         {0x0010, 0x020c0000},
290         {0x0014, 0x01df01e9},
291         {0x0018, 0x00000000},
292         {0x001c, 0x01e00320},
293         {0x0100, 0x80010f00},
294         {0x0, 0x0}
295 };
296
297 const gdc_regs *board_get_regs (void)
298 {
299         return init_regs;
300 }
301
302 int lime_probe(void)
303 {
304         uint cfg_br2;
305         uint cfg_or2;
306         int type;
307
308         cfg_br2 = get_lbc_br(2);
309         cfg_or2 = get_lbc_or(2);
310
311         /* Configure GPCM for CS2 */
312         set_lbc_br(2, 0);
313         set_lbc_or(2, 0xfc000410);
314         set_lbc_br(2, (CONFIG_SYS_LIME_BASE) | 0x00001901);
315
316         /* Get controller type */
317         type = mb862xx_probe(CONFIG_SYS_LIME_BASE);
318
319         /* Restore previous CS2 configuration */
320         set_lbc_br(2, 0);
321         set_lbc_or(2, cfg_or2);
322         set_lbc_br(2, cfg_br2);
323
324         return (type == MB862XX_TYPE_LIME) ? 1 : 0;
325 }
326
327 /* Returns Lime base address */
328 unsigned int board_video_init (void)
329 {
330         if (!lime_probe())
331                 return 0;
332
333         mb862xx.winSizeX = 800;
334         mb862xx.winSizeY = 480;
335         mb862xx.gdfIndex = GDF_15BIT_555RGB;
336         mb862xx.gdfBytesPP = 2;
337
338         return CONFIG_SYS_LIME_BASE;
339 }
340
341 #define W83782D_REG_CFG         0x40
342 #define W83782D_REG_BANK_SEL    0x4e
343 #define W83782D_REG_ADCCLK      0x4b
344 #define W83782D_REG_BEEP_CTRL   0x4d
345 #define W83782D_REG_BEEP_CTRL2  0x57
346 #define W83782D_REG_PWMOUT1     0x5b
347 #define W83782D_REG_VBAT        0x5d
348
349 static int w83782d_hwmon_init(void)
350 {
351         u8 buf;
352
353         if (i2c_read(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_CFG, 1, &buf, 1))
354                 return -1;
355
356         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_CFG, 0x80);
357         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_BANK_SEL, 0);
358         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_ADCCLK, 0x40);
359
360         buf = i2c_reg_read(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_BEEP_CTRL);
361         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_BEEP_CTRL,
362                       buf | 0x80);
363         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_BEEP_CTRL2, 0);
364         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_PWMOUT1, 0x47);
365         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_VBAT, 0x01);
366
367         buf = i2c_reg_read(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_CFG);
368         i2c_reg_write(CONFIG_SYS_I2C_W83782G_ADDR, W83782D_REG_CFG,
369                       (buf & 0xf4) | 0x01);
370         return 0;
371 }
372
373 static void board_backlight_brightness(int br)
374 {
375         u32 reg;
376         u8 buf;
377         u8 old_buf;
378
379         /* Select bank 0 */
380         if (i2c_read(CONFIG_SYS_I2C_W83782G_ADDR, 0x4e, 1, &old_buf, 1))
381                 goto err;
382         else
383                 buf = old_buf & 0xf8;
384
385         if (i2c_write(CONFIG_SYS_I2C_W83782G_ADDR, 0x4e, 1, &buf, 1))
386                 goto err;
387
388         if (br > 0) {
389                 /* PWMOUT1 duty cycle ctrl */
390                 buf = 255 / (100 / br);
391                 if (i2c_write(CONFIG_SYS_I2C_W83782G_ADDR, 0x5b, 1, &buf, 1))
392                         goto err;
393
394                 /* LEDs on */
395                 reg = in_be32((void *)(CONFIG_SYS_FPGA_BASE + 0x0c));
396                 if (!(reg & BACKLIGHT_ENABLE));
397                         out_be32((void *)(CONFIG_SYS_FPGA_BASE + 0x0c),
398                                  reg | BACKLIGHT_ENABLE);
399         } else {
400                 buf = 0;
401                 if (i2c_write(CONFIG_SYS_I2C_W83782G_ADDR, 0x5b, 1, &buf, 1))
402                         goto err;
403
404                 /* LEDs off */
405                 reg = in_be32((void *)(CONFIG_SYS_FPGA_BASE + 0x0c));
406                 reg &= ~BACKLIGHT_ENABLE;
407                 out_be32((void *)(CONFIG_SYS_FPGA_BASE + 0x0c), reg);
408         }
409         /* Restore previous bank setting */
410         if (i2c_write(CONFIG_SYS_I2C_W83782G_ADDR, 0x4e, 1, &old_buf, 1))
411                 goto err;
412
413         return;
414 err:
415         printf("W83782G I2C access failed\n");
416 }
417
418 void board_backlight_switch (int flag)
419 {
420         char * param;
421         int rc;
422
423         if (w83782d_hwmon_init())
424                 printf ("hwmon IC init failed\n");
425
426         if (flag) {
427                 param = getenv("brightness");
428                 rc = param ? simple_strtol(param, NULL, 10) : -1;
429                 if (rc < 0)
430                         rc = DEFAULT_BRIGHTNESS;
431         } else {
432                 rc = 0;
433         }
434         board_backlight_brightness(rc);
435 }
436
437 #if defined(CONFIG_CONSOLE_EXTRA_INFO)
438 /*
439  * Return text to be printed besides the logo.
440  */
441 void video_get_info_str (int line_number, char *info)
442 {
443         if (line_number == 1) {
444                 strcpy (info, " Board: Socrates");
445         } else {
446                 info [0] = '\0';
447         }
448 }
449 #endif