1 /*
2  * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS for A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307 USA
21  */
22 
23 #include <common.h>
24 #include <ioports.h>
25 #include <mpc83xx.h>
26 #include <i2c.h>
27 #include <miiphy.h>
28 #include <vsc7385.h>
29 #ifdef CONFIG_PCI
30 #include <asm/mpc8349_pci.h>
31 #include <pci.h>
32 #endif
33 #include <spd_sdram.h>
34 #include <asm/mmu.h>
35 #if defined(CONFIG_OF_LIBFDT)
36 #include <libfdt.h>
37 #endif
38 
39 #ifndef CONFIG_SPD_EEPROM
40 /*************************************************************************
41  *  fixed sdram init -- doesn't use serial presence detect.
42  ************************************************************************/
43 int fixed_sdram(void)
44 {
45 	volatile immap_t *im = (immap_t *) CFG_IMMR;
46 	u32 ddr_size;		/* The size of RAM, in bytes */
47 	u32 ddr_size_log2 = 0;
48 
49 	for (ddr_size = CFG_DDR_SIZE * 0x100000; ddr_size > 1; ddr_size >>= 1) {
50 		if (ddr_size & 1) {
51 			return -1;
52 		}
53 		ddr_size_log2++;
54 	}
55 
56 	im->sysconf.ddrlaw[0].ar =
57 	    LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
58 	im->sysconf.ddrlaw[0].bar = (CFG_DDR_SDRAM_BASE >> 12) & 0xfffff;
59 
60 	/* Only one CS0 for DDR */
61 	im->ddr.csbnds[0].csbnds = 0x0000000f;
62 	im->ddr.cs_config[0] = CFG_DDR_CONFIG;
63 
64 	debug("cs0_bnds = 0x%08x\n", im->ddr.csbnds[0].csbnds);
65 	debug("cs0_config = 0x%08x\n", im->ddr.cs_config[0]);
66 
67 	debug("DDR:bar=0x%08x\n", im->sysconf.ddrlaw[0].bar);
68 	debug("DDR:ar=0x%08x\n", im->sysconf.ddrlaw[0].ar);
69 
70 	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
71 	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;/* Was "2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT" */
72 	im->ddr.sdram_cfg = SDRAM_CFG_SREN | SDRAM_CFG_SDRAM_TYPE_DDR1;
73 	im->ddr.sdram_mode =
74 	    (0x0000 << SDRAM_MODE_ESD_SHIFT) | (0x0032 << SDRAM_MODE_SD_SHIFT);
75 	im->ddr.sdram_interval =
76 	    (0x0410 << SDRAM_INTERVAL_REFINT_SHIFT) | (0x0100 <<
77 						       SDRAM_INTERVAL_BSTOPRE_SHIFT);
78 	im->ddr.sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL;
79 
80 	udelay(200);
81 
82 	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
83 
84 	debug("DDR:timing_cfg_1=0x%08x\n", im->ddr.timing_cfg_1);
85 	debug("DDR:timing_cfg_2=0x%08x\n", im->ddr.timing_cfg_2);
86 	debug("DDR:sdram_mode=0x%08x\n", im->ddr.sdram_mode);
87 	debug("DDR:sdram_interval=0x%08x\n", im->ddr.sdram_interval);
88 	debug("DDR:sdram_cfg=0x%08x\n", im->ddr.sdram_cfg);
89 
90 	return CFG_DDR_SIZE;
91 }
92 #endif
93 
94 #ifdef CONFIG_PCI
95 /*
96  * Initialize PCI Devices, report devices found
97  */
98 #ifndef CONFIG_PCI_PNP
99 static struct pci_config_table pci_mpc83xxmitx_config_table[] = {
100 	{
101 	 PCI_ANY_ID,
102 	 PCI_ANY_ID,
103 	 PCI_ANY_ID,
104 	 PCI_ANY_ID,
105 	 0x0f,
106 	 PCI_ANY_ID,
107 	 pci_cfgfunc_config_device,
108 	 {
109 	  PCI_ENET0_IOADDR,
110 	  PCI_ENET0_MEMADDR,
111 	  PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}
112 	 },
113 	{}
114 }
115 #endif
116 
117 volatile static struct pci_controller hose[] = {
118 	{
119 #ifndef CONFIG_PCI_PNP
120 	      config_table:pci_mpc83xxmitx_config_table,
121 #endif
122 	 },
123 	{
124 #ifndef CONFIG_PCI_PNP
125 	      config_table:pci_mpc83xxmitx_config_table,
126 #endif
127 	 }
128 };
129 #endif				/* CONFIG_PCI */
130 
131 long int initdram(int board_type)
132 {
133 	volatile immap_t *im = (immap_t *) CFG_IMMR;
134 	u32 msize = 0;
135 #ifdef CONFIG_DDR_ECC
136 	volatile ddr83xx_t *ddr = &im->ddr;
137 #endif
138 
139 	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
140 		return -1;
141 
142 	/* DDR SDRAM - Main SODIMM */
143 	im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR;
144 #ifdef CONFIG_SPD_EEPROM
145 	msize = spd_sdram();
146 #else
147 	msize = fixed_sdram();
148 #endif
149 
150 #ifdef CONFIG_DDR_ECC
151 	if (ddr->sdram_cfg & SDRAM_CFG_ECC_EN)
152 		/* Unlike every other board, on the 83xx spd_sdram() returns
153 		   megabytes instead of just bytes.  That's why we need to
154 		   multiple by 1MB when calling ddr_enable_ecc(). */
155 		ddr_enable_ecc(msize * 1048576);
156 #endif
157 
158 	/* return total bus RAM size(bytes) */
159 	return msize * 1024 * 1024;
160 }
161 
162 int checkboard(void)
163 {
164 #ifdef CONFIG_MPC8349ITX
165 	puts("Board: Freescale MPC8349E-mITX\n");
166 #else
167 	puts("Board: Freescale MPC8349E-mITX-GP\n");
168 #endif
169 
170 	return 0;
171 }
172 
173 /*
174  * Implement a work-around for a hardware problem with compact
175  * flash.
176  *
177  * Program the UPM if compact flash is enabled.
178  */
179 int misc_init_f(void)
180 {
181 #ifdef CONFIG_VSC7385_ENET
182 	volatile u32 *vsc7385_cpuctrl;
183 
184 	/* 0x1c0c0 is the VSC7385 CPU Control (CPUCTRL) Register.  The power up
185 	   default of VSC7385 L1_IRQ and L2_IRQ requests are active high.  That
186 	   means it is 0 when the IRQ is not active.  This makes the wire-AND
187 	   logic always assert IRQ7 to CPU even if there is no request from the
188 	   switch.  Since the compact flash and the switch share the same IRQ,
189 	   the Linux kernel will think that the compact flash is requesting irq
190 	   and get stuck when it tries to clear the IRQ.  Thus we need to set
191 	   the L2_IRQ0 and L2_IRQ1 to active low.
192 
193 	   The following code sets the L1_IRQ and L2_IRQ polarity to active low.
194 	   Without this code, compact flash will not work in Linux because
195 	   unlike U-Boot, Linux uses the IRQ, so this code is necessary if we
196 	   don't enable compact flash for U-Boot.
197 	 */
198 
199 	vsc7385_cpuctrl = (volatile u32 *)(CFG_VSC7385_BASE + 0x1c0c0);
200 	*vsc7385_cpuctrl |= 0x0c;
201 #endif
202 
203 #ifdef CONFIG_COMPACT_FLASH
204 	/* UPM Table Configuration Code */
205 	static uint UPMATable[] = {
206 		0xcffffc00, 0x0fffff00, 0x0fafff00, 0x0fafff00,
207 		0x0faffd00, 0x0faffc04, 0x0ffffc00, 0x3ffffc01,
208 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
209 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
210 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfff7fc00,
211 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
212 		0xcffffc00, 0x0fffff00, 0x0ff3ff00, 0x0ff3ff00,
213 		0x0ff3fe00, 0x0ffffc00, 0x3ffffc05, 0xfffffc00,
214 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
215 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
216 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
217 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
218 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
219 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
220 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
221 		0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01
222 	};
223 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
224 	volatile lbus83xx_t *lbus = &immap->lbus;
225 
226 	lbus->bank[3].br = CFG_BR3_PRELIM;
227 	lbus->bank[3].or = CFG_OR3_PRELIM;
228 
229 	/* Program the MAMR. RFEN=0, OP=00, UWPL=1, AM=000, DS=01, G0CL=000,
230 	   GPL4=0, RLF=0001, WLF=0001, TLF=0001, MAD=000000
231 	 */
232 	lbus->mamr = 0x08404440;
233 
234 	upmconfig(0, UPMATable, sizeof(UPMATable) / sizeof(UPMATable[0]));
235 
236 	puts("UPMA:  Configured for compact flash\n");
237 #endif
238 
239 	return 0;
240 }
241 
242 /*
243  * Miscellaneous late-boot configurations
244  *
245  * Make sure the EEPROM has the HRCW correctly programmed.
246  * Make sure the RTC is correctly programmed.
247  *
248  * The MPC8349E-mITX can be configured to load the HRCW from
249  * EEPROM instead of flash.  This is controlled via jumpers
250  * LGPL0, 1, and 3.  Normally, these jumpers are set to 000 (all
251  * jumpered), but if they're set to 001 or 010, then the HRCW is
252  * read from the "I2C EEPROM".
253  *
254  * This function makes sure that the I2C EEPROM is programmed
255  * correctly.
256  *
257  * If a VSC7385 microcode image is present, then upload it.
258  */
259 int misc_init_r(void)
260 {
261 	int rc = 0;
262 
263 #ifdef CONFIG_HARD_I2C
264 
265 	unsigned int orig_bus = i2c_get_bus_num();
266 	u8 i2c_data;
267 
268 #ifdef CFG_I2C_RTC_ADDR
269 	u8 ds1339_data[17];
270 #endif
271 
272 #ifdef CFG_I2C_EEPROM_ADDR
273 	static u8 eeprom_data[] =	/* HRCW data */
274 	{
275 		0xAA, 0x55, 0xAA,       /* Preamble */
276 		0x7C, 		        /* ACS=0, BYTE_EN=1111, CONT=1 */
277 		0x02, 0x40, 	        /* RCWL ADDR=0x0_0900 */
278 		(CFG_HRCW_LOW >> 24) & 0xFF,
279 		(CFG_HRCW_LOW >> 16) & 0xFF,
280 		(CFG_HRCW_LOW >> 8) & 0xFF,
281 		CFG_HRCW_LOW & 0xFF,
282 		0x7C, 		        /* ACS=0, BYTE_EN=1111, CONT=1 */
283 		0x02, 0x41,	        /* RCWH ADDR=0x0_0904 */
284 		(CFG_HRCW_HIGH >> 24) & 0xFF,
285 		(CFG_HRCW_HIGH >> 16) & 0xFF,
286 		(CFG_HRCW_HIGH >> 8) & 0xFF,
287 		CFG_HRCW_HIGH & 0xFF
288 	};
289 
290 	u8 data[sizeof(eeprom_data)];
291 #endif
292 
293 	printf("Board revision: ");
294 	i2c_set_bus_num(1);
295 	if (i2c_read(CFG_I2C_8574A_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data)) == 0)
296 		printf("%u.%u (PCF8475A)\n", (i2c_data & 0x02) >> 1, i2c_data & 0x01);
297 	else if (i2c_read(CFG_I2C_8574_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data)) == 0)
298 		printf("%u.%u (PCF8475)\n",  (i2c_data & 0x02) >> 1, i2c_data & 0x01);
299 	else {
300 		printf("Unknown\n");
301 		rc = 1;
302 	}
303 
304 #ifdef CFG_I2C_EEPROM_ADDR
305 	i2c_set_bus_num(0);
306 
307 	if (i2c_read(CFG_I2C_EEPROM_ADDR, 0, 2, data, sizeof(data)) == 0) {
308 		if (memcmp(data, eeprom_data, sizeof(data)) != 0) {
309 			if (i2c_write
310 			    (CFG_I2C_EEPROM_ADDR, 0, 2, eeprom_data,
311 			     sizeof(eeprom_data)) != 0) {
312 				puts("Failure writing the HRCW to EEPROM via I2C.\n");
313 				rc = 1;
314 			}
315 		}
316 	} else {
317 		puts("Failure reading the HRCW from EEPROM via I2C.\n");
318 		rc = 1;
319 	}
320 #endif
321 
322 #ifdef CFG_I2C_RTC_ADDR
323 	i2c_set_bus_num(1);
324 
325 	if (i2c_read(CFG_I2C_RTC_ADDR, 0, 1, ds1339_data, sizeof(ds1339_data))
326 	    == 0) {
327 
328 		/* Work-around for MPC8349E-mITX bug #13601.
329 		   If the RTC does not contain valid register values, the DS1339
330 		   Linux driver will not work.
331 		 */
332 
333 		/* Make sure status register bits 6-2 are zero */
334 		ds1339_data[0x0f] &= ~0x7c;
335 
336 		/* Check for a valid day register value */
337 		ds1339_data[0x03] &= ~0xf8;
338 		if (ds1339_data[0x03] == 0) {
339 			ds1339_data[0x03] = 1;
340 		}
341 
342 		/* Check for a valid date register value */
343 		ds1339_data[0x04] &= ~0xc0;
344 		if ((ds1339_data[0x04] == 0) ||
345 		    ((ds1339_data[0x04] & 0x0f) > 9) ||
346 		    (ds1339_data[0x04] >= 0x32)) {
347 			ds1339_data[0x04] = 1;
348 		}
349 
350 		/* Check for a valid month register value */
351 		ds1339_data[0x05] &= ~0x60;
352 
353 		if ((ds1339_data[0x05] == 0) ||
354 		    ((ds1339_data[0x05] & 0x0f) > 9) ||
355 		    ((ds1339_data[0x05] >= 0x13)
356 		     && (ds1339_data[0x05] <= 0x19))) {
357 			ds1339_data[0x05] = 1;
358 		}
359 
360 		/* Enable Oscillator and rate select */
361 		ds1339_data[0x0e] = 0x1c;
362 
363 		/* Work-around for MPC8349E-mITX bug #13330.
364 		   Ensure that the RTC control register contains the value 0x1c.
365 		   This affects SATA performance.
366 		 */
367 
368 		if (i2c_write
369 		    (CFG_I2C_RTC_ADDR, 0, 1, ds1339_data,
370 		     sizeof(ds1339_data))) {
371 			puts("Failure writing to the RTC via I2C.\n");
372 			rc = 1;
373 		}
374 	} else {
375 		puts("Failure reading from the RTC via I2C.\n");
376 		rc = 1;
377 	}
378 #endif
379 
380 	i2c_set_bus_num(orig_bus);
381 #endif
382 
383 #ifdef CONFIG_VSC7385_IMAGE
384 	if (vsc7385_upload_firmware((void *) CONFIG_VSC7385_IMAGE,
385 		CONFIG_VSC7385_IMAGE_SIZE)) {
386 		puts("Failure uploading VSC7385 microcode.\n");
387 		rc = 1;
388 	}
389 #endif
390 
391 	return rc;
392 }
393 
394 #if defined(CONFIG_OF_BOARD_SETUP)
395 void ft_board_setup(void *blob, bd_t *bd)
396 {
397 	ft_cpu_setup(blob, bd);
398 #ifdef CONFIG_PCI
399 	ft_pci_setup(blob, bd);
400 #endif
401 }
402 #endif
403