1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * board/renesas/gose/gose_spl.c
4 *
5 * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com>
6 */
7
8 #include <common.h>
9 #include <malloc.h>
10 #include <dm/platform_data/serial_sh.h>
11 #include <asm/processor.h>
12 #include <asm/mach-types.h>
13 #include <asm/io.h>
14 #include <linux/errno.h>
15 #include <asm/arch/sys_proto.h>
16 #include <asm/gpio.h>
17 #include <asm/arch/rmobile.h>
18 #include <asm/arch/rcar-mstp.h>
19
20 #include <spl.h>
21
22 #define TMU0_MSTP125 BIT(25)
23 #define SCIF0_MSTP721 BIT(21)
24 #define QSPI_MSTP917 BIT(17)
25
26 #define SD2CKCR 0xE615026C
27 #define SD_97500KHZ 0x7
28
29 struct reg_config {
30 u16 off;
31 u32 val;
32 };
33
dbsc_wait(u16 reg)34 static void dbsc_wait(u16 reg)
35 {
36 static const u32 dbsc3_0_base = DBSC3_0_BASE;
37
38 while (!(readl(dbsc3_0_base + reg) & BIT(0)))
39 ;
40 }
41
spl_init_sys(void)42 static void spl_init_sys(void)
43 {
44 u32 r0 = 0;
45
46 writel(0xa5a5a500, 0xe6020004);
47 writel(0xa5a5a500, 0xe6030004);
48
49 asm volatile(
50 /* ICIALLU - Invalidate I$ to PoU */
51 "mcr 15, 0, %0, cr7, cr5, 0 \n"
52 /* BPIALL - Invalidate branch predictors */
53 "mcr 15, 0, %0, cr7, cr5, 6 \n"
54 /* Set SCTLR[IZ] */
55 "mrc 15, 0, %0, cr1, cr0, 0 \n"
56 "orr %0, #0x1800 \n"
57 "mcr 15, 0, %0, cr1, cr0, 0 \n"
58 "isb sy \n"
59 :"=r"(r0));
60 }
61
spl_init_pfc(void)62 static void spl_init_pfc(void)
63 {
64 static const struct reg_config pfc_with_unlock[] = {
65 { 0x0090, 0x60000000 },
66 { 0x0094, 0x60000000 },
67 { 0x0098, 0x00800200 },
68 { 0x009c, 0x00000000 },
69 { 0x0020, 0x00000000 },
70 { 0x0024, 0x00000000 },
71 { 0x0028, 0x000244c8 },
72 { 0x002c, 0x00000000 },
73 { 0x0030, 0x00002400 },
74 { 0x0034, 0x01520000 },
75 { 0x0038, 0x00724003 },
76 { 0x003c, 0x00000000 },
77 { 0x0040, 0x00000000 },
78 { 0x0044, 0x00000000 },
79 { 0x0048, 0x00000000 },
80 { 0x004c, 0x00000000 },
81 { 0x0050, 0x00000000 },
82 { 0x0054, 0x00000000 },
83 { 0x0058, 0x00000000 },
84 { 0x005c, 0x00000000 },
85 { 0x0160, 0x00000000 },
86 { 0x0004, 0xffffffff },
87 { 0x0008, 0x00ec3fff },
88 { 0x000c, 0x3bc001e7 },
89 { 0x0010, 0x5bffffff },
90 { 0x0014, 0x1ffffffb },
91 { 0x0018, 0x01bffff0 },
92 { 0x001c, 0xcf7fffff },
93 { 0x0074, 0x0381fc00 },
94 };
95
96 static const struct reg_config pfc_without_unlock[] = {
97 { 0x0100, 0xffffffdf },
98 { 0x0104, 0xc883c3ff },
99 { 0x0108, 0x1201f3c9 },
100 { 0x010c, 0x00000000 },
101 { 0x0110, 0xffffeb04 },
102 { 0x0114, 0xc003ffff },
103 { 0x0118, 0x0800000f },
104 { 0x011c, 0x001800f0 },
105 };
106
107 static const u32 pfc_base = 0xe6060000;
108
109 unsigned int i;
110
111 for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) {
112 writel(~pfc_with_unlock[i].val, pfc_base);
113 writel(pfc_with_unlock[i].val,
114 pfc_base | pfc_with_unlock[i].off);
115 }
116
117 for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++)
118 writel(pfc_without_unlock[i].val,
119 pfc_base | pfc_without_unlock[i].off);
120 }
121
spl_init_gpio(void)122 static void spl_init_gpio(void)
123 {
124 static const u16 gpio_offs[] = {
125 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x5400, 0x5800
126 };
127
128 static const struct reg_config gpio_set[] = {
129 { 0x2000, 0x04381000 },
130 { 0x5000, 0x00000000 },
131 { 0x5800, 0x000e0000 },
132 };
133
134 static const struct reg_config gpio_clr[] = {
135 { 0x1000, 0x00000000 },
136 { 0x2000, 0x04381010 },
137 { 0x3000, 0x00000000 },
138 { 0x4000, 0x00000000 },
139 { 0x5000, 0x00400000 },
140 { 0x5400, 0x00000000 },
141 { 0x5800, 0x000e0380 },
142 };
143
144 static const u32 gpio_base = 0xe6050000;
145
146 unsigned int i;
147
148 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
149 writel(0, gpio_base | 0x20 | gpio_offs[i]);
150
151 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
152 writel(0, gpio_base | 0x00 | gpio_offs[i]);
153
154 for (i = 0; i < ARRAY_SIZE(gpio_set); i++)
155 writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off);
156
157 for (i = 0; i < ARRAY_SIZE(gpio_clr); i++)
158 writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off);
159 }
160
spl_init_lbsc(void)161 static void spl_init_lbsc(void)
162 {
163 static const struct reg_config lbsc_config[] = {
164 { 0x00, 0x00000020 },
165 { 0x08, 0x00002020 },
166 { 0x30, 0x2a103320 },
167 { 0x38, 0xff70ff70 },
168 };
169
170 static const u16 lbsc_offs[] = {
171 0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8, 0x180
172 };
173
174 static const u32 lbsc_base = 0xfec00200;
175
176 unsigned int i;
177
178 for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) {
179 writel(lbsc_config[i].val,
180 lbsc_base | lbsc_config[i].off);
181 writel(lbsc_config[i].val,
182 lbsc_base | (lbsc_config[i].off + 4));
183 }
184
185 for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++)
186 writel(0, lbsc_base | lbsc_offs[i]);
187 }
188
spl_init_dbsc(void)189 static void spl_init_dbsc(void)
190 {
191 static const struct reg_config dbsc_config1[] = {
192 { 0x0280, 0x0000a55a },
193 { 0x0018, 0x21000000 },
194 { 0x0018, 0x11000000 },
195 { 0x0018, 0x10000000 },
196 { 0x0290, 0x00000001 },
197 { 0x02a0, 0x80000000 },
198 { 0x0290, 0x00000004 },
199 };
200
201 static const struct reg_config dbsc_config2[] = {
202 { 0x0290, 0x00000006 },
203 { 0x02a0, 0x0001c000 },
204 };
205
206 static const struct reg_config dbsc_config4[] = {
207 { 0x0290, 0x00000010 },
208 { 0x02a0, 0xf00464db },
209 { 0x0290, 0x00000061 },
210 { 0x02a0, 0x0000006d },
211 { 0x0290, 0x00000001 },
212 { 0x02a0, 0x00000073 },
213 { 0x0020, 0x00000007 },
214 { 0x0024, 0x0f030a02 },
215 { 0x0030, 0x00000001 },
216 { 0x00b0, 0x00000000 },
217 { 0x0040, 0x0000000b },
218 { 0x0044, 0x00000008 },
219 { 0x0048, 0x00000000 },
220 { 0x0050, 0x0000000b },
221 { 0x0054, 0x000c000b },
222 { 0x0058, 0x00000027 },
223 { 0x005c, 0x0000001c },
224 { 0x0060, 0x00000006 },
225 { 0x0064, 0x00000020 },
226 { 0x0068, 0x00000008 },
227 { 0x006c, 0x0000000c },
228 { 0x0070, 0x00000009 },
229 { 0x0074, 0x00000012 },
230 { 0x0078, 0x000000d0 },
231 { 0x007c, 0x00140005 },
232 { 0x0080, 0x00050004 },
233 { 0x0084, 0x70233005 },
234 { 0x0088, 0x000c0000 },
235 { 0x008c, 0x00000200 },
236 { 0x0090, 0x00000040 },
237 { 0x0100, 0x00000001 },
238 { 0x00c0, 0x00020001 },
239 { 0x00c8, 0x20042004 },
240 { 0x0380, 0x00020002 },
241 { 0x0390, 0x0000001f },
242 };
243
244 static const struct reg_config dbsc_config5[] = {
245 { 0x0244, 0x00000011 },
246 { 0x0290, 0x00000003 },
247 { 0x02a0, 0x0300c561 },
248 { 0x0290, 0x00000023 },
249 { 0x02a0, 0x00fcdb60 },
250 { 0x0290, 0x00000011 },
251 { 0x02a0, 0x1000040b },
252 { 0x0290, 0x00000012 },
253 { 0x02a0, 0x9d9cbb66 },
254 { 0x0290, 0x00000013 },
255 { 0x02a0, 0x1a868400 },
256 { 0x0290, 0x00000014 },
257 { 0x02a0, 0x300214d8 },
258 { 0x0290, 0x00000015 },
259 { 0x02a0, 0x00000d70 },
260 { 0x0290, 0x00000016 },
261 { 0x02a0, 0x00000006 },
262 { 0x0290, 0x00000017 },
263 { 0x02a0, 0x00000018 },
264 { 0x0290, 0x0000001a },
265 { 0x02a0, 0x910035c7 },
266 { 0x0290, 0x00000004 },
267 };
268
269 static const struct reg_config dbsc_config6[] = {
270 { 0x0290, 0x00000001 },
271 { 0x02a0, 0x00000181 },
272 { 0x0018, 0x11000000 },
273 { 0x0290, 0x00000004 },
274 };
275
276 static const struct reg_config dbsc_config7[] = {
277 { 0x0290, 0x00000001 },
278 { 0x02a0, 0x0000fe01 },
279 { 0x0304, 0x00000000 },
280 { 0x00f4, 0x01004c20 },
281 { 0x00f8, 0x014000aa },
282 { 0x00e0, 0x00000140 },
283 { 0x00e4, 0x00081860 },
284 { 0x00e8, 0x00010000 },
285 { 0x0290, 0x00000004 },
286 };
287
288 static const struct reg_config dbsc_config8[] = {
289 { 0x0014, 0x00000001 },
290 { 0x0010, 0x00000001 },
291 { 0x0280, 0x00000000 },
292 };
293
294 static const u32 dbsc3_0_base = DBSC3_0_BASE;
295 unsigned int i;
296
297 for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++)
298 writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off);
299
300 dbsc_wait(0x2a0);
301
302 for (i = 0; i < ARRAY_SIZE(dbsc_config2); i++)
303 writel(dbsc_config2[i].val, dbsc3_0_base | dbsc_config2[i].off);
304
305 for (i = 0; i < ARRAY_SIZE(dbsc_config4); i++)
306 writel(dbsc_config4[i].val, dbsc3_0_base | dbsc_config4[i].off);
307
308 dbsc_wait(0x240);
309
310 for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++)
311 writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off);
312
313 dbsc_wait(0x2a0);
314
315 for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++)
316 writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off);
317
318 dbsc_wait(0x2a0);
319
320 for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++)
321 writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off);
322
323 dbsc_wait(0x2a0);
324
325 for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++)
326 writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off);
327
328 }
329
spl_init_qspi(void)330 static void spl_init_qspi(void)
331 {
332 mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917);
333
334 static const u32 qspi_base = 0xe6b10000;
335
336 writeb(0x08, qspi_base + 0x00);
337 writeb(0x00, qspi_base + 0x01);
338 writeb(0x06, qspi_base + 0x02);
339 writeb(0x01, qspi_base + 0x0a);
340 writeb(0x00, qspi_base + 0x0b);
341 writeb(0x00, qspi_base + 0x0c);
342 writeb(0x00, qspi_base + 0x0d);
343 writeb(0x00, qspi_base + 0x0e);
344
345 writew(0xe080, qspi_base + 0x10);
346
347 writeb(0xc0, qspi_base + 0x18);
348 writeb(0x00, qspi_base + 0x18);
349 writeb(0x00, qspi_base + 0x08);
350 writeb(0x48, qspi_base + 0x00);
351 }
352
board_init_f(ulong dummy)353 void board_init_f(ulong dummy)
354 {
355 mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
356 mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721);
357
358 /*
359 * SD0 clock is set to 97.5MHz by default.
360 * Set SD2 to the 97.5MHz as well.
361 */
362 writel(SD_97500KHZ, SD2CKCR);
363
364 spl_init_sys();
365 spl_init_pfc();
366 spl_init_gpio();
367 spl_init_lbsc();
368 spl_init_dbsc();
369 spl_init_qspi();
370 }
371
spl_board_init(void)372 void spl_board_init(void)
373 {
374 /* UART clocks enabled and gd valid - init serial console */
375 preloader_console_init();
376 }
377
board_boot_order(u32 * spl_boot_list)378 void board_boot_order(u32 *spl_boot_list)
379 {
380 const u32 jtag_magic = 0x1337c0de;
381 const u32 load_magic = 0xb33fc0de;
382
383 /*
384 * If JTAG probe sets special word at 0xe6300020, then it must
385 * put U-Boot into RAM and SPL will start it from RAM.
386 */
387 if (readl(CONFIG_SPL_TEXT_BASE + 0x20) == jtag_magic) {
388 printf("JTAG boot detected!\n");
389
390 while (readl(CONFIG_SPL_TEXT_BASE + 0x24) != load_magic)
391 ;
392
393 spl_boot_list[0] = BOOT_DEVICE_RAM;
394 spl_boot_list[1] = BOOT_DEVICE_NONE;
395
396 return;
397 }
398
399 /* Boot from SPI NOR with YMODEM UART fallback. */
400 spl_boot_list[0] = BOOT_DEVICE_SPI;
401 spl_boot_list[1] = BOOT_DEVICE_UART;
402 spl_boot_list[2] = BOOT_DEVICE_NONE;
403 }
404
reset_cpu(ulong addr)405 void reset_cpu(ulong addr)
406 {
407 }
408