1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * board/renesas/koelsch/koelsch_spl.c
4 *
5 * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com>
6 */
7
8 #include <common.h>
9 #include <cpu_func.h>
10 #include <init.h>
11 #include <malloc.h>
12 #include <dm/platform_data/serial_sh.h>
13 #include <asm/processor.h>
14 #include <asm/mach-types.h>
15 #include <asm/io.h>
16 #include <linux/bitops.h>
17 #include <linux/errno.h>
18 #include <asm/arch/sys_proto.h>
19 #include <asm/gpio.h>
20 #include <asm/arch/rmobile.h>
21 #include <asm/arch/rcar-mstp.h>
22
23 #include <spl.h>
24
25 #define TMU0_MSTP125 BIT(25)
26 #define SCIF0_MSTP721 BIT(21)
27 #define QSPI_MSTP917 BIT(17)
28
29 #define SD2CKCR 0xE615026C
30 #define SD_97500KHZ 0x7
31
32 struct reg_config {
33 u16 off;
34 u32 val;
35 };
36
dbsc_wait(u16 reg)37 static void dbsc_wait(u16 reg)
38 {
39 static const u32 dbsc3_0_base = DBSC3_0_BASE;
40 static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000;
41
42 while (!(readl(dbsc3_0_base + reg) & BIT(0)))
43 ;
44
45 while (!(readl(dbsc3_1_base + reg) & BIT(0)))
46 ;
47 }
48
spl_init_sys(void)49 static void spl_init_sys(void)
50 {
51 u32 r0 = 0;
52
53 writel(0xa5a5a500, 0xe6020004);
54 writel(0xa5a5a500, 0xe6030004);
55
56 asm volatile(
57 /* ICIALLU - Invalidate I$ to PoU */
58 "mcr 15, 0, %0, cr7, cr5, 0 \n"
59 /* BPIALL - Invalidate branch predictors */
60 "mcr 15, 0, %0, cr7, cr5, 6 \n"
61 /* Set SCTLR[IZ] */
62 "mrc 15, 0, %0, cr1, cr0, 0 \n"
63 "orr %0, #0x1800 \n"
64 "mcr 15, 0, %0, cr1, cr0, 0 \n"
65 "isb sy \n"
66 :"=r"(r0));
67 }
68
spl_init_pfc(void)69 static void spl_init_pfc(void)
70 {
71 static const struct reg_config pfc_with_unlock[] = {
72 { 0x0090, 0x60000000 },
73 { 0x0094, 0x60000000 },
74 { 0x0098, 0x00800200 },
75 { 0x009c, 0x00000000 },
76 { 0x0020, 0x00000000 },
77 { 0x0024, 0x00000000 },
78 { 0x0028, 0x000244c8 },
79 { 0x002c, 0x00000000 },
80 { 0x0030, 0x00002400 },
81 { 0x0034, 0x01520000 },
82 { 0x0038, 0x00724003 },
83 { 0x003c, 0x00000000 },
84 { 0x0040, 0x00000000 },
85 { 0x0044, 0x00000000 },
86 { 0x0048, 0x00000000 },
87 { 0x004c, 0x00000000 },
88 { 0x0050, 0x00000000 },
89 { 0x0054, 0x00000000 },
90 { 0x0058, 0x00000000 },
91 { 0x005c, 0x00000000 },
92 { 0x0160, 0x00000000 },
93 { 0x0004, 0xffffffff },
94 { 0x0008, 0x00ec3fff },
95 { 0x000c, 0x3bc001e7 },
96 { 0x0010, 0x5bffffff },
97 { 0x0014, 0x1ffffffb },
98 { 0x0018, 0x01bffff0 },
99 { 0x001c, 0xcf7fffff },
100 { 0x0074, 0x0381fc00 },
101 };
102
103 static const struct reg_config pfc_without_unlock[] = {
104 { 0x0100, 0xffffffdf },
105 { 0x0104, 0xc883c3ff },
106 { 0x0108, 0x1201f3c9 },
107 { 0x010c, 0x00000000 },
108 { 0x0110, 0xffffeb04 },
109 { 0x0114, 0xc003ffff },
110 { 0x0118, 0x0800000f },
111 { 0x011c, 0x001800f0 },
112 };
113
114 static const u32 pfc_base = 0xe6060000;
115
116 unsigned int i;
117
118 for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) {
119 writel(~pfc_with_unlock[i].val, pfc_base);
120 writel(pfc_with_unlock[i].val,
121 pfc_base | pfc_with_unlock[i].off);
122 }
123
124 for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++)
125 writel(pfc_without_unlock[i].val,
126 pfc_base | pfc_without_unlock[i].off);
127 }
128
spl_init_gpio(void)129 static void spl_init_gpio(void)
130 {
131 static const u16 gpio_offs[] = {
132 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x5400, 0x5800
133 };
134
135 static const struct reg_config gpio_set[] = {
136 { 0x2000, 0x04381000 },
137 { 0x5000, 0x00000000 },
138 { 0x5800, 0x000e0000 },
139
140 };
141
142 static const struct reg_config gpio_clr[] = {
143 { 0x1000, 0x00000000 },
144 { 0x2000, 0x04381010 },
145 { 0x3000, 0x00000000 },
146 { 0x4000, 0x00000000 },
147 { 0x5000, 0x00400000 },
148 { 0x5400, 0x00000000 },
149 { 0x5800, 0x000e0380 },
150 };
151
152 static const u32 gpio_base = 0xe6050000;
153
154 unsigned int i;
155
156 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
157 writel(0, gpio_base | 0x20 | gpio_offs[i]);
158
159 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
160 writel(0, gpio_base | 0x00 | gpio_offs[i]);
161
162 for (i = 0; i < ARRAY_SIZE(gpio_set); i++)
163 writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off);
164
165 for (i = 0; i < ARRAY_SIZE(gpio_clr); i++)
166 writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off);
167 }
168
spl_init_lbsc(void)169 static void spl_init_lbsc(void)
170 {
171 static const struct reg_config lbsc_config[] = {
172 { 0x00, 0x00000020 },
173 { 0x08, 0x00002020 },
174 { 0x30, 0x2a103320 },
175 { 0x38, 0xff70ff70 },
176 };
177
178 static const u16 lbsc_offs[] = {
179 0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8, 0x180
180 };
181
182 static const u32 lbsc_base = 0xfec00200;
183
184 unsigned int i;
185
186 for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) {
187 writel(lbsc_config[i].val,
188 lbsc_base | lbsc_config[i].off);
189 writel(lbsc_config[i].val,
190 lbsc_base | (lbsc_config[i].off + 4));
191 }
192
193 for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++)
194 writel(0, lbsc_base | lbsc_offs[i]);
195 }
196
spl_init_dbsc(void)197 static void spl_init_dbsc(void)
198 {
199 static const struct reg_config dbsc_config1[] = {
200 { 0x0018, 0x21000000 },
201 { 0x0018, 0x11000000 },
202 { 0x0018, 0x10000000 },
203 { 0x0280, 0x0000a55a },
204 { 0x0290, 0x00000010 },
205 { 0x02a0, 0xf004649b },
206 { 0x0020, 0x00000007 },
207 { 0x0024, 0x0f030a02 },
208 { 0x0030, 0x00000001 },
209 { 0x00b0, 0x00000000 },
210 { 0x0040, 0x0000000b },
211 { 0x0044, 0x00000008 },
212 { 0x0048, 0x00000000 },
213 { 0x0050, 0x0000000b },
214 { 0x0054, 0x000c000b },
215 { 0x0058, 0x00000027 },
216 { 0x005c, 0x0000001c },
217 { 0x0060, 0x00000006 },
218 { 0x0064, 0x00000020 },
219 { 0x0068, 0x00000008 },
220 { 0x006c, 0x0000000c },
221 { 0x0070, 0x00000009 },
222 { 0x0074, 0x00000012 },
223 { 0x0078, 0x000000d0 },
224 { 0x007c, 0x00140005 },
225 { 0x0080, 0x00050004 },
226 { 0x0084, 0x70233005 },
227 { 0x0088, 0x000c0000 },
228 { 0x008c, 0x00000300 },
229 { 0x0090, 0x00000040 },
230 { 0x0100, 0x00000001 },
231 { 0x00c0, 0x00020001 },
232 { 0x00c8, 0x20082008 },
233 { 0x0380, 0x00020002 },
234 { 0x0390, 0x0000001f },
235 };
236
237 static const struct reg_config dbsc_config5[] = {
238 { 0x0244, 0x00000011 },
239 { 0x0290, 0x00000006 },
240 { 0x02a0, 0x0005c000 },
241 { 0x0290, 0x00000003 },
242 { 0x02a0, 0x0300c481 },
243 { 0x0290, 0x00000023 },
244 { 0x02a0, 0x00fdb6c0 },
245 { 0x0290, 0x00000011 },
246 { 0x02a0, 0x1000040b },
247 { 0x0290, 0x00000012 },
248 { 0x02a0, 0x9d9cbb66 },
249 { 0x0290, 0x00000013 },
250 { 0x02a0, 0x1a868400 },
251 { 0x0290, 0x00000014 },
252 { 0x02a0, 0x300214d8 },
253 { 0x0290, 0x00000015 },
254 { 0x02a0, 0x00000d70 },
255 { 0x0290, 0x00000016 },
256 { 0x02a0, 0x00000006 },
257 { 0x0290, 0x00000017 },
258 { 0x02a0, 0x00000018 },
259 { 0x0290, 0x0000001a },
260 { 0x02a0, 0x910035c7 },
261 { 0x0290, 0x00000004 },
262 };
263
264 static const struct reg_config dbsc_config6[] = {
265 { 0x0290, 0x00000001 },
266 { 0x02a0, 0x00000181 },
267 { 0x0018, 0x11000000 },
268 { 0x0290, 0x00000004 },
269 };
270
271 static const struct reg_config dbsc_config7[] = {
272 { 0x0290, 0x00000001 },
273 { 0x02a0, 0x0000fe01 },
274 { 0x0290, 0x00000004 },
275 };
276
277 static const struct reg_config dbsc_config8[] = {
278 { 0x0304, 0x00000000 },
279 { 0x00f4, 0x01004c20 },
280 { 0x00f8, 0x014000aa },
281 { 0x00e0, 0x00000140 },
282 { 0x00e4, 0x00081860 },
283 { 0x00e8, 0x00010000 },
284 { 0x0014, 0x00000001 },
285 { 0x0010, 0x00000001 },
286 { 0x0280, 0x00000000 },
287 };
288
289 static const u32 dbsc3_0_base = DBSC3_0_BASE;
290 static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000;
291 unsigned int i;
292
293 for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++) {
294 writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off);
295 writel(dbsc_config1[i].val, dbsc3_1_base | dbsc_config1[i].off);
296 }
297
298 dbsc_wait(0x240);
299
300 for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++) {
301 writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off);
302 writel(dbsc_config5[i].val, dbsc3_1_base | dbsc_config5[i].off);
303 }
304
305 dbsc_wait(0x2a0);
306
307 for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++) {
308 writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off);
309 writel(dbsc_config6[i].val, dbsc3_1_base | dbsc_config6[i].off);
310 }
311
312 dbsc_wait(0x2a0);
313
314 for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++) {
315 writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off);
316 writel(dbsc_config7[i].val, dbsc3_1_base | dbsc_config7[i].off);
317 }
318
319 dbsc_wait(0x2a0);
320
321 for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++) {
322 writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off);
323 writel(dbsc_config8[i].val, dbsc3_1_base | dbsc_config8[i].off);
324 }
325
326 }
327
spl_init_qspi(void)328 static void spl_init_qspi(void)
329 {
330 mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917);
331
332 static const u32 qspi_base = 0xe6b10000;
333
334 writeb(0x08, qspi_base + 0x00);
335 writeb(0x00, qspi_base + 0x01);
336 writeb(0x06, qspi_base + 0x02);
337 writeb(0x01, qspi_base + 0x0a);
338 writeb(0x00, qspi_base + 0x0b);
339 writeb(0x00, qspi_base + 0x0c);
340 writeb(0x00, qspi_base + 0x0d);
341 writeb(0x00, qspi_base + 0x0e);
342
343 writew(0xe080, qspi_base + 0x10);
344
345 writeb(0xc0, qspi_base + 0x18);
346 writeb(0x00, qspi_base + 0x18);
347 writeb(0x00, qspi_base + 0x08);
348 writeb(0x48, qspi_base + 0x00);
349 }
350
board_init_f(ulong dummy)351 void board_init_f(ulong dummy)
352 {
353 int i;
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
369 /* Unknown, likely ES1.0-specific delay */
370 for (i = 0; i < 100000; i++)
371 asm volatile("nop");
372
373 spl_init_dbsc();
374 spl_init_qspi();
375 }
376
spl_board_init(void)377 void spl_board_init(void)
378 {
379 /* UART clocks enabled and gd valid - init serial console */
380 preloader_console_init();
381 }
382
board_boot_order(u32 * spl_boot_list)383 void board_boot_order(u32 *spl_boot_list)
384 {
385 const u32 jtag_magic = 0x1337c0de;
386 const u32 load_magic = 0xb33fc0de;
387
388 /*
389 * If JTAG probe sets special word at 0xe6300020, then it must
390 * put U-Boot into RAM and SPL will start it from RAM.
391 */
392 if (readl(CONFIG_SPL_TEXT_BASE + 0x20) == jtag_magic) {
393 printf("JTAG boot detected!\n");
394
395 while (readl(CONFIG_SPL_TEXT_BASE + 0x24) != load_magic)
396 ;
397
398 spl_boot_list[0] = BOOT_DEVICE_RAM;
399 spl_boot_list[1] = BOOT_DEVICE_NONE;
400
401 return;
402 }
403
404 /* Boot from SPI NOR with YMODEM UART fallback. */
405 spl_boot_list[0] = BOOT_DEVICE_SPI;
406 spl_boot_list[1] = BOOT_DEVICE_UART;
407 spl_boot_list[2] = BOOT_DEVICE_NONE;
408 }
409
reset_cpu(ulong addr)410 void reset_cpu(ulong addr)
411 {
412 }
413