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83d290c5 1// SPDX-License-Identifier: GPL-2.0
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2/*
3 * board/renesas/silk/silk_spl.c
4 *
5 * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com>
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6 */
7
9a3b4ceb 8#include <cpu_func.h>
691d719d 9#include <init.h>
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10#include <malloc.h>
11#include <dm/platform_data/serial_sh.h>
12#include <asm/processor.h>
13#include <asm/mach-types.h>
14#include <asm/io.h>
cd93d625 15#include <linux/bitops.h>
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16#include <linux/errno.h>
17#include <asm/arch/sys_proto.h>
18#include <asm/gpio.h>
19#include <asm/arch/rmobile.h>
20#include <asm/arch/rcar-mstp.h>
21
22#include <spl.h>
23
24#define TMU0_MSTP125 BIT(25)
25#define SCIF2_MSTP719 BIT(19)
26#define QSPI_MSTP917 BIT(17)
27
28#define SD1CKCR 0xE6150078
29#define SD_97500KHZ 0x7
30
31struct reg_config {
32 u16 off;
33 u32 val;
34};
35
36static void dbsc_wait(u16 reg)
37{
38 static const u32 dbsc3_0_base = DBSC3_0_BASE;
39
40 while (!(readl(dbsc3_0_base + reg) & BIT(0)))
41 ;
42}
43
44static void spl_init_sys(void)
45{
46 u32 r0 = 0;
47
48 writel(0xa5a5a500, 0xe6020004);
49 writel(0xa5a5a500, 0xe6030004);
50
51 asm volatile(
52 /* ICIALLU - Invalidate I$ to PoU */
53 "mcr 15, 0, %0, cr7, cr5, 0 \n"
54 /* BPIALL - Invalidate branch predictors */
55 "mcr 15, 0, %0, cr7, cr5, 6 \n"
56 /* Set SCTLR[IZ] */
57 "mrc 15, 0, %0, cr1, cr0, 0 \n"
58 "orr %0, #0x1800 \n"
59 "mcr 15, 0, %0, cr1, cr0, 0 \n"
60 "isb sy \n"
61 :"=r"(r0));
62}
63
64static void spl_init_pfc(void)
65{
66 static const struct reg_config pfc_with_unlock[] = {
67 { 0x0090, 0x00018040 },
68 { 0x0094, 0x00000000 },
69 { 0x0098, 0x00000000 },
70 { 0x0020, 0x94000000 },
71 { 0x0024, 0x00000006 },
72 { 0x0028, 0x40000000 },
73 { 0x002c, 0x00000155 },
74 { 0x0030, 0x00000002 },
75 { 0x0034, 0x00000000 },
76 { 0x0038, 0x00000000 },
77 { 0x003c, 0x00000000 },
78 { 0x0040, 0x60000000 },
79 { 0x0044, 0x36dab6db },
80 { 0x0048, 0x926da012 },
81 { 0x004c, 0x0008c383 },
82 { 0x0050, 0x00000000 },
83 { 0x0054, 0x00000140 },
84 { 0x0004, 0xffffffff },
85 { 0x0008, 0x00ec3fff },
86 { 0x000c, 0x5bffffff },
87 { 0x0010, 0x01bfe1ff },
88 { 0x0014, 0x5bffffff },
89 { 0x0018, 0x0f4b200f },
90 { 0x001c, 0x03ffffff },
91 };
92
93 static const struct reg_config pfc_without_unlock[] = {
94 { 0x0100, 0x00000000 },
95 { 0x0104, 0x4203fdf0 },
96 { 0x0108, 0x00000000 },
97 { 0x010c, 0x159007ff },
98 { 0x0110, 0x80000000 },
99 { 0x0114, 0x00de481f },
100 { 0x0118, 0x00000000 },
101 };
102
103 static const struct reg_config pfc_with_unlock2[] = {
104 { 0x0060, 0xffffffff },
105 { 0x0064, 0xfffff000 },
106 { 0x0068, 0x55555500 },
107 { 0x006c, 0xffffff00 },
108 { 0x0070, 0x00000000 },
109 };
110
111 static const u32 pfc_base = 0xe6060000;
112
113 unsigned int i;
114
115 for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) {
116 writel(~pfc_with_unlock[i].val, pfc_base);
117 writel(pfc_with_unlock[i].val,
118 pfc_base | pfc_with_unlock[i].off);
119 }
120
121 for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++)
122 writel(pfc_without_unlock[i].val,
123 pfc_base | pfc_without_unlock[i].off);
124
125 for (i = 0; i < ARRAY_SIZE(pfc_with_unlock2); i++) {
126 writel(~pfc_with_unlock2[i].val, pfc_base);
127 writel(pfc_with_unlock2[i].val,
128 pfc_base | pfc_with_unlock2[i].off);
129 }
130}
131
132static void spl_init_gpio(void)
133{
134 static const u16 gpio_offs[] = {
135 0x1000, 0x2000, 0x3000, 0x4000
136 };
137
138 static const struct reg_config gpio_set[] = {
139 { 0x2000, 0x24000000 },
140 { 0x4000, 0xa4000000 },
141 { 0x5000, 0x0084c000 },
142 };
143
144 static const struct reg_config gpio_clr[] = {
145 { 0x1000, 0x01000000 },
146 { 0x2000, 0x24000000 },
147 { 0x3000, 0x00000000 },
148 { 0x4000, 0xa4000000 },
149 { 0x5000, 0x00044380 },
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 writel(BIT(23), gpio_base | 0x5020);
159
160 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
161 writel(0, gpio_base | 0x00 | gpio_offs[i]);
162 writel(BIT(23), gpio_base | 0x5000);
163
164 for (i = 0; i < ARRAY_SIZE(gpio_set); i++)
165 writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off);
166
167 for (i = 0; i < ARRAY_SIZE(gpio_clr); i++)
168 writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off);
169}
170
171static void spl_init_lbsc(void)
172{
173 static const struct reg_config lbsc_config[] = {
174 { 0x00, 0x00000020 },
175 { 0x08, 0x00002020 },
176 { 0x30, 0x2a103320 },
177 { 0x38, 0xff70ff70 },
178 };
179
180 static const u16 lbsc_offs[] = {
181 0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8
182 };
183
184 static const u32 lbsc_base = 0xfec00200;
185
186 unsigned int i;
187
188 for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) {
189 writel(lbsc_config[i].val,
190 lbsc_base | lbsc_config[i].off);
191 writel(lbsc_config[i].val,
192 lbsc_base | (lbsc_config[i].off + 4));
193 }
194
195 for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++)
196 writel(0, lbsc_base | lbsc_offs[i]);
197}
198
199static void spl_init_dbsc(void)
200{
201 static const struct reg_config dbsc_config1[] = {
202 { 0x0018, 0x21000000 },
203 { 0x0018, 0x11000000 },
204 { 0x0018, 0x10000000 },
205 { 0x0280, 0x0000a55a },
206 { 0x0290, 0x00000001 },
207 { 0x02a0, 0x80000000 },
208 { 0x0290, 0x00000004 },
209 };
210
211 static const struct reg_config dbsc_config2[] = {
212 { 0x0290, 0x00000006 },
213 { 0x02a0, 0x0005c000 },
214 };
215
216 static const struct reg_config dbsc_config3r2[] = {
217 { 0x0290, 0x0000000f },
218 { 0x02a0, 0x00181224 },
219 };
220
221 static const struct reg_config dbsc_config4[] = {
222 { 0x0290, 0x00000010 },
223 { 0x02a0, 0xf004649b },
224 { 0x0290, 0x00000061 },
225 { 0x02a0, 0x0000006d },
226 { 0x0290, 0x00000001 },
227 { 0x02a0, 0x00000073 },
228 { 0x0020, 0x00000007 },
229 { 0x0024, 0x0f030a02 },
230 { 0x0030, 0x00000001 },
231 { 0x00b0, 0x00000000 },
232 { 0x0040, 0x00000009 },
233 { 0x0044, 0x00000007 },
234 { 0x0048, 0x00000000 },
235 { 0x0050, 0x00000009 },
236 { 0x0054, 0x000a0009 },
237 { 0x0058, 0x00000021 },
238 { 0x005c, 0x00000018 },
239 { 0x0060, 0x00000005 },
240 { 0x0064, 0x00000020 },
241 { 0x0068, 0x00000007 },
242 { 0x006c, 0x0000000a },
243 { 0x0070, 0x00000009 },
244 { 0x0074, 0x00000010 },
245 { 0x0078, 0x000000ae },
246 { 0x007c, 0x00140005 },
247 { 0x0080, 0x00050004 },
248 { 0x0084, 0x50213005 },
249 { 0x0088, 0x000c0000 },
250 { 0x008c, 0x00000200 },
251 { 0x0090, 0x00000040 },
252 { 0x0100, 0x00000001 },
253 { 0x00c0, 0x00020001 },
254 { 0x00c8, 0x20042004 },
255 { 0x0380, 0x00020003 },
256 { 0x0390, 0x0000001f },
257 };
258
259 static const struct reg_config dbsc_config5[] = {
260 { 0x0244, 0x00000011 },
261 { 0x0290, 0x00000003 },
262 { 0x02a0, 0x0300c4e1 },
263 { 0x0290, 0x00000023 },
264 { 0x02a0, 0x00fcb6d0 },
265 { 0x0290, 0x00000011 },
266 { 0x02a0, 0x1000040b },
267 { 0x0290, 0x00000012 },
268 { 0x02a0, 0x85589955 },
269 { 0x0290, 0x00000013 },
270 { 0x02a0, 0x1a852400 },
271 { 0x0290, 0x00000014 },
272 { 0x02a0, 0x300210b4 },
273 { 0x0290, 0x00000015 },
274 { 0x02a0, 0x00000b50 },
275 { 0x0290, 0x00000016 },
276 { 0x02a0, 0x00000006 },
277 { 0x0290, 0x00000017 },
278 { 0x02a0, 0x00000010 },
279 { 0x0290, 0x0000001a },
280 { 0x02a0, 0x910035c7 },
281 { 0x0290, 0x00000004 },
282 };
283
284 static const struct reg_config dbsc_config6[] = {
285 { 0x0290, 0x00000001 },
286 { 0x02a0, 0x00000181 },
287 { 0x0018, 0x11000000 },
288 { 0x0290, 0x00000004 },
289 };
290
291 static const struct reg_config dbsc_config7[] = {
292 { 0x0290, 0x00000001 },
293 { 0x02a0, 0x0000fe01 },
294 { 0x0304, 0x00000000 },
295 { 0x00f4, 0x01004c20 },
296 { 0x00f8, 0x012c00be },
297 { 0x00e0, 0x00000140 },
298 { 0x00e4, 0x00081450 },
299 { 0x00e8, 0x00010000 },
300 { 0x0290, 0x00000004 },
301 };
302
303 static const struct reg_config dbsc_config8[] = {
304 { 0x0014, 0x00000001 },
305 { 0x0290, 0x00000010 },
306 { 0x02a0, 0xf00464db },
307 { 0x0010, 0x00000001 },
308 { 0x0280, 0x00000000 },
309 };
310
311 static const u32 dbsc3_0_base = DBSC3_0_BASE;
312 unsigned int i;
313
314 for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++)
315 writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off);
316
317 dbsc_wait(0x2a0);
318
319 for (i = 0; i < ARRAY_SIZE(dbsc_config2); i++)
320 writel(dbsc_config2[i].val, dbsc3_0_base | dbsc_config2[i].off);
321
322 for (i = 0; i < ARRAY_SIZE(dbsc_config3r2); i++) {
323 writel(dbsc_config3r2[i].val,
324 dbsc3_0_base | dbsc_config3r2[i].off);
325 }
326
327 for (i = 0; i < ARRAY_SIZE(dbsc_config4); i++)
328 writel(dbsc_config4[i].val, dbsc3_0_base | dbsc_config4[i].off);
329
330 dbsc_wait(0x240);
331
332 for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++)
333 writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off);
334
335 dbsc_wait(0x2a0);
336
337 for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++)
338 writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off);
339
340 dbsc_wait(0x2a0);
341
342 for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++)
343 writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off);
344
345 dbsc_wait(0x2a0);
346
347 for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++)
348 writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off);
349
350}
351
352static void spl_init_qspi(void)
353{
354 mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917);
355
356 static const u32 qspi_base = 0xe6b10000;
357
358 writeb(0x08, qspi_base + 0x00);
359 writeb(0x00, qspi_base + 0x01);
360 writeb(0x06, qspi_base + 0x02);
361 writeb(0x01, qspi_base + 0x0a);
362 writeb(0x00, qspi_base + 0x0b);
363 writeb(0x00, qspi_base + 0x0c);
364 writeb(0x00, qspi_base + 0x0d);
365 writeb(0x00, qspi_base + 0x0e);
366
367 writew(0xe080, qspi_base + 0x10);
368
369 writeb(0xc0, qspi_base + 0x18);
370 writeb(0x00, qspi_base + 0x18);
371 writeb(0x00, qspi_base + 0x08);
372 writeb(0x48, qspi_base + 0x00);
373}
374
375void board_init_f(ulong dummy)
376{
377 mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
378 mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF2_MSTP719);
379
380 /* Set SD1 to the 97.5MHz */
381 writel(SD_97500KHZ, SD1CKCR);
382
383 spl_init_sys();
384 spl_init_pfc();
385 spl_init_gpio();
386 spl_init_lbsc();
387 spl_init_dbsc();
388 spl_init_qspi();
389}
390
391void spl_board_init(void)
392{
393 /* UART clocks enabled and gd valid - init serial console */
394 preloader_console_init();
395}
396
397void board_boot_order(u32 *spl_boot_list)
398{
399 const u32 jtag_magic = 0x1337c0de;
400 const u32 load_magic = 0xb33fc0de;
401
402 /*
403 * If JTAG probe sets special word at 0xe6300020, then it must
404 * put U-Boot into RAM and SPL will start it from RAM.
405 */
406 if (readl(CONFIG_SPL_TEXT_BASE + 0x20) == jtag_magic) {
407 printf("JTAG boot detected!\n");
408
409 while (readl(CONFIG_SPL_TEXT_BASE + 0x24) != load_magic)
410 ;
411
412 spl_boot_list[0] = BOOT_DEVICE_RAM;
413 spl_boot_list[1] = BOOT_DEVICE_NONE;
414
415 return;
416 }
417
418 /* Boot from SPI NOR with YMODEM UART fallback. */
419 spl_boot_list[0] = BOOT_DEVICE_SPI;
420 spl_boot_list[1] = BOOT_DEVICE_UART;
421 spl_boot_list[2] = BOOT_DEVICE_NONE;
422}
423
35b65dd8 424void reset_cpu(void)
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425{
426}