2
* initcode.c - Initialize the processor. This is usually entails things
3
* like external memory, voltage regulators, etc... Note that this file
4
* cannot make any function calls as it may be executed all by itself by
5
* the Blackfin's bootrom in LDR format.
7
* Copyright (c) 2004-2011 Analog Devices Inc.
9
* Licensed under the GPL-2 or later.
12
#define BFIN_IN_INITCODE
15
#include <asm/blackfin.h>
16
#include <asm/mach-common/bits/watchdog.h>
17
#include <asm/mach-common/bits/bootrom.h>
18
#include <asm/mach-common/bits/core.h>
19
#include <asm/serial.h>
22
#include <asm/mach-common/bits/ebiu.h>
23
#include <asm/mach-common/bits/pll.h>
24
#else /* __ADSPBF60x__ */
25
#include <asm/mach-common/bits/cgu.h>
27
#define CONFIG_BFIN_GET_DCLK_M \
28
((CONFIG_CLKIN_HZ*CONFIG_VCO_MULT)/(CONFIG_DCLK_DIV*1000000))
30
#ifndef CONFIG_DMC_DDRCFG
31
#if ((CONFIG_BFIN_GET_DCLK_M != 125) && \
32
(CONFIG_BFIN_GET_DCLK_M != 133) && \
33
(CONFIG_BFIN_GET_DCLK_M != 150) && \
34
(CONFIG_BFIN_GET_DCLK_M != 166) && \
35
(CONFIG_BFIN_GET_DCLK_M != 200) && \
36
(CONFIG_BFIN_GET_DCLK_M != 225) && \
37
(CONFIG_BFIN_GET_DCLK_M != 250))
38
#error "DDR2 CLK must be in (125, 133, 150, 166, 200, 225, 250)MHz"
42
/* DMC control bits */
47
#define MEMINITDONE 0x4
51
#define DLLCALDONE 0x2000
52
#define PENDREF 0xF0000
53
#define PHYRDPHASE 0xF00000
54
#define PHYRDPHASE_OFFSET 20
56
/* DMC DLL control bits */
57
#define DLLCALRDCNT 0xFF
58
#define DATACYC_OFFSET 8
71
static struct ddr_config ddr_config_table[] = {
73
.ddr_clk = 125, /* 125MHz */
74
.dmc_ddrctl = 0x00000904,
75
.dmc_ddrcfg = 0x00000422,
76
.dmc_ddrtr0 = 0x20705212,
77
.dmc_ddrtr1 = 0x201003CF,
78
.dmc_ddrtr2 = 0x00320107,
79
.dmc_ddrmr = 0x00000422,
83
.ddr_clk = 133, /* 133MHz */
84
.dmc_ddrctl = 0x00000904,
85
.dmc_ddrcfg = 0x00000422,
86
.dmc_ddrtr0 = 0x20806313,
87
.dmc_ddrtr1 = 0x2013040D,
88
.dmc_ddrtr2 = 0x00320108,
89
.dmc_ddrmr = 0x00000632,
93
.ddr_clk = 150, /* 150MHz */
94
.dmc_ddrctl = 0x00000904,
95
.dmc_ddrcfg = 0x00000422,
96
.dmc_ddrtr0 = 0x20A07323,
97
.dmc_ddrtr1 = 0x20160492,
98
.dmc_ddrtr2 = 0x00320209,
99
.dmc_ddrmr = 0x00000632,
103
.ddr_clk = 166, /* 166MHz */
104
.dmc_ddrctl = 0x00000904,
105
.dmc_ddrcfg = 0x00000422,
106
.dmc_ddrtr0 = 0x20A07323,
107
.dmc_ddrtr1 = 0x2016050E,
108
.dmc_ddrtr2 = 0x00320209,
109
.dmc_ddrmr = 0x00000632,
113
.ddr_clk = 200, /* 200MHz */
114
.dmc_ddrctl = 0x00000904,
115
.dmc_ddrcfg = 0x00000422,
116
.dmc_ddrtr0 = 0x20a07323,
117
.dmc_ddrtr1 = 0x2016050f,
118
.dmc_ddrtr2 = 0x00320509,
119
.dmc_ddrmr = 0x00000632,
123
.ddr_clk = 225, /* 225MHz */
124
.dmc_ddrctl = 0x00000904,
125
.dmc_ddrcfg = 0x00000422,
126
.dmc_ddrtr0 = 0x20E0A424,
127
.dmc_ddrtr1 = 0x302006DB,
128
.dmc_ddrtr2 = 0x0032020D,
129
.dmc_ddrmr = 0x00000842,
133
.ddr_clk = 250, /* 250MHz */
134
.dmc_ddrctl = 0x00000904,
135
.dmc_ddrcfg = 0x00000422,
136
.dmc_ddrtr0 = 0x20E0A424,
137
.dmc_ddrtr1 = 0x3020079E,
138
.dmc_ddrtr2 = 0x0032050D,
139
.dmc_ddrmr = 0x00000842,
143
#endif /* __ADSPBF60x__ */
145
__attribute__((always_inline))
146
static inline void serial_init(void)
148
#if defined(__ADSPBF54x__) || defined(__ADSPBF60x__)
149
# ifdef BFIN_BOOT_UART_USE_RTS
150
# define BFIN_UART_USE_RTS 1
152
# define BFIN_UART_USE_RTS 0
154
if (BFIN_UART_USE_RTS && CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
155
uint32_t uart_base = UART_BASE;
158
/* force RTS rather than relying on auto RTS */
159
#if BFIN_UART_HW_VER < 4
160
bfin_write16(&pUART->mcr, bfin_read16(&pUART->mcr) | FCPOL);
162
bfin_write32(&pUART->control, bfin_read32(&pUART->control) |
166
/* Wait for the line to clear up. We cannot rely on UART
167
* registers as none of them reflect the status of the RSR.
168
* Instead, we'll sleep for ~10 bit times at 9600 baud.
169
* We can precalc things here by assuming boot values for
170
* PLL rather than loading registers and calculating.
171
* baud = SCLK / (16 ^ (1 - EDBO) * Divisor)
173
* Divisor = (SCLK / baud) / 16
174
* SCLK = baud * 16 * Divisor
175
* SCLK = (0x14 * CONFIG_CLKIN_HZ) / 5
176
* CCLK = (16 * Divisor * 5) * (9600 / 10)
177
* In reality, this will probably be just about 1 second delay,
178
* so assuming 9600 baud is OK (both as a very low and too high
179
* speed as this will buffer things enough).
181
#define _NUMBITS (10) /* how many bits to delay */
182
#define _LOWBAUD (9600) /* low baud rate */
183
#define _SCLK ((0x14 * CONFIG_CLKIN_HZ) / 5) /* SCLK based on PLL */
184
#define _DIVISOR ((_SCLK / _LOWBAUD) / 16) /* UART DLL/DLH */
185
#define _NUMINS (3) /* how many instructions in loop */
186
#define _CCLK (((16 * _DIVISOR * 5) * (_LOWBAUD / _NUMBITS)) / _NUMINS)
189
asm volatile("" : : : "memory");
193
#if CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS
194
if (BFIN_DEBUG_EARLY_SERIAL) {
195
serial_early_init(UART_BASE);
196
serial_early_set_baud(UART_BASE, CONFIG_BAUDRATE);
201
__attribute__((always_inline))
202
static inline void serial_deinit(void)
204
#if defined(__ADSPBF54x__) || defined(__ADSPBF60x__)
205
uint32_t uart_base = UART_BASE;
207
if (BFIN_UART_USE_RTS && CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
208
/* clear forced RTS rather than relying on auto RTS */
209
#if BFIN_UART_HW_VER < 4
210
bfin_write16(&pUART->mcr, bfin_read16(&pUART->mcr) & ~FCPOL);
212
bfin_write32(&pUART->control, bfin_read32(&pUART->control) &
219
__attribute__((always_inline))
220
static inline void serial_putc(char c)
222
uint32_t uart_base = UART_BASE;
224
if (!BFIN_DEBUG_EARLY_SERIAL)
230
bfin_write(&pUART->thr, c);
232
while (!(_lsr_read(pUART) & TEMT))
236
#include "initcode.h"
238
__attribute__((always_inline)) static inline void
239
program_nmi_handler(void)
243
/* Older bootroms don't create a dummy NMI handler,
244
* so make one ourselves ASAP in case it fires.
246
if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS && !ANOMALY_05000219)
250
"%0 = RETS;" /* Save current RETS */
251
"CALL 1f;" /* Figure out current PC */
252
"RTN;" /* The simple NMI handler */
254
"%1 = RETS;" /* Load addr of NMI handler */
255
"RETS = %0;" /* Restore RETS */
256
"[%2] = %1;" /* Write NMI handler */
257
: "=d"(tmp1), "=d"(tmp2)
262
/* Max SCLK can be 133MHz ... dividing that by (2*4) gives
263
* us a freq of 16MHz for SPI which should generally be
264
* slow enough for the slow reads the bootrom uses.
266
#if !defined(CONFIG_SPI_FLASH_SLOW_READ) && \
267
((defined(__ADSPBF52x__) && __SILICON_REVISION__ >= 2) || \
268
(defined(__ADSPBF54x__) && __SILICON_REVISION__ >= 1))
269
# define BOOTROM_SUPPORTS_SPI_FAST_READ 1
271
# define BOOTROM_SUPPORTS_SPI_FAST_READ 0
273
#ifndef CONFIG_SPI_BAUD_INITBLOCK
274
# define CONFIG_SPI_BAUD_INITBLOCK (BOOTROM_SUPPORTS_SPI_FAST_READ ? 2 : 4)
277
# define bfin_write_SPI_BAUD bfin_write_SPI0_BAUD
282
#ifndef CONFIG_CGU_CTL_VAL
283
# define CONFIG_CGU_CTL_VAL ((CONFIG_VCO_MULT << 8) | CONFIG_CLKIN_HALF)
286
#ifndef CONFIG_CGU_DIV_VAL
287
# define CONFIG_CGU_DIV_VAL \
288
((CONFIG_CCLK_DIV << CSEL_P) | \
289
(CONFIG_SCLK0_DIV << S0SEL_P) | \
290
(CONFIG_SCLK_DIV << SYSSEL_P) | \
291
(CONFIG_SCLK1_DIV << S1SEL_P) | \
292
(CONFIG_DCLK_DIV << DSEL_P) | \
293
(CONFIG_OCLK_DIV << OSEL_P))
296
#else /* __ADSPBF60x__ */
298
/* PLL_DIV defines */
299
#ifndef CONFIG_PLL_DIV_VAL
300
# if (CONFIG_CCLK_DIV == 1)
301
# define CONFIG_CCLK_ACT_DIV CCLK_DIV1
302
# elif (CONFIG_CCLK_DIV == 2)
303
# define CONFIG_CCLK_ACT_DIV CCLK_DIV2
304
# elif (CONFIG_CCLK_DIV == 4)
305
# define CONFIG_CCLK_ACT_DIV CCLK_DIV4
306
# elif (CONFIG_CCLK_DIV == 8)
307
# define CONFIG_CCLK_ACT_DIV CCLK_DIV8
309
# define CONFIG_CCLK_ACT_DIV CONFIG_CCLK_DIV_not_defined_properly
311
# define CONFIG_PLL_DIV_VAL (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV)
314
#ifndef CONFIG_PLL_LOCKCNT_VAL
315
# define CONFIG_PLL_LOCKCNT_VAL 0x0300
318
#ifndef CONFIG_PLL_CTL_VAL
319
# define CONFIG_PLL_CTL_VAL (SPORT_HYST | (CONFIG_VCO_MULT << 9) | CONFIG_CLKIN_HALF)
322
/* Make sure our voltage value is sane so we don't blow up! */
323
#ifndef CONFIG_VR_CTL_VAL
324
# define BFIN_CCLK ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / CONFIG_CCLK_DIV)
325
# if defined(__ADSPBF533__) || defined(__ADSPBF532__) || defined(__ADSPBF531__)
326
# define CCLK_VLEV_120 400000000
327
# define CCLK_VLEV_125 533000000
328
# elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__)
329
# define CCLK_VLEV_120 401000000
330
# define CCLK_VLEV_125 401000000
331
# elif defined(__ADSPBF561__)
332
# define CCLK_VLEV_120 300000000
333
# define CCLK_VLEV_125 501000000
335
# if BFIN_CCLK < CCLK_VLEV_120
336
# define CONFIG_VR_CTL_VLEV VLEV_120
337
# elif BFIN_CCLK < CCLK_VLEV_125
338
# define CONFIG_VR_CTL_VLEV VLEV_125
340
# define CONFIG_VR_CTL_VLEV VLEV_130
342
# if defined(__ADSPBF52x__) /* TBD; use default */
343
# undef CONFIG_VR_CTL_VLEV
344
# define CONFIG_VR_CTL_VLEV VLEV_110
345
# elif defined(__ADSPBF54x__) /* TBD; use default */
346
# undef CONFIG_VR_CTL_VLEV
347
# define CONFIG_VR_CTL_VLEV VLEV_120
348
# elif defined(__ADSPBF538__) || defined(__ADSPBF539__) /* TBD; use default */
349
# undef CONFIG_VR_CTL_VLEV
350
# define CONFIG_VR_CTL_VLEV VLEV_125
353
# ifdef CONFIG_BFIN_MAC
354
# define CONFIG_VR_CTL_CLKBUF CLKBUFOE
356
# define CONFIG_VR_CTL_CLKBUF 0
359
# if defined(__ADSPBF52x__)
360
# define CONFIG_VR_CTL_FREQ FREQ_1000
362
# define CONFIG_VR_CTL_FREQ (GAIN_20 | FREQ_1000)
365
# define CONFIG_VR_CTL_VAL (CONFIG_VR_CTL_CLKBUF | CONFIG_VR_CTL_VLEV | CONFIG_VR_CTL_FREQ)
368
/* some parts do not have an on-chip voltage regulator */
369
#if defined(__ADSPBF51x__)
370
# define CONFIG_HAS_VR 0
371
# undef CONFIG_VR_CTL_VAL
372
# define CONFIG_VR_CTL_VAL 0
374
# define CONFIG_HAS_VR 1
379
/* Blackfin with SDRAM */
380
#ifndef CONFIG_EBIU_SDBCTL_VAL
381
# if CONFIG_MEM_SIZE == 16
382
# define CONFIG_EBSZ_VAL EBSZ_16
383
# elif CONFIG_MEM_SIZE == 32
384
# define CONFIG_EBSZ_VAL EBSZ_32
385
# elif CONFIG_MEM_SIZE == 64
386
# define CONFIG_EBSZ_VAL EBSZ_64
387
# elif CONFIG_MEM_SIZE == 128
388
# define CONFIG_EBSZ_VAL EBSZ_128
389
# elif CONFIG_MEM_SIZE == 256
390
# define CONFIG_EBSZ_VAL EBSZ_256
391
# elif CONFIG_MEM_SIZE == 512
392
# define CONFIG_EBSZ_VAL EBSZ_512
394
# error You need to define CONFIG_EBIU_SDBCTL_VAL or CONFIG_MEM_SIZE
396
# if CONFIG_MEM_ADD_WDTH == 8
397
# define CONFIG_EBCAW_VAL EBCAW_8
398
# elif CONFIG_MEM_ADD_WDTH == 9
399
# define CONFIG_EBCAW_VAL EBCAW_9
400
# elif CONFIG_MEM_ADD_WDTH == 10
401
# define CONFIG_EBCAW_VAL EBCAW_10
402
# elif CONFIG_MEM_ADD_WDTH == 11
403
# define CONFIG_EBCAW_VAL EBCAW_11
405
# error You need to define CONFIG_EBIU_SDBCTL_VAL or CONFIG_MEM_ADD_WDTH
407
# define CONFIG_EBIU_SDBCTL_VAL (CONFIG_EBCAW_VAL | CONFIG_EBSZ_VAL | EBE)
412
/* Conflicting Column Address Widths Causes SDRAM Errors:
413
* EB2CAW and EB3CAW must be the same
416
# if ((CONFIG_EBIU_SDBCTL_VAL & 0x30000000) >> 8) != (CONFIG_EBIU_SDBCTL_VAL & 0x00300000)
417
# error "Anomaly 05000362: EB2CAW and EB3CAW must be the same"
421
#endif /* __ADSPBF60x__ */
423
__attribute__((always_inline)) static inline void
424
program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB)
428
/* Save the clock pieces that are used in baud rate calculation */
429
if (BFIN_DEBUG_EARLY_SERIAL || CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
432
*sdivB = bfin_read_CGU_DIV();
433
*sdivB = ((*sdivB >> 8) & 0x1f) * ((*sdivB >> 5) & 0x7);
434
*vcoB = (bfin_read_CGU_CTL() >> 8) & 0x7f;
436
*sdivB = bfin_read_PLL_DIV() & 0xf;
437
*vcoB = (bfin_read_PLL_CTL() >> 9) & 0x3f;
439
*divB = serial_early_get_div();
445
#ifdef CONFIG_HW_WATCHDOG
446
# ifndef CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE
447
# define CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE 20000
449
/* Program the watchdog with an initial timeout of ~20 seconds.
450
* Hopefully that should be long enough to load the u-boot LDR
451
* (from wherever) and then the common u-boot code can take over.
452
* In bypass mode, the start.S would have already set a much lower
453
* timeout, so don't clobber that.
455
if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS) {
458
/* Reset system event controller */
459
bfin_write_SEC_GCTL(0x2);
460
bfin_write_SEC_CCTL(0x2);
463
/* Enable fault event input and system reset action in fault
464
* controller. Route watchdog timeout event to fault interface.
466
bfin_write_SEC_FCTL(0xc1);
467
/* Enable watchdog interrupt source */
468
bfin_write_SEC_SCTL(2, bfin_read_SEC_SCTL(2) | 0x6);
471
/* Enable system event controller */
472
bfin_write_SEC_GCTL(0x1);
473
bfin_write_SEC_CCTL(0x1);
476
bfin_write_WDOG_CTL(WDDIS);
478
bfin_write_WDOG_CNT(MSEC_TO_SCLK(CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE));
479
#if CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_UART
480
bfin_write_WDOG_CTL(WDEN);
488
/* Blackfin bootroms use the SPI slow read opcode instead of the SPI
489
* fast read, so we need to slow down the SPI clock a lot more during
490
* boot. Once we switch over to u-boot's SPI flash driver, we'll
491
* increase the speed appropriately.
494
if (CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_SPI_MASTER) {
496
if (BOOTROM_SUPPORTS_SPI_FAST_READ && CONFIG_SPI_BAUD_INITBLOCK < 4)
497
bs->dFlags |= BFLAG_FASTREAD;
498
bfin_write_SPI_BAUD(CONFIG_SPI_BAUD_INITBLOCK);
506
__attribute__((always_inline)) static inline bool
507
maybe_self_refresh(ADI_BOOT_DATA *bs)
511
if (!CONFIG_MEM_SIZE)
515
/* resume from hibernate, return false let ddr initialize */
516
if ((bfin_read32(DPM0_STAT) & 0xF0) == 0x50) {
521
#else /* __ADSPBF60x__ */
523
/* If external memory is enabled, put it into self refresh first. */
524
#if defined(EBIU_RSTCTL)
525
if (bfin_read_EBIU_RSTCTL() & DDR_SRESET) {
527
bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() | SRREQ);
530
#elif defined(EBIU_SDGCTL)
531
if (bfin_read_EBIU_SDBCTL() & EBE) {
533
bfin_write_EBIU_SDGCTL(bfin_read_EBIU_SDGCTL() | SRFS);
538
#endif /* __ADSPBF60x__ */
544
__attribute__((always_inline)) static inline u16
545
program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs)
552
if (bfin_read_DMC0_STAT() & MEMINITDONE) {
553
bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() | SRREQ);
555
while (!(bfin_read_DMC0_STAT() & SRACK))
559
/* Don't set the same value of MSEL and DF to CGU_CTL */
560
if ((bfin_read_CGU_CTL() & (MSEL_MASK | DF_MASK))
561
!= CONFIG_CGU_CTL_VAL) {
562
bfin_write_CGU_DIV(CONFIG_CGU_DIV_VAL);
563
bfin_write_CGU_CTL(CONFIG_CGU_CTL_VAL);
564
while ((bfin_read_CGU_STAT() & (CLKSALGN | PLLBP)) ||
565
!(bfin_read_CGU_STAT() & PLLLK))
569
bfin_write_CGU_DIV(CONFIG_CGU_DIV_VAL | UPDT);
570
while (bfin_read_CGU_STAT() & CLKSALGN)
573
if (bfin_read_DMC0_STAT() & MEMINITDONE) {
574
bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() & ~SRREQ);
576
while (bfin_read_DMC0_STAT() & SRACK)
580
#else /* __ADSPBF60x__ */
582
vr_ctl = bfin_read_VR_CTL();
586
/* If we're entering self refresh, make sure it has happened. */
588
#if defined(EBIU_RSTCTL)
589
while (!(bfin_read_EBIU_RSTCTL() & SRACK))
591
#elif defined(EBIU_SDGCTL)
592
while (!(bfin_read_EBIU_SDSTAT() & SDSRA))
600
/* With newer bootroms, we use the helper function to set up
601
* the memory controller. Older bootroms lacks such helpers
602
* so we do it ourselves.
604
if (!ANOMALY_05000386) {
607
/* Always programming PLL_LOCKCNT avoids Anomaly 05000430 */
608
ADI_SYSCTRL_VALUES memory_settings;
609
uint32_t actions = SYSCTRL_WRITE | SYSCTRL_PLLCTL | SYSCTRL_LOCKCNT;
610
if (!ANOMALY_05000440)
611
actions |= SYSCTRL_PLLDIV;
613
actions |= SYSCTRL_VRCTL;
614
if (CONFIG_VR_CTL_VAL & FREQ_MASK)
615
actions |= SYSCTRL_INTVOLTAGE;
617
actions |= SYSCTRL_EXTVOLTAGE;
618
memory_settings.uwVrCtl = CONFIG_VR_CTL_VAL;
620
actions |= SYSCTRL_EXTVOLTAGE;
621
memory_settings.uwPllCtl = CONFIG_PLL_CTL_VAL;
622
memory_settings.uwPllDiv = CONFIG_PLL_DIV_VAL;
623
memory_settings.uwPllLockCnt = CONFIG_PLL_LOCKCNT_VAL;
625
bfin_write_SIC_IWR1(0);
628
bfrom_SysControl(actions, &memory_settings, NULL);
630
if (ANOMALY_05000440)
631
bfin_write_PLL_DIV(CONFIG_PLL_DIV_VAL);
633
bfin_write_SIC_IWR1(-1);
636
bfin_write_SICA_IWR0(-1);
637
bfin_write_SICA_IWR1(-1);
643
/* Disable all peripheral wakeups except for the PLL event. */
645
bfin_write_SIC_IWR0(1);
646
bfin_write_SIC_IWR1(0);
648
bfin_write_SIC_IWR2(0);
650
#elif defined(SICA_IWR0)
651
bfin_write_SICA_IWR0(1);
652
bfin_write_SICA_IWR1(0);
653
#elif defined(SIC_IWR)
654
bfin_write_SIC_IWR(1);
659
/* Always programming PLL_LOCKCNT avoids Anomaly 05000430 */
660
bfin_write_PLL_LOCKCNT(CONFIG_PLL_LOCKCNT_VAL);
664
/* Only reprogram when needed to avoid triggering unnecessary
665
* PLL relock sequences.
667
if (vr_ctl != CONFIG_VR_CTL_VAL) {
669
bfin_write_VR_CTL(CONFIG_VR_CTL_VAL);
676
bfin_write_PLL_DIV(CONFIG_PLL_DIV_VAL);
680
/* Only reprogram when needed to avoid triggering unnecessary
681
* PLL relock sequences.
683
if (ANOMALY_05000242 || bfin_read_PLL_CTL() != CONFIG_PLL_CTL_VAL) {
685
bfin_write_PLL_CTL(CONFIG_PLL_CTL_VAL);
692
/* Restore all peripheral wakeups. */
694
bfin_write_SIC_IWR0(-1);
695
bfin_write_SIC_IWR1(-1);
697
bfin_write_SIC_IWR2(-1);
699
#elif defined(SICA_IWR0)
700
bfin_write_SICA_IWR0(-1);
701
bfin_write_SICA_IWR1(-1);
702
#elif defined(SIC_IWR)
703
bfin_write_SIC_IWR(-1);
709
#endif /* __ADSPBF60x__ */
716
__attribute__((always_inline)) static inline void
717
update_serial_clocks(ADI_BOOT_DATA *bs, uint sdivB, uint divB, uint vcoB)
719
/* Since we've changed the SCLK above, we may need to update
720
* the UART divisors (UART baud rates are based on SCLK).
721
* Do the division by hand as there are no native instructions
722
* for dividing which means we'd generate a libgcc reference.
724
unsigned int sdivR, vcoR;
725
unsigned int dividend;
726
unsigned int divisor;
727
unsigned int quotient;
731
if (BFIN_DEBUG_EARLY_SERIAL ||
732
CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
734
sdivR = bfin_read_CGU_DIV();
735
sdivR = ((sdivR >> 8) & 0x1f) * ((sdivR >> 5) & 0x7);
736
vcoR = (bfin_read_CGU_CTL() >> 8) & 0x7f;
738
sdivR = bfin_read_PLL_DIV() & 0xf;
739
vcoR = (bfin_read_PLL_CTL() >> 9) & 0x3f;
742
dividend = sdivB * divB * vcoR;
743
divisor = vcoB * sdivR;
744
quotient = early_division(dividend, divisor);
745
serial_early_put_div(quotient - ANOMALY_05000230);
751
__attribute__((always_inline)) static inline void
752
program_memory_controller(ADI_BOOT_DATA *bs, bool put_into_srfs)
756
if (!CONFIG_MEM_SIZE)
766
if (CONFIG_BFIN_GET_DCLK_M == 125)
768
else if (CONFIG_BFIN_GET_DCLK_M == 133)
770
else if (CONFIG_BFIN_GET_DCLK_M == 150)
772
else if (CONFIG_BFIN_GET_DCLK_M == 166)
774
else if (CONFIG_BFIN_GET_DCLK_M == 200)
776
else if (CONFIG_BFIN_GET_DCLK_M == 225)
778
else if (CONFIG_BFIN_GET_DCLK_M == 250)
782
for (i = 0; i < ARRAY_SIZE(ddr_config_table); i++)
783
if (CONFIG_BFIN_GET_DCLK_M == ddr_config_table[i].ddr_clk)
787
#ifndef CONFIG_DMC_DDRCFG
788
bfin_write_DMC0_CFG(ddr_config_table[i].dmc_ddrcfg);
790
bfin_write_DMC0_CFG(CONFIG_DMC_DDRCFG);
792
#ifndef CONFIG_DMC_DDRTR0
793
bfin_write_DMC0_TR0(ddr_config_table[i].dmc_ddrtr0);
795
bfin_write_DMC0_TR0(CONFIG_DMC_DDRTR0);
797
#ifndef CONFIG_DMC_DDRTR1
798
bfin_write_DMC0_TR1(ddr_config_table[i].dmc_ddrtr1);
800
bfin_write_DMC0_TR1(CONFIG_DMC_DDRTR1);
802
#ifndef CONFIG_DMC_DDRTR2
803
bfin_write_DMC0_TR2(ddr_config_table[i].dmc_ddrtr2);
805
bfin_write_DMC0_TR2(CONFIG_DMC_DDRTR2);
807
#ifndef CONFIG_DMC_DDRMR
808
bfin_write_DMC0_MR(ddr_config_table[i].dmc_ddrmr);
810
bfin_write_DMC0_MR(CONFIG_DMC_DDRMR);
812
#ifndef CONFIG_DMC_DDREMR1
813
bfin_write_DMC0_EMR1(ddr_config_table[i].dmc_ddrmr1);
815
bfin_write_DMC0_EMR1(CONFIG_DMC_DDREMR1);
817
#ifndef CONFIG_DMC_DDRCTL
818
bfin_write_DMC0_CTL(ddr_config_table[i].dmc_ddrctl);
820
bfin_write_DMC0_CTL(CONFIG_DMC_DDRCTL);
824
while (!(bfin_read_DMC0_STAT() & MEMINITDONE))
827
dlldatacycle = (bfin_read_DMC0_STAT() & PHYRDPHASE) >>
829
dll_ctl = bfin_read_DMC0_DLLCTL();
831
bfin_write_DMC0_DLLCTL(dll_ctl | (dlldatacycle << DATACYC_OFFSET));
834
while (!(bfin_read_DMC0_STAT() & DLLCALDONE))
838
#else /* __ADSPBF60x__ */
840
/* Program the external memory controller before we come out of
841
* self-refresh. This only works with our SDRAM controller.
844
# ifdef CONFIG_EBIU_SDRRC_VAL
845
bfin_write_EBIU_SDRRC(CONFIG_EBIU_SDRRC_VAL);
847
# ifdef CONFIG_EBIU_SDBCTL_VAL
848
bfin_write_EBIU_SDBCTL(CONFIG_EBIU_SDBCTL_VAL);
850
# ifdef CONFIG_EBIU_SDGCTL_VAL
851
bfin_write_EBIU_SDGCTL(CONFIG_EBIU_SDGCTL_VAL);
857
/* Now that we've reprogrammed, take things out of self refresh. */
859
#if defined(EBIU_RSTCTL)
860
bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() & ~(SRREQ));
861
#elif defined(EBIU_SDGCTL)
862
bfin_write_EBIU_SDGCTL(bfin_read_EBIU_SDGCTL() & ~(SRFS));
867
/* Our DDR controller sucks and cannot be programmed while in
868
* self-refresh. So we have to pull it out before programming.
871
# ifdef CONFIG_EBIU_RSTCTL_VAL
872
bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() | 0x1 /*DDRSRESET*/ | CONFIG_EBIU_RSTCTL_VAL);
874
# ifdef CONFIG_EBIU_DDRCTL0_VAL
875
bfin_write_EBIU_DDRCTL0(CONFIG_EBIU_DDRCTL0_VAL);
877
# ifdef CONFIG_EBIU_DDRCTL1_VAL
878
bfin_write_EBIU_DDRCTL1(CONFIG_EBIU_DDRCTL1_VAL);
880
# ifdef CONFIG_EBIU_DDRCTL2_VAL
881
bfin_write_EBIU_DDRCTL2(CONFIG_EBIU_DDRCTL2_VAL);
883
# ifdef CONFIG_EBIU_DDRCTL3_VAL
884
/* default is disable, so don't need to force this */
885
bfin_write_EBIU_DDRCTL3(CONFIG_EBIU_DDRCTL3_VAL);
887
# ifdef CONFIG_EBIU_DDRQUE_VAL
888
bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE() | CONFIG_EBIU_DDRQUE_VAL);
892
#endif /* __ADSPBF60x__ */
896
__attribute__((always_inline)) static inline void
897
check_hibernation(ADI_BOOT_DATA *bs, u16 vr_ctl, bool put_into_srfs)
901
if (!CONFIG_MEM_SIZE)
906
if (bfin_read32(DPM0_RESTORE0) != 0) {
907
uint32_t reg = bfin_read_DMC0_CTL();
909
bfin_write_DMC0_CTL(reg);
911
while ((bfin_read_DMC0_STAT() & 0x8))
913
while (!(bfin_read_DMC0_STAT() & 0x1))
917
uint32_t *hibernate_magic =
918
(uint32_t *)bfin_read32(DPM0_RESTORE4);
919
SSYNC(); /* make sure memory controller is done */
920
if (hibernate_magic[0] == 0xDEADBEEF) {
923
bfin_write_EVT15(hibernate_magic[1]);
924
bfin_write_IMASK(EVT_IVG15);
925
__asm__ __volatile__ (
926
/* load reti early to avoid anomaly 281 */
928
/* clear hibernate magic */
930
/* load stack pointer */
932
/* lower ourselves from reset ivg to ivg15 */
937
: "p"(hibernate_magic),
938
"d"(0x2000 /* jump.s 0 */),
946
/* Are we coming out of hibernate (suspend to memory) ?
947
* The memory layout is:
948
* 0x0: hibernate magic for anomaly 307 (0xDEADBEEF)
949
* 0x4: return address
952
* SCKELOW is unreliable on older parts (anomaly 307)
954
if (ANOMALY_05000307 || vr_ctl & 0x8000) {
955
uint32_t *hibernate_magic = 0;
958
if (hibernate_magic[0] == 0xDEADBEEF) {
960
bfin_write_EVT15(hibernate_magic[1]);
961
bfin_write_IMASK(EVT_IVG15);
962
__asm__ __volatile__ (
963
/* load reti early to avoid anomaly 281 */
965
/* clear hibernate magic */
967
/* load stack pointer */
969
/* lower ourselves from reset ivg to ivg15 */
973
: "p"(hibernate_magic), "d"(0x2000 /* jump.s 0 */)
983
BOOTROM_CALLED_FUNC_ATTR
984
void initcode(ADI_BOOT_DATA *bs)
986
ADI_BOOT_DATA bootstruct_scratch;
988
/* Setup NMI handler before anything else */
989
program_nmi_handler();
995
/* If the bootstruct is NULL, then it's because we're loading
996
* dynamically and not via LDR (bootrom). So set the struct to
997
* some scratch space.
1000
bs = &bootstruct_scratch;
1003
bool put_into_srfs = maybe_self_refresh(bs);
1006
uint sdivB, divB, vcoB;
1007
program_early_devices(bs, &sdivB, &divB, &vcoB);
1010
u16 vr_ctl = program_clocks(bs, put_into_srfs);
1013
update_serial_clocks(bs, sdivB, divB, vcoB);
1016
program_memory_controller(bs, put_into_srfs);
1019
check_hibernation(bs, vr_ctl, put_into_srfs);
1022
program_async_controller(bs);
1024
#ifdef CONFIG_BFIN_BOOTROM_USES_EVT1
1026
/* Tell the bootrom where our entry point is so that it knows
1027
* where to jump to when finishing processing the LDR. This
1028
* allows us to avoid small jump blocks in the LDR, and also
1029
* works around anomaly 05000389 (init address in external
1030
* memory causes bootrom to trigger external addressing IVHW).
1032
if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS)
1033
bfin_write_EVT1(CONFIG_SYS_MONITOR_BASE);