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/bootrom.h>
17 #include <asm/mach-common/bits/core.h>
19 #define BUG() while (1) { asm volatile("emuexcpt;"); }
24 #include <asm/mach-common/bits/ebiu.h>
25 #include <asm/mach-common/bits/pll.h>
26 #else /* __ADSPBF60x__ */
27 #include <asm/mach-common/bits/cgu.h>
29 #define CONFIG_BFIN_GET_DCLK_M \
30 ((CONFIG_CLKIN_HZ*CONFIG_VCO_MULT)/(CONFIG_DCLK_DIV*1000000))
32 #ifndef CONFIG_DMC_DDRCFG
33 #if ((CONFIG_BFIN_GET_DCLK_M != 125) && \
34 (CONFIG_BFIN_GET_DCLK_M != 133) && \
35 (CONFIG_BFIN_GET_DCLK_M != 150) && \
36 (CONFIG_BFIN_GET_DCLK_M != 166) && \
37 (CONFIG_BFIN_GET_DCLK_M != 200) && \
38 (CONFIG_BFIN_GET_DCLK_M != 225) && \
39 (CONFIG_BFIN_GET_DCLK_M != 250))
40 #error "DDR2 CLK must be in (125, 133, 150, 166, 200, 225, 250)MHz"
44 /* DMC control bits */
49 #define MEMINITDONE 0x4
53 #define DLLCALDONE 0x2000
54 #define PENDREF 0xF0000
55 #define PHYRDPHASE 0xF00000
56 #define PHYRDPHASE_OFFSET 20
58 /* DMC DLL control bits */
59 #define DLLCALRDCNT 0xFF
60 #define DATACYC_OFFSET 8
73 static struct ddr_config ddr_config_table[] = {
75 .ddr_clk = 125, /* 125MHz */
76 .dmc_ddrctl = 0x00000904,
77 .dmc_ddrcfg = 0x00000422,
78 .dmc_ddrtr0 = 0x20705212,
79 .dmc_ddrtr1 = 0x201003CF,
80 .dmc_ddrtr2 = 0x00320107,
81 .dmc_ddrmr = 0x00000422,
85 .ddr_clk = 133, /* 133MHz */
86 .dmc_ddrctl = 0x00000904,
87 .dmc_ddrcfg = 0x00000422,
88 .dmc_ddrtr0 = 0x20806313,
89 .dmc_ddrtr1 = 0x2013040D,
90 .dmc_ddrtr2 = 0x00320108,
91 .dmc_ddrmr = 0x00000632,
95 .ddr_clk = 150, /* 150MHz */
96 .dmc_ddrctl = 0x00000904,
97 .dmc_ddrcfg = 0x00000422,
98 .dmc_ddrtr0 = 0x20A07323,
99 .dmc_ddrtr1 = 0x20160492,
100 .dmc_ddrtr2 = 0x00320209,
101 .dmc_ddrmr = 0x00000632,
105 .ddr_clk = 166, /* 166MHz */
106 .dmc_ddrctl = 0x00000904,
107 .dmc_ddrcfg = 0x00000422,
108 .dmc_ddrtr0 = 0x20A07323,
109 .dmc_ddrtr1 = 0x2016050E,
110 .dmc_ddrtr2 = 0x00320209,
111 .dmc_ddrmr = 0x00000632,
115 .ddr_clk = 200, /* 200MHz */
116 .dmc_ddrctl = 0x00000904,
117 .dmc_ddrcfg = 0x00000422,
118 .dmc_ddrtr0 = 0x20a07323,
119 .dmc_ddrtr1 = 0x2016050f,
120 .dmc_ddrtr2 = 0x00320509,
121 .dmc_ddrmr = 0x00000632,
125 .ddr_clk = 225, /* 225MHz */
126 .dmc_ddrctl = 0x00000904,
127 .dmc_ddrcfg = 0x00000422,
128 .dmc_ddrtr0 = 0x20E0A424,
129 .dmc_ddrtr1 = 0x302006DB,
130 .dmc_ddrtr2 = 0x0032020D,
131 .dmc_ddrmr = 0x00000842,
135 .ddr_clk = 250, /* 250MHz */
136 .dmc_ddrctl = 0x00000904,
137 .dmc_ddrcfg = 0x00000422,
138 .dmc_ddrtr0 = 0x20E0A424,
139 .dmc_ddrtr1 = 0x3020079E,
140 .dmc_ddrtr2 = 0x0032050D,
141 .dmc_ddrmr = 0x00000842,
145 #endif /* __ADSPBF60x__ */
147 __attribute__((always_inline))
148 static inline void serial_init(void)
150 uint32_t uart_base = UART_BASE;
152 #if defined(__ADSPBF54x__) || defined(__ADSPBF60x__)
153 # ifdef BFIN_BOOT_UART_USE_RTS
154 # define BFIN_UART_USE_RTS 1
156 # define BFIN_UART_USE_RTS 0
158 if (BFIN_UART_USE_RTS && CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
161 /* force RTS rather than relying on auto RTS */
162 #if BFIN_UART_HW_VER < 4
163 bfin_write16(&pUART->mcr, bfin_read16(&pUART->mcr) | FCPOL);
165 bfin_write32(&pUART->control, bfin_read32(&pUART->control) |
169 /* Wait for the line to clear up. We cannot rely on UART
170 * registers as none of them reflect the status of the RSR.
171 * Instead, we'll sleep for ~10 bit times at 9600 baud.
172 * We can precalc things here by assuming boot values for
173 * PLL rather than loading registers and calculating.
174 * baud = SCLK / (16 ^ (1 - EDBO) * Divisor)
176 * Divisor = (SCLK / baud) / 16
177 * SCLK = baud * 16 * Divisor
178 * SCLK = (0x14 * CONFIG_CLKIN_HZ) / 5
179 * CCLK = (16 * Divisor * 5) * (9600 / 10)
180 * In reality, this will probably be just about 1 second delay,
181 * so assuming 9600 baud is OK (both as a very low and too high
182 * speed as this will buffer things enough).
184 #define _NUMBITS (10) /* how many bits to delay */
185 #define _LOWBAUD (9600) /* low baud rate */
186 #define _SCLK ((0x14 * CONFIG_CLKIN_HZ) / 5) /* SCLK based on PLL */
187 #define _DIVISOR ((_SCLK / _LOWBAUD) / 16) /* UART DLL/DLH */
188 #define _NUMINS (3) /* how many instructions in loop */
189 #define _CCLK (((16 * _DIVISOR * 5) * (_LOWBAUD / _NUMBITS)) / _NUMINS)
192 asm volatile("" : : : "memory");
196 if (BFIN_DEBUG_EARLY_SERIAL) {
197 int enabled = serial_early_enabled(uart_base);
199 serial_early_init(uart_base);
201 /* If the UART is off, that means we need to program
202 * the baud rate ourselves initially.
205 serial_early_set_baud(uart_base, CONFIG_BAUDRATE);
209 __attribute__((always_inline))
210 static inline void serial_deinit(void)
212 #if defined(__ADSPBF54x__) || defined(__ADSPBF60x__)
213 uint32_t uart_base = UART_BASE;
215 if (BFIN_UART_USE_RTS && CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
216 /* clear forced RTS rather than relying on auto RTS */
217 #if BFIN_UART_HW_VER < 4
218 bfin_write16(&pUART->mcr, bfin_read16(&pUART->mcr) & ~FCPOL);
220 bfin_write32(&pUART->control, bfin_read32(&pUART->control) &
227 __attribute__((always_inline))
228 static inline void serial_putc(char c)
230 uint32_t uart_base = UART_BASE;
232 if (!BFIN_DEBUG_EARLY_SERIAL)
238 bfin_write(&pUART->thr, c);
240 while (!(_lsr_read(pUART) & TEMT))
244 #include "initcode.h"
246 __attribute__((always_inline)) static inline void
247 program_nmi_handler(void)
251 /* Older bootroms don't create a dummy NMI handler,
252 * so make one ourselves ASAP in case it fires.
254 if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS && !ANOMALY_05000219)
258 "%0 = RETS;" /* Save current RETS */
259 "CALL 1f;" /* Figure out current PC */
260 "RTN;" /* The simple NMI handler */
262 "%1 = RETS;" /* Load addr of NMI handler */
263 "RETS = %0;" /* Restore RETS */
264 "[%2] = %1;" /* Write NMI handler */
265 : "=d"(tmp1), "=d"(tmp2)
270 /* Max SCLK can be 133MHz ... dividing that by (2*4) gives
271 * us a freq of 16MHz for SPI which should generally be
272 * slow enough for the slow reads the bootrom uses.
274 #if !defined(CONFIG_SPI_FLASH_SLOW_READ) && \
275 ((defined(__ADSPBF52x__) && __SILICON_REVISION__ >= 2) || \
276 (defined(__ADSPBF54x__) && __SILICON_REVISION__ >= 1))
277 # define BOOTROM_SUPPORTS_SPI_FAST_READ 1
279 # define BOOTROM_SUPPORTS_SPI_FAST_READ 0
281 #ifndef CONFIG_SPI_BAUD_INITBLOCK
282 # define CONFIG_SPI_BAUD_INITBLOCK (BOOTROM_SUPPORTS_SPI_FAST_READ ? 2 : 4)
285 # define bfin_write_SPI_BAUD bfin_write_SPI0_BAUD
290 #ifndef CONFIG_CGU_CTL_VAL
291 # define CONFIG_CGU_CTL_VAL ((CONFIG_VCO_MULT << 8) | CONFIG_CLKIN_HALF)
294 #ifndef CONFIG_CGU_DIV_VAL
295 # define CONFIG_CGU_DIV_VAL \
296 ((CONFIG_CCLK_DIV << CSEL_P) | \
297 (CONFIG_SCLK0_DIV << S0SEL_P) | \
298 (CONFIG_SCLK_DIV << SYSSEL_P) | \
299 (CONFIG_SCLK1_DIV << S1SEL_P) | \
300 (CONFIG_DCLK_DIV << DSEL_P) | \
301 (CONFIG_OCLK_DIV << OSEL_P))
304 #else /* __ADSPBF60x__ */
306 /* PLL_DIV defines */
307 #ifndef CONFIG_PLL_DIV_VAL
308 # if (CONFIG_CCLK_DIV == 1)
309 # define CONFIG_CCLK_ACT_DIV CCLK_DIV1
310 # elif (CONFIG_CCLK_DIV == 2)
311 # define CONFIG_CCLK_ACT_DIV CCLK_DIV2
312 # elif (CONFIG_CCLK_DIV == 4)
313 # define CONFIG_CCLK_ACT_DIV CCLK_DIV4
314 # elif (CONFIG_CCLK_DIV == 8)
315 # define CONFIG_CCLK_ACT_DIV CCLK_DIV8
317 # define CONFIG_CCLK_ACT_DIV CONFIG_CCLK_DIV_not_defined_properly
319 # define CONFIG_PLL_DIV_VAL (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV)
322 #ifndef CONFIG_PLL_LOCKCNT_VAL
323 # define CONFIG_PLL_LOCKCNT_VAL 0x0300
326 #ifndef CONFIG_PLL_CTL_VAL
327 # define CONFIG_PLL_CTL_VAL (SPORT_HYST | (CONFIG_VCO_MULT << 9) | CONFIG_CLKIN_HALF)
330 /* Make sure our voltage value is sane so we don't blow up! */
331 #ifndef CONFIG_VR_CTL_VAL
332 # define BFIN_CCLK ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / CONFIG_CCLK_DIV)
333 # if defined(__ADSPBF533__) || defined(__ADSPBF532__) || defined(__ADSPBF531__)
334 # define CCLK_VLEV_120 400000000
335 # define CCLK_VLEV_125 533000000
336 # elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__)
337 # define CCLK_VLEV_120 401000000
338 # define CCLK_VLEV_125 401000000
339 # elif defined(__ADSPBF561__)
340 # define CCLK_VLEV_120 300000000
341 # define CCLK_VLEV_125 501000000
343 # if BFIN_CCLK < CCLK_VLEV_120
344 # define CONFIG_VR_CTL_VLEV VLEV_120
345 # elif BFIN_CCLK < CCLK_VLEV_125
346 # define CONFIG_VR_CTL_VLEV VLEV_125
348 # define CONFIG_VR_CTL_VLEV VLEV_130
350 # if defined(__ADSPBF52x__) /* TBD; use default */
351 # undef CONFIG_VR_CTL_VLEV
352 # define CONFIG_VR_CTL_VLEV VLEV_110
353 # elif defined(__ADSPBF54x__) /* TBD; use default */
354 # undef CONFIG_VR_CTL_VLEV
355 # define CONFIG_VR_CTL_VLEV VLEV_120
356 # elif defined(__ADSPBF538__) || defined(__ADSPBF539__) /* TBD; use default */
357 # undef CONFIG_VR_CTL_VLEV
358 # define CONFIG_VR_CTL_VLEV VLEV_125
361 # ifdef CONFIG_BFIN_MAC
362 # define CONFIG_VR_CTL_CLKBUF CLKBUFOE
364 # define CONFIG_VR_CTL_CLKBUF 0
367 # if defined(__ADSPBF52x__)
368 # define CONFIG_VR_CTL_FREQ FREQ_1000
370 # define CONFIG_VR_CTL_FREQ (GAIN_20 | FREQ_1000)
373 # define CONFIG_VR_CTL_VAL (CONFIG_VR_CTL_CLKBUF | CONFIG_VR_CTL_VLEV | CONFIG_VR_CTL_FREQ)
376 /* some parts do not have an on-chip voltage regulator */
377 #if defined(__ADSPBF51x__)
378 # define CONFIG_HAS_VR 0
379 # undef CONFIG_VR_CTL_VAL
380 # define CONFIG_VR_CTL_VAL 0
382 # define CONFIG_HAS_VR 1
387 /* Blackfin with SDRAM */
388 #ifndef CONFIG_EBIU_SDBCTL_VAL
389 # if CONFIG_MEM_SIZE == 16
390 # define CONFIG_EBSZ_VAL EBSZ_16
391 # elif CONFIG_MEM_SIZE == 32
392 # define CONFIG_EBSZ_VAL EBSZ_32
393 # elif CONFIG_MEM_SIZE == 64
394 # define CONFIG_EBSZ_VAL EBSZ_64
395 # elif CONFIG_MEM_SIZE == 128
396 # define CONFIG_EBSZ_VAL EBSZ_128
397 # elif CONFIG_MEM_SIZE == 256
398 # define CONFIG_EBSZ_VAL EBSZ_256
399 # elif CONFIG_MEM_SIZE == 512
400 # define CONFIG_EBSZ_VAL EBSZ_512
402 # error You need to define CONFIG_EBIU_SDBCTL_VAL or CONFIG_MEM_SIZE
404 # if CONFIG_MEM_ADD_WDTH == 8
405 # define CONFIG_EBCAW_VAL EBCAW_8
406 # elif CONFIG_MEM_ADD_WDTH == 9
407 # define CONFIG_EBCAW_VAL EBCAW_9
408 # elif CONFIG_MEM_ADD_WDTH == 10
409 # define CONFIG_EBCAW_VAL EBCAW_10
410 # elif CONFIG_MEM_ADD_WDTH == 11
411 # define CONFIG_EBCAW_VAL EBCAW_11
413 # error You need to define CONFIG_EBIU_SDBCTL_VAL or CONFIG_MEM_ADD_WDTH
415 # define CONFIG_EBIU_SDBCTL_VAL (CONFIG_EBCAW_VAL | CONFIG_EBSZ_VAL | EBE)
420 /* Conflicting Column Address Widths Causes SDRAM Errors:
421 * EB2CAW and EB3CAW must be the same
424 # if ((CONFIG_EBIU_SDBCTL_VAL & 0x30000000) >> 8) != (CONFIG_EBIU_SDBCTL_VAL & 0x00300000)
425 # error "Anomaly 05000362: EB2CAW and EB3CAW must be the same"
429 #endif /* __ADSPBF60x__ */
431 __attribute__((always_inline)) static inline void
432 program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB)
436 /* Save the clock pieces that are used in baud rate calculation */
437 if (BFIN_DEBUG_EARLY_SERIAL || CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
440 *sdivB = bfin_read_CGU_DIV();
441 *sdivB = ((*sdivB >> 8) & 0x1f) * ((*sdivB >> 5) & 0x7);
442 *vcoB = (bfin_read_CGU_CTL() >> 8) & 0x7f;
444 *sdivB = bfin_read_PLL_DIV() & 0xf;
445 *vcoB = (bfin_read_PLL_CTL() >> 9) & 0x3f;
447 *divB = serial_early_get_div();
453 #ifdef CONFIG_HW_WATCHDOG
454 # ifndef CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE
455 # define CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE 20000
457 /* Program the watchdog with an initial timeout of ~20 seconds.
458 * Hopefully that should be long enough to load the u-boot LDR
459 * (from wherever) and then the common u-boot code can take over.
460 * In bypass mode, the start.S would have already set a much lower
461 * timeout, so don't clobber that.
463 if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS) {
466 bfin_write_SEC_GCTL(0x2);
468 bfin_write_SEC_FCTL(0xc1);
469 bfin_write_SEC_SCTL(2, bfin_read_SEC_SCTL(2) | 0x6);
471 bfin_write_SEC_CCTL(0x2);
473 bfin_write_SEC_GCTL(0x1);
474 bfin_write_SEC_CCTL(0x1);
476 bfin_write_WDOG_CNT(MSEC_TO_SCLK(CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE));
477 #if CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_UART
478 bfin_write_WDOG_CTL(0);
486 /* Blackfin bootroms use the SPI slow read opcode instead of the SPI
487 * fast read, so we need to slow down the SPI clock a lot more during
488 * boot. Once we switch over to u-boot's SPI flash driver, we'll
489 * increase the speed appropriately.
492 if (CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_SPI_MASTER) {
494 if (BOOTROM_SUPPORTS_SPI_FAST_READ && CONFIG_SPI_BAUD_INITBLOCK < 4)
495 bs->dFlags |= BFLAG_FASTREAD;
496 bfin_write_SPI_BAUD(CONFIG_SPI_BAUD_INITBLOCK);
504 __attribute__((always_inline)) static inline bool
505 maybe_self_refresh(ADI_BOOT_DATA *bs)
509 if (!CONFIG_MEM_SIZE)
513 /* resume from hibernate, return false let ddr initialize */
514 if ((bfin_read32(DPM0_STAT) & 0xF0) == 0x50) {
519 #else /* __ADSPBF60x__ */
521 /* If external memory is enabled, put it into self refresh first. */
522 #if defined(EBIU_RSTCTL)
523 if (bfin_read_EBIU_RSTCTL() & DDR_SRESET) {
525 bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() | SRREQ);
528 #elif defined(EBIU_SDGCTL)
529 if (bfin_read_EBIU_SDBCTL() & EBE) {
531 bfin_write_EBIU_SDGCTL(bfin_read_EBIU_SDGCTL() | SRFS);
536 #endif /* __ADSPBF60x__ */
542 __attribute__((always_inline)) static inline u16
543 program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs)
550 if (bfin_read_DMC0_STAT() & MEMINITDONE) {
551 bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() | SRREQ);
553 while (!(bfin_read_DMC0_STAT() & SRACK))
557 /* Don't set the same value of MSEL and DF to CGU_CTL */
558 if ((bfin_read_CGU_CTL() & (MSEL_MASK | DF_MASK))
559 != CONFIG_CGU_CTL_VAL) {
560 bfin_write_CGU_DIV(CONFIG_CGU_DIV_VAL);
561 bfin_write_CGU_CTL(CONFIG_CGU_CTL_VAL);
562 while ((bfin_read_CGU_STAT() & (CLKSALGN | PLLBP)) ||
563 !(bfin_read_CGU_STAT() & PLLLK))
567 bfin_write_CGU_DIV(CONFIG_CGU_DIV_VAL | UPDT);
568 while (bfin_read_CGU_STAT() & CLKSALGN)
571 if (bfin_read_DMC0_STAT() & MEMINITDONE) {
572 bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() & ~SRREQ);
574 while (bfin_read_DMC0_STAT() & SRACK)
578 #else /* __ADSPBF60x__ */
580 vr_ctl = bfin_read_VR_CTL();
584 /* If we're entering self refresh, make sure it has happened. */
586 #if defined(EBIU_RSTCTL)
587 while (!(bfin_read_EBIU_RSTCTL() & SRACK))
589 #elif defined(EBIU_SDGCTL)
590 while (!(bfin_read_EBIU_SDSTAT() & SDSRA))
598 /* With newer bootroms, we use the helper function to set up
599 * the memory controller. Older bootroms lacks such helpers
600 * so we do it ourselves.
602 if (!ANOMALY_05000386) {
605 /* Always programming PLL_LOCKCNT avoids Anomaly 05000430 */
606 ADI_SYSCTRL_VALUES memory_settings;
607 uint32_t actions = SYSCTRL_WRITE | SYSCTRL_PLLCTL | SYSCTRL_LOCKCNT;
608 if (!ANOMALY_05000440)
609 actions |= SYSCTRL_PLLDIV;
611 actions |= SYSCTRL_VRCTL;
612 if (CONFIG_VR_CTL_VAL & FREQ_MASK)
613 actions |= SYSCTRL_INTVOLTAGE;
615 actions |= SYSCTRL_EXTVOLTAGE;
616 memory_settings.uwVrCtl = CONFIG_VR_CTL_VAL;
618 actions |= SYSCTRL_EXTVOLTAGE;
619 memory_settings.uwPllCtl = CONFIG_PLL_CTL_VAL;
620 memory_settings.uwPllDiv = CONFIG_PLL_DIV_VAL;
621 memory_settings.uwPllLockCnt = CONFIG_PLL_LOCKCNT_VAL;
623 bfin_write_SIC_IWR1(0);
626 bfrom_SysControl(actions, &memory_settings, NULL);
628 if (ANOMALY_05000440)
629 bfin_write_PLL_DIV(CONFIG_PLL_DIV_VAL);
631 bfin_write_SIC_IWR1(-1);
634 bfin_write_SICA_IWR0(-1);
635 bfin_write_SICA_IWR1(-1);
641 /* Disable all peripheral wakeups except for the PLL event. */
643 bfin_write_SIC_IWR0(1);
644 bfin_write_SIC_IWR1(0);
646 bfin_write_SIC_IWR2(0);
648 #elif defined(SICA_IWR0)
649 bfin_write_SICA_IWR0(1);
650 bfin_write_SICA_IWR1(0);
651 #elif defined(SIC_IWR)
652 bfin_write_SIC_IWR(1);
657 /* Always programming PLL_LOCKCNT avoids Anomaly 05000430 */
658 bfin_write_PLL_LOCKCNT(CONFIG_PLL_LOCKCNT_VAL);
662 /* Only reprogram when needed to avoid triggering unnecessary
663 * PLL relock sequences.
665 if (vr_ctl != CONFIG_VR_CTL_VAL) {
667 bfin_write_VR_CTL(CONFIG_VR_CTL_VAL);
674 bfin_write_PLL_DIV(CONFIG_PLL_DIV_VAL);
678 /* Only reprogram when needed to avoid triggering unnecessary
679 * PLL relock sequences.
681 if (ANOMALY_05000242 || bfin_read_PLL_CTL() != CONFIG_PLL_CTL_VAL) {
683 bfin_write_PLL_CTL(CONFIG_PLL_CTL_VAL);
690 /* Restore all peripheral wakeups. */
692 bfin_write_SIC_IWR0(-1);
693 bfin_write_SIC_IWR1(-1);
695 bfin_write_SIC_IWR2(-1);
697 #elif defined(SICA_IWR0)
698 bfin_write_SICA_IWR0(-1);
699 bfin_write_SICA_IWR1(-1);
700 #elif defined(SIC_IWR)
701 bfin_write_SIC_IWR(-1);
707 #endif /* __ADSPBF60x__ */
714 __attribute__((always_inline)) static inline void
715 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 if (CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
725 unsigned int sdivR, vcoR;
726 int dividend = sdivB * divB * vcoR;
727 int divisor = vcoB * sdivR;
728 unsigned int quotient;
733 sdivR = bfin_read_CGU_DIV();
734 sdivR = ((sdivR >> 8) & 0x1f) * ((sdivR >> 5) & 0x7);
735 vcoR = (bfin_read_CGU_CTL() >> 8) & 0x7f;
737 sdivR = bfin_read_PLL_DIV() & 0xf;
738 vcoR = (bfin_read_PLL_CTL() >> 9) & 0x3f;
741 for (quotient = 0; dividend > 0; ++quotient)
743 serial_early_put_div(quotient - ANOMALY_05000230);
750 __attribute__((always_inline)) static inline void
751 program_memory_controller(ADI_BOOT_DATA *bs, bool put_into_srfs)
755 if (!CONFIG_MEM_SIZE)
765 if (CONFIG_BFIN_GET_DCLK_M == 125)
767 else if (CONFIG_BFIN_GET_DCLK_M == 133)
769 else if (CONFIG_BFIN_GET_DCLK_M == 150)
771 else if (CONFIG_BFIN_GET_DCLK_M == 166)
773 else if (CONFIG_BFIN_GET_DCLK_M == 200)
775 else if (CONFIG_BFIN_GET_DCLK_M == 225)
777 else if (CONFIG_BFIN_GET_DCLK_M == 250)
781 for (i = 0; i < ARRAY_SIZE(ddr_config_table); i++)
782 if (CONFIG_BFIN_GET_DCLK_M == ddr_config_table[i].ddr_clk)
786 #ifndef CONFIG_DMC_DDRCFG
787 bfin_write_DMC0_CFG(ddr_config_table[i].dmc_ddrcfg);
789 bfin_write_DMC0_CFG(CONFIG_DMC_DDRCFG);
791 #ifndef CONFIG_DMC_DDRTR0
792 bfin_write_DMC0_TR0(ddr_config_table[i].dmc_ddrtr0);
794 bfin_write_DMC0_TR0(CONFIG_DMC_DDRTR0);
796 #ifndef CONFIG_DMC_DDRTR1
797 bfin_write_DMC0_TR1(ddr_config_table[i].dmc_ddrtr1);
799 bfin_write_DMC0_TR1(CONFIG_DMC_DDRTR1);
801 #ifndef CONFIG_DMC_DDRTR2
802 bfin_write_DMC0_TR2(ddr_config_table[i].dmc_ddrtr2);
804 bfin_write_DMC0_TR2(CONFIG_DMC_DDRTR2);
806 #ifndef CONFIG_DMC_DDRMR
807 bfin_write_DMC0_MR(ddr_config_table[i].dmc_ddrmr);
809 bfin_write_DMC0_MR(CONFIG_DMC_DDRMR);
811 #ifndef CONFIG_DMC_DDREMR1
812 bfin_write_DMC0_EMR1(ddr_config_table[i].dmc_ddrmr1);
814 bfin_write_DMC0_EMR1(CONFIG_DMC_DDREMR1);
816 #ifndef CONFIG_DMC_DDRCTL
817 bfin_write_DMC0_CTL(ddr_config_table[i].dmc_ddrctl);
819 bfin_write_DMC0_CTL(CONFIG_DMC_DDRCTL);
823 while (!(bfin_read_DMC0_STAT() & MEMINITDONE))
826 dlldatacycle = (bfin_read_DMC0_STAT() & PHYRDPHASE) >>
828 dll_ctl = bfin_read_DMC0_DLLCTL();
830 bfin_write_DMC0_DLLCTL(dll_ctl | (dlldatacycle << DATACYC_OFFSET));
833 while (!(bfin_read_DMC0_STAT() & DLLCALDONE))
837 #else /* __ADSPBF60x__ */
839 /* Program the external memory controller before we come out of
840 * self-refresh. This only works with our SDRAM controller.
843 # ifdef CONFIG_EBIU_SDRRC_VAL
844 bfin_write_EBIU_SDRRC(CONFIG_EBIU_SDRRC_VAL);
846 # ifdef CONFIG_EBIU_SDBCTL_VAL
847 bfin_write_EBIU_SDBCTL(CONFIG_EBIU_SDBCTL_VAL);
849 # ifdef CONFIG_EBIU_SDGCTL_VAL
850 bfin_write_EBIU_SDGCTL(CONFIG_EBIU_SDGCTL_VAL);
856 /* Now that we've reprogrammed, take things out of self refresh. */
858 #if defined(EBIU_RSTCTL)
859 bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() & ~(SRREQ));
860 #elif defined(EBIU_SDGCTL)
861 bfin_write_EBIU_SDGCTL(bfin_read_EBIU_SDGCTL() & ~(SRFS));
866 /* Our DDR controller sucks and cannot be programmed while in
867 * self-refresh. So we have to pull it out before programming.
870 # ifdef CONFIG_EBIU_RSTCTL_VAL
871 bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() | 0x1 /*DDRSRESET*/ | CONFIG_EBIU_RSTCTL_VAL);
873 # ifdef CONFIG_EBIU_DDRCTL0_VAL
874 bfin_write_EBIU_DDRCTL0(CONFIG_EBIU_DDRCTL0_VAL);
876 # ifdef CONFIG_EBIU_DDRCTL1_VAL
877 bfin_write_EBIU_DDRCTL1(CONFIG_EBIU_DDRCTL1_VAL);
879 # ifdef CONFIG_EBIU_DDRCTL2_VAL
880 bfin_write_EBIU_DDRCTL2(CONFIG_EBIU_DDRCTL2_VAL);
882 # ifdef CONFIG_EBIU_DDRCTL3_VAL
883 /* default is disable, so don't need to force this */
884 bfin_write_EBIU_DDRCTL3(CONFIG_EBIU_DDRCTL3_VAL);
886 # ifdef CONFIG_EBIU_DDRQUE_VAL
887 bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE() | CONFIG_EBIU_DDRQUE_VAL);
891 #endif /* __ADSPBF60x__ */
895 __attribute__((always_inline)) static inline void
896 check_hibernation(ADI_BOOT_DATA *bs, u16 vr_ctl, bool put_into_srfs)
900 if (!CONFIG_MEM_SIZE)
905 if (bfin_read32(DPM0_RESTORE0) != 0) {
906 uint32_t reg = bfin_read_DMC0_CTL();
908 bfin_write_DMC0_CTL(reg);
910 while ((bfin_read_DMC0_STAT() & 0x8))
912 while (!(bfin_read_DMC0_STAT() & 0x1))
916 uint32_t *hibernate_magic = bfin_read32(DPM0_RESTORE4);
917 SSYNC(); /* make sure memory controller is done */
918 if (hibernate_magic[0] == 0xDEADBEEF) {
921 bfin_write_EVT15(hibernate_magic[1]);
922 bfin_write_IMASK(EVT_IVG15);
923 __asm__ __volatile__ (
924 /* load reti early to avoid anomaly 281 */
926 /* clear hibernate magic */
928 /* load stack pointer */
930 /* lower ourselves from reset ivg to ivg15 */
935 : "p"(hibernate_magic),
936 "d"(0x2000 /* jump.s 0 */),
944 /* Are we coming out of hibernate (suspend to memory) ?
945 * The memory layout is:
946 * 0x0: hibernate magic for anomaly 307 (0xDEADBEEF)
947 * 0x4: return address
950 * SCKELOW is unreliable on older parts (anomaly 307)
952 if (ANOMALY_05000307 || vr_ctl & 0x8000) {
953 uint32_t *hibernate_magic = 0;
956 if (hibernate_magic[0] == 0xDEADBEEF) {
958 bfin_write_EVT15(hibernate_magic[1]);
959 bfin_write_IMASK(EVT_IVG15);
960 __asm__ __volatile__ (
961 /* load reti early to avoid anomaly 281 */
963 /* clear hibernate magic */
965 /* load stack pointer */
967 /* lower ourselves from reset ivg to ivg15 */
971 : "p"(hibernate_magic), "d"(0x2000 /* jump.s 0 */)
981 BOOTROM_CALLED_FUNC_ATTR
982 void initcode(ADI_BOOT_DATA *bs)
984 ADI_BOOT_DATA bootstruct_scratch;
986 /* Setup NMI handler before anything else */
987 program_nmi_handler();
993 /* If the bootstruct is NULL, then it's because we're loading
994 * dynamically and not via LDR (bootrom). So set the struct to
995 * some scratch space.
998 bs = &bootstruct_scratch;
1001 bool put_into_srfs = maybe_self_refresh(bs);
1004 uint sdivB, divB, vcoB;
1005 program_early_devices(bs, &sdivB, &divB, &vcoB);
1008 u16 vr_ctl = program_clocks(bs, put_into_srfs);
1011 update_serial_clocks(bs, sdivB, divB, vcoB);
1014 program_memory_controller(bs, put_into_srfs);
1017 check_hibernation(bs, vr_ctl, put_into_srfs);
1020 program_async_controller(bs);
1022 #ifdef CONFIG_BFIN_BOOTROM_USES_EVT1
1024 /* Tell the bootrom where our entry point is so that it knows
1025 * where to jump to when finishing processing the LDR. This
1026 * allows us to avoid small jump blocks in the LDR, and also
1027 * works around anomaly 05000389 (init address in external
1028 * memory causes bootrom to trigger external addressing IVHW).
1030 if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS)
1031 bfin_write_EVT1(CONFIG_SYS_MONITOR_BASE);