3
* Custom IDEAS, Inc. <www.cideas.com>
4
* Gerald Van Baren <vanbaren@cideas.com>
6
* SPDX-License-Identifier: GPL-2.0+
10
#include <asm/u-boot.h>
17
#ifdef CONFIG_SHOW_BOOT_PROGRESS
18
#include <status_led.h>
21
#ifdef CONFIG_ETHER_LOOPBACK_TEST
22
extern void eth_loopback_test(void);
23
#endif /* CONFIG_ETHER_LOOPBACK_TEST */
26
#include "ioconfig.h" /* I/O configuration table */
29
* PBI Page Based Interleaving
30
* PSDMR_PBI page based interleaving
31
* 0 bank based interleaving
32
* External Address Multiplexing (EAMUX) adds a clock to address cycles
33
* (this can help with marginal board layouts)
34
* PSDMR_EAMUX adds a clock
36
* Buffer Command (BUFCMD) adds a clock to command cycles.
37
* PSDMR_BUFCMD adds a clock
40
#define CONFIG_PBI PSDMR_PBI
41
#define PESSIMISTIC_SDRAM 0
42
#define EAMUX 0 /* EST requires EAMUX */
48
#define INITIAL_SAMPLE_RATE 10016 /* Initial Daq sample rate */
49
#define INITIAL_RIGHT_JUST 0 /* Initial DAC right justification */
50
#define INITIAL_MCLK_DIVIDE 0 /* Initial MCLK Divide */
51
#define INITIAL_SAMPLE_64X 1 /* Initial 64x clocking mode */
52
#define INITIAL_SAMPLE_128X 0 /* Initial 128x clocking mode */
57
#define I2C_ADC_1_ADDR 0x0E /* I2C Address of the ADC #1 */
58
#define I2C_ADC_2_ADDR 0x0F /* I2C Address of the ADC #2 */
60
#define ADC_SDATA1_MASK 0x00020000 /* PA14 - CH12SDATA_PU */
61
#define ADC_SDATA2_MASK 0x00010000 /* PA15 - CH34SDATA_PU */
63
#define ADC_VREF_CAP 100 /* VREF capacitor in uF */
64
#define ADC_INITIAL_DELAY (10 * ADC_VREF_CAP) /* 10 usec per uF, in usec */
65
#define ADC_SDATA_DELAY 100 /* ADC SDATA release delay in usec */
66
#define ADC_CAL_DELAY (1000000 / INITIAL_SAMPLE_RATE * 4500)
67
/* Wait at least 4100 LRCLK's */
69
#define ADC_REG1_FRAME_START 0x80 /* Frame start */
70
#define ADC_REG1_GROUND_CAL 0x40 /* Ground calibration enable */
71
#define ADC_REG1_ANA_MOD_PDOWN 0x20 /* Analog modulator section in power down */
72
#define ADC_REG1_DIG_MOD_PDOWN 0x10 /* Digital modulator section in power down */
74
#define ADC_REG2_128x 0x80 /* Oversample at 128x */
75
#define ADC_REG2_CAL 0x40 /* System calibration enable */
76
#define ADC_REG2_CHANGE_SIGN 0x20 /* Change sign enable */
77
#define ADC_REG2_LR_DISABLE 0x10 /* Left/Right output disable */
78
#define ADC_REG2_HIGH_PASS_DIS 0x08 /* High pass filter disable */
79
#define ADC_REG2_SLAVE_MODE 0x04 /* Slave mode */
80
#define ADC_REG2_DFS 0x02 /* Digital format select */
81
#define ADC_REG2_MUTE 0x01 /* Mute */
83
#define ADC_REG7_ADDR_ENABLE 0x80 /* Address enable */
84
#define ADC_REG7_PEAK_ENABLE 0x40 /* Peak enable */
85
#define ADC_REG7_PEAK_UPDATE 0x20 /* Peak update */
86
#define ADC_REG7_PEAK_FORMAT 0x10 /* Peak display format */
87
#define ADC_REG7_DIG_FILT_PDOWN 0x04 /* Digital filter power down enable */
88
#define ADC_REG7_FIR2_IN_EN 0x02 /* External FIR2 input enable */
89
#define ADC_REG7_PSYCHO_EN 0x01 /* External pyscho filter input enable */
95
#define I2C_DAC_ADDR 0x11 /* I2C Address of the DAC */
97
#define DAC_RST_MASK 0x00008000 /* PA16 - DAC_RST* */
98
#define DAC_RESET_DELAY 100 /* DAC reset delay in usec */
99
#define DAC_INITIAL_DELAY 5000 /* DAC initialization delay in usec */
101
#define DAC_REG1_AMUTE 0x80 /* Auto-mute */
103
#define DAC_REG1_LEFT_JUST_24_BIT (0 << 4) /* Fmt 0: Left justified 24 bit */
104
#define DAC_REG1_I2S_24_BIT (1 << 4) /* Fmt 1: I2S up to 24 bit */
105
#define DAC_REG1_RIGHT_JUST_16BIT (2 << 4) /* Fmt 2: Right justified 16 bit */
106
#define DAC_REG1_RIGHT_JUST_24BIT (3 << 4) /* Fmt 3: Right justified 24 bit */
107
#define DAC_REG1_RIGHT_JUST_20BIT (4 << 4) /* Fmt 4: Right justified 20 bit */
108
#define DAC_REG1_RIGHT_JUST_18BIT (5 << 4) /* Fmt 5: Right justified 18 bit */
110
#define DAC_REG1_DEM_NO (0 << 2) /* No De-emphasis */
111
#define DAC_REG1_DEM_44KHZ (1 << 2) /* 44.1KHz De-emphasis */
112
#define DAC_REG1_DEM_48KHZ (2 << 2) /* 48KHz De-emphasis */
113
#define DAC_REG1_DEM_32KHZ (3 << 2) /* 32KHz De-emphasis */
115
#define DAC_REG1_SINGLE 0 /* 4- 50KHz sample rate */
116
#define DAC_REG1_DOUBLE 1 /* 50-100KHz sample rate */
117
#define DAC_REG1_QUAD 2 /* 100-200KHz sample rate */
118
#define DAC_REG1_DSD 3 /* Direct Stream Data, DSD */
120
#define DAC_REG5_INVERT_A 0x80 /* Invert channel A */
121
#define DAC_REG5_INVERT_B 0x40 /* Invert channel B */
122
#define DAC_REG5_I2C_MODE 0x20 /* Control port (I2C) mode */
123
#define DAC_REG5_POWER_DOWN 0x10 /* Power down mode */
124
#define DAC_REG5_MUTEC_A_B 0x08 /* Mutec A=B */
125
#define DAC_REG5_FREEZE 0x04 /* Freeze */
126
#define DAC_REG5_MCLK_DIV 0x02 /* MCLK divide by 2 */
127
#define DAC_REG5_RESERVED 0x01 /* Reserved */
130
* Check Board Identity:
140
phys_size_t initdram(int board_type)
142
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
143
volatile memctl8260_t *memctl = &immap->im_memctl;
144
volatile uchar c = 0;
145
volatile uchar *ramaddr = (uchar *)(CONFIG_SYS_SDRAM_BASE + 0x8);
146
uint psdmr = CONFIG_SYS_PSDMR;
148
uint psrt = 14; /* for no SPD */
149
uint chipselects = 1; /* for no SPD */
150
uint sdram_size = CONFIG_SYS_SDRAM0_SIZE * 1024 * 1024; /* for no SPD */
151
uint or = CONFIG_SYS_OR2_PRELIM; /* for no SPD */
153
#ifdef SDRAM_SPD_ADDR
169
#ifdef SDRAM_SPD_ADDR
170
/* Keep the compiler from complaining about potentially uninitialized vars */
171
data_width = chipselects = rows = banks = cols = caslatency = psrt =
175
* Read the SDRAM SPD EEPROM via I2C.
177
i2c_read(SDRAM_SPD_ADDR, 0, 1, &data, 1);
179
for (j = 1; j < 64; j++) { /* read only the checksummed bytes */
180
/* note: the I2C address autoincrements when alen == 0 */
181
i2c_read(SDRAM_SPD_ADDR, 0, 0, &data, 1);
183
chipselects = data & 0x0F;
187
data_width |= data << 8;
194
* Refresh rate: this assumes the prescaler is set to
195
* approximately 1uSec per tick.
197
switch (data & 0x7F) {
200
psrt = 14; /* 15.625uS */
203
psrt = 2; /* 3.9uS */
206
psrt = 6; /* 7.8uS */
209
psrt = 29; /* 31.3uS */
212
psrt = 60; /* 62.5uS */
215
psrt = 120; /* 125uS */
221
caslatency = 3; /* default CL */
222
#if(PESSIMISTIC_SDRAM)
223
if ((data & 0x04) != 0)
225
else if ((data & 0x02) != 0)
227
else if ((data & 0x01) != 0)
230
if ((data & 0x01) != 0)
232
else if ((data & 0x02) != 0)
234
else if ((data & 0x04) != 0)
238
printf("WARNING: Unknown CAS latency 0x%02X, using 3\n", data);
240
} else if (j == 63) {
242
printf("WARNING: Configuration data checksum failure:" " is 0x%02x, calculated 0x%02x\n", data, cksum);
248
/* We don't trust CL less than 2 (only saw it on an old 16MByte DIMM) */
249
if (caslatency < 2) {
250
printf("WARNING: CL was %d, forcing to 2\n", caslatency);
254
printf("WARNING: This doesn't look good, rows = %d, should be <= 14\n",
259
printf("WARNING: This doesn't look good, columns = %d, should be <= 11\n",
264
if ((data_width != 64) && (data_width != 72)) {
265
printf("WARNING: SDRAM width unsupported, is %d, expected 64 or 72.\n",
268
width = 3; /* 2^3 = 8 bytes = 64 bits wide */
270
* Convert banks into log2(banks)
279
sdram_size = 1 << (rows + cols + banks + width);
281
#if(CONFIG_PBI == 0) /* bank-based interleaving */
282
rowst = ((32 - 6) - (rows + cols + width)) * 2;
284
rowst = 32 - (rows + banks + cols + width);
287
or = ~(sdram_size - 1) | /* SDAM address mask */
288
((banks - 1) << 13) | /* banks per device */
289
(rowst << 9) | /* rowst */
290
((rows - 9) << 6); /* numr */
292
memctl->memc_or2 = or;
295
* SDAM specifies the number of columns that are multiplexed
296
* (reference AN2165/D), defined to be (columns - 6) for page
297
* interleave, (columns - 8) for bank interleave.
299
* BSMA is 14 - max(rows, cols). The bank select lines come
300
* into play above the highest "address" line going into the
303
#if(CONFIG_PBI == 0) /* bank-based interleaving */
305
bsma = ((31 - width) - 14) - ((rows > cols) ? rows : cols);
309
bsma = ((31 - width) - 14) - ((rows > cols) ? rows : cols);
312
#if(PESSIMISTIC_SDRAM)
313
psdmr = (CONFIG_PBI | PSDMR_RFEN | PSDMR_RFRC_16_CLK |
314
PSDMR_PRETOACT_8W | PSDMR_ACTTORW_8W | PSDMR_WRC_4C |
315
PSDMR_EAMUX | PSDMR_BUFCMD) | caslatency |
316
((caslatency - 1) << 6) | /* LDOTOPRE is CL - 1 */
317
(sdam << 24) | (bsma << 21) | (sda10 << 18);
319
psdmr = (CONFIG_PBI | PSDMR_RFEN | PSDMR_RFRC_7_CLK |
320
PSDMR_PRETOACT_3W | /* 1 for 7E parts (fast PC-133) */
321
PSDMR_ACTTORW_2W | /* 1 for 7E parts (fast PC-133) */
322
PSDMR_WRC_1C | /* 1 clock + 7nSec */
324
caslatency | ((caslatency - 1) << 6) | /* LDOTOPRE is CL - 1 */
325
(sdam << 24) | (bsma << 21) | (sda10 << 18);
330
* Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
332
* "At system reset, initialization software must set up the
333
* programmable parameters in the memory controller banks registers
334
* (ORx, BRx, P/LSDMR). After all memory parameters are configured,
335
* system software should execute the following initialization sequence
336
* for each SDRAM device.
338
* 1. Issue a PRECHARGE-ALL-BANKS command
339
* 2. Issue eight CBR REFRESH commands
340
* 3. Issue a MODE-SET command to initialize the mode register
342
* Quote from Micron MT48LC8M16A2 data sheet:
344
* "...the SDRAM requires a 100uS delay prior to issuing any
345
* command other than a COMMAND INHIBIT or NOP. Starting at some
346
* point during this 100uS period and continuing at least through
347
* the end of this period, COMMAND INHIBIT or NOP commands should
350
* "Once the 100uS delay has been satisfied with at least one COMMAND
351
* INHIBIT or NOP command having been applied, a /PRECHARGE command/
352
* should be applied. All banks must then be precharged, thereby
353
* placing the device in the all banks idle state."
355
* "Once in the idle state, /two/ AUTO REFRESH cycles must be
356
* performed. After the AUTO REFRESH cycles are complete, the
357
* SDRAM is ready for mode register programming."
359
* (/emphasis/ mine, gvb)
361
* The way I interpret this, Micron start up sequence is:
362
* 1. Issue a PRECHARGE-BANK command (initial precharge)
363
* 2. Issue a PRECHARGE-ALL-BANKS command ("all banks ... precharged")
364
* 3. Issue two (presumably, doing eight is OK) CBR REFRESH commands
365
* 4. Issue a MODE-SET command to initialize the mode register
369
* The initial commands are executed by setting P/LSDMR[OP] and
370
* accessing the SDRAM with a single-byte transaction."
372
* The appropriate BRx/ORx registers have already been set when we
373
* get here. The SDRAM can be accessed at the address CONFIG_SYS_SDRAM_BASE.
376
memctl->memc_mptpr = CONFIG_SYS_MPTPR;
377
memctl->memc_psrt = psrt;
379
memctl->memc_psdmr = psdmr | PSDMR_OP_PREA;
382
memctl->memc_psdmr = psdmr | PSDMR_OP_CBRR;
383
for (i = 0; i < 8; i++)
386
memctl->memc_psdmr = psdmr | PSDMR_OP_MRW;
389
memctl->memc_psdmr = psdmr | PSDMR_OP_NORM | PSDMR_RFEN;
393
* Do it a second time for the second set of chips if the DIMM has
394
* two chip selects (double sided).
396
if (chipselects > 1) {
397
ramaddr += sdram_size;
399
memctl->memc_br3 = CONFIG_SYS_BR3_PRELIM + sdram_size;
400
memctl->memc_or3 = or;
402
memctl->memc_psdmr = psdmr | PSDMR_OP_PREA;
405
memctl->memc_psdmr = psdmr | PSDMR_OP_CBRR;
406
for (i = 0; i < 8; i++)
409
memctl->memc_psdmr = psdmr | PSDMR_OP_MRW;
412
memctl->memc_psdmr = psdmr | PSDMR_OP_NORM | PSDMR_RFEN;
416
/* return total ram size */
417
return (sdram_size * chipselects);
420
/*-----------------------------------------------------------------------
421
* Board Control Functions
423
void board_poweroff(void)
425
while (1); /* hang forever */
429
#ifdef CONFIG_MISC_INIT_R
430
/* ------------------------------------------------------------------------- */
431
int misc_init_r(void)
434
* Note: iop is used by the I2C macros, and iopa by the ADC/DAC initialization.
436
volatile ioport_t *iopa =
437
ioport_addr((immap_t *)CONFIG_SYS_IMMR, 0 /* port A */ );
438
volatile ioport_t *iop =
439
ioport_addr((immap_t *)CONFIG_SYS_IMMR, I2C_PORT);
441
int reg; /* I2C register value */
442
char *ep; /* Environment pointer */
443
char str_buf[12]; /* sprintf output buffer */
444
int sample_rate; /* ADC/DAC sample rate */
445
int sample_64x; /* Use 64/4 clocking for the ADC/DAC */
446
int sample_128x; /* Use 128/4 clocking for the ADC/DAC */
447
int right_just; /* Is the data to the DAC right justified? */
448
int mclk_divide; /* MCLK Divide */
449
int quiet; /* Quiet or minimal output mode */
453
if ((ep = getenv("quiet")) != NULL)
454
quiet = simple_strtol(ep, NULL, 10);
456
setenv("quiet", "0");
459
* SACSng custom initialization:
460
* Start the ADC and DAC clocks, since the Crystal parts do not
461
* work on the I2C bus until the clocks are running.
464
sample_rate = INITIAL_SAMPLE_RATE;
465
if ((ep = getenv("DaqSampleRate")) != NULL)
466
sample_rate = simple_strtol(ep, NULL, 10);
468
sample_64x = INITIAL_SAMPLE_64X;
469
sample_128x = INITIAL_SAMPLE_128X;
470
if ((ep = getenv("Daq64xSampling")) != NULL) {
471
sample_64x = simple_strtol(ep, NULL, 10);
477
if ((ep = getenv("Daq128xSampling")) != NULL) {
478
sample_128x = simple_strtol(ep, NULL, 10);
487
* Stop the clocks and wait for at least 1 LRCLK period
488
* to make sure the clocking has really stopped.
491
udelay((1000000 / sample_rate) * NUM_LRCLKS_TO_STABILIZE);
494
* Initialize the clocks with the new rates
496
Daq_Init_Clocks(sample_rate, sample_64x);
497
sample_rate = Daq_Get_SampleRate();
500
* Start the clocks and wait for at least 1 LRCLK period
501
* to make sure the clocking has become stable.
503
Daq_Start_Clocks(sample_rate);
504
udelay((1000000 / sample_rate) * NUM_LRCLKS_TO_STABILIZE);
506
sprintf(str_buf, "%d", sample_rate);
507
setenv("DaqSampleRate", str_buf);
510
setenv("Daq64xSampling", "1");
511
setenv("Daq128xSampling", NULL);
513
setenv("Daq64xSampling", NULL);
514
setenv("Daq128xSampling", "1");
518
* Display the ADC/DAC clocking information
521
Daq_Display_Clocks();
524
* Determine the DAC data justification
527
right_just = INITIAL_RIGHT_JUST;
528
if ((ep = getenv("DaqDACRightJustified")) != NULL)
529
right_just = simple_strtol(ep, NULL, 10);
531
sprintf(str_buf, "%d", right_just);
532
setenv("DaqDACRightJustified", str_buf);
535
* Determine the DAC MCLK Divide
538
mclk_divide = INITIAL_MCLK_DIVIDE;
539
if ((ep = getenv("DaqDACMClockDivide")) != NULL)
540
mclk_divide = simple_strtol(ep, NULL, 10);
542
sprintf(str_buf, "%d", mclk_divide);
543
setenv("DaqDACMClockDivide", str_buf);
546
* Initializing the I2C address in the Crystal A/Ds:
548
* 1) Wait for VREF cap to settle (10uSec per uF)
549
* 2) Release pullup on SDATA
550
* 3) Write the I2C address to register 6
551
* 4) Enable address matching by setting the MSB in register 7
555
printf("Initializing the ADC...\n");
557
udelay(ADC_INITIAL_DELAY); /* 10uSec per uF of VREF cap */
559
iopa->pdat &= ~ADC_SDATA1_MASK; /* release SDATA1 */
560
udelay(ADC_SDATA_DELAY); /* arbitrary settling time */
562
i2c_reg_write(0x00, 0x06, I2C_ADC_1_ADDR); /* set address */
563
i2c_reg_write(I2C_ADC_1_ADDR, 0x07, /* turn on ADDREN */
564
ADC_REG7_ADDR_ENABLE);
566
i2c_reg_write(I2C_ADC_1_ADDR, 0x02, /* 128x, slave mode, !HPEN */
567
(sample_64x ? 0 : ADC_REG2_128x) |
568
ADC_REG2_HIGH_PASS_DIS | ADC_REG2_SLAVE_MODE);
570
reg = i2c_reg_read(I2C_ADC_1_ADDR, 0x06) & 0x7F;
571
if (reg != I2C_ADC_1_ADDR) {
572
printf("Init of ADC U10 failed: address is 0x%02X should be 0x%02X\n",
573
reg, I2C_ADC_1_ADDR);
576
iopa->pdat &= ~ADC_SDATA2_MASK; /* release SDATA2 */
577
udelay(ADC_SDATA_DELAY); /* arbitrary settling time */
579
/* set address (do not set ADDREN yet) */
580
i2c_reg_write(0x00, 0x06, I2C_ADC_2_ADDR);
582
i2c_reg_write(I2C_ADC_2_ADDR, 0x02, /* 64x, slave mode, !HPEN */
583
(sample_64x ? 0 : ADC_REG2_128x) |
584
ADC_REG2_HIGH_PASS_DIS | ADC_REG2_SLAVE_MODE);
586
reg = i2c_reg_read(I2C_ADC_2_ADDR, 0x06) & 0x7F;
587
if (reg != I2C_ADC_2_ADDR) {
588
printf("Init of ADC U15 failed: address is 0x%02X should be 0x%02X\n",
589
reg, I2C_ADC_2_ADDR);
592
i2c_reg_write(I2C_ADC_1_ADDR, 0x01, /* set FSTART and GNDCAL */
593
ADC_REG1_FRAME_START | ADC_REG1_GROUND_CAL);
595
i2c_reg_write(I2C_ADC_1_ADDR, 0x02, /* Start calibration */
596
(sample_64x ? 0 : ADC_REG2_128x) |
598
ADC_REG2_HIGH_PASS_DIS | ADC_REG2_SLAVE_MODE);
600
udelay(ADC_CAL_DELAY); /* a minimum of 4100 LRCLKs */
601
i2c_reg_write(I2C_ADC_1_ADDR, 0x01, 0x00); /* remove GNDCAL */
604
* Now that we have synchronized the ADC's, enable address
605
* selection on the second ADC as well as the first.
607
i2c_reg_write(I2C_ADC_2_ADDR, 0x07, ADC_REG7_ADDR_ENABLE);
610
* Initialize the Crystal DAC
612
* Two of the config lines are used for I2C so we have to set them
613
* to the proper initialization state without inadvertantly
614
* sending an I2C "start" sequence. When we bring the I2C back to
615
* the normal state, we send an I2C "stop" sequence.
618
printf("Initializing the DAC...\n");
621
* Bring the I2C clock and data lines low for initialization
630
iopa->pdat &= ~DAC_RST_MASK;
631
udelay(DAC_RESET_DELAY);
633
/* Release the DAC reset */
634
iopa->pdat |= DAC_RST_MASK;
635
udelay(DAC_INITIAL_DELAY);
639
* Enable control port (I2C mode)
640
* Going into power down
642
i2c_reg_write(I2C_DAC_ADDR, 0x05,
643
DAC_REG5_I2C_MODE | DAC_REG5_POWER_DOWN);
647
* Enable control port (I2C mode)
648
* Going into power down
652
i2c_reg_write(I2C_DAC_ADDR, 0x05,
654
DAC_REG5_POWER_DOWN |
655
(mclk_divide ? DAC_REG5_MCLK_DIV : 0));
660
* . Format 0, left justified 24 bits
661
* . Format 3, right justified 24 bits
663
* . Single speed mode
664
* . Double speed mode
666
i2c_reg_write(I2C_DAC_ADDR, 0x01,
667
(right_just ? DAC_REG1_RIGHT_JUST_24BIT :
668
DAC_REG1_LEFT_JUST_24_BIT) |
671
50000 ? DAC_REG1_DOUBLE : DAC_REG1_SINGLE));
673
sprintf(str_buf, "%d",
674
sample_rate >= 50000 ? DAC_REG1_DOUBLE : DAC_REG1_SINGLE);
675
setenv("DaqDACFunctionalMode", str_buf);
679
* Enable control port (I2C mode)
684
i2c_reg_write(I2C_DAC_ADDR, 0x05,
686
(mclk_divide ? DAC_REG5_MCLK_DIV : 0));
689
* Create a I2C stop condition:
690
* low->high on data while clock is high.
700
#ifdef CONFIG_ETHER_LOOPBACK_TEST
702
* Run the Ethernet loopback test
705
#endif /* CONFIG_ETHER_LOOPBACK_TEST */
707
#ifdef CONFIG_SHOW_BOOT_PROGRESS
709
* Turn off the RED fail LED now that we are up and running.
711
status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
717
#ifdef CONFIG_SHOW_BOOT_PROGRESS
719
* Show boot status: flash the LED if something goes wrong, indicating
720
* that last thing that worked and thus, by implication, what is broken.
722
* This stores the last OK value in RAM so this will not work properly
723
* before RAM is initialized. Since it is being used for indicating
724
* boot status (i.e. after RAM is initialized), that is OK.
726
static void flash_code(uchar number, uchar modulo, uchar digits)
731
* Recursively do upper digits.
734
flash_code(number / modulo, modulo, digits - 1);
736
number = number % modulo;
739
* Zero is indicated by one long flash (dash).
742
status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
744
status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
748
* Non-zero is indicated by short flashes, one per count.
750
for (j = 0; j < number; j++) {
751
status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
753
status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
758
* Inter-digit pause: we've already waited 200 mSec, wait 1 sec total
763
static int last_boot_progress;
765
void show_boot_progress(int status)
770
last_boot_progress = status;
773
* If a specific failure code is given, flash this code
774
* else just use the last success code we've seen
777
last_boot_progress = -status;
780
* Flash this code 5 times
782
for (j = 0; j < 5; j++) {
784
* Houston, we have a problem.
785
* Blink the last OK status which indicates where things failed.
787
status_led_set(STATUS_LED_RED, STATUS_LED_ON);
788
flash_code(last_boot_progress, 5, 3);
791
* Delay 5 seconds between repetitions,
792
* with the fault LED blinking
794
for (i = 0; i < 5; i++) {
795
status_led_set(STATUS_LED_RED,
798
status_led_set(STATUS_LED_RED, STATUS_LED_ON);
804
* Reset the board to retry initialization.
806
do_reset(NULL, 0, 0, NULL);
809
#endif /* CONFIG_SHOW_BOOT_PROGRESS */
813
* The following are used to control the SPI chip selects for the SPI command.
815
#if defined(CONFIG_CMD_SPI)
817
#define SPI_ADC_CS_MASK 0x00000800
818
#define SPI_DAC_CS_MASK 0x00001000
820
static const u32 cs_mask[] = {
825
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
827
return bus == 0 && cs < sizeof(cs_mask) / sizeof(cs_mask[0]);
830
void spi_cs_activate(struct spi_slave *slave)
832
volatile ioport_t *iopd =
833
ioport_addr((immap_t *) CONFIG_SYS_IMMR, 3 /* port D */ );
835
iopd->pdat &= ~cs_mask[slave->cs];
838
void spi_cs_deactivate(struct spi_slave *slave)
840
volatile ioport_t *iopd =
841
ioport_addr((immap_t *) CONFIG_SYS_IMMR, 3 /* port D */ );
843
iopd->pdat |= cs_mask[slave->cs];
848
#endif /* CONFIG_MISC_INIT_R */