3
* Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
5
* SPDX-License-Identifier: GPL-2.0+
11
* How do I program the SDRAM Timing Register (SDRAM0_TR) for a specific SDRAM or DIMM?
13
* As an example, consider a case where PC133 memory with CAS Latency equal to 2 is being
14
* used with a 200MHz 405GP. For a typical 128Mb, PC133 SDRAM, the relevant minimum
15
* parameters from the datasheet are:
16
* Tclk = 7.5ns (CL = 2)
22
* If we are operating the 405GP with the MemClk output frequency set to 100 MHZ, the clock
23
* period is 10ns and the parameters needed for the Timing Register are:
24
* CASL = CL = 2 clock cycles
25
* PTA = Trp = 15ns / 10ns = 2 clock cycles
26
* CTP = Trc - Trcd - Trp = (60ns - 15ns - 15ns) / 10ns= 3 clock cycles
27
* LDF = 2 clock cycles (but can be extended to meet board-level timing)
28
* RFTA = Trfc = 66ns / 10ns= 7 clock cycles
29
* RCD = Trcd = 15ns / 10ns= 2 clock cycles
31
* The actual bit settings in the register would be:
40
* If Trfc is not specified in the datasheet for PC100 or PC133 memory, set RFTA = Trc
41
* instead. Figure 24 in the PC SDRAM Specification Rev. 1.7 shows refresh to active delay
42
* defined as Trc rather than Trfc.
43
* When using DIMM modules, most but not all of the required timing parameters can be read
44
* from the Serial Presence Detect (SPD) EEPROM on the module. Specifically, Trc and Trfc
45
* are not available from the EEPROM
50
#include <asm/processor.h>
51
#include <asm/ppc4xx.h>
52
#include <asm/ppc4xx-i2c.h>
54
#include "../common/common_util.h"
55
#include <stdio_dev.h>
59
DECLARE_GLOBAL_DATA_PTR;
62
#define ENABLE_ECC /* for ecc boards */
64
/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
65
#ifndef __ldiv_t_defined
67
long int quot; /* Quotient */
68
long int rem; /* Remainder */
70
extern ldiv_t ldiv (long int __numer, long int __denom);
71
# define __ldiv_t_defined 1
75
#define PLD_PART_REG PER_PLD_ADDR + 0
76
#define PLD_VERS_REG PER_PLD_ADDR + 1
77
#define PLD_BOARD_CFG_REG PER_PLD_ADDR + 2
78
#define PLD_IRQ_REG PER_PLD_ADDR + 3
79
#define PLD_COM_MODE_REG PER_PLD_ADDR + 4
80
#define PLD_EXT_CONF_REG PER_PLD_ADDR + 5
82
#define MEGA_BYTE (1024*1024)
85
unsigned char boardtype; /* Board revision and Population Options */
86
unsigned char cal; /* cas Latency (will be programmend as cal-1) */
87
unsigned char trp; /* datain27 in clocks */
88
unsigned char trcd; /* datain29 in clocks */
89
unsigned char tras; /* datain30 in clocks */
90
unsigned char tctp; /* tras - trcd in clocks */
91
unsigned char am; /* Address Mod (will be programmed as am-1) */
92
unsigned char sz; /* log binary => Size = (4MByte<<sz) 5 = 128, 4 = 64, 3 = 32, 2 = 16, 1=8 */
93
unsigned char ecc; /* if true, ecc is enabled */
95
#if defined(CONFIG_MIP405T)
96
const sdram_t sdram_table[] = {
97
{ 0x0F, /* MIP405T Rev A, 64MByte -1 Board */
98
3, /* Case Latenty = 3 */
99
3, /* trp 20ns / 7.5 ns datain[27] */
100
3, /* trcd 20ns /7.5 ns (datain[29]) */
101
6, /* tras 44ns /7.5 ns (datain[30]) */
102
4, /* tcpt 44 - 20ns = 24ns */
103
2, /* Address Mode = 2 (12x9x4) */
104
3, /* size value (32MByte) */
105
0}, /* ECC disabled */
106
{ 0xff, /* terminator */
116
const sdram_t sdram_table[] = {
117
{ 0x0f, /* Rev A, 128MByte -1 Board */
118
3, /* Case Latenty = 3 */
119
3, /* trp 20ns / 7.5 ns datain[27] */
120
3, /* trcd 20ns /7.5 ns (datain[29]) */
121
6, /* tras 44ns /7.5 ns (datain[30]) */
122
4, /* tcpt 44 - 20ns = 24ns */
123
3, /* Address Mode = 3 */
125
1}, /* ECC enabled */
126
{ 0x07, /* Rev A, 64MByte -2 Board */
127
3, /* Case Latenty = 3 */
128
3, /* trp 20ns / 7.5 ns datain[27] */
129
3, /* trcd 20ns /7.5 ns (datain[29]) */
130
6, /* tras 44ns /7.5 ns (datain[30]) */
131
4, /* tcpt 44 - 20ns = 24ns */
132
2, /* Address Mode = 2 */
134
1}, /* ECC enabled */
135
{ 0x03, /* Rev A, 128MByte -4 Board */
136
3, /* Case Latenty = 3 */
137
3, /* trp 20ns / 7.5 ns datain[27] */
138
3, /* trcd 20ns /7.5 ns (datain[29]) */
139
6, /* tras 44ns /7.5 ns (datain[30]) */
140
4, /* tcpt 44 - 20ns = 24ns */
141
3, /* Address Mode = 3 */
143
1}, /* ECC enabled */
144
{ 0x1f, /* Rev B, 128MByte -3 Board */
145
3, /* Case Latenty = 3 */
146
3, /* trp 20ns / 7.5 ns datain[27] */
147
3, /* trcd 20ns /7.5 ns (datain[29]) */
148
6, /* tras 44ns /7.5 ns (datain[30]) */
149
4, /* tcpt 44 - 20ns = 24ns */
150
3, /* Address Mode = 3 */
152
1}, /* ECC enabled */
153
{ 0x2f, /* Rev C, 128MByte -3 Board */
154
3, /* Case Latenty = 3 */
155
3, /* trp 20ns / 7.5 ns datain[27] */
156
3, /* trcd 20ns /7.5 ns (datain[29]) */
157
6, /* tras 44ns /7.5 ns (datain[30]) */
158
4, /* tcpt 44 - 20ns = 24ns */
159
3, /* Address Mode = 3 */
161
1}, /* ECC enabled */
162
{ 0xff, /* terminator */
171
#endif /*CONFIG_MIP405T */
172
void SDRAM_err (const char *s)
175
(void) get_clocks ();
181
serial_puts ("\n enable SDRAM_DEBUG for more info\n");
186
unsigned char get_board_revcfg (void)
188
out8 (PER_BOARD_ADDR, 0);
189
return (in8 (PER_BOARD_ADDR));
195
void write_hex (unsigned char i)
202
serial_putc (cc + 55);
204
serial_putc (cc + 48);
207
serial_putc (cc + 55);
209
serial_putc (cc + 48);
212
void write_4hex (unsigned long val)
214
write_hex ((unsigned char) (val >> 24));
215
write_hex ((unsigned char) (val >> 16));
216
write_hex ((unsigned char) (val >> 8));
217
write_hex ((unsigned char) val);
223
int init_sdram (void)
225
unsigned long tmp, baseaddr;
227
unsigned char trp_clocks,
231
unsigned char cal_val;
233
unsigned long sdram_tim, sdram_bank;
235
/*i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);*/
236
(void) get_clocks ();
240
mtdcr (EBC0_CFGADDR, PB7AP);
241
mtdcr (EBC0_CFGDATA, PLD_AP);
242
mtdcr (EBC0_CFGADDR, PB7CR);
243
mtdcr (EBC0_CFGDATA, PLD_CR);
244
/* THIS IS OBSOLETE */
245
/* set up the board rev reg*/
246
mtdcr (EBC0_CFGADDR, PB5AP);
247
mtdcr (EBC0_CFGDATA, BOARD_AP);
248
mtdcr (EBC0_CFGADDR, PB5CR);
249
mtdcr (EBC0_CFGDATA, BOARD_CR);
251
/* get all informations from PLD */
252
serial_puts ("\nPLD Part 0x");
253
bc = in8 (PLD_PART_REG);
255
serial_puts ("\nPLD Vers 0x");
256
bc = in8 (PLD_VERS_REG);
258
serial_puts ("\nBoard Rev 0x");
259
bc = in8 (PLD_BOARD_CFG_REG);
264
bc = in8 (PLD_PART_REG);
265
#if defined(CONFIG_MIP405T)
267
SDRAM_err ("U-Boot configured for a MIP405T not for a MIP405!!!\n");
269
if((bc & 0x80)==0x80)
270
SDRAM_err ("U-Boot configured for a MIP405 not for a MIP405T!!!\n");
272
/* set-up the chipselect machine */
273
mtdcr (EBC0_CFGADDR, PB0CR); /* get cs0 config reg */
274
tmp = mfdcr (EBC0_CFGDATA);
275
if ((tmp & 0x00002000) == 0) {
276
/* MPS Boot, set up the flash */
277
mtdcr (EBC0_CFGADDR, PB1AP);
278
mtdcr (EBC0_CFGDATA, FLASH_AP);
279
mtdcr (EBC0_CFGADDR, PB1CR);
280
mtdcr (EBC0_CFGDATA, FLASH_CR);
282
/* Flash boot, set up the MPS */
283
mtdcr (EBC0_CFGADDR, PB1AP);
284
mtdcr (EBC0_CFGDATA, MPS_AP);
285
mtdcr (EBC0_CFGADDR, PB1CR);
286
mtdcr (EBC0_CFGDATA, MPS_CR);
288
/* set up UART0 (CS2) and UART1 (CS3) */
289
mtdcr (EBC0_CFGADDR, PB2AP);
290
mtdcr (EBC0_CFGDATA, UART0_AP);
291
mtdcr (EBC0_CFGADDR, PB2CR);
292
mtdcr (EBC0_CFGDATA, UART0_CR);
293
mtdcr (EBC0_CFGADDR, PB3AP);
294
mtdcr (EBC0_CFGDATA, UART1_AP);
295
mtdcr (EBC0_CFGADDR, PB3CR);
296
mtdcr (EBC0_CFGDATA, UART1_CR);
297
bc = in8 (PLD_BOARD_CFG_REG);
299
serial_puts ("\nstart SDRAM Setup\n");
300
serial_puts ("\nBoard Rev: ");
305
baseaddr = CONFIG_SYS_SDRAM_BASE;
306
while (sdram_table[i].sz != 0xff) {
307
if (sdram_table[i].boardtype == bc)
311
if (sdram_table[i].boardtype != bc)
312
SDRAM_err ("No SDRAM table found for this board!!!\n");
314
serial_puts (" found table ");
318
/* since the ECC initialisation needs some time,
319
* we show that we're alive
321
if (sdram_table[i].ecc)
322
serial_puts ("\nInitializing SDRAM, Please stand by");
323
cal_val = sdram_table[i].cal - 1; /* Cas Latency */
324
trp_clocks = sdram_table[i].trp; /* 20ns / 7.5 ns datain[27] */
325
trcd_clocks = sdram_table[i].trcd; /* 20ns /7.5 ns (datain[29]) */
326
tras_clocks = sdram_table[i].tras; /* 44ns /7.5 ns (datain[30]) */
327
/* ctp = ((trp + tras) - trp - trcd) => tras - trcd */
328
/* trc_clocks is sum of trp_clocks + tras_clocks */
329
trc_clocks = trp_clocks + tras_clocks;
330
/* get SDRAM timing register */
331
mtdcr (SDRAM0_CFGADDR, SDRAM0_TR);
332
sdram_tim = mfdcr (SDRAM0_CFGDATA) & ~0x018FC01F;
333
/* insert CASL value */
334
sdram_tim |= ((unsigned long) (cal_val)) << 23;
335
/* insert PTA value */
336
sdram_tim |= ((unsigned long) (trp_clocks - 1)) << 18;
337
/* insert CTP value */
339
((unsigned long) (trc_clocks - trp_clocks -
341
/* insert LDF (always 01) */
342
sdram_tim |= ((unsigned long) 0x01) << 14;
343
/* insert RFTA value */
344
sdram_tim |= ((unsigned long) (trc_clocks - 4)) << 2;
345
/* insert RCD value */
346
sdram_tim |= ((unsigned long) (trcd_clocks - 1)) << 0;
348
tmp = ((unsigned long) (sdram_table[i].am - 1) << 13); /* AM = 3 */
349
/* insert SZ value; */
350
tmp |= ((unsigned long) sdram_table[i].sz << 17);
351
/* get SDRAM bank 0 register */
352
mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
353
sdram_bank = mfdcr (SDRAM0_CFGDATA) & ~0xFFCEE001;
354
sdram_bank |= (baseaddr | tmp | 0x01);
357
serial_puts ("sdtr: ");
358
write_4hex (sdram_tim);
362
/* write SDRAM timing register */
363
mtdcr (SDRAM0_CFGADDR, SDRAM0_TR);
364
mtdcr (SDRAM0_CFGDATA, sdram_tim);
367
serial_puts ("mb0cf: ");
368
write_4hex (sdram_bank);
372
/* write SDRAM bank 0 register */
373
mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
374
mtdcr (SDRAM0_CFGDATA, sdram_bank);
376
if (get_bus_freq (tmp) > 110000000) { /* > 110MHz */
377
/* get SDRAM refresh interval register */
378
mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
379
tmp = mfdcr (SDRAM0_CFGDATA) & ~0x3FF80000;
382
/* get SDRAM refresh interval register */
383
mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
384
tmp = mfdcr (SDRAM0_CFGDATA) & ~0x3FF80000;
387
/* write SDRAM refresh interval register */
388
mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
389
mtdcr (SDRAM0_CFGDATA, tmp);
390
/* enable ECC if used */
391
#if defined(ENABLE_ECC) && !defined(CONFIG_BOOT_PCI)
392
if (sdram_table[i].ecc) {
393
/* disable checking for all banks */
396
serial_puts ("disable ECC.. ");
398
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
399
tmp = mfdcr (SDRAM0_CFGDATA);
400
tmp &= 0xff0fffff; /* disable all banks */
401
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
402
/* set up SDRAM Controller with ECC enabled */
404
serial_puts ("setup SDRAM Controller.. ");
406
mtdcr (SDRAM0_CFGDATA, tmp);
407
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
408
tmp = (mfdcr (SDRAM0_CFGDATA) & ~0xFFE00000) | 0x90800000;
409
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
410
mtdcr (SDRAM0_CFGDATA, tmp);
413
serial_puts ("fill the memory..\n");
416
/* now, fill all the memory */
417
tmp = ((4 * MEGA_BYTE) << sdram_table[i].sz);
418
p = (unsigned long) 0;
419
while ((unsigned long) p < tmp) {
421
if (!((unsigned long) p % 0x00800000)) /* every 8MByte */
427
serial_puts ("enable ECC\n");
430
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
431
tmp = mfdcr (SDRAM0_CFGDATA);
432
tmp |= 0x00800000; /* enable bank 0 */
433
mtdcr (SDRAM0_CFGDATA, tmp);
438
/* enable SDRAM controller with no ECC, 32-bit SDRAM width, 16 byte burst */
439
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
440
tmp = (mfdcr (SDRAM0_CFGDATA) & ~0xFFE00000) | 0x80C00000;
441
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
442
mtdcr (SDRAM0_CFGDATA, tmp);
449
int board_early_init_f (void)
453
/*-------------------------------------------------------------------------+
454
| Interrupt controller setup for the PIP405 board.
455
| Note: IRQ 0-15 405GP internally generated; active high; level sensitive
456
| IRQ 16 405GP internally generated; active low; level sensitive
458
| IRQ 25 (EXT IRQ 0) SouthBridge; active low; level sensitive
459
| IRQ 26 (EXT IRQ 1) NMI: active low; level sensitive
460
| IRQ 27 (EXT IRQ 2) SMI: active Low; level sensitive
461
| IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
462
| IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
463
| IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
464
| IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
465
| Note for MIP405 board:
466
| An interrupt taken for the SouthBridge (IRQ 25) indicates that
467
| the Interrupt Controller in the South Bridge has caused the
468
| interrupt. The IC must be read to determine which device
469
| caused the interrupt.
471
+-------------------------------------------------------------------------*/
472
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
473
mtdcr (UIC0ER, 0x00000000); /* disable all ints */
474
mtdcr (UIC0CR, 0x00000000); /* set all to be non-critical (for now) */
475
mtdcr (UIC0PR, 0xFFFFFF80); /* set int polarities */
476
mtdcr (UIC0TR, 0x10000000); /* set int trigger levels */
477
mtdcr (UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority */
478
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
482
int board_early_init_r(void)
487
* since we are relocated, we can finally enable i-cache
488
* and set up the flash CS correctly
492
/* get and display boot mode */
493
mode = get_boot_mode();
495
printf("PCI Boot %s Map\n", (mode & BOOT_MPS) ?
498
printf("%s Boot\n", (mode & BOOT_MPS) ?
505
* Get some PLD Registers
508
unsigned short get_pld_parvers (void)
510
unsigned short result;
513
rc = in8 (PLD_PART_REG);
514
result = (unsigned short) rc << 8;
515
rc = in8 (PLD_VERS_REG);
521
void user_led0 (unsigned char on)
524
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) | 0x4));
526
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) & 0xfb));
530
void ide_set_reset (int idereset)
532
/* if reset = 1 IDE reset will be asserted */
534
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) | 0x1));
537
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) & 0xfe));
542
/* ------------------------------------------------------------------------- */
544
void get_pcbrev_var(unsigned char *pcbrev, unsigned char *var)
546
#if !defined(CONFIG_MIP405T)
547
unsigned char bc,rc,tmp;
550
bc = in8 (PLD_BOARD_CFG_REG);
554
for (i = 0; i < 4; i++) {
560
if(( (((bc>>4) & 0xf)==0x2) /* Rev C PCB or */
561
|| (((bc>>4) & 0xf)==0x1)) /* Rev B PCB with */
562
&& (rc==0x1)) /* Population Option 1 is a -3 */
564
*pcbrev=(bc >> 4) & 0xf;
568
bc = in8 (PLD_BOARD_CFG_REG);
569
*pcbrev=(bc >> 4) & 0xf;
575
* Check Board Identity:
577
/* serial String: "MIP405_1000" OR "MIP405T_1000" */
578
#if !defined(CONFIG_MIP405T)
579
#define BOARD_NAME "MIP405"
581
#define BOARD_NAME "MIP405T"
584
int checkboard (void)
587
unsigned char bc, var;
589
backup_t *b = (backup_t *) s;
592
get_pcbrev_var(&bc,&var);
593
i = getenv_f("serial#", (char *)s, 32);
594
if ((i == 0) || strncmp ((char *)s, BOARD_NAME,sizeof(BOARD_NAME))) {
595
get_backup_values (b);
596
if (strncmp (b->signature, "MPL\0", 4) != 0) {
597
puts ("### No HW ID - assuming " BOARD_NAME);
598
printf ("-%d Rev %c", var, 'A' + bc);
600
b->serial_name[sizeof(BOARD_NAME)-1] = 0;
601
printf ("%s-%d Rev %c SN: %s", b->serial_name, var,
602
'A' + bc, &b->serial_name[sizeof(BOARD_NAME)]);
605
s[sizeof(BOARD_NAME)-1] = 0;
606
printf ("%s-%d Rev %c SN: %s", s, var,'A' + bc,
607
&s[sizeof(BOARD_NAME)]);
609
bc = in8 (PLD_EXT_CONF_REG);
610
printf (" Boot Config: 0x%x\n", bc);
615
/* ------------------------------------------------------------------------- */
616
/* ------------------------------------------------------------------------- */
618
initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of
619
the necessary info for SDRAM controller configuration
621
/* ------------------------------------------------------------------------- */
622
/* ------------------------------------------------------------------------- */
623
static int test_dram (unsigned long ramsize);
625
phys_size_t initdram (int board_type)
628
unsigned long bank_reg[4], tmp, bank_size;
630
unsigned long TotalSize;
632
/* since the DRAM controller is allready set up, calculate the size with the
634
mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
635
bank_reg[0] = mfdcr (SDRAM0_CFGDATA);
636
mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR);
637
bank_reg[1] = mfdcr (SDRAM0_CFGDATA);
638
mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR);
639
bank_reg[2] = mfdcr (SDRAM0_CFGDATA);
640
mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR);
641
bank_reg[3] = mfdcr (SDRAM0_CFGDATA);
643
for (i = 0; i < 4; i++) {
644
if ((bank_reg[i] & 0x1) == 0x1) {
645
tmp = (bank_reg[i] >> 17) & 0x7;
646
bank_size = 4 << tmp;
647
TotalSize += bank_size;
650
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
651
tmp = mfdcr (SDRAM0_CFGDATA);
657
test_dram (TotalSize * MEGA_BYTE);
658
return (TotalSize * MEGA_BYTE);
661
/* ------------------------------------------------------------------------- */
664
static int test_dram (unsigned long ramsize)
667
mem_test (0L, ramsize, 1);
669
/* not yet implemented */
673
/* used to check if the time in RTC is valid */
674
static unsigned long start;
675
static struct rtc_time tm;
677
int misc_init_r (void)
679
/* adjust flash start and size as well as the offset */
680
gd->bd->bi_flashstart=0-flash_info[0].size;
681
gd->bd->bi_flashsize=flash_info[0].size-CONFIG_SYS_MONITOR_LEN;
682
gd->bd->bi_flashoffset=0;
684
/* check, if RTC is running */
687
/* if MIP405 has booted from PCI, reset CCR0[24] as described in errata PCI_18 */
688
if (mfdcr(CPC0_PSR) & PSR_ROM_LOC)
689
mtspr(SPRN_CCR0, (mfspr(SPRN_CCR0) & ~0x80));
695
void print_mip405_rev (void)
697
unsigned char part, vers, pcbrev, var;
699
get_pcbrev_var(&pcbrev,&var);
700
part = in8 (PLD_PART_REG);
701
vers = in8 (PLD_VERS_REG);
702
printf ("Rev: " BOARD_NAME "-%d Rev %c PLD %d Vers %d\n",
703
var, pcbrev + 'A', part & 0x7F, vers);
707
extern int mk_date (char *, struct rtc_time *);
709
int last_stage_init (void)
712
struct rtc_time newtm;
715
/* write correct LED configuration */
716
if (miiphy_write("ppc_4xx_eth0", 0x1, 0x14, 0x2402) != 0) {
717
printf ("Error writing to the PHY\n");
719
/* since LED/CFG2 is not connected on the -2,
720
* write to correct capability information */
721
if (miiphy_write("ppc_4xx_eth0", 0x1, 0x4, 0x01E1) != 0) {
722
printf ("Error writing to the PHY\n");
725
stdio_print_current_devices ();
727
/* check if RTC time is valid */
728
stop=get_timer(start);
729
while(stop<1200) { /* we wait 1.2 sec to check if the RTC is running */
731
stop=get_timer(start);
734
if(tm.tm_sec==newtm.tm_sec) {
735
s=getenv("defaultdate");
737
mk_date ("010112001970", &newtm);
739
if(mk_date (s, &newtm)!=0) {
740
printf("RTC: Bad date format in defaultdate\n");
749
/***************************************************************************
750
* some helping routines
753
int overwrite_console (void)
755
/* return true if console should be overwritten */
756
return ((in8(PLD_EXT_CONF_REG) & 0x1) == 0);
760
/************************************************************************
762
************************************************************************/
763
void print_mip405_info (void)
765
unsigned char part, vers, cfg, irq_reg, com_mode, ext;
767
part = in8 (PLD_PART_REG);
768
vers = in8 (PLD_VERS_REG);
769
cfg = in8 (PLD_BOARD_CFG_REG);
770
irq_reg = in8 (PLD_IRQ_REG);
771
com_mode = in8 (PLD_COM_MODE_REG);
772
ext = in8 (PLD_EXT_CONF_REG);
774
printf ("PLD Part %d version %d\n", part & 0x7F, vers);
775
printf ("Board Revision %c\n", ((cfg >> 4) & 0xf) + 'A');
776
printf ("Population Options %d %d %d %d\n", (cfg) & 0x1,
777
(cfg >> 1) & 0x1, (cfg >> 2) & 0x1, (cfg >> 3) & 0x1);
778
printf ("User LED %s\n", (com_mode & 0x4) ? "on" : "off");
779
printf ("UART Clocks %d\n", (com_mode >> 4) & 0x3);
780
#if !defined(CONFIG_MIP405T)
781
printf ("User Config Switch %d %d %d %d %d %d %d %d\n",
782
(ext) & 0x1, (ext >> 1) & 0x1, (ext >> 2) & 0x1,
783
(ext >> 3) & 0x1, (ext >> 4) & 0x1, (ext >> 5) & 0x1,
784
(ext >> 6) & 0x1, (ext >> 7) & 0x1);
785
printf ("SER1 uses handshakes %s\n",
786
(ext & 0x80) ? "DTR/DSR" : "RTS/CTS");
788
printf ("User Config Switch %d %d %d %d %d %d %d %d\n",
789
(ext) & 0x1, (ext >> 1) & 0x1, (ext >> 2) & 0x1,
790
(ext >> 3) & 0x1, (ext >> 4) & 0x1, (ext >> 5) & 0x1,
791
(ext >> 6) & 0x1,(ext >> 7) & 0x1);
793
printf ("IDE Reset %s\n", (ext & 0x01) ? "asserted" : "not asserted");
795
printf (" PIIX INTR: %s\n", (irq_reg & 0x80) ? "inactive" : "active");
796
#if !defined(CONFIG_MIP405T)
797
printf (" UART0 IRQ: %s\n", (irq_reg & 0x40) ? "inactive" : "active");
798
printf (" UART1 IRQ: %s\n", (irq_reg & 0x20) ? "inactive" : "active");
800
printf (" PIIX SMI: %s\n", (irq_reg & 0x10) ? "inactive" : "active");
801
printf (" PIIX INIT: %s\n", (irq_reg & 0x8) ? "inactive" : "active");
802
printf (" PIIX NMI: %s\n", (irq_reg & 0x4) ? "inactive" : "active");