2 * Copyright (C) 2004 PaulReynolds@lhsolutions.com
5 * Stefan Roese, DENX Software Engineering, sr@denx.de.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <asm/processor.h>
30 #include <spd_sdram.h>
31 #include <asm/ppc4xx-emac.h>
33 DECLARE_GLOBAL_DATA_PTR
;
35 #define BOOT_SMALL_FLASH 32 /* 00100000 */
36 #define FLASH_ONBD_N 2 /* 00000010 */
37 #define FLASH_SRAM_SEL 1 /* 00000001 */
39 long int fixed_sdram (void);
40 void fpga_init (void);
42 int board_early_init_f (void)
45 unsigned char *fpga_base
= (unsigned char *) CONFIG_SYS_FPGA_BASE
;
46 unsigned char switch_status
;
47 unsigned long cs0_base
;
48 unsigned long cs0_size
;
49 unsigned long cs0_twt
;
50 unsigned long cs2_base
;
51 unsigned long cs2_size
;
52 unsigned long cs2_twt
;
54 /*-------------------------------------------------------------------------+
55 | Initialize EBC CONFIG
56 +-------------------------------------------------------------------------*/
57 mtebc(EBC0_CFG
, EBC_CFG_LE_UNLOCK
|
58 EBC_CFG_PTD_ENABLE
| EBC_CFG_RTC_64PERCLK
|
59 EBC_CFG_ATC_PREVIOUS
| EBC_CFG_DTC_PREVIOUS
|
60 EBC_CFG_CTC_PREVIOUS
| EBC_CFG_EMC_NONDEFAULT
|
61 EBC_CFG_PME_DISABLE
| EBC_CFG_PR_32
);
63 /*-------------------------------------------------------------------------+
64 | FPGA. Initialize bank 7 with default values.
65 +-------------------------------------------------------------------------*/
66 mtebc(PB7AP
, EBC_BXAP_BME_DISABLED
|EBC_BXAP_TWT_ENCODE(7)|
68 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
69 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
70 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED
|
71 EBC_BXAP_BEM_WRITEONLY
|
72 EBC_BXAP_PEN_DISABLED
);
73 mtebc(PB7CR
, EBC_BXCR_BAS_ENCODE(0x48300000)|
74 EBC_BXCR_BS_1MB
|EBC_BXCR_BU_RW
|EBC_BXCR_BW_8BIT
);
76 /* read FPGA base register FPGA_REG0 */
77 switch_status
= *fpga_base
;
79 if (switch_status
& 0x40) {
80 cs0_base
= 0xFFE00000;
81 cs0_size
= EBC_BXCR_BS_2MB
;
83 cs2_base
= 0xFF800000;
84 cs2_size
= EBC_BXCR_BS_4MB
;
87 cs0_base
= 0xFFC00000;
88 cs0_size
= EBC_BXCR_BS_4MB
;
90 cs2_base
= 0xFF800000;
91 cs2_size
= EBC_BXCR_BS_2MB
;
95 /*-------------------------------------------------------------------------+
96 | 1 MB FLASH / 1 MB SRAM. Initialize bank 0 with default values.
97 +-------------------------------------------------------------------------*/
98 mtebc(PB0AP
, EBC_BXAP_BME_DISABLED
|EBC_BXAP_TWT_ENCODE(cs0_twt
)|
100 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
101 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
102 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED
|
103 EBC_BXAP_BEM_WRITEONLY
|
104 EBC_BXAP_PEN_DISABLED
);
105 mtebc(PB0CR
, EBC_BXCR_BAS_ENCODE(cs0_base
)|
106 cs0_size
|EBC_BXCR_BU_RW
|EBC_BXCR_BW_8BIT
);
108 /*-------------------------------------------------------------------------+
109 | 8KB NVRAM/RTC. Initialize bank 1 with default values.
110 +-------------------------------------------------------------------------*/
111 mtebc(PB1AP
, EBC_BXAP_BME_DISABLED
|EBC_BXAP_TWT_ENCODE(10)|
112 EBC_BXAP_BCE_DISABLE
|
113 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
114 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
115 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED
|
116 EBC_BXAP_BEM_WRITEONLY
|
117 EBC_BXAP_PEN_DISABLED
);
118 mtebc(PB1CR
, EBC_BXCR_BAS_ENCODE(0x48000000)|
119 EBC_BXCR_BS_1MB
|EBC_BXCR_BU_RW
|EBC_BXCR_BW_8BIT
);
121 /*-------------------------------------------------------------------------+
122 | 4 MB FLASH. Initialize bank 2 with default values.
123 +-------------------------------------------------------------------------*/
124 mtebc(PB2AP
, EBC_BXAP_BME_DISABLED
|EBC_BXAP_TWT_ENCODE(cs2_twt
)|
125 EBC_BXAP_BCE_DISABLE
|
126 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
127 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
128 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED
|
129 EBC_BXAP_BEM_WRITEONLY
|
130 EBC_BXAP_PEN_DISABLED
);
131 mtebc(PB2CR
, EBC_BXCR_BAS_ENCODE(cs2_base
)|
132 cs2_size
|EBC_BXCR_BU_RW
|EBC_BXCR_BW_8BIT
);
134 /*-------------------------------------------------------------------------+
135 | FPGA. Initialize bank 7 with default values.
136 +-------------------------------------------------------------------------*/
137 mtebc(PB7AP
, EBC_BXAP_BME_DISABLED
|EBC_BXAP_TWT_ENCODE(7)|
138 EBC_BXAP_BCE_DISABLE
|
139 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
140 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
141 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED
|
142 EBC_BXAP_BEM_WRITEONLY
|
143 EBC_BXAP_PEN_DISABLED
);
144 mtebc(PB7CR
, EBC_BXCR_BAS_ENCODE(0x48300000)|
145 EBC_BXCR_BS_1MB
|EBC_BXCR_BU_RW
|EBC_BXCR_BW_8BIT
);
147 /*--------------------------------------------------------------------
148 * Setup the interrupt controller polarities, triggers, etc.
149 *-------------------------------------------------------------------*/
151 * Because of the interrupt handling rework to handle 440GX interrupts
152 * with the common code, we needed to change names of the UIC registers.
153 * Here the new relationship:
155 * U-Boot name 440GX name
156 * -----------------------
162 mtdcr (UIC1SR
, 0xffffffff); /* clear all */
163 mtdcr (UIC1ER
, 0x00000000); /* disable all */
164 mtdcr (UIC1CR
, 0x00000009); /* SMI & UIC1 crit are critical */
165 mtdcr (UIC1PR
, 0xfffffe13); /* per ref-board manual */
166 mtdcr (UIC1TR
, 0x01c00008); /* per ref-board manual */
167 mtdcr (UIC1VR
, 0x00000001); /* int31 highest, base=0x000 */
168 mtdcr (UIC1SR
, 0xffffffff); /* clear all */
170 mtdcr (UIC2SR
, 0xffffffff); /* clear all */
171 mtdcr (UIC2ER
, 0x00000000); /* disable all */
172 mtdcr (UIC2CR
, 0x00000000); /* all non-critical */
173 mtdcr (UIC2PR
, 0xffffe0ff); /* per ref-board manual */
174 mtdcr (UIC2TR
, 0x00ffc000); /* per ref-board manual */
175 mtdcr (UIC2VR
, 0x00000001); /* int31 highest, base=0x000 */
176 mtdcr (UIC2SR
, 0xffffffff); /* clear all */
178 mtdcr (UIC3SR
, 0xffffffff); /* clear all */
179 mtdcr (UIC3ER
, 0x00000000); /* disable all */
180 mtdcr (UIC3CR
, 0x00000000); /* all non-critical */
181 mtdcr (UIC3PR
, 0xffffffff); /* per ref-board manual */
182 mtdcr (UIC3TR
, 0x00ff8c0f); /* per ref-board manual */
183 mtdcr (UIC3VR
, 0x00000001); /* int31 highest, base=0x000 */
184 mtdcr (UIC3SR
, 0xffffffff); /* clear all */
186 mtdcr (UIC0SR
, 0xfc000000); /* clear all */
187 mtdcr (UIC0ER
, 0x00000000); /* disable all */
188 mtdcr (UIC0CR
, 0x00000000); /* all non-critical */
189 mtdcr (UIC0PR
, 0xfc000000); /* */
190 mtdcr (UIC0TR
, 0x00000000); /* */
191 mtdcr (UIC0VR
, 0x00000001); /* */
192 mfsdr (SDR0_MFR
, mfr
);
193 mfr
&= ~SDR0_MFR_ECS_MASK
;
194 /* mtsdr(SDR0_MFR, mfr); */
201 int checkboard (void)
204 int i
= getenv_f("serial#", buf
, sizeof(buf
));
206 printf ("Board: Ocotea - AMCC PPC440GX Evaluation Board");
217 phys_size_t
initdram (int board_type
)
221 #if defined(CONFIG_SPD_EEPROM)
222 dram_size
= spd_sdram ();
224 dram_size
= fixed_sdram ();
230 #if !defined(CONFIG_SPD_EEPROM)
231 /*************************************************************************
232 * fixed sdram init -- doesn't use serial presence detect.
234 * Assumes: 128 MB, non-ECC, non-registered
237 ************************************************************************/
238 long int fixed_sdram (void)
242 /*--------------------------------------------------------------------
244 *------------------------------------------------------------------*/
245 mtsdram (SDRAM0_UABBA
, 0x00000000); /* ubba=0 (default) */
246 mtsdram (SDRAM0_SLIO
, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
247 mtsdram (SDRAM0_DEVOPT
, 0x00000000); /* dll=0 ds=0 (normal) */
248 mtsdram (SDRAM0_WDDCTR
, 0x00000000); /* wrcp=0 dcd=0 */
249 mtsdram (SDRAM0_CLKTR
, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */
251 /*--------------------------------------------------------------------
252 * Setup for board-specific specific mem
253 *------------------------------------------------------------------*/
255 * Following for CAS Latency = 2.5 @ 133 MHz PLB
257 mtsdram (SDRAM0_B0CR
, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
258 mtsdram (SDRAM0_TR0
, 0x410a4012); /* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
260 mtsdram (SDRAM0_TR1
, 0x8080082f); /* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
261 mtsdram (SDRAM0_RTR
, 0x08200000); /* Rate 15.625 ns @ 133 MHz PLB */
262 mtsdram (SDRAM0_CFG1
, 0x00000000); /* Self-refresh exit, disable PM */
263 udelay (400); /* Delay 200 usecs (min) */
265 /*--------------------------------------------------------------------
266 * Enable the controller, then wait for DCEN to complete
267 *------------------------------------------------------------------*/
268 mtsdram (SDRAM0_CFG0
, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
270 mfsdram (SDRAM0_MCSTS
, reg
);
271 if (reg
& 0x80000000)
275 return (128 * 1024 * 1024); /* 128 MB */
277 #endif /* !defined(CONFIG_SPD_EEPROM) */
282 unsigned long sdr0_pfc0
;
283 unsigned long sdr0_pfc1
;
284 unsigned long sdr0_cust0
;
287 mfsdr (SDR0_PFC0
, sdr0_pfc0
);
288 mfsdr (SDR0_PFC1
, sdr0_pfc1
);
289 group
= SDR0_PFC1_EPS_DECODE(sdr0_pfc1
);
292 sdr0_pfc0
= (sdr0_pfc0
& ~SDR0_PFC0_GEIE_MASK
) | SDR0_PFC0_GEIE_TRE
;
293 if ( ((pvr
== PVR_440GX_RA
) || (pvr
== PVR_440GX_RB
)) && ((group
== 4) || (group
== 5))) {
294 sdr0_pfc0
= (sdr0_pfc0
& ~SDR0_PFC0_TRE_MASK
) | SDR0_PFC0_TRE_DISABLE
;
295 sdr0_pfc1
= (sdr0_pfc1
& ~SDR0_PFC1_CTEMS_MASK
) | SDR0_PFC1_CTEMS_EMS
;
296 out8(FPGA_REG2
, (in8(FPGA_REG2
) & ~FPGA_REG2_EXT_INTFACE_MASK
) |
297 FPGA_REG2_EXT_INTFACE_ENABLE
);
298 mtsdr (SDR0_PFC0
, sdr0_pfc0
);
299 mtsdr (SDR0_PFC1
, sdr0_pfc1
);
301 sdr0_pfc0
= (sdr0_pfc0
& ~SDR0_PFC0_TRE_MASK
) | SDR0_PFC0_TRE_ENABLE
;
308 out8(FPGA_REG2
, (in8(FPGA_REG2
) & ~FPGA_REG2_EXT_INTFACE_MASK
) |
309 FPGA_REG2_EXT_INTFACE_ENABLE
);
310 sdr0_pfc1
= (sdr0_pfc1
& ~SDR0_PFC1_CTEMS_MASK
) | SDR0_PFC1_CTEMS_EMS
;
311 mtsdr (SDR0_PFC0
, sdr0_pfc0
);
312 mtsdr (SDR0_PFC1
, sdr0_pfc1
);
318 /* CPU trace B - Over EBMI */
319 sdr0_pfc1
= (sdr0_pfc1
& ~SDR0_PFC1_CTEMS_MASK
) | SDR0_PFC1_CTEMS_CPUTRACE
;
320 mtsdr (SDR0_PFC0
, sdr0_pfc0
);
321 mtsdr (SDR0_PFC1
, sdr0_pfc1
);
322 out8(FPGA_REG2
, (in8(FPGA_REG2
) & ~FPGA_REG2_EXT_INTFACE_MASK
) |
323 FPGA_REG2_EXT_INTFACE_DISABLE
);
328 /* Initialize the ethernet specific functions in the fpga */
329 mfsdr(SDR0_PFC1
, sdr0_pfc1
);
330 mfsdr(SDR0_CUST0
, sdr0_cust0
);
331 if ( (SDR0_PFC1_EPS_DECODE(sdr0_pfc1
) == 4) &&
332 ((SDR0_CUST0_RGMII2_DECODE(sdr0_cust0
) == RGMII_FER_GMII
) ||
333 (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0
) == RGMII_FER_TBI
)))
335 if ((in8(FPGA_REG0
) & FPGA_REG0_ECLS_MASK
) == FPGA_REG0_ECLS_VER1
)
337 out8(FPGA_REG3
, (in8(FPGA_REG3
) & ~FPGA_REG3_ENET_MASK1
) |
338 FPGA_REG3_ENET_GROUP7
);
342 if (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0
) == RGMII_FER_GMII
)
344 out8(FPGA_REG3
, (in8(FPGA_REG3
) & ~FPGA_REG3_ENET_MASK2
) |
345 FPGA_REG3_ENET_GROUP7
);
349 out8(FPGA_REG3
, (in8(FPGA_REG3
) & ~FPGA_REG3_ENET_MASK2
) |
350 FPGA_REG3_ENET_GROUP8
);
356 if ((in8(FPGA_REG0
) & FPGA_REG0_ECLS_MASK
) == FPGA_REG0_ECLS_VER1
)
358 out8(FPGA_REG3
, (in8(FPGA_REG3
) & ~FPGA_REG3_ENET_MASK1
) |
359 FPGA_REG3_ENET_ENCODE1(SDR0_PFC1_EPS_DECODE(sdr0_pfc1
)));
363 out8(FPGA_REG3
, (in8(FPGA_REG3
) & ~FPGA_REG3_ENET_MASK2
) |
364 FPGA_REG3_ENET_ENCODE2(SDR0_PFC1_EPS_DECODE(sdr0_pfc1
)));
367 out8(FPGA_REG4
, FPGA_REG4_GPHY_MODE10
|
368 FPGA_REG4_GPHY_MODE100
| FPGA_REG4_GPHY_MODE1000
|
369 FPGA_REG4_GPHY_FRC_DPLX
| FPGA_REG4_CONNECT_PHYS
);
371 /* reset the gigabyte phy if necessary */
372 if (SDR0_PFC1_EPS_DECODE(sdr0_pfc1
) >= 3)
374 if ((in8(FPGA_REG0
) & FPGA_REG0_ECLS_MASK
) == FPGA_REG0_ECLS_VER1
)
376 out8(FPGA_REG3
, in8(FPGA_REG3
) & ~FPGA_REG3_GIGABIT_RESET_DISABLE
);
378 out8(FPGA_REG3
, in8(FPGA_REG3
) | FPGA_REG3_GIGABIT_RESET_DISABLE
);
382 out8(FPGA_REG2
, in8(FPGA_REG2
) & ~FPGA_REG2_GIGABIT_RESET_DISABLE
);
384 out8(FPGA_REG2
, in8(FPGA_REG2
) | FPGA_REG2_GIGABIT_RESET_DISABLE
);
389 * new Ocotea with Rev. F (pass 3) chips has SMII PHY reset
391 if ((in8(FPGA_REG0
) & FPGA_REG0_ECLS_MASK
) == FPGA_REG0_ECLS_VER2
) {
392 out8(FPGA_REG2
, in8(FPGA_REG2
) & ~FPGA_REG2_SMII_RESET_DISABLE
);
394 out8(FPGA_REG2
, in8(FPGA_REG2
) | FPGA_REG2_SMII_RESET_DISABLE
);
397 /* Turn off the LED's */
398 out8(FPGA_REG3
, (in8(FPGA_REG3
) & ~FPGA_REG3_STAT_MASK
) |
399 FPGA_REG3_STAT_LED8_DISAB
| FPGA_REG3_STAT_LED4_DISAB
|
400 FPGA_REG3_STAT_LED2_DISAB
| FPGA_REG3_STAT_LED1_DISAB
);