3 * Stäubli Faverges - <www.staubli.com>
4 * Pierre AUBERT p.aubert@staubli.com
5 * U-Boot port on RPXClassic LF (CLLF_BW31) board
8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 /* ------------------------------------------------------------------------- */
36 static long int dram_size (long int, long int *, long int);
37 static unsigned char aschex_to_byte (unsigned char *cp
);
39 /* ------------------------------------------------------------------------- */
41 #define _NOT_USED_ 0xFFFFCC25
43 const uint sdram_table
[] =
46 * Single Read. (Offset 00h in UPMA RAM)
48 0xCFFFCC24, 0x0FFFCC04, 0X0CAFCC04, 0X03AFCC08,
49 0x3FBFCC27, /* last */
50 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
53 * Burst Read. (Offset 08h in UPMA RAM)
55 0xCFFFCC24, 0x0FFFCC04, 0x0CAFCC84, 0x03AFCC88,
56 0x3FBFCC27, /* last */
57 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
58 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
59 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
62 * Single Write. (Offset 18h in UPMA RAM)
64 0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC04, 0x03FFCC00,
65 0x3FFFCC27, /* last */
66 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
69 * Burst Write. (Offset 20h in UPMA RAM)
71 0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC80, 0x03FFCC8C,
72 0x0CFFCC00, 0x33FFCC27, /* last */
73 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
74 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
75 _NOT_USED_
, _NOT_USED_
,
78 * Refresh. (Offset 30h in UPMA RAM)
80 0xC0FFCC24, 0x03FFCC24, 0x0FFFCC24, 0x0FFFCC24,
81 0x3FFFCC27, /* last */
82 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
83 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
,
86 * Exception. (Offset 3Ch in UPMA RAM)
88 _NOT_USED_
, _NOT_USED_
, _NOT_USED_
, _NOT_USED_
91 /* ------------------------------------------------------------------------- */
95 * Check Board Identity:
100 puts ("Board: RPXClassic\n");
104 /*-----------------------------------------------------------------------------
105 * board_get_enetaddr -- Read the MAC Address in the I2C EEPROM
106 *-----------------------------------------------------------------------------
108 void board_get_enetaddr (uchar
* enet
)
114 i2c_init (CFG_I2C_SPEED
, CFG_I2C_SLAVE
);
116 /* Read 256 bytes in EEPROM */
117 i2c_read (0x54, 0, 1, (uchar
*)buff
, 128);
118 i2c_read (0x54, 128, 1, (uchar
*)buff
+ 128, 128);
120 /* Retrieve MAC address in buffer (key EA) */
122 if (cp
[0] == 'E' && cp
[1] == 'A') {
124 /* Read MAC address */
125 for (i
= 0; i
< 6; i
++, cp
+= 2) {
126 enet
[i
] = aschex_to_byte ((unsigned char *)cp
);
129 /* Scan to the end of the record */
130 while ((*cp
!= '\n') && (*cp
!= (char)0xff)) {
133 /* If the next character is a \n, 0 or ff, we are done. */
135 if ((*cp
== '\n') || (*cp
== 0) || (*cp
== (char)0xff))
139 #ifdef CONFIG_FEC_ENET
140 /* The MAC address is the same as normal ethernet except the 3rd byte */
141 /* (See the E.P. Planet Core Overview manual */
145 printf ("MAC address = %02x:%02x:%02x:%02x:%02x:%02x\n",
146 enet
[0], enet
[1], enet
[2], enet
[3], enet
[4], enet
[5]);
150 void rpxclassic_init (void)
153 *((uchar
*) BCSR0
) |= BCSR0_ENNVRAM
;
155 #ifdef CONFIG_FEC_ENET
157 /* Validate the fast ethernet tranceiver */
158 *((volatile uchar
*) BCSR2
) &= ~BCSR2_MIICTL
;
159 *((volatile uchar
*) BCSR2
) &= ~BCSR2_MIIPWRDWN
;
160 *((volatile uchar
*) BCSR2
) |= BCSR2_MIIRST
;
161 *((volatile uchar
*) BCSR2
) |= BCSR2_MIIPWRDWN
;
166 /* ------------------------------------------------------------------------- */
168 long int initdram (int board_type
)
170 volatile immap_t
*immap
= (immap_t
*) CFG_IMMR
;
171 volatile memctl8xx_t
*memctl
= &immap
->im_memctl
;
174 upmconfig (UPMA
, (uint
*) sdram_table
,
175 sizeof (sdram_table
) / sizeof (uint
));
177 /* Refresh clock prescalar */
178 memctl
->memc_mptpr
= CFG_MPTPR
;
180 memctl
->memc_mar
= 0x00000000;
182 /* Map controller banks 1 to the SDRAM bank */
183 memctl
->memc_or1
= CFG_OR1_PRELIM
;
184 memctl
->memc_br1
= CFG_BR1_PRELIM
;
186 memctl
->memc_mamr
= CFG_MAMR_10COL
& (~(MAMR_PTAE
)); /* no refresh yet */
190 /* perform SDRAM initializsation sequence */
192 memctl
->memc_mcr
= 0x80002230; /* SDRAM bank 0 - refresh twice */
195 memctl
->memc_mamr
|= MAMR_PTAE
; /* enable refresh */
199 /* Check Bank 0 Memory Size
203 size10
= dram_size (CFG_MAMR_10COL
, SDRAM_BASE_PRELIM
,
209 /* ------------------------------------------------------------------------- */
212 * Check memory range for valid RAM. A simple memory test determines
213 * the actually available RAM size between addresses `base' and
214 * `base + maxsize'. Some (not all) hardware errors are detected:
215 * - short between address lines
216 * - short between data lines
219 static long int dram_size (long int mamr_value
, long int *base
, long int maxsize
)
221 volatile immap_t
*immap
= (immap_t
*) CFG_IMMR
;
222 volatile memctl8xx_t
*memctl
= &immap
->im_memctl
;
224 memctl
->memc_mamr
= mamr_value
;
226 return (get_ram_size(base
, maxsize
));
228 /*-----------------------------------------------------------------------------
230 *-----------------------------------------------------------------------------
232 static unsigned char aschex_to_byte (unsigned char *cp
)
238 if ((c
>= 'A') && (c
<= 'F')) {
241 } else if ((c
>= 'a') && (c
<= 'f')) {
252 if ((c
>= 'A') && (c
<= 'F')) {
255 } else if ((c
>= 'a') && (c
<= 'f')) {