3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 * Ulrich Lutz, Speech Design GmbH, ulutz@datalab.de.
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 /* ------------------------------------------------------------------------- */
31 static long int dram_size (long int, long int *, long int);
33 /* ------------------------------------------------------------------------- */
35 #define _NOT_USED_ 0xFFFFFFFF
37 const uint sharc_table[] = {
39 * Single Read. (Offset 0 in UPM RAM)
41 0x0FF3FC04, 0x0FF3EC00, 0x7FFFEC04, 0xFFFFEC04,
42 0xFFFFEC05, /* last */
43 _NOT_USED_, _NOT_USED_, _NOT_USED_,
45 * Burst Read. (Offset 8 in UPM RAM)
48 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
49 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
50 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
51 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
53 * Single Write. (Offset 18 in UPM RAM)
55 0x0FAFFC04, 0x0FAFEC00, 0x7FFFEC04, 0xFFFFEC04,
56 0xFFFFEC05, /* last */
57 _NOT_USED_, _NOT_USED_, _NOT_USED_,
59 * Burst Write. (Offset 20 in UPM RAM)
62 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
63 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
64 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
65 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
67 * Refresh (Offset 30 in UPM RAM)
70 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
71 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
72 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
74 * Exception. (Offset 3c in UPM RAM)
76 0x7FFFFC07, /* last */
77 _NOT_USED_, _NOT_USED_, _NOT_USED_,
81 const uint sdram_table[] = {
83 * Single Read. (Offset 0 in UPM RAM)
85 0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00,
86 0x1FF77C47, /* last */
88 * SDRAM Initialization (offset 5 in UPM RAM)
90 * This is no UPM entry point. The following definition uses
91 * the remaining space to establish an initialization
92 * sequence, which is executed by a RUN command.
95 0x1FF77C35, 0xEFEABC34, 0x1FB57C35, /* last */
97 * Burst Read. (Offset 8 in UPM RAM)
99 0x1F07FC04, 0xEEAEFC04, 0x10ADFC04, 0xF0AFFC00,
100 0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C47, /* last */
101 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
102 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
104 * Single Write. (Offset 18 in UPM RAM)
106 0x1F27FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */
107 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
109 * Burst Write. (Offset 20 in UPM RAM)
111 0x1F07FC04, 0xEEAEBC00, 0x10AD7C00, 0xF0AFFC00,
112 0xF0AFFC00, 0xE1BBBC04, 0x1FF77C47, /* last */
114 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
115 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
117 * Refresh (Offset 30 in UPM RAM)
119 0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
120 0xFFFFFC84, 0xFFFFFC07, /* last */
121 _NOT_USED_, _NOT_USED_,
122 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
124 * Exception. (Offset 3c in UPM RAM)
126 0x7FFFFC07, /* last */
127 _NOT_USED_, _NOT_USED_, _NOT_USED_,
130 /* ------------------------------------------------------------------------- */
134 * Check Board Identity:
138 int checkboard (void)
140 puts ("Board: SPD823TS\n");
144 /* ------------------------------------------------------------------------- */
146 long int initdram (int board_type)
148 volatile immap_t *immap = (immap_t *) CFG_IMMR;
149 volatile memctl8xx_t *memctl = &immap->im_memctl;
154 * Map controller bank 2 to the SRAM bank at preliminary address.
156 memctl->memc_or2 = CFG_OR2;
157 memctl->memc_br2 = CFG_BR2;
161 * Map controller bank 4 to the PER8 bank.
163 memctl->memc_or4 = CFG_OR4;
164 memctl->memc_br4 = CFG_BR4;
167 /* Configure SHARC at UMA */
168 upmconfig (UPMA, (uint *) sharc_table,
169 sizeof (sharc_table) / sizeof (uint));
170 /* Map controller bank 5 to the SHARC */
171 memctl->memc_or5 = CFG_OR5;
172 memctl->memc_br5 = CFG_BR5;
175 memctl->memc_mamr = 0x00001000;
177 /* Configure SDRAM at UMB */
178 upmconfig (UPMB, (uint *) sdram_table,
179 sizeof (sdram_table) / sizeof (uint));
181 memctl->memc_mptpr = CFG_MPTPR_1BK_8K;
183 memctl->memc_mar = 0x00000088;
186 * Map controller bank 3 to the SDRAM bank at preliminary address.
188 memctl->memc_or3 = CFG_OR3_PRELIM;
189 memctl->memc_br3 = CFG_BR3_PRELIM;
191 memctl->memc_mbmr = CFG_MBMR_8COL; /* refresh not enabled yet */
194 memctl->memc_mcr = 0x80806105;
196 memctl->memc_mcr = 0x80806130;
198 memctl->memc_mcr = 0x80806130;
200 memctl->memc_mcr = 0x80806106;
202 memctl->memc_mbmr |= MBMR_PTBE; /* refresh enabled */
205 * Check Bank 0 Memory Size for re-configuration
208 dram_size (CFG_MBMR_8COL, SDRAM_BASE3_PRELIM,
211 memctl->memc_mbmr = CFG_MBMR_8COL | MBMR_PTBE;
216 /* ------------------------------------------------------------------------- */
219 * Check memory range for valid RAM. A simple memory test determines
220 * the actually available RAM size between addresses `base' and
221 * `base + maxsize'. Some (not all) hardware errors are detected:
222 * - short between address lines
223 * - short between data lines
226 static long int dram_size (long int mamr_value, long int *base,
229 volatile immap_t *immap = (immap_t *) CFG_IMMR;
230 volatile memctl8xx_t *memctl = &immap->im_memctl;
232 memctl->memc_mbmr = mamr_value;
234 return (get_ram_size (base, maxsize));
237 /* ------------------------------------------------------------------------- */
239 void reset_phy (void)
241 immap_t *immr = (immap_t *) CFG_IMMR;
244 /* Configure extra port pins for NS DP83843 PHY */
245 immr->im_ioport.iop_papar &= ~(PA_ENET_MDC | PA_ENET_MDIO);
247 sreg = immr->im_ioport.iop_padir;
248 sreg |= PA_ENET_MDC; /* Mgmt. Data Clock is Output */
249 sreg &= ~(PA_ENET_MDIO); /* Mgmt. Data I/O is bidirect. => Input */
250 immr->im_ioport.iop_padir = sreg;
252 immr->im_ioport.iop_padat &= ~(PA_ENET_MDC); /* set MDC = 0 */
255 * RESET in implemented by a positive pulse of at least 1 us
258 * Configure RESET pins for NS DP83843 PHY, and RESET chip.
260 * Note: The RESET pin is high active, but there is an
261 * inverter on the SPD823TS board...
263 immr->im_ioport.iop_pcpar &= ~(PC_ENET_RESET);
264 immr->im_ioport.iop_pcdir |= PC_ENET_RESET;
265 /* assert RESET signal of PHY */
266 immr->im_ioport.iop_pcdat &= ~(PC_ENET_RESET);
268 /* de-assert RESET signal of PHY */
269 immr->im_ioport.iop_pcdat |= PC_ENET_RESET;
273 /* ------------------------------------------------------------------------- */
275 void ide_set_reset (int on)
277 volatile immap_t *immr = (immap_t *) CFG_IMMR;
280 * Configure PC for IDE Reset Pin
282 if (on) { /* assert RESET */
283 immr->im_ioport.iop_pcdat &= ~(CFG_PC_IDE_RESET);
284 } else { /* release RESET */
285 immr->im_ioport.iop_pcdat |= CFG_PC_IDE_RESET;
288 /* program port pin as GPIO output */
289 immr->im_ioport.iop_pcpar &= ~(CFG_PC_IDE_RESET);
290 immr->im_ioport.iop_pcso &= ~(CFG_PC_IDE_RESET);
291 immr->im_ioport.iop_pcdir |= CFG_PC_IDE_RESET;
294 /* ------------------------------------------------------------------------- */