3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #include <linux/mtd/doc2000.h>
28 extern int kbd_init(void);
29 extern int drv_kbd_init(void);
31 /* ------------------------------------------------------------------------- */
33 static long int dram_size (long int, long int *, long int);
35 /* ------------------------------------------------------------------------- */
37 #define _NOT_USED_ 0xFFFFFFFF
39 const uint sdram_table[] =
42 * Single Read. (Offset 0 in UPMA RAM)
44 0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00,
45 0x1FF77C47, /* last */
47 * SDRAM Initialization (offset 5 in UPMA RAM)
49 * This is no UPM entry point. The following definition uses
50 * the remaining space to establish an initialization
51 * sequence, which is executed by a RUN command.
54 0x1FF77C34, 0xEFEABC34, 0x1FB57C35, /* last */
56 * Burst Read. (Offset 8 in UPMA RAM)
58 0x1F07FC04, 0xEEAEFC04, 0x10ADFC04, 0xF0AFFC00,
59 0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C47, /* last */
60 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
61 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
63 * Single Write. (Offset 18 in UPMA RAM)
65 0x1F27FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */
66 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
68 * Burst Write. (Offset 20 in UPMA RAM)
70 0x1F07FC04, 0xEEAEBC00, 0x10AD7C00, 0xF0AFFC00,
71 0xF0AFFC00, 0xE1BBBC04, 0x1FF77C47, /* last */
73 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
74 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
76 * Refresh (Offset 30 in UPMA RAM)
78 0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
79 0xFFFFFC84, 0xFFFFFC07, /* last */
80 _NOT_USED_, _NOT_USED_,
81 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
83 * Exception. (Offset 3c in UPMA RAM)
85 0x1FF7FC07, /* last */
86 _NOT_USED_, _NOT_USED_, _NOT_USED_,
89 const uint static_table[] =
92 * Single Read. (Offset 0 in UPMA RAM)
94 0x0FFFFC04, 0x0FF3FC04, 0x0FF3CC04, 0x0FF3CC04,
95 0x0FF3EC04, 0x0FF3CC00, 0x0FF7FC04, 0x3FFFFC04,
96 0xFFFFFC04, 0xFFFFFC05, /* last */
97 _NOT_USED_, _NOT_USED_,
98 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
99 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
100 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
102 * Single Write. (Offset 18 in UPMA RAM)
104 0x0FFFFC04, 0x00FFFC04, 0x00FFFC04, 0x00FFFC04,
105 0x01FFFC00, 0x3FFFFC04, 0xFFFFFC04, 0xFFFFFC05, /* last */
106 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
107 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
108 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
109 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
110 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
111 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
112 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
113 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
116 /* ------------------------------------------------------------------------- */
119 * Check Board Identity:
121 * Test TQ ID string (TQM8xx...)
122 * If present, check for "L" type (no second DRAM bank),
123 * otherwise "L" type is assumed as default.
125 * Return 1 for "L" type, 0 else.
128 int checkboard (void)
130 char *s = getenv ("serial#");
132 if (!s || strncmp (s, "TQM8", 4)) {
133 printf ("### No HW ID - assuming RBC823\n");
143 /* ------------------------------------------------------------------------- */
145 phys_size_t initdram (int board_type)
147 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
148 volatile memctl8xx_t *memctl = &immap->im_memctl;
149 long int size_b0, size8, size9;
151 upmconfig (UPMA, (uint *) sdram_table,
152 sizeof (sdram_table) / sizeof (uint));
155 * 1 Bank of 64Mbit x 2 devices
157 memctl->memc_mptpr = CONFIG_SYS_MPTPR_1BK_4K;
158 memctl->memc_mar = 0x00000088;
161 * Map controller SDRAM bank 0
163 memctl->memc_or4 = CONFIG_SYS_OR4_PRELIM;
164 memctl->memc_br4 = CONFIG_SYS_BR4_PRELIM;
165 memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */
169 * Perform SDRAM initializsation sequence
171 memctl->memc_mcr = 0x80008105; /* SDRAM bank 0 */
173 memctl->memc_mamr = (CONFIG_SYS_MAMR_8COL & ~(MAMR_TLFA_MSK)) | MAMR_TLFA_8X;
175 memctl->memc_mcr = 0x80008130; /* SDRAM bank 0 - execute twice */
177 memctl->memc_mamr = (CONFIG_SYS_MAMR_8COL & ~(MAMR_TLFA_MSK)) | MAMR_TLFA_4X;
180 memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
184 * Preliminary prescaler for refresh (depends on number of
185 * banks): This value is selected for four cycles every 62.4 us
186 * with two SDRAM banks or four cycles every 31.2 us with one
187 * bank. It will be adjusted after memory sizing.
189 memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K; /* 16: but should be: CONFIG_SYS_MPTPR_1BK_4K */
192 * Check Bank 0 Memory Size for re-configuration
196 size8 = dram_size (CONFIG_SYS_MAMR_8COL, (long *) SDRAM_BASE4_PRELIM,
203 size9 = dram_size (CONFIG_SYS_MAMR_9COL, (long *) SDRAM_BASE4_PRELIM,
206 if (size8 < size9) { /* leave configuration at 9 columns */
208 /* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */
209 } else { /* back to 8 columns */
211 memctl->memc_mamr = CONFIG_SYS_MAMR_8COL;
213 /* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */
219 * Adjust refresh rate depending on SDRAM type, both banks
220 * For types > 128 MBit leave it at the current (fast) rate
222 if ((size_b0 < 0x02000000)) {
223 /* reduce to 15.6 us (62.4 us / quad) */
224 memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K;
228 /* SDRAM Bank 0 is bigger - map first */
230 memctl->memc_or4 = ((-size_b0) & 0xFFFF0000) | CONFIG_SYS_OR_TIMING_SDRAM;
231 memctl->memc_br4 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
238 /* ------------------------------------------------------------------------- */
241 * Check memory range for valid RAM. A simple memory test determines
242 * the actually available RAM size between addresses `base' and
243 * `base + maxsize'. Some (not all) hardware errors are detected:
244 * - short between address lines
245 * - short between data lines
248 static long int dram_size (long int mamr_value, long int *base,
251 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
252 volatile memctl8xx_t *memctl = &immap->im_memctl;
254 memctl->memc_mamr = mamr_value;
256 return (get_ram_size (base, maxsize));
259 #ifdef CONFIG_CMD_DOC
262 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
263 volatile memctl8xx_t *memctl = &immap->im_memctl;
265 upmconfig (UPMB, (uint *) static_table,
266 sizeof (static_table) / sizeof (uint));
267 memctl->memc_mbmr = MAMR_DSA_1_CYCL;
269 doc_probe (FLASH_BASE1_PRELIM);