3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
10 #include <linux/mtd/doc2000.h>
12 extern int kbd_init(void);
13 extern int drv_kbd_init(void);
15 /* ------------------------------------------------------------------------- */
17 static long int dram_size (long int, long int *, long int);
19 /* ------------------------------------------------------------------------- */
21 #define _NOT_USED_ 0xFFFFFFFF
23 const uint sdram_table[] =
26 * Single Read. (Offset 0 in UPMA RAM)
28 0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00,
29 0x1FF77C47, /* last */
31 * SDRAM Initialization (offset 5 in UPMA RAM)
33 * This is no UPM entry point. The following definition uses
34 * the remaining space to establish an initialization
35 * sequence, which is executed by a RUN command.
38 0x1FF77C34, 0xEFEABC34, 0x1FB57C35, /* last */
40 * Burst Read. (Offset 8 in UPMA RAM)
42 0x1F07FC04, 0xEEAEFC04, 0x10ADFC04, 0xF0AFFC00,
43 0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C47, /* last */
44 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
45 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
47 * Single Write. (Offset 18 in UPMA RAM)
49 0x1F27FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */
50 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
52 * Burst Write. (Offset 20 in UPMA RAM)
54 0x1F07FC04, 0xEEAEBC00, 0x10AD7C00, 0xF0AFFC00,
55 0xF0AFFC00, 0xE1BBBC04, 0x1FF77C47, /* last */
57 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
58 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
60 * Refresh (Offset 30 in UPMA RAM)
62 0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
63 0xFFFFFC84, 0xFFFFFC07, /* last */
64 _NOT_USED_, _NOT_USED_,
65 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
67 * Exception. (Offset 3c in UPMA RAM)
69 0x1FF7FC07, /* last */
70 _NOT_USED_, _NOT_USED_, _NOT_USED_,
73 const uint static_table[] =
76 * Single Read. (Offset 0 in UPMA RAM)
78 0x0FFFFC04, 0x0FF3FC04, 0x0FF3CC04, 0x0FF3CC04,
79 0x0FF3EC04, 0x0FF3CC00, 0x0FF7FC04, 0x3FFFFC04,
80 0xFFFFFC04, 0xFFFFFC05, /* last */
81 _NOT_USED_, _NOT_USED_,
82 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
83 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
84 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
86 * Single Write. (Offset 18 in UPMA RAM)
88 0x0FFFFC04, 0x00FFFC04, 0x00FFFC04, 0x00FFFC04,
89 0x01FFFC00, 0x3FFFFC04, 0xFFFFFC04, 0xFFFFFC05, /* last */
90 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
91 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
92 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
93 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
94 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
95 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
96 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
97 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
100 /* ------------------------------------------------------------------------- */
103 * Check Board Identity:
105 * Test TQ ID string (TQM8xx...)
106 * If present, check for "L" type (no second DRAM bank),
107 * otherwise "L" type is assumed as default.
109 * Return 1 for "L" type, 0 else.
112 int checkboard (void)
115 int i = getenv_f("serial#", buf, sizeof(buf));
117 if (i < 0 || strncmp(buf, "TQM8", 4)) {
118 printf ("### No HW ID - assuming RBC823\n");
128 /* ------------------------------------------------------------------------- */
130 phys_size_t initdram (int board_type)
132 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
133 volatile memctl8xx_t *memctl = &immap->im_memctl;
134 long int size_b0, size8, size9;
136 upmconfig (UPMA, (uint *) sdram_table,
137 sizeof (sdram_table) / sizeof (uint));
140 * 1 Bank of 64Mbit x 2 devices
142 memctl->memc_mptpr = CONFIG_SYS_MPTPR_1BK_4K;
143 memctl->memc_mar = 0x00000088;
146 * Map controller SDRAM bank 0
148 memctl->memc_or4 = CONFIG_SYS_OR4_PRELIM;
149 memctl->memc_br4 = CONFIG_SYS_BR4_PRELIM;
150 memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */
154 * Perform SDRAM initializsation sequence
156 memctl->memc_mcr = 0x80008105; /* SDRAM bank 0 */
158 memctl->memc_mamr = (CONFIG_SYS_MAMR_8COL & ~(MAMR_TLFA_MSK)) | MAMR_TLFA_8X;
160 memctl->memc_mcr = 0x80008130; /* SDRAM bank 0 - execute twice */
162 memctl->memc_mamr = (CONFIG_SYS_MAMR_8COL & ~(MAMR_TLFA_MSK)) | MAMR_TLFA_4X;
165 memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
169 * Preliminary prescaler for refresh (depends on number of
170 * banks): This value is selected for four cycles every 62.4 us
171 * with two SDRAM banks or four cycles every 31.2 us with one
172 * bank. It will be adjusted after memory sizing.
174 memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K; /* 16: but should be: CONFIG_SYS_MPTPR_1BK_4K */
177 * Check Bank 0 Memory Size for re-configuration
181 size8 = dram_size (CONFIG_SYS_MAMR_8COL, (long *) SDRAM_BASE4_PRELIM,
188 size9 = dram_size (CONFIG_SYS_MAMR_9COL, (long *) SDRAM_BASE4_PRELIM,
191 if (size8 < size9) { /* leave configuration at 9 columns */
193 /* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */
194 } else { /* back to 8 columns */
196 memctl->memc_mamr = CONFIG_SYS_MAMR_8COL;
198 /* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */
204 * Adjust refresh rate depending on SDRAM type, both banks
205 * For types > 128 MBit leave it at the current (fast) rate
207 if ((size_b0 < 0x02000000)) {
208 /* reduce to 15.6 us (62.4 us / quad) */
209 memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K;
213 /* SDRAM Bank 0 is bigger - map first */
215 memctl->memc_or4 = ((-size_b0) & 0xFFFF0000) | CONFIG_SYS_OR_TIMING_SDRAM;
216 memctl->memc_br4 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
223 /* ------------------------------------------------------------------------- */
226 * Check memory range for valid RAM. A simple memory test determines
227 * the actually available RAM size between addresses `base' and
228 * `base + maxsize'. Some (not all) hardware errors are detected:
229 * - short between address lines
230 * - short between data lines
233 static long int dram_size (long int mamr_value, long int *base,
236 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
237 volatile memctl8xx_t *memctl = &immap->im_memctl;
239 memctl->memc_mamr = mamr_value;
241 return (get_ram_size (base, maxsize));
244 #ifdef CONFIG_CMD_DOC
247 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
248 volatile memctl8xx_t *memctl = &immap->im_memctl;
250 upmconfig (UPMB, (uint *) static_table,
251 sizeof (static_table) / sizeof (uint));
252 memctl->memc_mbmr = MAMR_DSA_1_CYCL;
254 doc_probe (FLASH_BASE1_PRELIM);