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git.ipfire.org Git - u-boot.git/blob - board/r360mpi/r360mpi.c
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,
33 #include <linux/types.h>
34 #include <linux/string.h> /* for strdup */
38 * Memory Controller Using
40 * CS0 - Flash memory (0x40000000)
41 * CS1 - SDRAM (0x00000000}
50 /* ------------------------------------------------------------------------- */
52 #define _not_used_ 0xffffffff
54 const uint sdram_table
[]=
56 /* single read. (offset 0 in upm RAM) */
57 0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
60 /* MRS initialization (offset 5) */
62 0x1ff77c34, 0xefeabc34, 0x1fb57c35,
64 /* burst read. (offset 8 in upm RAM) */
65 0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
66 0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47,
67 _not_used_
, _not_used_
, _not_used_
, _not_used_
,
68 _not_used_
, _not_used_
, _not_used_
, _not_used_
,
70 /* single write. (offset 18 in upm RAM) */
71 0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47,
72 _not_used_
, _not_used_
, _not_used_
, _not_used_
,
74 /* burst write. (offset 20 in upm RAM) */
75 0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
76 0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _not_used_
,
77 _not_used_
, _not_used_
, _not_used_
, _not_used_
,
78 _not_used_
, _not_used_
, _not_used_
, _not_used_
,
80 /* refresh. (offset 30 in upm RAM) */
81 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
82 0xfffffc84, 0xfffffc07, _not_used_
, _not_used_
,
83 _not_used_
, _not_used_
, _not_used_
, _not_used_
,
85 /* exception. (offset 3c in upm RAM) */
86 0x7ffffc07, _not_used_
, _not_used_
, _not_used_
};
88 /* ------------------------------------------------------------------------- */
91 * Check Board Identity:
96 puts ("Board: R360 MPI Board\n");
100 /* ------------------------------------------------------------------------- */
102 static long int dram_size (long int, long int *, long int);
104 /* ------------------------------------------------------------------------- */
106 long int initdram (int board_type
)
108 volatile immap_t
*immap
= (immap_t
*) CFG_IMMR
;
109 volatile memctl8xx_t
*memctl
= &immap
->im_memctl
;
110 long int size8
, size9
;
111 long int size_b0
= 0;
114 upmconfig (UPMA
, (uint
*) sdram_table
,
115 sizeof (sdram_table
) / sizeof (uint
));
118 * Preliminary prescaler for refresh (depends on number of
119 * banks): This value is selected for four cycles every 62.4 us
120 * with two SDRAM banks or four cycles every 31.2 us with one
121 * bank. It will be adjusted after memory sizing.
123 memctl
->memc_mptpr
= CFG_MPTPR_2BK_8K
;
125 memctl
->memc_mar
= 0x00000088;
128 * Map controller bank 2 to the SDRAM bank at
129 * preliminary address - these have to be modified after the
130 * SDRAM size has been determined.
132 memctl
->memc_or2
= CFG_OR2_PRELIM
;
133 memctl
->memc_br2
= CFG_BR2_PRELIM
;
135 memctl
->memc_mamr
= CFG_MAMR_8COL
& (~(MAMR_PTAE
)); /* no refresh yet */
139 /* perform SDRAM initializsation sequence */
141 memctl
->memc_mcr
= 0x80004105; /* SDRAM bank 0 */
143 memctl
->memc_mcr
= 0x80004230; /* SDRAM bank 0 - execute twice */
146 memctl
->memc_mamr
|= MAMR_PTAE
; /* enable refresh */
151 * Check Bank 0 Memory Size for re-configuration
155 size8
= dram_size (CFG_MAMR_8COL
, (ulong
*) SDRAM_BASE2_PRELIM
,
163 size9
= dram_size (CFG_MAMR_9COL
, (ulong
*) SDRAM_BASE2_PRELIM
,
166 if (size8
< size9
) { /* leave configuration at 9 columns */
168 /* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */
169 } else { /* back to 8 columns */
171 memctl
->memc_mamr
= CFG_MAMR_8COL
;
173 /* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */
179 * Adjust refresh rate depending on SDRAM type, both banks
180 * For types > 128 MBit leave it at the current (fast) rate
182 if ((size_b0
< 0x02000000)) {
183 /* reduce to 15.6 us (62.4 us / quad) */
184 memctl
->memc_mptpr
= CFG_MPTPR_2BK_4K
;
192 memctl
->memc_or1
= ((-size_b0
) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM
;
193 memctl
->memc_br1
= (CFG_SDRAM_BASE
& BR_BA_MSK
) | BR_MS_UPMA
| BR_V
;
195 /* adjust refresh rate depending on SDRAM type, one bank */
196 reg
= memctl
->memc_mptpr
;
197 reg
>>= 1; /* reduce to CFG_MPTPR_1BK_8K / _4K */
198 memctl
->memc_mptpr
= reg
;
202 #ifdef CONFIG_CAN_DRIVER
203 /* Initialize OR3 / BR3 */
204 memctl
->memc_or3
= CFG_OR3_CAN
; /* switch GPLB_5 to GPLA_5 */
205 memctl
->memc_br3
= CFG_BR3_CAN
;
207 /* Initialize MBMR */
208 memctl
->memc_mbmr
= MAMR_GPL_B4DIS
; /* GPL_B4 works as UPWAITB */
210 /* Initialize UPMB for CAN: single read */
211 memctl
->memc_mdr
= 0xFFFFC004;
212 memctl
->memc_mcr
= 0x0100 | UPMB
;
214 memctl
->memc_mdr
= 0x0FFFD004;
215 memctl
->memc_mcr
= 0x0101 | UPMB
;
217 memctl
->memc_mdr
= 0x0FFFC000;
218 memctl
->memc_mcr
= 0x0102 | UPMB
;
220 memctl
->memc_mdr
= 0x3FFFC004;
221 memctl
->memc_mcr
= 0x0103 | UPMB
;
223 memctl
->memc_mdr
= 0xFFFFDC05;
224 memctl
->memc_mcr
= 0x0104 | UPMB
;
226 /* Initialize UPMB for CAN: single write */
227 memctl
->memc_mdr
= 0xFFFCC004;
228 memctl
->memc_mcr
= 0x0118 | UPMB
;
230 memctl
->memc_mdr
= 0xCFFCD004;
231 memctl
->memc_mcr
= 0x0119 | UPMB
;
233 memctl
->memc_mdr
= 0x0FFCC000;
234 memctl
->memc_mcr
= 0x011A | UPMB
;
236 memctl
->memc_mdr
= 0x7FFCC004;
237 memctl
->memc_mcr
= 0x011B | UPMB
;
239 memctl
->memc_mdr
= 0xFFFDCC05;
240 memctl
->memc_mcr
= 0x011C | UPMB
;
246 /* ------------------------------------------------------------------------- */
249 * Check memory range for valid RAM. A simple memory test determines
250 * the actually available RAM size between addresses `base' and
251 * `base + maxsize'. Some (not all) hardware errors are detected:
252 * - short between address lines
253 * - short between data lines
256 static long int dram_size (long int mamr_value
,
257 long int *base
, long int maxsize
)
259 volatile immap_t
*immap
= (immap_t
*) CFG_IMMR
;
260 volatile memctl8xx_t
*memctl
= &immap
->im_memctl
;
261 volatile long int *addr
;
263 ulong save
[32]; /* to make test non-destructive */
266 memctl
->memc_mamr
= mamr_value
;
268 for (cnt
= maxsize
/ sizeof (long); cnt
> 0; cnt
>>= 1) {
269 addr
= base
+ cnt
; /* pointer arith! */
275 /* write 0 to base address */
280 /* check at base address */
281 if ((val
= *addr
) != 0) {
286 for (cnt
= 1; cnt
<= maxsize
/ sizeof (long); cnt
<<= 1) {
287 addr
= base
+ cnt
; /* pointer arith! */
292 return (cnt
* sizeof (long));
298 /* ------------------------------------------------------------------------- */
300 void r360_i2c_lcd_write (uchar data0
, uchar data1
)
302 if (i2c_write (CFG_I2C_LCD_ADDR
, data0
, 1, &data1
, 1)) {
303 printf("Can't write lcd data 0x%02X 0x%02X.\n", data0
, data1
);
307 /* ------------------------------------------------------------------------- */
309 /*-----------------------------------------------------------------------
310 * Keyboard Controller
313 /* Number of bytes returned from Keyboard Controller */
314 #define KEYBD_KEY_MAX 16 /* maximum key number */
315 #define KEYBD_DATALEN ((KEYBD_KEY_MAX + 7) / 8) /* normal key scan data */
317 static uchar
*key_match (uchar
*);
319 int misc_init_r (void)
321 uchar kbd_data
[KEYBD_DATALEN
];
322 uchar keybd_env
[2 * KEYBD_DATALEN
+ 1];
326 i2c_init (CFG_I2C_SPEED
, CFG_I2C_SLAVE
);
328 i2c_read (CFG_I2C_KEY_ADDR
, 0, 0, kbd_data
, KEYBD_DATALEN
);
330 for (i
= 0; i
< KEYBD_DATALEN
; ++i
) {
331 sprintf (keybd_env
+ i
+ i
, "%02X", kbd_data
[i
]);
333 setenv ("keybd", keybd_env
);
335 str
= strdup (key_match (keybd_env
)); /* decode keys */
337 #ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
338 setenv ("preboot", str
); /* set or delete definition */
339 #endif /* CONFIG_PREBOOT */
347 /*-----------------------------------------------------------------------
348 * Check if pressed key(s) match magic sequence,
349 * and return the command string associated with that key(s).
351 * If no key press was decoded, NULL is returned.
353 * Note: the first character of the argument will be overwritten with
354 * the "magic charcter code" of the decoded key(s), or '\0'.
357 * Note: the string points to static environment data and must be
358 * saved before you call any function that modifies the environment.
360 #ifdef CONFIG_PREBOOT
362 static uchar kbd_magic_prefix
[] = "key_magic";
363 static uchar kbd_command_prefix
[] = "key_cmd";
365 static uchar
*key_match (uchar
* kbd_str
)
367 uchar magic
[sizeof (kbd_magic_prefix
) + 1];
368 uchar cmd_name
[sizeof (kbd_command_prefix
) + 1];
370 uchar
*kbd_magic_keys
;
374 * The following string defines the characters that can pe appended
375 * to "key_magic" to form the names of environment variables that
376 * hold "magic" key codes, i. e. such key codes that can cause
377 * pre-boot actions. If the string is empty (""), then only
378 * "key_magic" is checked (old behaviour); the string "125" causes
379 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
381 if ((kbd_magic_keys
= getenv ("magic_keys")) != NULL
) {
382 /* loop over all magic keys;
383 * use '\0' suffix in case of empty string
385 for (suffix
= kbd_magic_keys
;
386 *suffix
|| suffix
== kbd_magic_keys
;
388 sprintf (magic
, "%s%c", kbd_magic_prefix
, *suffix
);
391 printf ("### Check magic \"%s\"\n", magic
);
394 if ((str
= getenv (magic
)) != 0) {
397 printf ("### Compare \"%s\" \"%s\"\n",
400 if (strcmp (kbd_str
, str
) == 0) {
401 sprintf (cmd_name
, "%s%c",
405 if ((cmd
= getenv (cmd_name
)) != 0) {
407 printf ("### Set PREBOOT to $(%s): \"%s\"\n",
417 printf ("### Delete PREBOOT\n");
422 #endif /* CONFIG_PREBOOT */
424 /* Read Keyboard status */
425 int do_kbd (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
427 uchar kbd_data
[KEYBD_DATALEN
];
428 uchar keybd_env
[2 * KEYBD_DATALEN
+ 1];
431 i2c_init (CFG_I2C_SPEED
, CFG_I2C_SLAVE
);
434 i2c_read (CFG_I2C_KEY_ADDR
, 0, 0, kbd_data
, KEYBD_DATALEN
);
437 for (i
= 0; i
< KEYBD_DATALEN
; ++i
) {
438 sprintf (keybd_env
+ i
+ i
, "%02X", kbd_data
[i
]);
439 printf (" %02x", kbd_data
[i
]);
442 setenv ("keybd", keybd_env
);
446 cmd_tbl_t
U_BOOT_CMD(kbd
) = MK_CMD_ENTRY(
448 "kbd - read keyboard status\n",