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,
29 /* ------------------------------------------------------------------------- */
31 static long int dram_size (long int, long int *, long int);
33 /* ------------------------------------------------------------------------- */
35 /* used PLD registers */
36 # define PLD_GCR1_REG (unsigned char *) (0x10000000 + 0)
37 # define PLD_EXT_RES (unsigned char *) (0x10000000 + 10)
38 # define PLD_EXT_FETH (unsigned char *) (0x10000000 + 11)
39 # define PLD_EXT_LED (unsigned char *) (0x10000000 + 12)
40 # define PLD_EXT_X21 (unsigned char *) (0x10000000 + 13)
42 #define _NOT_USED_ 0xFFFFFFFF
44 const uint sdram_table[] = {
46 * Single Read. (Offset 0 in UPMA RAM)
48 0xFE2DB004, 0xF0AA7004, 0xF0A5F400, 0xF3AFFC47, /* last */
51 * SDRAM Initialization (offset 5 in UPMA RAM)
53 * This is no UPM entry point. The following definition uses
54 * the remaining space to establish an initialization
55 * sequence, which is executed by a RUN command.
58 0xFFFAF834, 0xFFE5B435, /* last */
61 * Burst Read. (Offset 8 in UPMA RAM)
63 0xFE2DB004, 0xF0AF7404, 0xF0AFFC00, 0xF0AFFC00,
64 0xF0AFFC00, 0xF0AAF800, 0xF1A5E447, /* last */
66 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
67 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
69 * Single Write. (Offset 18 in UPMA RAM)
71 0xFE29B300, 0xF1A27304, 0xFFA5F747, /* last */
73 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
75 * Burst Write. (Offset 20 in UPMA RAM)
77 0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00,
78 0xF1AAF804, 0xFFA5F447, /* last */
79 _NOT_USED_, _NOT_USED_,
80 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
81 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
83 * Refresh (Offset 30 in UPMA RAM)
85 0xFFAC3884, 0xFFAC3404, 0xFFAFFC04, 0xFFAFFC84,
86 0xFFAFFC07, /* last */
87 _NOT_USED_, _NOT_USED_, _NOT_USED_,
89 * MRS sequence (Offset 38 in UPMA RAM)
91 0xFFAAB834, 0xFFA57434, 0xFFAFFC05, /* last */
94 * Exception. (Offset 3c in UPMA RAM)
96 0xFFAFFC04, 0xFFAFFC05, /* last */
97 _NOT_USED_, _NOT_USED_,
100 /* ------------------------------------------------------------------------- */
103 phys_size_t initdram (int board_type)
105 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
106 volatile memctl8xx_t *memctl = &immap->im_memctl;
107 volatile iop8xx_t *iop = &immap->im_ioport;
108 volatile fec_t *fecp = &immap->im_cpm.cp_fec;
111 upmconfig (UPMA, (uint *) sdram_table,
112 sizeof (sdram_table) / sizeof (uint));
115 * Preliminary prescaler for refresh (depends on number of
116 * banks): This value is selected for four cycles every 62.4 us
117 * with two SDRAM banks or four cycles every 31.2 us with one
118 * bank. It will be adjusted after memory sizing.
120 memctl->memc_mptpr = CONFIG_SYS_MPTPR;
122 memctl->memc_mar = 0x00000088;
125 * Map controller banks 2 and 3 to the SDRAM banks 2 and 3 at
126 * preliminary addresses - these have to be modified after the
127 * SDRAM size has been determined.
129 memctl->memc_or2 = CONFIG_SYS_OR2_PRELIM;
130 memctl->memc_br2 = CONFIG_SYS_BR2_PRELIM;
132 memctl->memc_mamr = CONFIG_SYS_MAMR & (~(MAMR_PTAE)); /* no refresh yet */
136 /* perform SDRAM initializsation sequence */
138 memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */
140 memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */
143 memctl->memc_mcr = 0x80004105; /* SDRAM precharge */
145 memctl->memc_mcr = 0x80004030; /* SDRAM 16x autorefresh */
147 memctl->memc_mcr = 0x80004138; /* SDRAM upload parameters */
150 memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
155 * Check Bank 0 Memory Size for re-configuration
158 size = dram_size (CONFIG_SYS_MAMR, (long *) SDRAM_BASE_PRELIM,
164 memctl->memc_mamr = CONFIG_SYS_MAMR;
170 memctl->memc_or2 = ((-size) & 0xFFFF0000) | CONFIG_SYS_OR2_PRELIM;
171 memctl->memc_br2 = ((CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V);
175 /* prepare pin multiplexing for fast ethernet */
178 fecp->fec_ecntrl = 0x00000004; /* rev D3 pinmux SET */
179 iop->iop_pdpar |= 0x0080; /* set pin as MII_clock */
185 /* ------------------------------------------------------------------------- */
188 * Check memory range for valid RAM. A simple memory test determines
189 * the actually available RAM size between addresses `base' and
190 * `base + maxsize'. Some (not all) hardware errors are detected:
191 * - short between address lines
192 * - short between data lines
195 static long int dram_size (long int mamr_value, long int *base,
198 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
199 volatile memctl8xx_t *memctl = &immap->im_memctl;
201 memctl->memc_mamr = mamr_value;
203 return (get_ram_size (base, maxsize));
207 * Check Board Identity:
210 int checkboard (void)
215 void board_serial_init (void)
217 ; /* nothing to do here */
220 void board_ether_init (void)
222 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
223 volatile iop8xx_t *iop = &immap->im_ioport;
224 volatile fec_t *fecp = &immap->im_cpm.cp_fec;
227 fecp->fec_ecntrl = 0x00000004; /* rev D3 pinmux SET */
228 iop->iop_pdpar |= 0x0080; /* set pin as MII_clock */
231 int board_early_init_f (void)
233 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
234 volatile cpmtimer8xx_t *timers = &immap->im_cpmtimer;
235 volatile memctl8xx_t *memctl = &immap->im_memctl;
236 volatile iop8xx_t *iop = &immap->im_ioport;
238 /* configure the LED timing output pins - port A pin 4 */
239 iop->iop_papar = 0x0800;
240 iop->iop_padir = 0x0800;
242 /* start timer 2 for the 4hz LED blink rate */
243 timers->cpmt_tmr2 = 0xff2c; /* 4HZ for 64MHz */
244 timers->cpmt_trr2 = 0x000003d0; /* clk/16 , prescale=256 */
245 timers->cpmt_tgcr = 0x00000810; /* run timer 2 */
247 /* chip select for PLD access */
248 memctl->memc_br6 = 0x10000401;
249 memctl->memc_or6 = 0xFC000908;
251 /* PLD initial values ( set LEDs, remove reset on LXT) */
253 *PLD_GCR1_REG = 0x06;
255 *PLD_EXT_FETH = 0x40;
261 void board_get_enetaddr (uchar * addr)
264 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
265 volatile cpm8xx_t *cpm = &immap->im_cpm;
266 unsigned int rccrtmp;
268 char default_mac_addr[] = { 0x00, 0x08, 0x01, 0x02, 0x03, 0x04 };
270 for (i = 0; i < 6; i++)
271 addr[i] = default_mac_addr[i];
273 printf ("There is an error in the i2c driver .. /n");
274 printf ("You need to fix it first....../n");
276 rccrtmp = cpm->cp_rccr;
277 cpm->cp_rccr |= 0x0020;
279 i2c_reg_read (0xa0, 0);
280 printf ("seep = '-%c-%c-%c-%c-%c-%c-'\n",
281 i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0),
282 i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0),
283 i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0));
285 cpm->cp_rccr = rccrtmp;