3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 * Keith Outwater, keith_outwater@mvis.com
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,
28 #include <asm/8xx_immap.h>
33 DECLARE_GLOBAL_DATA_PTR;
35 #ifdef CONFIG_STATUS_LED
36 #include <status_led.h>
39 #if defined(CONFIG_CMD_MII) && defined(CONFIG_MII)
48 #define PRINTF(fmt,args...) printf (fmt ,##args)
50 #define PRINTF(fmt,args...)
54 * The following UPM init tables were generated automatically by
55 * Motorola's MCUINIT program. See the README file for UPM to
56 * SDRAM pin assignments if you want to type this data into
57 * MCUINIT in order to reverse engineer the waveforms.
61 * UPM initialization tables for MICRON MT48LC16M16A2TG SDRAM devices
62 * (UPMA) and Virtex FPGA SelectMap interface (UPMB).
63 * NOTE that unused areas of the table are used to hold NOP, precharge
64 * and mode register set sequences.
67 #define UPMA_NOP_ADDR 0x5
68 #define UPMA_PRECHARGE_ADDR 0x6
69 #define UPMA_MRS_ADDR 0x12
71 #define UPM_SINGLE_READ_ADDR 0x00
72 #define UPM_BURST_READ_ADDR 0x08
73 #define UPM_SINGLE_WRITE_ADDR 0x18
74 #define UPM_BURST_WRITE_ADDR 0x20
75 #define UPM_REFRESH_ADDR 0x30
77 const uint sdram_upm_table[] = {
78 /* single read (offset 0x00 in upm ram) */
79 0x0e0fdc04, 0x01adfc04, 0x0fbffc00, 0x1fff5c05,
80 0xffffffff, 0x0fffffcd, 0x0fff0fce, 0xefcfffff,
81 /* burst read (offset 0x08 in upm ram) */
82 0x0f0fdc04, 0x00fdfc04, 0xf0fffc00, 0xf0fffc00,
83 0xf1fffc00, 0xfffffc00, 0xfffffc05, 0xffffffff,
84 0xffffffff, 0xffffffff, 0x0ffffff4, 0x1f3d5ff4,
85 0xfffffff4, 0xfffffff5, 0xffffffff, 0xffffffff,
86 /* single write (offset 0x18 in upm ram) */
87 0x0f0fdc04, 0x00ad3c00, 0x1fff5c05, 0xffffffff,
88 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
89 /* burst write (offset 0x20 in upm ram) */
90 0x0f0fdc00, 0x10fd7c00, 0xf0fffc00, 0xf0fffc00,
91 0xf1fffc04, 0xfffffc05, 0xffffffff, 0xffffffff,
92 0xffffffff, 0xffffffff, 0xffffffff, 0xfffff7ff,
93 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
94 /* refresh (offset 0x30 in upm ram) */
95 0x1ffddc84, 0xfffffc04, 0xfffffc04, 0xfffffc84,
96 0xfffffc05, 0xffffffff, 0xffffffff, 0xffffffff,
97 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
98 /* exception (offset 0x3C in upm ram) */
101 const uint selectmap_upm_table[] = {
102 /* single read (offset 0x00 in upm ram) */
103 0x88fffc06, 0x00fff404, 0x00fffc04, 0x33fffc00,
104 0xfffffc05, 0xffffffff, 0xffffffff, 0xffffffff,
105 /* burst read (offset 0x08 in upm ram) */
106 0xfffffc04, 0xfffffc05, 0xffffffff, 0xffffffff,
107 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
108 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
109 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
110 /* single write (offset 0x18 in upm ram) */
111 0x88fffc04, 0x00fff400, 0x77fffc05, 0xffffffff,
112 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
113 /* burst write (offset 0x20 in upm ram) */
114 0xfffffc04, 0xfffffc05, 0xffffffff, 0xffffffff,
115 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
116 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
117 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
118 /* refresh (offset 0x30 in upm ram) */
119 0xfffffc04, 0xfffffc05, 0xffffffff, 0xffffffff,
120 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
121 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
122 /* exception (offset 0x3C in upm ram) */
123 0xfffffc05, 0xffffffff, 0xffffffff, 0xffffffff
127 * Check board identity. Always successful (gives information only)
129 int checkboard (void)
135 i = getenv_f("board_id", buf, sizeof (buf));
136 s = (i > 0) ? buf : NULL;
141 printf ("<unknown> ");
144 i = getenv_f("serial#", buf, sizeof (buf));
145 s = (i > 0) ? buf : NULL;
148 printf ("S/N %s\n", s);
150 printf ("S/N <unknown>\n");
153 printf ("CPU at %s MHz, ", strmhz (buf, gd->cpu_clk));
154 printf ("local bus at %s MHz\n", strmhz (buf, gd->bus_clk));
161 phys_size_t initdram (int board_type)
163 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
164 volatile memctl8xx_t *memctl = &immr->im_memctl;
167 (uint *) sdram_upm_table,
168 sizeof (sdram_upm_table) / sizeof (uint)
172 * Setup MAMR register
174 memctl->memc_mptpr = CONFIG_SYS_MPTPR_1BK_8K;
175 memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */
178 * Map CS1* to SDRAM bank
180 memctl->memc_or1 = CONFIG_SYS_OR1;
181 memctl->memc_br1 = CONFIG_SYS_BR1;
184 * Perform SDRAM initialization sequence:
185 * 1. Apply at least one NOP command
186 * 2. 100 uS delay (JEDEC standard says 200 uS)
187 * 3. Issue 4 precharge commands
188 * 4. Perform two refresh cycles
189 * 5. Program mode register
191 * Program SDRAM for standard operation, sequential burst, burst length
192 * of 4, CAS latency of 2.
194 memctl->memc_mar = 0x00000000;
195 memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 |
196 MCR_MLCF (0) | UPMA_NOP_ADDR;
198 memctl->memc_mar = 0x00000000;
199 memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 |
200 MCR_MLCF (4) | UPMA_PRECHARGE_ADDR;
202 memctl->memc_mar = 0x00000000;
203 memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 |
204 MCR_MLCF (2) | UPM_REFRESH_ADDR;
206 memctl->memc_mar = 0x00000088;
207 memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 |
208 MCR_MLCF (1) | UPMA_MRS_ADDR;
210 memctl->memc_mar = 0x00000000;
211 memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 |
212 MCR_MLCF (0) | UPMA_NOP_ADDR;
216 memctl->memc_mamr |= MAMR_PTAE;
222 * Disk On Chip (DOC) Millenium initialization.
223 * The DOC lives in the CS2* space
225 #if defined(CONFIG_CMD_DOC)
228 printf ("Probing at 0x%.8x: ", DOC_BASE);
229 doc_probe (DOC_BASE);
234 * Miscellaneous intialization
236 int misc_init_r (void)
238 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
239 volatile memctl8xx_t *memctl = &immr->im_memctl;
242 * Set up UPMB to handle the Virtex FPGA SelectMap interface
244 upmconfig (UPMB, (uint *) selectmap_upm_table,
245 sizeof (selectmap_upm_table) / sizeof (uint));
247 memctl->memc_mbmr = 0x0;
249 config_mpc8xx_ioports (immr);
251 #if defined(CONFIG_CMD_MII)
255 #if defined(CONFIG_FPGA)
256 gen860t_init_fpga ();
262 * Final init hook before entering command loop.
264 int last_stage_init (void)
266 #if !defined(CONFIG_SC)
271 * Turn the beeper volume all the way down in case this is a warm boot.
273 set_beeper_volume (-64);
277 * Read the environment to see what to do with the beeper
279 i = getenv_f("beeper", buf, sizeof (buf));
288 * Stub to make POST code happy. Can't self-poweroff, so just hang.
290 void board_poweroff (void)
292 puts ("### Please power off the board ###\n");