3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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 <asm/processor.h>
29 extern void lxt971_no_sleep(void);
32 long int fixed_sdram( void );
34 int board_early_init_f (void)
38 /*--------------------------------------------------------------------
39 * Setup the external bus controller/chip selects
40 *-------------------------------------------------------------------*/
41 mtdcr( ebccfga, xbcfg );
42 reg = mfdcr( ebccfgd );
43 mtdcr( ebccfgd, reg | 0x04000000 ); /* Set ATC */
45 mtebc( pb0ap, 0x92015480 ); /* FLASH/SRAM */
46 mtebc( pb0cr, 0xFF87A000 ); /* BAS=0xff8 8MB R/W 16-bit */
47 /* test-only: other regs still missing... */
49 /*--------------------------------------------------------------------
50 * Setup the interrupt controller polarities, triggers, etc.
51 *-------------------------------------------------------------------*/
52 mtdcr( uic0sr, 0xffffffff ); /* clear all */
53 mtdcr( uic0er, 0x00000000 ); /* disable all */
54 mtdcr( uic0cr, 0x00000009 ); /* SMI & UIC1 crit are critical */
55 mtdcr( uic0pr, 0xfffffe13 ); /* per ref-board manual */
56 mtdcr( uic0tr, 0x01c00008 ); /* per ref-board manual */
57 mtdcr( uic0vr, 0x00000001 ); /* int31 highest, base=0x000 */
58 mtdcr( uic0sr, 0xffffffff ); /* clear all */
60 mtdcr( uic1sr, 0xffffffff ); /* clear all */
61 mtdcr( uic1er, 0x00000000 ); /* disable all */
62 mtdcr( uic1cr, 0x00000000 ); /* all non-critical */
63 mtdcr( uic1pr, 0xffffe0ff ); /* per ref-board manual */
64 mtdcr( uic1tr, 0x00ffc000 ); /* per ref-board manual */
65 mtdcr( uic1vr, 0x00000001 ); /* int31 highest, base=0x000 */
66 mtdcr( uic1sr, 0xffffffff ); /* clear all */
75 get_sys_info(&sysinfo);
77 printf("Board: esd CPCI-440\n");
78 printf("\tVCO: %lu MHz\n", sysinfo.freqVCOMhz/1000000);
79 printf("\tCPU: %lu MHz\n", sysinfo.freqProcessor/1000000);
80 printf("\tPLB: %lu MHz\n", sysinfo.freqPLB/1000000);
81 printf("\tOPB: %lu MHz\n", sysinfo.freqOPB/1000000);
82 printf("\tEPB: %lu MHz\n", sysinfo.freqEPB/1000000);
85 * Disable sleep mode in LXT971
93 long int initdram (int board_type)
97 dram_size = fixed_sdram();
102 /*************************************************************************
103 * fixed sdram init -- doesn't use serial presence detect.
105 * Assumes: 64 MB, non-ECC, non-registered
108 ************************************************************************/
109 long int fixed_sdram( void )
113 #if 1 /* test-only */
114 /*--------------------------------------------------------------------
116 *------------------------------------------------------------------*/
117 mtsdram( mem_uabba, 0x00000000 ); /* ubba=0 (default) */
118 mtsdram( mem_slio, 0x00000000 ); /* rdre=0 wrre=0 rarw=0 */
119 mtsdram( mem_devopt,0x00000000 ); /* dll=0 ds=0 (normal) */
120 mtsdram( mem_wddctr,0x40000000 ); /* wrcp=0 dcd=0 */
121 mtsdram( mem_clktr, 0x40000000 ); /* clkp=1 (90 deg wr) dcdt=0 */
123 /*--------------------------------------------------------------------
124 * Setup for board-specific specific mem
125 *------------------------------------------------------------------*/
127 * Following for CAS Latency = 2.5 @ 133 MHz PLB
129 mtsdram( mem_b0cr, 0x00082001 );/* SDBA=0x000, 64MB, Mode 2, enabled*/
130 mtsdram( mem_tr0, 0x410a4012 );/* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
132 mtsdram( mem_tr1, 0x8080082f );/* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
133 mtsdram( mem_rtr, 0x08200000 );/* Rate 15.625 ns @ 133 MHz PLB */
134 mtsdram( mem_cfg1, 0x00000000 );/* Self-refresh exit, disable PM */
135 udelay( 400 ); /* Delay 200 usecs (min) */
137 /*--------------------------------------------------------------------
138 * Enable the controller, then wait for DCEN to complete
139 *------------------------------------------------------------------*/
140 mtsdram( mem_cfg0, 0x86000000 );/* DCEN=1, PMUD=1, 64-bit */
143 mfsdram( mem_mcsts, reg );
144 if( reg & 0x80000000 )
148 return( 64 * 1024 * 1024 ); /* 64 MB */
150 return( 32 * 1024 * 1024 ); /* 64 MB */