diff options
Diffstat (limited to 'board/esd/cpci440/cpci440.c')
| -rw-r--r-- | board/esd/cpci440/cpci440.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/board/esd/cpci440/cpci440.c b/board/esd/cpci440/cpci440.c new file mode 100644 index 0000000..51a5edd --- /dev/null +++ b/board/esd/cpci440/cpci440.c @@ -0,0 +1,140 @@ +/* + * (C) Copyright 2002 + * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + +#include <common.h> +#include <asm/processor.h> + + +long int fixed_sdram( void ); + +int board_pre_init (void) +{ + uint reg; + + /*-------------------------------------------------------------------- + * Setup the external bus controller/chip selects + *-------------------------------------------------------------------*/ + mtdcr( ebccfga, xbcfg ); + reg = mfdcr( ebccfgd ); + mtdcr( ebccfgd, reg | 0x04000000 ); /* Set ATC */ + + mtebc( pb0ap, 0x92015480 ); /* FLASH/SRAM */ + mtebc( pb0cr, 0xFF87A000 ); /* BAS=0xff8 8MB R/W 16-bit */ + /* test-only: other regs still missing... */ + + /*-------------------------------------------------------------------- + * Setup the interrupt controller polarities, triggers, etc. + *-------------------------------------------------------------------*/ + mtdcr( uic0sr, 0xffffffff ); /* clear all */ + mtdcr( uic0er, 0x00000000 ); /* disable all */ + mtdcr( uic0cr, 0x00000009 ); /* SMI & UIC1 crit are critical */ + mtdcr( uic0pr, 0xfffffe13 ); /* per ref-board manual */ + mtdcr( uic0tr, 0x01c00008 ); /* per ref-board manual */ + mtdcr( uic0vr, 0x00000001 ); /* int31 highest, base=0x000 */ + mtdcr( uic0sr, 0xffffffff ); /* clear all */ + + mtdcr( uic1sr, 0xffffffff ); /* clear all */ + mtdcr( uic1er, 0x00000000 ); /* disable all */ + mtdcr( uic1cr, 0x00000000 ); /* all non-critical */ + mtdcr( uic1pr, 0xffffe0ff ); /* per ref-board manual */ + mtdcr( uic1tr, 0x00ffc000 ); /* per ref-board manual */ + mtdcr( uic1vr, 0x00000001 ); /* int31 highest, base=0x000 */ + mtdcr( uic1sr, 0xffffffff ); /* clear all */ + + return 0; +} + + + +int checkboard (void) +{ + sys_info_t sysinfo; + get_sys_info(&sysinfo); + + printf("Board: esd CPCI-440\n"); + printf("\tVCO: %lu MHz\n", sysinfo.freqVCOMhz/1000000); + printf("\tCPU: %lu MHz\n", sysinfo.freqProcessor/1000000); + printf("\tPLB: %lu MHz\n", sysinfo.freqPLB/1000000); + printf("\tOPB: %lu MHz\n", sysinfo.freqOPB/1000000); + printf("\tEPB: %lu MHz\n", sysinfo.freqEPB/1000000); + return (0); +} + + +long int initdram (int board_type) +{ + long dram_size = 0; + + dram_size = fixed_sdram(); + return dram_size; +} + + +/************************************************************************* + * fixed sdram init -- doesn't use serial presence detect. + * + * Assumes: 64 MB, non-ECC, non-registered + * PLB @ 133 MHz + * + ************************************************************************/ +long int fixed_sdram( void ) +{ + uint reg; + + /*-------------------------------------------------------------------- + * Setup some default + *------------------------------------------------------------------*/ + mtsdram( mem_uabba, 0x00000000 ); /* ubba=0 (default) */ + mtsdram( mem_slio, 0x00000000 ); /* rdre=0 wrre=0 rarw=0 */ + mtsdram( mem_devopt,0x00000000 ); /* dll=0 ds=0 (normal) */ + mtsdram( mem_wddctr,0x40000000 ); /* wrcp=0 dcd=0 */ + mtsdram( mem_clktr, 0x40000000 ); /* clkp=1 (90 deg wr) dcdt=0 */ + + /*-------------------------------------------------------------------- + * Setup for board-specific specific mem + *------------------------------------------------------------------*/ + /* + * Following for CAS Latency = 2.5 @ 133 MHz PLB + */ + mtsdram( mem_b0cr, 0x00082001 );/* SDBA=0x000, 64MB, Mode 2, enabled*/ + mtsdram( mem_tr0, 0x410a4012 );/* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */ + /* RA=10 RD=3 */ + mtsdram( mem_tr1, 0x8080082f );/* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */ + mtsdram( mem_rtr, 0x08200000 );/* Rate 15.625 ns @ 133 MHz PLB */ + mtsdram( mem_cfg1, 0x00000000 );/* Self-refresh exit, disable PM */ + udelay( 400 ); /* Delay 200 usecs (min) */ + + /*-------------------------------------------------------------------- + * Enable the controller, then wait for DCEN to complete + *------------------------------------------------------------------*/ + mtsdram( mem_cfg0, 0x86000000 );/* DCEN=1, PMUD=1, 64-bit */ + for(;;) + { + mfsdram( mem_mcsts, reg ); + if( reg & 0x80000000 ) + break; + } + + return( 64 * 1024 * 1024 ); /* 64 MB */ +} |