/* * Memory Setup stuff - taken from ??? * * 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 <config.h> #include <version.h> /* some parameters for the board */ SYSCON1: .long 0x80000100 SYSCON2: .long 0x80001100 SYSCON3: .long 0x80002200 MEMCFG1: .long 0x80000180 MEMCFG2: .long 0x800001C0 SDCONF: .long 0x80002300 SDRFPR: .long 0x80002340 syscon1_val: .long 0x00040100 syscon2_val: .long 0x00000102 syscon3_val: .long 0x0000020E memcfg1_val: .long 0x1f101710 memcfg2_mask: .long 0x0000ffff @ only set lower 16 bits memcfg2_val: .long 0x00001f13 @ upper 16 bits are reserved for CS7 + CS6 sdrfpr_val: .long 0x00000240 sdconf_val: .long 0x00000522 /* setting up the memory */ .globl lowlevel_init lowlevel_init: /* * SYSCON1-3 */ ldr r0, SYSCON1 ldr r1, syscon1_val str r1, [r0] ldr r0, SYSCON2 ldr r1, syscon2_val str r1, [r0] ldr r0, SYSCON3 ldr r1, syscon3_val str r1, [r0] /* * MEMCFG1 */ ldr r0, MEMCFG1 ldr r1, memcfg1_val str r1, [r0] /* * MEMCFG2 */ ldr r0, MEMCFG2 ldr r2, [r0] ldr r1, memcfg2_mask bic r2, r2, r1 ldr r1, memcfg2_val orr r2, r2, r1 str r2, [r0] /* * SDRFPR,SDCONF */ ldr r0, SDCONF ldr r1, sdconf_val str r1, [r0] ldr r0, SDRFPR ldr r1, sdrfpr_val str r1, [r0] /* everything is fine now */ mov pc, lr