diff options
Diffstat (limited to 'board/armadillo/lowlevel_init.S')
| -rw-r--r-- | board/armadillo/lowlevel_init.S | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/board/armadillo/lowlevel_init.S b/board/armadillo/lowlevel_init.S deleted file mode 100644 index e7d373d..0000000 --- a/board/armadillo/lowlevel_init.S +++ /dev/null @@ -1,66 +0,0 @@ -/* - * Initialization stuff - taken from hermit - * (C) Copyright 2005 Rowel Atienza <rowel@diwalabs.com> - * Armadillo board HT1070 - * - * 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 */ -/* setting up the memory */ -#define SRAM_START 0x60000000 -#define SRAM_SIZE 0x0000c000 - -.globl lowlevel_init -lowlevel_init: - mov r0, #0x70 /* 32-bit code + data, MMU mandatory */ - mcr p15, 0, r0, c1, c0, 0 /* MMU init */ - - mov r0, #0 - mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */ - mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */ - - mov r0, #0x80000000 /* I/O base */ - - mov r1, #0x6 /* CLKCTL_73 in SYSCON3 */ - add r2, r0, #0x2200 /* address of SYSCON3 in r2 */ - str r1, [r2] /* set clock speed to 73.728 MHz */ - - mov r1, #0x81 /* 64KHz DRAM refresh period */ - str r1, [r0, #0x200] /* set DRFPR */ - - mov r1, #0x500 /* permanent enable, 16bits wide */ - add r1, r1, #0x42 /* 128Mbit, CAS lat = 2 SDRAM */ - add r2, r0, #0x2300 /* load address in r2 */ - str r1, [r2] - - mov r1, #0x100 /* SDRAM refresh rate */ - add r2, r0, #0x2340 /* load address in r2 */ - str r1, [r2] - - mov sp, #SRAM_START /* init stack pointer */ - add sp, sp, #SRAM_SIZE - - /* everything is fine now */ - mov pc, lr |