diff options
Diffstat (limited to 'board/sc520_cdp/sc520_cdp_asm16.S')
| -rw-r--r-- | board/sc520_cdp/sc520_cdp_asm16.S | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/board/sc520_cdp/sc520_cdp_asm16.S b/board/sc520_cdp/sc520_cdp_asm16.S deleted file mode 100644 index a3e700a62..000000000 --- a/board/sc520_cdp/sc520_cdp_asm16.S +++ /dev/null @@ -1,83 +0,0 @@ -/* - * (C) Copyright 2002 - * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>. - * - * 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 - */ - -/* - * 16bit initialization code. - * This code have to map the area of the boot flash - * that is used by U-boot to its final destination. - */ - -.text -.section .start16, "ax" -.code16 -.globl board_init16 -board_init16: - /* Alias MMCR to 0xdf000 */ - movw $0xfffc, %dx - movl $0x800df0cb, %eax - outl %eax, %dx - - /* Set ds to point to MMCR alias */ - movw $0xdf00, %ax - movw %ax, %ds - - /* Map the entire flash at 0x38000000 - * (with BOOTCS and PAR14, use 0xabfff800 for ROMCS1) */ - movl $0xc0, %edi - movl $0x8bfff800, %eax - movl %eax, (%di) - - /* Disable SDRAM write buffer */ - movw $0x40,%di - xorw %ax,%ax - movb %al, (%di) - - /* Disabe MMCR alias */ - movw $0xfffc, %dx - movl $0x000000cb, %eax - outl %eax, %dx - - /* the return address is tored in bp */ - jmp *%bp - - -.section .bios, "ax" -.code16 -.globl realmode_reset -realmode_reset: - /* Alias MMCR to 0xdf000 */ - movw $0xfffc, %dx - movl $0x800df0cb, %eax - outl %eax, %dx - - /* Set ds to point to MMCR alias */ - movw $0xdf00, %ax - movw %ax, %ds - - /* issue software reset thorugh MMCR */ - movl $0xd72, %edi - movb $0x01, %al - movb %al, (%di) - -1: hlt - jmp 1 |