diff options
Diffstat (limited to 'board/sc520_spunk/sc520_spunk_asm16.S')
| -rw-r--r-- | board/sc520_spunk/sc520_spunk_asm16.S | 47 |
1 files changed, 23 insertions, 24 deletions
diff --git a/board/sc520_spunk/sc520_spunk_asm16.S b/board/sc520_spunk/sc520_spunk_asm16.S index cdcbbbe..8bb1766 100644 --- a/board/sc520_spunk/sc520_spunk_asm16.S +++ b/board/sc520_spunk/sc520_spunk_asm16.S @@ -34,32 +34,32 @@ board_init16: /* Alias MMCR to 0xdf000 */ movw $0xfffc, %dx - movl $0x800df0cb, %eax - outl %eax, %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 + 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) + movl $0x8bfff800, %eax + movl %eax, (%di) /* Disable SDRAM write buffer */ movw $0x40,%di - xorw %ax,%ax - movb %al, (%di) + xorw %ax,%ax + movb %al, (%di) /* Disabe MMCR alias */ movw $0xfffc, %dx - movl $0x000000cb, %eax - outl %eax, %dx - + movl $0x000000cb, %eax + outl %eax, %dx + /* the return address is stored in bp */ jmp *%bp - + .section .bios, "ax" .code16 @@ -67,18 +67,17 @@ board_init16: realmode_reset: /* Alias MMCR to 0xdf000 */ movw $0xfffc, %dx - movl $0x800df0cb, %eax - outl %eax, %dx - + movl $0x800df0cb, %eax + outl %eax, %dx + /* Set ds to point to MMCR alias */ - movw $0xdf00, %ax - movw %ax, %ds - + movw $0xdf00, %ax + movw %ax, %ds + /* issue software reset thorugh MMCR */ movl $0xd72, %edi - movb $0x01, %al - movb %al, (%di) + movb $0x01, %al + movb %al, (%di) 1: hlt jmp 1 - |