178 lines
4.2 KiB
ArmAsm
178 lines
4.2 KiB
ArmAsm
/*
|
|
* flashasm.S: flash magic for LART
|
|
*
|
|
* Copyright (C) 1999 2000 2001 Jan-Derk bakker (J.D.Bakker@its.tudelft.nl)
|
|
*
|
|
* 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
|
|
*
|
|
*/
|
|
|
|
.text
|
|
|
|
|
|
.globl data_to_flash
|
|
.globl data_from_flash
|
|
/* Subroutine that takes data in r0 and formats it so it will be in */
|
|
/* the correct order for the internal flash */
|
|
/* used for LART only */
|
|
data_to_flash:
|
|
mov r1, #0x0
|
|
|
|
tst r0, #0x00000001
|
|
orrne r1, r1, #0x00001000
|
|
tst r0, #0x00000002
|
|
orrne r1, r1, #0x00004000
|
|
tst r0, #0x00000004
|
|
orrne r1, r1, #0x00000800
|
|
tst r0, #0x00000008
|
|
orrne r1, r1, #0x00000200
|
|
tst r0, #0x00000010
|
|
orrne r1, r1, #0x00000001
|
|
tst r0, #0x00000020
|
|
orrne r1, r1, #0x00000004
|
|
tst r0, #0x00000040
|
|
orrne r1, r1, #0x00000080
|
|
tst r0, #0x00000080
|
|
orrne r1, r1, #0x00000020
|
|
|
|
tst r0, #0x00000100
|
|
orrne r1, r1, #0x00002000
|
|
tst r0, #0x00000200
|
|
orrne r1, r1, #0x00008000
|
|
tst r0, #0x00000400
|
|
orrne r1, r1, #0x00000400
|
|
tst r0, #0x00000800
|
|
orrne r1, r1, #0x00000100
|
|
tst r0, #0x00001000
|
|
orrne r1, r1, #0x00000002
|
|
tst r0, #0x00002000
|
|
orrne r1, r1, #0x00000008
|
|
tst r0, #0x00004000
|
|
orrne r1, r1, #0x00000040
|
|
tst r0, #0x00008000
|
|
orrne r1, r1, #0x00000010
|
|
|
|
tst r0, #0x00010000
|
|
orrne r1, r1, #0x00100000
|
|
tst r0, #0x00020000
|
|
orrne r1, r1, #0x00400000
|
|
tst r0, #0x00040000
|
|
orrne r1, r1, #0x00080000
|
|
tst r0, #0x00080000
|
|
orrne r1, r1, #0x00020000
|
|
tst r0, #0x00100000
|
|
orrne r1, r1, #0x01000000
|
|
tst r0, #0x00200000
|
|
orrne r1, r1, #0x04000000
|
|
tst r0, #0x00400000
|
|
orrne r1, r1, #0x80000000
|
|
tst r0, #0x00800000
|
|
orrne r1, r1, #0x20000000
|
|
|
|
tst r0, #0x01000000
|
|
orrne r1, r1, #0x00200000
|
|
tst r0, #0x02000000
|
|
orrne r1, r1, #0x00800000
|
|
tst r0, #0x04000000
|
|
orrne r1, r1, #0x00040000
|
|
tst r0, #0x08000000
|
|
orrne r1, r1, #0x00010000
|
|
tst r0, #0x10000000
|
|
orrne r1, r1, #0x02000000
|
|
tst r0, #0x20000000
|
|
orrne r1, r1, #0x08000000
|
|
tst r0, #0x40000000
|
|
orrne r1, r1, #0x40000000
|
|
tst r0, #0x80000000
|
|
orrne r1, r1, #0x10000000
|
|
|
|
mov r0, r1
|
|
mov pc, lr
|
|
|
|
/* Takes data received from the flash, and unshuffles it. */
|
|
data_from_flash:
|
|
mov r1, #0x00
|
|
|
|
tst r0, #0x00000001
|
|
orrne r1, r1, #0x00000010
|
|
tst r0, #0x00000002
|
|
orrne r1, r1, #0x00001000
|
|
tst r0, #0x00000004
|
|
orrne r1, r1, #0x00000020
|
|
tst r0, #0x00000008
|
|
orrne r1, r1, #0x00002000
|
|
tst r0, #0x00000010
|
|
orrne r1, r1, #0x00008000
|
|
tst r0, #0x00000020
|
|
orrne r1, r1, #0x00000080
|
|
tst r0, #0x00000040
|
|
orrne r1, r1, #0x00004000
|
|
tst r0, #0x00000080
|
|
orrne r1, r1, #0x00000040
|
|
|
|
tst r0, #0x00000100
|
|
orrne r1, r1, #0x00000800
|
|
tst r0, #0x00000200
|
|
orrne r1, r1, #0x00000008
|
|
tst r0, #0x00000400
|
|
orrne r1, r1, #0x00000400
|
|
tst r0, #0x00000800
|
|
orrne r1, r1, #0x00000004
|
|
tst r0, #0x00001000
|
|
orrne r1, r1, #0x00000001
|
|
tst r0, #0x00002000
|
|
orrne r1, r1, #0x00000100
|
|
tst r0, #0x00004000
|
|
orrne r1, r1, #0x00000002
|
|
tst r0, #0x00008000
|
|
orrne r1, r1, #0x00000200
|
|
|
|
tst r0, #0x00010000
|
|
orrne r1, r1, #0x08000000
|
|
tst r0, #0x00020000
|
|
orrne r1, r1, #0x00080000
|
|
tst r0, #0x00040000
|
|
orrne r1, r1, #0x04000000
|
|
tst r0, #0x00080000
|
|
orrne r1, r1, #0x00040000
|
|
tst r0, #0x00100000
|
|
orrne r1, r1, #0x00010000
|
|
tst r0, #0x00200000
|
|
orrne r1, r1, #0x01000000
|
|
tst r0, #0x00400000
|
|
orrne r1, r1, #0x00020000
|
|
tst r0, #0x00800000
|
|
orrne r1, r1, #0x02000000
|
|
|
|
tst r0, #0x01000000
|
|
orrne r1, r1, #0x00100000
|
|
tst r0, #0x02000000
|
|
orrne r1, r1, #0x10000000
|
|
tst r0, #0x04000000
|
|
orrne r1, r1, #0x00200000
|
|
tst r0, #0x08000000
|
|
orrne r1, r1, #0x20000000
|
|
tst r0, #0x10000000
|
|
orrne r1, r1, #0x80000000
|
|
tst r0, #0x20000000
|
|
orrne r1, r1, #0x00800000
|
|
tst r0, #0x40000000
|
|
orrne r1, r1, #0x40000000
|
|
tst r0, #0x80000000
|
|
orrne r1, r1, #0x00400000
|
|
|
|
mov r0, r1
|
|
mov pc, lr
|