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https://github.com/smaeul/u-boot.git
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178 lines
4.2 KiB
ArmAsm
178 lines
4.2 KiB
ArmAsm
/*
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* flashasm.S: flash magic for LART
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*
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* Copyright (C) 1999 2000 2001 Jan-Derk bakker (J.D.Bakker@its.tudelft.nl)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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.text
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.globl data_to_flash
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.globl data_from_flash
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/* Subroutine that takes data in r0 and formats it so it will be in */
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/* the correct order for the internal flash */
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/* used for LART only */
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data_to_flash:
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mov r1, #0x0
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tst r0, #0x00000001
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orrne r1, r1, #0x00001000
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tst r0, #0x00000002
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orrne r1, r1, #0x00004000
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tst r0, #0x00000004
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orrne r1, r1, #0x00000800
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tst r0, #0x00000008
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orrne r1, r1, #0x00000200
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tst r0, #0x00000010
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orrne r1, r1, #0x00000001
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tst r0, #0x00000020
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orrne r1, r1, #0x00000004
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tst r0, #0x00000040
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orrne r1, r1, #0x00000080
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tst r0, #0x00000080
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orrne r1, r1, #0x00000020
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tst r0, #0x00000100
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orrne r1, r1, #0x00002000
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tst r0, #0x00000200
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orrne r1, r1, #0x00008000
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tst r0, #0x00000400
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orrne r1, r1, #0x00000400
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tst r0, #0x00000800
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orrne r1, r1, #0x00000100
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tst r0, #0x00001000
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orrne r1, r1, #0x00000002
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tst r0, #0x00002000
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orrne r1, r1, #0x00000008
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tst r0, #0x00004000
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orrne r1, r1, #0x00000040
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tst r0, #0x00008000
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orrne r1, r1, #0x00000010
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tst r0, #0x00010000
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orrne r1, r1, #0x00100000
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tst r0, #0x00020000
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orrne r1, r1, #0x00400000
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tst r0, #0x00040000
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orrne r1, r1, #0x00080000
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tst r0, #0x00080000
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orrne r1, r1, #0x00020000
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tst r0, #0x00100000
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orrne r1, r1, #0x01000000
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tst r0, #0x00200000
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orrne r1, r1, #0x04000000
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tst r0, #0x00400000
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orrne r1, r1, #0x80000000
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tst r0, #0x00800000
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orrne r1, r1, #0x20000000
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tst r0, #0x01000000
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orrne r1, r1, #0x00200000
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tst r0, #0x02000000
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orrne r1, r1, #0x00800000
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tst r0, #0x04000000
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orrne r1, r1, #0x00040000
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tst r0, #0x08000000
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orrne r1, r1, #0x00010000
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tst r0, #0x10000000
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orrne r1, r1, #0x02000000
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tst r0, #0x20000000
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orrne r1, r1, #0x08000000
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tst r0, #0x40000000
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orrne r1, r1, #0x40000000
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tst r0, #0x80000000
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orrne r1, r1, #0x10000000
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mov r0, r1
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mov pc, lr
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/* Takes data received from the flash, and unshuffles it. */
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data_from_flash:
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mov r1, #0x00
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tst r0, #0x00000001
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orrne r1, r1, #0x00000010
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tst r0, #0x00000002
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orrne r1, r1, #0x00001000
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tst r0, #0x00000004
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orrne r1, r1, #0x00000020
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tst r0, #0x00000008
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orrne r1, r1, #0x00002000
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tst r0, #0x00000010
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orrne r1, r1, #0x00008000
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tst r0, #0x00000020
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orrne r1, r1, #0x00000080
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tst r0, #0x00000040
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orrne r1, r1, #0x00004000
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tst r0, #0x00000080
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orrne r1, r1, #0x00000040
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tst r0, #0x00000100
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orrne r1, r1, #0x00000800
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tst r0, #0x00000200
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orrne r1, r1, #0x00000008
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tst r0, #0x00000400
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orrne r1, r1, #0x00000400
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tst r0, #0x00000800
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orrne r1, r1, #0x00000004
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tst r0, #0x00001000
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orrne r1, r1, #0x00000001
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tst r0, #0x00002000
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orrne r1, r1, #0x00000100
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tst r0, #0x00004000
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orrne r1, r1, #0x00000002
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tst r0, #0x00008000
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orrne r1, r1, #0x00000200
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tst r0, #0x00010000
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orrne r1, r1, #0x08000000
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tst r0, #0x00020000
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orrne r1, r1, #0x00080000
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tst r0, #0x00040000
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orrne r1, r1, #0x04000000
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tst r0, #0x00080000
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orrne r1, r1, #0x00040000
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tst r0, #0x00100000
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orrne r1, r1, #0x00010000
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tst r0, #0x00200000
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orrne r1, r1, #0x01000000
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tst r0, #0x00400000
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orrne r1, r1, #0x00020000
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tst r0, #0x00800000
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orrne r1, r1, #0x02000000
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tst r0, #0x01000000
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orrne r1, r1, #0x00100000
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tst r0, #0x02000000
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orrne r1, r1, #0x10000000
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tst r0, #0x04000000
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orrne r1, r1, #0x00200000
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tst r0, #0x08000000
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orrne r1, r1, #0x20000000
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tst r0, #0x10000000
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orrne r1, r1, #0x80000000
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tst r0, #0x20000000
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orrne r1, r1, #0x00800000
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tst r0, #0x40000000
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orrne r1, r1, #0x40000000
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tst r0, #0x80000000
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orrne r1, r1, #0x00400000
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mov r0, r1
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mov pc, lr
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