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authorwdenk <wdenk>2002-03-21 09:13:59 +0000
committerwdenk <wdenk>2002-03-21 09:13:59 +0000
commit59b4523d111fd7b77e43297e11e220164ec8c909 (patch)
tree4f8dd202ea6fd803bd2220dedbf909e63ecd902c
parent77bc4f9e30caa1637a4c6634935fd72517333bae (diff)
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Initial revision
-rw-r--r--board/lart/flashasm.S177
1 files changed, 177 insertions, 0 deletions
diff --git a/board/lart/flashasm.S b/board/lart/flashasm.S
new file mode 100644
index 0000000..9021972
--- /dev/null
+++ b/board/lart/flashasm.S
@@ -0,0 +1,177 @@
+/*
+ * 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