diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-lh7a40x/debug-macro.S |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-arm/arch-lh7a40x/debug-macro.S')
-rw-r--r-- | include/asm-arm/arch-lh7a40x/debug-macro.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/asm-arm/arch-lh7a40x/debug-macro.S b/include/asm-arm/arch-lh7a40x/debug-macro.S new file mode 100644 index 00000000000..421dcd6a850 --- /dev/null +++ b/include/asm-arm/arch-lh7a40x/debug-macro.S @@ -0,0 +1,39 @@ +/* linux/include/asm-arm/arch-lh7a40x/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * +*/ + + @ It is not known if this will be appropriate for every 40x + @ board. + + .macro addruart,rx + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + mov \rx, #0x00000700 @ offset from base + orreq \rx, \rx, #0x80000000 @ physical base + orrne \rx, \rx, #0xf8000000 @ virtual base + .endm + + .macro senduart,rd,rx + strb \rd, [\rx] @ DATA + .endm + + .macro busyuart,rd,rx @ spin while busy +1001: ldr \rd, [\rx, #0x10] @ STATUS + tst \rd, #1 << 3 @ BUSY (TX FIFO not empty) + bne 1001b @ yes, spin + .endm + + .macro waituart,rd,rx @ wait for Tx FIFO room +1001: ldrb \rd, [\rx, #0x10] @ STATUS + tst \rd, #1 << 5 @ TXFF (TX FIFO full) + bne 1001b @ yes, spin + .endm |