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MXC: add debug-macro.S for mxc

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This patch adds debug-macro.S for arch-mxc

Disadvantage: Due to the board specific UART definition, these macros (and
compile time) will fail for multi board kernels.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2008-07-05 10:02:51 +02:00 committed by Robert Schwebel
parent d0f349fbce
commit 4bc256501a
2 changed files with 43 additions and 0 deletions
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5
include/asm-arm/arch-mxc/board-mx31ads.h
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@ -109,4 +109,9 @@
#define MXC_MAX_EXP_IO_LINES 16
/* mandatory for CONFIG_LL_DEBUG */
#define MXC_LL_UART_PADDR UART1_BASE_ADDR
#define MXC_LL_UART_VADDR AIPS1_IO_ADDRESS(UART1_BASE_ADDR)
#endif /* __ASM_ARCH_MXC_BOARD_MX31ADS_H__ */

38
include/asm-arm/arch-mxc/debug-macro.S Normal file
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@ -0,0 +1,38 @@
/* linux/include/asm-arm/arch-imx/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.
*
*/
#include <asm/arch/hardware.h>
#ifdef CONFIG_MACH_MX31ADS
#include <asm/arch/board-mx31ads.h>
#endif
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
ldreq \rx, =MXC_LL_UART_PADDR @ physical
ldrne \rx, =MXC_LL_UART_VADDR @ virtual
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0x40] @ TXDATA
.endm
.macro waituart,rd,rx
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #0x98] @ SR2
tst \rd, #1 << 3 @ TXDC
beq 1002b @ wait until transmit done
.endm