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kernel add
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/*
* Renesas SCIF(A) debugging macro include header
*
* Based on r8a7790.S
*
* Copyright (C) 2012-2013 Renesas Electronics Corporation
* Copyright (C) 1994-1999 Russell King
*
* 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.
*/
#define SCIF_PHYS CONFIG_DEBUG_UART_PHYS
#define SCIF_VIRT ((SCIF_PHYS & 0x00ffffff) | 0xfd000000)
#if CONFIG_DEBUG_UART_PHYS < 0xe6e00000
/* SCIFA */
#define FTDR 0x20
#define FSR 0x14
#else
/* SCIF */
#define FTDR 0x0c
#define FSR 0x10
#endif
#define TDFE (1 << 5)
#define TEND (1 << 6)
.macro addruart, rp, rv, tmp
ldr \rp, =SCIF_PHYS
ldr \rv, =SCIF_VIRT
.endm
.macro waituart, rd, rx
1001: ldrh \rd, [\rx, #FSR]
tst \rd, #TDFE
beq 1001b
.endm
.macro senduart, rd, rx
strb \rd, [\rx, #FTDR]
ldrh \rd, [\rx, #FSR]
bic \rd, \rd, #TEND
strh \rd, [\rx, #FSR]
.endm
.macro busyuart, rd, rx
1001: ldrh \rd, [\rx, #FSR]
tst \rd, #TEND
beq 1001b
.endm
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