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- /*
- * Copyright (C) 2003-2005 SAN People
- *
- * Debugging macro include header
- *
- * 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.
- *
- */
- #ifdef CONFIG_MMU
- #define AT91_IO_P2V(x) ((x) - 0x01000000)
- #else
- #define AT91_IO_P2V(x) (x)
- #endif
- #define CONFIG_DEBUG_UART_VIRT AT91_IO_P2V(CONFIG_DEBUG_UART_PHYS)
- #define AT91_DBGU_SR (0x14) /* Status Register */
- #define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */
- #define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */
- #define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */
- .macro addruart, rp, rv, tmp
- ldr \rp, =CONFIG_DEBUG_UART_PHYS @ System peripherals (phys address)
- ldr \rv, =CONFIG_DEBUG_UART_VIRT @ System peripherals (virt address)
- .endm
- .macro senduart,rd,rx
- strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register
- .endm
- .macro waituart,rd,rx
- 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
- tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
- beq 1001b
- .endm
- .macro busyuart,rd,rx
- 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
- tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete
- beq 1001b
- .endm
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