| /* |
| * Copyright (c) 2011 Picochip Ltd., Jamie Iles |
| * |
| * 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. |
| * |
| * Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit |
| * accesses to the 8250. |
| */ |
| #include <linux/serial_reg.h> |
| |
| #define UART_SHIFT 2 |
| #define PICOXCELL_UART1_BASE 0x80230000 |
| #define PHYS_TO_IO(x) (((x) & 0x00ffffff) | 0xfe000000) |
| |
| .macro addruart, rp, rv, tmp |
| ldr \rv, =PHYS_TO_IO(PICOXCELL_UART1_BASE) |
| ldr \rp, =PICOXCELL_UART1_BASE |
| .endm |
| |
| .macro senduart,rd,rx |
| str \rd, [\rx, #UART_TX << UART_SHIFT] |
| .endm |
| |
| .macro busyuart,rd,rx |
| 1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT] |
| and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE |
| teq \rd, #UART_LSR_TEMT | UART_LSR_THRE |
| bne 1002b |
| .endm |
| |
| /* The UART's don't have any flow control IO's wired up. */ |
| .macro waituart,rd,rx |
| .endm |
