1/* 2 * Debugging macro include header 3 * 4 * Copyright (C) 1994-1999 Russell King 5 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11*/ 12 13#include <linux/serial_reg.h> 14 15/* OMAP3 serial ports */ 16#define OMAP3_UART3_BASE 0x49020000 17#define OMAP3_UART4_BASE 0x49042000 /* Only on 36xx */ 18#define OMAP3_UART4_AM35XX_BASE 0x4809E000 /* Only on AM35xx */ 19 20/* OMAP4 serial ports */ 21#define OMAP4_UART3_BASE 0x48020000 22#define OMAP4_UART4_BASE 0x4806e000 23 24/* TI81XX serial ports */ 25#define TI81XX_UART1_BASE 0x48020000 26#define TI81XX_UART2_BASE 0x48022000 27#define TI81XX_UART3_BASE 0x48024000 28 29/* AM3505/3517 UART4 */ 30#define AM35XX_UART4_BASE 0x4809E000 /* Only on AM3505/3517 */ 31 32/* AM33XX serial port */ 33#define AM33XX_UART1_BASE 0x44E09000 34 35/* OMAP5 serial ports */ 36#define OMAP5_UART3_BASE OMAP4_UART3_BASE 37#define OMAP5_UART4_BASE OMAP4_UART4_BASE 38#define OMAP5_UART5_BASE 0x48066000 39#define OMAP5_UART6_BASE 0x48068000 40 41/* External port on Zoom2/3 */ 42#define ZOOM_UART_BASE 0x10000000 43#define ZOOM_UART_VIRT 0xfa400000 44 45#define OMAP_PORT_SHIFT 2 46#define ZOOM_PORT_SHIFT 1 47 48#define UART_OFFSET(addr) ((addr) & 0x00ffffff) 49 50 .pushsection .data 51omap_uart_phys: .word 0 52omap_uart_virt: .word 0 53omap_uart_lsr: .word 0 54 .popsection 55 56 .macro addruart, rp, rv, tmp 57 58 /* Use omap_uart_phys/virt if already configured */ 5910: adr \rp, 99f @ get effective addr of 99f 60 ldr \rv, [\rp] @ get absolute addr of 99f 61 sub \rv, \rv, \rp @ offset between the two 62 ldr \rp, [\rp, #4] @ abs addr of omap_uart_phys 63 sub \tmp, \rp, \rv @ make it effective 64 ldr \rp, [\tmp, #0] @ omap_uart_phys 65 ldr \rv, [\tmp, #4] @ omap_uart_virt 66 cmp \rp, #0 @ is port configured? 67 cmpne \rv, #0 68 bne 100f @ already configured 69 70 /* Configure the UART offset from the phys/virt base */ 71#ifdef CONFIG_DEBUG_OMAP3UART3 72 mov \rp, #UART_OFFSET(OMAP3_UART1_BASE) 73 add \rp, \rp, #0x00fb0000 74 add \rp, \rp, #0x00006000 @ OMAP3_UART3_BASE 75 b 98f 76#endif 77#ifdef CONFIG_DEBUG_OMAP4UART3 78 mov \rp, #UART_OFFSET(OMAP4_UART3_BASE) 79 b 98f 80#endif 81#ifdef CONFIG_DEBUG_OMAP3UART4 82 mov \rp, #UART_OFFSET(OMAP3_UART1_BASE) 83 add \rp, \rp, #0x00fb0000 84 add \rp, \rp, #0x00028000 @ OMAP3_UART4_BASE 85 b 98f 86#endif 87#ifdef CONFIG_DEBUG_OMAP4UART4 88 mov \rp, #UART_OFFSET(OMAP4_UART4_BASE) 89 b 98f 90#endif 91#ifdef CONFIG_DEBUG_TI81XXUART1 92 mov \rp, #UART_OFFSET(TI81XX_UART1_BASE) 93 b 98f 94#endif 95#ifdef CONFIG_DEBUG_TI81XXUART2 96 mov \rp, #UART_OFFSET(TI81XX_UART2_BASE) 97 b 98f 98#endif 99#ifdef CONFIG_DEBUG_TI81XXUART3 100 mov \rp, #UART_OFFSET(TI81XX_UART3_BASE) 101 b 98f 102#endif 103#ifdef CONFIG_DEBUG_AM33XXUART1 104 ldr \rp, =AM33XX_UART1_BASE 105 and \rp, \rp, #0x00ffffff 106 b 97f 107#endif 108#ifdef CONFIG_DEBUG_ZOOM_UART 109 ldr \rp, =ZOOM_UART_BASE 110 str \rp, [\tmp, #0] @ omap_uart_phys 111 ldr \rp, =ZOOM_UART_VIRT 112 str \rp, [\tmp, #4] @ omap_uart_virt 113 mov \rp, #(UART_LSR << ZOOM_PORT_SHIFT) 114 str \rp, [\tmp, #8] @ omap_uart_lsr 115#endif 116 b 10b 117 118 /* AM33XX: Store both phys and virt address for the uart */ 11997: add \rp, \rp, #0x44000000 @ phys base 120 str \rp, [\tmp, #0] @ omap_uart_phys 121 sub \rp, \rp, #0x44000000 @ phys base 122 add \rp, \rp, #0xf9000000 @ virt base 123 str \rp, [\tmp, #4] @ omap_uart_virt 124 mov \rp, #(UART_LSR << OMAP_PORT_SHIFT) 125 str \rp, [\tmp, #8] @ omap_uart_lsr 126 127 b 10b 128 129 /* Store both phys and virt address for the uart */ 13098: add \rp, \rp, #0x48000000 @ phys base 131 str \rp, [\tmp, #0] @ omap_uart_phys 132 sub \rp, \rp, #0x48000000 @ phys base 133 add \rp, \rp, #0xfa000000 @ virt base 134 str \rp, [\tmp, #4] @ omap_uart_virt 135 mov \rp, #(UART_LSR << OMAP_PORT_SHIFT) 136 str \rp, [\tmp, #8] @ omap_uart_lsr 137 138 b 10b 139 140 .align 14199: .word . 142 .word omap_uart_phys 143 .ltorg 144 145100: /* Pass the UART_LSR reg address */ 146 ldr \tmp, [\tmp, #8] @ omap_uart_lsr 147 add \rp, \rp, \tmp 148 add \rv, \rv, \tmp 149 .endm 150 151 .macro senduart,rd,rx 152 orr \rd, \rd, \rx, lsl #24 @ preserve LSR reg offset 153 bic \rx, \rx, #0xff @ get base (THR) reg address 154 strb \rd, [\rx] @ send lower byte of rd 155 orr \rx, \rx, \rd, lsr #24 @ restore original rx (LSR) 156 bic \rd, \rd, #(0xff << 24) @ restore original rd 157 .endm 158 159 .macro busyuart,rd,rx 1601001: ldrb \rd, [\rx] @ rx contains UART_LSR address 161 and \rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE) 162 teq \rd, #(UART_LSR_TEMT | UART_LSR_THRE) 163 bne 1001b 164 .endm 165 166 .macro waituart,rd,rx 167 .endm 168