1/* 2 * arch/arm/include/debug/sti.S 3 * 4 * Debugging macro include header 5 * Copyright (C) 2013 STMicroelectronics (R&D) Limited. 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#define STIH41X_COMMS_BASE 0xfed00000 13#define STIH41X_ASC2_BASE (STIH41X_COMMS_BASE+0x32000) 14 15#define STIH41X_SBC_LPM_BASE 0xfe400000 16#define STIH41X_SBC_COMMS_BASE (STIH41X_SBC_LPM_BASE + 0x100000) 17#define STIH41X_SBC_ASC1_BASE (STIH41X_SBC_COMMS_BASE + 0x31000) 18 19 20#define VIRT_ADDRESS(x) (x - 0x1000000) 21 22#if IS_ENABLED(CONFIG_STIH41X_DEBUG_ASC2) 23#define DEBUG_LL_UART_BASE STIH41X_ASC2_BASE 24#endif 25 26#if IS_ENABLED(CONFIG_STIH41X_DEBUG_SBC_ASC1) 27#define DEBUG_LL_UART_BASE STIH41X_SBC_ASC1_BASE 28#endif 29 30#ifndef DEBUG_LL_UART_BASE 31#error "DEBUG UART is not Configured" 32#endif 33 34#define ASC_TX_BUF_OFF 0x04 35#define ASC_CTRL_OFF 0x0c 36#define ASC_STA_OFF 0x14 37 38#define ASC_STA_TX_FULL (1<<9) 39#define ASC_STA_TX_EMPTY (1<<1) 40 41 42 .macro addruart, rp, rv, tmp 43 ldr \rp, =DEBUG_LL_UART_BASE @ physical base 44 ldr \rv, =VIRT_ADDRESS(DEBUG_LL_UART_BASE) @ virt base 45 .endm 46 47 .macro senduart,rd,rx 48 strb \rd, [\rx, #ASC_TX_BUF_OFF] 49 .endm 50 51 .macro waituart,rd,rx 521001: ldr \rd, [\rx, #ASC_STA_OFF] 53 tst \rd, #ASC_STA_TX_FULL 54 bne 1001b 55 .endm 56 57 .macro busyuart,rd,rx 581001: ldr \rd, [\rx, #ASC_STA_OFF] 59 tst \rd, #ASC_STA_TX_EMPTY 60 beq 1001b 61 .endm 62