1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * arch/arm/include/debug/sti.S 4 * 5 * Debugging macro include header 6 * Copyright (C) 2013 STMicroelectronics (R&D) Limited. 7 */ 8 9#define STIH41X_COMMS_BASE 0xfed00000 10#define STIH41X_ASC2_BASE (STIH41X_COMMS_BASE+0x32000) 11 12#define STIH41X_SBC_LPM_BASE 0xfe400000 13#define STIH41X_SBC_COMMS_BASE (STIH41X_SBC_LPM_BASE + 0x100000) 14#define STIH41X_SBC_ASC1_BASE (STIH41X_SBC_COMMS_BASE + 0x31000) 15 16 17#define VIRT_ADDRESS(x) (x - 0x1000000) 18 19#if IS_ENABLED(CONFIG_STIH41X_DEBUG_ASC2) 20#define DEBUG_LL_UART_BASE STIH41X_ASC2_BASE 21#endif 22 23#if IS_ENABLED(CONFIG_STIH41X_DEBUG_SBC_ASC1) 24#define DEBUG_LL_UART_BASE STIH41X_SBC_ASC1_BASE 25#endif 26 27#ifndef DEBUG_LL_UART_BASE 28#error "DEBUG UART is not Configured" 29#endif 30 31#define ASC_TX_BUF_OFF 0x04 32#define ASC_CTRL_OFF 0x0c 33#define ASC_STA_OFF 0x14 34 35#define ASC_STA_TX_FULL (1<<9) 36#define ASC_STA_TX_EMPTY (1<<1) 37 38 39 .macro addruart, rp, rv, tmp 40 ldr \rp, =DEBUG_LL_UART_BASE @ physical base 41 ldr \rv, =VIRT_ADDRESS(DEBUG_LL_UART_BASE) @ virt base 42 .endm 43 44 .macro senduart,rd,rx 45 strb \rd, [\rx, #ASC_TX_BUF_OFF] 46 .endm 47 48 .macro waituart,rd,rx 491001: ldr \rd, [\rx, #ASC_STA_OFF] 50 tst \rd, #ASC_STA_TX_FULL 51 bne 1001b 52 .endm 53 54 .macro busyuart,rd,rx 551001: ldr \rd, [\rx, #ASC_STA_OFF] 56 tst \rd, #ASC_STA_TX_EMPTY 57 beq 1001b 58 .endm 59