/* * arch/arm/include/debug/sti.S * * Debugging macro include header * Copyright (C) 2013 STMicroelectronics (R&D) Limited. * * 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. */ #define STIH41X_COMMS_BASE 0xfed00000 #define STIH41X_ASC2_BASE (STIH41X_COMMS_BASE+0x32000) #define STIH41X_SBC_LPM_BASE 0xfe400000 #define STIH41X_SBC_COMMS_BASE (STIH41X_SBC_LPM_BASE + 0x100000) #define STIH41X_SBC_ASC1_BASE (STIH41X_SBC_COMMS_BASE + 0x31000) #define VIRT_ADDRESS(x) (x - 0x1000000) #if IS_ENABLED([31mCONFIG_STIH41X_DEBUG_ASC2[0m) #define DEBUG_LL_UART_BASE STIH41X_ASC2_BASE #endif #if IS_ENABLED([31mCONFIG_STIH41X_DEBUG_SBC_ASC1[0m) #define DEBUG_LL_UART_BASE STIH41X_SBC_ASC1_BASE #endif #ifndef DEBUG_LL_UART_BASE #error "DEBUG UART is not Configured" #endif #define ASC_TX_BUF_OFF 0x04 #define ASC_CTRL_OFF 0x0c #define ASC_STA_OFF 0x14 #define ASC_STA_TX_FULL (1<<9) #define ASC_STA_TX_EMPTY (1<<1) .macro addruart, rp, rv, tmp ldr \rp, =DEBUG_LL_UART_BASE @ physical base ldr \rv, =VIRT_ADDRESS(DEBUG_LL_UART_BASE) @ virt base .endm .macro senduart,rd,rx strb \rd, [\rx, #ASC_TX_BUF_OFF] .endm .macro waituart,rd,rx 1001: ldr \rd, [\rx, #ASC_STA_OFF] tst \rd, #ASC_STA_TX_FULL bne 1001b .endm .macro busyuart,rd,rx 1001: ldr \rd, [\rx, #ASC_STA_OFF] tst \rd, #ASC_STA_TX_EMPTY beq 1001b .endm |