| /* | |
| * 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(CONFIG_STIH41X_DEBUG_ASC2) | |
| #define DEBUG_LL_UART_BASE STIH41X_ASC2_BASE | |
| #endif | |
| #if IS_ENABLED(CONFIG_STIH41X_DEBUG_SBC_ASC1) | |
| #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 |