| Srinivas Kandagatla | 5026aec | 2013-06-25 12:15:32 +0100 | [diff] [blame] | 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 |
| 52 | 1001: ldr \rd, [\rx, #ASC_STA_OFF] |
| 53 | tst \rd, #ASC_STA_TX_FULL |
| 54 | bne 1001b |
| 55 | .endm |
| 56 | |
| 57 | .macro busyuart,rd,rx |
| 58 | 1001: ldr \rd, [\rx, #ASC_STA_OFF] |
| 59 | tst \rd, #ASC_STA_TX_EMPTY |
| 60 | beq 1001b |
| 61 | .endm |