projects / thirdparty / kernel / stable.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 5026aecf SK |
2 | /* |
| 3 | * arch/arm/include/debug/sti.S | |
| 4 | * | |
| 5 | * Debugging macro include header | |
| 6 | * Copyright (C) 2013 STMicroelectronics (R&D) Limited. | |
| 5026aecf SK |
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 | |
| 49 | 1001: ldr \rd, [\rx, #ASC_STA_OFF] | |
| 50 | tst \rd, #ASC_STA_TX_FULL | |
| 51 | bne 1001b | |
| 52 | .endm | |
| 53 | ||
| 54 | .macro busyuart,rd,rx | |
| 55 | 1001: ldr \rd, [\rx, #ASC_STA_OFF] | |
| 56 | tst \rd, #ASC_STA_TX_EMPTY | |
| 57 | beq 1001b | |
| 58 | .endm |