| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * arch/arm/include/debug/sti.S |
| * |
| * Debugging macro include header |
| * Copyright (C) 2013 STMicroelectronics (R&D) Limited. |
| */ |
| |
| #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 |
