diff options
Diffstat (limited to 'kernel/arch/arm/include/debug/sti.S')
| -rw-r--r-- | kernel/arch/arm/include/debug/sti.S | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/kernel/arch/arm/include/debug/sti.S b/kernel/arch/arm/include/debug/sti.S new file mode 100644 index 000000000..e3aa58ff1 --- /dev/null +++ b/kernel/arch/arm/include/debug/sti.S @@ -0,0 +1,61 @@ +/* + * 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 |