diff options
Diffstat (limited to 'arch/arm/include/debug/sti.S')
| -rw-r--r-- | arch/arm/include/debug/sti.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/include/debug/sti.S b/arch/arm/include/debug/sti.S new file mode 100644 index 0000000000..dc796ac2ac --- /dev/null +++ b/arch/arm/include/debug/sti.S @@ -0,0 +1,39 @@ +/* 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 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, =CONFIG_DEBUG_UART_PHYS @ physical base + ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base + .endm + + .macro senduart,rd,rx + strb \rd, [\rx, #ASC_TX_BUF_OFF] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,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 |