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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/arm/include/debug/msm.S | |
| parent | Initial commit. (diff) | |
| download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip | |
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/arm/include/debug/msm.S | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/include/debug/msm.S b/arch/arm/include/debug/msm.S new file mode 100644 index 000000000..530edc74f --- /dev/null +++ b/arch/arm/include/debug/msm.S @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * + * Copyright (C) 2007 Google, Inc. + * Copyright (c) 2011, Code Aurora Forum. All rights reserved. + * Author: Brian Swetland <swetland@google.com> + */ + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + + .macro senduart, rd, rx +ARM_BE8(rev \rd, \rd ) + @ Write the 1 character to UARTDM_TF + str \rd, [\rx, #0x70] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy, rd, rx + @ check for TX_EMT in UARTDM_SR + ldr \rd, [\rx, #0x08] +ARM_BE8(rev \rd, \rd ) + tst \rd, #0x08 + bne 1002f + @ wait for TXREADY in UARTDM_ISR +1001: ldr \rd, [\rx, #0x14] +ARM_BE8(rev \rd, \rd ) + tst \rd, #0x80 + beq 1001b +1002: + @ Clear TX_READY by writing to the UARTDM_CR register + mov \rd, #0x300 +ARM_BE8(rev \rd, \rd ) + str \rd, [\rx, #0x10] + @ Write 0x1 to NCF register + mov \rd, #0x1 +ARM_BE8(rev \rd, \rd ) + str \rd, [\rx, #0x40] + @ UARTDM reg. Read to induce delay + ldr \rd, [\rx, #0x08] + .endm + + .macro busyuart, rd, rx + .endm |