From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/arm/include/debug/samsung.S | 94 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 arch/arm/include/debug/samsung.S (limited to 'arch/arm/include/debug/samsung.S') diff --git a/arch/arm/include/debug/samsung.S b/arch/arm/include/debug/samsung.S new file mode 100644 index 000000000..ab474d564 --- /dev/null +++ b/arch/arm/include/debug/samsung.S @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2005, 2007 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks + */ + +#include + +/* The S5PV210/S5PC110 implementations are as belows. */ + + .macro fifo_level_s5pv210 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + and \rd, \rd, #S5PV210_UFSTAT_TXMASK + .endm + + .macro fifo_full_s5pv210 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S5PV210_UFSTAT_TXFULL + .endm + +/* The S3C2440 implementations are used by default as they are the + * most widely re-used */ + + .macro fifo_level_s3c2440 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + and \rd, \rd, #S3C2440_UFSTAT_TXMASK + .endm + +#ifndef fifo_level +#define fifo_level fifo_level_s3c2440 +#endif + + .macro fifo_full_s3c2440 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2440_UFSTAT_TXFULL + .endm + +#ifndef fifo_full +#define fifo_full fifo_full_s3c2440 +#endif + + .macro senduart,rd,rx + strb \rd, [\rx, # S3C2410_UTXH] + .endm + + .macro busyuart, rd, rx + ldr \rd, [\rx, # S3C2410_UFCON] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? + beq 1001f @ + @ FIFO enabled... +1003: + fifo_full \rd, \rx + bne 1003b + b 1002f + +1001: + @ busy waiting for non fifo + ldr \rd, [\rx, # S3C2410_UTRSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UTRSTAT_TXFE + beq 1001b + +1002: @ exit busyuart + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + ldr \rd, [\rx, # S3C2410_UFCON] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? + beq 1001f @ + @ FIFO enabled... +1003: + fifo_level \rd, \rx + teq \rd, #0 + bne 1003b + b 1002f +1001: + @ idle waiting for non fifo + ldr \rd, [\rx, # S3C2410_UTRSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UTRSTAT_TXFE + beq 1001b + +1002: @ exit busyuart + .endm -- cgit v1.2.3