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/mips/lantiq/early_printk.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 arch/mips/lantiq/early_printk.c (limited to 'arch/mips/lantiq/early_printk.c') diff --git a/arch/mips/lantiq/early_printk.c b/arch/mips/lantiq/early_printk.c new file mode 100644 index 000000000..4e4a28be1 --- /dev/null +++ b/arch/mips/lantiq/early_printk.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * + * Copyright (C) 2010 John Crispin + */ + +#include +#include +#include + +#define ASC_BUF 1024 +#define LTQ_ASC_FSTAT ((u32 *)(LTQ_EARLY_ASC + 0x0048)) +#ifdef __BIG_ENDIAN +#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020 + 3)) +#else +#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020)) +#endif +#define TXMASK 0x3F00 +#define TXOFFSET 8 + +void prom_putchar(char c) +{ + unsigned long flags; + + local_irq_save(flags); + do { } while ((ltq_r32(LTQ_ASC_FSTAT) & TXMASK) >> TXOFFSET); + if (c == '\n') + ltq_w8('\r', LTQ_ASC_TBUF); + ltq_w8(c, LTQ_ASC_TBUF); + local_irq_restore(flags); +} -- cgit v1.2.3