// SPDX-License-Identifier: GPL-2.0-only | |
/* | |
* | |
* Copyright (C) 2010 John Crispin <john@phrozen.org> | |
*/ | |
#include <linux/cpu.h> | |
#include <lantiq_soc.h> | |
#include <asm/setup.h> | |
#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); | |
} |