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// 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);
}
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