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31 lines
685 B
31 lines
685 B
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* |
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* Copyright (C) 2010 John Crispin <[email protected]> |
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*/ |
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#include <linux/cpu.h> |
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#include <lantiq_soc.h> |
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#include <asm/setup.h> |
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#define ASC_BUF 1024 |
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#define LTQ_ASC_FSTAT ((u32 *)(LTQ_EARLY_ASC + 0x0048)) |
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#ifdef __BIG_ENDIAN |
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#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020 + 3)) |
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#else |
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#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020)) |
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#endif |
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#define TXMASK 0x3F00 |
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#define TXOFFSET 8 |
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void prom_putchar(char c) |
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{ |
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unsigned long flags; |
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local_irq_save(flags); |
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do { } while ((ltq_r32(LTQ_ASC_FSTAT) & TXMASK) >> TXOFFSET); |
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if (c == '\n') |
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ltq_w8('\r', LTQ_ASC_TBUF); |
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ltq_w8(c, LTQ_ASC_TBUF); |
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local_irq_restore(flags); |
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}
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