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arch/mips/lantiq/early_printk.c
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171bb2f19 MIPS: Lantiq: Add... |
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/* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. * * Copyright (C) 2010 John Crispin <blogic@openwrt.org> */ #include <linux/init.h> #include <linux/cpu.h> #include <lantiq.h> #include <lantiq_soc.h> /* no ioremap possible at this early stage, lets use KSEG1 instead */ #define LTQ_ASC_BASE KSEG1ADDR(LTQ_ASC1_BASE_ADDR) #define ASC_BUF 1024 #define LTQ_ASC_FSTAT ((u32 *)(LTQ_ASC_BASE + 0x0048)) #define LTQ_ASC_TBUF ((u32 *)(LTQ_ASC_BASE + 0x0020)) #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 == ' ') ltq_w32('\r', LTQ_ASC_TBUF); ltq_w32(c, LTQ_ASC_TBUF); local_irq_restore(flags); } |