88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
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* init.c, Common initialization routines for NEC VR4100 series.
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*
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* Copyright (C) 2003-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/irq.h>
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#include <linux/string.h>
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#include <asm/bootinfo.h>
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#include <asm/time.h>
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#include <asm/vr41xx/irq.h>
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#include <asm/vr41xx/vr41xx.h>
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#define IO_MEM_RESOURCE_START 0UL
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#define IO_MEM_RESOURCE_END 0x1fffffffUL
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static void __init iomem_resource_init(void)
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{
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iomem_resource.start = IO_MEM_RESOURCE_START;
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iomem_resource.end = IO_MEM_RESOURCE_END;
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}
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static void __init setup_timer_frequency(void)
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{
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unsigned long tclock;
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tclock = vr41xx_get_tclock_frequency();
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if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 ||
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current_cpu_data.processor_id == PRID_VR4131_REV2_1)
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mips_hpt_frequency = tclock / 2;
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else
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mips_hpt_frequency = tclock / 4;
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}
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void __init plat_timer_setup(struct irqaction *irq)
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{
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setup_irq(TIMER_IRQ, irq);
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}
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static void __init timer_init(void)
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{
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board_time_init = setup_timer_frequency;
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}
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void __init plat_mem_setup(void)
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{
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vr41xx_calculate_clock_frequency();
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timer_init();
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iomem_resource_init();
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}
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void __init prom_init(void)
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{
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int argc, i;
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char **argv;
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argc = fw_arg0;
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argv = (char **)fw_arg1;
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for (i = 1; i < argc; i++) {
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strcat(arcs_cmdline, argv[i]);
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if (i < (argc - 1))
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strcat(arcs_cmdline, " ");
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}
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}
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unsigned long __init prom_free_prom_memory (void)
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{
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return 0UL;
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}
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