mirror of https://gitee.com/openkylin/linux.git
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* init.c, Common initialization routines for NEC VR4100 series.
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*
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* Copyright (C) 2003-2009 Yoichi Yuasa <yuasa@linux-mips.org>
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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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void __init plat_time_init(void)
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{
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unsigned long tclock;
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vr41xx_calculate_clock_frequency();
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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_mem_setup(void)
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{
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iomem_resource_init();
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vr41xx_siu_setup();
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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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strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
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if (i < (argc - 1))
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strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
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}
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}
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