171bb2f19e
Add initial support for Mips based SoCs made by Lantiq. This series will add support for the XWAY family. The series allows booting a minimal system using a initramfs or NOR. Missing drivers and support for Amazon and GPON family will be provided in a later series. [Ralf: Remove some cargo cult programming and fixed formatting.] Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Ralph Hempel <ralph.hempel@lantiq.com> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2252/ Patchwork: https://patchwork.linux-mips.org/patch/2371/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
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*/
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#include <linux/module.h>
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#include <linux/clk.h>
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#include <asm/bootinfo.h>
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#include <asm/time.h>
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#include <lantiq.h>
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#include "prom.h"
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#include "clk.h"
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static struct ltq_soc_info soc_info;
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unsigned int ltq_get_cpu_ver(void)
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{
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return soc_info.rev;
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}
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EXPORT_SYMBOL(ltq_get_cpu_ver);
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unsigned int ltq_get_soc_type(void)
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{
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return soc_info.type;
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}
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EXPORT_SYMBOL(ltq_get_soc_type);
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const char *get_system_type(void)
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{
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return soc_info.sys_type;
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}
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void prom_free_prom_memory(void)
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{
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}
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static void __init prom_init_cmdline(void)
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{
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int argc = fw_arg0;
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char **argv = (char **) KSEG1ADDR(fw_arg1);
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int i;
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for (i = 0; i < argc; i++) {
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char *p = (char *) KSEG1ADDR(argv[i]);
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if (p && *p) {
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strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
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strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
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}
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}
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}
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void __init prom_init(void)
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{
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struct clk *clk;
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ltq_soc_detect(&soc_info);
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clk_init();
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clk = clk_get(0, "cpu");
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snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev1.%d",
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soc_info.name, soc_info.rev);
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clk_put(clk);
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soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
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pr_info("SoC: %s\n", soc_info.sys_type);
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prom_init_cmdline();
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}
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