forked from luck/tmp_suning_uos_patched
1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
129 lines
2.8 KiB
C
129 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2000,2001,2002,2003,2004 Broadcom Corporation
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/reboot.h>
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#include <linux/string.h>
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#include <asm/bootinfo.h>
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#include <asm/cpu.h>
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#include <asm/mipsregs.h>
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#include <asm/io.h>
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#include <asm/sibyte/sb1250.h>
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#include <asm/sibyte/bcm1480_regs.h>
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#include <asm/sibyte/bcm1480_scd.h>
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#include <asm/sibyte/sb1250_scd.h>
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unsigned int sb1_pass;
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unsigned int soc_pass;
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unsigned int soc_type;
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EXPORT_SYMBOL(soc_type);
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unsigned int periph_rev;
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EXPORT_SYMBOL_GPL(periph_rev);
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unsigned int zbbus_mhz;
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EXPORT_SYMBOL(zbbus_mhz);
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static unsigned int part_type;
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static char *soc_str;
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static char *pass_str;
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static int __init setup_bcm1x80_bcm1x55(void)
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{
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int ret = 0;
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switch (soc_pass) {
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case K_SYS_REVISION_BCM1480_S0:
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periph_rev = 1;
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pass_str = "S0 (pass1)";
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break;
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case K_SYS_REVISION_BCM1480_A1:
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periph_rev = 1;
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pass_str = "A1 (pass1)";
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break;
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case K_SYS_REVISION_BCM1480_A2:
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periph_rev = 1;
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pass_str = "A2 (pass1)";
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break;
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case K_SYS_REVISION_BCM1480_A3:
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periph_rev = 1;
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pass_str = "A3 (pass1)";
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break;
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case K_SYS_REVISION_BCM1480_B0:
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periph_rev = 1;
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pass_str = "B0 (pass2)";
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break;
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default:
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printk("Unknown %s rev %x\n", soc_str, soc_pass);
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periph_rev = 1;
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pass_str = "Unknown Revision";
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break;
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}
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return ret;
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}
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/* Setup code likely to be common to all SiByte platforms */
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static int __init sys_rev_decode(void)
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{
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int ret = 0;
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switch (soc_type) {
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case K_SYS_SOC_TYPE_BCM1x80:
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if (part_type == K_SYS_PART_BCM1480)
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soc_str = "BCM1480";
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else if (part_type == K_SYS_PART_BCM1280)
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soc_str = "BCM1280";
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else
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soc_str = "BCM1x80";
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ret = setup_bcm1x80_bcm1x55();
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break;
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case K_SYS_SOC_TYPE_BCM1x55:
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if (part_type == K_SYS_PART_BCM1455)
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soc_str = "BCM1455";
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else if (part_type == K_SYS_PART_BCM1255)
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soc_str = "BCM1255";
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else
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soc_str = "BCM1x55";
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ret = setup_bcm1x80_bcm1x55();
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break;
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default:
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printk("Unknown part type %x\n", part_type);
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ret = 1;
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break;
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}
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return ret;
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}
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void __init bcm1480_setup(void)
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{
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uint64_t sys_rev;
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int plldiv;
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sb1_pass = read_c0_prid() & PRID_REV_MASK;
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sys_rev = __raw_readq(IOADDR(A_SCD_SYSTEM_REVISION));
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soc_type = SYS_SOC_TYPE(sys_rev);
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part_type = G_SYS_PART(sys_rev);
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soc_pass = G_SYS_REVISION(sys_rev);
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if (sys_rev_decode()) {
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printk("Restart after failure to identify SiByte chip\n");
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machine_restart(NULL);
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}
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plldiv = G_BCM1480_SYS_PLL_DIV(__raw_readq(IOADDR(A_SCD_SYSTEM_CFG)));
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zbbus_mhz = ((plldiv >> 1) * 50) + ((plldiv & 1) * 25);
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printk("Broadcom SiByte %s %s @ %d MHz (SB-1A rev %d)\n",
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soc_str, pass_str, zbbus_mhz * 2, sb1_pass);
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printk("Board type: %s\n", get_system_type());
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}
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