111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/*
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* MPC82xx setup and early boot code plus other random bits.
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*
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* Author: Vitaly Bordug <vbordug@ru.mvista.com>
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*
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* Copyright (c) 2006 MontaVista Software, Inc.
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*
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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 as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/reboot.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/initrd.h>
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#include <linux/module.h>
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#include <linux/fsl_devices.h>
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#include <linux/fs_uart_pd.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/atomic.h>
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#include <asm/time.h>
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#include <asm/io.h>
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#include <asm/machdep.h>
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#include <asm/bootinfo.h>
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#include <asm/pci-bridge.h>
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#include <asm/mpc8260.h>
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#include <asm/irq.h>
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#include <mm/mmu_decl.h>
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#include <asm/prom.h>
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#include <asm/cpm2.h>
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#include <asm/udbg.h>
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#include <asm/i8259.h>
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#include <linux/fs_enet_pd.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/cpm2_pic.h>
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#include "pq2ads.h"
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static int __init get_freq(char *name, unsigned long *val)
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{
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struct device_node *cpu;
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unsigned int *fp;
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int found = 0;
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/* The cpu node should have timebase and clock frequency properties */
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cpu = of_find_node_by_type(NULL, "cpu");
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if (cpu) {
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fp = (unsigned int *)get_property(cpu, name, NULL);
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if (fp) {
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found = 1;
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*val = *fp++;
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}
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of_node_put(cpu);
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}
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return found;
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}
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void __init m82xx_calibrate_decr(void)
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{
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ppc_tb_freq = 125000000;
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if (!get_freq("bus-frequency", &ppc_tb_freq)) {
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printk(KERN_ERR "WARNING: Estimating decrementer frequency "
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"(not found)\n");
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}
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ppc_tb_freq /= 4;
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ppc_proc_freq = 1000000000;
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if (!get_freq("clock-frequency", &ppc_proc_freq))
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printk(KERN_ERR "WARNING: Estimating processor frequency"
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"(not found)\n");
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}
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void mpc82xx_ads_show_cpuinfo(struct seq_file *m)
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{
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uint pvid, svid, phid1;
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uint memsize = total_memory;
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pvid = mfspr(SPRN_PVR);
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svid = mfspr(SPRN_SVR);
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seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
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seq_printf(m, "Machine\t\t: %s\n", CPUINFO_MACHINE);
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seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
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seq_printf(m, "SVR\t\t: 0x%x\n", svid);
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/* Display cpu Pll setting */
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phid1 = mfspr(SPRN_HID1);
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seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
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/* Display the amount of memory */
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seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
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}
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