You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
2.7 KiB
110 lines
2.7 KiB
/*
|
|
* MPC82xx setup and early boot code plus other random bits.
|
|
*
|
|
* Author: Vitaly Bordug <vbordug@ru.mvista.com>
|
|
*
|
|
* Copyright (c) 2006 MontaVista Software, Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kdev_t.h>
|
|
#include <linux/major.h>
|
|
#include <linux/console.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/root_dev.h>
|
|
#include <linux/initrd.h>
|
|
#include <linux/module.h>
|
|
#include <linux/fsl_devices.h>
|
|
#include <linux/fs_uart_pd.h>
|
|
|
|
#include <asm/system.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/page.h>
|
|
#include <asm/atomic.h>
|
|
#include <asm/time.h>
|
|
#include <asm/io.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/pci-bridge.h>
|
|
#include <asm/mpc8260.h>
|
|
#include <asm/irq.h>
|
|
#include <mm/mmu_decl.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/cpm2.h>
|
|
#include <asm/udbg.h>
|
|
#include <asm/i8259.h>
|
|
#include <linux/fs_enet_pd.h>
|
|
|
|
#include <sysdev/fsl_soc.h>
|
|
#include <sysdev/cpm2_pic.h>
|
|
|
|
#include "pq2ads.h"
|
|
|
|
static int __init get_freq(char *name, unsigned long *val)
|
|
{
|
|
struct device_node *cpu;
|
|
const unsigned int *fp;
|
|
int found = 0;
|
|
|
|
/* The cpu node should have timebase and clock frequency properties */
|
|
cpu = of_find_node_by_type(NULL, "cpu");
|
|
|
|
if (cpu) {
|
|
fp = of_get_property(cpu, name, NULL);
|
|
if (fp) {
|
|
found = 1;
|
|
*val = *fp;
|
|
}
|
|
|
|
of_node_put(cpu);
|
|
}
|
|
|
|
return found;
|
|
}
|
|
|
|
void __init m82xx_calibrate_decr(void)
|
|
{
|
|
ppc_tb_freq = 125000000;
|
|
if (!get_freq("bus-frequency", &ppc_tb_freq)) {
|
|
printk(KERN_ERR "WARNING: Estimating decrementer frequency "
|
|
"(not found)\n");
|
|
}
|
|
ppc_tb_freq /= 4;
|
|
ppc_proc_freq = 1000000000;
|
|
if (!get_freq("clock-frequency", &ppc_proc_freq))
|
|
printk(KERN_ERR "WARNING: Estimating processor frequency"
|
|
"(not found)\n");
|
|
}
|
|
|
|
void mpc82xx_ads_show_cpuinfo(struct seq_file *m)
|
|
{
|
|
uint pvid, svid, phid1;
|
|
uint memsize = total_memory;
|
|
|
|
pvid = mfspr(SPRN_PVR);
|
|
svid = mfspr(SPRN_SVR);
|
|
|
|
seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
|
|
seq_printf(m, "Machine\t\t: %s\n", CPUINFO_MACHINE);
|
|
seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
|
|
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
|
|
|
|
/* Display cpu Pll setting */
|
|
phid1 = mfspr(SPRN_HID1);
|
|
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
|
|
|
|
/* Display the amount of memory */
|
|
seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
|
|
}
|
|
|