Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 1 | /* |
| 2 | * MPC82xx setup and early boot code plus other random bits. |
| 3 | * |
| 4 | * Author: Vitaly Bordug <vbordug@ru.mvista.com> |
| 5 | * |
| 6 | * Copyright (c) 2006 MontaVista Software, Inc. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 14 | #include <linux/stddef.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/errno.h> |
| 18 | #include <linux/reboot.h> |
| 19 | #include <linux/pci.h> |
| 20 | #include <linux/interrupt.h> |
| 21 | #include <linux/kdev_t.h> |
| 22 | #include <linux/major.h> |
| 23 | #include <linux/console.h> |
| 24 | #include <linux/delay.h> |
| 25 | #include <linux/seq_file.h> |
| 26 | #include <linux/root_dev.h> |
| 27 | #include <linux/initrd.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/fsl_devices.h> |
| 30 | #include <linux/fs_uart_pd.h> |
| 31 | |
| 32 | #include <asm/system.h> |
| 33 | #include <asm/pgtable.h> |
| 34 | #include <asm/page.h> |
| 35 | #include <asm/atomic.h> |
| 36 | #include <asm/time.h> |
| 37 | #include <asm/io.h> |
| 38 | #include <asm/machdep.h> |
| 39 | #include <asm/bootinfo.h> |
| 40 | #include <asm/pci-bridge.h> |
| 41 | #include <asm/mpc8260.h> |
| 42 | #include <asm/irq.h> |
| 43 | #include <mm/mmu_decl.h> |
| 44 | #include <asm/prom.h> |
| 45 | #include <asm/cpm2.h> |
| 46 | #include <asm/udbg.h> |
| 47 | #include <asm/i8259.h> |
| 48 | #include <linux/fs_enet_pd.h> |
| 49 | |
| 50 | #include <sysdev/fsl_soc.h> |
| 51 | #include <sysdev/cpm2_pic.h> |
| 52 | |
Vitaly Bordug | 5427828 | 2007-01-31 02:09:00 +0300 | [diff] [blame] | 53 | #include "pq2ads.h" |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 54 | |
| 55 | static int __init get_freq(char *name, unsigned long *val) |
| 56 | { |
| 57 | struct device_node *cpu; |
| 58 | unsigned int *fp; |
| 59 | int found = 0; |
| 60 | |
| 61 | /* The cpu node should have timebase and clock frequency properties */ |
| 62 | cpu = of_find_node_by_type(NULL, "cpu"); |
| 63 | |
| 64 | if (cpu) { |
| 65 | fp = (unsigned int *)get_property(cpu, name, NULL); |
| 66 | if (fp) { |
| 67 | found = 1; |
| 68 | *val = *fp++; |
| 69 | } |
| 70 | |
| 71 | of_node_put(cpu); |
| 72 | } |
| 73 | |
| 74 | return found; |
| 75 | } |
| 76 | |
| 77 | void __init m82xx_calibrate_decr(void) |
| 78 | { |
| 79 | ppc_tb_freq = 125000000; |
| 80 | if (!get_freq("bus-frequency", &ppc_tb_freq)) { |
| 81 | printk(KERN_ERR "WARNING: Estimating decrementer frequency " |
| 82 | "(not found)\n"); |
| 83 | } |
| 84 | ppc_tb_freq /= 4; |
| 85 | ppc_proc_freq = 1000000000; |
| 86 | if (!get_freq("clock-frequency", &ppc_proc_freq)) |
| 87 | printk(KERN_ERR "WARNING: Estimating processor frequency" |
| 88 | "(not found)\n"); |
| 89 | } |
| 90 | |
| 91 | void mpc82xx_ads_show_cpuinfo(struct seq_file *m) |
| 92 | { |
| 93 | uint pvid, svid, phid1; |
| 94 | uint memsize = total_memory; |
| 95 | |
| 96 | pvid = mfspr(SPRN_PVR); |
| 97 | svid = mfspr(SPRN_SVR); |
| 98 | |
| 99 | seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); |
| 100 | seq_printf(m, "Machine\t\t: %s\n", CPUINFO_MACHINE); |
| 101 | seq_printf(m, "PVR\t\t: 0x%x\n", pvid); |
| 102 | seq_printf(m, "SVR\t\t: 0x%x\n", svid); |
| 103 | |
| 104 | /* Display cpu Pll setting */ |
| 105 | phid1 = mfspr(SPRN_HID1); |
| 106 | seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); |
| 107 | |
| 108 | /* Display the amount of memory */ |
| 109 | seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024)); |
| 110 | } |