2 * arch/powerpc/platforms/83xx/mpc834x_sys.c
4 * MPC834x SYS board specific routines
6 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
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.
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/kdev_t.h>
21 #include <linux/major.h>
22 #include <linux/console.h>
23 #include <linux/delay.h>
24 #include <linux/seq_file.h>
25 #include <linux/root_dev.h>
27 #include <asm/system.h>
28 #include <asm/atomic.h>
31 #include <asm/machdep.h>
33 #include <asm/bootinfo.h>
37 #include <sysdev/fsl_soc.h>
42 unsigned long isa_io_base = 0;
43 unsigned long isa_mem_base = 0;
46 /* ************************************************************************
48 * Setup the architecture
51 static void __init mpc834x_sys_setup_arch(void)
53 struct device_node *np;
56 ppc_md.progress("mpc834x_sys_setup_arch()", 0);
58 np = of_find_node_by_type(NULL, "cpu");
60 const unsigned int *fp =
61 get_property(np, "clock-frequency", NULL);
63 loops_per_jiffy = *fp / HZ;
65 loops_per_jiffy = 50000000 / HZ;
69 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
72 ppc_md.pci_exclude_device = mpc83xx_exclude_device;
75 #ifdef CONFIG_ROOT_NFS
82 void __init mpc834x_sys_init_IRQ(void)
84 struct device_node *np;
86 np = of_find_node_by_type(NULL, "ipic");
92 /* Initialize the default interrupt mapping priorities,
93 * in case the boot rom changed something on us.
95 ipic_set_default_priority();
98 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
99 extern ulong ds1374_get_rtc_time(void);
100 extern int ds1374_set_rtc_time(ulong);
102 static int __init mpc834x_rtc_hookup(void)
106 ppc_md.get_rtc_time = ds1374_get_rtc_time;
107 ppc_md.set_rtc_time = ds1374_set_rtc_time;
110 tv.tv_sec = (ppc_md.get_rtc_time) ();
111 do_settimeofday(&tv);
116 late_initcall(mpc834x_rtc_hookup);
120 * Called very early, MMU is off, device-tree isn't unflattened
122 static int __init mpc834x_sys_probe(void)
124 /* We always match for now, eventually we should look at the flat
125 dev tree to ensure this is the board we are suppose to run on
130 define_machine(mpc834x_sys) {
131 .name = "MPC834x SYS",
132 .probe = mpc834x_sys_probe,
133 .setup_arch = mpc834x_sys_setup_arch,
134 .init_IRQ = mpc834x_sys_init_IRQ,
135 .get_irq = ipic_get_irq,
136 .restart = mpc83xx_restart,
137 .time_init = mpc83xx_time_init,
138 .calibrate_decr = generic_calibrate_decr,
139 .progress = udbg_progress,