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;
48 mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
50 static char pci_irq_table[][4] =
52 * PCI IDSEL/INTPIN->INTLINE
56 {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x11 */
57 {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x12 */
58 {PIRQD, PIRQA, PIRQB, PIRQC}, /* idsel 0x13 */
60 {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x15 */
61 {PIRQD, PIRQA, PIRQB, PIRQC}, /* idsel 0x16 */
62 {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x17 */
63 {PIRQB, PIRQC, PIRQD, PIRQA}, /* idsel 0x18 */
64 {0, 0, 0, 0}, /* idsel 0x19 */
65 {0, 0, 0, 0}, /* idsel 0x20 */
68 const long min_idsel = 0x11, max_idsel = 0x20, irqs_per_slot = 4;
69 return PCI_IRQ_TABLE_LOOKUP;
71 #endif /* CONFIG_PCI */
73 /* ************************************************************************
75 * Setup the architecture
78 static void __init mpc834x_sys_setup_arch(void)
80 struct device_node *np;
83 ppc_md.progress("mpc834x_sys_setup_arch()", 0);
85 np = of_find_node_by_type(NULL, "cpu");
88 (int *)get_property(np, "clock-frequency", NULL);
90 loops_per_jiffy = *fp / HZ;
92 loops_per_jiffy = 50000000 / HZ;
96 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
99 ppc_md.pci_swizzle = common_swizzle;
100 ppc_md.pci_map_irq = mpc83xx_map_irq;
101 ppc_md.pci_exclude_device = mpc83xx_exclude_device;
104 #ifdef CONFIG_ROOT_NFS
107 ROOT_DEV = Root_HDA1;
111 void __init mpc834x_sys_init_IRQ(void)
115 IRQ_SENSE_LEVEL, /* EXT 1 */
116 IRQ_SENSE_LEVEL, /* EXT 2 */
119 IRQ_SENSE_LEVEL, /* EXT 4 */
120 IRQ_SENSE_LEVEL, /* EXT 5 */
121 IRQ_SENSE_LEVEL, /* EXT 6 */
122 IRQ_SENSE_LEVEL, /* EXT 7 */
131 ipic_init(get_immrbase() + 0x00700, 0, 0, senses, 8);
133 /* Initialize the default interrupt mapping priorities,
134 * in case the boot rom changed something on us.
136 ipic_set_default_priority();
139 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
140 extern ulong ds1374_get_rtc_time(void);
141 extern int ds1374_set_rtc_time(ulong);
143 static int __init mpc834x_rtc_hookup(void)
147 ppc_md.get_rtc_time = ds1374_get_rtc_time;
148 ppc_md.set_rtc_time = ds1374_set_rtc_time;
151 tv.tv_sec = (ppc_md.get_rtc_time) ();
152 do_settimeofday(&tv);
157 late_initcall(mpc834x_rtc_hookup);
161 * Called very early, MMU is off, device-tree isn't unflattened
163 static int __init mpc834x_sys_probe(void)
165 /* We always match for now, eventually we should look at the flat
166 dev tree to ensure this is the board we are suppose to run on
171 define_machine(mpc834x_sys) {
172 .name = "MPC834x SYS",
173 .probe = mpc834x_sys_probe,
174 .setup_arch = mpc834x_sys_setup_arch,
175 .init_IRQ = mpc834x_sys_init_IRQ,
176 .get_irq = ipic_get_irq,
177 .restart = mpc83xx_restart,
178 .time_init = mpc83xx_time_init,
179 .calibrate_decr = generic_calibrate_decr,
180 .progress = udbg_progress,