2 * arch/powerpc/platforms/83xx/mpc834x_itx.c
4 * MPC834x ITX 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/config.h>
15 #include <linux/stddef.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/errno.h>
19 #include <linux/reboot.h>
20 #include <linux/pci.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>
28 #include <asm/system.h>
29 #include <asm/atomic.h>
32 #include <asm/machdep.h>
34 #include <asm/bootinfo.h>
38 #include <sysdev/fsl_soc.h>
42 #include <platforms/83xx/mpc834x_sys.h>
45 unsigned long isa_io_base = 0;
46 unsigned long isa_mem_base = 0;
51 mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
53 static char pci_irq_table[][4] =
55 * PCI IDSEL/INTPIN->INTLINE
59 {PIRQB, PIRQC, PIRQD, PIRQA}, /* idsel 0x0e */
60 {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x0f */
61 {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x10 */
64 const long min_idsel = 0x0e, max_idsel = 0x10, irqs_per_slot = 4;
65 return PCI_IRQ_TABLE_LOOKUP;
67 #endif /* CONFIG_PCI */
69 /* ************************************************************************
71 * Setup the architecture
74 static void __init mpc834x_itx_setup_arch(void)
76 struct device_node *np;
79 ppc_md.progress("mpc834x_itx_setup_arch()", 0);
81 np = of_find_node_by_type(NULL, "cpu");
84 (int *)get_property(np, "clock-frequency", NULL);
86 loops_per_jiffy = *fp / HZ;
88 loops_per_jiffy = 50000000 / HZ;
92 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
95 ppc_md.pci_swizzle = common_swizzle;
96 ppc_md.pci_map_irq = mpc83xx_map_irq;
97 ppc_md.pci_exclude_device = mpc83xx_exclude_device;
100 #ifdef CONFIG_ROOT_NFS
103 ROOT_DEV = Root_HDA1;
107 void __init mpc834x_itx_init_IRQ(void)
111 IRQ_SENSE_LEVEL, /* EXT 1 */
112 IRQ_SENSE_LEVEL, /* EXT 2 */
115 IRQ_SENSE_LEVEL, /* EXT 4 */
116 IRQ_SENSE_LEVEL, /* EXT 5 */
117 IRQ_SENSE_LEVEL, /* EXT 6 */
118 IRQ_SENSE_LEVEL, /* EXT 7 */
127 ipic_init(get_immrbase() + 0x00700, 0, 0, senses, 8);
129 /* Initialize the default interrupt mapping priorities,
130 * in case the boot rom changed something on us.
132 ipic_set_default_priority();
136 * Called very early, MMU is off, device-tree isn't unflattened
138 static int __init mpc834x_itx_probe(void)
140 /* We always match for now, eventually we should look at the flat
141 dev tree to ensure this is the board we are suppose to run on
146 define_machine(mpc834x_itx) {
147 .name = "MPC834x ITX",
148 .probe = mpc834x_itx_probe,
149 .setup_arch = mpc834x_itx_setup_arch,
150 .init_IRQ = mpc834x_itx_init_IRQ,
151 .get_irq = ipic_get_irq,
152 .restart = mpc83xx_restart,
153 .time_init = mpc83xx_time_init,
154 .calibrate_decr = generic_calibrate_decr,
155 .progress = udbg_progress,