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/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>
43 unsigned long isa_io_base = 0;
44 unsigned long isa_mem_base = 0;
49 mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
51 static char pci_irq_table[][4] =
53 * PCI IDSEL/INTPIN->INTLINE
57 {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x11 */
58 {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x12 */
59 {PIRQD, PIRQA, PIRQB, PIRQC}, /* idsel 0x13 */
61 {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x15 */
62 {PIRQD, PIRQA, PIRQB, PIRQC}, /* idsel 0x16 */
63 {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x17 */
64 {PIRQB, PIRQC, PIRQD, PIRQA}, /* idsel 0x18 */
65 {0, 0, 0, 0}, /* idsel 0x19 */
66 {0, 0, 0, 0}, /* idsel 0x20 */
69 const long min_idsel = 0x11, max_idsel = 0x20, irqs_per_slot = 4;
70 return PCI_IRQ_TABLE_LOOKUP;
72 #endif /* CONFIG_PCI */
74 /* ************************************************************************
76 * Setup the architecture
79 static void __init mpc834x_sys_setup_arch(void)
81 struct device_node *np;
84 ppc_md.progress("mpc834x_sys_setup_arch()", 0);
86 np = of_find_node_by_type(NULL, "cpu");
89 (int *)get_property(np, "clock-frequency", NULL);
91 loops_per_jiffy = *fp / HZ;
93 loops_per_jiffy = 50000000 / HZ;
97 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
100 ppc_md.pci_swizzle = common_swizzle;
101 ppc_md.pci_map_irq = mpc83xx_map_irq;
102 ppc_md.pci_exclude_device = mpc83xx_exclude_device;
105 #ifdef CONFIG_ROOT_NFS
108 ROOT_DEV = Root_HDA1;
112 void __init mpc834x_sys_init_IRQ(void)
116 IRQ_SENSE_LEVEL, /* EXT 1 */
117 IRQ_SENSE_LEVEL, /* EXT 2 */
120 IRQ_SENSE_LEVEL, /* EXT 4 */
121 IRQ_SENSE_LEVEL, /* EXT 5 */
122 IRQ_SENSE_LEVEL, /* EXT 6 */
123 IRQ_SENSE_LEVEL, /* EXT 7 */
132 ipic_init(get_immrbase() + 0x00700, 0, 0, senses, 8);
134 /* Initialize the default interrupt mapping priorities,
135 * in case the boot rom changed something on us.
137 ipic_set_default_priority();
140 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
141 extern ulong ds1374_get_rtc_time(void);
142 extern int ds1374_set_rtc_time(ulong);
144 static int __init mpc834x_rtc_hookup(void)
148 ppc_md.get_rtc_time = ds1374_get_rtc_time;
149 ppc_md.set_rtc_time = ds1374_set_rtc_time;
152 tv.tv_sec = (ppc_md.get_rtc_time) ();
153 do_settimeofday(&tv);
158 late_initcall(mpc834x_rtc_hookup);
161 void __init platform_init(void)
163 /* setup the PowerPC module struct */
164 ppc_md.setup_arch = mpc834x_sys_setup_arch;
166 ppc_md.init_IRQ = mpc834x_sys_init_IRQ;
167 ppc_md.get_irq = ipic_get_irq;
169 ppc_md.restart = mpc83xx_restart;
171 ppc_md.time_init = mpc83xx_time_init;
172 ppc_md.set_rtc_time = NULL;
173 ppc_md.get_rtc_time = NULL;
174 ppc_md.calibrate_decr = generic_calibrate_decr;
176 ppc_md.progress = udbg_progress;
179 ppc_md.progress("mpc834x_sys_init(): exit", 0);