Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [diff] [blame] | 1 | /* |
| 2 | * arch/powerpc/platforms/83xx/mpc834x_itx.c |
| 3 | * |
| 4 | * MPC834x ITX board specific routines |
| 5 | * |
| 6 | * Maintainer: Kumar Gala <galak@kernel.crashing.org> |
| 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 | |
Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [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/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> |
| 26 | |
| 27 | #include <asm/system.h> |
| 28 | #include <asm/atomic.h> |
| 29 | #include <asm/time.h> |
| 30 | #include <asm/io.h> |
| 31 | #include <asm/machdep.h> |
| 32 | #include <asm/ipic.h> |
| 33 | #include <asm/bootinfo.h> |
| 34 | #include <asm/irq.h> |
| 35 | #include <asm/prom.h> |
| 36 | #include <asm/udbg.h> |
| 37 | #include <sysdev/fsl_soc.h> |
| 38 | |
| 39 | #include "mpc83xx.h" |
| 40 | |
| 41 | #include <platforms/83xx/mpc834x_sys.h> |
| 42 | |
| 43 | #ifndef CONFIG_PCI |
| 44 | unsigned long isa_io_base = 0; |
| 45 | unsigned long isa_mem_base = 0; |
| 46 | #endif |
| 47 | |
Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [diff] [blame] | 48 | /* ************************************************************************ |
| 49 | * |
| 50 | * Setup the architecture |
| 51 | * |
| 52 | */ |
| 53 | static void __init mpc834x_itx_setup_arch(void) |
| 54 | { |
| 55 | struct device_node *np; |
| 56 | |
| 57 | if (ppc_md.progress) |
| 58 | ppc_md.progress("mpc834x_itx_setup_arch()", 0); |
| 59 | |
| 60 | np = of_find_node_by_type(NULL, "cpu"); |
| 61 | if (np != 0) { |
Jeremy Kerr | 8efca49 | 2006-07-12 15:39:42 +1000 | [diff] [blame] | 62 | const unsigned int *fp = |
| 63 | get_property(np, "clock-frequency", NULL); |
Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [diff] [blame] | 64 | if (fp != 0) |
| 65 | loops_per_jiffy = *fp / HZ; |
| 66 | else |
| 67 | loops_per_jiffy = 50000000 / HZ; |
| 68 | of_node_put(np); |
| 69 | } |
| 70 | #ifdef CONFIG_PCI |
| 71 | for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) |
| 72 | add_bridge(np); |
| 73 | |
Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [diff] [blame] | 74 | ppc_md.pci_exclude_device = mpc83xx_exclude_device; |
| 75 | #endif |
| 76 | |
| 77 | #ifdef CONFIG_ROOT_NFS |
| 78 | ROOT_DEV = Root_NFS; |
| 79 | #else |
| 80 | ROOT_DEV = Root_HDA1; |
| 81 | #endif |
| 82 | } |
| 83 | |
| 84 | void __init mpc834x_itx_init_IRQ(void) |
| 85 | { |
Kim Phillips | f1f17716 | 2006-08-25 11:59:22 -0500 | [diff] [blame] | 86 | struct device_node *np; |
Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [diff] [blame] | 87 | |
Kim Phillips | f1f17716 | 2006-08-25 11:59:22 -0500 | [diff] [blame] | 88 | np = of_find_node_by_type(NULL, "ipic"); |
| 89 | if (!np) |
| 90 | return; |
| 91 | |
| 92 | ipic_init(np, 0); |
Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [diff] [blame] | 93 | |
| 94 | /* Initialize the default interrupt mapping priorities, |
| 95 | * in case the boot rom changed something on us. |
| 96 | */ |
| 97 | ipic_set_default_priority(); |
| 98 | } |
| 99 | |
| 100 | /* |
| 101 | * Called very early, MMU is off, device-tree isn't unflattened |
| 102 | */ |
| 103 | static int __init mpc834x_itx_probe(void) |
| 104 | { |
| 105 | /* We always match for now, eventually we should look at the flat |
| 106 | dev tree to ensure this is the board we are suppose to run on |
| 107 | */ |
| 108 | return 1; |
| 109 | } |
| 110 | |
| 111 | define_machine(mpc834x_itx) { |
| 112 | .name = "MPC834x ITX", |
| 113 | .probe = mpc834x_itx_probe, |
| 114 | .setup_arch = mpc834x_itx_setup_arch, |
| 115 | .init_IRQ = mpc834x_itx_init_IRQ, |
| 116 | .get_irq = ipic_get_irq, |
| 117 | .restart = mpc83xx_restart, |
| 118 | .time_init = mpc83xx_time_init, |
| 119 | .calibrate_decr = generic_calibrate_decr, |
| 120 | .progress = udbg_progress, |
Kim Phillips | f1f17716 | 2006-08-25 11:59:22 -0500 | [diff] [blame] | 121 | #ifdef CONFIG_PCI |
| 122 | .pcibios_fixup = mpc83xx_pcibios_fixup, |
| 123 | #endif |
Kim Phillips | 0028016 | 2006-06-30 18:41:20 -0500 | [diff] [blame] | 124 | }; |