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 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 #ifndef CONFIG_PCI 42 unsigned long isa_io_base = 0; 43 unsigned long isa_mem_base = 0; 44 #endif 45 46 /* ************************************************************************ 47 * 48 * Setup the architecture 49 * 50 */ 51 static void __init mpc834x_itx_setup_arch(void) 52 { 53 struct device_node *np; 54 55 if (ppc_md.progress) 56 ppc_md.progress("mpc834x_itx_setup_arch()", 0); 57 58 #ifdef CONFIG_PCI 59 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) 60 add_bridge(np); 61 62 ppc_md.pci_exclude_device = mpc83xx_exclude_device; 63 #endif 64 } 65 66 static void __init mpc834x_itx_init_IRQ(void) 67 { 68 struct device_node *np; 69 70 np = of_find_node_by_type(NULL, "ipic"); 71 if (!np) 72 return; 73 74 ipic_init(np, 0); 75 76 /* Initialize the default interrupt mapping priorities, 77 * in case the boot rom changed something on us. 78 */ 79 ipic_set_default_priority(); 80 } 81 82 /* 83 * Called very early, MMU is off, device-tree isn't unflattened 84 */ 85 static int __init mpc834x_itx_probe(void) 86 { 87 unsigned long root = of_get_flat_dt_root(); 88 89 return of_flat_dt_is_compatible(root, "MPC834xMITX"); 90 } 91 92 define_machine(mpc834x_itx) { 93 .name = "MPC834x ITX", 94 .probe = mpc834x_itx_probe, 95 .setup_arch = mpc834x_itx_setup_arch, 96 .init_IRQ = mpc834x_itx_init_IRQ, 97 .get_irq = ipic_get_irq, 98 .restart = mpc83xx_restart, 99 .time_init = mpc83xx_time_init, 100 .calibrate_decr = generic_calibrate_decr, 101 .progress = udbg_progress, 102 }; 103