1 /* 2 * Common PowerQUICC II code. 3 * 4 * Author: Scott Wood <scottwood@freescale.com> 5 * Copyright (c) 2007 Freescale Semiconductor 6 * 7 * Based on code by Vitaly Bordug <vbordug@ru.mvista.com> 8 * pq2_restart fix by Wade Farnsworth <wfarnsworth@mvista.com> 9 * Copyright (c) 2006 MontaVista Software, Inc. 10 * 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License as published by the 13 * Free Software Foundation; either version 2 of the License, or (at your 14 * option) any later version. 15 */ 16 17 #include <asm/cpm2.h> 18 #include <asm/io.h> 19 #include <asm/pci-bridge.h> 20 21 #include <platforms/82xx/pq2.h> 22 23 #define RMR_CSRE 0x00000001 24 25 void pq2_restart(char *cmd) 26 { 27 local_irq_disable(); 28 setbits32(&cpm2_immr->im_clkrst.car_rmr, RMR_CSRE); 29 30 /* Clear the ME,EE,IR & DR bits in MSR to cause checkstop */ 31 mtmsr(mfmsr() & ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR)); 32 in_8(&cpm2_immr->im_clkrst.res[0]); 33 34 panic("Restart failed\n"); 35 } 36 37 #ifdef CONFIG_PCI 38 static int pq2_pci_exclude_device(struct pci_controller *hose, 39 u_char bus, u8 devfn) 40 { 41 if (bus == 0 && PCI_SLOT(devfn) == 0) 42 return PCIBIOS_DEVICE_NOT_FOUND; 43 else 44 return PCIBIOS_SUCCESSFUL; 45 } 46 47 static void __init pq2_pci_add_bridge(struct device_node *np) 48 { 49 struct pci_controller *hose; 50 struct resource r; 51 52 if (of_address_to_resource(np, 0, &r) || r.end - r.start < 0x10b) 53 goto err; 54 55 pci_add_flags(PCI_REASSIGN_ALL_BUS); 56 57 hose = pcibios_alloc_controller(np); 58 if (!hose) 59 return; 60 61 hose->dn = np; 62 63 setup_indirect_pci(hose, r.start + 0x100, r.start + 0x104, 0); 64 pci_process_bridge_OF_ranges(hose, np, 1); 65 66 return; 67 68 err: 69 printk(KERN_ERR "No valid PCI reg property in device tree\n"); 70 } 71 72 void __init pq2_init_pci(void) 73 { 74 struct device_node *np; 75 76 ppc_md.pci_exclude_device = pq2_pci_exclude_device; 77 78 for_each_compatible_node(np, NULL, "fsl,pq2-pci") 79 pq2_pci_add_bridge(np); 80 } 81 #endif 82