1 /* 2 * Based on MPC8560 ADS and arch/ppc tqm85xx ports 3 * 4 * Maintained by Kumar Gala (see MAINTAINERS for contact information) 5 * 6 * Copyright 2008 Freescale Semiconductor Inc. 7 * 8 * Copyright (c) 2005-2006 DENX Software Engineering 9 * Stefan Roese <sr@denx.de> 10 * 11 * Based on original work by 12 * Kumar Gala <kumar.gala@freescale.com> 13 * Copyright 2004 Freescale Semiconductor Inc. 14 * 15 * This program is free software; you can redistribute it and/or modify it 16 * under the terms of the GNU General Public License as published by the 17 * Free Software Foundation; either version 2 of the License, or (at your 18 * option) any later version. 19 */ 20 21 #include <linux/stddef.h> 22 #include <linux/kernel.h> 23 #include <linux/pci.h> 24 #include <linux/kdev_t.h> 25 #include <linux/delay.h> 26 #include <linux/seq_file.h> 27 #include <linux/of_platform.h> 28 29 #include <asm/system.h> 30 #include <asm/time.h> 31 #include <asm/machdep.h> 32 #include <asm/pci-bridge.h> 33 #include <asm/mpic.h> 34 #include <asm/prom.h> 35 #include <mm/mmu_decl.h> 36 #include <asm/udbg.h> 37 38 #include <sysdev/fsl_soc.h> 39 #include <sysdev/fsl_pci.h> 40 41 #include "mpc85xx.h" 42 43 #ifdef CONFIG_CPM2 44 #include <asm/cpm2.h> 45 #endif /* CONFIG_CPM2 */ 46 47 static void __init tqm85xx_pic_init(void) 48 { 49 struct mpic *mpic = mpic_alloc(NULL, 0, 50 MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 51 0, 256, " OpenPIC "); 52 BUG_ON(mpic == NULL); 53 mpic_init(mpic); 54 55 mpc85xx_cpm2_pic_init(); 56 } 57 58 /* 59 * Setup the architecture 60 */ 61 static void __init tqm85xx_setup_arch(void) 62 { 63 #ifdef CONFIG_PCI 64 struct device_node *np; 65 #endif 66 67 if (ppc_md.progress) 68 ppc_md.progress("tqm85xx_setup_arch()", 0); 69 70 #ifdef CONFIG_CPM2 71 cpm2_reset(); 72 #endif 73 74 #ifdef CONFIG_PCI 75 for_each_node_by_type(np, "pci") { 76 if (of_device_is_compatible(np, "fsl,mpc8540-pci") || 77 of_device_is_compatible(np, "fsl,mpc8548-pcie")) { 78 struct resource rsrc; 79 if (!of_address_to_resource(np, 0, &rsrc)) { 80 if ((rsrc.start & 0xfffff) == 0x8000) 81 fsl_add_bridge(np, 1); 82 else 83 fsl_add_bridge(np, 0); 84 } 85 } 86 } 87 #endif 88 } 89 90 static void tqm85xx_show_cpuinfo(struct seq_file *m) 91 { 92 uint pvid, svid, phid1; 93 94 pvid = mfspr(SPRN_PVR); 95 svid = mfspr(SPRN_SVR); 96 97 seq_printf(m, "Vendor\t\t: TQ Components\n"); 98 seq_printf(m, "PVR\t\t: 0x%x\n", pvid); 99 seq_printf(m, "SVR\t\t: 0x%x\n", svid); 100 101 /* Display cpu Pll setting */ 102 phid1 = mfspr(SPRN_HID1); 103 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); 104 } 105 106 static void __init tqm85xx_ti1520_fixup(struct pci_dev *pdev) 107 { 108 unsigned int val; 109 110 /* Do not do the fixup on other platforms! */ 111 if (!machine_is(tqm85xx)) 112 return; 113 114 dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n"); 115 116 /* 117 * Enable P2CCLK bit in system control register 118 * to enable CLOCK output to power chip 119 */ 120 pci_read_config_dword(pdev, 0x80, &val); 121 pci_write_config_dword(pdev, 0x80, val | (1 << 27)); 122 123 } 124 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, 125 tqm85xx_ti1520_fixup); 126 127 machine_device_initcall(tqm85xx, mpc85xx_common_publish_devices); 128 129 static const char *board[] __initdata = { 130 "tqc,tqm8540", 131 "tqc,tqm8541", 132 "tqc,tqm8548", 133 "tqc,tqm8555", 134 "tqc,tqm8560", 135 NULL 136 }; 137 138 /* 139 * Called very early, device-tree isn't unflattened 140 */ 141 static int __init tqm85xx_probe(void) 142 { 143 return of_flat_dt_match(of_get_flat_dt_root(), board); 144 } 145 146 define_machine(tqm85xx) { 147 .name = "TQM85xx", 148 .probe = tqm85xx_probe, 149 .setup_arch = tqm85xx_setup_arch, 150 .init_IRQ = tqm85xx_pic_init, 151 .show_cpuinfo = tqm85xx_show_cpuinfo, 152 .get_irq = mpic_get_irq, 153 .restart = fsl_rstcr_restart, 154 .calibrate_decr = generic_calibrate_decr, 155 .progress = udbg_progress, 156 }; 157