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/time.h> 30 #include <asm/machdep.h> 31 #include <asm/pci-bridge.h> 32 #include <asm/mpic.h> 33 #include <asm/prom.h> 34 #include <mm/mmu_decl.h> 35 #include <asm/udbg.h> 36 37 #include <sysdev/fsl_soc.h> 38 #include <sysdev/fsl_pci.h> 39 40 #include "mpc85xx.h" 41 42 #ifdef CONFIG_CPM2 43 #include <asm/cpm2.h> 44 #endif /* CONFIG_CPM2 */ 45 46 static void __init tqm85xx_pic_init(void) 47 { 48 struct mpic *mpic = mpic_alloc(NULL, 0, 49 MPIC_BIG_ENDIAN, 50 0, 256, " OpenPIC "); 51 BUG_ON(mpic == NULL); 52 mpic_init(mpic); 53 54 mpc85xx_cpm2_pic_init(); 55 } 56 57 /* 58 * Setup the architecture 59 */ 60 static void __init tqm85xx_setup_arch(void) 61 { 62 if (ppc_md.progress) 63 ppc_md.progress("tqm85xx_setup_arch()", 0); 64 65 #ifdef CONFIG_CPM2 66 cpm2_reset(); 67 #endif 68 69 fsl_pci_assign_primary(); 70 } 71 72 static void tqm85xx_show_cpuinfo(struct seq_file *m) 73 { 74 uint pvid, svid, phid1; 75 76 pvid = mfspr(SPRN_PVR); 77 svid = mfspr(SPRN_SVR); 78 79 seq_printf(m, "Vendor\t\t: TQ Components\n"); 80 seq_printf(m, "PVR\t\t: 0x%x\n", pvid); 81 seq_printf(m, "SVR\t\t: 0x%x\n", svid); 82 83 /* Display cpu Pll setting */ 84 phid1 = mfspr(SPRN_HID1); 85 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); 86 } 87 88 static void tqm85xx_ti1520_fixup(struct pci_dev *pdev) 89 { 90 unsigned int val; 91 92 /* Do not do the fixup on other platforms! */ 93 if (!machine_is(tqm85xx)) 94 return; 95 96 dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n"); 97 98 /* 99 * Enable P2CCLK bit in system control register 100 * to enable CLOCK output to power chip 101 */ 102 pci_read_config_dword(pdev, 0x80, &val); 103 pci_write_config_dword(pdev, 0x80, val | (1 << 27)); 104 105 } 106 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, 107 tqm85xx_ti1520_fixup); 108 109 machine_arch_initcall(tqm85xx, mpc85xx_common_publish_devices); 110 111 static const char * const board[] __initconst = { 112 "tqc,tqm8540", 113 "tqc,tqm8541", 114 "tqc,tqm8548", 115 "tqc,tqm8555", 116 "tqc,tqm8560", 117 NULL 118 }; 119 120 /* 121 * Called very early, device-tree isn't unflattened 122 */ 123 static int __init tqm85xx_probe(void) 124 { 125 return of_device_compatible_match(of_root, board); 126 } 127 128 define_machine(tqm85xx) { 129 .name = "TQM85xx", 130 .probe = tqm85xx_probe, 131 .setup_arch = tqm85xx_setup_arch, 132 .init_IRQ = tqm85xx_pic_init, 133 .show_cpuinfo = tqm85xx_show_cpuinfo, 134 .get_irq = mpic_get_irq, 135 .calibrate_decr = generic_calibrate_decr, 136 .progress = udbg_progress, 137 }; 138