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Linux/arch/powerpc/platforms/85xx/tqm85xx.c

  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_flat_dt_match(of_get_flat_dt_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         .restart                = fsl_rstcr_restart,
136         .calibrate_decr         = generic_calibrate_decr,
137         .progress               = udbg_progress,
138 };
139 

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