arch/powerpc/platforms/85xx/stx_gp3.c

   1 /*
   2  * Based on MPC8560 ADS and arch/ppc stx_gp3 ports
   3  *
   4  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   5  *
   6  * Copyright 2008 Freescale Semiconductor Inc.
   7  *
   8  * Dan Malek <dan@embeddededge.com>
   9  * Copyright 2004 Embedded Edge, LLC
  10  *
  11  * Copied from mpc8560_ads.c
  12  * Copyright 2002, 2003 Motorola Inc.
  13  *
  14  * Ported to 2.6, Matt Porter <mporter@kernel.crashing.org>
  15  * Copyright 2004-2005 MontaVista Software, Inc.
  16  *
  17  * This program is free software; you can redistribute  it and/or modify it
  18  * under  the terms of  the GNU General  Public License as published by the
  19  * Free Software Foundation;  either version 2 of the  License, or (at your
  20  * option) any later version.
  21  */
  22
  23 #include <linux/stddef.h>
  24 #include <linux/kernel.h>
  25 #include <linux/pci.h>
  26 #include <linux/kdev_t.h>
  27 #include <linux/delay.h>
  28 #include <linux/seq_file.h>
  29 #include <linux/of_platform.h>
  30
  31 #include <asm/system.h>
  32 #include <asm/time.h>
  33 #include <asm/machdep.h>
  34 #include <asm/pci-bridge.h>
  35 #include <asm/mpic.h>
  36 #include <asm/prom.h>
  37 #include <mm/mmu_decl.h>
  38 #include <asm/udbg.h>
  39
  40 #include <sysdev/fsl_soc.h>
  41 #include <sysdev/fsl_pci.h>
  42
  43 #include "mpc85xx.h"
  44
  45 #ifdef CONFIG_CPM2
  46 #include <asm/cpm2.h>
  47 #endif /* CONFIG_CPM2 */
  48
  49 static void __init stx_gp3_pic_init(void)
  50 {
  51         struct mpic *mpic;
  52         struct resource r;
  53         struct device_node *np;
  54
  55         np = of_find_node_by_type(NULL, "open-pic");
  56         if (!np) {
  57                 printk(KERN_ERR "Could not find open-pic node\n");
  58                 return;
  59         }
  60
  61         if (of_address_to_resource(np, 0, &r)) {
  62                 printk(KERN_ERR "Could not map mpic register space\n");
  63                 of_node_put(np);
  64                 return;
  65         }
  66
  67         mpic = mpic_alloc(np, r.start,
  68                         MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
  69                         0, 256, " OpenPIC  ");
  70         BUG_ON(mpic == NULL);
  71         of_node_put(np);
  72
  73         mpic_init(mpic);
  74
  75         mpc85xx_cpm2_pic_init();
  76 }
  77
  78 /*
  79  * Setup the architecture
  80  */
  81 static void __init stx_gp3_setup_arch(void)
  82 {
  83 #ifdef CONFIG_PCI
  84         struct device_node *np;
  85 #endif
  86
  87         if (ppc_md.progress)
  88                 ppc_md.progress("stx_gp3_setup_arch()", 0);
  89
  90 #ifdef CONFIG_CPM2
  91         cpm2_reset();
  92 #endif
  93
  94 #ifdef CONFIG_PCI
  95         for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
  96                 fsl_add_bridge(np, 1);
  97 #endif
  98 }
  99
 100 static void stx_gp3_show_cpuinfo(struct seq_file *m)
 101 {
 102         uint pvid, svid, phid1;
 103
 104         pvid = mfspr(SPRN_PVR);
 105         svid = mfspr(SPRN_SVR);
 106
 107         seq_printf(m, "Vendor\t\t: RPC Electronics STx\n");
 108         seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
 109         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
 110
 111         /* Display cpu Pll setting */
 112         phid1 = mfspr(SPRN_HID1);
 113         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
 114 }
 115
 116 machine_device_initcall(stx_gp3, mpc85xx_common_publish_devices);
 117
 118 /*
 119  * Called very early, device-tree isn't unflattened
 120  */
 121 static int __init stx_gp3_probe(void)
 122 {
 123         unsigned long root = of_get_flat_dt_root();
 124
 125         return of_flat_dt_is_compatible(root, "stx,gp3-8560");
 126 }
 127
 128 define_machine(stx_gp3) {
 129         .name                   = "STX GP3",
 130         .probe                  = stx_gp3_probe,
 131         .setup_arch             = stx_gp3_setup_arch,
 132         .init_IRQ               = stx_gp3_pic_init,
 133         .show_cpuinfo           = stx_gp3_show_cpuinfo,
 134         .get_irq                = mpic_get_irq,
 135         .restart                = fsl_rstcr_restart,
 136         .calibrate_decr         = generic_calibrate_decr,
 137         .progress               = udbg_progress,
 138 };