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/time.h>
  32 #include <asm/machdep.h>
  33 #include <asm/pci-bridge.h>
  34 #include <asm/mpic.h>
  35 #include <asm/prom.h>
  36 #include <mm/mmu_decl.h>
  37 #include <asm/udbg.h>
  38
  39 #include <sysdev/fsl_soc.h>
  40 #include <sysdev/fsl_pci.h>
  41
  42 #include "mpc85xx.h"
  43
  44 #ifdef CONFIG_CPM2
  45 #include <asm/cpm2.h>
  46 #endif /* CONFIG_CPM2 */
  47
  48 static void __init stx_gp3_pic_init(void)
  49 {
  50         struct mpic *mpic = mpic_alloc(NULL, 0, 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 stx_gp3_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("stx_gp3_setup_arch()", 0);
  69
  70 #ifdef CONFIG_CPM2
  71         cpm2_reset();
  72 #endif
  73
  74 #ifdef CONFIG_PCI
  75         for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
  76                 fsl_add_bridge(np, 1);
  77 #endif
  78 }
  79
  80 static void stx_gp3_show_cpuinfo(struct seq_file *m)
  81 {
  82         uint pvid, svid, phid1;
  83
  84         pvid = mfspr(SPRN_PVR);
  85         svid = mfspr(SPRN_SVR);
  86
  87         seq_printf(m, "Vendor\t\t: RPC Electronics STx\n");
  88         seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
  89         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
  90
  91         /* Display cpu Pll setting */
  92         phid1 = mfspr(SPRN_HID1);
  93         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
  94 }
  95
  96 machine_device_initcall(stx_gp3, mpc85xx_common_publish_devices);
  97
  98 /*
  99  * Called very early, device-tree isn't unflattened
 100  */
 101 static int __init stx_gp3_probe(void)
 102 {
 103         unsigned long root = of_get_flat_dt_root();
 104
 105         return of_flat_dt_is_compatible(root, "stx,gp3-8560");
 106 }
 107
 108 define_machine(stx_gp3) {
 109         .name                   = "STX GP3",
 110         .probe                  = stx_gp3_probe,
 111         .setup_arch             = stx_gp3_setup_arch,
 112         .init_IRQ               = stx_gp3_pic_init,
 113         .show_cpuinfo           = stx_gp3_show_cpuinfo,
 114         .get_irq                = mpic_get_irq,
 115         .restart                = fsl_rstcr_restart,
 116         .calibrate_decr         = generic_calibrate_decr,
 117         .progress               = udbg_progress,
 118 };