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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2008 Emcraft Systems
   4  * Sergei Poselenov <sposelenov@emcraft.com>
   5  *
   6  * Based on MPC8560 ADS and arch/ppc tqm85xx ports
   7  *
   8  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   9  *
  10  * Copyright 2008 Freescale Semiconductor Inc.
  11  *
  12  * Copyright (c) 2005-2006 DENX Software Engineering
  13  * Stefan Roese <sr@denx.de>
  14  *
  15  * Based on original work by
  16  *      Kumar Gala <kumar.gala@freescale.com>
  17  *      Copyright 2004 Freescale Semiconductor Inc.
  18  */
  19
  20 #include <linux/stddef.h>
  21 #include <linux/kernel.h>
  22 #include <linux/pci.h>
  23 #include <linux/kdev_t.h>
  24 #include <linux/delay.h>
  25 #include <linux/seq_file.h>
  26 #include <linux/of_platform.h>
  27
  28 #include <asm/time.h>
  29 #include <asm/machdep.h>
  30 #include <asm/pci-bridge.h>
  31 #include <asm/mpic.h>
  32 #include <asm/prom.h>
  33 #include <mm/mmu_decl.h>
  34 #include <asm/udbg.h>
  35
  36 #include <sysdev/fsl_soc.h>
  37 #include <sysdev/fsl_pci.h>
  38
  39 #include "mpc85xx.h"
  40 #include "socrates_fpga_pic.h"
  41
  42 static void __init socrates_pic_init(void)
  43 {
  44         struct device_node *np;
  45
  46         struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
  47                         0, 256, " OpenPIC  ");
  48         BUG_ON(mpic == NULL);
  49         mpic_init(mpic);
  50
  51         np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic");
  52         if (!np) {
  53                 printk(KERN_ERR "Could not find socrates-fpga-pic node\n");
  54                 return;
  55         }
  56         socrates_fpga_pic_init(np);
  57         of_node_put(np);
  58 }
  59
  60 /*
  61  * Setup the architecture
  62  */
  63 static void __init socrates_setup_arch(void)
  64 {
  65         if (ppc_md.progress)
  66                 ppc_md.progress("socrates_setup_arch()", 0);
  67
  68         fsl_pci_assign_primary();
  69 }
  70
  71 machine_arch_initcall(socrates, mpc85xx_common_publish_devices);
  72
  73 /*
  74  * Called very early, device-tree isn't unflattened
  75  */
  76 static int __init socrates_probe(void)
  77 {
  78         if (of_machine_is_compatible("abb,socrates"))
  79                 return 1;
  80
  81         return 0;
  82 }
  83
  84 define_machine(socrates) {
  85         .name                   = "Socrates",
  86         .probe                  = socrates_probe,
  87         .setup_arch             = socrates_setup_arch,
  88         .init_IRQ               = socrates_pic_init,
  89         .get_irq                = mpic_get_irq,
  90         .calibrate_decr         = generic_calibrate_decr,
  91         .progress               = udbg_progress,
  92 };