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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Based on MPC8560 ADS and arch/ppc stx_gp3 ports
   4  *
   5  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   6  *
   7  * Copyright 2008 Freescale Semiconductor Inc.
   8  *
   9  * Dan Malek <dan@embeddededge.com>
  10  * Copyright 2004 Embedded Edge, LLC
  11  *
  12  * Copied from mpc8560_ads.c
  13  * Copyright 2002, 2003 Motorola Inc.
  14  *
  15  * Ported to 2.6, Matt Porter <mporter@kernel.crashing.org>
  16  * Copyright 2004-2005 MontaVista Software, Inc.
  17  */
  18
  19 #include <linux/stddef.h>
  20 #include <linux/kernel.h>
  21 #include <linux/pci.h>
  22 #include <linux/kdev_t.h>
  23 #include <linux/delay.h>
  24 #include <linux/seq_file.h>
  25 #include <linux/of_platform.h>
  26
  27 #include <asm/time.h>
  28 #include <asm/machdep.h>
  29 #include <asm/pci-bridge.h>
  30 #include <asm/mpic.h>
  31 #include <asm/prom.h>
  32 #include <mm/mmu_decl.h>
  33 #include <asm/udbg.h>
  34
  35 #include <sysdev/fsl_soc.h>
  36 #include <sysdev/fsl_pci.h>
  37
  38 #include "mpc85xx.h"
  39
  40 #ifdef CONFIG_CPM2
  41 #include <asm/cpm2.h>
  42 #endif /* CONFIG_CPM2 */
  43
  44 static void __init stx_gp3_pic_init(void)
  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         mpc85xx_cpm2_pic_init();
  52 }
  53
  54 /*
  55  * Setup the architecture
  56  */
  57 static void __init stx_gp3_setup_arch(void)
  58 {
  59         if (ppc_md.progress)
  60                 ppc_md.progress("stx_gp3_setup_arch()", 0);
  61
  62         fsl_pci_assign_primary();
  63
  64 #ifdef CONFIG_CPM2
  65         cpm2_reset();
  66 #endif
  67 }
  68
  69 static void stx_gp3_show_cpuinfo(struct seq_file *m)
  70 {
  71         uint pvid, svid, phid1;
  72
  73         pvid = mfspr(SPRN_PVR);
  74         svid = mfspr(SPRN_SVR);
  75
  76         seq_printf(m, "Vendor\t\t: RPC Electronics STx\n");
  77         seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
  78         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
  79
  80         /* Display cpu Pll setting */
  81         phid1 = mfspr(SPRN_HID1);
  82         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
  83 }
  84
  85 machine_arch_initcall(stx_gp3, mpc85xx_common_publish_devices);
  86
  87 /*
  88  * Called very early, device-tree isn't unflattened
  89  */
  90 static int __init stx_gp3_probe(void)
  91 {
  92         return of_machine_is_compatible("stx,gp3-8560");
  93 }
  94
  95 define_machine(stx_gp3) {
  96         .name                   = "STX GP3",
  97         .probe                  = stx_gp3_probe,
  98         .setup_arch             = stx_gp3_setup_arch,
  99         .init_IRQ               = stx_gp3_pic_init,
 100         .show_cpuinfo           = stx_gp3_show_cpuinfo,
 101         .get_irq                = mpic_get_irq,
 102         .calibrate_decr         = generic_calibrate_decr,
 103         .progress               = udbg_progress,
 104 };