LXR linux/arch/powerpc/platforms/85xx/p1023

   1/*
   2 * Copyright 2010-2011, 2013 Freescale Semiconductor, Inc.
   3 *
   4 * Author: Roy Zang <tie-fei.zang@freescale.com>
   5 *
   6 * Description:
   7 * P1023 RDS Board Setup
   8 *
   9 * This program is free software; you can redistribute  it and/or modify it
  10 * under  the terms of  the GNU General  Public License as published by the
  11 * Free Software Foundation;  either version 2 of the  License, or (at your
  12 * option) any later version.
  13 */
  14
  15#include <linux/kernel.h>
  16#include <linux/init.h>
  17#include <linux/errno.h>
  18#include <linux/pci.h>
  19#include <linux/delay.h>
  20#include <linux/module.h>
  21#include <linux/fsl_devices.h>
  22#include <linux/of_platform.h>
  23#include <linux/of_device.h>
  24
  25#include <asm/time.h>
  26#include <asm/machdep.h>
  27#include <asm/pci-bridge.h>
  28#include <mm/mmu_decl.h>
  29#include <asm/prom.h>
  30#include <asm/udbg.h>
  31#include <asm/mpic.h>
  32#include "smp.h"
  33
  34#include <sysdev/fsl_soc.h>
  35#include <sysdev/fsl_pci.h>
  36
  37#include "mpc85xx.h"
  38
  39/* ************************************************************************
  40 *
  41 * Setup the architecture
  42 *
  43 */
  44static void __init mpc85xx_rds_setup_arch(void)
  45{
  46        struct device_node *np;
  47
  48        if (ppc_md.progress)
  49                ppc_md.progress("p1023_rds_setup_arch()", 0);
  50
  51        /* Map BCSR area */
  52        np = of_find_node_by_name(NULL, "bcsr");
  53        if (np != NULL) {
  54                static u8 __iomem *bcsr_regs;
  55
  56                bcsr_regs = of_iomap(np, 0);
  57                of_node_put(np);
  58
  59                if (!bcsr_regs) {
  60                        printk(KERN_ERR
  61                               "BCSR: Failed to map bcsr register space\n");
  62                        return;
  63                } else {
  64#define BCSR15_I2C_BUS0_SEG_CLR         0x07
  65#define BCSR15_I2C_BUS0_SEG2            0x02
  66/*
  67 * Note: Accessing exclusively i2c devices.
  68 *
  69 * The i2c controller selects initially ID EEPROM in the u-boot;
  70 * but if menu configuration selects RTC support in the kernel,
  71 * the i2c controller switches to select RTC chip in the kernel.
  72 */
  73#ifdef CONFIG_RTC_CLASS
  74                        /* Enable RTC chip on the segment #2 of i2c */
  75                        clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR);
  76                        setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2);
  77#endif
  78
  79                        iounmap(bcsr_regs);
  80                }
  81        }
  82
  83        mpc85xx_smp_init();
  84
  85        fsl_pci_assign_primary();
  86}
  87
  88machine_arch_initcall(p1023_rds, mpc85xx_common_publish_devices);
  89machine_arch_initcall(p1023_rdb, mpc85xx_common_publish_devices);
  90
  91static void __init mpc85xx_rds_pic_init(void)
  92{
  93        struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
  94                MPIC_SINGLE_DEST_CPU,
  95                0, 256, " OpenPIC  ");
  96
  97        BUG_ON(mpic == NULL);
  98
  99        mpic_init(mpic);
 100}
 101
 102static int __init p1023_rds_probe(void)
 103{
 104        unsigned long root = of_get_flat_dt_root();
 105
 106        return of_flat_dt_is_compatible(root, "fsl,P1023RDS");
 107
 108}
 109
 110static int __init p1023_rdb_probe(void)
 111{
 112        unsigned long root = of_get_flat_dt_root();
 113
 114        return of_flat_dt_is_compatible(root, "fsl,P1023RDB");
 115
 116}
 117
 118define_machine(p1023_rds) {
 119        .name                   = "P1023 RDS",
 120        .probe                  = p1023_rds_probe,
 121        .setup_arch             = mpc85xx_rds_setup_arch,
 122        .init_IRQ               = mpc85xx_rds_pic_init,
 123        .get_irq                = mpic_get_irq,
 124        .restart                = fsl_rstcr_restart,
 125        .calibrate_decr         = generic_calibrate_decr,
 126        .progress               = udbg_progress,
 127#ifdef CONFIG_PCI
 128        .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 129#endif
 130};
 131
 132define_machine(p1023_rdb) {
 133        .name                   = "P1023 RDB",
 134        .probe                  = p1023_rdb_probe,
 135        .setup_arch             = mpc85xx_rds_setup_arch,
 136        .init_IRQ               = mpc85xx_rds_pic_init,
 137        .get_irq                = mpic_get_irq,
 138        .restart                = fsl_rstcr_restart,
 139        .calibrate_decr         = generic_calibrate_decr,
 140        .progress               = udbg_progress,
 141#ifdef CONFIG_PCI
 142        .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 143#endif
 144};
 145