arch/powerpc/platforms/85xx/mpc85xx_ads.c

   1 /*
   2  * MPC85xx setup and early boot code plus other random bits.
   3  *
   4  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   5  *
   6  * Copyright 2005 Freescale Semiconductor Inc.
   7  *
   8  * This program is free software; you can redistribute  it and/or modify it
   9  * under  the terms of  the GNU General  Public License as published by the
  10  * Free Software Foundation;  either version 2 of the  License, or (at your
  11  * option) any later version.
  12  */
  13
  14 #include <linux/stddef.h>
  15 #include <linux/kernel.h>
  16 #include <linux/pci.h>
  17 #include <linux/kdev_t.h>
  18 #include <linux/delay.h>
  19 #include <linux/seq_file.h>
  20 #include <linux/of_platform.h>
  21
  22 #include <asm/time.h>
  23 #include <asm/machdep.h>
  24 #include <asm/pci-bridge.h>
  25 #include <asm/mpic.h>
  26 #include <mm/mmu_decl.h>
  27 #include <asm/udbg.h>
  28
  29 #include <sysdev/fsl_soc.h>
  30 #include <sysdev/fsl_pci.h>
  31
  32 #ifdef CONFIG_CPM2
  33 #include <asm/cpm2.h>
  34 #include <sysdev/cpm2_pic.h>
  35 #endif
  36
  37 #include "mpc85xx.h"
  38
  39 static void __init mpc85xx_ads_pic_init(void)
  40 {
  41         struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
  42                         0, 256, " OpenPIC  ");
  43         BUG_ON(mpic == NULL);
  44         mpic_init(mpic);
  45
  46         mpc85xx_cpm2_pic_init();
  47 }
  48
  49 /*
  50  * Setup the architecture
  51  */
  52 #ifdef CONFIG_CPM2
  53 struct cpm_pin {
  54         int port, pin, flags;
  55 };
  56
  57 static const struct cpm_pin mpc8560_ads_pins[] = {
  58         /* SCC1 */
  59         {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  60         {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  61         {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  62
  63         /* SCC2 */
  64         {2, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  65         {2, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  66         {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  67         {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  68         {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  69
  70         /* FCC2 */
  71         {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  72         {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  73         {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  74         {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  75         {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  76         {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  77         {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  78         {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  79         {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  80         {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  81         {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  82         {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  83         {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  84         {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  85         {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
  86         {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */
  87
  88         /* FCC3 */
  89         {1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  90         {1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  91         {1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  92         {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  93         {1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  94         {1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  95         {1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  96         {1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  97         {1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
  98         {1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
  99         {1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
 100         {1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
 101         {1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
 102         {2, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK16 */
 103         {2, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK15 */
 104         {2, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
 105 };
 106
 107 static void __init init_ioports(void)
 108 {
 109         int i;
 110
 111         for (i = 0; i < ARRAY_SIZE(mpc8560_ads_pins); i++) {
 112                 const struct cpm_pin *pin = &mpc8560_ads_pins[i];
 113                 cpm2_set_pin(pin->port, pin->pin, pin->flags);
 114         }
 115
 116         cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
 117         cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
 118         cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
 119         cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
 120         cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
 121         cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
 122         cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
 123         cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
 124 }
 125 #endif
 126
 127 static void __init mpc85xx_ads_setup_arch(void)
 128 {
 129         if (ppc_md.progress)
 130                 ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
 131
 132 #ifdef CONFIG_CPM2
 133         cpm2_reset();
 134         init_ioports();
 135 #endif
 136
 137         fsl_pci_assign_primary();
 138 }
 139
 140 static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
 141 {
 142         uint pvid, svid, phid1;
 143
 144         pvid = mfspr(SPRN_PVR);
 145         svid = mfspr(SPRN_SVR);
 146
 147         seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
 148         seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
 149         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
 150
 151         /* Display cpu Pll setting */
 152         phid1 = mfspr(SPRN_HID1);
 153         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
 154 }
 155
 156 machine_arch_initcall(mpc85xx_ads, mpc85xx_common_publish_devices);
 157
 158 /*
 159  * Called very early, device-tree isn't unflattened
 160  */
 161 static int __init mpc85xx_ads_probe(void)
 162 {
 163         return of_machine_is_compatible("MPC85xxADS");
 164 }
 165
 166 define_machine(mpc85xx_ads) {
 167         .name                   = "MPC85xx ADS",
 168         .probe                  = mpc85xx_ads_probe,
 169         .setup_arch             = mpc85xx_ads_setup_arch,
 170         .init_IRQ               = mpc85xx_ads_pic_init,
 171         .show_cpuinfo           = mpc85xx_ads_show_cpuinfo,
 172         .get_irq                = mpic_get_irq,
 173         .calibrate_decr         = generic_calibrate_decr,
 174         .progress               = udbg_progress,
 175 };