1/* 2 * arch/powerpc/platforms/83xx/mpc837x_rdb.c 3 * 4 * Copyright (C) 2007 Freescale Semicondutor, Inc. All rights reserved. 5 * 6 * MPC837x RDB board specific routines 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/pci.h> 15#include <linux/of_platform.h> 16 17#include <asm/time.h> 18#include <asm/ipic.h> 19#include <asm/udbg.h> 20#include <sysdev/fsl_soc.h> 21#include <sysdev/fsl_pci.h> 22 23#include "mpc83xx.h" 24 25static void mpc837x_rdb_sd_cfg(void) 26{ 27 void __iomem *im; 28 29 im = ioremap(get_immrbase(), 0x1000); 30 if (!im) { 31 WARN_ON(1); 32 return; 33 } 34 35 /* 36 * On RDB boards (in contrast to MDS) USBB pins are used for SD only, 37 * so we can safely mux them away from the USB block. 38 */ 39 clrsetbits_be32(im + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USBB_MASK, 40 MPC837X_SICRL_SD); 41 clrsetbits_be32(im + MPC83XX_SICRH_OFFS, MPC837X_SICRH_SPI_MASK, 42 MPC837X_SICRH_SD); 43 iounmap(im); 44} 45 46/* ************************************************************************ 47 * 48 * Setup the architecture 49 * 50 */ 51static void __init mpc837x_rdb_setup_arch(void) 52{ 53#ifdef CONFIG_PCI 54 struct device_node *np; 55#endif 56 57 if (ppc_md.progress) 58 ppc_md.progress("mpc837x_rdb_setup_arch()", 0); 59 60#ifdef CONFIG_PCI 61 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") 62 mpc83xx_add_bridge(np); 63 for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie") 64 mpc83xx_add_bridge(np); 65#endif 66 mpc837x_usb_cfg(); 67 mpc837x_rdb_sd_cfg(); 68} 69 70static struct of_device_id mpc837x_ids[] = { 71 { .type = "soc", }, 72 { .compatible = "soc", }, 73 { .compatible = "simple-bus", }, 74 { .compatible = "gianfar", }, 75 { .compatible = "gpio-leds", }, 76 {}, 77}; 78 79static int __init mpc837x_declare_of_platform_devices(void) 80{ 81 /* Publish platform_device */ 82 of_platform_bus_probe(NULL, mpc837x_ids, NULL); 83 84 return 0; 85} 86machine_device_initcall(mpc837x_rdb, mpc837x_declare_of_platform_devices); 87 88static void __init mpc837x_rdb_init_IRQ(void) 89{ 90 struct device_node *np; 91 92 np = of_find_compatible_node(NULL, NULL, "fsl,ipic"); 93 if (!np) 94 return; 95 96 ipic_init(np, 0); 97 98 /* Initialize the default interrupt mapping priorities, 99 * in case the boot rom changed something on us. 100 */ 101 ipic_set_default_priority(); 102} 103 104/* 105 * Called very early, MMU is off, device-tree isn't unflattened 106 */ 107static int __init mpc837x_rdb_probe(void) 108{ 109 unsigned long root = of_get_flat_dt_root(); 110 111 return of_flat_dt_is_compatible(root, "fsl,mpc8377rdb") || 112 of_flat_dt_is_compatible(root, "fsl,mpc8378rdb") || 113 of_flat_dt_is_compatible(root, "fsl,mpc8379rdb") || 114 of_flat_dt_is_compatible(root, "fsl,mpc8377wlan"); 115} 116 117define_machine(mpc837x_rdb) { 118 .name = "MPC837x RDB/WLAN", 119 .probe = mpc837x_rdb_probe, 120 .setup_arch = mpc837x_rdb_setup_arch, 121 .init_IRQ = mpc837x_rdb_init_IRQ, 122 .get_irq = ipic_get_irq, 123 .restart = mpc83xx_restart, 124 .time_init = mpc83xx_time_init, 125 .calibrate_decr = generic_calibrate_decr, 126 .progress = udbg_progress, 127}; 128