1 /* 2 * Copyright 2008-2011 DENX Software Engineering GmbH 3 * Author: Heiko Schocher <hs@denx.de> 4 * 5 * Description: 6 * Keymile KMETER1 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/stddef.h> 15 #include <linux/kernel.h> 16 #include <linux/init.h> 17 #include <linux/errno.h> 18 #include <linux/reboot.h> 19 #include <linux/pci.h> 20 #include <linux/kdev_t.h> 21 #include <linux/major.h> 22 #include <linux/console.h> 23 #include <linux/delay.h> 24 #include <linux/seq_file.h> 25 #include <linux/root_dev.h> 26 #include <linux/initrd.h> 27 #include <linux/of_platform.h> 28 #include <linux/of_device.h> 29 30 #include <asm/system.h> 31 #include <linux/atomic.h> 32 #include <asm/time.h> 33 #include <asm/io.h> 34 #include <asm/machdep.h> 35 #include <asm/ipic.h> 36 #include <asm/irq.h> 37 #include <asm/prom.h> 38 #include <asm/udbg.h> 39 #include <sysdev/fsl_soc.h> 40 #include <sysdev/fsl_pci.h> 41 #include <asm/qe.h> 42 #include <asm/qe_ic.h> 43 44 #include "mpc83xx.h" 45 46 #define SVR_REV(svr) (((svr) >> 0) & 0xFFFF) /* Revision field */ 47 /* ************************************************************************ 48 * 49 * Setup the architecture 50 * 51 */ 52 static void __init mpc83xx_km_setup_arch(void) 53 { 54 #ifdef CONFIG_QUICC_ENGINE 55 struct device_node *np; 56 #endif 57 58 if (ppc_md.progress) 59 ppc_md.progress("kmpbec83xx_setup_arch()", 0); 60 61 mpc83xx_setup_pci(); 62 63 #ifdef CONFIG_QUICC_ENGINE 64 qe_reset(); 65 66 np = of_find_node_by_name(NULL, "par_io"); 67 if (np != NULL) { 68 par_io_init(np); 69 of_node_put(np); 70 71 for_each_node_by_name(np, "spi") 72 par_io_of_config(np); 73 74 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) 75 par_io_of_config(np); 76 } 77 78 np = of_find_compatible_node(NULL, "network", "ucc_geth"); 79 if (np != NULL) { 80 uint svid; 81 82 /* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */ 83 svid = mfspr(SPRN_SVR); 84 if (SVR_REV(svid) == 0x0021) { 85 struct device_node *np_par; 86 struct resource res; 87 void __iomem *base; 88 int ret; 89 90 np_par = of_find_node_by_name(NULL, "par_io"); 91 if (np_par == NULL) { 92 printk(KERN_WARNING "%s couldn;t find par_io node\n", 93 __func__); 94 return; 95 } 96 /* Map Parallel I/O ports registers */ 97 ret = of_address_to_resource(np_par, 0, &res); 98 if (ret) { 99 printk(KERN_WARNING "%s couldn;t map par_io registers\n", 100 __func__); 101 return; 102 } 103 base = ioremap(res.start, resource_size(&res)); 104 105 /* 106 * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2) 107 * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1) 108 */ 109 setbits32((base + 0xa8), 0x0c003000); 110 111 /* 112 * IMMR + 0x14AC[20:27] = 10101010 113 * (data delay for both UCC's) 114 */ 115 clrsetbits_be32((base + 0xac), 0xff0, 0xaa0); 116 iounmap(base); 117 of_node_put(np_par); 118 } 119 of_node_put(np); 120 } 121 #endif /* CONFIG_QUICC_ENGINE */ 122 } 123 124 machine_device_initcall(mpc83xx_km, mpc83xx_declare_of_platform_devices); 125 126 /* list of the supported boards */ 127 static char *board[] __initdata = { 128 "Keymile,KMETER1", 129 "Keymile,kmpbec8321", 130 NULL 131 }; 132 133 /* 134 * Called very early, MMU is off, device-tree isn't unflattened 135 */ 136 static int __init mpc83xx_km_probe(void) 137 { 138 unsigned long node = of_get_flat_dt_root(); 139 int i = 0; 140 141 while (board[i]) { 142 if (of_flat_dt_is_compatible(node, board[i])) 143 break; 144 i++; 145 } 146 return (board[i] != NULL); 147 } 148 149 define_machine(mpc83xx_km) { 150 .name = "mpc83xx-km-platform", 151 .probe = mpc83xx_km_probe, 152 .setup_arch = mpc83xx_km_setup_arch, 153 .init_IRQ = mpc83xx_ipic_and_qe_init_IRQ, 154 .get_irq = ipic_get_irq, 155 .restart = mpc83xx_restart, 156 .time_init = mpc83xx_time_init, 157 .calibrate_decr = generic_calibrate_decr, 158 .progress = udbg_progress, 159 }; 160