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 <asm/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 struct device_node *np; 55 56 if (ppc_md.progress) 57 ppc_md.progress("kmpbec83xx_setup_arch()", 0); 58 59 #ifdef CONFIG_PCI 60 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") 61 mpc83xx_add_bridge(np); 62 #endif 63 64 #ifdef CONFIG_QUICC_ENGINE 65 qe_reset(); 66 67 np = of_find_node_by_name(NULL, "par_io"); 68 if (np != NULL) { 69 par_io_init(np); 70 of_node_put(np); 71 72 for_each_node_by_name(np, "spi") 73 par_io_of_config(np); 74 75 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) 76 par_io_of_config(np); 77 } 78 79 np = of_find_compatible_node(NULL, "network", "ucc_geth"); 80 if (np != NULL) { 81 uint svid; 82 83 /* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */ 84 svid = mfspr(SPRN_SVR); 85 if (SVR_REV(svid) == 0x0021) { 86 struct device_node *np_par; 87 struct resource res; 88 void __iomem *base; 89 int ret; 90 91 np_par = of_find_node_by_name(NULL, "par_io"); 92 if (np_par == NULL) { 93 printk(KERN_WARNING "%s couldn;t find par_io node\n", 94 __func__); 95 return; 96 } 97 /* Map Parallel I/O ports registers */ 98 ret = of_address_to_resource(np_par, 0, &res); 99 if (ret) { 100 printk(KERN_WARNING "%s couldn;t map par_io registers\n", 101 __func__); 102 return; 103 } 104 base = ioremap(res.start, res.end - res.start + 1); 105 106 /* 107 * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2) 108 * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1) 109 */ 110 setbits32((base + 0xa8), 0x0c003000); 111 112 /* 113 * IMMR + 0x14AC[20:27] = 10101010 114 * (data delay for both UCC's) 115 */ 116 clrsetbits_be32((base + 0xac), 0xff0, 0xaa0); 117 iounmap(base); 118 of_node_put(np_par); 119 } 120 of_node_put(np); 121 } 122 #endif /* CONFIG_QUICC_ENGINE */ 123 } 124 125 static struct of_device_id kmpbec83xx_ids[] = { 126 { .type = "soc", }, 127 { .compatible = "soc", }, 128 { .compatible = "simple-bus", }, 129 { .type = "qe", }, 130 { .compatible = "fsl,qe", }, 131 {}, 132 }; 133 134 static int __init kmeter_declare_of_platform_devices(void) 135 { 136 /* Publish the QE devices */ 137 of_platform_bus_probe(NULL, kmpbec83xx_ids, NULL); 138 139 return 0; 140 } 141 machine_device_initcall(mpc83xx_km, kmeter_declare_of_platform_devices); 142 143 static void __init mpc83xx_km_init_IRQ(void) 144 { 145 struct device_node *np; 146 147 np = of_find_compatible_node(NULL, NULL, "fsl,pq2pro-pic"); 148 if (!np) { 149 np = of_find_node_by_type(NULL, "ipic"); 150 if (!np) 151 return; 152 } 153 154 ipic_init(np, 0); 155 156 /* Initialize the default interrupt mapping priorities, 157 * in case the boot rom changed something on us. 158 */ 159 ipic_set_default_priority(); 160 of_node_put(np); 161 162 #ifdef CONFIG_QUICC_ENGINE 163 np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic"); 164 if (!np) { 165 np = of_find_node_by_type(NULL, "qeic"); 166 if (!np) 167 return; 168 } 169 qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic); 170 of_node_put(np); 171 #endif /* CONFIG_QUICC_ENGINE */ 172 } 173 174 /* list of the supported boards */ 175 static char *board[] __initdata = { 176 "Keymile,KMETER1", 177 "Keymile,kmpbec8321", 178 NULL 179 }; 180 181 /* 182 * Called very early, MMU is off, device-tree isn't unflattened 183 */ 184 static int __init mpc83xx_km_probe(void) 185 { 186 unsigned long node = of_get_flat_dt_root(); 187 int i = 0; 188 189 while (board[i]) { 190 if (of_flat_dt_is_compatible(node, board[i])) 191 break; 192 i++; 193 } 194 return (board[i] != NULL); 195 } 196 197 define_machine(mpc83xx_km) { 198 .name = "mpc83xx-km-platform", 199 .probe = mpc83xx_km_probe, 200 .setup_arch = mpc83xx_km_setup_arch, 201 .init_IRQ = mpc83xx_km_init_IRQ, 202 .get_irq = ipic_get_irq, 203 .restart = mpc83xx_restart, 204 .time_init = mpc83xx_time_init, 205 .calibrate_decr = generic_calibrate_decr, 206 .progress = udbg_progress, 207 }; 208