1/* 2 * Wind River SBC8560 board specific routines 3 * 4 * Maintainer: Kumar Gala 5 * 6 * Copyright 2004 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/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/serial.h> 27#include <linux/tty.h> /* for linux/serial_core.h */ 28#include <linux/serial_core.h> 29#include <linux/initrd.h> 30#include <linux/module.h> 31#include <linux/fsl_devices.h> 32 33#include <asm/system.h> 34#include <asm/pgtable.h> 35#include <asm/page.h> 36#include <asm/atomic.h> 37#include <asm/time.h> 38#include <asm/io.h> 39#include <asm/machdep.h> 40#include <asm/open_pic.h> 41#include <asm/bootinfo.h> 42#include <asm/pci-bridge.h> 43#include <asm/mpc85xx.h> 44#include <asm/irq.h> 45#include <asm/immap_85xx.h> 46#include <asm/kgdb.h> 47#include <asm/ppc_sys.h> 48#include <mm/mmu_decl.h> 49 50#include <syslib/ppc85xx_common.h> 51#include <syslib/ppc85xx_setup.h> 52 53#ifdef CONFIG_SERIAL_8250 54static void __init 55sbc8560_early_serial_map(void) 56{ 57 struct uart_port uart_req; 58 59 /* Setup serial port access */ 60 memset(&uart_req, 0, sizeof (uart_req)); 61 uart_req.irq = MPC85xx_IRQ_EXT9; 62 uart_req.flags = STD_COM_FLAGS; 63 uart_req.uartclk = BASE_BAUD * 16; 64 uart_req.iotype = UPIO_MEM; 65 uart_req.mapbase = UARTA_ADDR; 66 uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART0_SIZE); 67 uart_req.type = PORT_16650; 68 69#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) 70 gen550_init(0, &uart_req); 71#endif 72 73 if (early_serial_setup(&uart_req) != 0) 74 printk("Early serial init of port 0 failed\n"); 75 76 /* Assume early_serial_setup() doesn't modify uart_req */ 77 uart_req.line = 1; 78 uart_req.mapbase = UARTB_ADDR; 79 uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART1_SIZE); 80 uart_req.irq = MPC85xx_IRQ_EXT10; 81 82#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) 83 gen550_init(1, &uart_req); 84#endif 85 86 if (early_serial_setup(&uart_req) != 0) 87 printk("Early serial init of port 1 failed\n"); 88} 89#endif 90 91/* ************************************************************************ 92 * 93 * Setup the architecture 94 * 95 */ 96static void __init 97sbc8560_setup_arch(void) 98{ 99 bd_t *binfo = (bd_t *) __res; 100 unsigned int freq; 101 struct gianfar_platform_data *pdata; 102 struct gianfar_mdio_data *mdata; 103 104 /* get the core frequency */ 105 freq = binfo->bi_intfreq; 106 107 if (ppc_md.progress) 108 ppc_md.progress("sbc8560_setup_arch()", 0); 109 110 /* Set loops_per_jiffy to a half-way reasonable value, 111 for use until calibrate_delay gets called. */ 112 loops_per_jiffy = freq / HZ; 113 114#ifdef CONFIG_PCI 115 /* setup PCI host bridges */ 116 mpc85xx_setup_hose(); 117#endif 118#ifdef CONFIG_SERIAL_8250 119 sbc8560_early_serial_map(); 120#endif 121#ifdef CONFIG_SERIAL_TEXT_DEBUG 122 /* Invalidate the entry we stole earlier the serial ports 123 * should be properly mapped */ 124 invalidate_tlbcam_entry(num_tlbcam_entries - 1); 125#endif 126 127 /* setup the board related info for the MDIO bus */ 128 mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO); 129 130 mdata->irq[25] = MPC85xx_IRQ_EXT6; 131 mdata->irq[26] = MPC85xx_IRQ_EXT7; 132 mdata->irq[31] = PHY_POLL; 133 134 /* setup the board related information for the enet controllers */ 135 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1); 136 if (pdata) { 137 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; 138 pdata->bus_id = 0; 139 pdata->phy_id = 25; 140 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6); 141 } 142 143 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2); 144 if (pdata) { 145 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; 146 pdata->bus_id = 0; 147 pdata->phy_id = 26; 148 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6); 149 } 150 151#ifdef CONFIG_BLK_DEV_INITRD 152 if (initrd_start) 153 ROOT_DEV = Root_RAM0; 154 else 155#endif 156#ifdef CONFIG_ROOT_NFS 157 ROOT_DEV = Root_NFS; 158#else 159 ROOT_DEV = Root_HDA1; 160#endif 161} 162 163/* ************************************************************************ */ 164void __init 165platform_init(unsigned long r3, unsigned long r4, unsigned long r5, 166 unsigned long r6, unsigned long r7) 167{ 168 /* parse_bootinfo must always be called first */ 169 parse_bootinfo(find_bootinfo()); 170 171 /* 172 * If we were passed in a board information, copy it into the 173 * residual data area. 174 */ 175 if (r3) { 176 memcpy((void *) __res, (void *) (r3 + KERNELBASE), 177 sizeof (bd_t)); 178 } 179 180#ifdef CONFIG_SERIAL_TEXT_DEBUG 181 /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */ 182 settlbcam(num_tlbcam_entries - 1, UARTA_ADDR, 183 UARTA_ADDR, 0x1000, _PAGE_IO, 0); 184#endif 185 186#if defined(CONFIG_BLK_DEV_INITRD) 187 /* 188 * If the init RAM disk has been configured in, and there's a valid 189 * starting address for it, set it up. 190 */ 191 if (r4) { 192 initrd_start = r4 + KERNELBASE; 193 initrd_end = r5 + KERNELBASE; 194 } 195#endif /* CONFIG_BLK_DEV_INITRD */ 196 197 /* Copy the kernel command line arguments to a safe place. */ 198 199 if (r6) { 200 *(char *) (r7 + KERNELBASE) = 0; 201 strcpy(cmd_line, (char *) (r6 + KERNELBASE)); 202 } 203 204 identify_ppc_sys_by_id(mfspr(SPRN_SVR)); 205 206 /* setup the PowerPC module struct */ 207 ppc_md.setup_arch = sbc8560_setup_arch; 208 ppc_md.show_cpuinfo = sbc8560_show_cpuinfo; 209 210 ppc_md.init_IRQ = sbc8560_init_IRQ; 211 ppc_md.get_irq = openpic_get_irq; 212 213 ppc_md.restart = mpc85xx_restart; 214 ppc_md.power_off = mpc85xx_power_off; 215 ppc_md.halt = mpc85xx_halt; 216 217 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory; 218 219 ppc_md.time_init = NULL; 220 ppc_md.set_rtc_time = NULL; 221 ppc_md.get_rtc_time = NULL; 222 ppc_md.calibrate_decr = mpc85xx_calibrate_decr; 223 224#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG) 225 ppc_md.progress = gen550_progress; 226#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */ 227#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB) 228 ppc_md.early_serial_map = sbc8560_early_serial_map; 229#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */ 230 231 if (ppc_md.progress) 232 ppc_md.progress("sbc8560_init(): exit", 0); 233} 234