1/* 2 * MPC8540ADS board specific routines 3 * 4 * Maintainer: Kumar Gala <galak@kernel.crashing.org> 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_setup.h> 51 52/* ************************************************************************ 53 * 54 * Setup the architecture 55 * 56 */ 57static void __init 58mpc8540ads_setup_arch(void) 59{ 60 bd_t *binfo = (bd_t *) __res; 61 unsigned int freq; 62 struct gianfar_platform_data *pdata; 63 struct gianfar_mdio_data *mdata; 64 65 /* get the core frequency */ 66 freq = binfo->bi_intfreq; 67 68 if (ppc_md.progress) 69 ppc_md.progress("mpc8540ads_setup_arch()", 0); 70 71 /* Set loops_per_jiffy to a half-way reasonable value, 72 for use until calibrate_delay gets called. */ 73 loops_per_jiffy = freq / HZ; 74 75#ifdef CONFIG_PCI 76 /* setup PCI host bridges */ 77 mpc85xx_setup_hose(); 78#endif 79 80#ifdef CONFIG_SERIAL_8250 81 mpc85xx_early_serial_map(); 82#endif 83 84#ifdef CONFIG_SERIAL_TEXT_DEBUG 85 /* Invalidate the entry we stole earlier the serial ports 86 * should be properly mapped */ 87 invalidate_tlbcam_entry(num_tlbcam_entries - 1); 88#endif 89 90 /* setup the board related info for the MDIO bus */ 91 mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO); 92 93 mdata->irq[0] = MPC85xx_IRQ_EXT5; 94 mdata->irq[1] = MPC85xx_IRQ_EXT5; 95 mdata->irq[2] = PHY_POLL; 96 mdata->irq[3] = MPC85xx_IRQ_EXT5; 97 mdata->irq[31] = PHY_POLL; 98 99 /* setup the board related information for the enet controllers */ 100 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1); 101 if (pdata) { 102 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; 103 pdata->bus_id = 0; 104 pdata->phy_id = 0; 105 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6); 106 } 107 108 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2); 109 if (pdata) { 110 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; 111 pdata->bus_id = 0; 112 pdata->phy_id = 1; 113 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6); 114 } 115 116 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_FEC); 117 if (pdata) { 118 pdata->board_flags = 0; 119 pdata->bus_id = 0; 120 pdata->phy_id = 3; 121 memcpy(pdata->mac_addr, binfo->bi_enet2addr, 6); 122 } 123 124#ifdef CONFIG_BLK_DEV_INITRD 125 if (initrd_start) 126 ROOT_DEV = Root_RAM0; 127 else 128#endif 129#ifdef CONFIG_ROOT_NFS 130 ROOT_DEV = Root_NFS; 131#else 132 ROOT_DEV = Root_HDA1; 133#endif 134} 135 136/* ************************************************************************ */ 137void __init 138platform_init(unsigned long r3, unsigned long r4, unsigned long r5, 139 unsigned long r6, unsigned long r7) 140{ 141 /* parse_bootinfo must always be called first */ 142 parse_bootinfo(find_bootinfo()); 143 144 /* 145 * If we were passed in a board information, copy it into the 146 * residual data area. 147 */ 148 if (r3) { 149 memcpy((void *) __res, (void *) (r3 + KERNELBASE), 150 sizeof (bd_t)); 151 } 152#ifdef CONFIG_SERIAL_TEXT_DEBUG 153 { 154 bd_t *binfo = (bd_t *) __res; 155 struct uart_port p; 156 157 /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */ 158 settlbcam(num_tlbcam_entries - 1, binfo->bi_immr_base, 159 binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0); 160 161 memset(&p, 0, sizeof (p)); 162 p.iotype = UPIO_MEM; 163 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET; 164 p.uartclk = binfo->bi_busfreq; 165 166 gen550_init(0, &p); 167 168 memset(&p, 0, sizeof (p)); 169 p.iotype = UPIO_MEM; 170 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET; 171 p.uartclk = binfo->bi_busfreq; 172 173 gen550_init(1, &p); 174 } 175#endif 176 177#if defined(CONFIG_BLK_DEV_INITRD) 178 /* 179 * If the init RAM disk has been configured in, and there's a valid 180 * starting address for it, set it up. 181 */ 182 if (r4) { 183 initrd_start = r4 + KERNELBASE; 184 initrd_end = r5 + KERNELBASE; 185 } 186#endif /* CONFIG_BLK_DEV_INITRD */ 187 188 /* Copy the kernel command line arguments to a safe place. */ 189 190 if (r6) { 191 *(char *) (r7 + KERNELBASE) = 0; 192 strcpy(cmd_line, (char *) (r6 + KERNELBASE)); 193 } 194 195 identify_ppc_sys_by_id(mfspr(SPRN_SVR)); 196 197 /* setup the PowerPC module struct */ 198 ppc_md.setup_arch = mpc8540ads_setup_arch; 199 ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo; 200 201 ppc_md.init_IRQ = mpc85xx_ads_init_IRQ; 202 ppc_md.get_irq = openpic_get_irq; 203 204 ppc_md.restart = mpc85xx_restart; 205 ppc_md.power_off = mpc85xx_power_off; 206 ppc_md.halt = mpc85xx_halt; 207 208 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory; 209 210 ppc_md.time_init = NULL; 211 ppc_md.set_rtc_time = NULL; 212 ppc_md.get_rtc_time = NULL; 213 ppc_md.calibrate_decr = mpc85xx_calibrate_decr; 214 215#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG) 216 ppc_md.progress = gen550_progress; 217#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */ 218#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB) 219 ppc_md.early_serial_map = mpc85xx_early_serial_map; 220#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */ 221 222 if (ppc_md.progress) 223 ppc_md.progress("mpc8540ads_init(): exit", 0); 224 225 return; 226} 227