arch/ppc/platforms/85xx/sbc8560.c

   1 /*
   2  * arch/ppc/platforms/85xx/sbc8560.c
   3  *
   4  * Wind River SBC8560 board specific routines
   5  *
   6  * Maintainer: Kumar Gala <kumar.gala@freescale.com>
   7  *
   8  * Copyright 2004 Freescale Semiconductor Inc.
   9  *
  10  * This program is free software; you can redistribute  it and/or modify it
  11  * under  the terms of  the GNU General  Public License as published by the
  12  * Free Software Foundation;  either version 2 of the  License, or (at your
  13  * option) any later version.
  14  */
  15
  16 #include <linux/config.h>
  17 #include <linux/stddef.h>
  18 #include <linux/kernel.h>
  19 #include <linux/init.h>
  20 #include <linux/errno.h>
  21 #include <linux/reboot.h>
  22 #include <linux/pci.h>
  23 #include <linux/kdev_t.h>
  24 #include <linux/major.h>
  25 #include <linux/console.h>
  26 #include <linux/delay.h>
  27 #include <linux/irq.h>
  28 #include <linux/seq_file.h>
  29 #include <linux/root_dev.h>
  30 #include <linux/serial.h>
  31 #include <linux/tty.h>  /* for linux/serial_core.h */
  32 #include <linux/serial_core.h>
  33 #include <linux/initrd.h>
  34 #include <linux/module.h>
  35 #include <linux/fsl_devices.h>
  36
  37 #include <asm/system.h>
  38 #include <asm/pgtable.h>
  39 #include <asm/page.h>
  40 #include <asm/atomic.h>
  41 #include <asm/time.h>
  42 #include <asm/io.h>
  43 #include <asm/machdep.h>
  44 #include <asm/prom.h>
  45 #include <asm/open_pic.h>
  46 #include <asm/bootinfo.h>
  47 #include <asm/pci-bridge.h>
  48 #include <asm/mpc85xx.h>
  49 #include <asm/irq.h>
  50 #include <asm/immap_85xx.h>
  51 #include <asm/kgdb.h>
  52 #include <asm/ppc_sys.h>
  53 #include <mm/mmu_decl.h>
  54
  55 #include <syslib/ppc85xx_common.h>
  56 #include <syslib/ppc85xx_setup.h>
  57
  58 #ifdef CONFIG_SERIAL_8250
  59 static void __init
  60 sbc8560_early_serial_map(void)
  61 {
  62         struct uart_port uart_req;
  63
  64         /* Setup serial port access */
  65         memset(&uart_req, 0, sizeof (uart_req));
  66         uart_req.irq = MPC85xx_IRQ_EXT9;
  67         uart_req.flags = STD_COM_FLAGS;
  68         uart_req.uartclk = BASE_BAUD * 16;
  69         uart_req.iotype = SERIAL_IO_MEM;
  70         uart_req.mapbase = UARTA_ADDR;
  71         uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART0_SIZE);
  72         uart_req.type = PORT_16650;
  73
  74 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
  75         gen550_init(0, &uart_req);
  76 #endif
  77
  78         if (early_serial_setup(&uart_req) != 0)
  79                 printk("Early serial init of port 0 failed\n");
  80
  81         /* Assume early_serial_setup() doesn't modify uart_req */
  82         uart_req.line = 1;
  83         uart_req.mapbase = UARTB_ADDR;
  84         uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART1_SIZE);
  85         uart_req.irq = MPC85xx_IRQ_EXT10;
  86
  87 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
  88         gen550_init(1, &uart_req);
  89 #endif
  90
  91         if (early_serial_setup(&uart_req) != 0)
  92                 printk("Early serial init of port 1 failed\n");
  93 }
  94 #endif
  95
  96 /* ************************************************************************
  97  *
  98  * Setup the architecture
  99  *
 100  */
 101 static void __init
 102 sbc8560_setup_arch(void)
 103 {
 104         bd_t *binfo = (bd_t *) __res;
 105         unsigned int freq;
 106         struct gianfar_platform_data *pdata;
 107
 108         /* get the core frequency */
 109         freq = binfo->bi_intfreq;
 110
 111         if (ppc_md.progress)
 112                 ppc_md.progress("sbc8560_setup_arch()", 0);
 113
 114         /* Set loops_per_jiffy to a half-way reasonable value,
 115            for use until calibrate_delay gets called. */
 116         loops_per_jiffy = freq / HZ;
 117
 118 #ifdef CONFIG_PCI
 119         /* setup PCI host bridges */
 120         mpc85xx_setup_hose();
 121 #endif
 122 #ifdef CONFIG_SERIAL_8250
 123         sbc8560_early_serial_map();
 124 #endif
 125 #ifdef CONFIG_SERIAL_TEXT_DEBUG
 126         /* Invalidate the entry we stole earlier the serial ports
 127          * should be properly mapped */
 128         invalidate_tlbcam_entry(NUM_TLBCAMS - 1);
 129 #endif
 130
 131         /* setup the board related information for the enet controllers */
 132         pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
 133         pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
 134         pdata->interruptPHY = MPC85xx_IRQ_EXT6;
 135         pdata->phyid = 25;
 136         /* fixup phy address */
 137         pdata->phy_reg_addr += binfo->bi_immr_base;
 138         memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
 139
 140         pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
 141         pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
 142         pdata->interruptPHY = MPC85xx_IRQ_EXT7;
 143         pdata->phyid = 26;
 144         /* fixup phy address */
 145         pdata->phy_reg_addr += binfo->bi_immr_base;
 146         memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
 147
 148 #ifdef CONFIG_BLK_DEV_INITRD
 149         if (initrd_start)
 150                 ROOT_DEV = Root_RAM0;
 151         else
 152 #endif
 153 #ifdef  CONFIG_ROOT_NFS
 154                 ROOT_DEV = Root_NFS;
 155 #else
 156                 ROOT_DEV = Root_HDA1;
 157 #endif
 158 }
 159
 160 /* ************************************************************************ */
 161 void __init
 162 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 163               unsigned long r6, unsigned long r7)
 164 {
 165         /* parse_bootinfo must always be called first */
 166         parse_bootinfo(find_bootinfo());
 167
 168         /*
 169          * If we were passed in a board information, copy it into the
 170          * residual data area.
 171          */
 172         if (r3) {
 173                 memcpy((void *) __res, (void *) (r3 + KERNELBASE),
 174                        sizeof (bd_t));
 175         }
 176
 177 #ifdef CONFIG_SERIAL_TEXT_DEBUG
 178         /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
 179         settlbcam(NUM_TLBCAMS - 1, UARTA_ADDR,
 180                   UARTA_ADDR, 0x1000, _PAGE_IO, 0);
 181 #endif
 182
 183 #if defined(CONFIG_BLK_DEV_INITRD)
 184         /*
 185          * If the init RAM disk has been configured in, and there's a valid
 186          * starting address for it, set it up.
 187          */
 188         if (r4) {
 189                 initrd_start = r4 + KERNELBASE;
 190                 initrd_end = r5 + KERNELBASE;
 191         }
 192 #endif                          /* CONFIG_BLK_DEV_INITRD */
 193
 194         /* Copy the kernel command line arguments to a safe place. */
 195
 196         if (r6) {
 197                 *(char *) (r7 + KERNELBASE) = 0;
 198                 strcpy(cmd_line, (char *) (r6 + KERNELBASE));
 199         }
 200
 201         identify_ppc_sys_by_id(mfspr(SPRN_SVR));
 202
 203         /* setup the PowerPC module struct */
 204         ppc_md.setup_arch = sbc8560_setup_arch;
 205         ppc_md.show_cpuinfo = sbc8560_show_cpuinfo;
 206
 207         ppc_md.init_IRQ = sbc8560_init_IRQ;
 208         ppc_md.get_irq = openpic_get_irq;
 209
 210         ppc_md.restart = mpc85xx_restart;
 211         ppc_md.power_off = mpc85xx_power_off;
 212         ppc_md.halt = mpc85xx_halt;
 213
 214         ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
 215
 216         ppc_md.time_init = NULL;
 217         ppc_md.set_rtc_time = NULL;
 218         ppc_md.get_rtc_time = NULL;
 219         ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
 220
 221 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
 222         ppc_md.progress = gen550_progress;
 223 #endif  /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
 224
 225         if (ppc_md.progress)
 226                 ppc_md.progress("sbc8560_init(): exit", 0);
 227 }