board/freescale/mpc8315erdb/mpc8315erdb.c

   1 /*
   2  * Copyright (C) 2007 Freescale Semiconductor, Inc.
   3  *
   4  * Author: Scott Wood <scottwood@freescale.com>
   5  *         Dave Liu <daveliu@freescale.com>
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS for A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <i2c.h>
  28 #include <libfdt.h>
  29 #include <fdt_support.h>
  30 #include <pci.h>
  31 #include <mpc83xx.h>
  32 #include <netdev.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 int board_early_init_f(void)
  37 {
  38         volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
  39
  40         if (im->pmc.pmccr1 & PMCCR1_POWER_OFF)
  41                 gd->flags |= GD_FLG_SILENT;
  42
  43         return 0;
  44 }
  45
  46 static u8 read_board_info(void)
  47 {
  48         u8 val8;
  49         i2c_set_bus_num(0);
  50
  51         if (i2c_read(CONFIG_SYS_I2C_PCF8574A_ADDR, 0, 0, &val8, 1) == 0)
  52                 return val8;
  53         else
  54                 return 0;
  55 }
  56
  57 int checkboard(void)
  58 {
  59         static const char * const rev_str[] = {
  60                 "0.0",
  61                 "0.1",
  62                 "1.0",
  63                 "1.1",
  64                 "<unknown>",
  65         };
  66         u8 info;
  67         int i;
  68
  69         info = read_board_info();
  70         i = (!info) ? 4: info & 0x03;
  71
  72         printf("Board: Freescale MPC8315ERDB Rev %s\n", rev_str[i]);
  73
  74         return 0;
  75 }
  76
  77 static struct pci_region pci_regions[] = {
  78         {
  79                 bus_start: CONFIG_SYS_PCI_MEM_BASE,
  80                 phys_start: CONFIG_SYS_PCI_MEM_PHYS,
  81                 size: CONFIG_SYS_PCI_MEM_SIZE,
  82                 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
  83         },
  84         {
  85                 bus_start: CONFIG_SYS_PCI_MMIO_BASE,
  86                 phys_start: CONFIG_SYS_PCI_MMIO_PHYS,
  87                 size: CONFIG_SYS_PCI_MMIO_SIZE,
  88                 flags: PCI_REGION_MEM
  89         },
  90         {
  91                 bus_start: CONFIG_SYS_PCI_IO_BASE,
  92                 phys_start: CONFIG_SYS_PCI_IO_PHYS,
  93                 size: CONFIG_SYS_PCI_IO_SIZE,
  94                 flags: PCI_REGION_IO
  95         }
  96 };
  97
  98 void pci_init_board(void)
  99 {
 100         volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
 101         volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
 102         volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
 103         struct pci_region *reg[] = { pci_regions };
 104         int warmboot;
 105
 106         /* Enable all 3 PCI_CLK_OUTPUTs. */
 107         clk->occr |= 0xe0000000;
 108
 109         /*
 110          * Configure PCI Local Access Windows
 111          */
 112         pci_law[0].bar = CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR;
 113         pci_law[0].ar = LBLAWAR_EN | LBLAWAR_512MB;
 114
 115         pci_law[1].bar = CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR;
 116         pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB;
 117
 118         warmboot = gd->bd->bi_bootflags & BOOTFLAG_WARM;
 119         warmboot |= immr->pmc.pmccr1 & PMCCR1_POWER_OFF;
 120
 121         mpc83xx_pci_init(1, reg, warmboot);
 122 }
 123
 124 #if defined(CONFIG_OF_BOARD_SETUP)
 125 void fdt_tsec1_fixup(void *fdt, bd_t *bd)
 126 {
 127         char *mpc8315erdb = getenv("mpc8315erdb");
 128         const char disabled[] = "disabled";
 129         const char *path;
 130         int ret;
 131
 132         if (!mpc8315erdb)
 133                 return;
 134
 135         if (!strcmp(mpc8315erdb, "tsec1")) {
 136                 return;
 137         } else if (strcmp(mpc8315erdb, "ulpi")) {
 138                 printf("WARNING: wrong `mpc8315erdb' environment "
 139                        "variable specified: `%s'. Should be `ulpi' "
 140                        "or `tsec1'.\n", mpc8315erdb);
 141                 return;
 142         }
 143
 144         ret = fdt_path_offset(fdt, "/aliases");
 145         if (ret < 0) {
 146                 printf("WARNING: can't find /aliases node\n");
 147                 return;
 148         }
 149
 150         path = fdt_getprop(fdt, ret, "ethernet0", NULL);
 151         if (!path) {
 152                 printf("WARNING: can't find ethernet0 alias\n");
 153                 return;
 154         }
 155
 156         do_fixup_by_path(fdt, path, "status", disabled, sizeof(disabled), 1);
 157 }
 158
 159 void ft_board_setup(void *blob, bd_t *bd)
 160 {
 161         ft_cpu_setup(blob, bd);
 162 #ifdef CONFIG_PCI
 163         ft_pci_setup(blob, bd);
 164 #endif
 165         fdt_fixup_dr_usb(blob, bd);
 166         fdt_tsec1_fixup(blob, bd);
 167 }
 168 #endif
 169
 170 int board_eth_init(bd_t *bis)
 171 {
 172         cpu_eth_init(bis);      /* Initialize TSECs first */
 173         return pci_eth_init(bis);
 174 }