LXR uboot/board/xes/xpedite537x/xpedite537x.c

   1/*
   2 * Copyright 2008 Extreme Engineering Solutions, Inc.
   3 *
   4 * See file CREDITS for list of people who contributed to this
   5 * project.
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License as
   9 * published by the Free Software Foundation; either version 2 of
  10 * the License, or (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20 * MA 02111-1307 USA
  21 */
  22
  23#include <common.h>
  24#include <command.h>
  25#include <asm/processor.h>
  26#include <asm/mmu.h>
  27#include <asm/immap_85xx.h>
  28#include <asm/fsl_pci.h>
  29#include <asm/io.h>
  30#include <asm/cache.h>
  31#include <libfdt.h>
  32#include <fdt_support.h>
  33#include <pca953x.h>
  34
  35DECLARE_GLOBAL_DATA_PTR;
  36
  37extern void ft_board_pci_setup(void *blob, bd_t *bd);
  38
  39static void flash_cs_fixup(void)
  40{
  41        int flash_sel;
  42
  43        /*
  44         * Print boot dev and swap flash flash chip selects if booted from 2nd
  45         * flash.  Swapping chip selects presents user with a common memory
  46         * map regardless of which flash was booted from.
  47         */
  48        flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
  49                        CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS));
  50        printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1);
  51
  52        if (flash_sel) {
  53                set_lbc_br(0, CONFIG_SYS_BR1_PRELIM);
  54                set_lbc_or(0, CONFIG_SYS_OR1_PRELIM);
  55
  56                set_lbc_br(1, CONFIG_SYS_BR0_PRELIM);
  57                set_lbc_or(1, CONFIG_SYS_OR0_PRELIM);
  58        }
  59}
  60
  61int board_early_init_r(void)
  62{
  63        /* Initialize PCA9557 devices */
  64        pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0);
  65        pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0);
  66        pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0);
  67        pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0);
  68
  69        /*
  70         * Remap NOR flash region to caching-inhibited
  71         * so that flash can be erased/programmed properly.
  72         */
  73
  74        /* Flush d-cache and invalidate i-cache of any FLASH data */
  75        flush_dcache();
  76        invalidate_icache();
  77
  78        /* Invalidate existing TLB entry for NOR flash */
  79        disable_tlb(0);
  80        set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
  81                (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
  82                MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  83                0, 0, BOOKE_PAGESZ_256M, 1);
  84
  85        flash_cs_fixup();
  86
  87        return 0;
  88}
  89
  90#if defined(CONFIG_OF_BOARD_SETUP)
  91void ft_board_setup(void *blob, bd_t *bd)
  92{
  93#ifdef CONFIG_PCI
  94        ft_board_pci_setup(blob, bd);
  95#endif
  96        ft_cpu_setup(blob, bd);
  97}
  98#endif
  99