board/xes/xpedite520x/xpedite520x.c

   1 /*
   2  * Copyright 2008 Extreme Engineering Solutions, Inc.
   3  * Copyright 2004, 2007 Freescale Semiconductor, Inc.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <command.h>
  26 #include <pci.h>
  27 #include <asm/processor.h>
  28 #include <asm/immap_85xx.h>
  29 #include <asm/fsl_pci.h>
  30 #include <asm/io.h>
  31 #include <asm/cache.h>
  32 #include <asm/mmu.h>
  33 #include <libfdt.h>
  34 #include <fdt_support.h>
  35 #include <pca953x.h>
  36
  37 extern void ft_board_pci_setup(void *blob, bd_t *bd);
  38
  39 static 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_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
  61 int 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
  67         /*
  68          * Remap NOR flash region to caching-inhibited
  69          * so that flash can be erased/programmed properly.
  70          */
  71
  72         /* Flush d-cache and invalidate i-cache of any FLASH data */
  73         flush_dcache();
  74         invalidate_icache();
  75
  76         /* Invalidate existing TLB entry for NOR flash */
  77         disable_tlb(0);
  78         set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
  79                 (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
  80                 MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  81                 0, 0, BOOKE_PAGESZ_256M, 1);
  82
  83         flash_cs_fixup();
  84
  85         return 0;
  86 }
  87
  88 #if defined(CONFIG_OF_BOARD_SETUP)
  89 void ft_board_setup(void *blob, bd_t *bd)
  90 {
  91 #ifdef CONFIG_PCI
  92         ft_board_pci_setup(blob, bd);
  93 #endif
  94         ft_cpu_setup(blob, bd);
  95 }
  96 #endif