board/xes/xpedite550x/xpedite550x.c

   1 /*
   2  * Copyright 2010 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
  35 DECLARE_GLOBAL_DATA_PTR;
  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_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
  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         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)
  91 void 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
 100 #ifdef CONFIG_MP
 101 extern void cpu_mp_lmb_reserve(struct lmb *lmb);
 102
 103 void board_lmb_reserve(struct lmb *lmb)
 104 {
 105         cpu_mp_lmb_reserve(lmb);
 106 }
 107 #endif