board/xes/xpedite520x/xpedite520x.c

   1 /*
   2  * Copyright 2008 Extreme Engineering Solutions, Inc.
   3  * Copyright 2004, 2007 Freescale Semiconductor, Inc.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <pci.h>
  11 #include <asm/processor.h>
  12 #include <asm/immap_85xx.h>
  13 #include <asm/fsl_pci.h>
  14 #include <asm/io.h>
  15 #include <asm/cache.h>
  16 #include <asm/mmu.h>
  17 #include <libfdt.h>
  18 #include <fdt_support.h>
  19 #include <pca953x.h>
  20
  21 extern void ft_board_pci_setup(void *blob, bd_t *bd);
  22
  23 static void flash_cs_fixup(void)
  24 {
  25         int flash_sel;
  26
  27         /*
  28          * Print boot dev and swap flash flash chip selects if booted from 2nd
  29          * flash.  Swapping chip selects presents user with a common memory
  30          * map regardless of which flash was booted from.
  31          */
  32         flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
  33                         CONFIG_SYS_PCA953X_FLASH_PASS_CS));
  34         printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1);
  35
  36         if (flash_sel) {
  37                 set_lbc_br(0, CONFIG_SYS_BR1_PRELIM);
  38                 set_lbc_or(0, CONFIG_SYS_OR1_PRELIM);
  39
  40                 set_lbc_br(1, CONFIG_SYS_BR0_PRELIM);
  41                 set_lbc_or(1, CONFIG_SYS_OR0_PRELIM);
  42         }
  43 }
  44
  45 int board_early_init_r(void)
  46 {
  47         /* Initialize PCA9557 devices */
  48         pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0);
  49         pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0);
  50
  51         /*
  52          * Remap NOR flash region to caching-inhibited
  53          * so that flash can be erased/programmed properly.
  54          */
  55
  56         /* Flush d-cache and invalidate i-cache of any FLASH data */
  57         flush_dcache();
  58         invalidate_icache();
  59
  60         /* Invalidate existing TLB entry for NOR flash */
  61         disable_tlb(0);
  62         set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
  63                 (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
  64                 MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
  65                 0, 0, BOOKE_PAGESZ_256M, 1);
  66
  67         flash_cs_fixup();
  68
  69         return 0;
  70 }
  71
  72 #if defined(CONFIG_OF_BOARD_SETUP)
  73 void ft_board_setup(void *blob, bd_t *bd)
  74 {
  75 #ifdef CONFIG_PCI
  76         ft_board_pci_setup(blob, bd);
  77 #endif
  78         ft_cpu_setup(blob, bd);
  79 }
  80 #endif