include/asm-blackfin/blackfin-config-post.h

   1 /*
   2  * blackfin-config-post.h - setup common defines for Blackfin boards based on config.h
   3  *
   4  * Copyright (c) 2007 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #ifndef __ASM_BLACKFIN_CONFIG_POST_H__
  10 #define __ASM_BLACKFIN_CONFIG_POST_H__
  11
  12 /* Check to make sure everything fits in external RAM */
  13 #if ((CFG_MONITOR_BASE + CFG_MONITOR_LEN) > CFG_MAX_RAM_SIZE)
  14 # error Memory Map does not fit into configuration
  15 #endif
  16
  17 /* Sanity check CONFIG_BFIN_CPU */
  18 #ifndef CONFIG_BFIN_CPU
  19 # error CONFIG_BFIN_CPU: your board config needs to define this
  20 #endif
  21
  22 /* Make sure the structure is properly aligned */
  23 #if ((CFG_GBL_DATA_ADDR & -4) != CFG_GBL_DATA_ADDR)
  24 # error CFG_GBL_DATA_ADDR: must be 4 byte aligned
  25 #endif
  26
  27 /* Set default CONFIG_VCO_HZ if need be */
  28 #if !defined(CONFIG_VCO_HZ)
  29 # if (CONFIG_CLKIN_HALF == 0)
  30 #  define CONFIG_VCO_HZ (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)
  31 # else
  32 #  define CONFIG_VCO_HZ ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / 2)
  33 # endif
  34 #endif
  35
  36 /* Set default CONFIG_CCLK_HZ if need be */
  37 #if !defined(CONFIG_CCLK_HZ)
  38 # if (CONFIG_PLL_BYPASS == 0)
  39 #  define CONFIG_CCLK_HZ (CONFIG_VCO_HZ / CONFIG_CCLK_DIV)
  40 # else
  41 #  define CONFIG_CCLK_HZ CONFIG_CLKIN_HZ
  42 # endif
  43 #endif
  44
  45 /* Set default CONFIG_SCLK_HZ if need be */
  46 #if !defined(CONFIG_SCLK_HZ)
  47 # if (CONFIG_PLL_BYPASS == 0)
  48 #  define CONFIG_SCLK_HZ (CONFIG_VCO_HZ / CONFIG_SCLK_DIV)
  49 # else
  50 #  define CONFIG_SCLK_HZ CONFIG_CLKIN_HZ
  51 # endif
  52 #endif
  53
  54 /* Since we use these to program PLL registers directly,
  55  * make sure the values are sane and won't screw us up.
  56  */
  57 #if (CONFIG_VCO_MULT & 0x3F) != CONFIG_VCO_MULT
  58 # error CONFIG_VCO_MULT: Invalid value: must fit in 6 bits (0 - 63)
  59 #endif
  60 #if (CONFIG_CLKIN_HALF & 0x1) != CONFIG_CLKIN_HALF
  61 # error CONFIG_CLKIN_HALF: Invalid value: must be 0 or 1
  62 #endif
  63 #if (CONFIG_PLL_BYPASS & 0x1) != CONFIG_PLL_BYPASS
  64 # error CONFIG_PLL_BYPASS: Invalid value: must be 0 or 1
  65 #endif
  66
  67 /* Using L1 scratch pad makes sense for everyone by default. */
  68 #ifndef CMD_LINE_ADDR
  69 # define CMD_LINE_ADDR L1_SRAM_SCRATCH
  70 #endif
  71
  72 #endif