arch/blackfin/include/asm/config.h

   1 /*
   2  * config.h - setup common defines for Blackfin boards based on config.h
   3  *
   4  * Copyright (c) 2007-2009 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 /* Some of our defines use this (like CONFIG_SYS_GBL_DATA_ADDR) */
  13 #include <asm-offsets.h>
  14
  15 /* Sanity check CONFIG_BFIN_CPU */
  16 #ifndef CONFIG_BFIN_CPU
  17 # error CONFIG_BFIN_CPU: your board config needs to define this
  18 #endif
  19
  20 #ifndef CONFIG_BFIN_SCRATCH_REG
  21 # define CONFIG_BFIN_SCRATCH_REG retn
  22 #endif
  23
  24 /* Make sure the structure is properly aligned */
  25 #if ((CONFIG_SYS_GBL_DATA_ADDR & -4) != CONFIG_SYS_GBL_DATA_ADDR)
  26 # error CONFIG_SYS_GBL_DATA_ADDR: must be 4 byte aligned
  27 #endif
  28
  29 /* Set default CONFIG_VCO_HZ if need be */
  30 #if !defined(CONFIG_VCO_HZ)
  31 # if (CONFIG_CLKIN_HALF == 0)
  32 #  define CONFIG_VCO_HZ (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)
  33 # else
  34 #  define CONFIG_VCO_HZ ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / 2)
  35 # endif
  36 #endif
  37
  38 /* Set default CONFIG_CCLK_HZ if need be */
  39 #if !defined(CONFIG_CCLK_HZ)
  40 # if (CONFIG_PLL_BYPASS == 0)
  41 #  define CONFIG_CCLK_HZ (CONFIG_VCO_HZ / CONFIG_CCLK_DIV)
  42 # else
  43 #  define CONFIG_CCLK_HZ CONFIG_CLKIN_HZ
  44 # endif
  45 #endif
  46
  47 /* Set default CONFIG_SCLK_HZ if need be */
  48 #if !defined(CONFIG_SCLK_HZ)
  49 # if (CONFIG_PLL_BYPASS == 0)
  50 #  define CONFIG_SCLK_HZ (CONFIG_VCO_HZ / CONFIG_SCLK_DIV)
  51 # else
  52 #  define CONFIG_SCLK_HZ CONFIG_CLKIN_HZ
  53 # endif
  54 #endif
  55
  56 /* Since we use these to program PLL registers directly,
  57  * make sure the values are sane and won't screw us up.
  58  */
  59 #if (CONFIG_VCO_MULT & 0x3F) != CONFIG_VCO_MULT
  60 # error CONFIG_VCO_MULT: Invalid value: must fit in 6 bits (0 - 63)
  61 #endif
  62 #if (CONFIG_CLKIN_HALF & 0x1) != CONFIG_CLKIN_HALF
  63 # error CONFIG_CLKIN_HALF: Invalid value: must be 0 or 1
  64 #endif
  65 #if (CONFIG_PLL_BYPASS & 0x1) != CONFIG_PLL_BYPASS
  66 # error CONFIG_PLL_BYPASS: Invalid value: must be 0 or 1
  67 #endif
  68
  69 /* If we are using KGDB, make sure we defer exceptions */
  70 #ifdef CONFIG_CMD_KGDB
  71 # define CONFIG_EXCEPTION_DEFER 1
  72 #endif
  73
  74 /* Using L1 scratch pad makes sense for everyone by default. */
  75 #ifndef CONFIG_LINUX_CMDLINE_ADDR
  76 # define CONFIG_LINUX_CMDLINE_ADDR L1_SRAM_SCRATCH
  77 #endif
  78 #ifndef CONFIG_LINUX_CMDLINE_SIZE
  79 # define CONFIG_LINUX_CMDLINE_SIZE L1_SRAM_SCRATCH_SIZE
  80 #endif
  81
  82 /* Set default SPI flash CS to the one we boot from */
  83 #if defined(CONFIG_ENV_IS_IN_SPI_FLASH) && !defined(CONFIG_ENV_SPI_CS)
  84 # define CONFIG_ENV_SPI_CS BFIN_BOOT_SPI_SSEL
  85 #endif
  86
  87 /* We need envcrc to embed the env into LDRs */
  88 #ifdef CONFIG_ENV_IS_EMBEDDED_IN_LDR
  89 # define CONFIG_BUILD_ENVCRC
  90 #endif
  91
  92 /* Default/common Blackfin memory layout */
  93 #ifndef CONFIG_SYS_SDRAM_BASE
  94 # define CONFIG_SYS_SDRAM_BASE 0
  95 #endif
  96 #ifndef CONFIG_SYS_MAX_RAM_SIZE
  97 # define CONFIG_SYS_MAX_RAM_SIZE (CONFIG_MEM_SIZE * 1024 * 1024)
  98 #endif
  99 #ifndef CONFIG_SYS_MONITOR_BASE
 100 # if CONFIG_SYS_MAX_RAM_SIZE
 101 #  define CONFIG_SYS_MONITOR_BASE (CONFIG_SYS_MAX_RAM_SIZE - CONFIG_SYS_MONITOR_LEN)
 102 # else
 103 #  define CONFIG_SYS_MONITOR_BASE 0
 104 # endif
 105 #endif
 106 #ifndef CONFIG_SYS_MALLOC_BASE
 107 # define CONFIG_SYS_MALLOC_BASE (CONFIG_SYS_MONITOR_BASE - CONFIG_SYS_MALLOC_LEN)
 108 #endif
 109 #ifndef CONFIG_SYS_GBL_DATA_ADDR
 110 # define CONFIG_SYS_GBL_DATA_ADDR (CONFIG_SYS_MALLOC_BASE - GENERATED_GBL_DATA_SIZE)
 111 #endif
 112 #ifndef CONFIG_STACKBASE
 113 # define CONFIG_STACKBASE (CONFIG_SYS_GBL_DATA_ADDR - 4)
 114 #endif
 115 #ifndef CONFIG_SYS_MEMTEST_START
 116 # define CONFIG_SYS_MEMTEST_START 0
 117 #endif
 118 #ifndef CONFIG_SYS_MEMTEST_END
 119 # define CONFIG_SYS_MEMTEST_END (CONFIG_STACKBASE - 8192 + 4)
 120 #endif
 121
 122 /* Check to make sure everything fits in external RAM */
 123 #if CONFIG_SYS_MAX_RAM_SIZE && \
 124     ((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) > CONFIG_SYS_MAX_RAM_SIZE)
 125 # error Memory Map does not fit into configuration
 126 #endif
 127
 128 /* Default/common Blackfin environment settings */
 129 #ifndef CONFIG_LOADADDR
 130 # define CONFIG_LOADADDR 0x1000000
 131 #endif
 132 #ifndef CONFIG_SYS_LOAD_ADDR
 133 # define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
 134 #endif
 135 #ifndef CONFIG_SYS_BOOTM_LEN
 136 # define CONFIG_SYS_BOOTM_LEN 0x4000000
 137 #endif
 138 #ifndef CONFIG_SYS_PROMPT
 139 # define CONFIG_SYS_PROMPT "bfin> "
 140 #endif
 141 #ifndef CONFIG_SYS_CBSIZE
 142 # define CONFIG_SYS_CBSIZE 1024
 143 #elif defined(CONFIG_CMD_KGDB) && CONFIG_SYS_CBSIZE < 1024
 144 # error "kgdb needs cbsize to be >= 1024"
 145 #endif
 146 #ifndef CONFIG_SYS_BARGSIZE
 147 # define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
 148 #endif
 149 #ifndef CONFIG_SYS_PBSIZE
 150 # define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
 151 #endif
 152 #ifndef CONFIG_SYS_MAXARGS
 153 # define CONFIG_SYS_MAXARGS 16
 154 #endif
 155 #if defined(CONFIG_SYS_HZ)
 156 # if (CONFIG_SYS_HZ != 1000)
 157 #  warning "CONFIG_SYS_HZ must always be 1000"
 158 # endif
 159 # undef CONFIG_SYS_HZ
 160 #endif
 161 #define CONFIG_SYS_HZ 1000
 162 #ifndef CONFIG_SYS_BAUDRATE_TABLE
 163 # define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
 164 #endif
 165
 166 #endif