LXR uboot/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/* U-Boot wants this config name */
  25#define CONFIG_SYS_CACHELINE_SIZE L1_CACHE_BYTES
  26
  27/* Make sure the structure is properly aligned */
  28#if ((CONFIG_SYS_GBL_DATA_ADDR & -4) != CONFIG_SYS_GBL_DATA_ADDR)
  29# error CONFIG_SYS_GBL_DATA_ADDR: must be 4 byte aligned
  30#endif
  31
  32/* Set default CONFIG_VCO_HZ if need be */
  33#if !defined(CONFIG_VCO_HZ)
  34# if (CONFIG_CLKIN_HALF == 0)
  35#  define CONFIG_VCO_HZ (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)
  36# else
  37#  define CONFIG_VCO_HZ ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / 2)
  38# endif
  39#endif
  40
  41/* Set default CONFIG_CCLK_HZ if need be */
  42#if !defined(CONFIG_CCLK_HZ)
  43# if (CONFIG_PLL_BYPASS == 0)
  44#  define CONFIG_CCLK_HZ (CONFIG_VCO_HZ / CONFIG_CCLK_DIV)
  45# else
  46#  define CONFIG_CCLK_HZ CONFIG_CLKIN_HZ
  47# endif
  48#endif
  49
  50/* Set default CONFIG_SCLK_HZ if need be */
  51#if !defined(CONFIG_SCLK_HZ)
  52# if (CONFIG_PLL_BYPASS == 0)
  53#  define CONFIG_SCLK_HZ (CONFIG_VCO_HZ / CONFIG_SCLK_DIV)
  54# else
  55#  define CONFIG_SCLK_HZ CONFIG_CLKIN_HZ
  56# endif
  57#endif
  58
  59/* Since we use these to program PLL registers directly,
  60 * make sure the values are sane and won't screw us up.
  61 */
  62#if (CONFIG_VCO_MULT & 0x3F) != CONFIG_VCO_MULT
  63# error CONFIG_VCO_MULT: Invalid value: must fit in 6 bits (0 - 63)
  64#endif
  65#if (CONFIG_CLKIN_HALF & 0x1) != CONFIG_CLKIN_HALF
  66# error CONFIG_CLKIN_HALF: Invalid value: must be 0 or 1
  67#endif
  68#if (CONFIG_PLL_BYPASS & 0x1) != CONFIG_PLL_BYPASS
  69# error CONFIG_PLL_BYPASS: Invalid value: must be 0 or 1
  70#endif
  71
  72/* If we are using KGDB, make sure we defer exceptions */
  73#ifdef CONFIG_CMD_KGDB
  74# define CONFIG_EXCEPTION_DEFER 1
  75#endif
  76
  77/* Using L1 scratch pad makes sense for everyone by default. */
  78#ifndef CONFIG_LINUX_CMDLINE_ADDR
  79# define CONFIG_LINUX_CMDLINE_ADDR L1_SRAM_SCRATCH
  80#endif
  81#ifndef CONFIG_LINUX_CMDLINE_SIZE
  82# define CONFIG_LINUX_CMDLINE_SIZE L1_SRAM_SCRATCH_SIZE
  83#endif
  84
  85/* Set default SPI flash CS to the one we boot from */
  86#if defined(CONFIG_ENV_IS_IN_SPI_FLASH) && !defined(CONFIG_ENV_SPI_CS)
  87# define CONFIG_ENV_SPI_CS BFIN_BOOT_SPI_SSEL
  88#endif
  89
  90/* We need envcrc to embed the env into LDRs */
  91#ifdef CONFIG_ENV_IS_EMBEDDED_IN_LDR
  92# define CONFIG_BUILD_ENVCRC
  93#endif
  94
  95/* Default/common Blackfin memory layout */
  96#ifndef CONFIG_SYS_SDRAM_BASE
  97# define CONFIG_SYS_SDRAM_BASE 0
  98#endif
  99#ifndef CONFIG_SYS_MAX_RAM_SIZE
 100# define CONFIG_SYS_MAX_RAM_SIZE (CONFIG_MEM_SIZE * 1024 * 1024)
 101#endif
 102#ifndef CONFIG_SYS_MONITOR_BASE
 103# if CONFIG_SYS_MAX_RAM_SIZE
 104#  define CONFIG_SYS_MONITOR_BASE (CONFIG_SYS_MAX_RAM_SIZE - CONFIG_SYS_MONITOR_LEN)
 105# else
 106#  define CONFIG_SYS_MONITOR_BASE 0
 107# endif
 108#endif
 109#ifndef CONFIG_SYS_MALLOC_BASE
 110# define CONFIG_SYS_MALLOC_BASE (CONFIG_SYS_MONITOR_BASE - CONFIG_SYS_MALLOC_LEN)
 111#endif
 112#ifndef CONFIG_STACKBASE
 113# define CONFIG_STACKBASE (CONFIG_SYS_MALLOC_BASE - 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#ifndef CONFIG_SYS_POST_WORD_ADDR
 122# define CONFIG_SYS_POST_WORD_ADDR (L1_DATA_B_SRAM + L1_DATA_B_SRAM_SIZE - 4)
 123#endif
 124
 125/* Check to make sure everything fits in external RAM */
 126#if CONFIG_SYS_MAX_RAM_SIZE && \
 127    ((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) > CONFIG_SYS_MAX_RAM_SIZE)
 128# error Memory Map does not fit into configuration
 129#endif
 130
 131/* Default/common Blackfin environment settings */
 132#ifndef CONFIG_LOADADDR
 133# define CONFIG_LOADADDR 0x1000000
 134#endif
 135#ifndef CONFIG_SYS_LOAD_ADDR
 136# define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
 137#endif
 138#ifndef CONFIG_SYS_BOOTM_LEN
 139# define CONFIG_SYS_BOOTM_LEN 0x4000000
 140#endif
 141#ifndef CONFIG_SYS_PROMPT
 142# define CONFIG_SYS_PROMPT "bfin> "
 143#endif
 144#ifndef CONFIG_SYS_CBSIZE
 145# define CONFIG_SYS_CBSIZE 1024
 146#elif defined(CONFIG_CMD_KGDB) && CONFIG_SYS_CBSIZE < 1024
 147# error "kgdb needs cbsize to be >= 1024"
 148#endif
 149#ifndef CONFIG_SYS_BARGSIZE
 150# define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
 151#endif
 152#ifndef CONFIG_SYS_PBSIZE
 153# define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
 154#endif
 155#ifndef CONFIG_SYS_MAXARGS
 156# define CONFIG_SYS_MAXARGS 16
 157#endif
 158#if defined(CONFIG_SYS_HZ)
 159# if (CONFIG_SYS_HZ != 1000)
 160#  warning "CONFIG_SYS_HZ must always be 1000"
 161# endif
 162# undef CONFIG_SYS_HZ
 163#endif
 164#define CONFIG_SYS_HZ 1000
 165
 166/* Blackfin POST tests */
 167#ifdef CONFIG_POST_BSPEC1_GPIO_LEDS
 168# define CONFIG_POST_BSPEC1 \
 169        { \
 170                "LED test", "led", "This test verifies LEDs on the board.", \
 171                POST_MEM | POST_ALWAYS, &led_post_test, NULL, NULL, \
 172                CONFIG_SYS_POST_BSPEC1, \
 173        }
 174#endif
 175#ifdef CONFIG_POST_BSPEC2_GPIO_BUTTONS
 176# define CONFIG_POST_BSPEC2 \
 177        { \
 178                "Button test", "button", "This test verifies buttons on the board.", \
 179                POST_MEM | POST_ALWAYS, &button_post_test, NULL, NULL, \
 180                CONFIG_SYS_POST_BSPEC2, \
 181        }
 182#endif
 183
 184#endif
 185