1 | /* |
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2 | * Authorship |
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3 | * ---------- |
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4 | * This software ('beatnik' RTEMS BSP for MVME6100 and MVME5500) was |
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5 | * created by Till Straumann <strauman@slac.stanford.edu>, 2005-2007, |
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6 | * Stanford Linear Accelerator Center, Stanford University. |
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7 | * |
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8 | * Acknowledgement of sponsorship |
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9 | * ------------------------------ |
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10 | * The 'beatnik' BSP was produced by |
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11 | * the Stanford Linear Accelerator Center, Stanford University, |
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12 | * under Contract DE-AC03-76SFO0515 with the Department of Energy. |
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13 | * |
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14 | * Government disclaimer of liability |
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15 | * ---------------------------------- |
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16 | * Neither the United States nor the United States Department of Energy, |
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17 | * nor any of their employees, makes any warranty, express or implied, or |
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18 | * assumes any legal liability or responsibility for the accuracy, |
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19 | * completeness, or usefulness of any data, apparatus, product, or process |
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20 | * disclosed, or represents that its use would not infringe privately owned |
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21 | * rights. |
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22 | * |
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23 | * Stanford disclaimer of liability |
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24 | * -------------------------------- |
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25 | * Stanford University makes no representations or warranties, express or |
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26 | * implied, nor assumes any liability for the use of this software. |
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27 | * |
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28 | * Stanford disclaimer of copyright |
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29 | * -------------------------------- |
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30 | * Stanford University, owner of the copyright, hereby disclaims its |
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31 | * copyright and all other rights in this software. Hence, anyone may |
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32 | * freely use it for any purpose without restriction. |
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33 | * |
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34 | * Maintenance of notices |
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35 | * ---------------------- |
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36 | * In the interest of clarity regarding the origin and status of this |
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37 | * SLAC software, this and all the preceding Stanford University notices |
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38 | * are to remain affixed to any copy or derivative of this software made |
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39 | * or distributed by the recipient and are to be affixed to any copy of |
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40 | * software made or distributed by the recipient that contains a copy or |
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41 | * derivative of this software. |
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42 | * |
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43 | * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 |
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44 | */ |
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45 | |
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46 | #include <bsp.h> |
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47 | #include <stdio.h> |
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48 | #include <inttypes.h> |
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49 | |
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50 | #define STATIC static |
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51 | |
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52 | #include <bsp/flashPgmPvt.h> |
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53 | |
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54 | /* MVME Board Specifica; board status reg. 2 where write-enable is controlled... */ |
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55 | |
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56 | #define SYS_FLASHA_WP (1<<5) |
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57 | #define SYS_FBOOTB_WP (1<<3) |
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58 | #define SYS_FBA_WP_HDR (1<<2) |
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59 | #define SYS_FBOOTB_WP_HDR (1<<1) |
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60 | |
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61 | #define SYS_STATUS_2_REG (1) |
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62 | |
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63 | /* Forward Declarations */ |
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64 | STATIC struct bankdesc * |
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65 | bankcheck(int bank, int quiet); |
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66 | |
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67 | static int |
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68 | flash_wp(int bank, int enbl); |
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69 | |
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70 | STATIC uint32_t |
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71 | read_us_timer(void); |
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72 | |
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73 | /* Global Variables */ |
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74 | |
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75 | /* motload memory map */ |
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76 | static struct bankdesc mvme5500Flash[] = { |
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77 | { 0, 2 }, /* first entry gives number of entries */ |
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78 | { 0xf2000000, 0x08000000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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79 | { 0xff800000, 0x00800000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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80 | }; |
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81 | |
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82 | /* motload memory map */ |
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83 | static struct bankdesc mvme6100Flash[] = { |
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84 | { 0, 2 }, /* first entry gives number of entries */ |
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85 | { 0xf4000000, 0x04000000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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86 | { 0xf8000000, 0x04000000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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87 | }; |
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88 | |
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89 | struct flash_bsp_ops BSP_flashBspOps = { |
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90 | bankcheck : bankcheck, |
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91 | flash_wp : flash_wp, |
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92 | read_us_timer: read_us_timer, |
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93 | }; |
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94 | |
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95 | /* set (enbl:1), clear (enbl:0) or query (enbl:-1) write protection |
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96 | * |
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97 | * RETURNS 0 on success, nonzero on error. |
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98 | */ |
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99 | static int |
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100 | flash_wp(int bank, int enbl) |
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101 | { |
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102 | BSP_BoardType b; |
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103 | A8 p; |
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104 | unsigned char hwp = 0, swp; |
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105 | |
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106 | /* validate 'bank' argument */ |
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107 | if ( !bankcheck( bank, 0 ) ) |
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108 | return -1; |
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109 | |
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110 | switch ( (b=BSP_getBoardType()) ) { |
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111 | default: |
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112 | fprintf(stderr,"Unknown board type %i\n",b); |
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113 | return -1; |
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114 | |
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115 | case MVME5500: |
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116 | /* bit enables both banks; no readback of jumper available */ |
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117 | p = (A8)(BSP_MV64x60_DEV1_BASE + SYS_STATUS_2_REG); |
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118 | swp = SYS_FLASHA_WP; |
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119 | break; |
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120 | |
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121 | case MVME6100: |
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122 | { |
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123 | |
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124 | p = (A8)(BSP_MV64x60_DEV1_BASE + SYS_STATUS_2_REG); |
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125 | if ( 0 == bank ) { |
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126 | hwp = SYS_FBA_WP_HDR; |
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127 | swp = SYS_FLASHA_WP; |
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128 | } else { |
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129 | hwp = SYS_FBOOTB_WP_HDR; |
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130 | swp = SYS_FBOOTB_WP; |
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131 | } |
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132 | if ( enbl && (*p & hwp) ) { |
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133 | fprintf(stderr,"HW write protection enabled (jumper)\n"); |
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134 | return -1; |
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135 | } |
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136 | } |
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137 | break; |
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138 | } |
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139 | if ( -1 == enbl ) { |
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140 | /* query */ |
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141 | return *p & (swp | hwp); |
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142 | } else { |
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143 | if ( enbl ) { |
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144 | *p |= swp; |
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145 | } else { |
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146 | *p &= ~swp; |
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147 | } |
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148 | } |
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149 | return 0; |
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150 | } |
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151 | |
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152 | /* Lookup bank description in table */ |
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153 | STATIC struct bankdesc * |
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154 | bankcheck(int bank, int quiet) |
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155 | { |
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156 | struct bankdesc *b; |
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157 | switch ( BSP_getBoardType() ) { |
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158 | case MVME5500: b = mvme5500Flash; break; |
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159 | case MVME6100: b = mvme6100Flash; break; |
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160 | default: |
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161 | fprintf(stderr,"Unknown/unsupported board type\n"); |
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162 | return 0; |
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163 | } |
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164 | if ( bank >= b->size || bank < 0 ) { |
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165 | if ( !quiet ) |
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166 | fprintf(stderr,"Invalid flash bank #: %i; (too big)\n", bank); |
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167 | return 0; |
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168 | } |
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169 | return b + bank + 1; |
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170 | } |
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171 | |
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172 | STATIC uint32_t read_us_timer(void) |
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173 | { |
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174 | uint32_t now, mhz; |
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175 | |
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176 | /* we burn cycles anyways... */ |
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177 | mhz = BSP_bus_frequency/BSP_time_base_divisor/1000; |
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178 | |
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179 | asm volatile("mftb %0":"=r"(now)); |
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180 | |
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181 | return now/mhz; |
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182 | } |
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