1 | #!/usr/bin/env python |
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2 | |
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3 | from math import log, ceil |
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4 | from mapping import * |
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5 | |
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6 | ####################################################################################### |
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7 | # file : arch.py (for the tsar_generic_iob architecture) |
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8 | # date : may 2014 |
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9 | # author : Alain Greiner |
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10 | ####################################################################################### |
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11 | # This file contains a mapping generator for the "tsar_generic_iob" platform. |
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12 | # This includes both the hardware architecture (clusters, processors, peripherals, |
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13 | # physical space segmentation) and the mapping of all kernel objects (global vsegs). |
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14 | # This platform includes 6 external peripherals, accessible through two IO_Bridge |
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15 | # components located in cluster [0,0] and cluster [x_size-1, y_size-1]. |
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16 | # Available peripherals are: TTY, BDV, FBF, ROM, NIC, CMA. |
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17 | # |
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18 | # The "constructor" parameters are: |
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19 | # - x_size : number of clusters in a row |
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20 | # - y_size : number of clusters in a column |
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21 | # - nb_procs : number of processors per cluster |
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22 | # |
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23 | # The "hidden" platform parameters are: |
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24 | # - nb_ttys : number of TTY channels |
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25 | # - nb_nics : number of NIC channels |
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26 | # - fbf_width : frame_buffer width = frame_buffer heigth |
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27 | # - x_io : cluster_io x coordinate |
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28 | # - y_io : cluster_io y coordinate |
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29 | # - x_width : number of bits for x coordinate |
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30 | # - y_width : number of bits for y coordinate |
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31 | # - paddr_width : number of bits for physical address |
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32 | # - irq_per_proc : number of input IRQs per processor |
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33 | # - use_ramdisk : use a ramdisk when True |
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34 | # - peri_increment : address increment for replicated peripherals |
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35 | #################################################################################### |
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36 | |
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37 | ######################## |
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38 | def arch( x_size = 2, |
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39 | y_size = 2, |
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40 | nb_procs = 2 ): |
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41 | |
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42 | ### define architecture constants |
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43 | |
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44 | nb_ttys = 1 |
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45 | nb_nics = 2 |
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46 | fbf_width = 1024 |
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47 | x_io = 0 |
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48 | y_io = 0 |
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49 | p_width = int(ceil(log(nb_procs, 2))) |
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50 | x_width = 4 |
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51 | y_width = 4 |
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52 | paddr_width = 40 |
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53 | irq_per_proc = 4 |
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54 | use_ramdisk = False |
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55 | peri_increment = 0x10000 |
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56 | |
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57 | ### parameters checking |
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58 | |
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59 | assert( nb_procs <= (1 << p_width) ) |
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60 | |
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61 | assert( (x_size == 1) or (x_size == 2) or (x_size == 4) |
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62 | or (y_size == 8) or (x_size == 16) ) |
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63 | |
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64 | assert( (y_size == 1) or (y_size == 2) or (y_size == 4) |
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65 | or (y_size == 8) or (y_size == 16) ) |
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66 | |
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67 | assert( nb_ttys == 1 ) |
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68 | |
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69 | assert( ((x_io == 0) and (y_io == 0)) or |
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70 | ((x_io == x_size-1) and (y_io == y_size-1)) ) |
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71 | |
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72 | platform_name = 'tsar_iob_%d_%d_%d' % ( x_size, y_size, nb_procs ) |
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73 | |
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74 | ### define physical segments |
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75 | |
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76 | ram_base = 0x0000000000 |
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77 | ram_size = 0x4000000 # 64 Mbytes |
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78 | |
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79 | xcu_base = 0x00B0000000 |
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80 | xcu_size = 0x1000 # 4 Kbytes |
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81 | |
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82 | dma_base = 0x00B1000000 |
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83 | dma_size = 0x1000 * nb_procs # 4 Kbytes * nb_procs |
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84 | |
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85 | mmc_base = 0x00B2000000 |
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86 | mmc_size = 0x1000 # 4 Kbytes |
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87 | |
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88 | offset_io = ((x_io << y_width) + y_io) << (paddr_width - x_width - y_width) |
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89 | |
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90 | bdv_base = 0x00B3000000 + offset_io |
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91 | bdv_size = 0x1000 # 4kbytes |
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92 | |
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93 | tty_base = 0x00B4000000 + offset_io |
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94 | tty_size = 0x4000 # 16 Kbytes |
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95 | |
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96 | nic_base = 0x00B5000000 + offset_io |
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97 | nic_size = 0x80000 # 512 kbytes |
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98 | |
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99 | cma_base = 0x00B6000000 + offset_io |
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100 | cma_size = 0x1000 * 2 * nb_nics # 4 kbytes * 2 * nb_nics |
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101 | |
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102 | fbf_base = 0x00B7000000 + offset_io |
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103 | fbf_size = fbf_width * fbf_width # fbf_width * fbf_width bytes |
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104 | |
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105 | pic_base = 0x00B8000000 + offset_io |
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106 | pic_size = 0x1000 # 4 Kbytes |
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107 | |
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108 | iob_base = 0x00BE000000 + offset_io |
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109 | iob_size = 0x1000 # 4kbytes |
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110 | |
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111 | rom_base = 0x00BFC00000 + offset_io |
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112 | rom_size = 0x4000 # 16 Kbytes |
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113 | |
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114 | ### define bootloader vsegs base addresses |
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115 | |
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116 | boot_mapping_vbase = 0x00000000 # ident |
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117 | boot_mapping_size = 0x00010000 # 64 Kbytes |
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118 | |
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119 | boot_code_vbase = 0x00010000 # ident |
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120 | boot_code_size = 0x00020000 # 128 Kbytes |
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121 | |
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122 | boot_data_vbase = 0x00030000 # ident |
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123 | boot_data_size = 0x00010000 # 64 Kbytes |
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124 | |
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125 | boot_buffer_vbase = 0x00040000 # ident |
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126 | boot_buffer_size = 0x00060000 # 384 Kbytes |
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127 | |
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128 | boot_stack_vbase = 0x000A0000 # ident |
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129 | boot_stack_size = 0x00050000 # 320 Kbytes |
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130 | |
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131 | ### define kernel vsegs base addresses |
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132 | |
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133 | kernel_code_vbase = 0x80000000 |
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134 | kernel_code_size = 0x00020000 # 128 Kbytes |
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135 | |
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136 | kernel_data_vbase = 0x80020000 |
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137 | kernel_data_size = 0x00060000 # 384 Kbytes |
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138 | |
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139 | kernel_uncdata_vbase = 0x80080000 |
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140 | kernel_uncdata_size = 0x00040000 # 256 Kbytes |
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141 | |
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142 | kernel_init_vbase = 0x800C0000 |
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143 | kernel_init_size = 0x00010000 # 64 Kbytes |
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144 | |
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145 | kernel_sched_vbase = 0xF0000000 # distributed in all clusters |
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146 | kernel_sched_size = 0x1000 * nb_procs # 4 kbytes per processor |
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147 | |
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148 | ### create mapping |
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149 | |
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150 | mapping = Mapping( name = platform_name, |
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151 | x_size = x_size, |
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152 | y_size = y_size, |
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153 | procs_max = nb_procs, |
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154 | x_width = x_width, |
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155 | y_width = y_width, |
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156 | p_width = p_width, |
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157 | paddr_width = paddr_width, |
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158 | coherence = True, |
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159 | irq_per_proc = irq_per_proc, |
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160 | use_ramdisk = use_ramdisk, |
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161 | x_io = x_io, |
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162 | y_io = y_io, |
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163 | peri_increment = peri_increment ) |
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164 | |
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165 | ### external peripherals (accessible in cluster[0,0] only for this mapping) |
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166 | |
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167 | iob = mapping.addPeriph( 'IOB', base = iob_base, size = iob_size, ptype = 'IOB' ) |
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168 | |
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169 | bdv = mapping.addPeriph( 'BDV', base = bdv_base, size = bdv_size, ptype = 'IOC', subtype = 'BDV' ) |
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170 | |
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171 | tty = mapping.addPeriph( 'TTY', base = tty_base, size = tty_size, ptype = 'TTY', channels = nb_ttys ) |
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172 | |
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173 | nic = mapping.addPeriph( 'NIC', base = nic_base, size = nic_size, ptype = 'NIC', channels = nb_nics ) |
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174 | |
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175 | cma = mapping.addPeriph( 'CMA', base = cma_base, size = cma_size, ptype = 'CMA', channels = 2*nb_nics ) |
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176 | |
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177 | fbf = mapping.addPeriph( 'FBF', base = fbf_base, size = fbf_size, ptype = 'FBF', arg = fbf_width ) |
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178 | |
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179 | rom = mapping.addPeriph( 'ROM', base = rom_base, size = rom_size, ptype = 'ROM' ) |
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180 | |
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181 | pic = mapping.addPeriph( 'PIC', base = pic_base, size = pic_size, ptype = 'PIC', channels = 32 ) |
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182 | |
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183 | mapping.addIrq( pic, index = 0, isrtype = 'ISR_NIC_RX', channel = 0 ) |
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184 | mapping.addIrq( pic, index = 1, isrtype = 'ISR_NIC_RX', channel = 1 ) |
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185 | |
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186 | mapping.addIrq( pic, index = 2, isrtype = 'ISR_NIC_TX', channel = 0 ) |
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187 | mapping.addIrq( pic, index = 3, isrtype = 'ISR_NIC_TX', channel = 1 ) |
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188 | |
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189 | mapping.addIrq( pic, index = 4, isrtype = 'ISR_CMA' , channel = 0 ) |
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190 | mapping.addIrq( pic, index = 5, isrtype = 'ISR_CMA' , channel = 1 ) |
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191 | mapping.addIrq( pic, index = 6, isrtype = 'ISR_CMA' , channel = 2 ) |
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192 | mapping.addIrq( pic, index = 7, isrtype = 'ISR_CMA' , channel = 3 ) |
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193 | |
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194 | mapping.addIrq( pic, index = 8, isrtype = 'ISR_BDV' , channel = 0 ) |
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195 | |
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196 | mapping.addIrq( pic, index = 9, isrtype = 'ISR_TTY_RX', channel = 0 ) |
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197 | |
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198 | ### hardware components replicated in all clusters |
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199 | |
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200 | for x in xrange( x_size ): |
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201 | for y in xrange( y_size ): |
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202 | cluster_xy = (x << y_width) + y; |
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203 | offset = cluster_xy << (paddr_width - x_width - y_width) |
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204 | |
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205 | ram = mapping.addRam( 'RAM', base = ram_base + offset, size = ram_size ) |
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206 | |
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207 | mmc = mapping.addPeriph( 'MMC', base = mmc_base + offset, size = mmc_size, |
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208 | ptype = 'MMC' ) |
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209 | |
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210 | dma = mapping.addPeriph( 'DMA', base = dma_base + offset, size = dma_size, |
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211 | ptype = 'DMA', channels = nb_procs ) |
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212 | |
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213 | xcu = mapping.addPeriph( 'XCU', base = xcu_base + offset, size = xcu_size, |
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214 | ptype = 'XCU', channels = nb_procs * irq_per_proc, arg = 16 ) |
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215 | |
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216 | # MMC IRQ replicated in all clusters |
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217 | mapping.addIrq( xcu, index = 0, isrtype = 'ISR_MMC' ) |
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218 | |
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219 | # processors |
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220 | for p in xrange ( nb_procs ): |
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221 | mapping.addProc( x, y, p ) |
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222 | |
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223 | ### global vsegs for boot_loader / identity mapping |
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224 | |
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225 | mapping.addGlobal( 'seg_boot_mapping' , boot_mapping_vbase , boot_mapping_size , 'C_W_', |
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226 | vtype = 'BLOB' , x = 0, y = 0, pseg = 'RAM', identity = True ) |
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227 | |
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228 | mapping.addGlobal( 'seg_boot_code' , boot_code_vbase , boot_code_size , 'CXW_', |
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229 | vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM', identity = True ) |
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230 | |
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231 | mapping.addGlobal( 'seg_boot_data' , boot_data_vbase , boot_data_size , 'C_W_', |
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232 | vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM', identity = True ) |
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233 | |
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234 | mapping.addGlobal( 'seg_boot_buffer' , boot_buffer_vbase , boot_buffer_size , 'C_W_', |
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235 | vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM', identity = True ) |
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236 | |
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237 | mapping.addGlobal( 'seg_boot_stack' , boot_stack_vbase , boot_stack_size , 'C_W_', |
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238 | vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM', identity = True ) |
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239 | |
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240 | ### global vsegs for kernel |
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241 | |
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242 | mapping.addGlobal( 'seg_kernel_code' , kernel_code_vbase , kernel_code_size , 'CXW_', |
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243 | vtype = 'ELF' , x = 0, y = 0, pseg = 'RAM', binpath = 'build/kernel/kernel.elf' ) |
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244 | |
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245 | mapping.addGlobal( 'seg_kernel_data' , kernel_data_vbase , kernel_data_size , 'C_W_', |
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246 | vtype = 'ELF' , x = 0, y = 0, pseg = 'RAM', binpath = 'build/kernel/kernel.elf' ) |
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247 | |
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248 | mapping.addGlobal( 'seg_kernel_uncdata', kernel_uncdata_vbase, kernel_uncdata_size, '__W_', |
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249 | vtype = 'ELF' , x = 0, y = 0, pseg = 'RAM', binpath = 'build/kernel/kernel.elf' ) |
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250 | |
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251 | mapping.addGlobal( 'seg_kernel_init' , kernel_init_vbase , kernel_init_size , 'CXW_', |
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252 | vtype = 'ELF' , x = 0, y = 0, pseg = 'RAM', binpath = 'build/kernel/kernel.elf' ) |
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253 | |
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254 | ### global vsegs for external peripherals / identity mapping |
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255 | |
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256 | mapping.addGlobal( 'seg_iob', iob_base, iob_size, '__W_', |
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257 | vtype = 'PERI', x = 0, y = 0, pseg = 'IOB', identity = True ) |
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258 | |
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259 | mapping.addGlobal( 'seg_bdv', bdv_base, bdv_size, '__W_', |
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260 | vtype = 'PERI', x = 0, y = 0, pseg = 'BDV', identity = True ) |
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261 | |
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262 | mapping.addGlobal( 'seg_tty', tty_base, tty_size, '__W_', |
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263 | vtype = 'PERI', x = 0, y = 0, pseg = 'TTY', identity = True ) |
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264 | |
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265 | mapping.addGlobal( 'seg_nic', nic_base, nic_size, '__W_', |
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266 | vtype = 'PERI', x = 0, y = 0, pseg = 'NIC', identity = True ) |
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267 | |
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268 | mapping.addGlobal( 'seg_cma', cma_base, cma_size, '__W_', |
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269 | vtype = 'PERI', x = 0, y = 0, pseg = 'CMA', identity = True ) |
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270 | |
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271 | mapping.addGlobal( 'seg_fbf', fbf_base, fbf_size, '__W_', |
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272 | vtype = 'PERI', x = 0, y = 0, pseg = 'FBF', identity = True ) |
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273 | |
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274 | mapping.addGlobal( 'seg_pic', pic_base, pic_size, '__W_', |
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275 | vtype = 'PERI', x = 0, y = 0, pseg = 'PIC', identity = True ) |
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276 | |
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277 | mapping.addGlobal( 'seg_rom', rom_base, rom_size, 'CXW_', |
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278 | vtype = 'PERI', x = 0, y = 0, pseg = 'ROM', identity = True ) |
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279 | |
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280 | ### Global vsegs for replicated peripherals, and for schedulers |
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281 | ### name is indexed by (x,y), base address is incremented by (cluster_xy * peri_increment) |
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282 | |
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283 | for x in xrange( x_size ): |
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284 | for y in xrange( y_size ): |
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285 | cluster_xy = (x << y_width) + y; |
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286 | offset = cluster_xy * peri_increment |
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287 | |
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288 | mapping.addGlobal( 'seg_xcu_%d_%d' %(x,y), xcu_base + offset, xcu_size, |
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289 | '__W_', vtype = 'PERI' , x = x , y = y , pseg = 'XCU' ) |
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290 | |
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291 | mapping.addGlobal( 'seg_dma_%d_%d' %(x,y), dma_base + offset, dma_size, |
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292 | '__W_', vtype = 'PERI' , x = x , y = y , pseg = 'DMA' ) |
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293 | |
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294 | mapping.addGlobal( 'seg_mmc_%d_%d' %(x,y), mmc_base + offset, mmc_size, |
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295 | '__W_', vtype = 'PERI' , x = x , y = y , pseg = 'MMC' ) |
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296 | |
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297 | mapping.addGlobal( 'seg_sched_%d_%d' %(x,y), kernel_sched_vbase + offset, kernel_sched_size, |
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298 | 'C_W_', vtype = 'SCHED', x = x , y = y , pseg = 'RAM' ) |
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299 | |
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300 | ### return mapping ### |
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301 | |
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302 | return mapping |
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303 | |
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304 | ################################# platform test ####################################################### |
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305 | |
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306 | if __name__ == '__main__': |
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307 | |
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308 | mapping = arch( x_size = 2, |
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309 | y_size = 2, |
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310 | nb_procs = 2 ) |
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311 | |
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312 | # print mapping.netbsd_dts() |
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313 | |
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314 | print mapping.xml() |
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315 | |
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316 | # print mapping.giet_vsegs() |
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317 | |
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318 | |
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319 | # Local Variables: |
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320 | # tab-width: 4; |
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321 | # c-basic-offset: 4; |
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322 | # c-file-offsets:((innamespace . 0)(inline-open . 0)); |
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323 | # indent-tabs-mode: nil; |
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324 | # End: |
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325 | # |
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326 | # vim: filetype=python:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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327 | |
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