annotate src/cs/system/template/gsm_ds_k5a3281.template @ 78:95ef11e76c5b

src/cs/system/main/gcc: asm code pieced from Citrine
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 20 Jul 2018 06:46:56 +0000
parents b6a5e36de839
children
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1 /*
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2 * Integrated Protocol Stack Linker command file (all components)
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3 *
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4 * Target : ARM
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5 *
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6 * Copyright (c) Texas Instruments 2002, Condat 2002
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7 *
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8 * This version of the linker script template has been concocted
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9 * by Spacefalcon the Outlaw, based on gsm_ds_amd8_lj3.template,
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10 * in order to build the GSM firmware for the memory configuration
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11 * found in the Openmoko GTA0x GSM modem, which consists of the
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12 * K5A3281 flash+RAM MCP plus the 512 KiB of internal RAM in the
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13 * Calypso (PD751992A) chip itself.
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14 */
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15
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16 -c /* Autoinitialize variables at runtime */
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17
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18 /*********************************/
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19 /* SPECIFY THE SYSTEM MEMORY MAP */
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20 /*********************************/
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21
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22 MEMORY
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23 {
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24 /* CS0: Flash 4 Mbytes ****************************************************/
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25 /* Interrupt Vectors Table */
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26 I_MEM (RXI) : org = 0x00000000 len = 0x00000100
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27
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28 /* Boot Sector */
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29 B_MEM (RXI) : org = 0x00000100 len = 0x00001f00
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30
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31 /* Magic Word for Calypso Boot ROM */
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32 MWC_MEM (RXI) : org = 0x00002000 len = 0x00000004 fill = 0x0000001
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33
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34 /* Program Memory */
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35 P_MEM1 (RXI) : org = 0x00004000 len = 0x00000700
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36 P_MEM2 (RXI) : org = 0x00004700 len = 0x00000004
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37 P_MEM3 (RXI) : org = 0x00004704 len = 0x002fb8fc
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38
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39 /* FFS Area */
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40 FFS_MEM (RX) : org = 0x00380000 len = 0x00080000
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41 /**************************************************************************/
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42
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43 /* CS1: External SRAM 1 Mbytes ********************************************/
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44 /* Data Memory */
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45
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46 /*
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47 *** HACK by Spacefalcon the Outlaw ***
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48 *
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49 * The starting Leonardo version (gsm_ds_amd8_lj3.template) had two
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50 * external SRAM regions: D_MEM1 and D_MEM2. When I tried removing
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51 * D_MEM2 and keeping only D_MEM1, the linker started behaving oddly
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52 * in that the sections were emitted in the wrong order, and the
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53 * addresses printed in the map file were bogus. The resulting m0
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54 * images seemed to still work correctly, but I feel that having the
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55 * linker act "correctly" is better.
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56 *
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57 * My current hack-solution is to split the 1 MiB physical XRAM
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58 * into D_MEM1 and D_MEM2 of 512 KiB each. As it happens, the total
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59 * XRAM usage of the current firmware is a little below 512 KiB anyway.
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60 */
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61
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62 D_MEM1 (RW) : org = 0x01000000 len = 0x00080000
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63 D_MEM2 (RW) : org = 0x01080000 len = 0x00080000
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64 /**************************************************************************/
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65
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66 /* CS6: Calypso Internal SRAM 512 kbytes **********************************/
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67 /* Code & Variables Memory */
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68 S_MEM (RXW) : org = 0x00800000 len = 0x00080000
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69 /**************************************************************************/
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70 }
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71
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72 /***********************************************/
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73 /* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */
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74 /***********************************************/
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75
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76 /*
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77 * Since the bootloader directly calls the INT_Initialize() routine located
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78 * in int.s, this int.s code must always be mapped at the same address
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79 * (usually in the second flash sector). Its length is about 0x500 bytes.
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80 * Then comes the code that need to be loaded into the internal RAM.
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81 */
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82
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83 SECTIONS
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84 {
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85 .intvecs : {} > I_MEM /* Interrupt Vectors Table */
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86 .monitor : > B_MEM /* Monitor Constants & Code */
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87 {
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88 $(CONST_BOOT_LIB)
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89 }
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90
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91 .inttext : {} > P_MEM1 /* int.s Code */
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92
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93 .bss_dar : > D_MEM1 /* DAR SWE Variables */
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94 {
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95 $(BSS_DAR_LIB)
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96 }
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97
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98 /*
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99 * The .bss section should not be split to ensure it is initialized to 0
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100 * each time the SW is reset. So the whole .bss is mapped either in D_MEM1
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101 * or in D_MEM2.
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102 *
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103 * Falcon's note for K5A3281: see the comments above where the memory
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104 * regions are defined.
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105 */
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106
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107 .bss : > D_MEM1 | D_MEM2 /* Global & Static Variables */
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108 {
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109 $(BSS_BOOT_LIB)
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110 }
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111
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112 /*
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113 * All .bss sections, which must be mapped in internal RAM must be
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114 * grouped in order to initialized the corresponding memory to 0.
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115 * This initialization is done in int.s file before calling the Nucleus
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116 * routine.
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117 */
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118
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119 GROUP
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120 {
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121 S_D_Mem /* Label of start address of .bss section in Int. RAM */
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122 .DintMem
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123 {
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124
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125 /*
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126 * .bss sections of the application
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127 */
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128
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129 $(BSS_LIBS)
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130
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131 }
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132
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133 API_HISR_stack : {}
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134
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135 E_D_Mem /* Label of end address of .bss section in Int. RAM */
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parents:
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136 } > S_MEM
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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137
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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138 /*
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Mychaela Falconia <falcon@freecalypso.org>
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139 * .text and .const sections which must be mapped in internal RAM.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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140 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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141
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Mychaela Falconia <falcon@freecalypso.org>
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142 .ldfl : {} > P_MEM2 /* Used to know the start load address */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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143 GROUP load = P_MEM3, run = S_MEM
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parents:
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144 {
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parents:
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145 S_P_Mem /* Label of start address of .text & .const sections in Int. RAM */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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146 .PIntMem
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parents:
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147 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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148 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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149 * .text and .const sections of the application.
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parents:
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150 *
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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151 * The .veneer sections correspond exactly to .text:v&n sections
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parents:
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152 * implementing the veneer functions. The .text:v$n -> .veneer
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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153 * translation is performed by PTOOL software when PTOOL_OPTIONS
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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154 * environement variable is set to veneer_section.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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155 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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156
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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157 $(CONST_LIBS)
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parents:
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158
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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159 }
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parents:
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160 E_P_Mem /* Label of end address of .text and .const sections in Int. RAM */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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161 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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162
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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163 /*
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parents:
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164 * The rest of the code is mapped in flash, however the trampolines
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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165 * load address should be consistent with .text.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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166 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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167 COMMENT2START
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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168 `trampolines load = P_MEM3, run = S_MEM
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parents:
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169 COMMENT2END
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parents:
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170
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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171 .text : {} > P_MEM3 /* Code */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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172
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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173 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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174 * The rest of the constants is mapped in flash.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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175 * The .cinit section should not be split.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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176 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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177
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Mychaela Falconia <falcon@freecalypso.org>
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178 .cinit : {} > P_MEM3 /* Initialization Tables */
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179 .const : {} > P_MEM3 /* Constant Data */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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180 KadaAPI : {} > P_MEM3 /* ROMized CLDC */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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181
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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182 .javastack: {} >> D_MEM1 | D_MEM2 /* Java stack */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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183
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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184 .stackandheap : > D_MEM1 /* System Stacks, etc... */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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185 {
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parents:
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186 /* Leave 20 32bit words for register pushes. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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187 . = align(8);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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188 . += 20 * 4;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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189
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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190 /* Stack for abort and/or undefined modes. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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191 exception_stack = .;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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193 /* Leave 38 32bit words for state saving on exceptions. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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194 _xdump_buffer = .;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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195 . += 38 * 4;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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196 . = align(8);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 /* Beginning of stacks and heap area - 2.75 kbytes (int.s) */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 stack_segment = .;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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200 . += 0xB00;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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203 .data : {} > D_MEM1 /* Initialized Data */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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204 .sysmem : {} > D_MEM1 /* Dynamic Memory Allocation Area */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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206 }