FreeCalypso > hg > freecalypso-sw

annotate gsm-fw/finlink/ld-script.src @ 632:02d14592bb73

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ramImage build change: load iram.text directly into IRAM w/o wasting XRAM
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Mon, 01 Sep 2014 18:02:06 +0000
parents aa93994e9f63
children da72b51c0572
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 dnl This ld script source is fed through m4 in order to fill in
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2 dnl those settings which depend on the configuration.
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3 dnl Memory region sizes are set in ../include/config.m4, generated
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4 dnl by the configuration mechanism based on the selected target,
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5 dnl and the Makefile prepends flash.m4 or xram.m4 to select the
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6 dnl type of image we are linking: either the regular flashable image,
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7 dnl or a RAM-only test image (to be loaded via fc-xram) that does not
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8 dnl touch the flash and pretends as if the flash doesn't even exist.
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9
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10 /*
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11 * FreeCalypso ld script for the Buildmem build
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12 */
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13
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14 ENTRY(ifelse(Buildmem,XRAM,_FlashorXram_entry,0))
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15
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16 include(`../include/config.m4')dnl
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17 MEMORY {
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18 ifelse(Buildmem-FLASH_BOOT_VIA_BOOTROM,FLASH-1,
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19 ` FLASH_OVERLAY : ORIGIN = 0, LENGTH = 0x2000')
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20 ifelse(Buildmem,FLASH,
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21 ` FLASH : ORIGIN = FLASHIMAGE_BASE_ADDR,
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22 LENGTH = CONFIG_FWFLASH_SIZE - FLASHIMAGE_BASE_ADDR')
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23 IRAM : ORIGIN = 0x00800000, LENGTH = CONFIG_IRAM_SIZE
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24 XRAM : ORIGIN = 0x01000000, LENGTH = CONFIG_XRAM_SIZE
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25 }
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26 ifelse(FFS_IN_RAM,1,`
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27 RAMFFS_BLKSIZE_BYTES = 1 << RAMFFS_BLKSIZE_LOG2;
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28 RAMFFS_TOTAL_SIZE = RAMFFS_BLKSIZE_BYTES * RAMFFS_NBLOCKS;
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29 ')dnl
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30
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31 SECTIONS {
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32 ifelse(Buildmem,FLASH,`
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33 /* Flash boot entry point */
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34 flashboot.text FLASHIMAGE_BASE_ADDR : {
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35 *(flashboot.text)
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36 } > FLASH
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37 ')dnl
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38
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39 /* XIP code, going into flash or XRAM emulating flash */
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40 xip.text : {
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41 *(xip.text*)
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42 xipcode.o(.text*)
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43 *libplus.xip.a:(.text*)
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44 *libgpf.xip.a:(.text*)
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45 *librv.a:(.text*)
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46 *libsprintf.a:(.text*)
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47 /* let's put the ARM->Thumb veneers in the XIP section */
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48 *(.glue_7)
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49 } > Buildmem
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50
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51 /* copy-to-IRAM code */
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52 iram.text 0x80001C : {
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53 /* the 7 exception and interrupt vectors @ 0x80001C */
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54 *(iram.vectors)
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55 *(iram.text*)
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56 iramcode.o(.text*)
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57 *libplus.iram.a:(.text*)
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58 *libgpf.iram.a:(.text*)
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59 *libc.a:(.text*)
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60 *libgcc.a:(.text*)
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61 } > IRAM Put_in_flash
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62 ifelse(Buildmem,FLASH,
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63 ` __iramtext_ram_addr = ADDR(iram.text);
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64 __iramtext_flash_addr = LOADADDR(iram.text);
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65 __iramtext_size = SIZEOF(iram.text);
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66 ')dnl
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67
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68 /* all .rodata will stay in flash */
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69 .rodata : {
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70 *(.rodata*)
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71 } > Buildmem
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72
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73 /*
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74 * All .data will go into XRAM.
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75 * For the flash build we'll have a step that copies
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76 * the .data section from flash to XRAM; for the RAM-only
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77 * build it goes directly into XRAM and stays there.
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78 */
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79 .data : {
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80 *(.data*)
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81 } > XRAM Put_in_flash
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82 ifelse(Buildmem,FLASH,
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83 ` __initdata_ram_addr = ADDR(.data);
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84 __initdata_flash_addr = LOADADDR(.data);
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85 __initdata_size = SIZEOF(.data);
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86 ')dnl
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87
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88 /* we have two kinds of BSS: internal and external */
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89 int.bss (NOLOAD) : {
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90 *(int.bss*)
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91 *(.l1s_global)
92
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92 iramcode.o(.bss* COMMON)
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93 *libplus.iram.a:(.bss* COMMON)
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94 *libgpf.iram.a:(.bss* COMMON)
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95 *libc.a:(.bss* COMMON)
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96 *libgcc.a:(.bss* COMMON)
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97 . = ALIGN(4);
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98 } > IRAM
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99 __intbss_start = ADDR(int.bss);
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100 __intbss_size = SIZEOF(int.bss);
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101
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102 ext.bss (NOLOAD) : {
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103 *(ext.bss*)
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104 xipcode.o(.bss* COMMON)
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105 *libplus.xip.a:(.bss* COMMON)
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106 *libgpf.xip.a:(.bss* COMMON)
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107 *librv.a:(.bss* COMMON)
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108 *libsprintf.a:(.bss* COMMON)
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109 . = ALIGN(4);
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110 } > XRAM
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111 __extbss_start = ADDR(ext.bss);
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112 __extbss_size = SIZEOF(ext.bss);
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113
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114 /* finally, we have "raw RAM": like BSS, but we don't zero it out */
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115 int.ram (NOLOAD) : {
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116 *(int.ram*)
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117 *(system_stack)
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118 *(irq_stack)
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119 *(fiq_stack)
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120 *(timer_hisr_stack)
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121 . = ALIGN(4);
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122 _iram_end = .;
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123 } > IRAM
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124
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125 ext.ram (NOLOAD) : {
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126 *(ext.ram*)
312
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127 *(except_stack)
92
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128 . = ALIGN(4);
208
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129 ifelse(FFS_IN_RAM,1,
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130 ` _RAMFFS_area = .;
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131 . += RAMFFS_TOTAL_SIZE;
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132 ')dnl
92
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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133 _xram_end = .;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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134 } > XRAM
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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135 }