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Rev | Author | Line No. | Line |
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178 | palkovsky | 1 | /** AMD64 linker script |
164 | palkovsky | 2 | * |
3 | * umapped section: |
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4 | * kernel text |
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5 | * kernel data |
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6 | * mapped section: |
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7 | * kernel text |
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8 | * kernel data |
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9 | */ |
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10 | |||
289 | palkovsky | 11 | #define __ASM__ |
12 | #include <arch/boot/boot.h> |
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13 | #include <arch/mm/page.h> |
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14 | |||
164 | palkovsky | 15 | ENTRY(kernel_image_start) |
16 | |||
17 | SECTIONS { |
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289 | palkovsky | 18 | .unmapped BOOTSTRAP_OFFSET: AT (BOOTSTRAP_OFFSET) { |
164 | palkovsky | 19 | unmapped_ktext_start = .; |
20 | *(K_TEXT_START); |
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21 | *(K_TEXT_START_2); |
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22 | unmapped_ktext_end = .; |
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275 | palkovsky | 23 | |
164 | palkovsky | 24 | unmapped_kdata_start = .; |
25 | *(K_DATA_START); |
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26 | unmapped_kdata_end = .; |
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27 | } |
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28 | |||
289 | palkovsky | 29 | .mapped (PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)+SIZEOF(.unmapped)) : AT (BOOTSTRAP_OFFSET+SIZEOF(.unmapped)) { |
164 | palkovsky | 30 | ktext_start = .; |
243 | palkovsky | 31 | *(BOOT_DATA); |
164 | palkovsky | 32 | *(.text); |
33 | ktext_end = .; |
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34 | |||
35 | kdata_start = .; |
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36 | *(.data); /* initialized data */ |
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37 | *(.rodata*); /* string literals */ |
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216 | palkovsky | 38 | hardcoded_load_address = .; |
301 | palkovsky | 39 | QUAD(PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)); |
216 | palkovsky | 40 | hardcoded_ktext_size = .; |
41 | QUAD(ktext_end - ktext_start + (unmapped_ktext_end - unmapped_ktext_start)); |
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42 | hardcoded_kdata_size = .; |
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43 | QUAD(kdata_end - kdata_start + (unmapped_kdata_end - unmapped_kdata_start)); |
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275 | palkovsky | 44 | hardcoded_unmapped_ktext_size = .; |
45 | LONG(unmapped_ktext_end - unmapped_ktext_start); |
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46 | hardcoded_unmapped_kdata_size = .; |
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47 | LONG(unmapped_kdata_end - unmapped_kdata_start); |
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268 | palkovsky | 48 | *(COMMON); /* global variables */ |
49 | |||
216 | palkovsky | 50 | *(.eh_frame); |
164 | palkovsky | 51 | *(.bss); /* uninitialized static variables */ |
268 | palkovsky | 52 | |
53 | symbol_table = .; |
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54 | *(symtab.*); /* Symbol table, must be LAST symbol!*/ |
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55 | |||
164 | palkovsky | 56 | kdata_end = .; |
57 | } |
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282 | palkovsky | 58 | |
59 | _hardcoded_kernel_size = (ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start) + (kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start); |
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277 | palkovsky | 60 | |
332 | palkovsky | 61 | /* Symbols that need to be accessed both from real mode & long mode */ |
62 | /* e820*_boot is real mode (pre-above-1MB-move), e820* is */ |
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63 | /* kernel mapped above-1MB-physical copied symbol */ |
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289 | palkovsky | 64 | e820table_boot = KA2PA(e820table) - BOOT_OFFSET; |
65 | e820counter_boot = KA2PA(e820counter) - BOOT_OFFSET; |
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332 | palkovsky | 66 | |
67 | /* real_bootstrap_gdtr is mapped real_bootstrap_gdtr_boot */ |
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68 | /* It is physically outside of kernel area, we have to access */ |
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69 | /* it after modification from long mode for booting */ |
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70 | /* SMP slave processors */ |
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289 | palkovsky | 71 | real_bootstrap_gdtr = PA2KA(real_bootstrap_gdtr_boot); |
164 | palkovsky | 72 | } |