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Last change
on this file since 276 was 276, checked in by bouyer, 14 years ago |
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A boot loader to be stored in ROM of a TSAR platform.
Based on Cesar FUGUET's work.
Platform-specific files are in a subdirectory, e.g. platform_fpga_de2-115,
so the same code can be targetted to different platforms.
The platform is selected with the PLATFORM_DIR environnement variable.
The supported variant are soclib and fpga, the later being the default
and the former selected by defining the SOCLIB environnement variable.
The boot loader embeds a binary device tree describing the platform,
to be used by the loaded software.
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File size:
781 bytes
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| 1 | /**********************************************************
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| 2 | File : ldscript
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| 3 | Author : Cesar Fuguet
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| 4 | Date : June 2011
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| 5 | **********************************************************/
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| 6 |
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| 7 | /* definition of the base address for all segments
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| 8 | The peripherals base addresses are referenced by the
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| 9 | software drivers and must be defined, even if the
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| 10 | peripherals are not present in the architecture */
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| 11 |
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| 12 | seg_stack_base = 0x04000000;
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| 13 | seg_reset_heap_base = 0x04400000;
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| 14 |
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| 15 | seg_reset_code_base = 0xBFC00000; /* le code de boot */
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| 16 |
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| 17 | /* Grouping sections into segments */
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| 18 |
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| 19 | ENTRY(boot)
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| 20 | SECTIONS
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| 21 | {
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| 22 | . = seg_reset_code_base;
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| 23 | .text : {
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| 24 | *(.boot)
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| 25 | *(.reset)
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| 26 | }
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| 27 |
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| 28 | .data ALIGN(0x4) : {
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| 29 | *(.reset_data)
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| 30 | . = ALIGN(0x4);
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| 31 | dtb_addr = .;
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| 32 | INCLUDE "objs/platform.ld";
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| 33 | }
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| 34 | }
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