diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/helas403/startup/linkcmds')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/helas403/startup/linkcmds | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/helas403/startup/linkcmds b/c/src/lib/libbsp/powerpc/helas403/startup/linkcmds new file mode 100644 index 0000000000..b2feeaacb0 --- /dev/null +++ b/c/src/lib/libbsp/powerpc/helas403/startup/linkcmds @@ -0,0 +1,200 @@ +/* + * This file contains directives for the GNU linker which are specific + * to the helas-403 + * This file is intended to be used together with flashentry.s + * it will generate a ROM that can be started directly after powerup reset + * $Id$ + */ + +OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", + "elf32-powerpc") +OUTPUT_ARCH(powerpc) + SEARCH_DIR(/usr/local/powerpc-rtems/lib); + +ENTRY(flash_entry) + +MEMORY + { + RAM : ORIGIN = 0, LENGTH = 8M + FLASH : ORIGIN = 0xFFF00000, LENGTH = 512K + } + + /* DIRTY TRICK: repeat addresses here, so we can work with them... */ + flash.start = 0xFFF00000; + flash.size = 512K; + +SECTIONS +{ + .entry : + { + *(.entry) + } > FLASH /* this is ROM for flash_entry */ + .text : + { + text.start = . ; + *(.entry2) + *(.text) + *(.rodata) + *(.rodata1) + *(.descriptors) + *(rom_ver) + etext = ALIGN(0x10); + _etext = .; + + + __CTOR_LIST__ = .; + LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2) + *(.ctors) + LONG(0) + __CTOR_END__ = .; + + __DTOR_LIST__ = .; + LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2) + *(.dtors) + LONG(0) + __DTOR_END__ = .; + + *(.lit) + *(.shdata) + *(.init) + *(.fini) + . = ALIGN(0x10); + _endtext = .; + text.end = .; + copy.src = .; + copy.tmptop.txt = .; + } > FLASH /* this is ROM for flash_entry */ + + text.size = text.end - text.start; + + /* R/W Data */ + /* place vectors to start at offset 0x100... */ + /* IMPORTANT: sections ".fill" and ".vectors" must be the first in RAM!!*/ + .fill 0x00010000 : + { + . = . + 0x0100; + } > RAM + + .vectors : AT (copy.src) + { + copy.dest = .; + *(.vectors) + . = ALIGN(0x10); + copy.tmptop.vec = .; + } > RAM + + .data : AT (copy.tmptop.vec - copy.dest + copy.src) + { + *(.data) + *(.data1) + PROVIDE (__SDATA_START__ = .); + *(.sdata) + . = ALIGN(0x10); + copy.tmptop.dat = .; + } > RAM + + PROVIDE (__EXCEPT_START__ = .); + .gcc_except_table : AT (copy.tmptop.dat - copy.dest + copy.src) + { + *(.gcc_except_table) + . = ALIGN(0x10); + copy.tmptop.exc = .; + } >RAM + PROVIDE (__EXCEPT_END__ = .); + + __GOT_START__ = .; + .got : AT (copy.tmptop.exc - copy.dest + copy.src) + { + s.got = .; + *(.got.plt) *(.got) + . = ALIGN(0x10); + copy.tmptop.got = .; + } > RAM + __GOT_END__ = .; + + .got1 : AT (copy.tmptop.got - copy.dest + copy.src) + { + *(.got1) + . = ALIGN(0x10); + copy.tmptop.gt1 = .; + } >RAM + + PROVIDE (__GOT2_START__ = .); + PROVIDE (_GOT2_START_ = .); + .got2 : AT (copy.tmptop.gt1 - copy.dest + copy.src) + { + *(.got2) + . = ALIGN(0x10); + copy.tmptop.gt2 = .; + } >RAM + PROVIDE (__GOT2_END__ = .); + PROVIDE (_GOT2_END_ = .); + + PROVIDE (__FIXUP_START__ = .); + PROVIDE (_FIXUP_START_ = .); + .fixup : AT (copy.tmptop.gt2 - copy.dest + copy.src) + { + *(.fixup) + . = ALIGN(0x10); + copy.tmptop.fix = .; + } >RAM + PROVIDE (_FIXUP_END_ = .); + PROVIDE (__FIXUP_END__ = .); + + PROVIDE (__SDATA2_START__ = .); + .sdata2 : AT (copy.tmptop.fix - copy.dest + copy.src) + { + *(.sdata2) + . = ALIGN(0x10); + copy.tmptop.sda = .; + } >RAM + + copy.size = copy.tmptop.sda - copy.dest; + + .sbss2 : + { + *(.sbss2) + } >RAM + PROVIDE (__SBSS2_END__ = .); + + __SBSS_START__ = .; + .bss : + { + bss.start = .; + *(.bss) *(.sbss) *(COMMON) + bss.end = ALIGN(4); + } > RAM + __SBSS_END__ = .; + + bss.size = bss.end - bss.start; + + /* reserve 16KByte for stack... */ + stack.end = bss.end + 16K; + PROVIDE(_end = stack.end); + + .line 0 : { *(.line) } + .debug 0 : { *(.debug) } + .debug_sfnames 0 : { *(.debug_sfnames) } + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_pubnames 0 : { *(.debug_pubnames) } + .debug_aranges 0 : { *(.debug_aranges) } + .debug_aregion 0 : { *(.debug_aregion) } + .debug_macinfo 0 : { *(.debug_macinfo) } + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + + /* + * place reset instruction into last word of FLASH + * NOTE: after reset, PPC403 starts executing from address + * 0xFFFFFFFC + * The reset section is placed in ROM at 0xF7FFFFFC instead, + * but a mirror of this address exists at 0xFFFFFFFC due to + * the initial memory controller setup + */ + .reset flash.start - 4 + flash.size : + { + *(.reset) + } > FLASH +} + + |