FreeCalypso > hg > fc-selenite
view gcc/ld-script.src @ 167:5b0e7f9b3d05
components: new -D additions from Magnetite
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 19 Jun 2019 03:57:35 +0000 |
parents | 16703b3fb211 |
children |
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dnl This ld script source is fed through m4 in order to fill in dnl those settings which depend on the configuration. dnl Two include files are fed to m4 before this main body: dnl the appropriate targets/*.m4 file defining the memory config dnl of the hardware, and one of flash.m4 or xram.m4 to select dnl the build type. /* * FreeCalypso Selenite ld script for the Buildmem build */ ENTRY(_Firmware_boot_entry) MEMORY { ifelse(Buildmem-FLASH_BOOT_VIA_BOOTROM,FLASH-1, ` FLASH_OVERLAY : ORIGIN = 0, LENGTH = 0x2000') ifelse(Buildmem,FLASH, ` FLASH : ORIGIN = FLASHIMAGE_BASE_ADDR, LENGTH = CONFIG_FWFLASH_SIZE - FLASHIMAGE_BASE_ADDR') IRAM : ORIGIN = 0x00800000, LENGTH = CONFIG_IRAM_SIZE XRAM : ORIGIN = 0x01000000, LENGTH = CONFIG_XRAM_SIZE } SECTIONS { dnl The following sections exist only in the flashImage build, dnl and only on targets that use the Calypso boot ROM. ifelse(Buildmem-FLASH_BOOT_VIA_BOOTROM,FLASH-1, ` /* Part of flash overlaid by the boot ROM */ bootrom.overlay 0 : { *(bootrom.overlay) } > FLASH_OVERLAY /* code that enables the boot ROM and jumps to it */ bootrom.switch : { *(bootrom.switch) } > IRAM AT> FLASH_OVERLAY __romswitch_ram_addr = ADDR(bootrom.switch); __romswitch_flash_addr = LOADADDR(bootrom.switch); __romswitch_size = SIZEOF(bootrom.switch); ')dnl /* boot entry code, going into flash or XRAM emulating flash */ .inttext INTTEXT_BASE_ADDR : { *(.inttext) } > Buildmem /* copy-to-IRAM code */ iram.text 0x80001C : { /* the 7 exception and interrupt vectors @ 0x80001C */ *(.ramvecs) *_ir.a:(.text*) *_int.a:(.text*) *_intram.a:(.text*) *osx_na7_db.a:(.text*) *tpudrv.a:(.text*) *drivers_flash.a:niq32.o(.text*) *sim_drv.a:sim32.o(.text*) *libc.a:(.text*) *libgcc.a:(.text*) } > IRAM Put_in_flash ifelse(Buildmem,FLASH, ` __iramtext_ram_addr = ADDR(iram.text); __iramtext_flash_addr = LOADADDR(iram.text); __iramtext_size = SIZEOF(iram.text); ')dnl /* XIP code, going into flash or XRAM emulating flash */ xip.text : { *(.text*) /* let's put the ARM->Thumb veneers in the XIP section */ *(.glue_7) } > Buildmem /* all .rodata will stay in flash */ .rodata : { *(.rodata*) } > Buildmem .bss_dar (NOLOAD) : { *dar_gbl_var.a:(.bss* COMMON) } > XRAM /* * All .data will go into XRAM. * For the flash build we'll have a step that copies * the .data section from flash to XRAM; for the RAM-only * build it goes directly into XRAM and stays there. */ .data : { *(.data*) } > XRAM Put_in_flash ifelse(Buildmem,FLASH, ` __initdata_ram_addr = ADDR(.data); __initdata_flash_addr = LOADADDR(.data); __initdata_size = SIZEOF(.data); ')dnl /* we have two kinds of BSS: internal and external */ int.bss (NOLOAD) : { *(.l1s_global) *_ir.a:(.bss* COMMON) *_int.a:(.bss* COMMON) *_intram.a:(.bss* COMMON) *osx_na7_db.a:(.bss* COMMON) *tpudrv.a:(.bss* COMMON) *libc.a:(.bss* COMMON) *libgcc.a:(.bss* COMMON) *(.API_HISR_stack) . = ALIGN(4); } > IRAM __intbss_start = ADDR(int.bss); __intbss_size = SIZEOF(int.bss); ext.bss (NOLOAD) : { *(.bss* COMMON) . = ALIGN(4); } > XRAM __extbss_start = ADDR(ext.bss); __extbss_size = SIZEOF(ext.bss); int.stack (NOLOAD) : ALIGN(8) { /* Beginning of stacks and heap area - 2.75 kbytes (int.s) */ _Stack_segment_start = .; . += 0xB00; _Stack_segment_end = .; _iram_end = .; } > IRAM ext.stack (NOLOAD) : ALIGN(8) { /* Stack for abort and/or undefined modes. */ . += 512; _Except_Stack_SP = .; /* Leave 38 32bit words for state saving on exceptions. */ xdump_buffer = .; . += 38 * 4; _xram_end = .; } > XRAM }