82d16b150c
This patch changes the memlayout macro infrastructure so that the size of a region "xxx" (i.e. the distance between the symbols _xxx and _exxx) is stored in a separate _xxx_size symbol. This has the advantage that region sizes can be used inside static initializers, and also saves an extra subtraction at runtime. Since linker symbols can only be treated as addresses (not as raw integers) by C, retain the REGION_SIZE() accessor macro to hide the necessary typecast. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: Ifd89708ca9bd3937d0db7308959231106a6aa373 Reviewed-on: https://review.coreboot.org/c/coreboot/+/49332 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
161 lines
3.4 KiB
Text
161 lines
3.4 KiB
Text
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
|
|
#include <memlayout.h>
|
|
|
|
/* This file is included inside a SECTIONS block */
|
|
|
|
/* First we place the code and read only data (typically const declared).
|
|
* This could theoretically be placed in rom.
|
|
* The '.' in '.text . : {' is actually significant to prevent missing some
|
|
* SoC's entry points due to artificial alignment restrictions, see
|
|
* https://sourceware.org/binutils/docs/ld/Output-Section-Address.html
|
|
*/
|
|
.text . : {
|
|
_program = .;
|
|
_text = .;
|
|
#if !(ENV_X86 && ENV_BOOTBLOCK)
|
|
*(.init._start);
|
|
*(.init);
|
|
*(.init.*);
|
|
#endif
|
|
*(.text._start);
|
|
*(.text.stage_entry);
|
|
KEEP(*(.metadata_hash_anchor));
|
|
*(.text);
|
|
*(.text.*);
|
|
|
|
#if ENV_RAMSTAGE || ENV_ROMSTAGE || ENV_POSTCAR
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_cbmem_init_hooks = .;
|
|
KEEP(*(.rodata.cbmem_init_hooks));
|
|
_ecbmem_init_hooks = .;
|
|
RECORD_SIZE(cbmem_init_hooks)
|
|
#endif
|
|
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_rsbe_init_begin = .;
|
|
KEEP(*(.rsbe_init));
|
|
_ersbe_init_begin = .;
|
|
RECORD_SIZE(rsbe_init_begin)
|
|
|
|
#if ENV_RAMSTAGE
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_pci_drivers = .;
|
|
KEEP(*(.rodata.pci_driver));
|
|
_epci_drivers = .;
|
|
RECORD_SIZE(pci_drivers)
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_cpu_drivers = .;
|
|
KEEP(*(.rodata.cpu_driver));
|
|
_ecpu_drivers = .;
|
|
RECORD_SIZE(cpu_drivers)
|
|
#endif
|
|
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
*(.rodata);
|
|
*(.rodata.*);
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_etext = .;
|
|
RECORD_SIZE(text)
|
|
} : to_load
|
|
|
|
#if ENV_RAMSTAGE && (CONFIG(COVERAGE) || CONFIG(ASAN_IN_RAMSTAGE))
|
|
.ctors . : {
|
|
. = ALIGN(0x100);
|
|
__CTOR_LIST__ = .;
|
|
KEEP(*(.ctors));
|
|
LONG(0);
|
|
LONG(0);
|
|
__CTOR_END__ = .;
|
|
}
|
|
#endif
|
|
|
|
/* Include data, bss, and heap in that order. Not defined for all stages. */
|
|
#if ENV_STAGE_HAS_DATA_SECTION
|
|
.data . : {
|
|
. = ALIGN(ARCH_CACHELINE_ALIGN_SIZE);
|
|
_data = .;
|
|
|
|
/*
|
|
* The postcar phase uses a stack value that is located in the relocatable
|
|
* module section. While the postcar stage could be linked like smm and
|
|
* other rmodules the postcar stage needs similar semantics of the more
|
|
* traditional stages in the coreboot infrastructure. Therefore it's easier
|
|
* to specialize this case.
|
|
*/
|
|
#if ENV_RMODULE || ENV_POSTCAR
|
|
_rmodule_params = .;
|
|
KEEP(*(.module_parameters));
|
|
_ermodule_params = .;
|
|
RECORD_SIZE(rmodule_params)
|
|
#endif
|
|
|
|
*(.data);
|
|
*(.data.*);
|
|
*(.sdata);
|
|
*(.sdata.*);
|
|
|
|
#if ENV_ROMSTAGE_OR_BEFORE
|
|
PROVIDE(_preram_cbmem_console = .);
|
|
PROVIDE(_epreram_cbmem_console = _preram_cbmem_console);
|
|
PROVIDE(_preram_cbmem_console_size = ABSOLUTE(0));
|
|
#elif ENV_RAMSTAGE
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_bs_init_begin = .;
|
|
KEEP(*(.bs_init));
|
|
LONG(0);
|
|
LONG(0);
|
|
_ebs_init_begin = .;
|
|
RECORD_SIZE(bs_init_begin)
|
|
#endif
|
|
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_edata = .;
|
|
RECORD_SIZE(data)
|
|
}
|
|
#endif
|
|
|
|
#if !ENV_CACHE_AS_RAM
|
|
.bss . : {
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_bss = .;
|
|
*(.bss)
|
|
*(.bss.*)
|
|
*(.sbss)
|
|
*(.sbss.*)
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_ebss = .;
|
|
RECORD_SIZE(bss)
|
|
}
|
|
#endif
|
|
|
|
#if ENV_STAGE_HAS_HEAP_SECTION
|
|
.heap . : {
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_heap = .;
|
|
. += (ENV_RMODULE ? __heap_size : CONFIG_HEAP_SIZE);
|
|
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
|
|
_eheap = .;
|
|
RECORD_SIZE(heap)
|
|
}
|
|
#endif
|
|
|
|
#if ENV_RAMSTAGE && CONFIG(ASAN_IN_RAMSTAGE)
|
|
_shadow_size = (_eheap - _data) >> 3;
|
|
REGION(asan_shadow, ., _shadow_size, ARCH_POINTER_ALIGN_SIZE)
|
|
#endif
|
|
|
|
_eprogram = .;
|
|
RECORD_SIZE(program)
|
|
|
|
/* Discard the sections we don't need/want */
|
|
|
|
zeroptr = 0;
|
|
|
|
/DISCARD/ : {
|
|
*(.comment)
|
|
*(.comment.*)
|
|
*(.note)
|
|
*(.note.*)
|
|
*(.eh_frame);
|
|
}
|