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Diffstat (limited to 'bl2/bl2_el3.ld.S')
| -rw-r--r-- | bl2/bl2_el3.ld.S | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/bl2/bl2_el3.ld.S b/bl2/bl2_el3.ld.S new file mode 100644 index 0000000..c95706c --- /dev/null +++ b/bl2/bl2_el3.ld.S @@ -0,0 +1,187 @@ +/* + * Copyright (c) 2017-2022, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <common/bl_common.ld.h> +#include <lib/xlat_tables/xlat_tables_defs.h> + +OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT) +OUTPUT_ARCH(PLATFORM_LINKER_ARCH) +ENTRY(bl2_entrypoint) + +MEMORY { +#if BL2_IN_XIP_MEM + ROM (rx): ORIGIN = BL2_RO_BASE, LENGTH = BL2_RO_LIMIT - BL2_RO_BASE + RAM (rwx): ORIGIN = BL2_RW_BASE, LENGTH = BL2_RW_LIMIT - BL2_RW_BASE +#else + RAM (rwx): ORIGIN = BL2_BASE, LENGTH = BL2_LIMIT - BL2_BASE +#endif +#if SEPARATE_BL2_NOLOAD_REGION + RAM_NOLOAD (rw!a): ORIGIN = BL2_NOLOAD_START, LENGTH = BL2_NOLOAD_LIMIT - BL2_NOLOAD_START +#else +#define RAM_NOLOAD RAM +#endif +} + +#if !BL2_IN_XIP_MEM +#define ROM RAM +#endif + +SECTIONS +{ +#if BL2_IN_XIP_MEM + . = BL2_RO_BASE; + ASSERT(. == ALIGN(PAGE_SIZE), + "BL2_RO_BASE address is not aligned on a page boundary.") +#else + . = BL2_BASE; + ASSERT(. == ALIGN(PAGE_SIZE), + "BL2_BASE address is not aligned on a page boundary.") +#endif + +#if SEPARATE_CODE_AND_RODATA + .text . : { + __TEXT_START__ = .; + __TEXT_RESIDENT_START__ = .; + *bl2_el3_entrypoint.o(.text*) + *(.text.asm.*) + __TEXT_RESIDENT_END__ = .; + *(SORT_BY_ALIGNMENT(.text*)) + *(.vectors) + . = ALIGN(PAGE_SIZE); + __TEXT_END__ = .; + } >ROM + + .rodata . : { + __RODATA_START__ = .; + *(SORT_BY_ALIGNMENT(.rodata*)) + + RODATA_COMMON + + . = ALIGN(PAGE_SIZE); + __RODATA_END__ = .; + } >ROM + + ASSERT(__TEXT_RESIDENT_END__ - __TEXT_RESIDENT_START__ <= PAGE_SIZE, + "Resident part of BL2 has exceeded its limit.") +#else + ro . : { + __RO_START__ = .; + __TEXT_RESIDENT_START__ = .; + *bl2_el3_entrypoint.o(.text*) + *(.text.asm.*) + __TEXT_RESIDENT_END__ = .; + *(SORT_BY_ALIGNMENT(.text*)) + *(SORT_BY_ALIGNMENT(.rodata*)) + + RODATA_COMMON + + *(.vectors) + __RO_END_UNALIGNED__ = .; + /* + * Memory page(s) mapped to this section will be marked as + * read-only, executable. No RW data from the next section must + * creep in. Ensure the rest of the current memory page is unused. + */ + . = ALIGN(PAGE_SIZE); + + __RO_END__ = .; + } >ROM +#endif + + ASSERT(__CPU_OPS_END__ > __CPU_OPS_START__, + "cpu_ops not defined for this platform.") + +#if BL2_IN_XIP_MEM + . = BL2_RW_BASE; + ASSERT(BL2_RW_BASE == ALIGN(PAGE_SIZE), + "BL2_RW_BASE address is not aligned on a page boundary.") +#endif + + /* + * Define a linker symbol to mark start of the RW memory area for this + * image. + */ + __RW_START__ = . ; + + DATA_SECTION >RAM AT>ROM + __DATA_RAM_START__ = __DATA_START__; + __DATA_RAM_END__ = __DATA_END__; + + RELA_SECTION >RAM +#if SEPARATE_BL2_NOLOAD_REGION + SAVED_ADDR = .; + . = BL2_NOLOAD_START; + __BL2_NOLOAD_START__ = .; +#endif + STACK_SECTION >RAM_NOLOAD + BSS_SECTION >RAM_NOLOAD + XLAT_TABLE_SECTION >RAM_NOLOAD +#if SEPARATE_BL2_NOLOAD_REGION + __BL2_NOLOAD_END__ = .; + . = SAVED_ADDR; +#endif + +#if USE_COHERENT_MEM + /* + * The base address of the coherent memory section must be page-aligned (4K) + * to guarantee that the coherent data are stored on their own pages and + * are not mixed with normal data. This is required to set up the correct + * memory attributes for the coherent data page tables. + */ + coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) { + __COHERENT_RAM_START__ = .; + *(tzfw_coherent_mem) + __COHERENT_RAM_END_UNALIGNED__ = .; + /* + * Memory page(s) mapped to this section will be marked + * as device memory. No other unexpected data must creep in. + * Ensure the rest of the current memory page is unused. + */ + . = ALIGN(PAGE_SIZE); + __COHERENT_RAM_END__ = .; + } >RAM +#endif + + /* + * Define a linker symbol to mark end of the RW memory area for this + * image. + */ + __RW_END__ = .; + __BL2_END__ = .; + + /DISCARD/ : { + *(.dynsym .dynstr .hash .gnu.hash) + } + +#if BL2_IN_XIP_MEM + __BL2_RAM_START__ = ADDR(.data); + __BL2_RAM_END__ = .; + + __DATA_ROM_START__ = LOADADDR(.data); + __DATA_SIZE__ = SIZEOF(.data); + + /* + * The .data section is the last PROGBITS section so its end marks the end + * of BL2's RO content in XIP memory.. + */ + __BL2_ROM_END__ = __DATA_ROM_START__ + __DATA_SIZE__; + ASSERT(__BL2_ROM_END__ <= BL2_RO_LIMIT, + "BL2's RO content has exceeded its limit.") +#endif + __BSS_SIZE__ = SIZEOF(.bss); + + +#if USE_COHERENT_MEM + __COHERENT_RAM_UNALIGNED_SIZE__ = + __COHERENT_RAM_END_UNALIGNED__ - __COHERENT_RAM_START__; +#endif + +#if BL2_IN_XIP_MEM + ASSERT(. <= BL2_RW_LIMIT, "BL2's RW content has exceeded its limit.") +#else + ASSERT(. <= BL2_LIMIT, "BL2 image has exceeded its limit.") +#endif +} |