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fix: 🐛 Update linker script w/ segment attributes. 

Double the size of the kernel (by including all
the necessary sections).
This commit is contained in:
Berkus Decker 2023-07-24 00:35:33 +03:00 committed by Berkus Decker
parent b8e9617b06
commit 994ea39760
1 changed files with 61 additions and 24 deletions
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85
linker/aarch64.ld
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@ -5,65 +5,102 @@
* Original code distributed under MIT, additional changes are under BlueOak-1.0.0
*/
ENTRY(_boot_cores);
__phys_load_addr = 0x80000;
ENTRY(__phys_load_addr);
PAGE_SIZE = 65536;
/* Flags:
* 4 == R
* 5 == RX
* 6 == RW
*
* Segments are marked PT_LOAD below so that the ELF file provides virtual and physical addresses.
* It doesn't mean all of them need actually be loaded.
*/
PHDRS
{
segment_boot_core_stack PT_LOAD FLAGS(6);
segment_code PT_LOAD FLAGS(5);
segment_data PT_LOAD FLAGS(6);
}
/* Symbols between __BOOT_START and __BOOT_END should be dropped after init is complete.
Symbols between __RO_START and __RO_END are the kernel code.
Symbols between __BSS_START and __BSS_END must be initialized to zero by startup code in the kernel.
*/
SECTIONS
{
. = 0x80000; /* AArch64 boot address is 0x80000, 4K-aligned */
__STACK_START = 0x80000; /* Stack grows from here towards 0x0. */
__BOOT_START = .;
__STACK_START = __phys_load_addr; /* Stack grows from here towards 0x0. */
. = __phys_load_addr; /* AArch64 boot address is 0x80000, 4K-aligned */
/***********************************************************************************************
* Code + RO Data
***********************************************************************************************/
.text :
{
KEEP(*(.text.main.entry)) // Entry point must go first
/*******************************************************************************************
* Boot Code + Boot Data
*******************************************************************************************/
__BOOT_START = .;
KEEP(*(.text.main.entry))
*(.text.boot)
//. = ALIGN(PAGE_SIZE);
*(.data.boot)
. = ALIGN(PAGE_SIZE); /* Here the boot code ends */
__BOOT_END = .; // __BOOT_END must be PAGE_SIZE aligned
/*******************************************************************************************
* Regular Kernel Code
*******************************************************************************************/
__RO_START = .;
*(.text .text.*)
}
*(.text*)
} :segment_code
.vectors ALIGN(2048):
{
__EXCEPTION_VECTORS_START = .;
KEEP(*(.vectors))
}
} :segment_code
.rodata ALIGN(4):
{
*(.rodata .rodata.*)
*(.rodata*)
FILL(0x00)
}
. = ALIGN(PAGE_SIZE); /* Fill up to page size */
__RO_END = .; /* __RO_END must be PAGE_SIZE aligned */
__DATA_START = .; /* __DATA_START must be PAGE_SIZE aligned */
. = ALIGN(PAGE_SIZE); /* Fill up to page size */
__RO_END = .; /* __RO_END must be PAGE_SIZE aligned */
} :segment_code
.data : /* @todo align data to 4K -- it's already aligned up to __RO_END marker now */
/***********************************************************************************************
* Data + BSS
***********************************************************************************************/
.data :
{
*(.data .data.*)
__DATA_START = .; /* __DATA_START must be PAGE_SIZE aligned */
*(.data*)
FILL(0x00)
}
} :segment_data
/* @todo could insert .data.boot here with proper alignment */
.bss ALIGN(8) (NOLOAD):
.bss ALIGN(PAGE_SIZE) (NOLOAD):
{
__BSS_START = .;
*(.bss .bss.*)
*(COMMON)
*(.bss*)
. = ALIGN(PAGE_SIZE); /* Align up to page size */
__BSS_END = .;
__BSS_SIZE_U64S = (__BSS_END - __BSS_START) / 8;
}
} :segment_data
/DISCARD/ : { *(.comment) *(.gnu*) *(.note*) *(.eh_frame*) *(.text.chainboot*) }
/***********************************************************************************************
* Misc
***********************************************************************************************/
.got : { *(.got*) }
ASSERT(SIZEOF(.got) == 0, "Relocation support not expected")
/DISCARD/ : { *(.comment*) *(.gnu*) *(.note*) *(.eh_frame*) *(.text.chainboot*) }
}
INCLUDE linker/aarch64-exceptions.ld