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AArch64: support public linker scripts (#7831) 

Signed-off-by: GuEe-GUI <GuEe-GUI@github.com>
This commit is contained in:
GUI 2023-07-25 21:31:44 +08:00 committed by GitHub
parent ef91876ee7
commit 6f119d4ce9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 302 additions and 230 deletions
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8
bsp/qemu-virt64-aarch64/.config
View File

@ -94,6 +94,10 @@ CONFIG_RT_CONSOLEBUF_SIZE=256
CONFIG_RT_CONSOLE_DEVICE_NAME="uart0"
CONFIG_RT_VER_NUM=0x50001
CONFIG_RT_USING_STDC_ATOMIC=y
#
# RT-Thread Architecture
#
CONFIG_ARCH_CPU_64BIT=y
CONFIG_RT_USING_CACHE=y
# CONFIG_RT_USING_HW_ATOMIC is not set
@ -104,6 +108,10 @@ CONFIG_ARCH_MM_MMU=y
CONFIG_ARCH_ARM=y
CONFIG_ARCH_ARM_MMU=y
CONFIG_ARCH_ARMV8=y
CONFIG_ARCH_TEXT_OFFSET=0x80000
CONFIG_ARCH_RAM_OFFSET=0x40000000
CONFIG_ARCH_SECONDARY_CPU_STACK_SIZE=4096
CONFIG_ARCH_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
#
# RT-Thread Components

4
bsp/qemu-virt64-aarch64/SConstruct
View File

@ -40,9 +40,5 @@ Export('rtconfig')
# prepare building environment
objs = PrepareBuilding(env, RTT_ROOT)
if GetDepend('RT_USING_SMART'):
# use smart link.lds
env['LINKFLAGS'] = env['LINKFLAGS'].replace('link.lds', 'link_smart.lds')
# make a building
DoBuilding(TARGET, objs)

109
bsp/qemu-virt64-aarch64/link.lds
View File

@ -1,109 +0,0 @@
OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
OUTPUT_ARCH(aarch64)
SECTIONS
{
. = 0x40080000;
/* . = 0xffff000000080000; */
__text_start = .;
.text :
{
KEEP(*(.text.entrypoint))
KEEP(*(.vectors))
*(.text)
*(.text.*)
/* section information for utest */
. = ALIGN(8);
__rt_utest_tc_tab_start = .;
KEEP(*(UtestTcTab))
__rt_utest_tc_tab_end = .;
/* section information for finsh shell */
. = ALIGN(8);
__fsymtab_start = .;
KEEP(*(FSymTab))
__fsymtab_end = .;
. = ALIGN(8);
__vsymtab_start = .;
KEEP(*(VSymTab))
__vsymtab_end = .;
. = ALIGN(8);
/* section information for modules */
. = ALIGN(8);
__rtmsymtab_start = .;
KEEP(*(RTMSymTab))
__rtmsymtab_end = .;
/* section information for initialization */
. = ALIGN(8);
__rt_init_start = .;
KEEP(*(SORT(.rti_fn*)))
__rt_init_end = .;
} =0
__text_end = .;
.ARM.exidx :
{
__exidx_start = .;
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
__exidx_end = .;
}
__rodata_start = .;
.rodata : { *(.rodata) *(.rodata.*) }
__rodata_end = .;
. = ALIGN(8);
.ctors :
{
PROVIDE(__ctors_start__ = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE(__ctors_end__ = .);
}
.dtors :
{
PROVIDE(__dtors_start__ = .);
KEEP(*(SORT(.fini_array.*)))
KEEP(*(.fini_array))
PROVIDE(__dtors_end__ = .);
}
. = ALIGN(8);
__data_start = .;
.data :
{
*(.data)
*(.data.*)
}
__data_end = .;
. = ALIGN(8);
__bss_start = .;
.bss :
{
*(.bss)
*(.bss.*)
*(COMMON)
. = ALIGN(8);
}
. = ALIGN(8);
__bss_end = .;
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
__data_size = SIZEOF(.data);
__bss_size = SIZEOF(.bss);
_end = .;
}

109
bsp/qemu-virt64-aarch64/link_smart.lds
View File

@ -1,109 +0,0 @@
OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
OUTPUT_ARCH(aarch64)
SECTIONS
{
/* . = 0x40080000; */
. = 0xffff000000080000;
__text_start = .;
.text :
{
KEEP(*(.text.entrypoint))
KEEP(*(.vectors))
*(.text)
*(.text.*)
/* section information for utest */
. = ALIGN(8);
__rt_utest_tc_tab_start = .;
KEEP(*(UtestTcTab))
__rt_utest_tc_tab_end = .;
/* section information for finsh shell */
. = ALIGN(8);
__fsymtab_start = .;
KEEP(*(FSymTab))
__fsymtab_end = .;
. = ALIGN(8);
__vsymtab_start = .;
KEEP(*(VSymTab))
__vsymtab_end = .;
. = ALIGN(8);
/* section information for modules */
. = ALIGN(8);
__rtmsymtab_start = .;
KEEP(*(RTMSymTab))
__rtmsymtab_end = .;
/* section information for initialization */
. = ALIGN(8);
__rt_init_start = .;
KEEP(*(SORT(.rti_fn*)))
__rt_init_end = .;
} =0
__text_end = .;
.ARM.exidx :
{
__exidx_start = .;
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
__exidx_end = .;
}
__rodata_start = .;
.rodata : { *(.rodata) *(.rodata.*) }
__rodata_end = .;
. = ALIGN(8);
.ctors :
{
PROVIDE(__ctors_start__ = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE(__ctors_end__ = .);
}
.dtors :
{
PROVIDE(__dtors_start__ = .);
KEEP(*(SORT(.fini_array.*)))
KEEP(*(.fini_array))
PROVIDE(__dtors_end__ = .);
}
. = ALIGN(8);
__data_start = .;
.data :
{
*(.data)
*(.data.*)
}
__data_end = .;
. = ALIGN(8);
__bss_start = .;
.bss :
{
*(.bss)
*(.bss.*)
*(COMMON)
. = ALIGN(8);
}
. = ALIGN(8);
__bss_end = .;
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
__data_size = SIZEOF(.data);
__bss_size = SIZEOF(.bss);
_end = .;
}

7
bsp/qemu-virt64-aarch64/rtconfig.h
View File

@ -61,12 +61,19 @@
#define RT_CONSOLE_DEVICE_NAME "uart0"
#define RT_VER_NUM 0x50001
#define RT_USING_STDC_ATOMIC
/* RT-Thread Architecture */
#define ARCH_CPU_64BIT
#define RT_USING_CACHE
#define ARCH_MM_MMU
#define ARCH_ARM
#define ARCH_ARM_MMU
#define ARCH_ARMV8
#define ARCH_TEXT_OFFSET 0x80000
#define ARCH_RAM_OFFSET 0x40000000
#define ARCH_SECONDARY_CPU_STACK_SIZE 4096
#define ARCH_HAVE_EFFICIENT_UNALIGNED_ACCESS
/* RT-Thread Components */

4
bsp/qemu-virt64-aarch64/rtconfig.py
View File

@ -13,6 +13,7 @@ if PLATFORM == 'gcc':
PREFIX = os.getenv('RTT_CC_PREFIX') or 'aarch64-none-elf-'
CC = PREFIX + 'gcc'
CXX = PREFIX + 'g++'
CPP = PREFIX + 'cpp'
AS = PREFIX + 'gcc'
AR = PREFIX + 'ar'
LINK = PREFIX + 'gcc'
@ -25,10 +26,11 @@ if PLATFORM == 'gcc':
AFPFLAGS = ' '
DEVICE = ' -march=armv8-a -mtune=cortex-a53 -ftree-vectorize -ffast-math -funwind-tables -fno-strict-aliasing'
CPPFLAGS= ' -E -P -x assembler-with-cpp'
CXXFLAGS= DEVICE + CFPFLAGS + ' -Wall -fdiagnostics-color=always'
CFLAGS = DEVICE + CFPFLAGS + ' -Wall -Wno-cpp -std=gnu99 -fdiagnostics-color=always'
AFLAGS = ' -c' + AFPFLAGS + ' -x assembler-with-cpp'
LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors -T link.lds' + ' -lsupc++ -lgcc -static'
LFLAGS = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors -T link.lds' + ' -lsupc++ -lgcc -static'
CPATH = ''
LPATH = ''

6
libcpu/Kconfig
View File

@ -1,3 +1,5 @@
menu "RT-Thread Architecture"
config ARCH_CPU_64BIT
bool
@ -231,3 +233,7 @@ config ARCH_HOST_SIMULATOR
config ARCH_CPU_STACK_GROWS_UPWARD
bool
default n
source "$RTT_DIR/libcpu/aarch64/Kconfig"
endmenu

1
libcpu/aarch64/.gitignore vendored Executable file
View File

@ -0,0 +1 @@
link.lds

19
libcpu/aarch64/Kconfig Normal file
View File

@ -0,0 +1,19 @@
if ARCH_ARMV8 && ARCH_CPU_64BIT
config ARCH_TEXT_OFFSET
hex "Text offset"
default 0x200000
config ARCH_RAM_OFFSET
hex "RAM offset"
default 0
config ARCH_SECONDARY_CPU_STACK_SIZE
int "Secondary CPU stack size"
default 4096
config ARCH_HAVE_EFFICIENT_UNALIGNED_ACCESS
bool
default y
endif

5
libcpu/aarch64/SConscript
View File

@ -8,6 +8,11 @@ Import('rtconfig')
cwd = GetCurrentDir()
group = []
list = os.listdir(cwd)
bsp_path = Dir('#').abspath
if not os.path.exists(bsp_path + "/link.lds"):
Env['LINKFLAGS'] = Env['LINKFLAGS'].replace('link.lds', cwd + "/link.lds")
Preprocessing("link.lds.S", ".lds", CPPPATH=[bsp_path])
# add common code files
group = group + SConscript(os.path.join('common', 'SConscript'))

4
libcpu/aarch64/common/mmu.c
View File

@ -777,8 +777,8 @@ void rt_hw_mem_setup_early(unsigned long *tbl0, unsigned long *tbl1,
#ifdef RT_USING_SMART
unsigned long va = KERNEL_VADDR_START;
#else
extern unsigned char __start;
unsigned long va = (unsigned long) &__start;
extern unsigned char _start;
unsigned long va = (unsigned long) &_start;
va = RT_ALIGN_DOWN(va, 0x200000);
#endif

48
libcpu/aarch64/cortex-a/entry_point.S
View File

@ -6,13 +6,51 @@
* Date Author Notes
* 2020-01-15 bigmagic the first version
* 2020-08-10 SummerGift support clang compiler
* 2023-04-29 GuEe-GUI support kernel's ARM64 boot header
*/
#include "rtconfig.h"
.section ".text.entrypoint","ax"
.global __start
__start:
.section ".text.entrypoint","ax"
#ifdef RT_USING_OFW
/*
* Our goal is to boot the rt-thread as possible without modifying the
* bootloader's config, so we use the kernel's boot header for ARM64:
* https://www.kernel.org/doc/html/latest/arm64/booting.html#call-the-kernel-image
*/
_head:
b _start /* Executable code */
.long 0 /* Executable code */
.quad _text_offset /* Image load offset from start of RAM, little endian */
.quad _end - _head /* Effective Image size, little endian (_end defined in link.lds) */
.quad 0xa /* Kernel flags, little endian */
.quad 0 /* Reserved */
.quad 0 /* Reserved */
.quad 0 /* Reserved */
.ascii "ARM\x64" /* Magic number */
.long 0 /* Reserved (used for PE COFF offset) */
#endif
/* Variable registers: x21~x28 */
dtb_paddr .req x21
boot_arg0 .req x22
boot_arg1 .req x23
boot_arg2 .req x24
stack_top .req x25
.global _start
_start:
/*
* Boot CPU general-purpose register settings:
* x0 = physical address of device tree blob (dtb) in system RAM.
* x1 = 0 (reserved for future use)
* x2 = 0 (reserved for future use)
* x3 = 0 (reserved for future use)
*/
mov dtb_paddr, x0
mov boot_arg0, x1
mov boot_arg1, x2
mov boot_arg2, x3
#ifdef ARCH_ARM_BOOTWITH_FLUSH_CACHE
bl __asm_flush_dcache_all
#endif
@ -127,8 +165,8 @@ __start:
dsb sy
#ifdef RT_USING_SMART
ldr x2, =__start
GET_PHY x3, __start
ldr x2, =_start
GET_PHY x3, _start
sub x3, x3, x2
#else
mov x3,0

191
libcpu/aarch64/link.lds.S Normal file
View File

@ -0,0 +1,191 @@
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Date Author Notes
* 2017-5-30 bernard first version
*/
#include "rtconfig.h"
OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
OUTPUT_ARCH(aarch64)
#ifndef ARCH_TEXT_OFFSET
#define ARCH_TEXT_OFFSET 0x200000 /* We always boot in address where is 2MB aligned */
#endif
#ifndef ARCH_RAM_OFFSET
#define ARCH_RAM_OFFSET 0
#endif
SECTIONS
{
_text_offset = ARCH_TEXT_OFFSET;
#ifdef RT_USING_SMART
. = KERNEL_VADDR_START + _text_offset;
#else
. = ARCH_RAM_OFFSET + _text_offset;
#endif
.text :
{
PROVIDE(__text_start = .);
KEEP(*(.text.entrypoint)) /* The entry point */
*(.vectors)
*(.text) /* remaining code */
*(.text.*) /* remaining code */
*(.rodata) /* read-only data (constants) */
*(.rodata*)
*(.glue_7)
*(.glue_7t)
*(.gnu.linkonce.t*)
/* section information for utest */
. = ALIGN(8);
PROVIDE(__rt_utest_tc_tab_start = .);
KEEP(*(UtestTcTab))
PROVIDE(__rt_utest_tc_tab_end = .);
/* section information for finsh shell */
. = ALIGN(8);
PROVIDE(__fsymtab_start = .);
KEEP(*(FSymTab))
PROVIDE(__fsymtab_end = .);
. = ALIGN(8);
PROVIDE(__vsymtab_start = .);
KEEP(*(VSymTab))
PROVIDE(__vsymtab_end = .);
. = ALIGN(8);
/* section information for modules */
. = ALIGN(8);
PROVIDE(__rtmsymtab_start = .);
KEEP(*(RTMSymTab))
PROVIDE(__rtmsymtab_end = .);
/* section information for initialization */
. = ALIGN(8);
PROVIDE(__rt_init_start = .);
KEEP(*(SORT(.rti_fn*)))
PROVIDE(__rt_init_end = .);
/* section information for rt_ofw. */
. = ALIGN(16);
PROVIDE(__rt_ofw_data_start = .);
KEEP(*(SORT(.rt_ofw_data.*)))
PROVIDE(__rt_ofw_data_end = .);
. = ALIGN(16);
PROVIDE(__text_end = .);
}
.eh_frame_hdr :
{
*(.eh_frame_hdr)
*(.eh_frame_entry)
}
.eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) }
. = ALIGN(8);
.data :
{
*(.data)
*(.data.*)
*(.data1)
*(.data1.*)
. = ALIGN(16);
_gp = ABSOLUTE(.); /* Base of small data */
*(.sdata)
*(.sdata.*)
*(.rel.local)
}
. = ALIGN(8);
.ctors :
{
PROVIDE(__ctors_start = .);
/* new GCC version uses .init_array */
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE(__ctors_end = .);
}
.dtors :
{
PROVIDE(__dtors_start = .);
KEEP(*(SORT(.dtors.*)))
KEEP(*(.dtors))
PROVIDE(__dtors_end = .);
}
. = ALIGN(16);
.bss :
{
/*
* We need some free space to page or cpu stack, move .bss.noclean.*
* to optimize size.
*/
PROVIDE(__bss_noclean_start = .);
*(.bss.noclean.*)
PROVIDE(__bss_noclean_end = .);
. = ALIGN(8);
PROVIDE(__bss_start = .);
*(.bss)
*(.bss.*)
*(.dynbss)
*(COMMON)
. = ALIGN(8);
PROVIDE(__bss_end = .);
}
/*
* We should make the bootloader know the size of memory we need,
* so we MUST calc the image's size with section '.bss'.
*/
_end = .;
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
/* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to the beginning
* of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
__data_size = SIZEOF(.data);
__bss_size = SIZEOF(.bss);
}

17
tools/building.py
View File

@ -513,6 +513,23 @@ def AddDepend(option):
else:
print('AddDepend arguements are illegal!')
def Preprocessing(input, suffix, output = None, CPPPATH = None):
if hasattr(rtconfig, "CPP") and hasattr(rtconfig, "CPPFLAGS"):
if output == None:
import re
output = re.sub(r'[\.]+.*', suffix, input)
inc = ' '
cpppath = CPPPATH
for cpppath_item in cpppath:
inc += ' -I' + cpppath_item
CPP = rtconfig.EXEC_PATH + '/' + rtconfig.CPP
if not os.path.exists(CPP):
CPP = rtconfig.CPP
CPP += rtconfig.CPPFLAGS
path = GetCurrentDir() + '/'
os.system(CPP + inc + ' ' + path + input + ' -o ' + path + output)
else:
print('CPP tool or CPPFLAGS is undefined in rtconfig!')
def MergeGroup(src_group, group):
src_group['src'] = src_group['src'] + group['src']