Firmware/MNRS-BM-BSP
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adds some hooks for SMT startup

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This commit is contained in:
Eyck Jentzsch
2025-11-29 12:49:50 +01:00
parent 5f220ff09b
commit c8ea882b3e
5 changed files with 51 additions and 356 deletions
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1
env/entry.S vendored
View File

@@ -92,5 +92,4 @@ trap_entry:
handle_trap:
1:
j 1b
#endif

175
env/riscv_vp/flash.lds vendored
View File

@@ -4,174 +4,9 @@ ENTRY( _start )
INCLUDE memory_map.ld
PHDRS
{
flash PT_LOAD;
ram_init PT_LOAD;
ram PT_NULL;
dram PT_NULL;
}
REGION_ALIAS("REGION_TEXT", flash);
REGION_ALIAS("REGION_RODATA", flash);
REGION_ALIAS("REGION_DATA", ram);
REGION_ALIAS("REGION_BSS", ram);
SECTIONS
{
__stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
.init ORIGIN(flash) :
{
KEEP (*(SORT_NONE(.init)))
} >flash AT>flash :flash
.text :
{
*(.text.unlikely .text.unlikely.*)
*(.text.startup .text.startup.*)
*(.text .text.*)
*(.gnu.linkonce.t.*)
} >flash AT>flash :flash
.fini :
{
KEEP (*(SORT_NONE(.fini)))
} >flash AT>flash :flash
PROVIDE (__etext = .);
PROVIDE (_etext = .);
PROVIDE (etext = .);
.rodata :
{
*(.rdata)
*(.rodata .rodata.*)
*(.gnu.linkonce.r.*)
} >flash AT>flash :flash
. = ALIGN(4);
.preinit_array :
{
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array))
PROVIDE_HIDDEN (__preinit_array_end = .);
} >flash AT>flash :flash
.init_array :
{
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
PROVIDE_HIDDEN (__init_array_end = .);
} >flash AT>flash :flash
.fini_array :
{
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
PROVIDE_HIDDEN (__fini_array_end = .);
} >flash AT>flash :flash
.ctors :
{
/* gcc uses crtbegin.o to find the start of
the constructors, so we make sure it is
first. Because this is a wildcard, it
doesn't matter if the user does not
actually link against crtbegin.o; the
linker won't look for a file to match a
wildcard. The wildcard also means that it
doesn't matter which directory crtbegin.o
is in. */
KEEP (*crtbegin.o(.ctors))
KEEP (*crtbegin?.o(.ctors))
/* We don't want to include the .ctor section from
the crtend.o file until after the sorted ctors.
The .ctor section from the crtend file contains the
end of ctors marker and it must be last */
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
} >flash AT>flash :flash
.dtors :
{
KEEP (*crtbegin.o(.dtors))
KEEP (*crtbegin?.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
} >flash AT>flash :flash
.dummy :
{
*(.comment.*)
}
.lalign :
{
. = ALIGN(4);
PROVIDE( _data_lma = . );
} >flash AT>flash :flash
.dalign :
{
. = ALIGN(4);
PROVIDE( _data = . );
} >ram AT>flash :ram_init
.data :
{
__DATA_BEGIN__ = .;
*(.data .data.*)
*(.gnu.linkonce.d.*)
} >ram AT>flash :ram_init
.sdata :
{
__SDATA_BEGIN__ = .;
*(.sdata .sdata.*)
*(.gnu.linkonce.s.*)
} >ram AT>flash :ram_init
.srodata :
{
*(.srodata.cst16)
*(.srodata.cst8)
*(.srodata.cst4)
*(.srodata.cst2)
*(.srodata .srodata.*)
} >ram AT>flash :ram_init
. = ALIGN(4);
PROVIDE( _edata = . );
PROVIDE( edata = . );
PROVIDE( _fbss = . );
PROVIDE( __bss_start = . );
.bss :
{
*(.sbss*)
*(.gnu.linkonce.sb.*)
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(4);
} >ram AT>ram :ram
. = ALIGN(8);
__BSS_END__ = .;
__global_pointer$ = MIN(__SDATA_BEGIN__ + 0x800, MAX(__DATA_BEGIN__ + 0x800, __BSS_END__ - 0x800));
PROVIDE( _end = . );
PROVIDE( end = . );
.stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
{
PROVIDE( _heap_end = . );
. = __stack_size;
PROVIDE( _sp = . );
} >ram AT>ram :ram
PROVIDE( tohost = . );
PROVIDE( fromhost = . + 8 );
}
INCLUDE sections.ld

175
env/riscv_vp/rom.lds vendored
View File

@@ -4,174 +4,9 @@ ENTRY( _start )
INCLUDE memory_map.ld
PHDRS
{
rom PT_LOAD;
ram_init PT_LOAD;
ram PT_NULL;
dram PT_NULL;
}
REGION_ALIAS("REGION_TEXT", rom);
REGION_ALIAS("REGION_RODATA", rom);
REGION_ALIAS("REGION_DATA", ram);
REGION_ALIAS("REGION_BSS", ram);
SECTIONS
{
__stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
.init ORIGIN(rom) :
{
KEEP (*(SORT_NONE(.init)))
} >rom AT>rom :rom
.text :
{
*(.text.unlikely .text.unlikely.*)
*(.text.startup .text.startup.*)
*(.text .text.*)
*(.gnu.linkonce.t.*)
} >rom AT>rom :rom
.fini :
{
KEEP (*(SORT_NONE(.fini)))
} >rom AT>rom :rom
PROVIDE (__etext = .);
PROVIDE (_etext = .);
PROVIDE (etext = .);
.rodata :
{
*(.rdata)
*(.rodata .rodata.*)
*(.gnu.linkonce.r.*)
} >rom AT>rom :rom
. = ALIGN(4);
.preinit_array :
{
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array))
PROVIDE_HIDDEN (__preinit_array_end = .);
} >rom AT>rom :rom
.init_array :
{
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
PROVIDE_HIDDEN (__init_array_end = .);
} >rom AT>rom :rom
.fini_array :
{
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
PROVIDE_HIDDEN (__fini_array_end = .);
} >rom AT>rom :rom
.ctors :
{
/* gcc uses crtbegin.o to find the start of
the constructors, so we make sure it is
first. Because this is a wildcard, it
doesn't matter if the user does not
actually link against crtbegin.o; the
linker won't look for a file to match a
wildcard. The wildcard also means that it
doesn't matter which directory crtbegin.o
is in. */
KEEP (*crtbegin.o(.ctors))
KEEP (*crtbegin?.o(.ctors))
/* We don't want to include the .ctor section from
the crtend.o file until after the sorted ctors.
The .ctor section from the crtend file contains the
end of ctors marker and it must be last */
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
} >rom AT>rom :rom
.dtors :
{
KEEP (*crtbegin.o(.dtors))
KEEP (*crtbegin?.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
} >rom AT>rom :rom
.dummy :
{
*(.comment.*)
}
.lalign :
{
. = ALIGN(4);
PROVIDE( _data_lma = . );
} >rom AT>rom :rom
.dalign :
{
. = ALIGN(4);
PROVIDE( _data = . );
} >ram AT>rom :ram_init
.data :
{
__DATA_BEGIN__ = .;
*(.data .data.*)
*(.gnu.linkonce.d.*)
} >ram AT>rom :ram_init
.sdata :
{
__SDATA_BEGIN__ = .;
*(.sdata .sdata.*)
*(.gnu.linkonce.s.*)
} >ram AT>rom :ram_init
.srodata :
{
*(.srodata.cst16)
*(.srodata.cst8)
*(.srodata.cst4)
*(.srodata.cst2)
*(.srodata .srodata.*)
} >ram AT>rom :ram_init
. = ALIGN(4);
PROVIDE( _edata = . );
PROVIDE( edata = . );
PROVIDE( _fbss = . );
PROVIDE( __bss_start = . );
.bss :
{
*(.sbss*)
*(.gnu.linkonce.sb.*)
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(4);
} >ram AT>ram :ram
. = ALIGN(8);
__BSS_END__ = .;
__global_pointer$ = MIN(__SDATA_BEGIN__ + 0x800, MAX(__DATA_BEGIN__ + 0x800, __BSS_END__ - 0x800));
PROVIDE( _end = . );
PROVIDE( end = . );
.stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
{
PROVIDE( _heap_end = . );
. = __stack_size;
PROVIDE( _sp = . );
} >ram AT>ram :ram
PROVIDE( tohost = . );
PROVIDE( fromhost = . + 8 );
}
INCLUDE sections.ld

24
env/riscv_vp/sections.ld vendored
View File

@@ -9,7 +9,7 @@ PHDRS
SECTIONS
{
__stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
__stack_segment_size = DEFINED(__stack_segment_size) ? __stack_segment_size : __stack_size;
.init ORIGIN(REGION_TEXT) :
{
KEEP (*(SORT_NONE(.init)))
@@ -39,6 +39,15 @@ SECTIONS
*(.gnu.linkonce.r.*)
} >REGION_RODATA AT>REGION_RODATA :flash
.srodata :
{
*(.srodata.cst16)
*(.srodata.cst8)
*(.srodata.cst4)
*(.srodata.cst2)
*(.srodata .srodata.*)
} >REGION_RODATA AT>REGION_RODATA :flash
. = ALIGN(4);
.preinit_array :
@@ -126,15 +135,6 @@ SECTIONS
*(.gnu.linkonce.s.*)
} >REGION_DATA AT>REGION_RODATA :ram_init
.srodata :
{
*(.srodata.cst16)
*(.srodata.cst8)
*(.srodata.cst4)
*(.srodata.cst2)
*(.srodata .srodata.*)
} >REGION_DATA AT>REGION_RODATA :ram_init
. = ALIGN(4);
PROVIDE( _edata = . );
PROVIDE( edata = . );
@@ -157,10 +157,10 @@ SECTIONS
PROVIDE( _end = . );
PROVIDE( end = . );
.stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
.stack ORIGIN(ram) + LENGTH(ram) - __stack_segment_size :
{
PROVIDE( _heap_end = . );
. = __stack_size;
. = __stack_segment_size;
PROVIDE( _sp = . );
} >REGION_BSS AT>REGION_BSS :ram

32
env/start.S vendored
View File

@@ -9,18 +9,35 @@ _start:
.option push
.option norelax
.option norvc
//#ifdef WITH_SIGNATURE
#ifdef WITH_SIGNATURE
j 1f
.2byte 0x4e4d
.2byte 0x5352
.4byte 0x669
1:
//#endif
#endif
la gp, __global_pointer$
.option pop
la sp, _sp
csrr t0, mhartid // Get hart ID
la t1, __stack_size // stack size
la sp, _sp // Base stack address
/* this loop is to avoid multiplication which is not available on all ISAs */
1:
beqz t0, 2f
sub sp, sp, t1 // Subtract __stack_size to get per-hart stack base
addi t0, t0, -1
j 1b
2:
la t0, trap_entry
csrw mtvec, t0
#ifdef HARTX_WAIT4WFI
/* block other cores until hart 0 has finished initialization */
csrr t0, mhartid
beqz t0, hart0_init
wfi
j hartx_start
hart0_init:
#endif
/* Load data section */
la a0, _data_lma
la a1, _data
@@ -50,6 +67,10 @@ _start:
call atexit
call __libc_init_array
#endif
la a0, mtx
li t0, 1
sw t0, 0(a0)
hartx_start:
#ifndef __riscv_float_abi_soft
/* Enable FPU */
li t0, MSTATUS_FS
@@ -66,3 +87,8 @@ _start:
li a1, 0
call main
tail _exit
.data
mtx:
.word 0 # 32-bit value