diff options
Diffstat (limited to 'bsps/riscv/shared')
| -rw-r--r-- | bsps/riscv/shared/doxygen.h | 8 | ||||
| -rw-r--r-- | bsps/riscv/shared/start/bspgetworkarea.c | 144 | ||||
| -rw-r--r-- | bsps/riscv/shared/start/linkcmds.base.in | 410 | ||||
| -rw-r--r-- | bsps/riscv/shared/start/start.S | 24 |
4 files changed, 175 insertions, 411 deletions
diff --git a/bsps/riscv/shared/doxygen.h b/bsps/riscv/shared/doxygen.h index dc95013d05..1f206ad638 100644 --- a/bsps/riscv/shared/doxygen.h +++ b/bsps/riscv/shared/doxygen.h @@ -1,4 +1,12 @@ /** + * @file + * + * @ingroup RTEMSImplDoxygen + * + * @brief This header file defines riscv-specific groups. + */ + +/** * @defgroup RTEMSBSPsRISCV RISC-V * * @ingroup RTEMSBSPs diff --git a/bsps/riscv/shared/start/bspgetworkarea.c b/bsps/riscv/shared/start/bspgetworkarea.c new file mode 100644 index 0000000000..d802ffea42 --- /dev/null +++ b/bsps/riscv/shared/start/bspgetworkarea.c @@ -0,0 +1,144 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + +/** + * @file + * + * @brief BSP specific initialization support routines + * + */ + +/* + * COPYRIGHT (c) 1989-2020. + * On-Line Applications Research Corporation (OAR). + * Cobham Gaisler AB. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <bsp.h> +#include <bsp/fdt.h> + +#include <rtems/sysinit.h> + +#include <libfdt.h> + +/* + * These are provided by the linkcmds for ALL of the BSPs which use this file. + */ +extern char WorkAreaBase[]; +extern char RamEnd[]; + +static Memory_Area _Memory_Areas[ 1 ]; + +static const char memory_path[] = "/memory"; + +static void* get_end_of_memory_from_fdt(void) +{ + const void *fdt; + const void *val; + int node; + int parent; + int ac; + int sc; + int len; + uintptr_t start; + uintptr_t size; + + fdt = bsp_fdt_get(); + + node = fdt_path_offset_namelen( + fdt, + memory_path, + (int) sizeof(memory_path) - 1 + ); + + if (node < 0) { + return NULL; + } + + parent = fdt_parent_offset(fdt, node); + if (parent < 0) { + return NULL; + } + + ac = fdt_address_cells(fdt, parent); + if (ac != 1 && ac != 2) { + return NULL; + } + + sc = fdt_size_cells(fdt, parent); + if (sc != 1 && sc != 2) { + return NULL; + } + + if (sc > ac) { + return NULL; + } + + val = fdt_getprop(fdt, node, "reg", &len); + if (len < sc + ac) { + return NULL; + } + + if (ac == 1) { + start = fdt32_to_cpu(((fdt32_t *)val)[0]); + size = fdt32_to_cpu(((fdt32_t *)val)[1]); + } + + if (ac == 2) { + start = fdt64_to_cpu(((fdt64_t *)val)[0]); + + if (sc == 1) + size = fdt32_to_cpu(((fdt32_t *)(val+8))[0]); + else + size = fdt64_to_cpu(((fdt64_t *)val)[1]); + } + + return (void*) (start + size); +} + +static void bsp_memory_initialize( void ) +{ + void *end; + + /* get end of memory from the "/memory" node in the fdt */ + end = get_end_of_memory_from_fdt(); + if (end == NULL) { + /* fall back to linker symbol if "/memory" node not found or invalid */ + end = RamEnd; + } + _Memory_Initialize( &_Memory_Areas[ 0 ], WorkAreaBase, end ); +} + +RTEMS_SYSINIT_ITEM( + bsp_memory_initialize, + RTEMS_SYSINIT_MEMORY, + RTEMS_SYSINIT_ORDER_MIDDLE +); + +static const Memory_Information _Memory_Information = + MEMORY_INFORMATION_INITIALIZER( _Memory_Areas ); + +const Memory_Information *_Memory_Get( void ) +{ + return &_Memory_Information; +} diff --git a/bsps/riscv/shared/start/linkcmds.base.in b/bsps/riscv/shared/start/linkcmds.base.in deleted file mode 100644 index 5f4294dd9a..0000000000 --- a/bsps/riscv/shared/start/linkcmds.base.in +++ /dev/null @@ -1,410 +0,0 @@ -/* Copyright (C) 2014-2018 Free Software Foundation, Inc. - Copying and distribution of this script, with or without modification, - are permitted in any medium without royalty provided the copyright - notice and this notice are preserved. */ - -/* - * Copyright (c) 2018 embedded brains GmbH. - * - * Copyright (c) 2015 University of York. - * Hesham ALMatary <hmka501@york.ac.uk> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -OUTPUT_ARCH(riscv) -ENTRY(_start) -@RISCV_LINKER_START_DIRECTIVE@(start.o) - -bsp_section_robarrier_align = DEFINED (bsp_section_robarrier_align) ? bsp_section_robarrier_align : 1; -bsp_section_rwbarrier_align = DEFINED (bsp_section_rwbarrier_align) ? bsp_section_rwbarrier_align : 1; - -MEMORY { - UNEXPECTED_SECTIONS : ORIGIN = 0xffffffff, LENGTH = 0 -} - -SECTIONS { - .start : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_start_begin = .; - KEEP (*(.bsp_start_text)) - KEEP (*(.bsp_start_data)) - bsp_section_start_end = .; - } > REGION_START AT > REGION_START - bsp_section_start_size = bsp_section_start_end - bsp_section_start_begin; - - .text : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_text_begin = .; - *(.text.unlikely .text.*_unlikely .text.unlikely.*) - *(.text.exit .text.exit.*) - *(.text.startup .text.startup.*) - *(.text.hot .text.hot.*) - *(.text .stub .text.* .gnu.linkonce.t.*) - /* .gnu.warning sections are handled specially by elf32.em. */ - *(.gnu.warning) - } > REGION_TEXT AT > REGION_TEXT_LOAD - .init : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - KEEP (*(SORT_NONE(.init))) - } > REGION_TEXT AT > REGION_TEXT_LOAD - .fini : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - KEEP (*(SORT_NONE(.fini))) - bsp_section_text_end = .; - } > REGION_TEXT AT > REGION_TEXT_LOAD - bsp_section_text_size = bsp_section_text_end - bsp_section_text_begin; - bsp_section_text_load_begin = LOADADDR (.text); - bsp_section_text_load_end = bsp_section_text_load_begin + bsp_section_text_size; - - .robarrier : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - . = ALIGN (bsp_section_robarrier_align); - } > REGION_RODATA AT > REGION_RODATA - - .rodata : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_rodata_begin = .; - *(.rodata .rodata.* .gnu.linkonce.r.*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .rodata1 : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.rodata1) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .sdata2 : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.sdata2 .sdata2.* .gnu.linkonce.s2.*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .sbss2 : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .eh_frame_hdr : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .eh_frame : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - KEEP (*(.eh_frame)) *(.eh_frame.*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .gcc_except_table : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.gcc_except_table .gcc_except_table.*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .gnu_extab : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.gnu_extab*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .tdata : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - _TLS_Data_begin = .; - *(.tdata .tdata.* .gnu.linkonce.td.*) - _TLS_Data_end = .; - } > REGION_RODATA AT > REGION_RODATA_LOAD - .tbss : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - _TLS_BSS_begin = .; - *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) - _TLS_BSS_end = .; - } > REGION_RODATA AT > REGION_RODATA_LOAD - _TLS_Data_size = _TLS_Data_end - _TLS_Data_begin; - _TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin; - _TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin; - _TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin; - _TLS_Size = _TLS_BSS_end - _TLS_Data_begin; - _TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss)); - .preinit_array : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - PROVIDE_HIDDEN (__preinit_array_start = .); - KEEP (*(.preinit_array)) - PROVIDE_HIDDEN (__preinit_array_end = .); - } > REGION_RODATA AT > REGION_RODATA_LOAD - .init_array : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - 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 = .); - } > REGION_RODATA AT > REGION_RODATA_LOAD - .fini_array : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - 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 = .); - } > REGION_RODATA AT > REGION_RODATA_LOAD - .ctors : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - /* 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)) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .dtors : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - KEEP (*crtbegin.o(.dtors)) - KEEP (*crtbegin?.o(.dtors)) - KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors)) - KEEP (*(SORT(.dtors.*))) - KEEP (*(.dtors)) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .data.rel.ro : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) - *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .jcr : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - KEEP (*(.jcr)) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .interp : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.interp) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .note.gnu.build-id : { *(.note.gnu.build-id) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .hash : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.hash) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .gnu.hash : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.gnu.hash) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .dynsym : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.dynsym) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .dynstr : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.dynstr) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .gnu.version : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.gnu.version) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .gnu.version_d : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.gnu.version_d) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .gnu.version_r : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.gnu.version_r) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .rela.dyn : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.rela.init) - *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) - *(.rela.fini) - *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) - *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) - *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) - *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) - *(.rela.ctors) - *(.rela.dtors) - *(.rela.got) - *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) - *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) - *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) - *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) - *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) - PROVIDE_HIDDEN (__rela_iplt_start = .); - *(.rela.iplt) - PROVIDE_HIDDEN (__rela_iplt_end = .); - } > REGION_RODATA AT > REGION_RODATA_LOAD - .rela.plt : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.rela.plt) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .plt : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.plt) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .iplt : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.iplt) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .dynamic : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.dynamic) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .tm_clone_table : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.tm_clone_table) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .got : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.got.plt) *(.igot.plt) *(.got) *(.igot) - } > REGION_RODATA AT > REGION_RODATA_LOAD - .rtemsroset : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - /* Special FreeBSD linker set sections */ - __start_set_sysctl_set = .; - *(set_sysctl_*); - __stop_set_sysctl_set = .; - *(set_domain_*); - *(set_pseudo_*); - - KEEP (*(SORT(.rtemsroset.*))) - bsp_section_rodata_end = .; - } > REGION_RODATA AT > REGION_RODATA_LOAD - bsp_section_rodata_size = bsp_section_rodata_end - bsp_section_rodata_begin; - bsp_section_rodata_load_begin = LOADADDR (.rodata); - bsp_section_rodata_load_end = bsp_section_rodata_load_begin + bsp_section_rodata_size; - - .rwbarrier : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - . = ALIGN (bsp_section_rwbarrier_align); - } > REGION_DATA AT > REGION_DATA - - .fast_text : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_fast_text_begin = .; - *(.bsp_fast_text) - bsp_section_fast_text_end = .; - } > REGION_FAST_TEXT AT > REGION_FAST_TEXT_LOAD - bsp_section_fast_text_size = bsp_section_fast_text_end - bsp_section_fast_text_begin; - bsp_section_fast_text_load_begin = LOADADDR (.fast_text); - bsp_section_fast_text_load_end = bsp_section_fast_text_load_begin + bsp_section_fast_text_size; - - .fast_data : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_fast_data_begin = .; - *(.bsp_fast_data) - bsp_section_fast_data_end = .; - } > REGION_FAST_DATA AT > REGION_FAST_DATA_LOAD - bsp_section_fast_data_size = bsp_section_fast_data_end - bsp_section_fast_data_begin; - bsp_section_fast_data_load_begin = LOADADDR (.fast_data); - bsp_section_fast_data_load_end = bsp_section_fast_data_load_begin + bsp_section_fast_data_size; - - .data : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_data_begin = .; - *(.data .data.* .gnu.linkonce.d.*) - SORT(CONSTRUCTORS) - } > REGION_DATA AT > REGION_DATA_LOAD - .data1 : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.data1) - } > REGION_DATA AT > REGION_DATA_LOAD - .rtemsrwset : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - KEEP (*(SORT(.rtemsrwset.*))) - } > REGION_DATA AT > REGION_DATA_LOAD - .htif ALIGN(4096) : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.htif) - } > REGION_DATA AT > REGION_DATA_LOAD - .sdata : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - __global_pointer$ = . + 0x800; - *(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata .srodata.*) - *(.sdata .sdata.* .gnu.linkonce.s.*) - bsp_section_data_end = .; - } > REGION_DATA AT > REGION_DATA_LOAD - bsp_section_data_size = bsp_section_data_end - bsp_section_data_begin; - bsp_section_data_load_begin = LOADADDR (.data); - bsp_section_data_load_end = bsp_section_data_load_begin + bsp_section_data_size; - - .sbss : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_bss_begin = .; - *(.dynsbss) - *(.sbss .sbss.* .gnu.linkonce.sb.*) - *(.scommon) - } > REGION_DATA AT > REGION_DATA - .bss : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - *(.dynbss) - *(.bss .bss.* .gnu.linkonce.b.*) - *(COMMON) - bsp_section_bss_end = .; - } > REGION_DATA AT > REGION_DATA - bsp_section_bss_size = bsp_section_bss_end - bsp_section_bss_begin; - - .rtemsstack (NOLOAD) : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_rtemsstack_begin = .; - *(SORT(.rtemsstack.*)) - bsp_section_rtemsstack_end = .; - } > REGION_RTEMSSTACK AT > REGION_RTEMSSTACK - bsp_section_rtemsstack_size = bsp_section_rtemsstack_end - bsp_section_rtemsstack_begin; - - .noinit (NOLOAD) : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - bsp_section_noinit_begin = .; - *(.noinit*) - bsp_section_noinit_end = .; - } > REGION_WORK AT > REGION_WORK - bsp_section_noinit_size = bsp_section_noinit_end - bsp_section_noinit_begin; - - .work (NOLOAD) : @RISCV_LINKER_ALIGN_DIRECTIVE@ { - /* - * The work section will occupy the remaining REGION_WORK region and - * contains the RTEMS work space and heap. - */ - bsp_section_work_begin = .; - . += ORIGIN (REGION_WORK) + LENGTH (REGION_WORK) - ABSOLUTE (.); - bsp_section_work_end = .; - } > REGION_WORK AT > REGION_WORK - bsp_section_work_size = bsp_section_work_end - bsp_section_work_begin; - - /* FIXME */ - RamBase = ORIGIN (REGION_WORK); - RamSize = LENGTH (REGION_WORK); - RamEnd = RamBase + RamSize; - WorkAreaBase = bsp_section_work_begin; - HeapSize = 0; - - /* 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) } - /* 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_line.* .debug_line_end) } - .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) } - /* DWARF 3. */ - .debug_pubtypes 0 : { *(.debug_pubtypes) } - .debug_ranges 0 : { *(.debug_ranges) } - /* DWARF 5. */ - .debug_addr 0 : { *(.debug_addr) } - .debug_line_str 0 : { *(.debug_line_str) } - .debug_loclists 0 : { *(.debug_loclists) } - .debug_macro 0 : { *(.debug_macro) } - .debug_names 0 : { *(.debug_names) } - .debug_rnglists 0 : { *(.debug_rnglists) } - .debug_str_offsets 0 : { *(.debug_str_offsets) } - .debug_sup 0 : { *(.debug_sup) } - .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) } - /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) } - .shstrtab 0 : { *(.shstrtab) } - .strtab 0 : { *(.strtab) } - .symtab 0 : { *(.symtab) } - .symtab_shndx 0 : { *(.symtab_shndx) } - __cap_relocs 0 : { *(__cap_relocs) } - - /* - * This is a RTEMS specific section to catch all unexpected input - * sections. In case you get an error like - * "section `.unexpected_sections' will not fit in region - * `UNEXPECTED_SECTIONS'" - * you have to figure out the offending input section and add it to the - * appropriate output section definition above. - */ - .unexpected_sections : { *(*) } > UNEXPECTED_SECTIONS -} diff --git a/bsps/riscv/shared/start/start.S b/bsps/riscv/shared/start/start.S index 04a62a26ce..f31d89335c 100644 --- a/bsps/riscv/shared/start/start.S +++ b/bsps/riscv/shared/start/start.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2018 embedded brains GmbH + * Copyright (c) 2018 embedded brains GmbH & Co. KG * Copyright (c) 2015 University of York. * Hesham Almatary <hesham@alumni.york.ac.uk> @@ -39,6 +39,8 @@ PUBLIC(_start) .section .bsp_start_text, "wax", @progbits .align 2 + .option arch, +zicsr + .option norelax TYPE_FUNC(_start) SYM(_start): @@ -64,6 +66,17 @@ SYM(_start): LADDR sp, _ISR_Stack_area_begin LADDR t2, _ISR_Stack_size csrr s0, mhartid + li t3, RISCV_BOOT_HARTID + sub s0, s0, t3 + + /* + * Check that this is a configured processor. If not, then there is + * not much that can be done since we do not have a stack available for + * this processor. Just loop forever in this case. + */ + LREG t3, _SMP_Processor_configured_maximum + bgeu s0, t3, .Lwfi + LADDR t0, _Per_CPU_Information slli t1, s0, PER_CPU_CONTROL_SIZE_LOG2 add s1, t0, t1 @@ -96,6 +109,9 @@ SYM(_start): tail boot_card #ifdef RTEMS_SMP +.Lwfi: + wfi + j .Lwfi .Lstart_on_secondary_processor: @@ -127,9 +143,15 @@ SYM(_start): mv a0, s1 call bsp_start_on_secondary_processor + .section .bsp_start_data, "aw" + + .type .Lsecondary_processor_go, @object + #if __riscv_xlen == 32 + .size .Lsecondary_processor_go, 4 .align 2 #elif __riscv_xlen == 64 + .size .Lsecondary_processor_go, 8 .align 3 #endif |