From patchwork Tue Mar 5 17:09:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Jones X-Patchwork-Id: 13582767 Received: from out-175.mta0.migadu.com (out-175.mta0.migadu.com [91.218.175.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A964614016 for ; Tue, 5 Mar 2024 17:09:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.175 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709658557; cv=none; b=ftKW9q/tPYPvTYud+OcguL8rC4O9mOr6/ve0DfMo2J3C6o07xA3sr8p7I6rSEbby7SGvo8/PC1IVmboMPJ0wcanokXBOsyqnt9T4SMbod8SJ9ZOs6uTfvXX0lL9Ai3P9beVhnccthnErUtOY/fyCaQNi1Hc2I9N/K6oew9Z2mCk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709658557; c=relaxed/simple; bh=ZJKgTuPnfJGmpgHeoV6+SlfXo3xeRqVDfg0Yk+UNlM8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-type; b=owctLjLfyDKrc54sn31zKISxINc0e78PYxZqV7ElBdO3fBqEGml3c5q6+cQnf9TkYgnpuLR93Ch8gKU3aW6DvmeJP1yMd6J8/r+dFUpfJTDIQvZNdxI60mQ9VIcvqIsYu/y7bvdHNefPKO9dcbkUCoS+/xKI0E7Xq5ymu/pl1rM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=w4R3Ko7O; arc=none smtp.client-ip=91.218.175.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="w4R3Ko7O" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1709658553; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JEkii+ZUUDxVjBU5t0scqe27a63E+nEpVgIsxtHEnzI=; b=w4R3Ko7O9rzg92q5xOgCsjSbHr76/fLWnhppK8KtkGsqxr//gHVZNQnAkfmn9NUq7PEAKq KEu/jbCNaj+XuYxc/d+Va0hetozTfKmjA4pEmbnQ8QdCJcChB2yGk8xbx0LpzcBG7yOUF9 t2q+46M/6Z40XOz6Ih3hPdkSNQdJpj8= From: Andrew Jones To: kvm@vger.kernel.org, kvm-riscv@lists.infradead.org Cc: pbonzini@redhat.com, thuth@redhat.com Subject: [kvm-unit-tests PATCH v2 05/13] riscv: Import gnu-efi files Date: Tue, 5 Mar 2024 18:09:04 +0100 Message-ID: <20240305170858.395836-20-andrew.jones@linux.dev> In-Reply-To: <20240305170858.395836-15-andrew.jones@linux.dev> References: <20240305170858.395836-15-andrew.jones@linux.dev> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-type: text/plain X-Migadu-Flow: FLOW_OUT Signed-off-by: Andrew Jones --- riscv/efi/crt0-efi-riscv64.S | 187 ++++++++++++++++++++++++++++++++++ riscv/efi/elf_riscv64_efi.lds | 142 ++++++++++++++++++++++++++ riscv/efi/reloc_riscv64.c | 90 ++++++++++++++++ 3 files changed, 419 insertions(+) create mode 100644 riscv/efi/crt0-efi-riscv64.S create mode 100644 riscv/efi/elf_riscv64_efi.lds create mode 100644 riscv/efi/reloc_riscv64.c diff --git a/riscv/efi/crt0-efi-riscv64.S b/riscv/efi/crt0-efi-riscv64.S new file mode 100644 index 000000000000..712ed03fc06e --- /dev/null +++ b/riscv/efi/crt0-efi-riscv64.S @@ -0,0 +1,187 @@ +/* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */ +/* + * Copright (C) 2014 Linaro Ltd. + * Copright (C) 2018 Alexander Graf + * + * 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 and this list of conditions, without modification. + * 2. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License as published by the Free Software Foundation; + * either version 2 of the License, or (at your option) any later version. + */ + +#ifndef EFI_SUBSYSTEM +#define EFI_SUBSYSTEM 10 +#endif + + .section .text.head + + /* + * Magic "MZ" signature for PE/COFF + */ + .globl ImageBase +ImageBase: + .ascii "MZ" + .skip 58 // 'MZ' + pad + offset == 64 + .4byte pe_header - ImageBase // Offset to the PE header. +pe_header: + .ascii "PE" + .2byte 0 +coff_header: + .2byte 0x5064 // riscv64 + .2byte 4 // nr_sections + .4byte 0 // TimeDateStamp + .4byte 0 // PointerToSymbolTable + .4byte 0 // NumberOfSymbols + .2byte section_table - optional_header // SizeOfOptionalHeader + .2byte 0x206 // Characteristics. + // IMAGE_FILE_DEBUG_STRIPPED | + // IMAGE_FILE_EXECUTABLE_IMAGE | + // IMAGE_FILE_LINE_NUMS_STRIPPED +optional_header: + .2byte 0x20b // PE32+ format + .byte 0x02 // MajorLinkerVersion + .byte 0x14 // MinorLinkerVersion + .4byte _text_size - ImageBase // SizeOfCode + .4byte _alldata_size - ImageBase // SizeOfInitializedData + .4byte 0 // SizeOfUninitializedData + .4byte _start - ImageBase // AddressOfEntryPoint + .4byte _text - ImageBase // BaseOfCode + +extra_header_fields: + .8byte 0 // ImageBase + .4byte 0x1000 // SectionAlignment + .4byte 0x1000 // FileAlignment + .2byte 0 // MajorOperatingSystemVersion + .2byte 0 // MinorOperatingSystemVersion + .2byte 0 // MajorImageVersion + .2byte 0 // MinorImageVersion + .2byte 0 // MajorSubsystemVersion + .2byte 0 // MinorSubsystemVersion + .4byte 0 // Win32VersionValue + + .4byte _image_end - ImageBase // SizeOfImage + + // Everything before the kernel image is considered part of the header + .4byte _text - ImageBase // SizeOfHeaders + .4byte 0 // CheckSum + .2byte EFI_SUBSYSTEM // Subsystem + .2byte 0 // DllCharacteristics + .8byte 0 // SizeOfStackReserve + .8byte 0 // SizeOfStackCommit + .8byte 0 // SizeOfHeapReserve + .8byte 0 // SizeOfHeapCommit + .4byte 0 // LoaderFlags + .4byte 0x10 // NumberOfRvaAndSizes + + .8byte 0 // ExportTable + .8byte 0 // ImportTable + .8byte 0 // ResourceTable + .8byte 0 // ExceptionTable + .8byte 0 // CertificationTable + .4byte _reloc - ImageBase // BaseRelocationTable (VirtualAddress) + .4byte _reloc_vsize - ImageBase // BaseRelocationTable (Size) + .8byte 0 // Debug + .8byte 0 // Architecture + .8byte 0 // Global Ptr + .8byte 0 // TLS Table + .8byte 0 // Load Config Table + .8byte 0 // Bound Import + .8byte 0 // IAT + .8byte 0 // Delay Import Descriptor + .8byte 0 // CLR Runtime Header + .8byte 0 // Reserved, must be zero + + // Section table +section_table: + + .ascii ".text\0\0\0" + .4byte _text_vsize - ImageBase // VirtualSize + .4byte _text - ImageBase // VirtualAddress + .4byte _text_size - ImageBase // SizeOfRawData + .4byte _text - ImageBase // PointerToRawData + .4byte 0 // PointerToRelocations (0 for executables) + .4byte 0 // PointerToLineNumbers (0 for executables) + .2byte 0 // NumberOfRelocations (0 for executables) + .2byte 0 // NumberOfLineNumbers (0 for executables) + .4byte 0x60000020 // Characteristics (section flags) + + /* + * The EFI application loader requires a relocation section + * because EFI applications must be relocatable. This is a + * dummy section as far as we are concerned. + */ + .ascii ".reloc\0\0" + .4byte _reloc_vsize - ImageBase // VirtualSize + .4byte _reloc - ImageBase // VirtualAddress + .4byte _reloc_size - ImageBase // SizeOfRawData + .4byte _reloc - ImageBase // PointerToRawData + .4byte 0 // PointerToRelocations + .4byte 0 // PointerToLineNumbers + .2byte 0 // NumberOfRelocations + .2byte 0 // NumberOfLineNumbers + .4byte 0x42000040 // Characteristics (section flags) + + .ascii ".data\0\0\0" + .4byte _data_vsize - ImageBase // VirtualSize + .4byte _data - ImageBase // VirtualAddress + .4byte _data_size - ImageBase // SizeOfRawData + .4byte _data - ImageBase // PointerToRawData + .4byte 0 // PointerToRelocations + .4byte 0 // PointerToLineNumbers + .2byte 0 // NumberOfRelocations + .2byte 0 // NumberOfLineNumbers + .4byte 0xC0000040 // Characteristics (section flags) + + .ascii ".rodata\0" + .4byte _rodata_vsize - ImageBase // VirtualSize + .4byte _rodata - ImageBase // VirtualAddress + .4byte _rodata_size - ImageBase // SizeOfRawData + .4byte _rodata - ImageBase // PointerToRawData + .4byte 0 // PointerToRelocations + .4byte 0 // PointerToLineNumbers + .2byte 0 // NumberOfRelocations + .2byte 0 // NumberOfLineNumbers + .4byte 0x40000040 // Characteristics (section flags) + + .text + .globl _start + .type _start,%function +_start: + addi sp, sp, -24 + sd a0, 0(sp) + sd a1, 8(sp) + sd ra, 16(sp) + lla a0, ImageBase + lla a1, _DYNAMIC + call _relocate + bne a0, zero, 0f + ld a1, 8(sp) + ld a0, 0(sp) + call _entry + ld ra, 16(sp) +0: addi sp, sp, 24 + ret + +// hand-craft a dummy .reloc section so EFI knows it's a relocatable executable: + + .data +dummy: .4byte 0 + +#define IMAGE_REL_ABSOLUTE 0 + .section .reloc, "a" +label1: + .4byte dummy-label1 // Page RVA + .4byte 12 // Block Size (2*4+2*2), must be aligned by 32 Bits + .2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy + .2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy + +#if defined(__ELF__) && defined(__linux__) + .section .note.GNU-stack,"",%progbits +#endif diff --git a/riscv/efi/elf_riscv64_efi.lds b/riscv/efi/elf_riscv64_efi.lds new file mode 100644 index 000000000000..ac7055a5619b --- /dev/null +++ b/riscv/efi/elf_riscv64_efi.lds @@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */ + +OUTPUT_FORMAT("elf64-littleriscv", "elf64-littleriscv", "elf64-littleriscv") +OUTPUT_ARCH(riscv) +ENTRY(_start) +SECTIONS +{ + .text 0 : { + *(.text.head) + . = ALIGN(4096); + _text = .; + *(.text) + *(.text.*) + *(.gnu.linkonce.t.*) + *(.plt) + . = ALIGN(16); + _evtext = .; + . = ALIGN(4096); + _etext = .; + } =0 + _text_vsize = _evtext - _text; + _text_size = _etext - _text; + . = ALIGN(4096); + _reloc = .; + .reloc : { + *(.reloc) + _evreloc = .; + . = ALIGN(4096); + _ereloc = .; + } =0 + _reloc_vsize = _evreloc - _reloc; + _reloc_size = _ereloc - _reloc; + . = ALIGN(4096); + _data = .; + .dynamic : { *(.dynamic) } + . = ALIGN(4096); + .data : + { + *(.sdata) + *(.data) + *(.data1) + *(.data.*) + *(.got.plt) + *(.got) + + /* + * Note that these aren't the using the GNU "CONSTRUCTOR" output section + * command, so they don't start with a size. Because of p2align and the + * end/END definitions, and the fact that they're mergeable, they can also + * have NULLs which aren't guaranteed to be at the end. + */ + . = ALIGN(16); + __init_array_start = .; + *(SORT(.init_array.*)) + *(.init_array) + __init_array_end = .; + . = ALIGN(16); + __CTOR_LIST__ = .; + *(SORT(.ctors.*)) + *(.ctors) + __CTOR_END__ = .; + . = ALIGN(16); + __DTOR_LIST__ = .; + *(SORT(.dtors.*)) + *(.dtors) + __DTOR_END__ = .; + . = ALIGN(16); + __fini_array_start = .; + *(SORT(.fini_array.*)) + *(.fini_array) + __fini_array_end = .; + + /* the EFI loader doesn't seem to like a .bss section, so we stick + it all into .data: */ + . = ALIGN(16); + _bss = .; + *(.sbss) + *(.scommon) + *(.dynbss) + *(.bss) + *(.bss.*) + *(COMMON) + . = ALIGN(16); + _bss_end = .; + _evdata = .; + . = ALIGN(4096); + _edata = .; + } =0 + _data_vsize = _evdata - _data; + _data_size = _edata - _data; + + . = ALIGN(4096); + _rodata = .; + .rela : + { + *(.rela.text*) + *(.rela.data*) + *(.rela.got) + *(.rela.dyn) + *(.rela.stab) + *(.rela.init_array*) + *(.rela.fini_array*) + *(.rela.ctors*) + *(.rela.dtors*) + + } + . = ALIGN(4096); + .rela.plt : { *(.rela.plt) } + . = ALIGN(4096); + .rodata : { + *(.rodata*) + _evrodata = .; + . = ALIGN(4096); + _erodata = .; + } =0 + _rodata_vsize = _evrodata - _rodata; + _rodata_size = _erodata - _rodata; + _image_end = .; + _alldata_size = _image_end - _reloc; + + . = ALIGN(4096); + .dynsym : { *(.dynsym) } + . = ALIGN(4096); + .dynstr : { *(.dynstr) } + . = ALIGN(4096); + .note.gnu.build-id : { *(.note.gnu.build-id) } + . = ALIGN(4096); + .hash : { *(.hash) } + . = ALIGN(4096); + .gnu.hash : { *(.gnu.hash) } + . = ALIGN(4096); + .eh_frame : { *(.eh_frame) } + . = ALIGN(4096); + .gcc_except_table : { *(.gcc_except_table*) } + /DISCARD/ : + { + *(.rela.reloc) + *(.note.GNU-stack) + } + .comment 0 : { *(.comment) } +} + diff --git a/riscv/efi/reloc_riscv64.c b/riscv/efi/reloc_riscv64.c new file mode 100644 index 000000000000..e4296026e2a4 --- /dev/null +++ b/riscv/efi/reloc_riscv64.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause +/* reloc_riscv.c - position independent ELF shared object relocator + Copyright (C) 2018 Alexander Graf + Copyright (C) 2014 Linaro Ltd. + Copyright (C) 1999 Hewlett-Packard Co. + Contributed by David Mosberger . + + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * 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. + * Neither the name of Hewlett-Packard Co. nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + + 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 ANYDIRECT, 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 + +#include + +#define Elf_Dyn Elf64_Dyn +#define Elf_Rela Elf64_Rela +#define ELF_R_TYPE ELF64_R_TYPE + +EFI_STATUS EFIAPI _relocate(long ldbase, Elf_Dyn *dyn) +{ + long relsz = 0, relent = 0; + Elf_Rela *rel = NULL; + unsigned long *addr; + int i; + + for (i = 0; dyn[i].d_tag != DT_NULL; ++i) { + switch (dyn[i].d_tag) { + case DT_RELA: + rel = (Elf_Rela *)((unsigned long)dyn[i].d_un.d_ptr + ldbase); + break; + case DT_RELASZ: + relsz = dyn[i].d_un.d_val; + break; + case DT_RELAENT: + relent = dyn[i].d_un.d_val; + break; + default: + break; + } + } + + if (!rel && relent == 0) + return EFI_SUCCESS; + + if (!rel || relent == 0) + return EFI_LOAD_ERROR; + + while (relsz > 0) { + /* apply the relocs */ + switch (ELF_R_TYPE(rel->r_info)) { + case R_RISCV_RELATIVE: + addr = (unsigned long *)(ldbase + rel->r_offset); + *addr = ldbase + rel->r_addend; + break; + default: + break; + } + rel = (Elf_Rela *)((char *)rel + relent); + relsz -= relent; + } + return EFI_SUCCESS; +}