diff --git a/0354-add-riscv-linux-boot-support.patch b/0354-add-riscv-linux-boot-support.patch new file mode 100644 index 0000000000000000000000000000000000000000..886c40df83fb08a0224b42c32085be125907feef --- /dev/null +++ b/0354-add-riscv-linux-boot-support.patch @@ -0,0 +1,511 @@ +From: Nikita Ermakov +Subject: RISC-V: Update magic number, Allow to boot Linux with EFI stub on riscv64 +Date: Wed, 24 Mar 2021 17:50:28 +0300 + +Split a riscv loader to the riscv32 and riscv64 loaders. Add loader to boot +Linux with EFI stub on riscv64. It is based on the [grub-core/loader/arm64/ +linux.c] +--- + include/grub/riscv32/linux.h | 5 +++-- + include/grub/riscv64/linux.h | 5 +++-- + grub-core/loader/riscv/linux.c | 380 +++++++++++++++++++++++++++++++++++++ + 3 files changed, 386 insertions(+), 4 deletions(-) + +diff --git a/include/grub/riscv32/linux.h b/include/grub/riscv32/linux.h +index 512b777c8..2720ca55d 100644 +--- a/include/grub/riscv32/linux.h ++++ b/include/grub/riscv32/linux.h +@@ -19,7 +19,8 @@ + #ifndef GRUB_RISCV32_LINUX_HEADER + #define GRUB_RISCV32_LINUX_HEADER 1 + +-#define GRUB_LINUX_RISCV_MAGIC_SIGNATURE 0x52534356 /* 'RSCV' */ ++#define GRUB_LINUX_RISCV_MAGIC_SIGNATURE 0x05435352 /* little endian, ++'RSC\x05' */ + + /* From linux/Documentation/riscv/booting.txt */ + struct linux_riscv_kernel_header +@@ -32,7 +33,7 @@ struct linux_riscv_kernel_header + grub_uint64_t res2; /* reserved */ + grub_uint64_t res3; /* reserved */ + grub_uint64_t res4; /* reserved */ +- grub_uint32_t magic; /* Magic number, little endian, "RSCV" */ ++ grub_uint32_t magic; /* Magic number, little endian, "RSC\x05" */ + grub_uint32_t hdr_offset; /* Offset of PE/COFF header */ + }; + +diff --git a/include/grub/riscv64/linux.h b/include/grub/riscv64/linux.h +index 3630c30fb..7f6177c50 100644 +--- a/include/grub/riscv64/linux.h ++++ b/include/grub/riscv64/linux.h +@@ -19,7 +19,8 @@ + #ifndef GRUB_RISCV64_LINUX_HEADER + #define GRUB_RISCV64_LINUX_HEADER 1 + +-#define GRUB_LINUX_RISCV_MAGIC_SIGNATURE 0x52534356 /* 'RSCV' */ ++#define GRUB_LINUX_RISCV_MAGIC_SIGNATURE 0x05435352 /* little endian, ++'RSC\x05' */ + + #define GRUB_EFI_PE_MAGIC 0x5A4D + +@@ -34,7 +35,7 @@ struct linux_riscv_kernel_header + grub_uint64_t res2; /* reserved */ + grub_uint64_t res3; /* reserved */ + grub_uint64_t res4; /* reserved */ +- grub_uint32_t magic; /* Magic number, little endian, "RSCV" */ ++ grub_uint32_t magic; /* Magic number, little endian, "RSC\x05" */ + grub_uint32_t hdr_offset; /* Offset of PE/COFF header */ + }; + +diff --git a/grub-core/loader/riscv/linux.c b/grub-core/loader/riscv/linux.c +index d17c488e1..b136966ac 100644 +--- a/grub-core/loader/riscv/linux.c ++++ b/grub-core/loader/riscv/linux.c +@@ -1,59 +1,385 @@ +-/* +- * GRUB -- GRand Unified Bootloader +- * Copyright (C) 2018 Free Software Foundation, Inc. +- * +- * GRUB is free software: you can redistribute it and/or modify +- * it under the terms of the GNU General Public License as published by +- * the Free Software Foundation, either version 3 of the License, or +- * (at your option) any later version. +- * +- * GRUB is distributed in the hope that it will be useful, +- * but WITHOUT ANY WARRANTY; without even the implied warranty of +- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +- * GNU General Public License for more details. +- * +- * You should have received a copy of the GNU General Public License +- * along with GRUB. If not, see . +- */ +- +-#include +-#include +-#include +- +-GRUB_MOD_LICENSE ("GPLv3+"); +- +-static grub_err_t +-grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)), +- int argc __attribute__ ((unused)), +- char *argv[] __attribute__ ((unused))) +-{ +- grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, N_("Linux not supported yet")); +- +- return grub_errno; +-} +- +-static grub_err_t +-grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)), +- int argc __attribute__ ((unused)), +- char *argv[] __attribute__ ((unused))) +-{ +- grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, N_("Linux not supported yet")); +- +- return grub_errno; +-} +- +-static grub_command_t cmd_linux, cmd_initrd; +- +-GRUB_MOD_INIT (linux) +-{ +- cmd_linux = grub_register_command ("linux", grub_cmd_linux, 0, +- N_("Load Linux.")); +- cmd_initrd = grub_register_command ("initrd", grub_cmd_initrd, 0, +- N_("Load initrd.")); +-} +- +-GRUB_MOD_FINI (linux) +-{ +- grub_unregister_command (cmd_linux); +- grub_unregister_command (cmd_initrd); +-} ++/* ++ * GRUB -- GRand Unified Bootloader ++ * Copyright (C) 2018 Free Software Foundation, Inc. ++ * ++ * GRUB is free software: you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation, either version 3 of the License, or ++ * (at your option) any later version. ++ * ++ * GRUB is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with GRUB. If not, see . ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++GRUB_MOD_LICENSE ("GPLv3+"); ++ ++static grub_dl_t my_mod; ++static int loaded; ++ ++static void *kernel_addr; ++static grub_uint64_t kernel_size; ++ ++static char *linux_args; ++static grub_uint32_t cmdline_size; ++ ++static grub_addr_t initrd_start; ++static grub_addr_t initrd_end; ++ ++grub_err_t ++grub_arch_efi_linux_check_image (struct linux_arch_kernel_header * lh) ++{ ++ if (lh->magic != GRUB_LINUX_RISCV_MAGIC_SIGNATURE) ++ return grub_error(GRUB_ERR_BAD_OS, "invalid magic number"); ++ ++ if ((lh->code0 & 0xffff) != GRUB_PE32_MAGIC) ++ return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, ++ N_("plain image kernel not supported - rebuild with\ ++ONFIG_(U)EFI_STUB enabled")); ++ ++ grub_dprintf ("linux", "UEFI stub kernel:\n"); ++ grub_dprintf ("linux", "PE/COFF header @ %08x\n", lh->hdr_offset); ++ ++ return GRUB_ERR_NONE; ++} ++ ++static grub_err_t ++finalize_params_linux (void) ++{ ++ int node, retval; ++ ++ void *fdt; ++ ++ fdt = grub_fdt_load (GRUB_EFI_LINUX_FDT_EXTRA_SPACE); ++ ++ if (!fdt) ++ goto failure; ++ ++ node = grub_fdt_find_subnode (fdt, 0, "chosen"); ++ if (node < 0) ++ node = grub_fdt_add_subnode (fdt, 0, "chosen"); ++ ++ if (node < 1) ++ goto failure; ++ ++ /* Set initrd info */ ++ if (initrd_start && initrd_end > initrd_start) ++ { ++ grub_dprintf ("linux", "Initrd @ %p-%p\n", ++ (void *) initrd_start, (void *) initrd_end); ++ ++ retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-start", ++ initrd_start); ++ if (retval) ++ goto failure; ++ retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-end", ++ initrd_end); ++ if (retval) ++ goto failure; ++ } ++ ++ if (grub_fdt_install() != GRUB_ERR_NONE) ++ goto failure; ++ ++ return GRUB_ERR_NONE; ++ ++failure: ++ grub_fdt_unload(); ++ return grub_error(GRUB_ERR_BAD_OS, "failed to install/update FDT"); ++} ++ ++grub_err_t ++grub_arch_efi_linux_boot_image (grub_addr_t addr, grub_size_t size, char *args) ++{ ++ grub_efi_loaded_image_t *loaded_image = NULL; ++ grub_efi_memory_mapped_device_path_t *mempath; ++ grub_efi_handle_t image_handle; ++ grub_efi_boot_services_t *b; ++ grub_efi_status_t status; ++ int len; ++ ++ mempath = grub_malloc (2 * sizeof (grub_efi_memory_mapped_device_path_t)); ++ if (!mempath) ++ return grub_errno; ++ ++ mempath[0].header.type = GRUB_EFI_HARDWARE_DEVICE_PATH_TYPE; ++ mempath[0].header.subtype = GRUB_EFI_MEMORY_MAPPED_DEVICE_PATH_SUBTYPE; ++ mempath[0].header.length = grub_cpu_to_le16_compile_time (sizeof (*mempath)); ++ mempath[0].memory_type = GRUB_EFI_LOADER_DATA; ++ mempath[0].start_address = addr; ++ mempath[0].end_address = addr + size; ++ ++ mempath[1].header.type = GRUB_EFI_END_DEVICE_PATH_TYPE; ++ mempath[1].header.subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE; ++ mempath[1].header.length = sizeof (grub_efi_device_path_t); ++ ++ b = grub_efi_system_table->boot_services; ++ status = b->load_image (0, grub_efi_image_handle, ++ (grub_efi_device_path_t *) mempath, ++ (void *) addr, size, &image_handle); ++ if (status != GRUB_EFI_SUCCESS) ++ return grub_error (GRUB_ERR_BAD_OS, "cannot load image"); ++ ++ grub_dprintf ("linux", "linux command line: '%s'\n", args); ++ ++ /* Convert command line to UCS-2 */ ++ loaded_image = grub_efi_get_loaded_image (image_handle); ++ if (!loaded_image) ++ return grub_error(GRUB_ERR_BAD_OS, "cannot get image"); ++ loaded_image->load_options_size = len = ++ (grub_strlen (args) + 1) * sizeof (grub_efi_char16_t); ++ loaded_image->load_options = ++ grub_efi_allocate_any_pages (GRUB_EFI_BYTES_TO_PAGES ++(loaded_image->load_options_size)); ++ if (!loaded_image->load_options) ++ return grub_errno; ++ ++ loaded_image->load_options_size = ++ 2 * grub_utf8_to_utf16 (loaded_image->load_options, len, ++ (grub_uint8_t *) args, len, NULL); ++ ++ grub_dprintf ("linux", "starting image %p\n", image_handle); ++ status = b->start_image (image_handle, 0, NULL); ++ ++ /* When successful, not reached */ ++ b->unload_image (image_handle); ++ grub_efi_free_pages ((grub_addr_t) loaded_image->load_options, ++ GRUB_EFI_BYTES_TO_PAGES ++(loaded_image->load_options_size)); ++ ++ return grub_errno; ++} ++ ++static grub_err_t ++grub_linux_boot (void) ++{ ++ if (finalize_params_linux () != GRUB_ERR_NONE) ++ return grub_errno; ++ ++ return (grub_arch_efi_linux_boot_image((grub_addr_t)kernel_addr, ++ kernel_size, linux_args)); ++} ++ ++static grub_err_t ++grub_linux_unload (void) ++{ ++ grub_dl_unref (my_mod); ++ loaded = 0; ++ if (initrd_start) ++ grub_efi_free_pages ((grub_efi_physical_address_t) initrd_start, ++ GRUB_EFI_BYTES_TO_PAGES (initrd_end - initrd_start)); ++ initrd_start = initrd_end = 0; ++ grub_free (linux_args); ++ if (kernel_addr) ++ grub_efi_free_pages ((grub_addr_t) kernel_addr, ++ GRUB_EFI_BYTES_TO_PAGES (kernel_size)); ++ grub_fdt_unload (); ++ return GRUB_ERR_NONE; ++} ++ ++/* According to the Linux arch/riscv/include/asm/efi.h */ ++#define INITRD_MAX_ADDRESS_OFFSET (256ULL << 20) ++ ++/* ++ * This function returns a pointer to a legally allocated initrd buffer, ++ * or NULL if unsuccessful ++ */ ++static void * ++allocate_initrd_mem (int initrd_pages) ++{ ++ grub_addr_t max_addr; ++ ++ if (grub_efi_get_ram_base (&max_addr) != GRUB_ERR_NONE) ++ return NULL; ++ ++ max_addr += INITRD_MAX_ADDRESS_OFFSET - 1; ++ ++ return grub_efi_allocate_pages_real (max_addr, initrd_pages, ++ GRUB_EFI_ALLOCATE_MAX_ADDRESS, ++ GRUB_EFI_LOADER_DATA); ++} ++ ++static grub_err_t ++grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)), ++ int argc, char *argv[]) ++{ ++ struct grub_linux_initrd_context initrd_ctx = { 0, 0, 0 }; ++ int initrd_size, initrd_pages; ++ void *initrd_mem = NULL; ++ ++ if (argc == 0) ++ { ++ grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); ++ goto fail; ++ } ++ ++ if (!loaded) ++ { ++ grub_error (GRUB_ERR_BAD_ARGUMENT, ++ N_("you need to load the kernel first")); ++ goto fail; ++ } ++ ++ if (grub_initrd_init (argc, argv, &initrd_ctx)) ++ goto fail; ++ ++ initrd_size = grub_get_initrd_size (&initrd_ctx); ++ grub_dprintf ("linux", "Loading initrd\n"); ++ ++ initrd_pages = (GRUB_EFI_BYTES_TO_PAGES (initrd_size)); ++ initrd_mem = allocate_initrd_mem (initrd_pages); ++ ++ if (!initrd_mem) ++ { ++ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory")); ++ goto fail; ++ } ++ ++ if (grub_initrd_load (&initrd_ctx, argv, initrd_mem)) ++ goto fail; ++ ++ initrd_start = (grub_addr_t) initrd_mem; ++ initrd_end = initrd_start + initrd_size; ++ grub_dprintf ("linux", "[addr=%p, size=0x%x]\n", ++ (void *) initrd_start, initrd_size); ++ ++fail: ++ grub_initrd_close (&initrd_ctx); ++ if (initrd_mem && !initrd_start) ++ grub_efi_free_pages ((grub_addr_t) initrd_mem, initrd_pages); ++ ++ return grub_errno; ++} ++ ++static grub_err_t ++grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)), ++ int argc, char *argv[]) ++{ ++ grub_file_t file = 0; ++ struct linux_arch_kernel_header lh; ++ grub_err_t err; ++ ++ grub_dl_ref (my_mod); ++ ++ if (argc == 0) ++ { ++ grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); ++ goto fail; ++ } ++ ++ file = grub_file_open (argv[0], GRUB_FILE_TYPE_LINUX_KERNEL); ++ if (!file) ++ goto fail; ++ ++ kernel_size = grub_file_size (file); ++ ++ if (grub_file_read (file, &lh, sizeof (lh)) < (long) sizeof (lh)) ++ return grub_errno; ++ ++ if (grub_arch_efi_linux_check_image (&lh) != GRUB_ERR_NONE) ++ goto fail; ++ ++ grub_loader_unset(); ++ ++ grub_dprintf ("linux", "kernel file size: %lld\n", (long long) kernel_size); ++ kernel_addr = grub_efi_allocate_any_pages (GRUB_EFI_BYTES_TO_PAGES ++(kernel_size)); ++ grub_dprintf ("linux", "kernel numpages: %lld\n", ++ (long long) GRUB_EFI_BYTES_TO_PAGES (kernel_size)); ++ if (!kernel_addr) ++ { ++ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory")); ++ goto fail; ++ } ++ ++ grub_file_seek (file, 0); ++ if (grub_file_read (file, kernel_addr, kernel_size) ++ < (grub_int64_t) kernel_size) ++ { ++ if (!grub_errno) ++ grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), argv[0]); ++ goto fail; ++ } ++ ++ grub_dprintf ("linux", "kernel @ %p\n", kernel_addr); ++ ++ cmdline_size = grub_loader_cmdline_size (argc, argv) + sizeof (LINUX_IMAGE); ++ linux_args = grub_malloc (cmdline_size); ++ if (!linux_args) ++ { ++ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory")); ++ goto fail; ++ } ++ grub_memcpy (linux_args, LINUX_IMAGE, sizeof (LINUX_IMAGE)); ++ err = grub_create_loader_cmdline (argc, argv, ++ linux_args + sizeof (LINUX_IMAGE) - 1, ++ cmdline_size, ++ GRUB_VERIFY_KERNEL_CMDLINE); ++ if (err) ++ goto fail; ++ ++ if (grub_errno == GRUB_ERR_NONE) ++ { ++ grub_loader_set (grub_linux_boot, grub_linux_unload, 0); ++ loaded = 1; ++ } ++ ++fail: ++ if (file) ++ grub_file_close (file); ++ ++ if (grub_errno != GRUB_ERR_NONE) ++ { ++ grub_dl_unref (my_mod); ++ loaded = 0; ++ } ++ ++ if (linux_args && !loaded) ++ grub_free (linux_args); ++ ++ if (kernel_addr && !loaded) ++ grub_efi_free_pages ((grub_addr_t) kernel_addr, ++ GRUB_EFI_BYTES_TO_PAGES (kernel_size)); ++ ++ return grub_errno; ++} ++ ++static grub_command_t cmd_linux, cmd_initrd; ++ ++GRUB_MOD_INIT (linux) ++{ ++ cmd_linux = grub_register_command ("linux", grub_cmd_linux, 0, ++ N_("Load Linux.")); ++ cmd_initrd = grub_register_command ("initrd", grub_cmd_initrd, 0, ++ N_("Load initrd.")); ++ my_mod = mod; ++} ++ ++GRUB_MOD_FINI (linux) ++{ ++ grub_unregister_command (cmd_linux); ++ grub_unregister_command (cmd_initrd); ++} +-- +1.8.3.1 + diff --git a/0355-keep-riscv-linux-boot-args.patch b/0355-keep-riscv-linux-boot-args.patch new file mode 100644 index 0000000000000000000000000000000000000000..ff0eedb287f0d007839a2f382e6542cf45396685 --- /dev/null +++ b/0355-keep-riscv-linux-boot-args.patch @@ -0,0 +1,29 @@ +From: GuEe_GUI <2991707448@qq.com> +Subject: RISC-V: keep the args of grub_arch_efi_linux_boot_image +Date: Sun, 9 May 2021 12:05:46 +0800 + +Keep the riscv loader function grub_arch_efi_linux_boot_image '__riscv' between '__arm__' and '__aarch64__' +--- + include/grub/efi/efi.h | 5 +++++ + 1 files changed, 5 insertions(+), 0 deletions(-) + +diff --git a/include/grub/efi/efi.h b/include/grub/efi/efi.h +index 83d958f99..54924940a 100644 +--- a/include/grub/efi/efi.h ++++ b/include/grub/efi/efi.h +@@ -134,8 +134,13 @@ void *EXPORT_FUNC(grub_efi_get_firmware_fdt)(void); + grub_err_t EXPORT_FUNC(grub_efi_get_ram_base)(grub_addr_t *); + #include + grub_err_t grub_arch_efi_linux_check_image(struct linux_arch_kernel_header *lh); ++#ifdef __riscv ++grub_err_t grub_arch_efi_linux_boot_image(grub_addr_t addr, grub_size_t size, ++ char *args); ++#else + grub_err_t grub_arch_efi_linux_boot_image(grub_addr_t addr, char *args); + #endif ++#endif + + grub_addr_t grub_efi_section_addr (const char *section); + +-- +1.8.3.1 diff --git a/99-grub-mkconfig.install b/99-grub-mkconfig.install old mode 100755 new mode 100644 diff --git a/grub.macros b/grub.macros index ac2efa3608c1e08d35322b247f8e089324ab2576..c77cef4fabe1c22f6a97b66daa1ae4fd25a33bc0 100644 --- a/grub.macros +++ b/grub.macros @@ -95,7 +95,7 @@ %endif -%global efi_only aarch64 %{arm} +%global efi_only aarch64 %{arm} riscv64 %global efi_arch x86_64 ia64 %{efi_only} %ifarch %{efi_arch} %global with_efi_arch 1 @@ -116,8 +116,12 @@ %ifarch aarch64 %{arm} %global efi_modules " " %else +%ifarch riscv64 +%global efi_modules " chain " +%else %global efi_modules " backtrace chain usb usbserial_common usbserial_pl2303 usbserial_ftdi usbserial_usbdebug " %endif +%endif %ifarch aarch64 %{arm} %global legacy_provides -l @@ -180,6 +184,14 @@ )} %endif +%ifarch riscv64 +%global efiarch riscv64 +%global target_cpu_name riscv64 +%global grub_target_name riscv64-efi +%global package_arch efi-riscv64 +%global with_emu_arch 0 +%endif + %global _target_platform %{target_cpu_name}-%{_vendor}-%{_target_os}%{?_gnu} %global _alt_target_platform %{alt_target_cpu_name}-%{_vendor}-%{_target_os}%{?_gnu} diff --git a/grub.patches b/grub.patches index 176fb5e8993442ea271ba8bdd3c3e549f0e74fa9..5ac833b389a9bef0ba52d3998f04c2ef02f7e9c1 100644 --- a/grub.patches +++ b/grub.patches @@ -217,7 +217,7 @@ Patch0216: 0216-fix-build-with-rpm-4.16.patch Patch0217: 0217-Only-mark-GRUB-as-BLS-supported-in-OSTree-systems-wi.patch Patch0218: 0218-support-TPM2.0-in-grub2-both-legacy-and-efi.patch Patch0219: 0219-Workaround-for-EFI-Bug-Plan3.patch -Patch0220: 0220-bugfix-remove-excess-qutos.patch +Patch0220: 0220-bugfix-remove-excess-qutos.patch Patch0221: 0221-yylex-Make-lexer-fatal-errors-actually-be-fatal.patch Patch0222: 0222-safemath-Add-some-arithmetic-primitives-that-check-f.patch Patch0223: 0223-calloc-Make-sure-we-always-have-an-overflow-checking.patch @@ -351,3 +351,5 @@ Patch0350: backport-0077-efi-tpm-Fix-memory-leak-in-grub_tpm1-2_log_event.patch Patch0351: backport-0078-powerpc-mkimage-Fix-CHRP-note-descsz.patch Patch0352: backport-0079-efi-tpm-Fix-typo-in-grub_efi_tpm2_protocol-struct.patch Patch0353: backport-0080-misc-Add-parentheses-around-ALIGN_UP-and-ALIGN_DOWN-.patch +Patch0354: 0354-add-riscv-linux-boot-support.patch +Patch0355: 0355-keep-riscv-linux-boot-args.patch diff --git a/grub2.spec b/grub2.spec index ebb00a7a0a772907bf409534a447811891bc40ed..2419dfd394f65401c2b3cd43dd43914739ed4203 100644 --- a/grub2.spec +++ b/grub2.spec @@ -8,7 +8,7 @@ Name: grub2 Epoch: 1 Version: 2.04 -Release: 16 +Release: 17 Summary: Bootloader with support for Linux, Multiboot and more License: GPLv3+ URL: http://www.gnu.org/software/grub/