Committed without the xen_module command. Its argument parsing was non-trivial and I don't quite get what its intent is. Can you resubmit? On 23.07.2015 07:16, fu....@linaro.org wrote: > From: Fu Wei <fu....@linaro.org> > > grub-core/loader/arm64/xen_boot.c > > - This adds support for the Xen boot on ARM specification for arm64. > - Introduce xen_hypervisor, xen_linux, xen_initrd and xen_xsm > to load different binaries for xen boot; > Introduce xen_module to load common or custom module for xen boot. > - This Xen boot support is a separated module for aarch64, > but reuse the existing code of devicetree in linux module. > > Signed-off-by: Fu Wei <fu....@linaro.org> > --- > grub-core/Makefile.core.def | 7 + > grub-core/loader/arm64/xen_boot.c | 685 > ++++++++++++++++++++++++++++++++++++++ > 2 files changed, 692 insertions(+) > > diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def > index a6101de..796f7e9 100644 > --- a/grub-core/Makefile.core.def > +++ b/grub-core/Makefile.core.def > @@ -1648,6 +1648,13 @@ module = { > }; > > module = { > + name = xen_boot; > + common = lib/cmdline.c; > + arm64 = loader/arm64/xen_boot.c; > + enable = arm64; > +}; > + > +module = { > name = linux; > x86 = loader/i386/linux.c; > xen = loader/i386/xen.c; > diff --git a/grub-core/loader/arm64/xen_boot.c > b/grub-core/loader/arm64/xen_boot.c > new file mode 100644 > index 0000000..33a65dd > --- /dev/null > +++ b/grub-core/loader/arm64/xen_boot.c > @@ -0,0 +1,685 @@ > +/* > + * GRUB -- GRand Unified Bootloader > + * Copyright (C) 2014 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 <http://www.gnu.org/licenses/>. > + */ > + > +#include <grub/cache.h> > +#include <grub/charset.h> > +#include <grub/command.h> > +#include <grub/err.h> > +#include <grub/file.h> > +#include <grub/fdt.h> > +#include <grub/linux.h> > +#include <grub/list.h> > +#include <grub/loader.h> > +#include <grub/misc.h> > +#include <grub/mm.h> > +#include <grub/types.h> > +#include <grub/cpu/linux.h> > +#include <grub/efi/efi.h> > +#include <grub/efi/pe32.h> /* required by struct xen_hypervisor_header */ > +#include <grub/i18n.h> > +#include <grub/lib/cmdline.h> > + > +GRUB_MOD_LICENSE ("GPLv3+"); > + > +#define XEN_HYPERVISOR_NAME "xen_hypervisor" > + > +#define MODULE_DEFAULT_ALIGN (0x0) > +#define MODULE_IMAGE_MIN_ALIGN MODULE_DEFAULT_ALIGN > +#define MODULE_INITRD_MIN_ALIGN MODULE_DEFAULT_ALIGN > +#define MODULE_XSM_MIN_ALIGN MODULE_DEFAULT_ALIGN > +#define MODULE_CUSTOM_MIN_ALIGN MODULE_DEFAULT_ALIGN > + > +/* #define MODULE_IMAGE_COMPATIBLE "xen,linux-image\0xen,module" > +#define MODULE_INITRD_COMPATIBLE "xen,linux-image\0xen,module" > +#define MODULE_XSM_COMPATIBLE "xen,xsm-policy\0xen,module" > +#define MODULE_CUSTOM_COMPATIBLE "xen,module" */ > +#define MODULE_IMAGE_COMPATIBLE "multiboot,kernel\0multiboot,module" > +#define MODULE_INITRD_COMPATIBLE "multiboot,ramdisk\0multiboot,module" > +#define MODULE_XSM_COMPATIBLE "xen,xsm-policy\0multiboot,module" > +#define MODULE_CUSTOM_COMPATIBLE "multiboot,module" > + > +/* This maximum size is defined in Power.org ePAPR V1.1 > + * https://www.power.org/documentation/epapr-version-1-1/ > + * 2.2.1.1 Node Name Requirements > + * node-name@unit-address > + * 31 + 1(@) + 16(64bit address in hex format) + 1(\0) = 49 > + */ > +#define FDT_NODE_NAME_MAX_SIZE (49) > + > +#define ARG_SHIFT(argc, argv) \ > + do { \ > + (argc)--; \ > + (argv)++; \ > + } while (0) > + > +struct compat_string_struct > +{ > + grub_size_t size; > + const char *compat_string; > +}; > +typedef struct compat_string_struct compat_string_struct_t; > +#define FDT_COMPATIBLE(x) {.size = sizeof(x), .compat_string = (x)} > + > +enum module_type > +{ > + MODULE_IMAGE, > + MODULE_INITRD, > + MODULE_XSM, > + MODULE_CUSTOM > +}; > +typedef enum module_type module_type_t; > + > +struct fdt_node_info > +{ > + module_type_t type; > + > + const char *compat_string; > + grub_size_t compat_string_size; > +}; > + > +struct xen_hypervisor_header > +{ > + struct grub_arm64_linux_kernel_header efi_head; > + > + /* This is always PE\0\0. */ > + grub_uint8_t signature[GRUB_PE32_SIGNATURE_SIZE]; > + /* The COFF file header. */ > + struct grub_pe32_coff_header coff_header; > + /* The Optional header. */ > + struct grub_pe64_optional_header optional_header; > +}; > + > +struct xen_boot_binary > +{ > + struct xen_boot_binary *next; > + struct xen_boot_binary **prev; > + const char *name; > + > + grub_addr_t start; > + grub_size_t size; > + grub_size_t align; > + > + char *cmdline; > + int cmdline_size; > + > + struct fdt_node_info node_info; > +}; > + > +static grub_dl_t my_mod; > + > +static struct xen_boot_binary *xen_hypervisor; > +static struct xen_boot_binary *module_head; > +static const grub_size_t module_default_align[] = { > + MODULE_IMAGE_MIN_ALIGN, > + MODULE_INITRD_MIN_ALIGN, > + MODULE_XSM_MIN_ALIGN, > + MODULE_CUSTOM_MIN_ALIGN > +}; > + > +static void *xen_boot_fdt; > +static const compat_string_struct_t default_compat_string[] = { > + FDT_COMPATIBLE (MODULE_IMAGE_COMPATIBLE), > + FDT_COMPATIBLE (MODULE_INITRD_COMPATIBLE), > + FDT_COMPATIBLE (MODULE_XSM_COMPATIBLE), > + FDT_COMPATIBLE (MODULE_CUSTOM_COMPATIBLE) > +}; > + > +static __inline grub_addr_t > +xen_boot_address_align (grub_addr_t start, grub_size_t align) > +{ > + return (align ? (ALIGN_UP (start, align)) : start); > +} > + > +/* Parse the option of xen_module command. For now, we support > + (1) --type <the compatible stream> > + We also set up the type of module in this function. > + If there are some "--type" options in the command line, > + we make a custom compatible stream in this function. */ > +static grub_err_t > +set_module_type (grub_command_t cmd, struct xen_boot_binary *module, > + int argc, char *argv[], int *file_name_index) > +{ > + char **compat_string_temp_array; > + grub_size_t total_size = 0; > + int num_types = 0, i; > + char *temp = NULL; > + > + *file_name_index = 0; > + > + if (!grub_strcmp (cmd->name, "xen_linux")) > + module->node_info.type = MODULE_IMAGE; > + else if (!grub_strcmp (cmd->name, "xen_initrd")) > + module->node_info.type = MODULE_INITRD; > + else if (!grub_strcmp (cmd->name, "xen_xsm")) > + module->node_info.type = MODULE_XSM; > + else if (!grub_strcmp (cmd->name, "xen_module")) > + module->node_info.type = MODULE_CUSTOM; > + > + /* if there are some options we need to process. */ > + if (module->node_info.type == MODULE_CUSTOM) > + { > + compat_string_temp_array = > + (char **) grub_zalloc (sizeof (char *) * argc); > + if (!compat_string_temp_array) > + return grub_errno; > + /* the module type is set by "--type"(MODULE_CUSTOM) */ > + while (argc > 2 && !grub_strcmp (argv[0], "--type")) > + { > + module->node_info.type = MODULE_CUSTOM; > + ARG_SHIFT (argc, argv); > + total_size += grub_strlen (argv[0]) + 1; > + compat_string_temp_array[num_types++] = argv[0]; > + ARG_SHIFT (argc, argv); > + (*file_name_index) += 2; > + } > + > + if (total_size) > + { > + module->node_info.compat_string = temp = > + (char *) grub_zalloc (total_size); > + if (!temp) > + { > + grub_free (compat_string_temp_array); > + return grub_errno; > + } > + > + module->node_info.compat_string_size = total_size; > + for (i = 0; num_types > 0; num_types--, i++, temp++) > + { > + grub_strcpy (temp, compat_string_temp_array[i]); > + temp += grub_strlen (compat_string_temp_array[i]); > + } > + } > + else > + { > + module->node_info.compat_string = > + default_compat_string[MODULE_CUSTOM].compat_string; > + module->node_info.compat_string_size = > + default_compat_string[MODULE_CUSTOM].size; > + } > + > + grub_free (compat_string_temp_array); > + } > + > + return GRUB_ERR_NONE; > +} > + > +static grub_err_t > +prepare_xen_hypervisor_params (void) > +{ > + int chosen_node = 0; > + int retval; > + > + xen_boot_fdt = grub_linux_get_fdt (); > + if (!xen_boot_fdt) > + return grub_error (GRUB_ERR_IO, "failed to get FDT"); > + > + chosen_node = grub_fdt_find_subnode (xen_boot_fdt, 0, "chosen"); > + if (chosen_node < 0) > + chosen_node = grub_fdt_add_subnode (xen_boot_fdt, 0, "chosen"); > + if (chosen_node < 1) > + return grub_error (GRUB_ERR_IO, "failed to get chosen node in FDT"); > + > + grub_dprintf ("xen_loader", > + "Xen Hypervisor cmdline : %s @ %p size:%d\n", > + xen_hypervisor->cmdline, xen_hypervisor->cmdline, > + xen_hypervisor->cmdline_size); > + > + retval = grub_fdt_set_prop (xen_boot_fdt, chosen_node, "bootargs", > + xen_hypervisor->cmdline, > + xen_hypervisor->cmdline_size); > + if (retval) > + return grub_error (GRUB_ERR_IO, "failed to install/update FDT"); > + > + return GRUB_ERR_NONE; > +} > + > +static grub_err_t > +prepare_xen_module_params (struct xen_boot_binary *module) > +{ > + int retval, chosen_node = 0, module_node = 0; > + char module_name[FDT_NODE_NAME_MAX_SIZE]; > + > + retval = grub_snprintf (module_name, FDT_NODE_NAME_MAX_SIZE, "module@%lx", > + xen_boot_address_align (module->start, > + module->align)); > + grub_dprintf ("xen_loader", "Module node name %s \n", module_name); > + > + if (retval < (int) sizeof ("module@")) > + return grub_error (GRUB_ERR_IO, N_("failed to get FDT")); > + > + chosen_node = grub_fdt_find_subnode (xen_boot_fdt, 0, "chosen"); > + if (chosen_node < 0) > + chosen_node = grub_fdt_add_subnode (xen_boot_fdt, 0, "chosen"); > + if (chosen_node < 1) > + return grub_error (GRUB_ERR_IO, "failed to get chosen node in FDT"); > + > + module_node = > + grub_fdt_find_subnode (xen_boot_fdt, chosen_node, module_name); > + if (module_node < 0) > + module_node = > + grub_fdt_add_subnode (xen_boot_fdt, chosen_node, module_name); > + > + retval = grub_fdt_set_prop (xen_boot_fdt, module_node, "compatible", > + module->node_info.compat_string, > + (grub_uint32_t) module-> > + node_info.compat_string_size); > + if (retval) > + return grub_error (GRUB_ERR_IO, N_("failed to update FDT")); > + > + grub_dprintf ("xen_loader", "Module %s compatible = %s size = 0x%lx\n", > + module->name, module->node_info.compat_string, > + module->node_info.compat_string_size); > + > + retval = grub_fdt_set_reg64 (xen_boot_fdt, module_node, > + xen_boot_address_align (module->start, > + module->align), > + module->size); > + if (retval) > + return grub_error (GRUB_ERR_IO, N_("failed to update FDT")); > + > + if (module->cmdline && module->cmdline_size > 0) > + { > + grub_dprintf ("xen_loader", > + "Module %s cmdline : %s @ %p size:%d\n", module->name, > + module->cmdline, module->cmdline, module->cmdline_size); > + > + retval = grub_fdt_set_prop (xen_boot_fdt, module_node, "bootargs", > + module->cmdline, module->cmdline_size + 1); > + if (retval) > + return grub_error (GRUB_ERR_IO, "failed to update FDT"); > + } > + else > + { > + grub_dprintf ("xen_loader", "Module %s has not bootargs!\n", > + module->name); > + } > + > + return GRUB_ERR_NONE; > +} > + > +static grub_err_t > +install_all_params (void) > +{ > + grub_efi_guid_t fdt_guid = GRUB_EFI_DEVICE_TREE_GUID; > + grub_efi_boot_services_t *b; > + grub_efi_status_t status; > + > + b = grub_efi_system_table->boot_services; > + status = b->install_configuration_table (&fdt_guid, xen_boot_fdt); > + if (status != GRUB_EFI_SUCCESS) > + return grub_error (GRUB_ERR_IO, "failed to install FDT"); > + > + grub_dprintf ("xen_loader", > + "Installed/updated FDT configuration table @ %p\n", > + xen_boot_fdt); > + > + return GRUB_ERR_NONE; > +} > + > +static grub_err_t > +clean_all_params (void) > +{ > + if (xen_boot_fdt) > + { > + grub_efi_free_pages ((grub_efi_physical_address_t) xen_boot_fdt, > + BYTES_TO_PAGES (grub_fdt_get_totalsize > + (xen_boot_fdt))); > + xen_boot_fdt = NULL; > + } > + > + return GRUB_ERR_NONE; > +} > + > +static grub_err_t > +finalize_params_xen_boot (void) > +{ > + struct xen_boot_binary *module; > + > + if (xen_hypervisor) > + { > + if (prepare_xen_hypervisor_params () != GRUB_ERR_NONE) > + goto fail; > + } > + else > + { > + grub_dprintf ("xen_loader", "Failed to get Xen Hypervisor info!\n"); > + goto fail; > + } > + > + /* Set module params info */ > + FOR_LIST_ELEMENTS (module, module_head) > + { > + if (module->start && module->size > 0) > + { > + grub_dprintf ("xen_loader", "Module %s @ 0x%lx size:0x%lx\n", > + module->name, > + xen_boot_address_align (module->start, module->align), > + module->size); > + if (prepare_xen_module_params (module) != GRUB_ERR_NONE) > + goto fail; > + } > + else > + { > + grub_dprintf ("xen_loader", "Module info error: %s!\n", module->name); > + goto fail; > + } > + } > + > + if (install_all_params () == GRUB_ERR_NONE) > + return GRUB_ERR_NONE; > + > +fail: > + clean_all_params (); > + > + return grub_error (GRUB_ERR_IO, "failed to install/update FDT"); > +} > + > + > +static grub_err_t > +xen_boot (void) > +{ > + grub_err_t err = finalize_params_xen_boot (); > + if (err) > + return err; > + > + return grub_arm64_uefi_boot_image (xen_hypervisor->start, > + xen_hypervisor->size, > + xen_hypervisor->cmdline); > +} > + > +static void > +single_binary_unload (struct xen_boot_binary *binary) > +{ > + if (!binary) > + return; > + > + if (binary->start && binary->size > 0) > + { > + grub_efi_free_pages ((grub_efi_physical_address_t) binary->start, > + BYTES_TO_PAGES (binary->size + binary->align)); > + } > + > + if (binary->cmdline && binary->cmdline_size > 0) > + { > + grub_free (binary->cmdline); > + grub_dprintf ("xen_loader", > + "Module %s cmdline memory free @ %p size: %d\n", > + binary->name, binary->cmdline, binary->cmdline_size); > + } > + > + if (binary->node_info.type == MODULE_CUSTOM) > + grub_free ((void *) binary->node_info.compat_string); > + > + if (grub_strcmp (binary->name, XEN_HYPERVISOR_NAME)) > + grub_list_remove (GRUB_AS_LIST (binary)); > + > + grub_dprintf ("xen_loader", > + "Module %s struct memory free @ %p size: 0x%lx\n", > + binary->name, binary, sizeof (binary)); > + grub_free (binary); > + > + return; > +} > + > +static void > +all_binaries_unload (void) > +{ > + struct xen_boot_binary *binary; > + > + FOR_LIST_ELEMENTS (binary, module_head) > + { > + single_binary_unload (binary); > + } > + > + if (xen_hypervisor) > + single_binary_unload (xen_hypervisor); > + > + return; > +} > + > +static grub_err_t > +xen_unload (void) > +{ > + grub_linux_set_loaded (0); > + all_binaries_unload (); > + clean_all_params (); > + grub_dl_unref (my_mod); > + > + return GRUB_ERR_NONE; > +} > + > +static void > +xen_boot_binary_load (struct xen_boot_binary *binary, grub_file_t file, > + int argc, char *argv[]) > +{ > + binary->size = grub_file_size (file); > + grub_dprintf ("xen_loader", "Xen_boot %s file size: 0x%lx\n", > + binary->name, binary->size); > + > + binary->start = (grub_addr_t) grub_efi_allocate_pages (0, > + (BYTES_TO_PAGES > + (binary->size + > + binary->align))); > + if (!binary->start) > + { > + grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory")); > + return; > + } > + > + grub_dprintf ("xen_loader", "Xen_boot %s numpages: 0x%lx\n", > + binary->name, BYTES_TO_PAGES (binary->size + binary->align)); > + > + if (grub_file_read (file, (void *) xen_boot_address_align (binary->start, > + binary->align), > + binary->size) != (grub_ssize_t) binary->size) > + { > + single_binary_unload (binary); > + grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), argv[0]); > + return; > + } > + > + if (argc > 1) > + { > + binary->cmdline_size = grub_loader_cmdline_size (argc - 1, argv + 1); > + binary->cmdline = grub_zalloc (binary->cmdline_size); > + if (!binary->cmdline) > + { > + single_binary_unload (binary); > + grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory")); > + return; > + } > + grub_create_loader_cmdline (argc - 1, argv + 1, binary->cmdline, > + binary->cmdline_size); > + grub_dprintf ("xen_loader", > + "Xen_boot %s cmdline @ %p %s, size: %d\n", binary->name, > + binary->cmdline, binary->cmdline, binary->cmdline_size); > + } > + else > + { > + binary->cmdline_size = 0; > + binary->cmdline = NULL; > + } > + > + grub_errno = GRUB_ERR_NONE; > + return; > +} > + > +static grub_err_t > +grub_cmd_xen_module (grub_command_t cmd, int argc, char *argv[]) > +{ > + > + struct xen_boot_binary *module = NULL; > + int file_name_index = 0; > + grub_file_t file = 0; > + > + if (!argc) > + { > + grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); > + goto fail; > + } > + > + if (!grub_linux_get_loaded ()) > + { > + grub_error (GRUB_ERR_BAD_ARGUMENT, > + N_("you need to load the Xen Hypervisor first")); > + goto fail; > + } > + > + module = > + (struct xen_boot_binary *) grub_zalloc (sizeof (struct xen_boot_binary)); > + if (!module) > + return grub_errno; > + > + /* process all the options and get module type */ > + if (set_module_type (cmd, module, argc, argv, &file_name_index) != > + GRUB_ERR_NONE) > + goto fail; > + switch (module->node_info.type) > + { > + case MODULE_IMAGE: > + case MODULE_INITRD: > + case MODULE_XSM: > + module->node_info.compat_string = > + default_compat_string[module->node_info.type].compat_string; > + module->node_info.compat_string_size = > + default_compat_string[module->node_info.type].size; > + break; > + > + case MODULE_CUSTOM: > + /* we have set the node_info in set_module_type */ > + break; > + > + default: > + return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("invalid argument")); > + } > + module->name = module->node_info.compat_string; > + module->align = module_default_align[module->node_info.type]; > + > + grub_dprintf ("xen_loader", "Init %s module and node info:\n" > + "compatible %s\ncompat_string_size 0x%lx\n", > + module->name, module->node_info.compat_string, > + module->node_info.compat_string_size); > + > + file = grub_file_open (argv[file_name_index]); > + if (!file) > + goto fail; > + > + xen_boot_binary_load (module, file, argc - file_name_index, > + argv + file_name_index); > + if (grub_errno == GRUB_ERR_NONE) > + grub_list_push (GRUB_AS_LIST_P (&module_head), GRUB_AS_LIST (module)); > + > +fail: > + if (file) > + grub_file_close (file); > + if (grub_errno != GRUB_ERR_NONE) > + single_binary_unload (module); > + > + return grub_errno; > +} > + > +static grub_err_t > +grub_cmd_xen_hypervisor (grub_command_t cmd __attribute__ ((unused)), > + int argc, char *argv[]) > +{ > + struct xen_hypervisor_header sh; > + grub_file_t file = NULL; > + > + grub_dl_ref (my_mod); > + > + if (!argc) > + { > + grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); > + goto fail; > + } > + > + file = grub_file_open (argv[0]); > + if (!file) > + goto fail; > + > + if (grub_file_read (file, &sh, sizeof (sh)) != (long) sizeof (sh)) > + goto fail; > + if (grub_arm64_uefi_check_image > + ((struct grub_arm64_linux_kernel_header *) &sh) != GRUB_ERR_NONE) > + goto fail; > + grub_file_seek (file, 0); > + > + /* if another module has called grub_loader_set, > + we need to make sure that another module is unloaded properly */ > + grub_loader_unset (); > + > + xen_hypervisor = > + (struct xen_boot_binary *) grub_zalloc (sizeof (struct xen_boot_binary)); > + if (!xen_hypervisor) > + return grub_errno; > + > + xen_hypervisor->name = XEN_HYPERVISOR_NAME; > + xen_hypervisor->align = (grub_size_t) sh.optional_header.section_alignment; > + > + xen_boot_binary_load (xen_hypervisor, file, argc, argv); > + if (grub_errno == GRUB_ERR_NONE) > + { > + grub_loader_set (xen_boot, xen_unload, 0); > + grub_linux_set_loaded (1); > + } > + > +fail: > + if (file) > + grub_file_close (file); > + if (grub_errno != GRUB_ERR_NONE) > + { > + grub_linux_set_loaded (0); > + all_binaries_unload (); > + grub_dl_unref (my_mod); > + } > + > + return grub_errno; > +} > + > +static grub_command_t cmd_xen_hypervisor, cmd_xen_module; > +static grub_command_t cmd_xen_linux, cmd_xen_initrd, cmd_xen_xsm; > + > +GRUB_MOD_INIT (xen_boot) > +{ > + cmd_xen_hypervisor = > + grub_register_command ("xen_hypervisor", grub_cmd_xen_hypervisor, 0, > + N_("Load a xen hypervisor.")); > + cmd_xen_linux = > + grub_register_command ("xen_linux", grub_cmd_xen_module, 0, > + N_("Load a xen linux kernel for dom0.")); > + cmd_xen_initrd = > + grub_register_command ("xen_initrd", grub_cmd_xen_module, 0, > + N_("Load a xen initrd for dom0.")); > + cmd_xen_xsm = > + grub_register_command ("xen_xsm", grub_cmd_xen_module, 0, > + N_("Load a xen security module.")); > + cmd_xen_module = > + grub_register_command ("xen_module", grub_cmd_xen_module, 0, > + N_("Load a xen module.")); > + my_mod = mod; > +} > + > +GRUB_MOD_FINI (xen_boot) > +{ > + grub_unregister_command (cmd_xen_hypervisor); > + grub_unregister_command (cmd_xen_linux); > + grub_unregister_command (cmd_xen_initrd); > + grub_unregister_command (cmd_xen_xsm); > + grub_unregister_command (cmd_xen_module); > +} >
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