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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 1/3] arm64: Add Xen boot support file
From: Fu Wei <fu.wei@xxxxxxxxxx>
This patch adds Xen boot support file:
grub-core/loader/arm64/xen_boot.c
include/grub/arm64/xen_boot.h
This patch also adds commands register code and hearder file into
grub-core/loader/arm64/linux.c
- This adds support for the Xen boot on ARM specification for arm64.
- The implementation for Xen is following <Multiboot on ARM Specification>:
http://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/Multiboot
and xen/docs/misc/arm/device-tree/booting.txt in Xen source code.
- The multiboot/module commands have existed,
so we use xen_hypervisor/xen_module instead.
- This Xen boot support is built into linux module for aarch64.
- Adding this functionality to the existing "linux" module is for
reusing the existing code of devicetree.
Signed-off-by: Fu Wei <fu.wei@xxxxxxxxxx>
---
grub-core/Makefile.core.def | 1 +
grub-core/loader/arm64/linux.c | 6 +
grub-core/loader/arm64/xen_boot.c | 615 ++++++++++++++++++++++++++++++++++++++
include/grub/arm64/xen_boot.h | 115 +++++++
4 files changed, 737 insertions(+)
create mode 100644 grub-core/loader/arm64/xen_boot.c
create mode 100644 include/grub/arm64/xen_boot.h
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index a6101de..01f8261 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -1659,6 +1659,7 @@ module = {
ia64_efi = loader/ia64/efi/linux.c;
arm = loader/arm/linux.c;
arm64 = loader/arm64/linux.c;
+ arm64 = loader/arm64/xen_boot.c;
fdt = lib/fdt.c;
common = loader/linux.c;
common = lib/cmdline.c;
diff --git a/grub-core/loader/arm64/linux.c b/grub-core/loader/arm64/linux.c
index 987f5b9..7ae9bde 100644
--- a/grub-core/loader/arm64/linux.c
+++ b/grub-core/loader/arm64/linux.c
@@ -26,6 +26,7 @@
#include <grub/mm.h>
#include <grub/types.h>
#include <grub/cpu/linux.h>
+#include <grub/cpu/xen_boot.h>
#include <grub/efi/efi.h>
#include <grub/efi/pe32.h>
#include <grub/i18n.h>
@@ -477,6 +478,9 @@ GRUB_MOD_INIT (linux)
cmd_devicetree =
grub_register_command ("devicetree", grub_cmd_devicetree, 0,
N_("Load DTB file."));
+
+ grub_arm64_linux_register_xen_boot_command (mod, &loaded);
+
my_mod = mod;
}
@@ -485,4 +489,6 @@ GRUB_MOD_FINI (linux)
grub_unregister_command (cmd_linux);
grub_unregister_command (cmd_initrd);
grub_unregister_command (cmd_devicetree);
+
+ grub_arm64_linux_unregister_xen_boot_command ();
}
diff --git a/grub-core/loader/arm64/xen_boot.c
b/grub-core/loader/arm64/xen_boot.c
new file mode 100644
index 0000000..23bd00e
--- /dev/null
+++ b/grub-core/loader/arm64/xen_boot.c
@@ -0,0 +1,615 @@
+/*
+ * 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/cpu/xen_boot.h>
+#include <grub/efi/efi.h>
+#include <grub/efi/pe32.h>
+#include <grub/i18n.h>
+#include <grub/lib/cmdline.h>
+
+static grub_dl_t linux_mod;
+static int *loaded;
+
+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_OTHER_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_OTHER_COMPATIBLE)
+};
+
+
+/* Parse all the options of xen_module command. For now, we support
+ (1) --type <the compatible stream>
+ (2) --nounzip
+ 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 (struct xen_boot_binary *module, int argc, char *argv[],
+ int *file_name_index)
+{
+ char **compat_string_temp_array =
+ (char **) grub_zalloc (sizeof (char *) * argc);
+ static module_type_t default_type = MODULE_IMAGE;
+ grub_size_t total_size = 0;
+ int num_types = 0, i;
+ char *temp = NULL;
+
+ *file_name_index = 0;
+
+ /* if there are some options we need to process. */
+ while (argc > 1 && !grub_strncmp (argv[0], "--", 2))
+ {
+ if (!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;
+ }
+ else if (!grub_strcmp (argv[0], "--nounzip"))
+ {
+ grub_file_filter_disable_compression ();
+ ARG_SHIFT (argc, argv);
+ (*file_name_index) += 1;
+ }
+ else /* we can add more options process code here. */
+ {
+ grub_dprintf ("xen_boot_loader",
+ "Unknown option %s, skip.\n", argv[0]);
+ ARG_SHIFT (argc, argv);
+ (*file_name_index) += 1;
+ }
+ }
+
+ /* To prevent some wrong command lines using "--type" option */
+ if (!argc)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
+
+ /* For the default module type :
+ The implementation is following <Multiboot on ARM Specification>:
+ Each module will be given a default compatibility property
+ based on the order in which the modules are added.
+ The 1st module: compatible = "multiboot,kernel", "multiboot,module"
+ The 2nd module: compatible = "multiboot,ramdisk", "multiboot,module"
+ All subsequent modules: compatible = "multiboot,module"
+ But this order will NOT be interfered with "--type"(MODULE_CUSTOM)
+ For more detail, please refer to:
+ http://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/Multiboot
*/
+ if (module->node_info.type != MODULE_CUSTOM)
+ {
+ /* the module type is set by the load order */
+ module->node_info.type = default_type;
+ switch (default_type)
+ {
+ case MODULE_IMAGE:
+ default_type = MODULE_INITRD;
+ break;
+
+ case MODULE_INITRD:
+ default_type = MODULE_OTHER;
+ break;
+
+ case MODULE_OTHER:
+ break;
+
+ default:
+ default_type = MODULE_IMAGE; /* error, reset the type */
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("invalid argument"));
+ }
+ }
+ else
+ {
+ /* the module type is set by "--type"(MODULE_CUSTOM) */
+ module->node_info.compat_string = temp =
+ (char *) grub_zalloc (total_size);
+ 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]);
+ }
+ }
+
+ 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_BAD_OS, "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_BAD_OS, "failed to get chosen node in FDT");
+
+ grub_dprintf ("xen_boot_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_BAD_OS, "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_boot_loader", "Module node name %s \n", module_name);
+
+ if (retval < (int) sizeof ("module@"))
+ return grub_error (GRUB_ERR_BAD_OS, 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_BAD_OS, "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_BAD_OS, N_("failed to update FDT"));
+
+ grub_dprintf ("xen_boot_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_BAD_OS, N_("failed to update FDT"));
+
+ if (module->cmdline && module->cmdline_size > 0)
+ {
+ grub_dprintf ("xen_boot_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_BAD_OS, "failed to update FDT");
+ }
+ else
+ {
+ grub_dprintf ("xen_boot_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_BAD_OS, "failed to install FDT");
+
+ grub_dprintf ("xen_boot_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_boot_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_boot_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_boot_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_BAD_OS, "failed to install/update FDT");
+}
+
+
+static grub_err_t
+xen_boot (void)
+{
+ if (finalize_params_xen_boot () != GRUB_ERR_NONE)
+ return grub_errno;
+
+ 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 && 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 && binary->cmdline && binary->cmdline_size > 0)
+ {
+ grub_free (binary->cmdline);
+ grub_dprintf ("xen_boot_loader",
+ "Module %s cmdline memory free @ %p size: %d\n",
+ binary->name, binary->cmdline, binary->cmdline_size);
+ }
+
+ if (binary)
+ {
+ 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_boot_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)
+{
+ *loaded = 0;
+ all_binaries_unload ();
+ clean_all_params ();
+ grub_dl_unref (linux_mod);
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+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_boot_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)
+ return grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+
+ grub_dprintf ("xen_boot_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);
+ return grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
+ argv[0]);
+ }
+
+ /* Skip the xen_boot binary file name */
+ ARG_SHIFT (argc, argv);
+
+ if (argc > 0)
+ {
+ binary->cmdline_size = grub_loader_cmdline_size (argc, argv);
+ binary->cmdline = grub_zalloc (binary->cmdline_size);
+ if (!binary->cmdline)
+ {
+ single_binary_unload (binary);
+ return grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+ }
+ grub_create_loader_cmdline (argc, argv, binary->cmdline,
+ binary->cmdline_size);
+ grub_dprintf ("xen_boot_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;
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_cmd_xen_module (grub_command_t cmd __attribute__ ((unused)),
+ 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 (!*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_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+
+ /* process all the options and get module type */
+ if (set_module_type (module, argc, argv, &file_name_index) != GRUB_ERR_NONE)
+ goto fail;
+ switch (module->node_info.type)
+ {
+ case MODULE_IMAGE:
+ case MODULE_INITRD:
+ case MODULE_OTHER:
+ 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_boot_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;
+
+ grub_errno = 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 (linux_mod);
+
+ if (!argc)
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
+ goto fail;
+ }
+
+ /* For now, we don't support any option in xen_hypervisor command.
+ If there are some options, we skip them. */
+ while (argc > 1 && !grub_strncmp (argv[0], "--", 2))
+ {
+ grub_dprintf ("xen_boot_loader", "Unknown option %s, skip.\n", argv[0]);
+ ARG_SHIFT (argc, argv);
+ }
+
+ 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);
+
+ grub_loader_unset ();
+
+ xen_hypervisor =
+ (struct xen_boot_binary *) grub_zalloc (sizeof (struct xen_boot_binary));
+ if (!xen_hypervisor)
+ return grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+
+ xen_hypervisor->name = XEN_HYPERVISOR_NAME;
+ xen_hypervisor->align = (grub_size_t) sh.optional_header.section_alignment;
+
+ grub_errno = xen_boot_binary_load (xen_hypervisor, file, argc, argv);
+ if (grub_errno == GRUB_ERR_NONE)
+ {
+ grub_loader_set (xen_boot, xen_unload, 0);
+ *loaded = 1;
+ }
+
+fail:
+ if (file)
+ grub_file_close (file);
+ if (grub_errno != GRUB_ERR_NONE)
+ {
+ *loaded = 0;
+ all_binaries_unload ();
+ grub_dl_unref (linux_mod);
+ }
+
+ return grub_errno;
+}
+
+static grub_command_t cmd_xen_hypervisor, cmd_xen_module;
+
+void
+grub_arm64_linux_register_xen_boot_command (grub_dl_t mod, int *linux_loaded)
+{
+ cmd_xen_hypervisor =
+ grub_register_command ("xen_hypervisor", grub_cmd_xen_hypervisor, 0,
+ N_("Load a xen hypervisor."));
+ cmd_xen_module =
+ grub_register_command ("xen_module", grub_cmd_xen_module, 0,
+ N_("Load a xen module."));
+ linux_mod = mod;
+ loaded = linux_loaded;
+}
+
+void
+grub_arm64_linux_unregister_xen_boot_command (void)
+{
+ grub_unregister_command (cmd_xen_hypervisor);
+ grub_unregister_command (cmd_xen_module);
+}
diff --git a/include/grub/arm64/xen_boot.h b/include/grub/arm64/xen_boot.h
new file mode 100644
index 0000000..8e8f6cb
--- /dev/null
+++ b/include/grub/arm64/xen_boot.h
@@ -0,0 +1,115 @@
+/*
+ * xen_boot.h - Xen boot header file for Xen boot via FDT
+ * on AArch64 architecture.
+ * 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/>.
+ */
+
+#ifndef XEN_BOOT_HEADER
+#define XEN_BOOT_HEADER 1
+
+#include <grub/list.h>
+#include <grub/types.h>
+#include <grub/efi/pe32.h> /* required by struct xen_hypervisor_header */
+
+#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_OTHER_MIN_ALIGN MODULE_DEFAULT_ALIGN
+#define MODULE_CUSTOM_MIN_ALIGN MODULE_DEFAULT_ALIGN
+
+#define MODULE_IMAGE_COMPATIBLE "multiboot,kernel\0multiboot,module"
+#define MODULE_INITRD_COMPATIBLE "multiboot,ramdisk\0multiboot,module"
+#define MODULE_OTHER_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_OTHER,
+ 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;
+};
+
+void grub_arm64_linux_register_xen_boot_command (grub_dl_t mod, int *loaded);
+void grub_arm64_linux_unregister_xen_boot_command (void);
+
+static __inline grub_addr_t
+xen_boot_address_align (grub_addr_t start, grub_size_t align)
+{
+ return (align ? (ALIGN_UP (start, align)) : start);
+}
+
+#endif /* ! XEN_BOOT_HEADER */
--
1.8.3.1
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