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[106.187.50.65]) by smtp.googlemail.com with ESMTPSA id ti10sm6364677pab.20.2015.07.22.22.17.15 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 22 Jul 2015 22:17:19 -0700 (PDT) From: fu.wei@linaro.org To: grub-devel@gnu.org, arvidjaar@gmail.com, phcoder@gmail.com Subject: [PATCH v3 2/4] arm64: Add xen_boot module file Date: Thu, 23 Jul 2015 13:16:21 +0800 Message-Id: <1437628583-23667-3-git-send-email-fu.wei@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1437628583-23667-1-git-send-email-fu.wei@linaro.org> References: <=fu.wei@linaro.org> <1437628583-23667-1-git-send-email-fu.wei@linaro.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.220.42 Cc: xen-devel@lists.xensource.com, Ian.Campbell@citrix.com, stefano.stabellini@eu.citrix.com, jcm@redhat.com, leif.lindholm@linaro.org, ryan.harkin@linaro.org, linaro-uefi@lists.linaro.org, Fu Wei X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: The development of GNU GRUB List-Id: List-Unsubscribe: , List-Archive: List-Post: , List-Help: , List-Subscribe: , MIME-Version: 1.0 Errors-To: grub-devel-bounces+patch=linaro.org@gnu.org Sender: grub-devel-bounces+patch=linaro.org@gnu.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: fu.wei@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.215.54 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 From: Fu Wei 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 --- 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 . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include /* required by struct xen_hypervisor_header */ +#include +#include + +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 + 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); +}