Please, disregard this. It was accidentally sent and definitely has
issues. I'll be submitting this later when things are ironed out and
tested.
Glenn
On Mon, 14 Aug 2023 14:46:31 -0500
Glenn Washburn <developm...@efficientek.com> wrote:
> Signed-off-by: Glenn Washburn <developm...@efficientek.com>
> ---
> grub-core/Makefile.core.def | 6 +
> grub-core/commands/efi/efiload.c | 212 +++++++++++++++++++++++++++++++
> 2 files changed, 218 insertions(+)
> create mode 100644 grub-core/commands/efi/efiload.c
>
> diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
> index a6e6b8cb135a..8a50a0365314 100644
> --- a/grub-core/Makefile.core.def
> +++ b/grub-core/Makefile.core.def
> @@ -843,6 +843,12 @@ module = {
> enable = efi;
> };
>
> +module = {
> + name = efiload;
> + common = commands/efi/efiload.c;
> + enable = efi;
> +};
> +
> module = {
> name = blocklist;
> common = commands/blocklist.c;
> diff --git a/grub-core/commands/efi/efiload.c
> b/grub-core/commands/efi/efiload.c
> new file mode 100644
> index 000000000000..426ab24b6919
> --- /dev/null
> +++ b/grub-core/commands/efi/efiload.c
> @@ -0,0 +1,212 @@
> +/*
> + * GRUB -- GRand Unified Bootloader
> + * Copyright (C) 2019 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/dl.h>
> +#include <grub/efi/api.h>
> +#include <grub/efi/efi.h>
> +#include <grub/err.h>
> +#include <grub/extcmd.h>
> +#include <grub/file.h>
> +#include <grub/i18n.h>
> +#include <grub/misc.h>
> +#include <grub/mm.h>
> +#include <grub/types.h>
> +#include <grub/efi/efiload.h>
> +
> +GRUB_MOD_LICENSE ("GPLv3+");
> +
> +static const struct grub_arg_option options_efiload[] = {
> + {"nc", 'n', 0, N_("Loads the driver, but does not connect the driver."),
> 0, 0},
> + {0, 0, 0, 0, 0, 0}
> +};
> +
> +static grub_efi_guid_t loaded_image_protocol_guid =
> GRUB_EFI_LOADED_IMAGE_PROTOCOL_GUID;
> +
> +grub_efi_status_t
> +connect_all_efi (void)
> +{
> + grub_efi_status_t status;
> + grub_efi_uintn_t handle_count;
> + grub_efi_handle_t *handle_buffer;
> + grub_efi_uintn_t index;
> + grub_efi_boot_services_t *b;
> + grub_dprintf ("efiload", "Connecting ...\n");
> + b = grub_efi_system_table->boot_services;
> + status = efi_call_5 (b->locate_handle_buffer,
> + GRUB_EFI_ALL_HANDLES,
> + NULL, NULL,
> + &handle_count, &handle_buffer);
> +
> + if (status != GRUB_EFI_SUCCESS)
> + return status;
> +
> + for (index = 0; index < handle_count; index++)
> + {
> + status = efi_call_4 (b->connect_controller,
> + handle_buffer[index], NULL, NULL, TRUE);
> + }
> +
> + if (handle_buffer)
> + {
> + efi_call_1 (b->free_pool, handle_buffer);
> + }
> + return GRUB_EFI_SUCCESS;
> +}
> +
> +grub_err_t
> +grub_efi_driver_load (grub_size_t size, void *boot_image, int connect)
> +{
> + grub_efi_status_t status;
> + grub_efi_handle_t driver_handle;
> + grub_efi_boot_services_t *b;
> + grub_efi_loaded_image_t *loaded_image;
> +
> + b = grub_efi_system_table->boot_services;
> +
> + status = efi_call_6 (b->load_image, 0, grub_efi_image_handle, NULL,
> + boot_image, size, &driver_handle);
> + if (status != GRUB_EFI_SUCCESS)
> + {
> + if (status == GRUB_EFI_OUT_OF_RESOURCES)
> + grub_error (GRUB_ERR_OUT_OF_MEMORY, "out of resources");
> + else
> + grub_error (GRUB_ERR_BAD_OS, "cannot load image");
> + goto fail;
> + }
> + loaded_image = grub_efi_get_loaded_image (driver_handle);
> + if (! loaded_image)
> + {
> + grub_error (GRUB_ERR_BAD_OS, "no loaded image available");
> + goto fail;
> + }
> + grub_dprintf ("efiload", "Registering loaded image\n");
> + status = efi_call_3 (b->handle_protocol, driver_handle,
> + &loaded_image_protocol_guid, (void **)&loaded_image);
> + if (status != GRUB_EFI_SUCCESS)
> + {
> + grub_printf ("Not a dirver\n");
> + goto fail;
> + }
> + grub_dprintf ("efiload", "StartImage: %p\n", boot_image);
> + status = efi_call_3 (b->start_image, driver_handle, NULL, NULL);
> + if (status != GRUB_EFI_SUCCESS)
> + {
> + grub_printf ("ERROR in StartImage\n");
> + goto fail;
> + }
> + if (connect)
> + {
> + status = connect_all_efi ();
> + if (status != GRUB_EFI_SUCCESS)
> + {
> + grub_printf ("ERROR in connect_all_efi\n");
> + goto fail;
> + }
> + }
> + grub_dprintf ("efiload", "Driver installed\n");
> + return 0;
> +fail:
> + grub_error (GRUB_ERR_BAD_OS, N_("install failed."));
> + return grub_errno;
> +}
> +
> +static grub_err_t
> +grub_cmd_efiload (grub_extcmd_context_t ctxt,
> + int argc,
> + char **args)
> +{
> + struct grub_arg_list *state = ctxt->state;
> + int connect = 1;
> + grub_file_t file = 0;
> + grub_efi_boot_services_t *b;
> + grub_efi_status_t status;
> + grub_efi_uintn_t pages = 0;
> + grub_ssize_t size;
> + grub_efi_physical_address_t address;
> + void *boot_image = 0;
> +
> + b = grub_efi_system_table->boot_services;
> + if (argc != 1)
> + goto fail;
> +
> + file = grub_file_open (args[0], GRUB_FILE_TYPE_EFI_CHAINLOADED_IMAGE);
> + if (! file)
> + goto fail;
> + size = grub_file_size (file);
> + if (!size)
> + {
> + grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), args[0]);
> + goto fail;
> + }
> + pages = (((grub_efi_uintn_t) size + ((1 << 12) - 1)) >> 12);
> + status = efi_call_4 (b->allocate_pages, GRUB_EFI_ALLOCATE_ANY_PAGES,
> + GRUB_EFI_LOADER_CODE, pages, &address);
> + if (status != GRUB_EFI_SUCCESS)
> + {
> + grub_printf ("Failed to allocate %u pages\n", (unsigned int) pages);
> + grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
> + goto fail;
> + }
> + boot_image = (void *) ((grub_addr_t) address);
> + if (grub_file_read (file, boot_image, size) != size)
> + {
> + if (grub_errno == GRUB_ERR_NONE)
> + grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), args[0]);
> + goto fail;
> + }
> + grub_file_close (file);
> + if (state[0].set)
> + connect = 0;
> + grub_errno = grub_efi_driver_load (size, boot_image, connect);
> +
> + return grub_errno;
> +fail:
> + grub_printf ("ERROR\n");
> + if (file)
> + grub_file_close (file);
> + if (address)
> + efi_call_2 (b->free_pages, address, pages);
> + return 1;
> +}
> +
> +static grub_err_t
> +grub_cmd_connect (grub_extcmd_context_t ctxt __attribute__ ((unused)),
> + int argc __attribute__ ((unused)),
> + char **args __attribute__ ((unused)))
> +{
> + connect_all_efi ();
> + return GRUB_ERR_NONE;
> +}
> +
> +static grub_extcmd_t cmd_efiload, cmd_connect;
> +
> +GRUB_MOD_INIT(efiload)
> +{
> + cmd_efiload = grub_register_extcmd ("efiload", grub_cmd_efiload, 0,
> + N_("FILE"),
> + N_("Install UEFI driver."), options_efiload);
> + cmd_connect = grub_register_extcmd ("efi_connect_all", grub_cmd_connect,
> 0,
> + NULL, N_("Connect drivers."), 0);
> +}
> +
> +GRUB_MOD_FINI(efiload)
> +{
> + grub_unregister_extcmd (cmd_efiload);
> + grub_unregister_extcmd (cmd_connect);
> +}
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