arm64: add EFI Linux loader
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
This commit is contained in:
Leif Lindholm
parent
c415eaa98f
commit
30a9ab952f
5 changed files with 551 additions and 1 deletions
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@ -1,3 +1,7 @@
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2013-12-22 Leif Lindholm <leif.lindholm@linaro.org>
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Add arm64 Linux loader.
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2013-12-22 Leif Lindholm <leif.lindholm@linaro.org>
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Add grub_fdt_create_empty_tree() and grub_fdt_set_prop64().
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@ -1672,7 +1672,8 @@ module = {
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sparc64_ieee1275 = loader/sparc64/ieee1275/linux.c;
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ia64_efi = loader/ia64/efi/linux.c;
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arm = loader/arm/linux.c;
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arm = lib/fdt.c;
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arm64 = loader/arm64/linux.c;
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fdt = lib/fdt.c;
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common = loader/linux.c;
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common = lib/cmdline.c;
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enable = noemu;
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487
grub-core/loader/arm64/linux.c
Normal file
487
grub-core/loader/arm64/linux.c
Normal file
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@ -0,0 +1,487 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/charset.h>
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#include <grub/command.h>
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#include <grub/err.h>
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#include <grub/file.h>
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#include <grub/fdt.h>
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#include <grub/linux.h>
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#include <grub/loader.h>
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#include <grub/mm.h>
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#include <grub/types.h>
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#include <grub/cpu/linux.h>
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#include <grub/efi/efi.h>
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#include <grub/efi/pe32.h>
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#include <grub/i18n.h>
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#include <grub/lib/cmdline.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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#define GRUB_EFI_PAGE_SHIFT 12
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#define BYTES_TO_PAGES(bytes) (((bytes) + 0xfff) >> GRUB_EFI_PAGE_SHIFT)
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#define GRUB_EFI_PE_MAGIC 0x5A4D
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static grub_efi_guid_t fdt_guid = GRUB_EFI_DEVICE_TREE_GUID;
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static grub_dl_t my_mod;
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static int loaded;
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static void *kernel_addr;
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static grub_uint64_t kernel_size;
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static char *linux_args;
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static grub_uint32_t cmdline_size;
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static grub_addr_t initrd_start;
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static grub_addr_t initrd_end;
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static void *loaded_fdt;
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static void *fdt;
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static void *
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get_firmware_fdt (void)
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{
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grub_efi_configuration_table_t *tables;
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void *firmware_fdt = NULL;
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unsigned int i;
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/* Look for FDT in UEFI config tables. */
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tables = grub_efi_system_table->configuration_table;
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for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
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if (grub_memcmp (&tables[i].vendor_guid, &fdt_guid, sizeof (fdt_guid)) == 0)
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{
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firmware_fdt = tables[i].vendor_table;
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grub_dprintf ("linux", "found registered FDT @ 0x%p\n", firmware_fdt);
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break;
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}
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return firmware_fdt;
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}
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static void
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get_fdt (void)
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{
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void *raw_fdt;
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grub_size_t size;
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if (fdt)
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{
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size = BYTES_TO_PAGES (grub_fdt_get_totalsize (fdt));
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grub_efi_free_pages ((grub_efi_physical_address_t) fdt, size);
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}
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if (loaded_fdt)
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raw_fdt = loaded_fdt;
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else
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raw_fdt = get_firmware_fdt();
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size =
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raw_fdt ? grub_fdt_get_totalsize (raw_fdt) : GRUB_FDT_EMPTY_TREE_SZ;
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size += 0x400;
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grub_dprintf ("linux", "allocating %ld bytes for fdt\n", size);
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fdt = grub_efi_allocate_pages (0, BYTES_TO_PAGES (size));
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if (!fdt)
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return;
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if (raw_fdt)
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{
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grub_memmove (fdt, raw_fdt, size);
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grub_fdt_set_totalsize (fdt, size);
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}
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else
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{
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grub_fdt_create_empty_tree (fdt, size);
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}
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}
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static grub_err_t
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check_kernel (struct linux_kernel_header *lh)
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{
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if (lh->magic != GRUB_LINUX_MAGIC)
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return grub_error(GRUB_ERR_BAD_OS, "invalid magic number");
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if ((lh->code0 & 0xffff) != GRUB_EFI_PE_MAGIC)
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return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
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N_("plain Image kernel not supported - rebuild with CONFIG_(U)EFI_STUB enabled");
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grub_dprintf ("linux", "UEFI stub kernel:\n");
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grub_dprintf ("linux", "text_offset = 0x%012llx\n",
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(long long unsigned) lh->text_offset);
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grub_dprintf ("linux", "PE/COFF header @ %08x\n", lh->hdr_offset);
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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finalize_params (void)
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{
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grub_efi_boot_services_t *b;
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grub_efi_status_t status;
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int node, retval;
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get_fdt ();
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if (!fdt)
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goto failure;
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node = grub_fdt_find_subnode (fdt, 0, "chosen");
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if (node < 0)
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node = grub_fdt_add_subnode (fdt, 0, "chosen");
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if (node < 1)
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goto failure;
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/* Set initrd info */
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if (initrd_start && initrd_end > initrd_start)
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{
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grub_dprintf ("linux", "Initrd @ 0x%012lx-0x%012lx\n",
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initrd_start, initrd_end);
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retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-start",
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initrd_start);
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if (retval)
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goto failure;
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retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-end",
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initrd_end);
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if (retval)
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goto failure;
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}
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b = grub_efi_system_table->boot_services;
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status = b->install_configuration_table (&fdt_guid, fdt);
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if (status != GRUB_EFI_SUCCESS)
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goto failure;
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grub_dprintf ("linux", "Installed/updated FDT configuration table @ %p\n",
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fdt);
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return GRUB_ERR_NONE;
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failure:
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grub_efi_free_pages ((grub_efi_physical_address_t) fdt,
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BYTES_TO_PAGES (grub_fdt_get_totalsize (fdt)));
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fdt = NULL;
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return grub_error(GRUB_ERR_BAD_OS, "failed to install/update FDT");
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}
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static grub_err_t
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grub_cmd_devicetree (grub_command_t cmd __attribute__ ((unused)),
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int argc, char *argv[])
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{
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grub_file_t dtb;
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void *blob = NULL;
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int size;
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if (!loaded)
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{
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grub_error (GRUB_ERR_BAD_ARGUMENT,
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N_("you need to load the kernel first"));
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return GRUB_ERR_BAD_OS;
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}
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if (argc != 1)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
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if (loaded_fdt)
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grub_free (loaded_fdt);
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loaded_fdt = NULL;
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dtb = grub_file_open (argv[0]);
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if (!dtb)
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goto out;
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size = grub_file_size (dtb);
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blob = grub_malloc (size);
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if (!blob)
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goto out;
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if (grub_file_read (dtb, blob, size) < size)
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{
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if (!grub_errno)
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grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), argv[0]);
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goto out;
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}
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if (grub_fdt_check_header (blob, size) != 0)
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{
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grub_error (GRUB_ERR_BAD_OS, N_("invalid device tree"));
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goto out;
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}
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out:
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if (dtb)
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grub_file_close (dtb);
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if (blob)
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{
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if (grub_errno == GRUB_ERR_NONE)
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loaded_fdt = blob;
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else
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grub_free (blob);
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}
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return grub_errno;
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}
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static grub_err_t
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grub_linux_boot (void)
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{
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grub_efi_memory_mapped_device_path_t *mempath;
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grub_efi_handle_t image_handle;
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grub_efi_boot_services_t *b;
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grub_efi_status_t status;
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grub_err_t retval;
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grub_efi_loaded_image_t *loaded_image;
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int len;
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retval = finalize_params();
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if (retval != GRUB_ERR_NONE)
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return retval;
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mempath = grub_malloc (2 * sizeof (grub_efi_memory_mapped_device_path_t));
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if (!mempath)
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return grub_errno;
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mempath[0].header.type = GRUB_EFI_HARDWARE_DEVICE_PATH_TYPE;
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mempath[0].header.subtype = GRUB_EFI_MEMORY_MAPPED_DEVICE_PATH_SUBTYPE;
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mempath[0].header.length = grub_cpu_to_le16_compile_time (sizeof (*mempath));
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mempath[0].memory_type = GRUB_EFI_LOADER_DATA;
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mempath[0].start_address = (grub_addr_t) kernel_addr;
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mempath[0].end_address = (grub_addr_t) kernel_addr + kernel_size;
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mempath[1].header.type = GRUB_EFI_END_DEVICE_PATH_TYPE;
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mempath[1].header.subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
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mempath[1].header.length = 0;
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b = grub_efi_system_table->boot_services;
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status = b->load_image (0, grub_efi_image_handle,
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(grub_efi_device_path_t *) mempath,
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kernel_addr, kernel_size, &image_handle);
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if (status != GRUB_EFI_SUCCESS)
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return grub_error (GRUB_ERR_BAD_OS, "cannot load image");
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grub_dprintf ("linux", "linux command line: '%s'\n", linux_args);
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/* Convert command line to UCS-2 */
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loaded_image = grub_efi_get_loaded_image (image_handle);
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loaded_image->load_options_size = len =
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(grub_strlen (linux_args) + 1) * sizeof (grub_efi_char16_t);
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loaded_image->load_options =
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grub_efi_allocate_pages (0,
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BYTES_TO_PAGES (loaded_image->load_options_size));
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if (!loaded_image->load_options)
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return grub_errno;
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loaded_image->load_options_size =
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2 * grub_utf8_to_utf16 (loaded_image->load_options, len,
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(grub_uint8_t *) linux_args, len, NULL);
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grub_dprintf("linux", "starting image %p\n", image_handle);
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status = b->start_image (image_handle, 0, NULL);
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/* When successful, not reached */
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b->unload_image (image_handle);
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grub_efi_free_pages ((grub_efi_physical_address_t) loaded_image->load_options,
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BYTES_TO_PAGES (loaded_image->load_options_size));
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return grub_errno;
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}
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static grub_err_t
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grub_linux_unload (void)
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{
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grub_dl_unref (my_mod);
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loaded = 0;
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if (initrd_start)
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grub_efi_free_pages ((grub_efi_physical_address_t) initrd_start,
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BYTES_TO_PAGES (initrd_end - initrd_start));
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initrd_start = initrd_end = 0;
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grub_free (linux_args);
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if (kernel_addr)
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grub_efi_free_pages ((grub_efi_physical_address_t) kernel_addr,
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BYTES_TO_PAGES (kernel_size));
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if (fdt)
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grub_efi_free_pages ((grub_efi_physical_address_t) fdt,
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BYTES_TO_PAGES (grub_fdt_get_totalsize (fdt)));
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
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int argc, char *argv[])
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{
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struct grub_linux_initrd_context initrd_ctx;
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int initrd_size, initrd_pages;
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void *initrd_mem = NULL;
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if (argc == 0)
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{
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grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
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goto fail;
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}
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if (!loaded)
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{
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grub_error (GRUB_ERR_BAD_ARGUMENT,
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N_("you need to load the kernel first"));
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goto fail;
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}
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if (grub_initrd_init (argc, argv, &initrd_ctx))
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goto fail;
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initrd_size = grub_get_initrd_size (&initrd_ctx);
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grub_dprintf ("linux", "Loading initrd\n");
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initrd_pages = (BYTES_TO_PAGES (initrd_size));
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initrd_mem = grub_efi_allocate_pages (0, initrd_pages);
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if (!initrd_mem)
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{
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grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
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goto fail;
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}
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if (grub_initrd_load (&initrd_ctx, argv, initrd_mem))
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goto fail;
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initrd_start = (grub_addr_t) initrd_mem;
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initrd_end = initrd_start + initrd_size;
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grub_dprintf ("linux", "[addr=%p, size=0x%x]\n",
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(void *) initrd_start, initrd_size);
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fail:
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grub_initrd_close (&initrd_ctx);
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if (initrd_mem && !initrd_start)
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grub_efi_free_pages ((grub_efi_physical_address_t) initrd_mem,
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initrd_pages);
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return grub_errno;
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}
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static grub_err_t
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grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
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int argc, char *argv[])
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{
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grub_file_t file = 0;
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struct linux_kernel_header lh;
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grub_dl_ref (my_mod);
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|
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if (argc == 0)
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{
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grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
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goto fail;
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}
|
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file = grub_file_open (argv[0]);
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if (!file)
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goto fail;
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kernel_size = grub_file_size (file);
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if (grub_file_read (file, &lh, sizeof (lh)) < (long) sizeof (lh))
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return grub_errno;
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if (check_kernel (&lh) != GRUB_ERR_NONE)
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goto fail;
|
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grub_loader_unset();
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grub_dprintf ("linux", "kernel file size: %lld\n", (long long) kernel_size);
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kernel_addr = grub_efi_allocate_pages (0, BYTES_TO_PAGES (kernel_size));
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grub_dprintf ("linux", "kernel numpages: %lld\n",
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(long long) BYTES_TO_PAGES (kernel_size));
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if (!kernel_addr)
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{
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grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
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goto fail;
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}
|
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|
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grub_file_seek (file, 0);
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if (grub_file_read (file, kernel_addr, kernel_size)
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< (grub_int64_t) kernel_size)
|
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{
|
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if (!grub_errno)
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grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), argv[0]);
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goto fail;
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}
|
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|
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grub_dprintf ("linux", "kernel @ %p\n", kernel_addr);
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cmdline_size = grub_loader_cmdline_size (argc, argv) + sizeof (LINUX_IMAGE);
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linux_args = grub_malloc (cmdline_size);
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if (!linux_args)
|
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{
|
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grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
|
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goto fail;
|
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}
|
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grub_memcpy (linux_args, LINUX_IMAGE, sizeof (LINUX_IMAGE));
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||||
grub_create_loader_cmdline (argc, argv,
|
||||
linux_args + sizeof (LINUX_IMAGE) - 1,
|
||||
cmdline_size);
|
||||
|
||||
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_efi_physical_address_t) kernel_addr,
|
||||
BYTES_TO_PAGES (kernel_size));
|
||||
|
||||
return grub_errno;
|
||||
}
|
||||
|
||||
|
||||
static grub_command_t cmd_linux, cmd_initrd, cmd_devicetree;
|
||||
|
||||
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."));
|
||||
cmd_devicetree =
|
||||
grub_register_command ("devicetree", grub_cmd_devicetree, 0,
|
||||
N_("Load DTB file."));
|
||||
my_mod = mod;
|
||||
}
|
||||
|
||||
GRUB_MOD_FINI (linux)
|
||||
{
|
||||
grub_unregister_command (cmd_linux);
|
||||
grub_unregister_command (cmd_initrd);
|
||||
grub_unregister_command (cmd_devicetree);
|
||||
}
|
||||
54
include/grub/arm64/linux.h
Normal file
54
include/grub/arm64/linux.h
Normal file
|
|
@ -0,0 +1,54 @@
|
|||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2013 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 GRUB_LINUX_CPU_HEADER
|
||||
#define GRUB_LINUX_CPU_HEADER 1
|
||||
|
||||
#include <grub/efi/efi.h>
|
||||
|
||||
#define GRUB_EFI_KERNEL_STUB_ENTRY_OFFSET 0
|
||||
#define GRUB_LINUX_MAX_LOAD_ADDR 0xffffffffffffULL
|
||||
|
||||
#define GRUB_LINUX_MAGIC 0x644d5241 /* 'ARM\x64' */
|
||||
|
||||
/* From linux/Documentation/arm64/booting.txt */
|
||||
struct linux_kernel_header
|
||||
{
|
||||
grub_uint32_t code0; /* Executable code */
|
||||
grub_uint32_t code1; /* Executable code */
|
||||
grub_uint64_t text_offset; /* Image load offset */
|
||||
grub_uint64_t res0; /* reserved */
|
||||
grub_uint64_t res1; /* reserved */
|
||||
grub_uint64_t res2; /* reserved */
|
||||
grub_uint64_t res3; /* reserved */
|
||||
grub_uint64_t res4; /* reserved */
|
||||
grub_uint32_t magic; /* Magic number, little endian, "ARM\x64" */
|
||||
grub_uint32_t hdr_offset; /* Offset of PE/COFF header */
|
||||
};
|
||||
|
||||
#define grub_linux_get_params() NULL
|
||||
extern grub_err_t grub_linux_init_params (void);
|
||||
extern grub_err_t grub_linux_finalize_params (void);
|
||||
extern grub_err_t grub_linux_register_kernel (struct linux_kernel_header *lh);
|
||||
extern grub_err_t grub_linux_register_cmdline (void * addr);
|
||||
extern grub_err_t grub_linux_register_initrd (void * addr, grub_size_t size);
|
||||
|
||||
extern void grub_efi_linux_arch_register_commands (void);
|
||||
extern void grub_efi_linux_arch_unregister_commands (void);
|
||||
|
||||
#endif /* ! GRUB_LINUX_CPU_HEADER */
|
||||
|
|
@ -276,6 +276,10 @@
|
|||
{ 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 } \
|
||||
}
|
||||
|
||||
#define GRUB_EFI_DEVICE_TREE_GUID \
|
||||
{ 0xb1b621d5, 0xf19c, 0x41a5, \
|
||||
{ 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 } \
|
||||
}
|
||||
struct grub_efi_sal_system_table
|
||||
{
|
||||
grub_uint32_t signature;
|
||||
|
|
|
|||
Loading…
Reference in a new issue