summaryrefslogtreecommitdiff
path: root/src/sd-boot/linux.c
diff options
context:
space:
mode:
authorTom Gundersen <teg@jklm.no>2015-02-17 20:12:50 +0100
committerTom Gundersen <teg@jklm.no>2015-02-18 15:23:23 +0100
commite7dd673d1e0acfe5420599588c559fd85a3a9e8f (patch)
treeecfef02be389745e295322e6a81df481869636c7 /src/sd-boot/linux.c
parent8d4efa540a88b19a475452d8ccc3c9824849fa86 (diff)
gummiboot/sd-boot/systemd-boot: rename galore
What used to be gummiboot, was renamed sd-boot when it was merged into systemd. Let's try to be a bit more consistent with the rest of systemd and rename it again as follows: The EFI bootloader is now called 'systemd-bootx64.efi', and its sources are in 'src/boot/efi/'. The drop-in directory where bootctl will find EFI loaders is now /usr/lib/systemd/boot/efi/.
Diffstat (limited to 'src/sd-boot/linux.c')
-rw-r--r--src/sd-boot/linux.c130
1 files changed, 0 insertions, 130 deletions
diff --git a/src/sd-boot/linux.c b/src/sd-boot/linux.c
deleted file mode 100644
index 809c69310e..0000000000
--- a/src/sd-boot/linux.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This program 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
- * Lesser General Public License for more details.
- *
- * Copyright (C) 2015 Kay Sievers <kay@vrfy.org>
- */
-
-#include <efi.h>
-#include <efilib.h>
-
-#include "util.h"
-#include "linux.h"
-
-#define SETUP_MAGIC 0x53726448 /* "HdrS" */
-struct SetupHeader {
- UINT8 boot_sector[0x01f1];
- UINT8 setup_secs;
- UINT16 root_flags;
- UINT32 sys_size;
- UINT16 ram_size;
- UINT16 video_mode;
- UINT16 root_dev;
- UINT16 signature;
- UINT16 jump;
- UINT32 header;
- UINT16 version;
- UINT16 su_switch;
- UINT16 setup_seg;
- UINT16 start_sys;
- UINT16 kernel_ver;
- UINT8 loader_id;
- UINT8 load_flags;
- UINT16 movesize;
- UINT32 code32_start;
- UINT32 ramdisk_start;
- UINT32 ramdisk_len;
- UINT32 bootsect_kludge;
- UINT16 heap_end;
- UINT8 ext_loader_ver;
- UINT8 ext_loader_type;
- UINT32 cmd_line_ptr;
- UINT32 ramdisk_max;
- UINT32 kernel_alignment;
- UINT8 relocatable_kernel;
- UINT8 min_alignment;
- UINT16 xloadflags;
- UINT32 cmdline_size;
- UINT32 hardware_subarch;
- UINT64 hardware_subarch_data;
- UINT32 payload_offset;
- UINT32 payload_length;
- UINT64 setup_data;
- UINT64 pref_address;
- UINT32 init_size;
- UINT32 handover_offset;
-} __attribute__((packed));
-
-#ifdef __x86_64__
-typedef VOID(*handover_f)(VOID *image, EFI_SYSTEM_TABLE *table, struct SetupHeader *setup);
-static inline VOID linux_efi_handover(EFI_HANDLE image, struct SetupHeader *setup) {
- handover_f handover;
-
- asm volatile ("cli");
- handover = (handover_f)((UINTN)setup->code32_start + 512 + setup->handover_offset);
- handover(image, ST, setup);
-}
-#else
-typedef VOID(*handover_f)(VOID *image, EFI_SYSTEM_TABLE *table, struct SetupHeader *setup) __attribute__((regparm(0)));
-static inline VOID linux_efi_handover(EFI_HANDLE image, struct SetupHeader *setup) {
- handover_f handover;
-
- handover = (handover_f)((UINTN)setup->code32_start + setup->handover_offset);
- handover(image, ST, setup);
-}
-#endif
-
-EFI_STATUS linux_exec(EFI_HANDLE *image,
- CHAR8 *cmdline, UINTN cmdline_len,
- UINTN linux_addr,
- UINTN initrd_addr, UINTN initrd_size) {
- struct SetupHeader *image_setup;
- struct SetupHeader *boot_setup;
- EFI_PHYSICAL_ADDRESS addr;
- EFI_STATUS err;
-
- image_setup = (struct SetupHeader *)(linux_addr);
- if (image_setup->signature != 0xAA55 || image_setup->header != SETUP_MAGIC)
- return EFI_LOAD_ERROR;
-
- if (image_setup->version < 0x20b || !image_setup->relocatable_kernel)
- return EFI_LOAD_ERROR;
-
- addr = 0x3fffffff;
- err = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress, EfiLoaderData,
- EFI_SIZE_TO_PAGES(0x4000), &addr);
- if (EFI_ERROR(err))
- return err;
- boot_setup = (struct SetupHeader *)(UINTN)addr;
- ZeroMem(boot_setup, 0x4000);
- CopyMem(boot_setup, image_setup, sizeof(struct SetupHeader));
- boot_setup->loader_id = 0xff;
-
- boot_setup->code32_start = (UINT32)linux_addr + (image_setup->setup_secs+1) * 512;
-
- if (cmdline) {
- addr = 0xA0000;
- err = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress, EfiLoaderData,
- EFI_SIZE_TO_PAGES(cmdline_len + 1), &addr);
- if (EFI_ERROR(err))
- return err;
- CopyMem((VOID *)(UINTN)addr, cmdline, cmdline_len);
- ((CHAR8 *)addr)[cmdline_len] = 0;
- boot_setup->cmd_line_ptr = (UINT32)addr;
- }
-
- boot_setup->ramdisk_start = (UINT32)initrd_addr;
- boot_setup->ramdisk_len = (UINT32)initrd_size;
-
- linux_efi_handover(image, boot_setup);
- return EFI_LOAD_ERROR;
-}