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sd-boot:append deviceloader kernel option

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With this patch systemd-boot appends an extra parameter to the kernel
cmdline. The parameter is called deviceloader and gives the device
where the kernel will be booted from.

The deviceloader parameter has the next format:
	deviceloader=PARTUUID_EFI_PARTITION

Signed-off-by: Jose Carlos Venegas Munoz <jos.c.venegas.munoz@intel.com>
This commit is contained in:
Jose Carlos Venegas Munoz
2015-10-13 12:04:34 +01:00
committed by Dimitri John Ledkov
parent a402ca3874
commit 5900c132c1
1 changed files with 16 additions and 1 deletions
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src/boot/efi/boot.c
+16 -1
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@@ -1085,6 +1085,8 @@ static VOID config_entry_add_from_file(Config *config, EFI_HANDLE *device, CHAR1
if (strcmpa((CHAR8 *)"options", key) == 0) {
CHAR16 *new;
CHAR16 uuid[37];
CHAR16 *clr_cmdline;
new = stra_to_str(value);
if (entry->options) {
@@ -1097,6 +1099,13 @@ static VOID config_entry_add_from_file(Config *config, EFI_HANDLE *device, CHAR1
entry->options = new;
new = NULL;
}
if (disk_get_part_uuid(device, uuid) == EFI_SUCCESS){
clr_cmdline = PoolPrint(L"%s deviceloader=%s", entry->options, uuid);
FreePool(entry->options);
entry->options = clr_cmdline;
}
FreePool(new);
continue;
}
@@ -1580,6 +1589,8 @@ static VOID config_entry_add_linux( Config *config, EFI_LOADED_IMAGE *loaded_ima
CHAR16 *conf;
CHAR16 *path;
CHAR16 *cmdline;
CHAR16 uuid[37];
CHAR16 *clr_cmdline;
conf = PoolPrint(L"%s-%s", os_id, os_version ? : os_build);
path = PoolPrint(L"\\EFI\\Linux\\%s", f->FileName);
@@ -1590,7 +1601,11 @@ static VOID config_entry_add_linux( Config *config, EFI_LOADED_IMAGE *loaded_ima
len = file_read(linux_dir, f->FileName, offs[1], szs[1] - 1 , &content);
if (len > 0) {
cmdline = stra_to_str(content);
entry->options = cmdline;
if (disk_get_part_uuid(loaded_image->DeviceHandle, uuid) == EFI_SUCCESS){
clr_cmdline = PoolPrint(L"%s deviceloader=%s", cmdline, uuid);
}
entry->options = clr_cmdline;
cmdline = NULL;
}
FreePool(cmdline);