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efi_loader: correct DeviceNodeToText for media types

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When converting device nodes and paths to text we should
stick to the UEFI spec.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2017-12-11 12:56:41 +01:00 • committed by Alexander Graf
parent 7b982f009b
commit 6ea8b580f0
1 changed files with 31 additions and 12 deletions
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43
lib/efi_loader/efi_device_path_to_text.c
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@ -90,7 +90,7 @@ static char *dp_msging(char *s, struct efi_device_path *dp)
case DEVICE_PATH_SUB_TYPE_MSG_USB: { case DEVICE_PATH_SUB_TYPE_MSG_USB: {
struct efi_device_path_usb *udp = struct efi_device_path_usb *udp =
(struct efi_device_path_usb *)dp; (struct efi_device_path_usb *)dp;
s += sprintf(s, "Usb(0x%x,0x%x)", udp->parent_port_number, s += sprintf(s, "USB(0x%x,0x%x)", udp->parent_port_number,
udp->usb_interface); udp->usb_interface);
break; break;
} }
@ -124,10 +124,10 @@ static char *dp_msging(char *s, struct efi_device_path *dp)
case DEVICE_PATH_SUB_TYPE_MSG_MMC: { case DEVICE_PATH_SUB_TYPE_MSG_MMC: {
const char *typename = const char *typename =
(dp->sub_type == DEVICE_PATH_SUB_TYPE_MSG_SD) ? (dp->sub_type == DEVICE_PATH_SUB_TYPE_MSG_SD) ?
"SDCard" : "MMC"; "SD" : "eMMC";
struct efi_device_path_sd_mmc_path *sddp = struct efi_device_path_sd_mmc_path *sddp =
(struct efi_device_path_sd_mmc_path *)dp; (struct efi_device_path_sd_mmc_path *)dp;
s += sprintf(s, "%s(Slot%u)", typename, sddp->slot_number); s += sprintf(s, "%s(%u)", typename, sddp->slot_number);
break; break;
} }
default: default:
@ -137,6 +137,13 @@ static char *dp_msging(char *s, struct efi_device_path *dp)
return s; return s;
} }
/*
* Convert a media device path node to text.
*
* @s output buffer
* @dp device path node
* @return next unused buffer address
*/
static char *dp_media(char *s, struct efi_device_path *dp) static char *dp_media(char *s, struct efi_device_path *dp)
{ {
switch (dp->sub_type) { switch (dp->sub_type) {
@ -144,21 +151,33 @@ static char *dp_media(char *s, struct efi_device_path *dp)
struct efi_device_path_hard_drive_path *hddp = struct efi_device_path_hard_drive_path *hddp =
(struct efi_device_path_hard_drive_path *)dp; (struct efi_device_path_hard_drive_path *)dp;
void *sig = hddp->partition_signature; void *sig = hddp->partition_signature;
u64 start;
u64 end;
/* Copy from packed structure to aligned memory */
memcpy(&start, &hddp->partition_start, sizeof(start));
memcpy(&end, &hddp->partition_end, sizeof(end));
switch (hddp->signature_type) { switch (hddp->signature_type) {
case SIG_TYPE_MBR: case SIG_TYPE_MBR: {
s += sprintf(s, "HD(Part%d,Sig%08x)", u32 signature;
hddp->partition_number,
*(uint32_t *)sig); memcpy(&signature, sig, sizeof(signature));
s += sprintf(
s, "HD(%d,MBR,0x%08x,0x%llx,0x%llx)",
hddp->partition_number, signature, start, end);
break; break;
}
case SIG_TYPE_GUID: case SIG_TYPE_GUID:
s += sprintf(s, "HD(Part%d,Sig%pUl)", s += sprintf(
hddp->partition_number, sig); s, "HD(%d,GPT,%pUl,0x%llx,0x%llx)",
hddp->partition_number, sig, start, end);
break; break;
default: default:
s += sprintf(s, "HD(Part%d,MBRType=%02x,SigType=%02x)", s += sprintf(
hddp->partition_number, hddp->partmap_type, s, "HD(%d,0x%02x,0,0x%llx,0x%llx)",
hddp->signature_type); hddp->partition_number, hddp->partmap_type,
start, end);
break; break;
} }