efi_loader: device path for SATA devices
Provide device path nodes for SATA devices.
This avoids creation of two handles with the same device path indicating
our root node.
This is what the device paths for a SATA drive with four partitions could
like:
/VenHw(..)/Sata(0x0,0xffff,0x0)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(1,MBR,0x81ea591f,0x800,0x63ff830)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(2,MBR,0x81ea591f,0x6400800,0x9ff830)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(3,MBR,0x81ea591f,0x6e00800,0x16ef2ab0)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(4,MBR,0x81ea591f,0x1dcf3800,0x1dcedab0)
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index 77d6bf2..759d911 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -457,6 +457,7 @@
# define DEVICE_PATH_SUB_TYPE_MSG_USB 0x05
# define DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR 0x0b
# define DEVICE_PATH_SUB_TYPE_MSG_USB_CLASS 0x0f
+# define DEVICE_PATH_SUB_TYPE_MSG_SATA 0x12
# define DEVICE_PATH_SUB_TYPE_MSG_NVME 0x17
# define DEVICE_PATH_SUB_TYPE_MSG_SD 0x1a
# define DEVICE_PATH_SUB_TYPE_MSG_MMC 0x1d
@@ -480,6 +481,13 @@
u8 usb_interface;
} __packed;
+struct efi_device_path_sata {
+ struct efi_device_path dp;
+ u16 hba_port;
+ u16 port_multiplier_port;
+ u16 logical_unit_number;
+} __packed;
+
struct efi_device_path_mac_addr {
struct efi_device_path dp;
struct efi_mac_addr mac;
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index f049b9e..7ae14f3 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -458,6 +458,11 @@
return dp_size(dev->parent) +
sizeof(struct efi_device_path_sd_mmc_path);
#endif
+#if defined(CONFIG_AHCI) || defined(CONFIG_SATA)
+ case UCLASS_AHCI:
+ return dp_size(dev->parent) +
+ sizeof(struct efi_device_path_sata);
+#endif
#if defined(CONFIG_NVME)
case UCLASS_NVME:
return dp_size(dev->parent) +
@@ -623,6 +628,22 @@
return &sddp[1];
}
#endif
+#if defined(CONFIG_AHCI) || defined(CONFIG_SATA)
+ case UCLASS_AHCI: {
+ struct efi_device_path_sata *dp =
+ dp_fill(buf, dev->parent);
+ struct blk_desc *desc = dev_get_uclass_platdata(dev);
+
+ dp->dp.type = DEVICE_PATH_TYPE_MESSAGING_DEVICE;
+ dp->dp.sub_type = DEVICE_PATH_SUB_TYPE_MSG_SATA;
+ dp->dp.length = sizeof(*dp);
+ dp->hba_port = desc->devnum;
+ /* default 0xffff implies no port multiplier */
+ dp->port_multiplier_port = 0xffff;
+ dp->logical_unit_number = desc->lun;
+ return &dp[1];
+ }
+#endif
#if defined(CONFIG_NVME)
case UCLASS_NVME: {
struct efi_device_path_nvme *dp =
diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c
index 49bebb5..5ae4833 100644
--- a/lib/efi_loader/efi_device_path_to_text.c
+++ b/lib/efi_loader/efi_device_path_to_text.c
@@ -149,6 +149,16 @@
break;
}
+ case DEVICE_PATH_SUB_TYPE_MSG_SATA: {
+ struct efi_device_path_sata *sdp =
+ (struct efi_device_path_sata *) dp;
+
+ s += sprintf(s, "Sata(0x%x,0x%x,0x%x)",
+ sdp->hba_port,
+ sdp->port_multiplier_port,
+ sdp->logical_unit_number);
+ break;
+ }
case DEVICE_PATH_SUB_TYPE_MSG_NVME: {
struct efi_device_path_nvme *ndp =
(struct efi_device_path_nvme *)dp;