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efi_loader: device path for SATA devices

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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>
This commit is contained in:
Heinrich Schuchardt 2020-05-20 23:12:02 +02:00
parent 19ecced71c
commit bf3bcef7fb
3 changed files with 39 additions and 0 deletions
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8
include/efi_api.h
View file

@ -457,6 +457,7 @@ struct efi_device_path_acpi_path {
# 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 @@ struct efi_device_path_usb {
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;

21
lib/efi_loader/efi_device_path.c
View file

@ -458,6 +458,11 @@ __maybe_unused static unsigned int dp_size(struct udevice *dev)
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 @@ __maybe_unused static void *dp_fill(void *buf, struct udevice *dev)
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 =

10
lib/efi_loader/efi_device_path_to_text.c
View file

@ -149,6 +149,16 @@ static char *dp_msging(char *s, struct efi_device_path *dp)
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;