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| author | Tobias Waldekranz <tobias@waldekranz.com> | 2023-02-16 16:33:55 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-04-05 10:54:47 -0400 |
| commit | 272ec6b453049beaf0de6654dabf9bbd5f617022 (patch) | |
| tree | 03133e406371e92ce12b03b50c61a82637eea827 /lib/efi_loader/efi_device_path.c | |
| parent | 3eee5d073a6b7dbbee3d6ab158ed092c441f42fd (diff) | |
| download | u-boot-272ec6b453049beaf0de6654dabf9bbd5f617022.zip u-boot-272ec6b453049beaf0de6654dabf9bbd5f617022.tar.gz u-boot-272ec6b453049beaf0de6654dabf9bbd5f617022.tar.bz2 | |
efi_loader: device_path: support blkmap devicesWIP/2023-04-05-blkmap-composable-virtual-block-devices
Create a distinct EFI device path for each blkmap device.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'lib/efi_loader/efi_device_path.c')
| -rw-r--r-- | lib/efi_loader/efi_device_path.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c index ea09783..e2e98a3 100644 --- a/lib/efi_loader/efi_device_path.c +++ b/lib/efi_loader/efi_device_path.c @@ -21,6 +21,9 @@ #include <asm-generic/unaligned.h> #include <linux/compat.h> /* U16_MAX */ +#ifdef CONFIG_BLKMAP +const efi_guid_t efi_guid_blkmap_dev = U_BOOT_BLKMAP_DEV_GUID; +#endif #ifdef CONFIG_SANDBOX const efi_guid_t efi_guid_host_dev = U_BOOT_HOST_DEV_GUID; #endif @@ -556,6 +559,16 @@ __maybe_unused static unsigned int dp_size(struct udevice *dev) return dp_size(dev->parent) + sizeof(struct efi_device_path_vendor) + 1; #endif +#ifdef CONFIG_BLKMAP + case UCLASS_BLKMAP: + /* + * blkmap devices will be represented as a vendor + * device node with an extra byte for the device + * number. + */ + return dp_size(dev->parent) + + sizeof(struct efi_device_path_vendor) + 1; +#endif default: return dp_size(dev->parent); } @@ -613,6 +626,23 @@ __maybe_unused static void *dp_fill(void *buf, struct udevice *dev) #endif case UCLASS_BLK: switch (dev->parent->uclass->uc_drv->id) { +#ifdef CONFIG_BLKMAP + case UCLASS_BLKMAP: { + struct efi_device_path_vendor *dp; + struct blk_desc *desc = dev_get_uclass_plat(dev); + + dp_fill(buf, dev->parent); + dp = buf; + ++dp; + dp->dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE; + dp->dp.sub_type = DEVICE_PATH_SUB_TYPE_VENDOR; + dp->dp.length = sizeof(*dp) + 1; + memcpy(&dp->guid, &efi_guid_blkmap_dev, + sizeof(efi_guid_t)); + dp->vendor_data[0] = desc->devnum; + return &dp->vendor_data[1]; + } +#endif #ifdef CONFIG_SANDBOX case UCLASS_HOST: { /* stop traversing parents at this point: */ |