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| author | Tien Fong Chee <tien.fong.chee@intel.com> | 2018-07-06 16:27:35 +0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-09-28 20:22:33 -0400 |
| commit | fc5ca3ab5422601775148e7f65b28aa205055279 (patch) | |
| tree | d481ba3c9e03ac02a972099a8dd26b1be43feb3c /doc/device-tree-bindings | |
| parent | 45029758be16456189671b63137b41a5d3fe3d8d (diff) | |
| download | u-boot-fc5ca3ab5422601775148e7f65b28aa205055279.tar.gz | |
doc: dtbinding: Add file system firmware loader binding document
Add a document to describe file system firmware loader binding
information.
Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc/device-tree-bindings')
| -rw-r--r-- | doc/device-tree-bindings/chosen.txt | 21 | ||||
| -rw-r--r-- | doc/device-tree-bindings/misc/fs_loader.txt | 48 |
2 files changed, 69 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/chosen.txt b/doc/device-tree-bindings/chosen.txt index da7b4e6c45..86c533ad6d 100644 --- a/doc/device-tree-bindings/chosen.txt +++ b/doc/device-tree-bindings/chosen.txt @@ -83,3 +83,24 @@ of where said later stage was booted from. You should not define this property yourself in the device-tree, as it may be overwritten without warning. + +firmware-loader property +------------------------ +Multiple file system firmware loader nodes could be defined in device trees for +multiple storage type and their default partition, then a property +"firmware-loader" can be used to pass default firmware loader +node(default storage type) to the firmware loader driver. + +Example +------- +/ { + chosen { + firmware-loader = &fs_loader0; + }; + + fs_loader0: fs-loader@0 { + u-boot,dm-pre-reloc; + compatible = "u-boot,fs-loader"; + phandlepart = <&mmc 1>; + }; +}; diff --git a/doc/device-tree-bindings/misc/fs_loader.txt b/doc/device-tree-bindings/misc/fs_loader.txt new file mode 100644 index 0000000000..884fbf47c0 --- /dev/null +++ b/doc/device-tree-bindings/misc/fs_loader.txt @@ -0,0 +1,48 @@ +* File system firmware loader + +Required properties: +-------------------- + +- compatible: should contain "u-boot,fs-loader" +- phandlepart: which block storage device and partition the image loading from, + this property is required for mmc, usb and sata. This is unsigned + 32-bit array. For example phandlepart=<&mmc_0 1>, meaning use + that MMC0 node pointer, partition 1. +- mdtpart: which partition of ubi the image loading from, this property is + required for ubi and mounting. +- ubivol: which volume of ubi the image loading from, this property is required + for ubi and mounting. + +Example of storage device and partition search set for mmc, usb, sata and +ubi in device tree source as shown in below: + + Example of storage type and device partition search set for mmc, usb, + sata and ubi as shown in below: + Example for mmc: + fs_loader0: fs-loader@0 { + u-boot,dm-pre-reloc; + compatible = "u-boot,fs-loader"; + phandlepart = <&mmc_0 1>; + }; + + Example for usb: + fs_loader1: fs-loader@1 { + u-boot,dm-pre-reloc; + compatible = "u-boot,fs-loader"; + phandlepart = <&usb0 1>; + }; + + Example for sata: + fs_loader2: fs-loader@2 { + u-boot,dm-pre-reloc; + compatible = "u-boot,fs-loader"; + phandlepart = <&sata0 1>; + }; + + Example for ubi: + fs_loader3: fs-loader@3 { + u-boot,dm-pre-reloc; + compatible = "u-boot,fs-loader"; + mtdpart = "UBI", + ubivol = "ubi0"; + }; |