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| author | Robert Karszniewicz <r.karszniewicz@phytec.de> | 2020-08-10 14:20:08 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-08-20 09:05:26 +0200 |
| commit | d39a9871815405277a760307e58bd29973ef57b6 (patch) | |
| tree | f5e08dc681b63c07f280670e59d97d01bec8446f /include | |
| parent | 52dafe3eb5f2b5f5e695bb2a8485610b33285871 (diff) | |
| download | barebox-d39a9871815405277a760307e58bd29973ef57b6.tar.gz barebox-d39a9871815405277a760307e58bd29973ef57b6.tar.xz | |
bootm: add global.bootm.root_dev env var for booting via PARTUUID
Introduces a new env var which specifies which device is the rootfs
device to be used in Linux, passed to Linux via bootargs, identified by
the rootfs partition's PARTUUID.
global.bootm.root_dev supplements global.bootm.appendroot, in that it
overrides appendroot's naïve default, which picks the partition that the
kernel resides on (global.bootm.image).
Example:
detect mmc2
global.bootm.image='/mnt/mmc2.0/zImage'
global.bootm.appendroot=1
global.bootm.root_dev=/dev/mmc2.1
boot mmc
Signed-off-by: Robert Karszniewicz <r.karszniewicz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/bootm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/bootm.h b/include/bootm.h index ef5148f31e..51e9b3d71a 100644 --- a/include/bootm.h +++ b/include/bootm.h @@ -18,6 +18,7 @@ struct bootm_data { const char *initrd_file; const char *oftree_file; const char *tee_file; + const char *root_dev; int verbose; enum bootm_verify verify; bool force; @@ -25,6 +26,7 @@ struct bootm_data { /* * appendroot - if true, try to add a suitable root= Kernel option to * mount the rootfs from the same device as the Kernel comes from. + * The default rootfs device can be overridden with root_dev. */ bool appendroot; /* |