Re: [meta-freescale] [meta-fsl-arm-extra][PATCH 3/5] wandboard: Add support to use uboot extlinux
On Mon, Oct 17, 2016 at 5:34 PM, Fabio Estevam wrote: > On Mon, Oct 17, 2016 at 5:21 PM, Fabio Berton > wrote: >> Class that allows extlinux.conf generation for U-Boot use was introduced >> on OE-core commits: >> >> - 7c18abeb2a6ef8b7bb53aa92a9ee76bd465fada2 >> - 33df3a65f3e8e136811da715d0cc247ce66ae0ea >> >> To use this feature we need to set UBOOT_EXTLINUX variable to 1 and >> UBOOT_EXTLINUX_ROOT with root path used by kernel cmdline. >> >> Signed-off-by: Fabio Berton >> --- >> conf/machine/wandboard.conf | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/conf/machine/wandboard.conf b/conf/machine/wandboard.conf >> index b1e49b3..36dfc2e 100644 >> --- a/conf/machine/wandboard.conf >> +++ b/conf/machine/wandboard.conf >> @@ -14,6 +14,9 @@ UBOOT_SUFFIX = "img" >> SPL_BINARY = "SPL" >> UBOOT_MACHINE = "wandboard_config" >> >> +UBOOT_EXTLINUX = "1" >> +UBOOT_EXTLINUX_ROOT = "root=/dev/mmcblk2p2" > > This is too fragile and changes from kernel to kernel. It also depends > on how many SD cards there are connected in the board. > > Much better approach is to use UUID solution as provided by U-Boot mainline. This is a later improvement. We need to have a way to identify the UUID of the image during the image generation and it is a "chicken / egg" type of problem. We need to address this on OE-Core before start using it here. For OE-Core-based systems, UUID does not seem to be the ideal solution as it needs to mangle the image generation process. I believe we will end using label for this. -- Otavio Salvador O.S. Systems http://www.ossystems.com.brhttp://code.ossystems.com.br Mobile: +55 (53) 9981-7854Mobile: +1 (347) 903-9750 -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
Re: [meta-freescale] [meta-fsl-arm-extra][PATCH 3/5] wandboard: Add support to use uboot extlinux
On Mon, Oct 17, 2016 at 5:21 PM, Fabio Berton wrote: > Class that allows extlinux.conf generation for U-Boot use was introduced > on OE-core commits: > > - 7c18abeb2a6ef8b7bb53aa92a9ee76bd465fada2 > - 33df3a65f3e8e136811da715d0cc247ce66ae0ea > > To use this feature we need to set UBOOT_EXTLINUX variable to 1 and > UBOOT_EXTLINUX_ROOT with root path used by kernel cmdline. > > Signed-off-by: Fabio Berton > --- > conf/machine/wandboard.conf | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/conf/machine/wandboard.conf b/conf/machine/wandboard.conf > index b1e49b3..36dfc2e 100644 > --- a/conf/machine/wandboard.conf > +++ b/conf/machine/wandboard.conf > @@ -14,6 +14,9 @@ UBOOT_SUFFIX = "img" > SPL_BINARY = "SPL" > UBOOT_MACHINE = "wandboard_config" > > +UBOOT_EXTLINUX = "1" > +UBOOT_EXTLINUX_ROOT = "root=/dev/mmcblk2p2" This is too fragile and changes from kernel to kernel. It also depends on how many SD cards there are connected in the board. Much better approach is to use UUID solution as provided by U-Boot mainline. -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
[meta-freescale] [meta-fsl-arm-extra][PATCH 3/5] wandboard: Add support to use uboot extlinux
Class that allows extlinux.conf generation for U-Boot use was introduced on OE-core commits: - 7c18abeb2a6ef8b7bb53aa92a9ee76bd465fada2 - 33df3a65f3e8e136811da715d0cc247ce66ae0ea To use this feature we need to set UBOOT_EXTLINUX variable to 1 and UBOOT_EXTLINUX_ROOT with root path used by kernel cmdline. Signed-off-by: Fabio Berton --- conf/machine/wandboard.conf | 3 +++ 1 file changed, 3 insertions(+) diff --git a/conf/machine/wandboard.conf b/conf/machine/wandboard.conf index b1e49b3..36dfc2e 100644 --- a/conf/machine/wandboard.conf +++ b/conf/machine/wandboard.conf @@ -14,6 +14,9 @@ UBOOT_SUFFIX = "img" SPL_BINARY = "SPL" UBOOT_MACHINE = "wandboard_config" +UBOOT_EXTLINUX = "1" +UBOOT_EXTLINUX_ROOT = "root=/dev/mmcblk2p2" + PREFERRED_PROVIDER_virtual/kernel ?= "linux-wandboard" KERNEL_DEVICETREE = " \ imx6dl-wandboard-revb1.dtb \ -- 2.1.4 -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
