On Wednesday 26 November 2014 16:22:00 Pavel Machek wrote: > On Wed 2014-11-26 14:36:42, Pali Rohár wrote: > > On Wednesday 26 November 2014 14:28:01 Pavel Machek wrote: > > > Hi! > > > > > > > for some unknown reasons when I compile kernel for n900 > > > > in DT mode it ignore cmdline passed by bootloader. When > > > > I comment > > > > > > > > CONFIG_ARM_APPENDED_DTB=y > > > > > > > > then it boots into legacy board mode and cmdline is used > > > > from bootloader. > > > > > > > > When is problem? > > > > > > It seems to work for me, I'm booting using 0xffff, with > > > attached config. > > > > > > Pavel > > > > Can you try to set some "root=something" into CONFIG_CMDLINE > > and then add real "root=" param via 0xffff? > > > > My problem is that I have specified ubifs mtd root in > > CONFIG_CMDLINE and when I set correct root via bootloader > > (from 0xffff or flasher-3.5) it is ignored and used only > > what is specified in CONFIG_CMDLINE. > > CONFIG_ARM_ATAG_DTB_COMPAT=y > CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y > # CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND is not set > CONFIG_CMDLINE="console=ttyO2,115200 console=tty" > > Um.. Internal commandline should be completely ignored for me. > > Do you have > CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER? > > Pavel Can you try to set: CONFIG_USE_OF=y CONFIG_ATAGS=y # CONFIG_DEPRECATED_PARAM_STRUCT is not set CONFIG_ZBOOT_ROM_TEXT=0x0 CONFIG_ZBOOT_ROM_BSS=0x0 CONFIG_ARM_APPENDED_DTB=y CONFIG_ARM_ATAG_DTB_COMPAT=y CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y # CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND is not set CONFIG_CMDLINE="init=/sbin/preinit ubi.mtd=rootfs root=ubi0:rootfs rootfstype=ubifs rootflags=bulk_read,no_chk_data_crc rw mtdoops.mtddev=log console=tty0 console=ttyO2 omapfb_vram=7M omapfb.mode=lcd:848x480-16 nokia-modem.pm=0" CONFIG_CMDLINE_FROM_BOOTLOADER=y # CONFIG_CMDLINE_EXTEND is not set # CONFIG_CMDLINE_FORCE is not set CONFIG_KEXEC=y CONFIG_ATAGS_PROC=y # CONFIG_CRASH_DUMP is not set CONFIG_AUTO_ZRELADDR=y and then boot kernel 3.18-rc6 with cmdline specified in bootloader? -- Pali Rohár pali.rohar@xxxxxxxxx
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