Message ID | CAOCHtYiQXNxaPQq+AERCzgt3GSnA6BUvv_Aa-26tnJ6LmhrafQ@mail.gmail.com |
---|---|
State | RFC |
Delegated to: | Tom Rini |
Headers | show |
On Thu, Jan 14, 2016 at 11:48:07AM -0600, Robert Nelson wrote: > On Thu, Jan 14, 2016 at 11:31 AM, Tom Rini <trini@konsulko.com> wrote: > > > On Mon, Jan 11, 2016 at 09:59:18AM -0700, Simon Glass wrote: > > > Hi Craig, > > > > > > On 20 December 2015 at 19:07, Craig McQueen > > > <craig.mcqueen@innerrange.com> wrote: > > > > This is to avoid the boot sequence halting due to initial "junk" > > > > received on serial input. > > > > > > > > Signed-off-by: Craig McQueen <craig.mcqueen@innerrange.com> > > > > --- > > > > I have found that on the BeagleBone Black, U-Boot occasionally halts at > > > > the U-Boot prompt at boot-up, whether power-up, warm external > > > > reset or software reset. I have seen other people report the same > > issue. > > > > > > > > This seems to be due to U-Boot receiving "junk" data on the serial > > > > console. The BeagleBone Black has a pull-down resistor which was > > > > apparently added to try to mitigate this issue, but it doesn't entirely > > > > fix it. > > > > > > I wonder if this can be fixed for that board only? > > > > No, and it's not -exactly- a that board only problem. It's a HW design > > issue that can show up elsewhere too. I _think_ however in this case > > the answer would be to migrate to perhaps CONFIG_AUTOBOOT_KEYED_CTRLC as > > that's one of the reason various other boards use that set of options. > > > > I would suggest bringing this up on the beaglebone list to see what the > > various people that ship and support these boards think, thanks! > > > > I actually enabled this feature this week by default for beagleboard.org: > > diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig > index 27cb881..8699953 100644 > --- a/configs/am335x_evm_defconfig > +++ b/configs/am335x_evm_defconfig > @@ -3,7 +3,10 @@ CONFIG_TARGET_AM335X_EVM=y > CONFIG_SPL_STACK_R_ADDR=0x82000000 > CONFIG_SPL=y > CONFIG_SPL_STACK_R=y > -CONFIG_SYS_EXTRA_OPTIONS="NAND" > +CONFIG_AUTOBOOT_KEYED=y > +CONFIG_AUTOBOOT_PROMPT="Press SPACE to abort autoboot in %d seconds\n" > +CONFIG_AUTOBOOT_DELAY_STR="d" > +CONFIG_AUTOBOOT_STOP_STR=" " > # CONFIG_CMD_IMLS is not set > # CONFIG_CMD_FLASH is not set > CONFIG_CMD_GPIO=y > > It'll take time to replace older images but on target users can just: > > cd /opt/scripts/tools/developers/ > git pull > sudo ./update_bootloader.sh > > U-Boot SPL 2016.01-00001-g4eb802e (Jan 13 2016 - 11:14:31) > Trying to boot from MMC > bad magic > > > U-Boot 2016.01-00001-g4eb802e (Jan 13 2016 - 11:14:31 -0600), Build: > jenkins-github_Bootloader-Builder-313 > > Watchdog enabled > I2C: ready > DRAM: 512 MiB > Reset Source: Global external warm reset has occurred. > Reset Source: Power-on reset has occurred. > MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 > Using default environment > > Net: <ethaddr> not set. Validating first E-fuse MAC > cpsw, usb_ether > Press SPACE to abort autoboot in 2 seconds > => Space eh? OK. Now would be the time to push this upstream as the merge window just opened :)
On Thu, Jan 14, 2016 at 11:51 AM, Tom Rini <trini@konsulko.com> wrote: > On Thu, Jan 14, 2016 at 11:48:07AM -0600, Robert Nelson wrote: > > On Thu, Jan 14, 2016 at 11:31 AM, Tom Rini <trini@konsulko.com> wrote: > > > > > On Mon, Jan 11, 2016 at 09:59:18AM -0700, Simon Glass wrote: > > > > Hi Craig, > > > > > > > > On 20 December 2015 at 19:07, Craig McQueen > > > > <craig.mcqueen@innerrange.com> wrote: > > > > > This is to avoid the boot sequence halting due to initial "junk" > > > > > received on serial input. > > > > > > > > > > Signed-off-by: Craig McQueen <craig.mcqueen@innerrange.com> > > > > > --- > > > > > I have found that on the BeagleBone Black, U-Boot occasionally > halts at > > > > > the U-Boot prompt at boot-up, whether power-up, warm external > > > > > reset or software reset. I have seen other people report the same > > > issue. > > > > > > > > > > This seems to be due to U-Boot receiving "junk" data on the serial > > > > > console. The BeagleBone Black has a pull-down resistor which was > > > > > apparently added to try to mitigate this issue, but it doesn't > entirely > > > > > fix it. > > > > > > > > I wonder if this can be fixed for that board only? > > > > > > No, and it's not -exactly- a that board only problem. It's a HW design > > > issue that can show up elsewhere too. I _think_ however in this case > > > the answer would be to migrate to perhaps CONFIG_AUTOBOOT_KEYED_CTRLC > as > > > that's one of the reason various other boards use that set of options. > > > > > > I would suggest bringing this up on the beaglebone list to see what the > > > various people that ship and support these boards think, thanks! > > > > > > > I actually enabled this feature this week by default for beagleboard.org > : > > > > diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig > > index 27cb881..8699953 100644 > > --- a/configs/am335x_evm_defconfig > > +++ b/configs/am335x_evm_defconfig > > @@ -3,7 +3,10 @@ CONFIG_TARGET_AM335X_EVM=y > > CONFIG_SPL_STACK_R_ADDR=0x82000000 > > CONFIG_SPL=y > > CONFIG_SPL_STACK_R=y > > -CONFIG_SYS_EXTRA_OPTIONS="NAND" > > +CONFIG_AUTOBOOT_KEYED=y > > +CONFIG_AUTOBOOT_PROMPT="Press SPACE to abort autoboot in %d seconds\n" > > +CONFIG_AUTOBOOT_DELAY_STR="d" > > +CONFIG_AUTOBOOT_STOP_STR=" " > > # CONFIG_CMD_IMLS is not set > > # CONFIG_CMD_FLASH is not set > > CONFIG_CMD_GPIO=y > > > > It'll take time to replace older images but on target users can just: > > > > cd /opt/scripts/tools/developers/ > > git pull > > sudo ./update_bootloader.sh > > > > U-Boot SPL 2016.01-00001-g4eb802e (Jan 13 2016 - 11:14:31) > > Trying to boot from MMC > > bad magic > > > > > > U-Boot 2016.01-00001-g4eb802e (Jan 13 2016 - 11:14:31 -0600), Build: > > jenkins-github_Bootloader-Builder-313 > > > > Watchdog enabled > > I2C: ready > > DRAM: 512 MiB > > Reset Source: Global external warm reset has occurred. > > Reset Source: Power-on reset has occurred. > > MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 > > Using default environment > > > > Net: <ethaddr> not set. Validating first E-fuse MAC > > cpsw, usb_ether > > Press SPACE to abort autoboot in 2 seconds > > => > > Space eh? OK. Now would be the time to push this upstream as the merge > window just opened :) > That seemed like the most common when i looked at it.. grep -R "AUTOBOOT_PROMPT" configs/*defconfig Do you want me to hit all 3 bbb related configs? beagleboard.org uses: am335x_evm_defconfig I know some users use: am335x_boneblack_defconfig am335x_boneblack_vboot_defconfig Regards,
On Thu, Jan 14, 2016 at 11:56:29AM -0600, Robert Nelson wrote: > On Thu, Jan 14, 2016 at 11:51 AM, Tom Rini <trini@konsulko.com> wrote: > > > On Thu, Jan 14, 2016 at 11:48:07AM -0600, Robert Nelson wrote: > > > On Thu, Jan 14, 2016 at 11:31 AM, Tom Rini <trini@konsulko.com> wrote: > > > > > > > On Mon, Jan 11, 2016 at 09:59:18AM -0700, Simon Glass wrote: > > > > > Hi Craig, > > > > > > > > > > On 20 December 2015 at 19:07, Craig McQueen > > > > > <craig.mcqueen@innerrange.com> wrote: > > > > > > This is to avoid the boot sequence halting due to initial "junk" > > > > > > received on serial input. > > > > > > > > > > > > Signed-off-by: Craig McQueen <craig.mcqueen@innerrange.com> > > > > > > --- > > > > > > I have found that on the BeagleBone Black, U-Boot occasionally > > halts at > > > > > > the U-Boot prompt at boot-up, whether power-up, warm external > > > > > > reset or software reset. I have seen other people report the same > > > > issue. > > > > > > > > > > > > This seems to be due to U-Boot receiving "junk" data on the serial > > > > > > console. The BeagleBone Black has a pull-down resistor which was > > > > > > apparently added to try to mitigate this issue, but it doesn't > > entirely > > > > > > fix it. > > > > > > > > > > I wonder if this can be fixed for that board only? > > > > > > > > No, and it's not -exactly- a that board only problem. It's a HW design > > > > issue that can show up elsewhere too. I _think_ however in this case > > > > the answer would be to migrate to perhaps CONFIG_AUTOBOOT_KEYED_CTRLC > > as > > > > that's one of the reason various other boards use that set of options. > > > > > > > > I would suggest bringing this up on the beaglebone list to see what the > > > > various people that ship and support these boards think, thanks! > > > > > > > > > > I actually enabled this feature this week by default for beagleboard.org > > : > > > > > > diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig > > > index 27cb881..8699953 100644 > > > --- a/configs/am335x_evm_defconfig > > > +++ b/configs/am335x_evm_defconfig > > > @@ -3,7 +3,10 @@ CONFIG_TARGET_AM335X_EVM=y > > > CONFIG_SPL_STACK_R_ADDR=0x82000000 > > > CONFIG_SPL=y > > > CONFIG_SPL_STACK_R=y > > > -CONFIG_SYS_EXTRA_OPTIONS="NAND" > > > +CONFIG_AUTOBOOT_KEYED=y > > > +CONFIG_AUTOBOOT_PROMPT="Press SPACE to abort autoboot in %d seconds\n" > > > +CONFIG_AUTOBOOT_DELAY_STR="d" > > > +CONFIG_AUTOBOOT_STOP_STR=" " > > > # CONFIG_CMD_IMLS is not set > > > # CONFIG_CMD_FLASH is not set > > > CONFIG_CMD_GPIO=y > > > > > > It'll take time to replace older images but on target users can just: > > > > > > cd /opt/scripts/tools/developers/ > > > git pull > > > sudo ./update_bootloader.sh > > > > > > U-Boot SPL 2016.01-00001-g4eb802e (Jan 13 2016 - 11:14:31) > > > Trying to boot from MMC > > > bad magic > > > > > > > > > U-Boot 2016.01-00001-g4eb802e (Jan 13 2016 - 11:14:31 -0600), Build: > > > jenkins-github_Bootloader-Builder-313 > > > > > > Watchdog enabled > > > I2C: ready > > > DRAM: 512 MiB > > > Reset Source: Global external warm reset has occurred. > > > Reset Source: Power-on reset has occurred. > > > MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 > > > Using default environment > > > > > > Net: <ethaddr> not set. Validating first E-fuse MAC > > > cpsw, usb_ether > > > Press SPACE to abort autoboot in 2 seconds > > > => > > > > Space eh? OK. Now would be the time to push this upstream as the merge > > window just opened :) > > > > That seemed like the most common when i looked at it.. > > grep -R "AUTOBOOT_PROMPT" configs/*defconfig > > Do you want me to hit all 3 bbb related configs? > > beagleboard.org uses: am335x_evm_defconfig > > I know some users use: > am335x_boneblack_defconfig > am335x_boneblack_vboot_defconfig Yeah, hit those two as well please. We can ignore the NOR ones since people with a NOR cape likely have their UART hooked up anyhow and that's iirc when the junk is a big problem.
diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig index 27cb881..8699953 100644 --- a/configs/am335x_evm_defconfig +++ b/configs/am335x_evm_defconfig @@ -3,7 +3,10 @@ CONFIG_TARGET_AM335X_EVM=y CONFIG_SPL_STACK_R_ADDR=0x82000000 CONFIG_SPL=y CONFIG_SPL_STACK_R=y -CONFIG_SYS_EXTRA_OPTIONS="NAND" +CONFIG_AUTOBOOT_KEYED=y +CONFIG_AUTOBOOT_PROMPT="Press SPACE to abort autoboot in %d seconds\n" +CONFIG_AUTOBOOT_DELAY_STR="d" +CONFIG_AUTOBOOT_STOP_STR=" " # CONFIG_CMD_IMLS is not set # CONFIG_CMD_FLASH is not set CONFIG_CMD_GPIO=y