Hi Thomas, It is due to ARMV8_SPL_EXCEPTION_VECTORS not enabled by default in upstream. I will send a patch
Best regards, Ye Li > -----Original Message----- > From: Thomas Schaefer <thomas.schae...@kontron.com> > Sent: Thursday, January 11, 2024 9:40 PM > To: Ye Li <ye...@nxp.com>; Peng Fan (OSS) <peng....@oss.nxp.com>; > 'u-boot@lists.denx.de' <u-boot@lists.denx.de> > Cc: Peng Fan <peng....@nxp.com> > Subject: [EXT] AW: FIELD_RETURN on i.MX8MNANOLPD4 EVK > > Caution: This is an external email. Please take care when clicking links or > opening attachments. When in doubt, report the message using the 'Report this > email' button > > > Hi Ye, > > Yes, I can boot SPL without signature. I also added some debug messages to my > build and I can see that SPL can load u-boot proper via USB until 'Jumping to > U-Boot' message in board_init_r function (common/spl/spl.c) > > Actually this looks like the SError problem caused by errata ERR050350 which > has been worked around in patch 2f3c92060dcd. But that patch is currently > active in u-boot and so I don't understand what the problem is here in this > case. > > Best regards, > Thomas > > -----Ursprüngliche Nachricht----- > Von: Ye Li <ye...@nxp.com> > Gesendet: Donnerstag, 11. Januar 2024 05:09 > An: Peng Fan (OSS) <peng....@oss.nxp.com>; Thomas Schaefer > <thomas.schae...@kontron.com>; 'u-boot@lists.denx.de' > <u-boot@lists.denx.de> > Cc: Peng Fan <peng....@nxp.com> > Betreff: RE: FIELD_RETURN on i.MX8MNANOLPD4 EVK > > [You don't often get email from ye...@nxp.com. Learn why this is important at > https://aka.ms/LearnAboutSenderIdentification ] > > I think there is no particular SW support needed for FIELD_RETURN on 8MN. > From what you described, you have moved the part from closed to > FIELD_RETURN. So are you able to boot into SPL without signature? > > Best regards, > Ye Li > > -----Original Message----- > > From: Peng Fan (OSS) <peng....@oss.nxp.com> > > Sent: Thursday, January 11, 2024 11:51 AM > > To: Thomas Schäfer <thomas.schae...@kontron.com>; 'u-boot@lists.denx.de' > > <u-boot@lists.denx.de>; Ye Li <ye...@nxp.com> > > Cc: Peng Fan <peng....@nxp.com> > > Subject: Re: FIELD_RETURN on i.MX8MNANOLPD4 EVK > > > > +Ye > > > > 在 1/9/2024 4:52 PM, Thomas Schaefer 写道: > > > Hi all, > > > > > > We are trying to enable FIELD RETURN on the NXP i.MX8MNano LPD4 EVK > > board. > > > > > > We enabled Secure Boot in u-boot in the first step. After checking > > > proper > > execution of a signed bootloader image we closed the board blowing the > > SEC_CONFIG fuse. > > > > > > In the next step we created the board specific signature with UID of > > > the CPU > > included to remove the FIELD RETURN lock. After that we were able to > > blow the FIELD_RETURN fuse with 'fuse prog 8 3 0x1' command. But now, > > the board cannot boot any more, it will hang after execution of the SPL > bootloader part. > > > > > > We can observe this behavior with both signed and unsigned > > > bootloader > > images. > > > > > > Is the FIELD_RETURN feature for the i.MX8MNano supported with u-boot > > v2024.01? > > > > > > Best regards, > > > Thomas > > > > > > > > > Thomas Schäfer > > > SW Design Engineer > > > > > > thomas.schae...@kontron.com > > > https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww > > > %2F&data=05%7C02%7Cye.li%40nxp.com%7C060b2d6efc44474f6b6308dc1 > 2aad3c > > > > 8%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C6384057721301942 > 54%7C > > > > Unknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6 > Ik > > > > 1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=TH13JrjA5cjqAeIfRAvx > 2Ss1l > > > 4iHQ7Yvbs%2FuQyKrY%2BQ%3D&reserved=0 > > > .kontron.com%2F&data=05%7C02%7Cthomas.schaefer%40kontron.com%7 > C7eb38 > > > > f57a0304f030f2f08dc125b1c74%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0 > %7 > > > > C0%7C638405429733492095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLj > AwMDAi > > > > LCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sd > ata > > > > =nOuWb2NSpPBRl5FaV8xa5MiQZ%2FzE7z8F%2FC2Rfv%2F7yzo%3D&reserved= > 0 > > > > > > > > > > > > > > > Kontron Europe GmbH > > > Heinrich-Barth-Straße 1-1a | 66115 Saarbrücken | Germany