[U-Boot] booting optee via SPL on imx6q

[Shyam Saini]

Hi Peng,

Thanks for replying.

> Did you configure loglevel for OP-TEE? If you configured, there should be some log out from OP-TEE.

Yes, I did. Its set to log level 4.


Best Regards,
Shyam


> > -----Original Message-----
> > From: Shyam Saini [mailto:shyam at amarulasolutions.com]
> > Sent: 2019年1月4日 19:47
> > To: kever.yang at rock-chips.com
> > Cc: u-boot at lists.denx.de; jens.wiklander at linaro.org; Peng Fan
> > <peng.fan at nxp.com>; igor.opaniuk at linaro.org
> > Subject: booting optee via SPL on imx6q
> >
> > Hi Kever,
> >
> > I've been trying to boot optee via SPL on my imx6 board.
> >
> > I see you added booting optee via SPL support in this commit.
> > https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgit.d
> > enx.de%2F%3Fp%3Du-boot.git%3Ba%3Dcommit%3Bh%3D70fe28763529391
> > 94ccd9091379453a5ddb64ddb&data=02%7C01%7Cpeng.fan%40nxp.co
> > m%7C2f8daccc8c104042b9b308d6723a4ddd%7C686ea1d3bc2b4c6fa92cd99
> > c5c301635%7C0%7C1%7C636821992073649506&sdata=28oS2F741k6y
> > AMGRZYpdI8pCidsy32XSPKHh3F48WVw%3D&reserved=0
> >
> > I used fit image to do this. Here is my fit *.its file content
> > https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpast
> > e.ubuntu.com%2Fp%2F5FYkGqswX9%2F&data=02%7C01%7Cpeng.fan%
> > 40nxp.com%7C2f8daccc8c104042b9b308d6723a4ddd%7C686ea1d3bc2b4c6f
> > a92cd99c5c301635%7C0%7C1%7C636821992073659511&sdata=NrY2R
> > RZp6tsve9vE8AO0ZW1KbbOuBHFUE8kJOGhz80c%3D&reserved=0
> >
> > When I power on my imx6 board it hangs on spl_optee_entry function with
> > this message "Jumping to U-Boot via OP-TEE"
> >
> > Here are the complete logs:
> >
> > # logs without reserved TZ RAM
> > https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpast
> > e.ubuntu.com%2Fp%2FwGxXSvPSkS%2F&data=02%7C01%7Cpeng.fan%
> > 40nxp.com%7C2f8daccc8c104042b9b308d6723a4ddd%7C686ea1d3bc2b4c6f
> > a92cd99c5c301635%7C0%7C1%7C636821992073659511&sdata=2R7B
> > GEOl7xmbDNpsPcEn5xJpnkt1Qxg2JFBL82qnYrg%3D&reserved=0
> >
> > # logs with reserved TZ RAM
> > https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpast
> > e.ubuntu.com%2Fp%2F7KgYJx8V9p%2F&data=02%7C01%7Cpeng.fan%4
> > 0nxp.com%7C2f8daccc8c104042b9b308d6723a4ddd%7C686ea1d3bc2b4c6fa
> > 92cd99c5c301635%7C0%7C1%7C636821992073659511&sdata=2fVNXo
> > EfuncIdXFFRNeQcSsk%2FnfzwVSKbaITpj1HLK0%3D&reserved=0
> >
> > I'm not sure why is it hanging. But when i put some print statements in optee
> > os it doesn't print, so i guess something wrong from SPL side.
> >
> > One more question, what is the significance of "mov pc, r3", here
> > https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgit.d
> > enx.de%2F%3Fp%3Du-boot.git%3Ba%3Dblob%3Bf%3Dcommon%2Fspl%2Fspl
> > _optee.S%3Bh%3D86fc3985465b4e4f6cf300923b0f8d6564e8be64%3Bhb%3
> > D70fe2876352939194ccd9091379453a5ddb64ddb&data=02%7C01%7C
> > peng.fan%40nxp.com%7C2f8daccc8c104042b9b308d6723a4ddd%7C686ea1d
> > 3bc2b4c6fa92cd99c5c301635%7C0%7C1%7C636821992073659511&sd
> > ata=gu3VtK1m%2BMeGPwV8qJKxkOYLgEAMFcYSBpel5ZjV%2FG4%3D&r
> > eserved=0
> >
> > I compiled optee os with CFG_NS_ENTRY_ADDR=0x17800000  i.e, u-boot
> > load address in my case.
> >
> > Do you know what am i missing?
> >
> > I'd really appreciate any help from you.
> >
> >
> > Thanks a lot,
> > Shyam



-- 
Shyam Saini
Linux Kernel Engineer | Amarula Solutions
Linux Netfilter Contributor | FOSS Enthusiast
Hyderabad, India.