IMX6 CAAM kerne panic in non-secure world Linux kernel

myungjinhwang — Thu, 02 Apr 2015 13:21:00 GMT

I modified Linux kernel to work in non-secure world.

Linux version 3.10.17-svn1666 / (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #2 Thu Apr 2 19:43:43 KST 2015

It print kernel panic messages with back-trace when kernel is booting in non-secure.

Exactly, on caam_rng_init process as bellow messages

I dont know what i do now.

I have set the CSU_CSL17 register to 0x00ff00ff so that CAAM can be accessible in both non-secure and secure world.

should I check more CAAM's register like that Secure Memory Access Groups (SMAG) Register, Master Configuration Register (MCFGR) ?

please help me~~~

usb 1-1: new high-speed USB device number 2 using ci_hdrc

platform 2101000.jr0: failed to flush job ring 0

fsl,sec-v4.0-job-ring not found

(ring 0)

caam: probe of 2100000.caam failed with error -5

platform 2100000.caam: dev_get_drvdata failed

mmc1: host does not support reading read-only switch. assuming write-enable.

mmc1: new high speed SDHC card at address 0007

mmcblk0: mmc1:0007 SD4GB 3.70 GiB

mmcblk0: p1

hub 1-1:1.0: USB hub found

hub 1-1:1.0: 3 ports detected

waiting for driver to load

Unable to handle kernel NULL pointer dereference at virtual address 00000014

pgd = c0004000

[00000014] *pgd=00000000

Internal error: Oops: 5 [#1] ARM

Modules linked in:

CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.10.17-svn1666 #3

task: d2046000 ti: d2058000 task.ti: d2058000

PC is at caam_rng_init+0x58/0x214

LR is at caam_rng_init+0x58/0x214

pc : [<c0802c44>] lr : [<c0802c44>] psr: a0000113

sp : d2059ee8 ip : d2059ee8 fp : d2059f0c

r10: 000000c8 r9 : c08174fc r8 : c080f7b8

r7 : c0802bec r6 : c0854ec0 r5 : 00000000 r4 : c0854ec0

r3 : d20a6e00 r2 : 00000001 r1 : 00000000 r0 : 00000000

Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel

Control: 10c53c7d Table: 10004059 DAC: 00000015

Process swapper (pid: 1, stack limit = 0xd2058230)

Stack: (0xd2059ee8 to 0xd205a000)

9ee0: 00000000 c0854ec0 c0854ec0 00000000 c0854ec0 c0802bec

9f00: d2059f54 d2059f10 c0008600 c0802bf8 00000001 c0784170 60000113 c0044028

9f20: c0044000 c10c9e3b d2059f54 c080f7b0 00000007 c0854ec0 c07df648 c080f7b8

9f40: c08174fc 000000c8 d2059f94 d2059f58 c07df59c c00085d0 00000006 00000006

9f60: c07df648 ffffffff ffffffff 00000000 c0611f00 00000000 00000000 00000000

9f80: 00000000 00000000 d2059fac d2059f98 c0611f10 c07df494 00000000 00000000

9fa0: 00000000 d2059fb0 c000ee18 c0611f0c 00000000 00000000 00000000 00000000

9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 ffffffff ffffffff

Backtrace:

[<c0802bec>] (caam_rng_init+0x0/0x214) from [<c0008600>] (do_one_initcall+0x3c/0x174)

r7:c0802bec r6:c0854ec0 r5:00000000 r4:c0854ec0

[<c00085c4>] (do_one_initcall+0x0/0x174) from [<c07df59c>] (kernel_init_freeable+0x114/0x1c0)

[<c07df488>] (kernel_init_freeable+0x0/0x1c0) from [<c0611f10>] (kernel_init+0x10/0xf0)

[<c0611f00>] (kernel_init+0x0/0xf0) from [<c000ee18>] (ret_from_fork+0x14/0x3c)

r4:00000000 r3:00000000

Code: e3500000 0a00006d e2800010 ebed219e (e5902014)

---[ end trace 1b75b31a2719ed1d ]---

Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

topic IMX6 CAAM kerne panic in non-secure world Linux kernel in i.MX Processors

IMX6 CAAM kerne panic in non-secure world Linux kernel