Hi Jarkko,
On 6/06/23 21:39, Jarkko Sakkinen wrote:
> On Sun, 2023-05-28 at 23:42 +0000, Chris Packham wrote:
>> Hi,
>>
>> We have an embedded product with an Infineon SLM9670 TPM. After updating
>> to a newer LTS kernel version we started seeing the following warning at
>> boot.
>>
>> [ 4.741025] ------------[ cut here ]------------
>> [ 4.749894] irq 38 handler tis_int_handler+0x0/0x154 enabled interrupts
>> [ 4.756555] WARNING: CPU: 0 PID: 0 at kernel/irq/handle.c:159
>> __handle_irq_event_percpu+0xf4/0x180
>> [ 4.765557] Modules linked in:
>> [ 4.768626] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.113 #1
>> [ 4.774747] Hardware name: Allied Telesis x250-18XS (DT)
>> [ 4.780080] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS
>> BTYPE=--)
>> [ 4.787072] pc : __handle_irq_event_percpu+0xf4/0x180
>> [ 4.792146] lr : __handle_irq_event_percpu+0xf4/0x180
>> [ 4.797220] sp : ffff800008003e40
>> [ 4.800547] x29: ffff800008003e40 x28: ffff8000093951c0 x27:
>> ffff80000902a9b8
>> [ 4.807716] x26: ffff800008fe8d28 x25: ffff8000094a62bd x24:
>> ffff000001b92400
>> [ 4.814885] x23: 0000000000000026 x22: ffff800008003ec4 x21:
>> 0000000000000000
>> [ 4.822053] x20: 0000000000000001 x19: ffff000002381200 x18:
>> ffffffffffffffff
>> [ 4.829222] x17: ffff800076962000 x16: ffff800008000000 x15:
>> ffff800088003b57
>> [ 4.836390] x14: 0000000000000000 x13: ffff8000093a5078 x12:
>> 000000000000035d
>> [ 4.843558] x11: 000000000000011f x10: ffff8000093a5078 x9 :
>> ffff8000093a5078
>> [ 4.850727] x8 : 00000000ffffefff x7 : ffff8000093fd078 x6 :
>> ffff8000093fd078
>> [ 4.857895] x5 : 000000000000bff4 x4 : 0000000000000000 x3 :
>> 0000000000000000
>> [ 4.865062] x2 : 0000000000000000 x1 : 0000000000000000 x0 :
>> ffff8000093951c0
>> [ 4.872230] Call trace:
>> [ 4.874686] __handle_irq_event_percpu+0xf4/0x180
>> [ 4.879411] handle_irq_event+0x64/0xec
>> [ 4.883264] handle_level_irq+0xc0/0x1b0
>> [ 4.887202] generic_handle_irq+0x30/0x50
>> [ 4.891229] mvebu_gpio_irq_handler+0x11c/0x2a0
>> [ 4.895780] handle_domain_irq+0x60/0x90
>> [ 4.899720] gic_handle_irq+0x4c/0xd0
>> [ 4.903398] call_on_irq_stack+0x20/0x4c
>> [ 4.907338] do_interrupt_handler+0x54/0x60
>> [ 4.911538] el1_interrupt+0x30/0x80
>> [ 4.915130] el1h_64_irq_handler+0x18/0x24
>> [ 4.919244] el1h_64_irq+0x78/0x7c
>> [ 4.922659] arch_cpu_idle+0x18/0x2c
>> [ 4.926249] do_idle+0xc4/0x150
>> [ 4.929404] cpu_startup_entry+0x28/0x60
>> [ 4.933343] rest_init+0xe4/0xf4
>> [ 4.936584] arch_call_rest_init+0x10/0x1c
>> [ 4.940699] start_kernel+0x600/0x640
>> [ 4.944375] __primary_switched+0xbc/0xc4
>> [ 4.948402] ---[ end trace 940193047b35b311 ]---
>>
>> Initially I dismissed this as a warning that would probably be cleaned
>> up when we did more work on the TPM support for our product but we also
>> seem to be getting some new i2c issues and possibly a kernel stack
>> corruption that we've conflated with this TPM warning.
> Hi, sorry for late response. I've been moving my (home) office to
> a different location during last couple of weeks, and email has been
> piling up.
>
> What does dmidecode give you?
>
> More specific, I'm interested on DMI type 43:
>
> $ sudo dmidecode -t 43
> # dmidecode 3.4
> Getting SMBIOS data from sysfs.
> SMBIOS 3.4.0 present.
>
> Handle 0x004D, DMI type 43, 31 bytes
> TPM Device
> Vendor ID: INTC
> Specification Version: 2.0
> Firmware Revision: 600.18
> Description: INTEL
> Characteristics:
> Family configurable via platform software support
> OEM-specific Information: 0x00000000
>
> BR, Jarkko
This is an embedded ARM64 (Marvell CN9130 SoC) device so no BIOS. The
relevant snippet from the device tree is
tpm@1 {
compatible = "infineon,slb9670";
reg = <1>; /* Chip select 1 */
interrupt-parent = <&cp0_gpio2>;
interrupts = <30 IRQ_TYPE_LEVEL_LOW>;
spi-max-frequency = <31250000>;
};
and I can tell you that the specific TPM chip is an Infinieon
SLM9670AQ20FW1311XTMA1
