About Stanislav Silnicki

Stanislav Silnicki · 2023-11-18

Hello! Although, the OS is not supported, I'd be happy to get any clues on my relatively generic question.I have realized, that TEX remapping registers (PRRR and NMRR) values are hardcoded in Linux kernel source..equ NMRR, 0x40e040e0I'm particularly...

Stanislav Silnicki · 2023-10-24

Hello! Is it feasible to start FBSD kernel?So far I stuck with following error (seems to be from tf-a): Loading kernel... /boot/kernel/kernel text=0x1b4 text=0x5ad698 text=0x17e3d0 data=0xa4860 data=0x0+0x20c000 0x4+0x88d70+0x4+0xea43b| Loading conf...

Stanislav Silnicki · 2022-12-26

processing full erase cycle helps, but still have no idea, why device enters such condition!Please help!

Stanislav Silnicki · 2021-08-02

BTW, Errata says nothing about this mess.

Stanislav Silnicki · 2017-12-07

Posted on December 07, 2017 at 19:21Hi!I'm facing a problem with flashing my firmware into dedicated sectors of MCU.Memory layout I use is following (link script fragment):/* Specify the memory areas */MEMORY{FRAM (xrw) : ORIGIN = 0x20000000, L...

Stanislav Silnicki · 2023-10-27

it looks like default page builder code for PA->VA translation, implemented by the kernel conflicts with what mmu tolerates.../usr/src/sys/arm/arm/locore-v6.S: /* * First map the entire 4GB address space as VA=PA. It's mapped as * normal (cache...

Stanislav Silnicki · 2023-10-26

It looks like FreeBSD kernel is not allowed to enable MMU... why?ASENTRY_NP(init_mmu) .... /* Enable MMU */ mrc CP15_SCTLR(r0) orr r0, r0, #CPU_CONTROL_MMU_ENABLE orr r0, r0, #CPU_CONTROL_V6_EXTPAGE orr r0, r0, #CPU_CONTROL_TR_ENABLE orr r0, r0...

Stanislav Silnicki · 2021-08-02

I have rearranged the code to init PG10 as MCO, enabling GPIOG clocks as well. And no result at all. PG10 just keeps high. The other pin (PA8) functions well for MCO.

Stanislav Silnicki · 2021-08-02

Disabling NRST function for the PG10 pin in FLASH_OPTR doesn't help. While reset function is disabled, and pin assigned to GPIO, MCO doesn't appear at all....Its is so frustrating.... we spent a lot for design and now we eat this. :(

Stanislav Silnicki · 2017-12-07

Posted on December 08, 2017 at 01:25Looks like it worked.the key problem was here (found in startup.s code):/* Call the clock system intitialization function.*/ bl SystemInit /* Call static constructors */ bl __libc_init_array/* Call the applic...

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FreeBSD port in progress

FreeBSD Port for mp157C

Hi! I've got a very strange behaviour of stm32g431. Sometimes, when I plug my device into USB port, it doesn't start, becoming completely non-functional. When I try to reprogram it, openocd shows that device is protected

How can it be? Datasheet, as well as CubeMX allow to set alternate function (MCO) for PG10 pin (Stm32g431KBTx LQFP32) while STM's driver does not?!!!

Stm32F411 Software DFU (STM32CubeMX based)

Re: FreeBSD Port for mp157C

Re: FreeBSD Port for mp157C

Re: How can it be? Datasheet, as well as CubeMX allow to set alternate function (MCO) for PG10 pin (Stm32g431KBTx LQFP32) while STM's driver does not?!!!

Re: How can it be? Datasheet, as well as CubeMX allow to set alternate function (MCO) for PG10 pin (Stm32g431KBTx LQFP32) while STM's driver does not?!!!

Re: Stm32F411 Software DFU (STM32CubeMX based)