How to wake up ARM and load code ?

olcay davut

Other Parts Discussed in Thread: TCI6638K2K

We use uboot for initialize TCI6638K2K and we have 2 Keystone Device connected via Hyperlink.

Uboot is used for first device. Secondary device initialize from first device with Hyperlink boot.

But uboot has more complex initialize and we neednt use it. we need pure boot include pll, ddr, arm mode settings for initialize and run any code at master ARM core in second device.

Are there any initilaize project different from uboot for ARM ?

Thanks

over 10 years ago

0 Raja over 10 years ago

TI__Guru* 81335 points

Hi ODC,

Please find the ARM boot examples from below link. You shall use those as reference and build it for K2K.

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/375444/1321633.aspx#1321633

Thank you.

0 olcay davut over 10 years ago in reply to Raja

Intellectual 560 points

Thanks for your reply

I guess I complated my pll and ddr init because I can access ext. memory from emulator.

But when I load the elf file, program counter cant arrive start address and in lower left side of CCS "Undefined instruction exception occured" is written.

How can I change appropriate instruction set ?

Thanks

0 Raja over 10 years ago in reply to olcay davut

TI__Guru* 81335 points

Hi ODC,

Please ensure to select the GNU compiler for building ARM project.

Thank you.

0 olcay davut over 10 years ago in reply to Raja

Intellectual 560 points

I think it is not related with compiler because, we have two SoC our own card. First SoC has nor and nand flash and First SoC's ARM can be wake up correctly. We already use GNU compiler!

But second SoC hasnt nor or nand flash so we cannot use u-boot for initialize ARM mode. We use .gel file and it can initialize DSPs PLLs and DDRs settings but not enough for initialize ARM. We can load code but cannot run it. As a mentioned before, in lower left side of CCS "Undefined instruction exception occured" is written.

Ithink I should change ARM mode.

Do you have absolute recomendation ?

Thanks

0 Raja over 10 years ago in reply to olcay davut

TI__Guru* 81335 points

Hi,

Have you tried loading the u-boot from CCS? Refer below link for more information.

http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Exploring#Loading_and_Running_U-Boot_on_EVM_through_CCS

Thank you.

0 olcay davut over 10 years ago in reply to Raja

Intellectual 560 points

Actually we cannot use uboot because there is no nor or nand flash in second SoC side. So we want to use pure boot such as .gel file but not enough for run arm cores. I tried to change CPSR register of ARM to privillage mode, then I tried to load code, I saw PC is brunched but arm cannot run correctly. I think there is Arm initialize problem. I wonder that how the uboot impact arms regarding changing mode or making convenient to load and run codes?

Thanks

0 Raja over 10 years ago in reply to olcay davut

TI__Guru* 81335 points

Hi,

What is the boot mode used for ARM? What is pure boot such as .gel file?

By default ARM core 0 is enabled. After u-boot prompt up, first power up the other core using "mon_power" command and then connect it to CCS. Please refer the boot monitor source from MCSDK explore wiki page for more information.

For example, ( for ARM core 3 )

#tftpboot 0x0c5f0000 skern-keystone-evm.bin

#mon_install 0x0c5f0000

#mon_power 3 1

Thank you.

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How to wake up ARM and load code ?