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by joare
Sat Sep 24, 2016 9:34 am
Forum: Bare metal, Assembly language
Topic: Problem reading memory properties on RPi 2
Replies: 3
Views: 987

Re: Problem reading memory properties on RPi 2

That was it, thank you so much! Now, for a followup. When I get the command_line property, it includes the following: vc_mem.mem_base=0x3dc00000 vc_mem.mem_size=0x3f000000 The previously mentioned properties, on the other hand, now show: ARM: base=00000000 size=3b000000 VC: base=3b000000 size=040000...
by joare
Fri Sep 23, 2016 9:31 pm
Forum: Bare metal, Assembly language
Topic: Problem reading memory properties on RPi 2
Replies: 3
Views: 987

Problem reading memory properties on RPi 2

I'm trying to use the VC mailbox property interface to get hold of various system info. When I ask for the ARM and VC memory base / sizes (using the GET_ARM_MEMORY and GET_VC_MEMORY tags), the response says ARM memory is 128MB starting at 0, and VC memory is also 128MB, starting at 0x8000000. As I'm...
by joare
Fri Jan 01, 2016 8:14 pm
Forum: Bare metal, Assembly language
Topic: RPi 2 boots in HYP mode (bare metal)
Replies: 8
Views: 3961

RPi 2 boots in HYP mode (bare metal)

Hello, I recently bought an RPi 2, and set about following the various bare metal tutorials available. After a while, I found dwelch67's excellent collection of examples, specifically "blink05", that goes through the various steps necessary to blink the LED through the use of the IRQ exception handl...

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