Issue booting RPI2 B (v1.2) [V1.2 is BVM2837 and quad-core Cortex-A53 based]

[Mark Millard]

On 2016-Oct-20, at 12:08 PM, Mark Millard <markmi at dsl-only.net> wrote:

> On 2016-Oct-20, at 11:22 AM, Kris Moore <krisat ixsystems.com> wrote:
> 
>> I've been toying around with a bunch of RPI2's here (using
>> 11.0-RELEASE), and so far so good. However I just ordered a new batch of
>> them and they all get stuck at the "rainbow" screen. After further
>> investigation, I noticed that they were marked as "Raspberry Pi 2 Model
>> B V1.2", and all my other units are V1.1. Just for kicks, I tried
>> rasbian, and that works fine.
>> 
>> Is this possibly an issue with U-Boot being too old for this revision?
>> Any other ideas?
>> 
>> 
>> -- 
>> Kris Moore
>> iXsystems
>> Enterprise Storage & Servers Driven By Open Source
> 
> https://www.element14.com/community/community/raspberry-pi/raspberrypi2 says:
> 
>> Raspberry Pi 2 Model B v1.2
> 
>> Previous versions of Raspberry Pi 2 Model B use the BCM2836 SoC, which contains a quad-core ARM Cortex-A7 processor. The Raspberry Pi 2 Model B v1.2 board uses BCM2837, which contains a quad-core ARM Cortex-A53 processor. It is necessary to update to the latest (October 2016) version of the device firmware and Linux kernel to allow the board to boot up properly.
> 
> ===
> Mark Millard
> markmi at dsl-only.net

It is listed as out of stock but http://www.mcmelectronics.com/product/83-17791 agrees in its description:

> The Raspberry Pi 2 V1.2 is a single-board computer developed in the UK by the Raspberry Pi Foundation.
> 
> . . . 
> 
> The updated Raspberry Pi 2 Model B is designed around the Broadcom BCM2837 SoC (same as the Pi 3) Quad Core ARMv8 processor running at 900 MHz just like the original Pi 2. The rest of the board is identical to the original, featuring a VideoCore IV GPU, 1 Gigabyte of RAM, 4 USB ports, and 40 GPIO pins for expansion. 
> 
> Please note:Previous versions of Raspberry Pi 2 Model B use the BCM2836 SoC, which contains a quad-core ARM Cortex-A7 processor. The Raspberry Pi 2 Model B v1.2 board uses BCM2837, which contains a quad-core ARM Cortex-A53 processor. It is necessary to update to the latest (October 2016) version of the device firmware and Linux kernel to allow the board to boot up properly
> 
> Board Specifications
> 
> 	• Processor: Quad-core BCM2837 ARMv8 CPU running at 900Mhz
> 	• USB: Four USB 2.0 Ports
> 	• Ethernet: 10/100 Ethernet Port
> 	• Video Output: HDMI and Composite
> 	• Sound: L/R Stereo 
> 	• Memory: 1GB Ram 
> 	• Operating System: Uses microSD card slot to load O/S (Sold Separately, Software cane be found here)
> 	• Digital interfaces: CSi and DSi ribbon cable ports
> 	• GPIO: 40 GPIO pins, backwards compatible to B and B+ board

I know that http://ameridroid.com/products/raspberry-pi-2-model-b-1gb-ram 's old page for V1.1 has said "DISCONTINUED" for some time.

===
Mark Millard
markmi at dsl-only.net