Clearly something is out of place, but I cannot immediately figure out what to do next. Any suggestions?
Your UMA is conflicting with your Coreboot tables. It is at least part of the problem.
uma_memory_start=0x70000000, uma_memory_size=0x10000000 coreboot memory table: 0. 0000000000000000-0000000000000fff: CONFIGURATION TABLES 1. 0000000000001000-000000000009ffff: RAM 2. 00000000000c0000-000000006fffffff: RAM 3. 0000000070000000-000000007fffffff: RESERVED Wrote coreboot table at: 7fffe000 - 7fffe8bc checksum 3af4
Since your UMA is 0x70000000-0x7fffffff, your Coreboot tables should end up at 6fffe000, not 7fffe000.
Thanks, Myles