Exception when u-boot tries to read SRAM at 0xff8c1000

gistfile1.txt

=> md.l ff8c1000 1
ff8c1000:"Synchronous Abort" handler, esr 0x96000010
elr: 000000000027a5b4 lr : 000000000027a530 (reloc)
elr: 00000000f7f945b4 lr : 00000000f7f94530
x0 : 0000000000000009 x1 : 0000000000000000
x2 : 000000000000003a x3 : 00000000ff8c1000
x4 : 0000000000000000 x5 : 00000000f7fae6b1
x6 : 0000000000000004 x7 : 00000000f5effe70
x8 : 00000000f5effd30 x9 : 0000000000000008
x10: 00000000ffffffd0 x11: 0000000000000006
x12: 000000000001869f x13: 000000000000dc50
x14: 000000000000dcfc x15: 0000000000000008
x16: 000000007bed4aed x17: 0000000000015280
x18: 00000000f5f11de8 x19: 0000000000000001
x20: 00000000ff8c1000 x21: 00000000ff8c1000
x22: 00000000f7fad3e6 x23: 0000000000000008
x24: 0000000000000001 x25: 0000000000000004
x26: 0000000000000004 x27: 00000000f5effef8
x28: 0000000000000000 x29: 00000000f5effe70

Code: 12800000 17ffffd5 7100135f 540001c1 (b9400062)
Resetting CPU ...