IMXRT10xx Flash not initialised correctly when BOOTMODE[1:0]=2b00 and BT_FUSE_SEL=1

When bootmode is 0 and BT_FUSE_SEL=1 the device will try to boot from the selected boot device (Pg 198 of imxRT1060 Proc Ref Manual Rev 3 07/2021). That doesn't end well at the moment;

$ blackmagic -tv5
<snip>
CPUID 0x411fc271 (M7 var 1 rev 1)
Calling kinetis_probe
dap_read_single failed (fault = 0)
dap_read_single failed (fault = 0)
Calling imxrt_probe
i.MXRT boot mode is 0
i.MXRT boot config is 00000000
-> booting from SPI Flash (FlexSPI)
Writing new instruction seqeunce to slot 0
0: 04 9f
1: 24 00
2: 00 00
3: 00 00
4: 00 00
5: 00 00
6: 00 00
7: 00 00
SPI Flash: mfr = 00, type = 00, capacity = 00000001
Writing new instruction seqeunce to slot 1
0: 04 5a
1: 08 18
2: 30 08
3: 24 00
4: 00 00
5: 00 00
6: 00 00
7: 00 00
8 byte SFDP read at 0x0:
    00 00 00 00 00 00 00 00
Flash size: 0MiB
  1 0xe0001000: Generic IP component - Cortex-M3 DWT (Data Watchpoint and Trace) (PIDR = 0x00000004000bb002  DEVTYPE = 0x00 ARCHID = 0x0000)
  2 0xe0002000: Generic IP component - Cortex-M7 FBP (Flash Patch and Breakpoint) (PIDR = 0x00000004000bb00e  DEVTYPE = 0x00 ARCHID = 0x0000)
  3 0xe0000000: Generic IP component - Cortex-M3 ITM (Instrumentation Trace Module) (PIDR = 0x00000004000bb001  DEVTYPE = 0x00 ARCHID = 0x0000)
  4 Entry 0xfff41002 -> Not present
  5 Entry 0xfff42002 -> Not present
  ROM: Table END
<snip>

I think when bootmode=0 the correct bootmode needs to be read from the BOOT_CFG1[7:4] fuses.

blackmagic-debug / blackmagic

IMXRT10xx Flash not initialised correctly when BOOTMODE[1:0]=2b00 and BT_FUSE_SEL=1 #1485