Beaglebone Black crashes on u-boot master build.

[Chris Johns]

The crash with a Linux type image and no FDT is:

] ## Booting kernel from Legacy Image at 82000000 ...
]    Image Name:   RTEMS
]    Image Type:   ARM Linux Kernel Image (gzip compressed)
]    Data Size:    60886 Bytes = 59.5 KiB
]    Load Address: 80000000
]    Entry Point:  80000000
]    Verifying Checksum ... OK
]    Uncompressing Kernel Image ... OK
] 
] Starting kernel ...
] 
] data abort
] 
]     MAYBE you should read doc/README.arm-unaligned-accesses
] 
] pc : [<8000010c>]        lr : [<800000ac>]
] sp : 80101000  ip : 0000000c   fp : 9f35ac28
] r10: 9f3ad0f4  r9 : 00000000   r8 : 9f238f40
] r7 : 00000000  r6 : 80000100   r5 : 00000e05  r4 : 60000193
] r3 : 9f238fe0  r2 : 80000100   r1 : 00000e05  r0 : 60000193
] Flags: nzcv  IRQs off  FIQs on  Mode SVC_32
] Resetting CPU ...

and the code is:

BSP_START_TEXT_SECTION void bsp_start_hook_0(void)
{
}
80000104:       e12fff1e        bx      lr

80000108 <bsp_start_hook_1>:
BSP_START_TEXT_SECTION static inline arm_a8core_start_set_vector_base(void)
{
  /*
   * Do not use bsp_vector_table_begin == 0, since this will get optimized away.
  */
  if (bsp_vector_table_end != bsp_vector_table_size) {
80000108:       e3002040        movw    r2, #64 ; 0x40
8000010c:       e3003040        movw    r3, #64 ; 0x40
80000110:       e3482000        movt    r2, #32768      ; 0x8000
80000114:       e3403000        movt    r3, #0
80000118:       e1520003        cmp     r2, r3

[Chris Johns]

My u-boot is the original one that comes with the board. I am working out how to get a new one to boot from an SD Card

[Chris Johns]

The SD card requires you position the SPL (MLO) and u-boot image in specific locations to boot:

dd if=MLO        of=sdcard.img count=1 seek=1 conv=notrunc bs=128k
dd if=u-boot.img of=sdcard.img count=2 seek=1 conv=notrunc bs=384k

The SD card can be formatted with anything.

[Sebastian Huber]

Milestone renamed

[Joel Sherrill]

There is a work around. If broken again, someone can reopen or file a new ticket.