Hi All,
I am new to U-boot. Currently, I am working on developing U-boot for a new
SOC. The SOC has arm926ej-s as the core and is implemented on Xilinx FPGA
with SD-card as the boot device. With current setup DDR is already
initialized by FPGA and SD card can be accessed using direct addressing. We
have added board files and SoC related files to the Uboot directory and is
able to successfully compile and get some outputs on UART (debug console).
Currently, we have added only support for GPIO and UART drivers.
SD Card : 0x00000000 - 0x007FFFFF
SRAM : 0x90000000 - 0x90007FFF
DDR : 0x40000000 - 0x43FFFFFF
We are facing some issue with the uboot booting. We are able to see the
initial uboot prints and debug prints when the stack pointer is in SRAM,
but after we relocate the code from SD card to DDR and change the stack
pointer to DDR we are getting junk prints on the console. Can anyone help
me or suggest me what we are doing wrong here? Thanks in advance for your
help.
Please see the below UART Log:
initcall: 00005cdc
initcall: 00009a84
initcall: 00005ccc
initcall: 00005fbc
initcall: 000060c0
initcall: 00000418
initcall: 00006090
initcall: 00005fb4
malloc_simple: size=18, ptr=18, limit=400: 90000b30
malloc_simple: size=54, ptr=6c, limit=400: 90000b48
malloc_simple: size=4, ptr=70, limit=400: 90000b9c
uclass_find_device_by_seq: 0 -1
uclass_find_device_by_seq: 0 0
- -1 -1 'root_driver'
- not found
initcall: 00006088
initcall: 000010b0
initcall: 000004a8
initcall: 0000f77c
env_init: Environment nowhere init done (ret=0)
initcall: 00005f88
initcall: 0000f0dc
initcall: 000147c0
U-Boot 2018.09 (Nov 01 2018 - 18:33:40 +0530)
initcall: 00005eac
U-Boot code: 00000000 -> 00024604 BSS: -> 00030608
initcall: 00000438
CPU: SoC Version 0.01
CPU clock: 75MHz
SDRAM clock: 75MHz
initcall: 00006470
initcall: 00005f70
DRAM: initcall: 000010ec
SDRAM Reg 000 : ffffffff
EDAC Reg 004 : ffffffff
SDRAM Reg 100 : ffffffff
EDAC Reg 104 : ffffffff
EMC Reg : 1ff
initcall: 00006178
Monitor len: 00030608
Ram size: 04000000
gd->relocaddr : 44000000
Ram top: 44000000
initcall: 00005cfc
initcall: 00006098
initcall: 00005d14
initcall: 000060a0
initcall: 00005e44
Reserving 193k for U-Boot at: 43fcf000
initcall: 00005e18
Reserving 1152k for malloc() at: 43eaf000
initcall: 00005f1c
Reserving 80 Bytes for Board Info at: 43eaefb0
initcall: 000060a8
initcall: 00005de4
Reserving 200 Bytes for Global Data at: 43eaeee8
initcall: 00005d5c
initcall: 000060b0
initcall: 000060c8
initcall: 000061f4
gd->relocaddr : 43FCF000
initcall: 00005d1c
initcall: 000060dc
RAM Configuration:
Bank #0: 40000000 64 MiB
DRAM: 64 MiB
initcall: 00005d40
New Stack Pointer is: 43eaeec0
initcall: 00005ed8
initcall: 000060b8
initcall: 00005fd0
__image_copy_start : 00000000
__image_copy_end : 00024604
gd copied successfully to new gd...
Relocation Offset is: 43fcf000
Relocating to Addr 43fcf000, new gd at 43eaeee8, sp at 43eaeec0
Current Stack Pointer 90000a60
rrrr
ccccooooeeee4444eeeettttllll44445555ttttllll44445555ttttllll00006666eeeeaaaa
44445555))))ENABLE CACHESWARNING: Caches not enabled
ttttllll00006666eeeeaaaa 44445555))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa 44445555))))----ooooaaaaccccuuuu
7777tttt((((BBBBnnnneeeeyyyy4444ffff----4444ffffffffmmmmoooo
44449999----44449999
ttttllll00005555eeeeaaaa 44444444))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa
44445555))))aaaaffff____iiiibbbbeeee0000
aaaaffff____iiiibbbbeeee0000----
''''ttttiiii''''----ttttuuuuttttllll00001111eeeeaaaa
44440000))))IIII::::aaaaiiii
ttttllll0000aaaaeeeeaaaa 44449999))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa 44445555)))) nnnn
RRRR----BBBB 4444ffffttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa 44445555))))MMC:
ttttllll00006666eeeeaaaa 44445555))))nnnneeeellllnnnnoooonnnniiiimmmm
oooommmmccccNNNNooooccccaaaa
::::ooooddddhhhhoooooooooooonnnniiiiEEEE::::ooooddddhhhhoooooooooooonnnntttt
hhhhbbbb 44442222bbbb====00000000aaaaHHHH llllNNNN
eeeebbbb,,,,llll::::eeee BBBB mmmmeeeebbbb,,,,dddd::::eeee
BBBB mmmmEEEE llll44442222 llll1111 4444ffff eeeeoooo
uuuueeee BBBB mmmm""""EEEE eeeetttt 4444ffffEEEE
eeeettttllll00006666eeeeaaaa 44445555))))ttttllll0000aaaaeeeeaaaa
44449999))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00008888eeeeaaaa 44447777))))In: iiii4444ffff
Out: iiii4444ffff
Err: iiii4444ffff
tttt uuuuoooorrrr3333aaaaaaaa cccctttt
uuuuoooorrrr3333aaaaaaaa cccctttt uuuuoooorrrr3333aaaaaaaa
ccccttttllll0000ddddeeeeaaaa 4444ffff))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa
44445555))))ttttllll00006666eeeeaaaa 44445555))))Net:
ttttiiiiiiiiSSSSppppNo ethernet found.
ttttllll00006666eeeeaaaa 44445555))))tttt
uuuuoooorrrr3333aaaaaaaa cccc nnnnoooonnnneeeebbbbddddyyyy
nnnnoooobbbbcccc""""DDDDNNNN""""Uboot >
Uboot >
Uboot >
Uboot >
Uboot >
Uboot >
Uboot >
Uboot >
Regards,
Shekhar S
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