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README.arm-relocation: get relocated address from bdinfo

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The bdinfo command prints the relocaddr on ARM as it does
on PPC.

Update the debugging instructions for arm relocation to
reflect this fact rather than requiring that the user
rebuild the u-boot image using -DDEBUG.

Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
CC: Wolfgang Denk <wd@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Ben Gardiner 2011-04-28 06:49:47 +00:00 committed by Wolfgang Denk
parent 5902e8f711
commit f4379ceff0
1 changed files with 21 additions and 30 deletions
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51
doc/README.arm-relocation
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@ -106,13 +106,9 @@ TBC
Debugging u-boot in RAM:
(example on the qong board)
a) add in config.mk:
PLATFORM_CPPFLAGS += -DDEBUG
-----------------
b) start debugger
a) start debugger
arm-linux-gdb u-boot
@ -130,7 +126,7 @@ The target architecture is set automatically (currently arm)
-----------------
c) connect to target
b) connect to target
target remote bdi10:2001
@ -141,7 +137,7 @@ Remote debugging using bdi10:2001
-----------------
d) discard symbol-file
c) discard symbol-file
(gdb) symbol-file
Discard symbol table from `/home/hs/celf/u-boot/u-boot'? (y or n) y
@ -150,7 +146,7 @@ No symbol file now.
-----------------
e) load new symbol table:
d) load new symbol table:
(gdb) add-symbol-file u-boot 0x8ff08000
add symbol table from file "u-boot" at
@ -167,28 +163,23 @@ Program received signal SIGSTOP, Stopped (signal).
add-symbol-file u-boot 0x8ff08000
^^^^^^^^^^
get this address from u-boot debug printfs
get this address from u-boot bdinfo command
U-Boot 2010.06-rc2-00009-gf77b8b8-dirty (Jun 22 2010 - 09:43:46)
U-Boot code: A0000000 -> A0058BAC BSS: -> A0061F10
CPU: Freescale i.MX31 at 398 MHz
Board: DAVE/DENX Qong
mon: FFFFFFFF gd->monLen: 00061F10
Top of RAM usable for U-Boot at: 90000000
LCD panel info: 640 x 480, 16 bit/pix
Reserving 600k for LCD Framebuffer at: 8ff6a000
Reserving 391k for U-Boot at: 8ff08000
^^^^^^^^
Reserving 1280k for malloc() at: 8fdc8000
Reserving 24 Bytes for Board Info at: 8fdc7fe8
Reserving 52 Bytes for Global Data at: 8fdc7fb4
New Stack Pointer is: 8fdc7fb0
RAM Configuration:
Bank #0: 80000000 256 MiB
relocation Offset is: eff08000
mon: 00058BAC gd->monLen: 00061F10
Now running in RAM - U-Boot at: 8ff08000
^^^^^^^^
=> bdinfo
rch_number = XXXXXXXXXX
boot_params = XXXXXXXXXX
DRAM bank = XXXXXXXXXX
-> start = XXXXXXXXXX
-> size = XXXXXXXXXX
ethaddr = XXXXXXXXXX
ip_addr = XXXXXXXXXX
baudrate = XXXXXXXXXX
TLB addr = XXXXXXXXXX
relocaddr = 0x8ff08000
^^^^^^^^^^
reloc off = XXXXXXXXXX
irq_sp = XXXXXXXXXX
sp start = XXXXXXXXXX
FB base = XXXXXXXXXX
Now you can use gdb as usual :-)