Date: Fri, 25 Jan 2013 13:10:05 +0100 From: Aleksander Dutkowski <adutkowski@gmail.com> To: freebsd-ppc@freebsd.org Subject: OpenFirmware issue on P1010 Message-ID: <CABkKHSZ=GGh0FQ%2BG7cvHHhiBmJuGhhgLd5iWAActw8pdqk%2BV-w@mail.gmail.com>
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hi!
I am porting FreeBSD on P1010RDB platform. I modified existing MPC85XX
config (i.e. removed SMP), created p1010rdb.dts from p1020rdb.dts etc,
and ran the kernel via u-boot:
tftp 0x1000000 fbsd.elf
go 0x10000e0
Nothing happened, so I used CodeWarrior IDE with CW USB Tap, and it
turned out, that OF_install() call in sys/powerpc/booke/machedp.c
returns false. I inspected this function and moreover, I inspected the
structure, which is pointer from set_ofw_set linker set:
$ powerpc-rtems-objdump -s kernel | grep set_ofw_set
Contents of section set_ofw_set:
c03694f0 c037ab54 .7.T
(gdb) p (ofw_def_t)*0xc037ab54
$1 = {name = 0xc03339a4 "ofw_fdt", methods = 0xc0319350, size = 0,
baseclasses = 0x0, refs = 0, ops = 0x0}
As we can se, name field is correct. But this function seems to fail
in strcmp().
I have found the issue [1] on bugtracker, so Im quite sure, that the
problem is ith linker sets on powerpc (but this issue is quite old now
;) ), but the fix is not working for me - it crashes while compiling:
cc -c -O -pipe -std=c99 -Wa,-me500 -g -Wall -Wredundant-decls
-Wnested-externs -Wstrict-prototypes -Wmissing-prototypes
-Wpointer-arith -Winline -Wcast-qual -Wundef -Wno-pointer-sign
-fformat-extensions -Wmissing-include-dirs -fdiagnostics-show-option
-nostdinc -I. -I/usr/home/aleek/src/p1010-github/sys
-I/usr/home/aleek/src/p1010-github/sys/contrib/altq
-I/usr/home/aleek/src/p1010-github/sys/contrib/libfdt -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common
-finline-limit=15000 --param inline-unit-growth=100 --param
large-function-growth=1000 -msoft-float -Wa,-many
-fno-omit-frame-pointer -msoft-float -mno-altivec -ffreestanding
-fstack-protector -Werror
/usr/home/aleek/src/p1010-github/sys/dev/ofw/openfirm.c
cc1: warnings being treated as errors
/usr/home/aleek/src/p1010-github/sys/dev/ofw/openfirm.c: In function
'OF_install':
/usr/home/aleek/src/p1010-github/sys/dev/ofw/openfirm.c:126: warning:
assignment from incompatible pointer type
/usr/home/aleek/src/p1010-github/sys/dev/ofw/openfirm.c:126: warning:
comparison of distinct pointer types lacks a cast
Do you have any idea, how to fix this?
[1] http://www.freebsd.org/cgi/query-pr.cgi?pr=140241
--
regards
aleek
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