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Olaf Hering 6088857b16 [PATCH] correct the comment about stackpointer alignment in __boot_from_prom 
The address of variable val in prom_init_stdout is passed to prom_getprop.
prom_getprop casts the pointer to u32 and passes it to call_prom in the hope
that OpenFirmware stores something there.
But the pointer is truncated in the lower bits and the expected value is
stored somewhere else.

In my testing I had a stackpointer of 0x0023e6b4. val was at offset 120,
wich has address 0x0023e72c. But the value passed to OF was 0x0023e728.

c00000000040b710:       3b 01 00 78     addi    r24,r1,120
...
c00000000040b754:       57 08 00 38     rlwinm  r8,r24,0,0,28
...
c00000000040b784:       80 01 00 78     lwz     r0,120(r1)
...
c00000000040b798:       90 1b 00 0c     stw     r0,12(r27)
...

The stackpointer came from 32bit code.
The chain was yaboot -> zImage -> vmlinux

PowerMac OpenFirmware does appearently not handle the ELF sections
correctly.  If yaboot was compiled in
/usr/src/packages/BUILD/lilo-10.1.1/yaboot, then the stackpointer is
unaligned. But the stackpointer is correct if yaboot is compiled in
/tmp/yaboot.

This bug triggered since 2.6.15, now prom_getprop is an inline
function. gcc clears the lower bits, instead of just clearing the
upper 32 bits.

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27 14:48:32 +11:00
..
vdso32 [PATCH] powerpc: Add some missing .gitignore's 2006-01-11 15:35:35 +11:00
vdso64 [PATCH] powerpc: vdso 64bits gettimeofday bug 2006-02-28 16:25:54 +11:00
align.c [PATCH] powerpc: merge align.c 2005-11-18 14:39:23 +11:00
asm-offsets.c Merge ../linux-2.6 2006-03-09 14:32:05 +11:00
binfmt_elf32.c
btext.c [PATCH] powerpc: Remove device_node addrs/n_addr 2006-01-09 14:53:55 +11:00
cpu_setup_power4.S [PATCH] powerpc: Cleanup LOADADDR etc. asm macros 2006-01-13 21:16:23 +11:00
cputable.c Merge ../linux-2.6 2006-03-09 14:32:05 +11:00
crash.c [PATCH] powerpc: Trivial fix to set the proper timeout value for kdump 2006-02-24 11:36:21 +11:00
crash_dump.c powerpc: Fix compile error when CONFIG_PROC_VMCORE is not defined 2006-01-11 15:30:07 +11:00
dma_64.c [PATCH] powerpc: IBMEBUS bus support 2006-01-09 14:49:06 +11:00
entry_32.S powerpc: Fix various syscall/signal/swapcontext bugs 2006-03-08 13:24:22 +11:00
entry_64.S Merge ../linux-2.6 2006-03-09 14:32:05 +11:00
firmware.c [PATCH] powerpc: Move pSeries firmware feature setup into platforms/pseries 2006-02-10 16:52:03 +11:00
fpu.S powerpc/64: Fix bug in setting floating-point exception mode 2006-02-07 13:55:30 +11:00
head_4xx.S
head_8xx.S [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
head_32.S [PATCH] powerpc: fix altivec_unavailable_exception Oopses 2006-02-24 11:36:23 +11:00
head_44x.S [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
head_64.S [PATCH] correct the comment about stackpointer alignment in __boot_from_prom 2006-03-27 14:48:32 +11:00
head_booke.h [PATCH] powerpc: Fix Kernel FP unavail exception for BookE 2006-02-10 16:51:50 +11:00
head_fsl_booke.S [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
ibmebus.c [PATCH] powerpc: IBMEBUS bus support 2006-01-09 14:49:06 +11:00
idle_6xx.S
idle_64.c powerpc: Move remaining .c files from arch/ppc64 to arch/powerpc 2005-11-18 15:43:34 +11:00
idle_power4.S [PATCH] powerpc: Cleanup LOADADDR etc. asm macros 2006-01-13 21:16:23 +11:00
init_task.c
iomap.c [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
iommu.c [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
irq.c [PATCH] more for_each_cpu() conversions 2006-03-23 07:38:17 -08:00
kprobes.c [PATCH] kprobes: fix broken fault handling for powerpc64 2006-03-26 08:57:04 -08:00
legacy_serial.c [PATCH] powerpc: fix various sparse warnings 2006-03-27 14:48:08 +11:00
lparcfg.c [PATCH] powerpc: Fix OOPS in lparcfg on G5 2006-02-20 10:44:34 +11:00
lparmap.c [PATCH] powerpc: Fix iSeries bug in VMALLOCBASE/VMALLOC_START consolidation 2006-01-09 15:06:06 +11:00
machine_kexec.c [PATCH] powerpc: remove remaining crash_notes variable from machine_kexec.c 2006-01-11 14:48:02 +11:00
machine_kexec_32.c [PATCH] powerpc: Merge kexec 2006-01-09 14:48:52 +11:00
machine_kexec_64.c [PATCH] powerpc: Only calculate htab_size in one place for kexec 2006-02-24 11:36:18 +11:00
Makefile ppc: Use the system call table from arch/powerpc/kernel/systbl.S 2006-02-10 16:02:20 +11:00
misc_32.S [PATCH] powerpc: Cleanup LOADADDR etc. asm macros 2006-01-13 21:16:23 +11:00
misc_64.S [PATCH] powerpc: Cleanup LOADADDR etc. asm macros 2006-01-13 21:16:23 +11:00
module_64.c powerpc: Move most remaining ppc64 files over to arch/powerpc 2005-11-14 17:30:17 +11:00
nvram_64.c [PATCH] powerpc: fix various sparse warnings 2006-03-27 14:48:08 +11:00
of_device.c [PATCH] powerpc: tidy-up of_register_driver()/driver_register() return values 2006-03-23 14:40:54 +11:00
paca.c [PATCH] powerpc: Remove lppaca structure from the PACA 2006-01-13 21:17:39 +11:00
pci_32.c powerpc/32: Restore previous version of 32-bit PCI code 2006-01-15 22:05:47 +11:00
pci_64.c [PATCH] powerpc: properly configure DDR/P5IOC children devs 2006-03-16 16:55:07 +11:00
pci_direct_iommu.c powerpc: Move most remaining ppc64 files over to arch/powerpc 2005-11-14 17:30:17 +11:00
pci_dn.c powerpc: Move most remaining ppc64 files over to arch/powerpc 2005-11-14 17:30:17 +11:00
pci_iommu.c [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
pmc.c [PATCH] powerpc: G4+ oprofile support 2006-01-09 15:06:03 +11:00
ppc32.h
ppc_ksyms.c Merge ../linux-2.6 2006-03-17 12:01:19 +11:00
proc_ppc64.c [PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel 2005-11-11 22:25:39 +11:00
process.c [PATCH] powerpc: declare arch syscalls in <asm/syscalls.h> 2006-03-27 14:48:22 +11:00
prom.c Merge ../powerpc-merge 2006-02-28 16:35:24 +11:00
prom_init.c [PATCH] powerpc: incorrect rmo_top handling in prom_init 2006-03-03 22:01:05 +11:00
prom_parse.c [PATCH] powerpc: add refcounting to setup_peg2 and of_get_pci_address 2006-02-07 21:32:45 +11:00
ptrace-common.h [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
ptrace.c powerpc: Fix various syscall/signal/swapcontext bugs 2006-03-08 13:24:22 +11:00
ptrace32.c [PATCH] use ptrace_get_task_struct in various places 2006-01-08 20:13:51 -08:00
rtas-proc.c [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
rtas-rtc.c [PATCH] powerpc: RTC memory corruption 2006-03-16 16:55:03 +11:00
rtas.c [PATCH] powerpc: declare arch syscalls in <asm/syscalls.h> 2006-03-27 14:48:22 +11:00
rtas_flash.c [PATCH] Don't check pointer for NULL before passing it to kfree [arch/powerpc/kernel/rtas_flash.c] 2006-02-07 21:51:53 +11:00
rtas_pci.c Merge ../linux-2.6 2006-03-17 12:01:19 +11:00
semaphore.c
setup-common.c [PATCH] more for_each_cpu() conversions 2006-03-23 07:38:17 -08:00
setup.h powerpc: create kernel/setup.h 2005-11-09 11:35:26 +11:00
setup_32.c [PATCH] powerpc: fix various sparse warnings 2006-03-27 14:48:08 +11:00
setup_64.c [PATCH] powerpc: Remove calculation of io hole 2006-03-22 15:04:30 +11:00
signal_32.c [PATCH] powerpc: declare arch syscalls in <asm/syscalls.h> 2006-03-27 14:48:22 +11:00
signal_64.c [PATCH] powerpc: declare arch syscalls in <asm/syscalls.h> 2006-03-27 14:48:22 +11:00
smp-tbsync.c
smp.c powerpc: Implement accurate task and CPU time accounting 2006-02-24 14:05:56 +11:00
sys_ppc32.c [PATCH] consolidate sys32/compat_adjtimex 2006-03-26 08:56:57 -08:00
syscalls.c [PATCH] powerpc: declare arch syscalls in <asm/syscalls.h> 2006-03-27 14:48:22 +11:00
sysfs.c [PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel 2005-11-11 22:25:39 +11:00
systbl.S powerpc: Fix various syscall/signal/swapcontext bugs 2006-03-08 13:24:22 +11:00
time.c Merge ../linux-2.6 2006-03-17 12:01:19 +11:00
traps.c powerpc: Fix might-sleep warning in program check exception handler 2006-03-03 17:11:40 +11:00
udbg.c [PATCH] powerpc: Make early debugging configurable via Kconfig 2006-01-11 14:48:26 +11:00
udbg_16550.c [PATCH] powerpc: fix compile warning in udbg_init_maple_realmode 2006-02-07 21:51:52 +11:00
vdso.c Merge ../linux-2.6 2006-03-09 14:32:05 +11:00
vecemu.c
vector.S
vio.c [PATCH] Add vio_bus_type probe and remove methods 2006-01-13 11:26:07 -08:00
vmlinux.lds.S powerpc: Fix vmlinux.lds.S for 32-bit 2005-11-05 10:36:59 +11:00