linux/arch/powerpc
Paul Mackerras 390cbb56a7 [POWERPC] Fix detection of loader-supplied initrd on OF platforms
Commit 79c8541924 introduced code to move
the initrd if it was in a place where it would get overwritten by the
kernel image.  Unfortunately this exposed the fact that the code that
checks whether the values passed in r3 and r4 are intended to indicate
the start address and size of an initrd image was not as thorough as the
kernel's checks.  The symptom is that on OF-based platforms, the
bootwrapper can cause an exception which causes the system to drop back
into OF.

Previously it didn't matter so much if the code incorrectly thought that
there was an initrd, since the values for start and size were just passed
through to the kernel.  Now the bootwrapper needs to apply the same checks
as the kernel since it is now using the initrd data itself (in the process
of copying it if necessary).  This adds the code to do that.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-13 10:46:21 +10:00
..
boot [POWERPC] Fix detection of loader-supplied initrd on OF platforms 2007-04-13 10:46:21 +10:00
configs Merge branch 'linux-2.6' into for-2.6.22 2007-04-13 03:50:03 +10:00
kernel [POWERPC] ibmebus: change probe/remove interface from using loc-code to DT path 2007-04-13 06:12:42 +10:00
lib [POWERPC] Use mtocrf instruction in asm when CONFIG_POWER4_ONLY=y 2007-04-13 03:55:13 +10:00
math-emu [POWERPC] ppc math-emu needs -fno-builtin-fabs for math.c and fabs.c 2006-09-26 15:24:35 +10:00
mm [POWERPC] DEBUG_PAGEALLOC for 64-bit 2007-04-13 04:09:39 +10:00
oprofile [POWERPC] cell: pm_rtas_activat_signals routine cleanup 2007-02-13 22:03:07 +01:00
platforms [POWERPC] Rename get_property to of_get_property: the last one 2007-04-13 03:55:19 +10:00
sysdev [POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-13 03:55:19 +10:00
xmon [POWERPC] Allow xmon to build without CONFIG_DEBUG_BUGVERBOSE 2007-03-09 15:03:26 +11:00
.gitignore [POWERPC] Add files build to .gitignore 2006-12-04 20:41:29 +11:00
Kconfig [POWERPC] 86xx/85xx: Move 8641 PCI-Express to arch/powerpc/sysdev/fsl_pcie.c. 2007-03-26 17:03:25 -05:00
Kconfig.debug [POWERPC] DEBUG_PAGEALLOC for 64-bit 2007-04-13 04:09:39 +10:00
Makefile [POWERPC] Create a "wrapper" script and use it in arch/powerpc/boot 2006-09-28 14:30:02 +10:00