Hello everybody,
Changes from previous version:
- removed bogus hyphen from the patch;
- move ifdefs to crt.S instead of Makefile
Please find here patch for user land kexec-tools application. Following
patch makes kexec-tools work for both kexec and kdump. I tested it with
git kernel (linus-tree) and Freescale/Logic MPC8360ERDK board with
mpc83xx_defconfig kernel config.
kexec:
kexec -l vmlinux --command-line="console= ... etc"
kexec -e
kdump:
kexec -p vmlinux_dump --command-line="console=... etc"
echo c > /proc/sysrq-trigger
I also think that is is reasonable:
- put GAME_CUBE specific code to separate files;
- combine ppc and ppc64 to powerpc directory (I'm planning to do it.
And that why in some places my patch have ifdefs for PPC64);
Best regards,
Maxim Uvarov.
From: Maxim Uvarov
Linker does not provide some vital functions when building freestanding
applications with a new toolchain, so we have to provide our own CRT.
p.s.
Without the CRT we won't see any build errors (since the purgatory is
linked with --no-undefined), but the purgatory code won't work,
'kexec -e' will just hang the board.
I added option to configure to keep code buildable for old toolchais.
But there should be way to do this automatically.
Author: Anton Vorontsov
Signed-off-by: Maxim Uvarov
Signed-off-by: Maxim Uvarov
---
configure.ac|9 +
purgatory/arch/ppc/Makefile |1
purgatory/arch/ppc/crt.S| 263 +++
3 files changed, 273 insertions(+), 0 deletions(-)
create mode 100644 purgatory/arch/ppc/crt.S
diff --git a/configure.ac b/configure.ac
index fcf50e4..63606bc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -159,6 +159,15 @@ if test "$with_xen" = yes ; then
AC_MSG_NOTICE([Xen support disabled])))
fi
+dnl new toolchains
+if test "$ARCH" = ppc; then
+AC_ARG_WITH([oldtoolchain],
+ AC_HELP_STRING([--with-oldtoolchain],[compile without crt.S
+ required for new toolchains]),
+ AC_DEFINE(PPC_OLDTOOLCHAIN, 1,
+ [Define to compile with old toolchains]))
+fi
+
dnl ---Sanity checks
if test "$CC" = "no"; then AC_MSG_ERROR([cc not found]); fi
if test "$CPP" = "no"; then AC_MSG_ERROR([cpp not found]); fi
diff --git a/purgatory/arch/ppc/Makefile b/purgatory/arch/ppc/Makefile
index 72289a0..4020778 100644
--- a/purgatory/arch/ppc/Makefile
+++ b/purgatory/arch/ppc/Makefile
@@ -6,6 +6,7 @@ ppc_PURGATORY_SRCS += purgatory/arch/ppc/v2wrap_32.S
ppc_PURGATORY_SRCS += purgatory/arch/ppc/misc.S
ppc_PURGATORY_SRCS += purgatory/arch/ppc/purgatory-ppc.c
ppc_PURGATORY_SRCS += purgatory/arch/ppc/console-ppc.c
+ppc_PURGATORY_SRCS += purgatory/arch/ppc/crt.S
dist += purgatory/arch/ppc/Makefile $(ppc_PURGATORY_SRCS) \
purgatory/arch/ppc/purgatory-ppc.h purgatory/arch/ppc/ppc_asm.h
diff --git a/purgatory/arch/ppc/crt.S b/purgatory/arch/ppc/crt.S
new file mode 100644
index 000..70f4d61
--- /dev/null
+++ b/purgatory/arch/ppc/crt.S
@@ -0,0 +1,263 @@
+/* This is from linux-2.6/arch/powerpc/lib/crtsavres.S:
+ *
+ * Special support for eabi and SVR4
+ *
+ * Copyright (C) 1995, 1996, 1998, 2000, 2001 Free Software Foundation, Inc.
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ * Written By Michael Meissner
+ *
+ * Based on gcc/config/rs6000/crtsavres.asm from gcc
+ *
+ * This file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * In addition to the permissions in the GNU General Public License, the
+ * Free Software Foundation gives you unlimited permission to link the
+ * compiled version of this file with other programs, and to distribute
+ * those programs without any restriction coming from the use of this
+ * file. (The General Public License restrictions do apply in other
+ * respects; for example, they cover modification of the file, and
+ * distribution when not linked into another program.)
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ *As a special exception, if you link this library with files
+ *compiled with GCC to produce an executable, this does not cause
+ *the resulting executable to be covered by the GNU General Public License.
+ *This exception does not however invalidate any o
