From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e06smtp17.uk.ibm.com (e06smtp17.uk.ibm.com [195.75.94.113]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 36F842C00AD for ; Fri, 21 Mar 2014 02:10:44 +1100 (EST) Received: from /spool/local by e06smtp17.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 20 Mar 2014 15:10:41 -0000 Received: from b06cxnps3075.portsmouth.uk.ibm.com (d06relay10.portsmouth.uk.ibm.com [9.149.109.195]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id 482A21B08069 for ; Thu, 20 Mar 2014 15:10:29 +0000 (GMT) Received: from d06av05.portsmouth.uk.ibm.com (d06av05.portsmouth.uk.ibm.com [9.149.37.229]) by b06cxnps3075.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s2KFAQQn52363436 for ; Thu, 20 Mar 2014 15:10:26 GMT Received: from d06av05.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s2KFAb16016814 for ; Thu, 20 Mar 2014 09:10:38 -0600 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: benh@kernel.crashing.org Subject: [PATCH 00/18] powerpc/boot: 64bit little endian wrapper Date: Thu, 20 Mar 2014 16:09:55 +0100 Message-Id: <1395328213-19206-1-git-send-email-clg@fr.ibm.com> In-Reply-To: <1391788771-16405-1-git-send-email-clg@fr.ibm.com> References: <1391788771-16405-1-git-send-email-clg@fr.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi, The following patchset adds support for 64bit little endian boot wrapper. It is based on original code from Andrew Tauferner. The first patches provide fixes for 64bit support. I also changed the prom code to make it converge with the prom_init kernel code. They have a lot in common and they could probably be merged. powerpc/boot: fix do_div for 64bit wrapper powerpc/boot: use a common prom_args struct in oflib powerpc/boot: use prom_arg_t in oflib powerpc/boot: add byteswapping routines in oflib powerpc/boot: add PROM_ERROR define in oflib powerpc/boot: rework of_claim() to make it 64bit friendly powerpc/boot: define typedef ihandle as u32 powerpc/boot: fix compile warning in 64bit These are for little endian only: powerpc/boot: define byteswapping routines for little endian powerpc/boot: add 64bit and little endian support to addnote powerpc/boot: add little endian support to elf utils and these to support a 64bit boot wrapper in both endian order : powerpc/boot: define a routine to enter prom powerpc/boot: modify entry point for 64bit powerpc/boot: modify how we enter kernel on 64bit powerpc/boot: add a global entry point for pseries powerpc/boot: add support for 64bit big endian wrapper powerpc/boot: add support for 64bit little endian wrapper This final patch restores the previous configuration for 64bit big endian kernel, which is to compile in 32bit : powerpc/boot: add PPC64_BOOT_WRAPPER config option Here are some topics to discuss : - to compile in 64bit, -m64 is added to the cross32 compiler. - There are still some compile warnings due to 64bit, in addnote and in the device tree library. - the wrapper is compiled as a position independent executable. This might not be an issue. - is the addnote executable still in use ? It seems important for RS6000. This patchset is based on a 3.14-rc7 and was tested on qemu with the -kernel option on little and big endian guests and with a custom yaboot suporting LE. An another round of tests will be required when a 64bit grub is available. Best, C. Cédric Le Goater (18): powerpc/boot: fix do_div for 64bit wrapper powerpc/boot: use a common prom_args struct in oflib powerpc/boot: use prom_arg_t in oflib powerpc/boot: add byteswapping routines in oflib powerpc/boot: add PROM_ERROR define in oflib powerpc/boot: rework of_claim() to make it 64bit friendly powerpc/boot: define typedef ihandle as u32 powerpc/boot: fix compile warning in 64bit powerpc/boot: define byteswapping routines for little endian powerpc/boot: add 64bit and little endian support to addnote powerpc/boot: add little endian support to elf utils powerpc/boot: define a routine to enter prom powerpc/boot: modify entry point for 64bit powerpc/boot: modify how we enter kernel on 64bit powerpc/boot: add a global entry point for pseries powerpc/boot: add support for 64bit big endian wrapper powerpc/boot: add support for 64bit little endian wrapper powerpc/boot: add PPC64_BOOT_WRAPPER config option arch/powerpc/boot/Makefile | 18 +++- arch/powerpc/boot/addnote.c | 128 +++++++++++++++-------- arch/powerpc/boot/crt0.S | 180 +++++++++++++++++++++++++++++++- arch/powerpc/boot/elf_util.c | 4 + arch/powerpc/boot/main.c | 4 + arch/powerpc/boot/of.c | 4 +- arch/powerpc/boot/of.h | 17 ++- arch/powerpc/boot/ofconsole.c | 6 +- arch/powerpc/boot/oflib.c | 94 +++++++++-------- arch/powerpc/boot/ppc_asm.h | 12 +++ arch/powerpc/boot/pseries-head.S | 8 ++ arch/powerpc/boot/stdio.c | 14 +++ arch/powerpc/boot/swab.h | 29 +++++ arch/powerpc/boot/wrapper | 17 ++- arch/powerpc/boot/zImage.lds.S | 25 ++++- arch/powerpc/platforms/Kconfig.cputype | 5 + 16 files changed, 465 insertions(+), 100 deletions(-) create mode 100644 arch/powerpc/boot/pseries-head.S create mode 100644 arch/powerpc/boot/swab.h -- 1.7.10.4