From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755226AbaICIdU (ORCPT ); Wed, 3 Sep 2014 04:33:20 -0400 Received: from mx8.pku.edu.cn ([162.105.129.171]:36994 "EHLO mail.pku.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751588AbaICIdQ convert rfc822-to-8bit (ORCPT ); Wed, 3 Sep 2014 04:33:16 -0400 X-Spam-Flag: NO X-Spam-Score: -306.932 Date: Wed, 3 Sep 2014 16:32:59 +0800 (CST) From: =?gbk?B?WHVldGFvIEd1YW4g?= To: Guenter Roeck Cc: linux-kernel@vger.kernel.org, Guan Xuetao , Chen Gang , Grant Likely Message-ID: <926403536.39754.1409733179383.JavaMail.root@bj-mail03.pku.edu.cn> In-Reply-To: <20140903035811.GA954@roeck-us.net> Subject: =?utf-8?Q?=E5=9B=9E=E5=A4=8D=EF=BC=9A_Re:_?= =?utf-8?Q?=E5=9B=9E=E5=A4=8D=EF=BC=9A_Re:_=E5=9B=9E?= =?utf-8?Q?=E5=A4=8D=EF=BC=9A_Status_of_'unic?= =?utf-8?Q?ore32'_architecture_in_Linux_kernel?= MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-Originating-IP: [162.105.129.97] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ----- Guenter Roeck 写道： > On Wed, Sep 03, 2014 at 08:09:28AM +0800, Xuetao Guan wrote: > > > > [...] > > > > > > > > > > > > > > unicore32: Add ocd console and qemu-defconfig to support qemu simulator > > > > > This patch adds a primitive OCD console to communicate with qemu. > > > > > The same code is already used for early console support. > > > > > > > > Do you mean there's the same/similar code in QEMU. > > > > > > > No, I mean that the ocd functions in the linux kernel (such as ocd_putc) are > > > used by both earlyprintk and the ocd console code. > > Yes. By the way, it's only for qemu and fpga debug. > > > > > > > > > > > > > > > With this patch added, and with qemu_defconfig as provided by the same patch, > > > > > it is possible to build and load a unicore32 image in qemu using the following > > > > > qemu command line. > > > > > > > > > > qemu-system-unicore32 -curses -M puv3 -m 512 -kernel arch/unicore32/boot/zImage > > > > > > > > > > Caveats: > > > > > - The use of -nographic instead of -curses causes a qemu crash > > > > Yes, since qemu curses code was modified to meet the simple OCD console requirement. > > > > > > > The lack of support for -nographic is a problem for scripted testing. > > > The issue is that we have to interpret console output for scripted testing, > > > and having to go through curses makes that a bit difficult. > > > > > > Wonder if '-nographic' can be modeled as '-curses' with no available terminal > > > configuration. At least in theory that should work, but executing the above > > > command with TERM=dumb yields no output. Wonder how difficult it would be to > > > change that. > > > > I see. I'll try to make -nographic work anyway. > > > Please try the following patch. That seems to do it. > I am sure it can be improved, but it is a start. > > Thanks, > Guenter Thanks. I'll test it. BTW, Qemu codestyle is different, and tab should be replaced with blanks. Xuetao > > --- > From a7c89177b3c00e4c16bea25a0b4b2f9dc511e07b Mon Sep 17 00:00:00 2001 > From: Guenter Roeck > Date: Tue, 2 Sep 2014 20:55:02 -0700 > Subject: [PATCH] qemu: unicore32: Add support for non-curses display > > Add basic support for DT_NONE and DT_NOGRAPHIC display types. > > Signed-off-by: Guenter Roeck > --- > target-unicore32/helper.c | 14 +++++++++++++- > 1 file changed, 13 insertions(+), 1 deletion(-) > > diff --git a/target-unicore32/helper.c b/target-unicore32/helper.c > index e5ebbf4..dda3772 100644 > --- a/target-unicore32/helper.c > +++ b/target-unicore32/helper.c > @@ -13,6 +13,7 @@ > #include "exec/gdbstub.h" > #include "exec/helper-proto.h" > #include "qemu/host-utils.h" > +#include "sysemu/sysemu.h" > #ifndef CONFIG_USER_ONLY > #include "ui/console.h" > #endif > @@ -223,7 +224,18 @@ static void putc_on_screen(unsigned char ch) > > void helper_cp1_putc(target_ulong x) > { > - putc_on_screen((unsigned char)x); /* Output to screen */ > + switch(display_type) { > + case DT_CURSES: > + putc_on_screen((unsigned char)x); /* Output to screen */ > + break; > + case DT_NOGRAPHIC: > + case DT_NONE: > + putchar((int)x); > + break; > + default: > + break; > + } > + > DPRINTF("%c", x); /* Output to stdout */ > } > #endif > -- > 1.9.1 >