[PATCH v5 0/4] arm64,xen: add xen_boot support into grup-mkconfig

[PATCH v5 0/4] arm64,xen: add xen_boot support into grup-mkconfig

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

This patchset add xen_boot support into grup-mkconfig for
generating xen boot entrances automatically

Also update the docs/grub.texi for new xen_boot commands.

This patchset has been tested on Foudation model with a bug fix:
http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00205.html

ChangeLog:
v5: Update the introduction of xen_module commands in docs/grub.texi,
    according to the suggestion from Julien Grall

v4: http://lists.gnu.org/archive/html/grub-devel/2016-05/
    according to the XSM loading mechanism of Xen(upstreamed),
    update the introduction of xen_module commands in docs/grub.texi

v3: http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00314.html
    reorder the patches
    update the introduction of xen_module commands in docs/grub.texi

v2: http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00282.html
    add "--nounzip" option support in xen_module
    use "feature_xen_boot" instead of "grub_xen_boot"
    update the introduction of xen boot commands in docs/grub.texi

v1 :first upstream patchset:
    http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00264.html

Fu Wei (4):
  i386,xen: Add xen_hypervisor and xen_module aliases for i386
  arm64: add "--nounzip" option support in xen_module command
  * util/grub.d/20_linux_xen.in: Add xen_boot command support
  arm64: update the introduction of xen boot commands in docs/grub.texi

 docs/grub.texi                    | 32 +++++++++-----------------------
 grub-core/loader/arm64/xen_boot.c | 17 +++++++++++++++++
 grub-core/loader/i386/xen.c       |  7 +++++++
 grub-core/normal/main.c           |  2 +-
 util/grub.d/20_linux_xen.in       | 13 ++++++++++---
 5 files changed, 44 insertions(+), 27 deletions(-)

-- 
2.5.5

[PATCH v5 1/4] i386, xen: Add xen_hypervisor and xen_module aliases for i386

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 grub-core/loader/i386/xen.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/grub-core/loader/i386/xen.c b/grub-core/loader/i386/xen.c
index c4d9689..15b0727 100644
--- a/grub-core/loader/i386/xen.c
+++ b/grub-core/loader/i386/xen.c
@@ -689,6 +689,7 @@ fail:
 }
 
 static grub_command_t cmd_xen, cmd_initrd, cmd_module, cmd_multiboot;
+static grub_command_t cmd_xen_hypervisor, cmd_xen_module;
 
 GRUB_MOD_INIT (xen)
 {
@@ -696,10 +697,14 @@ GRUB_MOD_INIT (xen)
 				   0, N_("Load Linux."));
   cmd_multiboot = grub_register_command ("multiboot", grub_cmd_xen,
 					 0, N_("Load Linux."));
+  cmd_xen_hypervisor = grub_register_command ("xen_hypervisor", grub_cmd_xen,
+					      0, N_("Load Linux."));
   cmd_initrd = grub_register_command ("initrd", grub_cmd_initrd,
 				      0, N_("Load initrd."));
   cmd_module = grub_register_command ("module", grub_cmd_module,
 				      0, N_("Load module."));
+  cmd_xen_module = grub_register_command ("xen_module", grub_cmd_module,
+				      0, N_("Load module."));
   my_mod = mod;
 }
 
@@ -709,4 +714,6 @@ GRUB_MOD_FINI (xen)
   grub_unregister_command (cmd_initrd);
   grub_unregister_command (cmd_multiboot);
   grub_unregister_command (cmd_module);
+  grub_unregister_command (cmd_xen_module);
+  grub_unregister_command (cmd_xen_hypervisor);
 }
-- 
2.5.5

[PATCH v5 2/4] arm64: add "--nounzip" option support in xen_module command

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

This patch adds "--nounzip" option support in order to
be compatible with the module command of i386, then we can
simplify grub-mkconfig support code.

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 grub-core/loader/arm64/xen_boot.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/grub-core/loader/arm64/xen_boot.c b/grub-core/loader/arm64/xen_boot.c
index a914eb8..0878364 100644
--- a/grub-core/loader/arm64/xen_boot.c
+++ b/grub-core/loader/arm64/xen_boot.c
@@ -20,6 +20,7 @@
 #include <grub/charset.h>
 #include <grub/command.h>
 #include <grub/err.h>
+#include <grub/env.h>
 #include <grub/file.h>
 #include <grub/fdt.h>
 #include <grub/list.h>
@@ -379,6 +380,20 @@ grub_cmd_xen_module (grub_command_t cmd __attribute__((unused)),
 
   struct xen_boot_binary *module = NULL;
   grub_file_t file = 0;
+  int nounzip = 0;
+
+  if (!argc)
+    {
+      grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
+      goto fail;
+    }
+
+  if (grub_strcmp (argv[0], "--nounzip") == 0)
+    {
+      argv++;
+      argc--;
+      nounzip = 1;
+    }
 
   if (!argc)
     {
@@ -403,6 +418,8 @@ grub_cmd_xen_module (grub_command_t cmd __attribute__((unused)),
 
   grub_dprintf ("xen_loader", "Init module and node info\n");
 
+  if (nounzip)
+    grub_file_filter_disable_compression ();
   file = grub_file_open (argv[0]);
   if (!file)
     goto fail;
-- 
2.5.5


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[PATCH v5 3/4] * util/grub.d/20_linux_xen.in: Add xen_boot command support

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

This patch adds the support of xen_boot command:
    xen_hypervisor
    xen_module

Also add a new "feature_xen_boot" to indicate this grub support
xen_boot command.

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 grub-core/normal/main.c     |  2 +-
 util/grub.d/20_linux_xen.in | 13 ++++++++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
index 78a70a8..3402a05 100644
--- a/grub-core/normal/main.c
+++ b/grub-core/normal/main.c
@@ -488,7 +488,7 @@ static const char *features[] = {
   "feature_chainloader_bpb", "feature_ntldr", "feature_platform_search_hint",
   "feature_default_font_path", "feature_all_video_module",
   "feature_menuentry_id", "feature_menuentry_options", "feature_200_final",
-  "feature_nativedisk_cmd", "feature_timeout_style"
+  "feature_nativedisk_cmd", "feature_timeout_style", "feature_xen_boot"
 };
 
 GRUB_MOD_INIT(normal)
diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index c48af94..6a88a39 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -122,16 +122,23 @@ linux_entry ()
         else
             xen_rm_opts="no-real-mode edd=off"
         fi
-	multiboot	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}
+        if [ "x\$feature_xen_boot" != xy ]; then
+            xen_loader="multiboot"
+            module_loader="module"
+        else
+            xen_loader="xen_hypervisor"
+            module_loader="xen_module"
+        fi
+	\${xen_loader}	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}
 	echo	'$(echo "$lmessage" | grub_quote)'
-	module	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
+	\${module_loader}	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
 EOF
   if test -n "${initrd}" ; then
     # TRANSLATORS: ramdisk isn't identifier. Should be translated.
     message="$(gettext_printf "Loading initial ramdisk ...")"
     sed "s/^/$submenu_indentation/" << EOF
 	echo	'$(echo "$message" | grub_quote)'
-	module	--nounzip   ${rel_dirname}/${initrd}
+	\${module_loader} --nounzip	${rel_dirname}/${initrd}
 EOF
   fi
   sed "s/^/$submenu_indentation/" << EOF
-- 
2.5.5


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[PATCH v5 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

delete: xen_linux, xen_initrd, xen_xsm
add: xen_module

This update bases on
    commit 0edd750e50698854068358ea53528100a9192902
    Author: Vladimir Serbinenko <phcoder@gmail.com>
    Date:   Fri Jan 22 10:18:47 2016 +0100

        xen_boot: Remove obsolete module type distinctions.

Also bases on the module loading mechanism of Xen code:
488c2a8 docs/arm64: clarify the documention for loading XSM support
67831c4 docs/arm64: update the documentation for loading XSM support
ca32012 xen/arm64: check XSM Magic from the second unknown module.

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 docs/grub.texi | 32 +++++++++-----------------------
 1 file changed, 9 insertions(+), 23 deletions(-)

diff --git a/docs/grub.texi b/docs/grub.texi
index 82f6fa4..85c913e 100644
--- a/docs/grub.texi
+++ b/docs/grub.texi
@@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
 * videoinfo::                   List available video modes
 @comment * xen_*::              Xen boot commands
 * xen_hypervisor::              Load xen hypervisor binary
-* xen_linux::                   Load dom0 kernel for xen hypervisor
-* xen_initrd::                  Load dom0 initrd for dom0 kernel
-* xen_xsm::                     Load xen security module for xen hypervisor
+* xen_module::                  Load xen modules for xen hypervisor
 @end menu
 
 
@@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
 reloaded after using this command.
 @end deffn
 
-@node xen_linux
-@subsection xen_linux
+@node xen_module
+@subsection xen_module
 
-@deffn Command xen_linux file [arguments]
-Load a dom0 kernel image for xen hypervisor at the booting process of xen.
+@deffn Command xen_module [--nounzip] file [arguments]
+Load a module for xen hypervisor at the booting process of xen.
 The rest of the line is passed verbatim as the module command line.
+Modules should be loaded in the following order:
+ - dom0 kernel image
+ - dom0 ramdisk if present
+ - XSM policy if present
 @end deffn
 
-@node xen_initrd
-@subsection xen_initrd
-
-@deffn Command xen_initrd file
-Load a initrd image for dom0 kernel at the booting process of xen.
-@end deffn
-
-@node xen_xsm
-@subsection xen_xsm
-
-@deffn Command xen_xsm file
-Load a xen security module for xen hypervisor at the booting process of xen.
-See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
-@end deffn
-
-
 @node Networking commands
 @section The list of networking commands
 
-- 
2.5.5

Re: [PATCH v5 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Julien Grall]

Hi Fu Wei,

On 06/07/16 18:53, fu.wei@linaro.org wrote:
> From: Fu Wei <fu.wei@linaro.org>
>
> delete: xen_linux, xen_initrd, xen_xsm
> add: xen_module
>
> This update bases on
>      commit 0edd750e50698854068358ea53528100a9192902
>      Author: Vladimir Serbinenko <phcoder@gmail.com>
>      Date:   Fri Jan 22 10:18:47 2016 +0100
>
>          xen_boot: Remove obsolete module type distinctions.
>
> Also bases on the module loading mechanism of Xen code:
> 488c2a8 docs/arm64: clarify the documention for loading XSM support
> 67831c4 docs/arm64: update the documentation for loading XSM support
> ca32012 xen/arm64: check XSM Magic from the second unknown module.
>
> Signed-off-by: Fu Wei <fu.wei@linaro.org>

Reviewed-by: Julien Grall <julien.grall@arm.com>

Regards,

-- 
Julien Grall

Re: [PATCH v5 3/4] * util/grub.d/20_linux_xen.in: Add xen_boot command support

[Julien Grall]

Hi Fu Wei,

On 06/07/16 18:53, fu.wei@linaro.org wrote:
> From: Fu Wei <fu.wei@linaro.org>
>
> This patch adds the support of xen_boot command:
>      xen_hypervisor
>      xen_module
>
> Also add a new "feature_xen_boot" to indicate this grub support
> xen_boot command.
>
> Signed-off-by: Fu Wei <fu.wei@linaro.org>
> ---
>   grub-core/normal/main.c     |  2 +-
>   util/grub.d/20_linux_xen.in | 13 ++++++++++---
>   2 files changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
> index 78a70a8..3402a05 100644
> --- a/grub-core/normal/main.c
> +++ b/grub-core/normal/main.c
> @@ -488,7 +488,7 @@ static const char *features[] = {
>     "feature_chainloader_bpb", "feature_ntldr", "feature_platform_search_hint",
>     "feature_default_font_path", "feature_all_video_module",
>     "feature_menuentry_id", "feature_menuentry_options", "feature_200_final",
> -  "feature_nativedisk_cmd", "feature_timeout_style"
> +  "feature_nativedisk_cmd", "feature_timeout_style", "feature_xen_boot"
>   };
>
>   GRUB_MOD_INIT(normal)
> diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
> index c48af94..6a88a39 100644
> --- a/util/grub.d/20_linux_xen.in
> +++ b/util/grub.d/20_linux_xen.in
> @@ -122,16 +122,23 @@ linux_entry ()
>           else
>               xen_rm_opts="no-real-mode edd=off"
>           fi
> -	multiboot	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}
> +        if [ "x\$feature_xen_boot" != xy ]; then
> +            xen_loader="multiboot"
> +            module_loader="module"
> +        else
> +            xen_loader="xen_hypervisor"
> +            module_loader="xen_module"
> +        fi
> +	\${xen_loader}	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}

What is the coding style for grub? This line is using hard tabs, but the 
previous one are using soft tab.

>   	echo	'$(echo "$lmessage" | grub_quote)'
> -	module	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
> +	\${module_loader}	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
>   EOF
>     if test -n "${initrd}" ; then
>       # TRANSLATORS: ramdisk isn't identifier. Should be translated.
>       message="$(gettext_printf "Loading initial ramdisk ...")"
>       sed "s/^/$submenu_indentation/" << EOF
>   	echo	'$(echo "$message" | grub_quote)'
> -	module	--nounzip   ${rel_dirname}/${initrd}
> +	\${module_loader} --nounzip	${rel_dirname}/${initrd}
>   EOF
>     fi
>     sed "s/^/$submenu_indentation/" << EOF
>

Regards,

-- 
Julien Grall

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Re: [PATCH v5 3/4] * util/grub.d/20_linux_xen.in: Add xen_boot command support

[Fu Wei]

Hi Julien,

On 12 July 2016 at 18:21, Julien Grall <julien.grall@arm.com> wrote:
> Hi Fu Wei,
>
>
> On 06/07/16 18:53, fu.wei@linaro.org wrote:
>>
>> From: Fu Wei <fu.wei@linaro.org>
>>
>> This patch adds the support of xen_boot command:
>>      xen_hypervisor
>>      xen_module
>>
>> Also add a new "feature_xen_boot" to indicate this grub support
>> xen_boot command.
>>
>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>> ---
>>   grub-core/normal/main.c     |  2 +-
>>   util/grub.d/20_linux_xen.in | 13 ++++++++++---
>>   2 files changed, 11 insertions(+), 4 deletions(-)
>>
>> diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
>> index 78a70a8..3402a05 100644
>> --- a/grub-core/normal/main.c
>> +++ b/grub-core/normal/main.c
>> @@ -488,7 +488,7 @@ static const char *features[] = {
>>     "feature_chainloader_bpb", "feature_ntldr",
>> "feature_platform_search_hint",
>>     "feature_default_font_path", "feature_all_video_module",
>>     "feature_menuentry_id", "feature_menuentry_options",
>> "feature_200_final",
>> -  "feature_nativedisk_cmd", "feature_timeout_style"
>> +  "feature_nativedisk_cmd", "feature_timeout_style", "feature_xen_boot"
>>   };
>>
>>   GRUB_MOD_INIT(normal)
>> diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
>> index c48af94..6a88a39 100644
>> --- a/util/grub.d/20_linux_xen.in
>> +++ b/util/grub.d/20_linux_xen.in
>> @@ -122,16 +122,23 @@ linux_entry ()
>>           else
>>               xen_rm_opts="no-real-mode edd=off"
>>           fi
>> -       multiboot       ${rel_xen_dirname}/${xen_basename} placeholder
>> ${xen_args} \${xen_rm_opts}
>> +        if [ "x\$feature_xen_boot" != xy ]; then
>> +            xen_loader="multiboot"
>> +            module_loader="module"
>> +        else
>> +            xen_loader="xen_hypervisor"
>> +            module_loader="xen_module"
>> +        fi
>> +       \${xen_loader}  ${rel_xen_dirname}/${xen_basename} placeholder
>> ${xen_args} \${xen_rm_opts}
>
>
> What is the coding style for grub? This line is using hard tabs, but the
> previous one are using soft tab.

Thanks for pointing it out, I thinks it should be soft tab,
reason:
(1) GRUB follows the GNU Coding Standards
(2) according to "GNU Hello"( an example of how to follow the GNU
coding standards ),
the shell scripts are using soft tab.

So I will use  soft tab in v6, please check

Thanks

>
>>         echo    '$(echo "$lmessage" | grub_quote)'
>> -       module  ${rel_dirname}/${basename} placeholder
>> root=${linux_root_device_thisversion} ro ${args}
>> +       \${module_loader}       ${rel_dirname}/${basename} placeholder
>> root=${linux_root_device_thisversion} ro ${args}
>>   EOF
>>     if test -n "${initrd}" ; then
>>       # TRANSLATORS: ramdisk isn't identifier. Should be translated.
>>       message="$(gettext_printf "Loading initial ramdisk ...")"
>>       sed "s/^/$submenu_indentation/" << EOF
>>         echo    '$(echo "$message" | grub_quote)'
>> -       module  --nounzip   ${rel_dirname}/${initrd}
>> +       \${module_loader} --nounzip     ${rel_dirname}/${initrd}
>>   EOF
>>     fi
>>     sed "s/^/$submenu_indentation/" << EOF
>>
>
> Regards,
>
> --
> Julien Grall



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat

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