[U-Boot] [PATCH] bootz: fix silent console
Markus Niebel
list-09_u-boot at tqsc.de
Tue Nov 25 09:31:43 CET 2014
Hello Simon,
Am 20.11.2014 um 20:15 schrieb Simon Glass:
> Hi Markus,
>
> On 18 November 2014 12:52, Markus Niebel <list-09_u-boot at tqsc.de> wrote:
>> From: Markus Niebel <Markus.Niebel at tq-group.com>
>>
>> fixup was lost during split between command code and logic.
>>
>> Signed-off-by: Markus Niebel <Markus.Niebel at tq-group.com>
>> ---
>> common/bootm.c | 2 +-
>> common/cmd_bootm.c | 6 ++++++
>> include/bootm.h | 2 ++
>> 3 files changed, 9 insertions(+), 1 deletion(-)
>>
>> diff --git a/common/bootm.c b/common/bootm.c
>> index 6b3ea8c..94b9503 100644
>> --- a/common/bootm.c
>> +++ b/common/bootm.c
>> @@ -467,7 +467,7 @@ ulong bootm_disable_interrupts(void)
>> #define CONSOLE_ARG "console="
>> #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
>>
>> -static void fixup_silent_linux(void)
>> +void fixup_silent_linux(void)
>> {
>> char *buf;
>> const char *env_val;
>> diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
>> index 6723360..d3e410a 100644
>> --- a/common/cmd_bootm.c
>> +++ b/common/cmd_bootm.c
>> @@ -596,6 +596,12 @@ int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>> * disable interrupts ourselves
>> */
>> bootm_disable_interrupts();
>> +#if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
>> + /*
>> + * same goes for fixup_silent_linux
>> + */
>> + fixup_silent_linux();
>> +#endif
>>
>> images.os.os = IH_OS_LINUX;
>> ret = do_bootm_states(cmdtp, flag, argc, argv,
>> diff --git a/include/bootm.h b/include/bootm.h
>> index b3d1a62..8e094b3 100644
>> --- a/include/bootm.h
>> +++ b/include/bootm.h
>> @@ -50,6 +50,8 @@ ulong bootm_disable_interrupts(void);
>>
>> /* This is a special function used by booti/bootz */
>> int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[]);
>> +/* This function is used also used by bootz */
>> +void fixup_silent_linux(void);
>>
>> int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
>> int states, bootm_headers_t *images, int boot_progress);
>
> Quite a bit of effort was expended trying to join this code back
> together rather than having two separate code paths for bootm and
> bootz.
I Understand
>
> Since this is cmdline-related, I suggest something like this:
>
> - Enable BOOTM_STATE_OS_CMDLINE for all archs in do_bootm()
> - Call fixup_silent_linux() in do_bootm_states() when processing
> BOOTM_STATE_OS_CMDLINE
> - Add BOOTM_STATE_OS_CMDLINE to the do_bootm_states() call in do_bootz()
>
I read through the code to find out, what the implications of your
suggestions were. Since I'm not very familiar with this piece of code,
please correct me, If i'm wrong:
- rename the arch specific do_bootm_linux to arch_bootm_linux
- implement a generic version of do_bootm_linux inside bootm_os.c
- call arch_bootm_linux from generic do_bootm_linux
- move the call to fixup_silent_linux to new do_bootm_linux for the
BOOTM_STATE_OS_CMDLINE case
- mask BOOTM_STATE_OS_CMDLINE before calling arch_bootm_linux for all but
MIPS and PPC
because this seems a bit intrusive I'm not sure. But if this is the wy to go, I
will prepare a patch.
> Or similar...that way we keep bootm and bootz in sync. The separate
> call to bootm_disable_interrupts() is unfortunate but is a problem for
> another day.
>
> Regards,
> Simon
>
Regards,
Markus
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