[U-Boot-Users] 83xx, FSL_UEC reducing boot latency, printf causing crash
Ben Warren
bwarren at qstreams.com
Sat Dec 22 01:18:32 CET 2007
Joakim Tjernlund wrote:
>> -----Original Message-----
>> From: u-boot-users-bounces at lists.sourceforge.net
>> [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf
>> Of Joakim Tjernlund
>> Sent: den 21 december 2007 13:35
>> To: rmcguire at videopresence.com; u-boot-users at lists.sourceforge.net
>> Cc: 'Kim Phillips'
>> Subject: Re: [U-Boot-Users] 83xx, FSL_UEC reducing boot
>> latency,printf causing crash
>>
>>
>>> -----Original Message-----
>>> From: Russell McGuire [mailto:rmcguire at videopresence.com]
>>> Sent: den 21 december 2007 11:46
>>> To: u-boot-users at lists.sourceforge.net
>>> Cc: 'Kim Phillips'; joakim.tjernlund at transmode.se
>>> Subject: RE: 83xx, FSL_UEC reducing boot latency, printf
>>>
>> causing crash
>>
>>> All,
>>>
>>> Maybe somebody can help me understand what I am seeing
>>> Dealing with the printf causing crashes problem.
>>>
>>> This only occurs if printfs are caleed from within the
>>> uec_phy.c file, and
>>> only them within functions that are mapped as part of a phy
>>> specific call,
>>> i.e. a function that was within a specific part, marvell,
>>> national, etc...
>>>
>>> So when a read_status call is called, of course depending on your
>>> configuration it might get redirected to call genmii_read_status or
>>> equivlant.
>>>
>> Just to add, as I recall, it is the use of function pointers that
>> is the probem. These doesn't get relocated with normal u-boot
>> relocation. Full relocation adds stuff to __fixup_entries
>> which will relocate function ptrs that normal relocation doesn't do.
>>
>> Jocke
>>
>
> BTW, the marwell entry looks bad:
> static struct phy_info phy_info_marvell = {
> .phy_id = 0x01410c00,
> .phy_id_mask = 0xffffff00,
> .name = "Marvell 88E11x1",
> .features = MII_GBIT_FEATURES,
> .config_aneg = &marvell_config_aneg,
> .read_status = &marvell_read_status,
> .ack_interrupt = &marvell_ack_interrupt,
> .config_intr = &marvell_config_intr,
> };
>
> Those & should not be there I think.
>
> Futhermore I think each specific PHY type should have its own CONFIG_ #define
> to reduce code.
>
> Jocke
>
>
In the much-talked-about-but-little-seen upcoming PHY library, each
manufacturer has its own source file (and of course CONFIG_), just like
Linux
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