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SubjectRe: ramoops: is using platform_drivers correct?
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On Mon, May 23, 2011 at 11:36 PM, Kyungmin Park <kmpark@infradead.org> wrote:
> Hi,
>
> You have to define the ramoops platform data at your board file and
> pass it to the platform device init.
> As these address is different for each SoCs. e.g., x86, and Samsung
> ARM SoCs and so on.
>
> I think maybe you use the x86 so define the default x86 ram address
> for ramoops and pass it to platform structures.
>
> At office, I will send the sample usage.

+static struct ramoops_platform_data goni_ramoops_data = {
+ .mem_size = SZ_16K,
+ .mem_address = 0xED000000, /* SRAM */
+};
+
+static struct platform_device goni_ramoops = {
+ .name = "ramoops",
+ .dev = {
+ .platform_data = &goni_ramoops_data,
+ },
+};

and register the goni_rammoops. then you can find a rammops.

Thank you,
Kyungmin Park


>
> Thank you,
> Kyungmin Park
>
> On Mon, May 23, 2011 at 11:10 PM, Américo Wang <xiyou.wangcong@gmail.com> wrote:
>> On Mon, May 23, 2011 at 9:27 PM, Stevie Trujillo
>> <stevie.trujillo@gmail.com> wrote:
>>> Hello,
>>>
>>> ramoops (drivers/char/ramoops.c) is for "all" computers right? When I try to
>>> load it on my laptop, I get ENODEV. This is caused by platform_driver_probe()
>>> - the code never reaches the ramoops probe callback.
>>>
>>> After I removed the platform_driver stuff, moving everything into ramoops_init
>>> and ramoops_exit it worked.
>>
>> Actually that was changed by Kyungmin, Cc'ing...
>>
>> commit c3b92ce9e75f6353104fc7f8e32fb9fdb2550ad0
>> Author: Kyungmin Park <kyungmin.park@samsung.com>
>> Date:   Wed Oct 27 15:34:52 2010 -0700
>>
>>    ramoops: use the platform data structure instead of module params
>>
>>    As each board and system has different memory for ramoops.  It's better to
>>    define the platform data instead of module params.
>>
>>    [akpm@linux-foundation.org: fix ramoops_remove() return type]
>>    Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
>>    Cc: Marco Stornelli <marco.stornelli@gmail.com>
>>    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
>>    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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>
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