Re: [PATCH 1/1] avr32: added mem kernel command line option support

[Marco Stornelli <marco.stornelli@coritel.it>]

If you see the above function early_parse_fbmem:

static int __init early_parse_fbmem(char *p)
{
int ret;
unsigned long align;

fbmem_size = memparse(p, &p);
.........

where fbmem_size is a resource_size_t (u32 because avr32 is a 32-bit
architecture), so I used the same philosophy. Maybe I can remove
unsigned long and replace it with resource_size_t to be more uniform.

Randy Dunlap ha scritto:
> On Mon, 15 Sep 2008 12:07:19 +0200 Marco Stornelli wrote:
>
>   
>> From: Marco Stornelli <marco.stornelli@gmail.com>
>>
>> Added support for the mem kernel command line option
>> Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
>> ---
>> --- setup.c.orig    2008-09-15 11:30:00.000000000 +0200
>> +++ setup.c    2008-09-15 11:30:17.000000000 +0200
>> @@ -283,6 +283,25 @@ static int __init early_parse_fbmem(char
>>  }
>>  early_param("fbmem", early_parse_fbmem);
>>  
>> +/*
>> + * Pick out the memory size.  We look for mem=size@start,
>> + * where start and size are "size[KkMm]"
>>     
>
>                                     [KkMmGg]
>
>   
>> + */
>> +static int __init early_mem(char **p)
>> +{
>> +    unsigned long size, start;
>> +
>> +    start = system_ram->start;
>> +    size  = memparse(*p, p);
>>     
>
> memparse() returns an unsigned long long.  Is the truncation OK for avr32?
>
>   
>> +    if (**p == '@')
>> +        start = memparse(*p + 1, p);
>> +
>> +    system_ram->start = start;
>> +    system_ram->end = system_ram->start + size - 1;
>> +    return 0;
>> +}
>> +early_param("mem", early_mem);
>> +
>>  static int __init parse_tag_core(struct tag *tag)
>>  {
>>      if (tag->hdr.size > 2) {
>> --
>>     
>
>
>
> ---
> ~Randy
> Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
> http://linuxplumbersconf.org/
>
>   

-- 
Marco Stornelli
Embedded Software Engineer
CoRiTeL - Consorzio di Ricerca sulle Telecomunicazioni
http://www.coritel.it

marco.stornelli@coritel.it
+39 06 72582838