Dear Adam :
Thank you very much !
Now I have understand the IO MAPPING rules .
All IO address mapping is only recognized by first 5 bits
,the last three bit is no mean for address(only for flags) .
I mapping the S3C6410 GPIO ,Video-control ,Sfr once again .
Now i can make the LCD bright and run the spectrum in real
hardware .
Thanks .
Best regards ~~
------------------------------ Message: 2 Date: Wed, 27 Feb 2013
22:13:47 +0100 From: Adam Lackorzynski <adam(a)os.inf.tu-dresden.de> To:
l4-hackers(a)os.inf.tu-dresden.de Subject: Re: [ARM11] Question for the
ARM 11 GPIO MAPPING Message-ID:
<20130227211347.GA6841(a)os.inf.tu-dresden.de> Content-Type: text/plain;
charset=iso-8859-1 Hi, On Tue Feb 26, 2013 at 20:10:15 +0800, Jason.han
wrote:
>> Now I have GPIO Mapping problems happened when
>> run the L4re in Arm 11 (6410 ).
>>
>> .devs ==> Res.mmio(0x7f008100, 0x7f00813f);
>> .lcd.c ==>l4io_request_iomem(0x7f008100, 0x03f,
>> L4IO_MEM_NONCACHED, &lcd_gpio_virt_base);
>>
>> when
>> "l4_mem_write(lcd_gpio_virt_base+0x00,L4_MEM_WIDTH_4BYTE,0xaaaaaaaa);
>> download in real-hw board : the core will died as it :
>>
>> Ned: loading file: 'rom/arm-rv-lcd.cfg'
>>
>> hello | Hello World!
>> IO | Dev_factory: register factory for N2Hw6DeviceE
>> IO | GTF: register factory for 7Pci_dev
>> IO | GTF: register factory for N2Hw12Msi_resourceE
>> IO | Dev_factory: register factory for N2Hw11Gpio_deviceE
>> IO | Io service
>> IO | Ready. Waiting for request.
>> fbdrv | Using LCD driver: S3C6410
>> fbdrv | lcd_control_virt_base is 0x3000
>> fbdrv | lcd_gpio_virt_base is 0x4000
>> fbdrv | Video memory is at virtual 0x5000 (size: 0x3fc00 Bytes)
>> fbdrv | Physical video memory is at 0x50394000 ==>core died
>>
>> after delete it and only use l4_mem_read , value always is
>>
>> IO | Ready. Waiting for request.
>>
>> fbdrv | Using LCD driver: S3C6410
>> fbdrv | lcd_control_virt_base is 0x3000
>> fbdrv | lcd_gpio_virt_base is 0x4000
>> fbdrv | Video memory is at virtual 0x5000 (size: 0x3fc00 Bytes)
>> fbdrv | Physical video memory is at 0x50395000
>> fbdrv | 0 value is 0x220022 ==> core run is ok.
>>
>> In the range of the GPIO ,whatever I defined , the
>> lcd_gpio_virt_base + offset (value 0) is always 0x220022 ,can't
>> be written .
>> the lcd_gpio_virt_base + offset (value 0x04) is always 0x23 ,can
>> be written ,but value never be changed .
>> From Offset (value 0x08) is normal . why only GPIO like this ,I
>> write some time and control -register always OK.
>>
>> Do you know Why , Can you give me some advices ? Thank you .
>>
>> I also try to .devs ==> Res.mmio(0x7f008000, 0x7f00813f);
>> .lcd.c ==>l4io_request_iomem(0x7f008000,
>> 0x03f, L4IO_MEM_NONCACHED, &lcd_gpio_virt_base);
>> when
>> "l4_mem_write(lcd_gpio_virt_base+0x100,L4_MEM_WIDTH_4BYTE,0xaaaaaaaa);
>> The offset 0x00 ,and 0x04 same problem ,but now I can write
>> 0xaaaaaaaa for this IO port, even though working not well .
> What I notice is that you want to have 0x7f008100, however, mappings are
> page granular, i.e. lower 3 digits are 0. The output says the virt_base
> is 0x4000, so you probably want to access 0x4100. Maybe the device at
> offset 0 is behaving like what you're seeing.
>
>
>
>
> Adam
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