Is there any chance to get LEDs working on alix boards? I suppose only GPIO lines/ports should be enabled in coreboot an everything else is done in software. Here is what documentation says about them:
Status LEDs are all turned on by the BIOS on power up. The BIOS will turn off LEDs 2 and 3 before booting the operating system. Location GPIO read port write port LED1 (left) G6 port 06100h bit 6 port 06100h bit 6 / 22 LED2 (middle) G25 port 06180h bit 9 port 06180h bit 9 / 25 LED3 (right) G27 port 06180h bit 11 port 06180h bit 11 / 27 The CS5536 GPIO ports are programmed by 32 bit atomic writes. This avoids the need for read / modify / write operations and the locking issues they entail. For example, to turn off LED1 (high), write 0000'0040h to port 06100h. To turn on LED1 (low), write 0040'0000h. Multiple port bits can be changed at the same time.
Maybe mode switch could also be useful:
The mode switch can be accessed by software as follows: Location GPIO read port MODESW# G24 port 061b0h bit 8 (active low, 0 = switch pressed)
Roman
On Thursday 06 November 2008 02:07:46 Roman Yeryomin wrote:
Is there any chance to get LEDs working on alix boards? I suppose only GPIO lines/ports should be enabled in coreboot an everything else is done in software. Here is what documentation says about them:
Status LEDs are all turned on by the BIOS on power up. The BIOS will turn off LEDs 2 and 3 before booting the operating system. Location GPIO read port write port LED1 (left) G6 port 06100h bit 6 port 06100h bit 6 / 22 LED2 (middle) G25 port 06180h bit 9 port 06180h bit 9 / 25 LED3 (right) G27 port 06180h bit 11 port 06180h bit 11 / 27 The CS5536 GPIO ports are programmed by 32 bit atomic writes. This avoids the need for read / modify / write operations and the locking issues they entail. For example, to turn off LED1 (high), write 0000'0040h to port 06100h. To turn on LED1 (low), write 0040'0000h. Multiple port bits can be changed at the same time.
Maybe mode switch could also be useful:
The mode switch can be accessed by software as follows: Location GPIO read port MODESW# G24 port 061b0h bit 8 (active low, 0 = switch pressed)
I tried to enable LED1 like this
outl(GPIOL_6_SET, GPIO_IO_BASE + GPIOL_OUT_AUX1_SELECT); outl(GPIOL_6_SET, GPIO_IO_BASE + GPIOL_OUTPUT_ENABLE); outl(GPIOL_6_SET, GPIO_IO_BASE + GPIOL_IN_AUX1_SELECT); outl(GPIOL_6_SET, GPIO_IO_BASE + GPIOL_INPUT_ENABLE);
but this only turns on the led on bootup and gives no control on it :( Can somebody look into this problem?
Roman
I'll need to get a 2c3. Is this v2 or v3, I forget.
ron
On Fri, Nov 7, 2008 at 7:21 PM, ron minnich rminnich@gmail.com wrote:
I'll need to get a 2c3. Is this v2 or v3, I forget.
it's v3
Roman
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Roman Yeryomin -
ron minnich