Re: [OpenBIOS] adding eepom node to sparc64

[Blue Swirl]

On Sat, May 19, 2012 at 4:38 PM, Artyom Tarasenko  wrote:
> Both Linux and MilaX complain about the missing eeprom / rtc-m48t59 node.
> Since QEMU actually has this device I tried to add it, but not sure
> where is it located.
> In sun4u.c it's initialized like this:
>
> nvram = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59);
>
> Is 0x74 the offset to the ISA bus? Then it's wired not as on Ultra-5:
>
> Node 0xf00662d8
>                    address:  fffba000
>                    reg:  00000014.00000000.00002000
>                    model:  'mk48t59'
>                    name:  'eeprom'
>
> Here it looks like it had to be aligned to a beginning of a page,
> which makes sense because of the large size...
> So, where QEMU's 0x74 are coming from?

It's the I/O port used by PPC. Looking at the reg, it should be using
MMIO at address 0 instead.
> solaris/sparc under qemu blog: http://tyom.blogspot.com/search/label/qemu