Re: [OpenBIOS] [PATCH 1/6] Fix encoding of PCI and IDE "interrupts" properties

[Howard Spoelstra]

> On 02 Aug 2016, at 07:35, Benjamin Herrenschmidt  wrote:
>
> The main IDE interrupt and the PCI LSIs are level sensitive
> which is represented by a "1" in the device-tree.
> Signed-off-by: Benjamin Herrenschmidt
>
> drivers/ide.c | 2 +-
> drivers/pci.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/ide.c b/drivers/ide.c
> index 1da60c8..53a0b80 100644
> --- a/drivers/ide.c
> +++ b/drivers/ide.c
> @@ -1630,7 +1630,7 @@ int macio_ide_init(const char *path, uint32_t addr, int nb_channels)
>    		props[2] = 0x00000000;
>    		break;
>    	}
> props[1] = 0x00000000; /* XXX level triggered on real hw */
> props[1] = 0x00000001;
> props[3] = 0x00000000;
> NEWWORLD(set_property(dnode, "interrupts",
> 	     (char *)&props, 4*sizeof(props[0])));
>
> diff --git a/drivers/pci.c b/drivers/pci.c
> index 5062f30..2cffa2f 100644
> --- a/drivers/pci.c
> +++ b/drivers/pci.c
> @@ -1510,7 +1510,7 @@ static void ob_pci_host_set_interrupt_map(phandle_t host)
>                         props[ncells++] = intno;
>                         props[ncells++] = dnode;
>                         props[ncells++] = arch->irqs[intno - 1];
>                    props[ncells++] = 3;
>                    props[ncells++] = 1;
>
> #else
>                         /* Keep compiler quiet */
>                         dnode = dnode;
> -- 
> 2.7.4

Wow, these patches allow the USB2 controller to show up when booting a Leopard DVD image and thus provide keyboard/mouse in the installer. During the boot process, only when a disk image is attached, Leopard no longer boots to the installer but hangs on “ still waiting for root device” .