Commit e7a3fee3 authored by Cédric Le Goater's avatar Cédric Le Goater Committed by David Gibson
Browse files

ppc/pnv: scan ISA bus to populate device tree 



This is an empty shell that we will use to include nodes in the device
tree for ISA devices. We expect RTC, UART and IPMI BT devices.

Signed-off-by: default avatarCédric Le Goater <clg@kaod.org>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 5a7e14a2

hw/ppc/pnv.c

+28 −0
Original line number Diff line number Diff line
@@ -303,6 +303,29 @@ static void powernv_populate_chip(PnvChip *chip, void *fdt) 
    g_free(typename);

}



typedef struct ForeachPopulateArgs {

    void *fdt;

    int offset;

} ForeachPopulateArgs;



static int powernv_populate_isa_device(DeviceState *dev, void *opaque)

{

    return 0;

}



static void powernv_populate_isa(ISABus *bus, void *fdt, int lpc_offset)

{

    ForeachPopulateArgs args = {

        .fdt = fdt,

        .offset = lpc_offset,

    };



    /* ISA devices are not necessarily parented to the ISA bus so we

     * can not use object_child_foreach() */

    qbus_walk_children(BUS(bus), powernv_populate_isa_device,

                       NULL, NULL, NULL, &args);

}



static void *powernv_create_fdt(MachineState *machine)

{

    const char plat_compat[] = "qemu,powernv\0ibm,powernv";
@@ -311,6 +334,7 @@ static void *powernv_create_fdt(MachineState *machine) 
    char *buf;

    int off;

    int i;

    int lpc_offset;



    fdt = g_malloc0(FDT_MAX_SIZE);

    _FDT((fdt_create_empty_tree(fdt, FDT_MAX_SIZE)));
@@ -350,6 +374,10 @@ static void *powernv_create_fdt(MachineState *machine) 
    for (i = 0; i < pnv->num_chips; i++) {

        powernv_populate_chip(pnv->chips[i], fdt);

    }



    /* Populate ISA devices on chip 0 */

    lpc_offset = pnv_chip_lpc_offset(pnv->chips[0], fdt);

    powernv_populate_isa(pnv->isa_bus, fdt, lpc_offset);

    return fdt;

}