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pseries: Populate "/chosen/linux,stdout-path" in the FDT

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There is a device tree property "/chosen/linux,stdout-path" which indicates
which device should be used as stdout - ie. "the console".

Currently we don't specify anything, which means both firmware and Linux
choose something arbitrarily. Use the routine we added in the last patch
to pick a default vty and specify it as stdout.

Currently SLOF doesn't use the property, but we are hoping to update it
to do so.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
David Gibson 2011-12-13 15:24:34 +11:00 committed by Alexander Graf
parent 98331f8ad6
commit 68f3a94c64
4 changed files with 40 additions and 1 deletions
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2
hw/spapr.c
View File

@ -441,6 +441,8 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
}
}
spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
_FDT((fdt_pack(fdt)));
cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt));

34
hw/spapr_vio.c
View File

@ -793,4 +793,38 @@ out:
return ret;
}
int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus)
{
VIOsPAPRDevice *dev;
char *name, *path;
int ret, offset;
dev = spapr_vty_get_default(bus);
if (!dev)
return 0;
offset = fdt_path_offset(fdt, "/chosen");
if (offset < 0) {
return offset;
}
name = vio_format_dev_name(dev);
if (!name) {
return -ENOMEM;
}
if (asprintf(&path, "/vdevice/%s", name) < 0) {
path = NULL;
ret = -ENOMEM;
goto out;
}
ret = fdt_setprop_string(fdt, offset, "linux,stdout-path", path);
out:
free(name);
free(path);
return ret;
}
#endif /* CONFIG_FDT */

3
hw/spapr_vio.h
View File

@ -82,6 +82,7 @@ extern VIOsPAPRBus *spapr_vio_bus_init(void);
extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
extern void spapr_vio_bus_register_withprop(VIOsPAPRDeviceInfo *info);
extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt);
extern int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus);
extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode);
@ -107,6 +108,8 @@ void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev);
void spapr_vlan_create(VIOsPAPRBus *bus, uint32_t reg, NICInfo *nd);
void spapr_vscsi_create(VIOsPAPRBus *bus, uint32_t reg);
VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
int spapr_tce_set_bypass(uint32_t unit, uint32_t enable);
void spapr_vio_quiesce(void);

2
hw/spapr_vty.c
View File

@ -149,7 +149,7 @@ static VIOsPAPRDeviceInfo spapr_vty = {
},
};
static VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus)
VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus)
{
VIOsPAPRDevice *sdev, *selected;
DeviceState *iter;