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| author | Cédric Le Goater <clg@kaod.org> | 2021-09-01 11:41:48 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2021-09-29 19:37:38 +1000 |
| commit | 40ef88ba77ac84baab3a78171a49829a6cd1d3e0 (patch) | |
| tree | 10610989d342a14824520561176de35daf43d30a /hw/ppc/pnv_xscom.c | |
| parent | 3ad2111175dddb4e396c25ce242a5c7763d42631 (diff) | |
| download | qemu-40ef88ba77ac84baab3a78171a49829a6cd1d3e0.zip qemu-40ef88ba77ac84baab3a78171a49829a6cd1d3e0.tar.gz qemu-40ef88ba77ac84baab3a78171a49829a6cd1d3e0.tar.bz2 | |
ppc/pnv: Add a comment on the "primary-topology-index" property
On P10, the chip id is calculated from the "Primary topology table
index". See skiboot commits for more information [1].
This information is extracted from the hdata on real systems which
QEMU needs to emulate. Add this property for all machines even if it
is only used on POWER10.
[1] https://github.com/open-power/skiboot/commit/2ce3f083f399
https://github.com/open-power/skiboot/commit/a2d4d7f9e14a
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20210901094153.227671-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/ppc/pnv_xscom.c')
| -rw-r--r-- | hw/ppc/pnv_xscom.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/ppc/pnv_xscom.c b/hw/ppc/pnv_xscom.c index faa488e..9ce018d 100644 --- a/hw/ppc/pnv_xscom.c +++ b/hw/ppc/pnv_xscom.c @@ -284,6 +284,10 @@ int pnv_dt_xscom(PnvChip *chip, void *fdt, int root_offset, _FDT(xscom_offset); g_free(name); _FDT((fdt_setprop_cell(fdt, xscom_offset, "ibm,chip-id", chip->chip_id))); + /* + * On P10, the xscom bus id has been deprecated and the chip id is + * calculated from the "Primary topology table index". See skiboot. + */ _FDT((fdt_setprop_cell(fdt, xscom_offset, "ibm,primary-topology-index", chip->chip_id))); _FDT((fdt_setprop_cell(fdt, xscom_offset, "#address-cells", 1))); |