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| author | Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> | 2014-11-25 15:20:14 +0530 |
|---|---|---|
| committer | Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> | 2014-12-03 16:08:41 +0530 |
| commit | ea2b48a7a352146b34f25bbb55cc24c53d9daf7b (patch) | |
| tree | 6d2a61f3ce3160646e0f5eb7ee2a6ddf7e090040 | |
| parent | 112cdf93751b5090b344d3b3f3062fcdcda8c31d (diff) | |
| download | SLOF-ea2b48a7a352146b34f25bbb55cc24c53d9daf7b.zip SLOF-ea2b48a7a352146b34f25bbb55cc24c53d9daf7b.tar.gz SLOF-ea2b48a7a352146b34f25bbb55cc24c53d9daf7b.tar.bz2 | |
cas: reconfigure memory nodes
For supporting memory hotplug feature, some changes are need in the
way memory is represented during VM bootup. Now the guest boots from
RMA and rest of the memory is configured only during
client-architecture call. SLOF adds support for creation of these
nodes dynamically.
If the guest supports ibm,dynamic-reconfiguration-memory, qemu would
create memory as part of /ibm,dynamic-reconfiguration-memory
While for older guests, memory@ would be populated.
CC: bharata@linux.vnet.ibm.com
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
| -rw-r--r-- | board-qemu/slof/fdt.fs | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/board-qemu/slof/fdt.fs b/board-qemu/slof/fdt.fs index bd94a1b..8d4635f 100644 --- a/board-qemu/slof/fdt.fs +++ b/board-qemu/slof/fdt.fs @@ -346,6 +346,33 @@ fdt-claim-reserve device-end ; +: fdt-create-cas-node ( name -- ) + 2dup + 2dup " memory@" find-substr 0 = IF + fdt-debug IF ." Creating memory@ " cr THEN + new-device + 2dup " @" find-substr nip device-name \ Parse the node name + 2dup + 2dup " @" find-substr rot over + 1 + -rot - 1 - \ Jump to addr afte "@" + parse-2int nip xlsplit set-unit \ Parse and set unit + finish-device + ELSE + 2dup " ibm,dynamic-reconfiguration-memory" find-substr 0 = IF + fdt-debug IF ." Creating ibm,dynamic-reconfiguration-memory " cr THEN + new-device + device-name + finish-device + ELSE + 2drop 2drop + false to fdt-cas-fix? + ." Node not supported " cr + EXIT + THEN + THEN + + find-node ?dup 0 <> IF set-node THEN +; + : fdt-fix-cas-node ( start -- end ) recursive fdt-next-tag dup OF_DT_BEGIN_NODE <> IF @@ -363,12 +390,11 @@ fdt-claim-reserve drop THEN fdt-debug IF ." Setting node: " 2dup type cr THEN - find-node ?dup 0 <> IF - set-node + 2dup find-node ?dup 0 <> IF + set-node 2drop ELSE - ." Node not found " cr - false to fdt-cas-fix? - EXIT + fdt-debug IF ." Node not found, creating " 2dup type cr THEN + fdt-create-cas-node THEN fdt-debug IF ." Current now: " pwd cr THEN BEGIN |