diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2020-03-25 16:25:42 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2020-05-07 11:10:50 +1000 |
| commit | 91067db1abcdc6caf951494b8d7e4bfaaa0cb61d (patch) | |
| tree | 468ad6624f9c0366f9158563ff83a4abb1092140 /include | |
| parent | b4b83312e72461540ee155006f0d49e33bf0c58d (diff) | |
spapr/cas: Separate CAS handling from rebuilding the FDT
At the moment "ibm,client-architecture-support" ("CAS") is implemented
in SLOF and QEMU assists via the custom H_CAS hypercall which copies
an updated flatten device tree (FDT) blob to the SLOF memory which
it then uses to update its internal tree.
When we enable the OpenFirmware client interface in QEMU, we won't need
to copy the FDT to the guest as the client is expected to fetch
the device tree using the client interface.
This moves FDT rebuild out to a separate helper which is going to be
called from the "ibm,client-architecture-support" handler and leaves
writing FDT to the guest in the H_CAS handler.
This should not cause any behavioral change.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20200310050733.29805-3-aik@ozlabs.ru>
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <158514994229.478799.2178881312094922324.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/ppc/spapr.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 42d64a0368..b7e13e5aaf 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -102,6 +102,8 @@ typedef enum { #define SPAPR_CAP_FIXED_CCD 0x03 #define SPAPR_CAP_FIXED_NA 0x10 /* Lets leave a bit of a gap... */ +#define FDT_MAX_SIZE 0x100000 + typedef struct SpaprCapabilities SpaprCapabilities; struct SpaprCapabilities { uint8_t caps[SPAPR_CAP_NUM]; @@ -566,6 +568,11 @@ void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn); target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, target_ulong *args); +target_ulong do_client_architecture_support(PowerPCCPU *cpu, + SpaprMachineState *spapr, + target_ulong addr, + target_ulong fdt_bufsize); + /* Virtual Processor Area structure constants */ #define VPA_MIN_SIZE 640 #define VPA_SIZE_OFFSET 0x4 |