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Add private HCALL to inform updated RTAS base and entry 

This patch adds a private HCALL to inform qemu the updated
rtas-base and rtas-entry address when OS invokes the call
"instantiate-rtas". This is required as qemu allocates the
error reporting structure in RTAS space upon a machine check
exception and hence needs to know the updated RTAS.

Enhancements to qemu to handle the private HCALL, prepare
error log and invoke machine check notification routine
are in a separate patch.

Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
This commit is contained in:
Nikunj A. Dadhania 2014-08-25 18:30:10 +05:30 committed by Nikunj A Dadhania
parent 706c69e46b
commit f9a60de304
4 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
board-qemu/slof/rtas.fs
View File

@ -174,7 +174,11 @@ rtas-node set-node
: instantiate-rtas ( adr -- entry )
dup rtas-base swap rtas-size move
rtas-entry rtas-base - +
dup rtas-entry rtas-base - +
2dup hv-rtas-update 0 <> IF
." Failed to update RTAS " cr
THEN
nip
;
device-end

6
lib/libhvcall/hvcall.code
View File

@ -111,6 +111,12 @@ PRIM(hv_X2d_cas)
TOS.u = hv_cas(vec, buf, size);
MIRP
PRIM(hv_X2d_rtas_X2d_update)
unsigned long rtas_entry = TOS.u; POP;
unsigned long rtas_base = TOS.u;
TOS.u = hv_generic(KVMPPC_H_RTAS_UPDATE, rtas_base, rtas_entry);
MIRP
PRIM(get_X2d_print_X2d_version)
unsigned long addr = TOS.u; POP;
get_print_banner(addr);

1
lib/libhvcall/hvcall.in
View File

@ -30,4 +30,5 @@ cod(RX!)
cod(hv-logical-memop)
cod(hv-cas)
cod(hv-rtas-update)
cod(get-print-version)

4
lib/libhvcall/libhvcall.h
View File

@ -24,7 +24,9 @@
#define KVMPPC_H_LOGICAL_MEMOP (KVMPPC_HCALL_BASE + 0x1)
/* Client Architecture support */
#define KVMPPC_H_CAS (KVMPPC_HCALL_BASE + 0x2)
#define KVMPPC_HCALL_MAX KVMPPC_H_CAS
#define KVMPPC_H_RTAS_UPDATE (KVMPPC_HCALL_BASE + 0x3)
#define KVMPPC_H_REPORT_MC_ERR (KVMPPC_HCALL_BASE + 0x4)
#define KVMPPC_HCALL_MAX KVMPPC_H_NMI_MCE
#ifndef __ASSEMBLY__