\ *****************************************************************************
\ * Copyright (c) 2011 IBM Corporation
\ * All rights reserved.
\ * This program and the accompanying materials
\ * are made available under the terms of the BSD License
\ * which accompanies this distribution, and is available at
\ * http://www.opensource.org/licenses/bsd-license.php
\ *
\ * Contributors:
\ *     IBM Corporation - initial implementation
\ ****************************************************************************/

\ 128KB FDT buffer size is enough to accommodate 255 CPU cores and 1TB of
\ maxmem specification.
20000 VALUE size
: ibm,client-architecture-support         ( vec -- err? )
    \ Store require parameters in nvram
    \ to come back to right boot device
    \ Allocate memory for H_CALL
    size alloc-mem                        ( vec memaddr )
    swap over size                        ( memaddr vec memaddr size )
    \ make h_call to hypervisor
    hv-cas 0= IF                          ( memaddr )
	dup l@ 1 >= IF                    \ Version number >= 1
	    \ Make required changes
	    " /" find-node set-node
	    dup 4 + fdt-init
	    fdt-check-header
	    fdt-struct fdt-fix-cas-node
	    fdt-fix-cas-success NOT
	ELSE
	    FALSE
	THEN
    ELSE
	TRUE
    THEN
    >r size free-mem r>
;

\ *****************************************************************************
\ * Copyright (c) 2011 IBM Corporation
\ * All rights reserved.
\ * This program and the accompanying materials
\ * are made available under the terms of the BSD License
\ * which accompanies this distribution, and is available at
\ * http://www.opensource.org/licenses/bsd-license.php
\ *
\ * Contributors:
\ *     IBM Corporation - initial implementation
\ ****************************************************************************/

\ 2 MiB FDT buffer size is enough to accommodate 255 CPU cores
\ and 16 TiB of maxmem specification.
200000 CONSTANT cas-buffer-size
: ibm,client-architecture-support         ( vec -- err? )
    \ Store require parameters in nvram
    \ to come back to right boot device
    \ Allocate memory for H_CALL
    cas-buffer-size alloc-mem             ( vec memaddr )
    dup 0= IF ." out of memory during ibm,client-architecture-support" cr THEN
    swap over cas-buffer-size             ( memaddr vec memaddr size )
    \ make h_call to hypervisor
    hv-cas 0= IF                          ( memaddr )
	dup l@ 1 >= IF                    \ Version number >= 1
	    \ Make required changes
	    " /" find-node set-node
	    dup 4 + fdt-init
	    fdt-check-header
	    fdt-struct fdt-fix-cas-node
	    fdt-fix-cas-success NOT
	ELSE
	    FALSE
	THEN
    ELSE
	TRUE
    THEN
    >r cas-buffer-size free-mem r>
;

Increase temporary buffer size of ibm,client-architecture-support call
Increase temporary buffer size of ibm,client-architecture-support call

The buffer size that we currently use for the client-architecture-
support call currently only works if there is not more than 1 TiB
of hot-pluggable RAM for the guest. This will likely not be enough
in the near future, so increase the buffer size from 128 kiB to 2 MiB
instead. That should be enough to accomodate for 16 TiB of hot-pluggable
memory.
While we're at it, also rename the "size" variable to something more
specific (since it is put into the namespace of the root node), and
add a proper error message in case the alloc-mem fails.

Signed-off-by: Thomas Huth <9e65be74847981e55b2564b6266c57d86d3bac05@redhat.com>
Signed-off-by: Alexey Kardashevskiy <ac1fc56530d7d037e1ea666f130daca22d72f964@ozlabs.ru>
