ba90a8eb4f
nxge: cast page size fragments down to (int). If the vm's demand paging PAGE_SIZE is ever too big for that, we've got far bigger problems. ofw: move va_start() a little earlier. gcc-4.2 doesn't like us modifying the last arg before the va_start(). Approved by: re (rwatson)
811 lines
15 KiB
C
811 lines
15 KiB
C
/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
|
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|
|
/*-
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (C) 2000 Benno Rice.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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|
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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|
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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|
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#include <machine/stdarg.h>
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|
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#include <dev/ofw/openfirm.h>
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|
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MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
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static ihandle_t stdout;
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|
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/* Initialiser */
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|
|
void
|
|
OF_init(int (*openfirm)(void *))
|
|
{
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|
phandle_t chosen;
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|
|
set_openfirm_callback(openfirm);
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if ((chosen = OF_finddevice("/chosen")) == -1)
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|
OF_exit();
|
|
if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1)
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|
OF_exit();
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|
}
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|
|
|
void
|
|
OF_printf(const char *fmt, ...)
|
|
{
|
|
va_list va;
|
|
char buf[1024];
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|
|
|
va_start(va, fmt);
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|
vsprintf(buf, fmt, va);
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OF_write(stdout, buf, strlen(buf));
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va_end(va);
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}
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|
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/*
|
|
* Generic functions
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|
*/
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|
|
|
/* Test to see if a service exists. */
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|
int
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|
OF_test(char *name)
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|
{
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|
static struct {
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cell_t name;
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cell_t nargs;
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|
cell_t nreturns;
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cell_t service;
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|
cell_t missing;
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|
} args = {
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(cell_t)"test",
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1,
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1,
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|
};
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args.service = (cell_t)name;
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if (openfirmware(&args) == -1)
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return (-1);
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return (args.missing);
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|
}
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|
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int
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OF_interpret(char *cmd, int nreturns, ...)
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|
{
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|
va_list ap;
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static struct {
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cell_t name;
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cell_t nargs;
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|
cell_t nreturns;
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|
cell_t slot[16];
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|
} args = {
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(cell_t)"interpret",
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|
1,
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|
};
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cell_t status;
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int i = 0;
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va_start(ap, nreturns);
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args.nreturns = ++nreturns;
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args.slot[i++] = (cell_t)cmd;
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while (i < 1)
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|
args.slot[i++] = va_arg(ap, cell_t);
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if (openfirmware(&args) == -1) {
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va_end(ap);
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return (-1);
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|
}
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status = args.slot[i++];
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|
while (i < 1 + nreturns)
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|
*va_arg(ap, cell_t *) = args.slot[i++];
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va_end(ap);
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return (status);
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|
}
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|
|
/* Return firmware millisecond count. */
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|
int
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OF_milliseconds()
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|
{
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|
static struct {
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|
cell_t name;
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|
cell_t nargs;
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cell_t nreturns;
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|
cell_t ms;
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|
} args = {
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(cell_t)"milliseconds",
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0,
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1,
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|
};
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openfirmware(&args);
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return (args.ms);
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}
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|
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/*
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* Device tree functions
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|
*/
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/* Return the next sibling of this node or 0. */
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phandle_t
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OF_peer(phandle_t node)
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|
{
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|
static struct {
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|
cell_t name;
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cell_t nargs;
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|
cell_t nreturns;
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|
cell_t node;
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|
cell_t next;
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|
} args = {
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|
(cell_t)"peer",
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1,
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1,
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|
};
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args.node = node;
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if (openfirmware(&args) == -1)
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return (-1);
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|
return (args.next);
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|
}
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|
|
|
/* Return the first child of this node or 0. */
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|
phandle_t
|
|
OF_child(phandle_t node)
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|
{
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|
static struct {
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|
cell_t name;
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|
cell_t nargs;
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|
cell_t nreturns;
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|
cell_t node;
|
|
cell_t child;
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|
} args = {
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|
(cell_t)"child",
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|
1,
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|
1,
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|
};
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|
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|
args.node = node;
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|
if (openfirmware(&args) == -1)
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|
return (-1);
|
|
return (args.child);
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|
}
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|
|
|
/* Return the parent of this node or 0. */
|
|
phandle_t
|
|
OF_parent(phandle_t node)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t node;
|
|
cell_t parent;
|
|
} args = {
|
|
(cell_t)"parent",
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|
1,
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1,
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|
};
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|
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|
args.node = node;
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|
if (openfirmware(&args) == -1)
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|
return (-1);
|
|
return (args.parent);
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|
}
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|
|
|
/* Return the package handle that corresponds to an instance handle. */
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|
phandle_t
|
|
OF_instance_to_package(ihandle_t instance)
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|
{
|
|
static struct {
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|
cell_t name;
|
|
cell_t nargs;
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|
cell_t nreturns;
|
|
cell_t instance;
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|
cell_t package;
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} args = {
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(cell_t)"instance-to-package",
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1,
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1,
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|
};
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|
|
|
args.instance = instance;
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|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.package);
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|
}
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|
|
|
/* Get the length of a property of a package. */
|
|
int
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|
OF_getproplen(phandle_t package, char *propname)
|
|
{
|
|
static struct {
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|
cell_t name;
|
|
cell_t nargs;
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|
cell_t nreturns;
|
|
cell_t package;
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|
cell_t propname;
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|
cell_t proplen;
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|
} args = {
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|
(cell_t)"getproplen",
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|
2,
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|
1,
|
|
};
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|
|
|
args.package = package;
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|
args.propname = (cell_t)propname;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.proplen);
|
|
}
|
|
|
|
/* Get the value of a property of a package. */
|
|
int
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|
OF_getprop(phandle_t package, char *propname, void *buf, int buflen)
|
|
{
|
|
static struct {
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|
cell_t name;
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|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t propname;
|
|
cell_t buf;
|
|
cell_t buflen;
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|
cell_t size;
|
|
} args = {
|
|
(cell_t)"getprop",
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|
4,
|
|
1,
|
|
};
|
|
|
|
args.package = package;
|
|
args.propname = (cell_t)propname;
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|
args.buf = (cell_t)buf;
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|
args.buflen = buflen;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.size);
|
|
}
|
|
|
|
/*
|
|
* Store the value of a property of a package into newly allocated memory
|
|
* (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
|
|
* single element, the number of elements is return in number.
|
|
*/
|
|
int
|
|
OF_getprop_alloc(phandle_t package, char *propname, int elsz, void **buf)
|
|
{
|
|
int len;
|
|
|
|
*buf = NULL;
|
|
if ((len = OF_getproplen(package, propname)) == -1 ||
|
|
len % elsz != 0)
|
|
return (-1);
|
|
|
|
*buf = malloc(len, M_OFWPROP, M_WAITOK);
|
|
if (OF_getprop(package, propname, *buf, len) == -1) {
|
|
free(*buf, M_OFWPROP);
|
|
*buf = NULL;
|
|
return (-1);
|
|
}
|
|
return (len / elsz);
|
|
}
|
|
|
|
/* Get the next property of a package. */
|
|
int
|
|
OF_nextprop(phandle_t package, char *previous, char *buf)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t previous;
|
|
cell_t buf;
|
|
cell_t flag;
|
|
} args = {
|
|
(cell_t)"nextprop",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.package = package;
|
|
args.previous = (cell_t)previous;
|
|
args.buf = (cell_t)buf;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.flag);
|
|
}
|
|
|
|
/* Set the value of a property of a package. */
|
|
/* XXX Has a bug on FirePower */
|
|
int
|
|
OF_setprop(phandle_t package, char *propname, void *buf, int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t propname;
|
|
cell_t buf;
|
|
cell_t len;
|
|
cell_t size;
|
|
} args = {
|
|
(cell_t)"setprop",
|
|
4,
|
|
1,
|
|
};
|
|
|
|
args.package = package;
|
|
args.propname = (cell_t)propname;
|
|
args.buf = (cell_t)buf;
|
|
args.len = len;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.size);
|
|
}
|
|
|
|
/* Convert a device specifier to a fully qualified pathname. */
|
|
int
|
|
OF_canon(const char *device, char *buf, int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t device;
|
|
cell_t buf;
|
|
cell_t len;
|
|
cell_t size;
|
|
} args = {
|
|
(cell_t)"canon",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.device = (cell_t)device;
|
|
args.buf = (cell_t)buf;
|
|
args.len = len;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.size);
|
|
}
|
|
|
|
/* Return a package handle for the specified device. */
|
|
phandle_t
|
|
OF_finddevice(const char *device)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t device;
|
|
cell_t package;
|
|
} args = {
|
|
(cell_t)"finddevice",
|
|
1,
|
|
1,
|
|
};
|
|
|
|
args.device = (cell_t)device;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.package);
|
|
}
|
|
|
|
/* Return the fully qualified pathname corresponding to an instance. */
|
|
int
|
|
OF_instance_to_path(ihandle_t instance, char *buf, int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t buf;
|
|
cell_t len;
|
|
cell_t size;
|
|
} args = {
|
|
(cell_t)"instance-to-path",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.instance = instance;
|
|
args.buf = (cell_t)buf;
|
|
args.len = len;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.size);
|
|
}
|
|
|
|
/* Return the fully qualified pathname corresponding to a package. */
|
|
int
|
|
OF_package_to_path(phandle_t package, char *buf, int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t buf;
|
|
cell_t len;
|
|
cell_t size;
|
|
} args = {
|
|
(cell_t)"package-to-path",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.package = package;
|
|
args.buf = (cell_t)buf;
|
|
args.len = len;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.size);
|
|
}
|
|
|
|
/* Call the method in the scope of a given instance. */
|
|
int
|
|
OF_call_method(char *method, ihandle_t instance, int nargs, int nreturns, ...)
|
|
{
|
|
va_list ap;
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t method;
|
|
cell_t instance;
|
|
cell_t args_n_results[12];
|
|
} args = {
|
|
(cell_t)"call-method",
|
|
2,
|
|
1,
|
|
};
|
|
cell_t *cp;
|
|
int n;
|
|
|
|
if (nargs > 6)
|
|
return (-1);
|
|
args.nargs = nargs + 2;
|
|
args.nreturns = nreturns + 1;
|
|
args.method = (cell_t)method;
|
|
args.instance = instance;
|
|
va_start(ap, nreturns);
|
|
for (cp = args.args_n_results + (n = nargs); --n >= 0;)
|
|
*--cp = va_arg(ap, cell_t);
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
if (args.args_n_results[nargs])
|
|
return (args.args_n_results[nargs]);
|
|
for (cp = args.args_n_results + nargs + (n = args.nreturns); --n > 0;)
|
|
*va_arg(ap, cell_t *) = *--cp;
|
|
va_end(ap);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Device I/O functions
|
|
*/
|
|
|
|
/* Open an instance for a device. */
|
|
ihandle_t
|
|
OF_open(char *device)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t device;
|
|
cell_t instance;
|
|
} args = {
|
|
(cell_t)"open",
|
|
1,
|
|
1,
|
|
};
|
|
|
|
args.device = (cell_t)device;
|
|
if (openfirmware(&args) == -1 || args.instance == 0) {
|
|
return (-1);
|
|
}
|
|
return (args.instance);
|
|
}
|
|
|
|
/* Close an instance. */
|
|
void
|
|
OF_close(ihandle_t instance)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
} args = {
|
|
(cell_t)"close",
|
|
1,
|
|
};
|
|
|
|
args.instance = instance;
|
|
openfirmware(&args);
|
|
}
|
|
|
|
/* Read from an instance. */
|
|
int
|
|
OF_read(ihandle_t instance, void *addr, int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t addr;
|
|
cell_t len;
|
|
cell_t actual;
|
|
} args = {
|
|
(cell_t)"read",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.instance = instance;
|
|
args.addr = (cell_t)addr;
|
|
args.len = len;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
|
|
return (args.actual);
|
|
}
|
|
|
|
/* Write to an instance. */
|
|
int
|
|
OF_write(ihandle_t instance, void *addr, int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t addr;
|
|
cell_t len;
|
|
cell_t actual;
|
|
} args = {
|
|
(cell_t)"write",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.instance = instance;
|
|
args.addr = (cell_t)addr;
|
|
args.len = len;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.actual);
|
|
}
|
|
|
|
/* Seek to a position. */
|
|
int
|
|
OF_seek(ihandle_t instance, u_int64_t pos)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t poshi;
|
|
cell_t poslo;
|
|
cell_t status;
|
|
} args = {
|
|
(cell_t)"seek",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.instance = instance;
|
|
args.poshi = pos >> 32;
|
|
args.poslo = pos;
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (args.status);
|
|
}
|
|
|
|
/*
|
|
* Memory functions
|
|
*/
|
|
|
|
/* Claim an area of memory. */
|
|
void *
|
|
OF_claim(void *virt, u_int size, u_int align)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
cell_t align;
|
|
cell_t baseaddr;
|
|
} args = {
|
|
(cell_t)"claim",
|
|
3,
|
|
1,
|
|
};
|
|
|
|
args.virt = (cell_t)virt;
|
|
args.size = size;
|
|
args.align = align;
|
|
if (openfirmware(&args) == -1)
|
|
return ((void *)-1);
|
|
return ((void *)args.baseaddr);
|
|
}
|
|
|
|
/* Release an area of memory. */
|
|
void
|
|
OF_release(void *virt, u_int size)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
} args = {
|
|
(cell_t)"release",
|
|
2,
|
|
};
|
|
|
|
args.virt = (cell_t)virt;
|
|
args.size = size;
|
|
openfirmware(&args);
|
|
}
|
|
|
|
/*
|
|
* Control transfer functions
|
|
*/
|
|
|
|
/* Reset the system and call "boot <bootspec>". */
|
|
void
|
|
OF_boot(char *bootspec)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t bootspec;
|
|
} args = {
|
|
(cell_t)"boot",
|
|
1,
|
|
};
|
|
|
|
args.bootspec = (cell_t)bootspec;
|
|
openfirmware(&args);
|
|
for (;;) /* just in case */
|
|
;
|
|
}
|
|
|
|
/* Suspend and drop back to the Open Firmware interface. */
|
|
void
|
|
OF_enter()
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
} args = {
|
|
(cell_t)"enter",
|
|
};
|
|
|
|
openfirmware(&args);
|
|
/* We may come back. */
|
|
}
|
|
|
|
/* Shut down and drop back to the Open Firmware interface. */
|
|
void
|
|
OF_exit()
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
} args = {
|
|
(cell_t)"exit",
|
|
};
|
|
|
|
openfirmware(&args);
|
|
for (;;) /* just in case */
|
|
;
|
|
}
|
|
|
|
/* Free <size> bytes starting at <virt>, then call <entry> with <arg>. */
|
|
#if 0
|
|
void
|
|
OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
cell_t entry;
|
|
cell_t arg;
|
|
cell_t len;
|
|
} args = {
|
|
(cell_t)"chain",
|
|
5,
|
|
};
|
|
|
|
args.virt = (cell_t)virt;
|
|
args.size = size;
|
|
args.entry = (cell_t)entry;
|
|
args.arg = (cell_t)arg;
|
|
args.len = len;
|
|
openfirmware(&args);
|
|
}
|
|
#else
|
|
void
|
|
OF_chain(void *virt, u_int size,
|
|
void (*entry)(void *, u_int, void *, void *, u_int), void *arg, u_int len)
|
|
{
|
|
/*
|
|
* This is a REALLY dirty hack till the firmware gets this going
|
|
*/
|
|
#if 0
|
|
if (size > 0)
|
|
OF_release(virt, size);
|
|
#endif
|
|
entry(0, 0, openfirmware, arg, len);
|
|
}
|
|
#endif
|