freebsd-dev/usr.sbin/config/config.y

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%union {
char *str;
int val;
struct file_list *file;
}
%token ARCH
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%token COMMA
%token CONFIG
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%token CPU
%token NOCPU
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%token DEVICE
%token NODEVICE
%token ENV
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%token EQUALS
%token PLUSEQUALS
Borrow phk's axe and apply the next stage of config(8)'s evolution. Use Warner Losh's "hint" driver to decode ascii strings to fill the resource table at boot time. config(8) no longer generates an ioconf.c table - ie: the configuration no longer has to be compiled into the kernel. You can reconfigure your isa devices with the likes of this at loader(8) time: set hint.ed.0.port=0x320 userconfig will be rewritten to use this style interface one day and will move to /boot/userconfig.4th or something like that. It is still possible to statically compile in a set of hints into a kernel if you do not wish to use loader(8). See the "hints" directive in GENERIC as an example. All device wiring has been moved out of config(8). There is a set of helper scripts (see i386/conf/gethints.pl, and the same for alpha and pc98) that extract the 'at isa? port foo irq bar' from the old files and produces a hints file. If you install this file as /boot/device.hints (and update /boot/defaults/loader.conf - You can do a build/install in sys/boot) then loader will load it automatically for you. You can also compile in the hints directly with: hints "device.hints" as well. There are a few things that I'm not too happy with yet. Under this scheme, things like LINT would no longer be useful as "documentation" of settings. I have renamed this file to 'NOTES' and stored the example hints strings in it. However... this is not something that config(8) understands, so there is a script that extracts the build-specific data from the documentation file (NOTES) to produce a LINT that can be config'ed and built. A stack of man4 pages will need updating. :-/ Also, since there is no longer a difference between 'device' and 'pseudo-device' I collapsed the two together, and the resulting 'device' takes a 'number of units' for devices that still have it statically allocated. eg: 'device fe 4' will compile the fe driver with NFE set to 4. You can then set hints for 4 units (0 - 3). Also note that 'device fe0' will be interpreted as "zero units of 'fe'" which would be bad, so there is a config warning for this. This is only needed for old drivers that still have static limits on numbers of units. All the statically limited drivers that I could find were marked. Please exercise EXTREME CAUTION when transitioning! Moral support by: phk, msmith, dfr, asmodai, imp, and others
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%token HINTS
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%token IDENT
%token MAXUSERS
%token PROFILE
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%token OPTIONS
%token NOOPTION
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%token MAKEOPTIONS
%token NOMAKEOPTION
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%token SEMICOLON
%token INCLUDE
%token FILES
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%token <str> ID
%token <val> NUMBER
%type <str> Save_id
%type <str> Opt_value
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%type <str> Dev
%token <str> PATH
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%{
/*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
*
* @(#)config.y 8.1 (Berkeley) 6/6/93
* $FreeBSD$
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*/
#include <assert.h>
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#include <ctype.h>
#include <err.h>
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#include <stdio.h>
#include <string.h>
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#include "config.h"
struct device_head dtab;
char *ident;
char *env;
int envmode;
int hintmode;
int yyline;
const char *yyfile;
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struct file_list_head ftab;
struct files_name_head fntab;
char errbuf[80];
int maxusers;
#define ns(s) strdup(s)
int include(const char *, int);
void yyerror(const char *s);
int yywrap(void);
static void newdev(char *name);
static void newfile(char *name);
static void rmdev_schedule(struct device_head *dh, char *name);
static void newopt(struct opt_head *list, char *name, char *value, int append);
static void rmopt_schedule(struct opt_head *list, char *name);
static char *
devopt(char *dev)
{
char *ret = malloc(strlen(dev) + 5);
sprintf(ret, "DEV_%s", dev);
raisestr(ret);
return ret;
}
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%}
%%
Configuration:
Many_specs
;
Many_specs:
Many_specs Spec
|
/* lambda */
;
Spec:
Device_spec SEMICOLON
|
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Config_spec SEMICOLON
|
INCLUDE PATH SEMICOLON {
if (incignore == 0)
include($2, 0);
};
|
INCLUDE ID SEMICOLON {
if (incignore == 0)
include($2, 0);
};
|
FILES ID SEMICOLON { newfile($2); };
|
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SEMICOLON
|
error SEMICOLON
;
Config_spec:
ARCH Save_id {
if (machinename != NULL && !eq($2, machinename))
errx(1, "%s:%d: only one machine directive is allowed",
yyfile, yyline);
machinename = $2;
machinearch = $2;
} |
ARCH Save_id Save_id {
if (machinename != NULL &&
!(eq($2, machinename) && eq($3, machinearch)))
errx(1, "%s:%d: only one machine directive is allowed",
yyfile, yyline);
machinename = $2;
machinearch = $3;
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} |
CPU Save_id {
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struct cputype *cp =
(struct cputype *)calloc(1, sizeof (struct cputype));
if (cp == NULL)
err(EXIT_FAILURE, "calloc");
cp->cpu_name = $2;
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SLIST_INSERT_HEAD(&cputype, cp, cpu_next);
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} |
NOCPU Save_id {
struct cputype *cp, *cp2;
SLIST_FOREACH_SAFE(cp, &cputype, cpu_next, cp2) {
if (eq(cp->cpu_name, $2)) {
SLIST_REMOVE(&cputype, cp, cputype, cpu_next);
free(cp);
}
}
} |
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OPTIONS Opt_list
|
NOOPTION Save_id { rmopt_schedule(&opt, $2); } |
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MAKEOPTIONS Mkopt_list
|
NOMAKEOPTION Save_id { rmopt_schedule(&mkopt, $2); } |
IDENT ID { ident = $2; } |
System_spec
|
MAXUSERS NUMBER { maxusers = $2; } |
PROFILE NUMBER { profiling = $2; } |
ENV ID {
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env = $2;
envmode = 1;
} |
HINTS ID {
struct hint *hint;
hint = (struct hint *)calloc(1, sizeof (struct hint));
if (hint == NULL)
err(EXIT_FAILURE, "calloc");
hint->hint_name = $2;
STAILQ_INSERT_TAIL(&hints, hint, hint_next);
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hintmode = 1;
}
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System_spec:
CONFIG System_id System_parameter_list {
errx(1, "%s:%d: root/dump/swap specifications obsolete",
yyfile, yyline);
}
|
CONFIG System_id
;
System_id:
Save_id { newopt(&mkopt, ns("KERNEL"), $1, 0); };
System_parameter_list:
System_parameter_list ID
| ID
;
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Opt_list:
Opt_list COMMA Option
|
Option
;
Option:
Save_id {
newopt(&opt, $1, NULL, 0);
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if (strchr($1, '=') != NULL)
errx(1, "%s:%d: The `=' in options should not be "
"quoted", yyfile, yyline);
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} |
Save_id EQUALS Opt_value {
newopt(&opt, $1, $3, 0);
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} ;
Opt_value:
ID { $$ = $1; } |
NUMBER {
char buf[80];
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(void) snprintf(buf, sizeof(buf), "%d", $1);
$$ = ns(buf);
} ;
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Save_id:
ID { $$ = $1; }
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;
Mkopt_list:
Mkopt_list COMMA Mkoption
|
Mkoption
;
Mkoption:
Save_id { newopt(&mkopt, $1, ns(""), 0); } |
Save_id EQUALS { newopt(&mkopt, $1, ns(""), 0); } |
Save_id EQUALS Opt_value { newopt(&mkopt, $1, $3, 0); } |
Save_id PLUSEQUALS Opt_value { newopt(&mkopt, $1, $3, 1); } ;
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Dev:
ID { $$ = $1; }
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;
Device_spec:
DEVICE Dev_list
|
NODEVICE NoDev_list
;
Dev_list:
Dev_list COMMA Device
|
Device
;
NoDev_list:
NoDev_list COMMA NoDevice
|
NoDevice
;
Device:
Dev {
newopt(&opt, devopt($1), ns("1"), 0);
/* and the device part */
newdev($1);
}
NoDevice:
Dev {
char *s = devopt($1);
rmopt_schedule(&opt, s);
free(s);
/* and the device part */
rmdev_schedule(&dtab, $1);
Borrow phk's axe and apply the next stage of config(8)'s evolution. Use Warner Losh's "hint" driver to decode ascii strings to fill the resource table at boot time. config(8) no longer generates an ioconf.c table - ie: the configuration no longer has to be compiled into the kernel. You can reconfigure your isa devices with the likes of this at loader(8) time: set hint.ed.0.port=0x320 userconfig will be rewritten to use this style interface one day and will move to /boot/userconfig.4th or something like that. It is still possible to statically compile in a set of hints into a kernel if you do not wish to use loader(8). See the "hints" directive in GENERIC as an example. All device wiring has been moved out of config(8). There is a set of helper scripts (see i386/conf/gethints.pl, and the same for alpha and pc98) that extract the 'at isa? port foo irq bar' from the old files and produces a hints file. If you install this file as /boot/device.hints (and update /boot/defaults/loader.conf - You can do a build/install in sys/boot) then loader will load it automatically for you. You can also compile in the hints directly with: hints "device.hints" as well. There are a few things that I'm not too happy with yet. Under this scheme, things like LINT would no longer be useful as "documentation" of settings. I have renamed this file to 'NOTES' and stored the example hints strings in it. However... this is not something that config(8) understands, so there is a script that extracts the build-specific data from the documentation file (NOTES) to produce a LINT that can be config'ed and built. A stack of man4 pages will need updating. :-/ Also, since there is no longer a difference between 'device' and 'pseudo-device' I collapsed the two together, and the resulting 'device' takes a 'number of units' for devices that still have it statically allocated. eg: 'device fe 4' will compile the fe driver with NFE set to 4. You can then set hints for 4 units (0 - 3). Also note that 'device fe0' will be interpreted as "zero units of 'fe'" which would be bad, so there is a config warning for this. This is only needed for old drivers that still have static limits on numbers of units. All the statically limited drivers that I could find were marked. Please exercise EXTREME CAUTION when transitioning! Moral support by: phk, msmith, dfr, asmodai, imp, and others
2000-06-13 22:28:50 +00:00
} ;
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%%
void
yyerror(const char *s)
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{
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errx(1, "%s:%d: %s", yyfile, yyline + 1, s);
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}
int
yywrap(void)
{
if (found_defaults) {
if (freopen(PREFIX, "r", stdin) == NULL)
err(2, "%s", PREFIX);
yyfile = PREFIX;
yyline = 0;
found_defaults = 0;
return 0;
}
return 1;
}
/*
* Add a new file to the list of files.
*/
static void
newfile(char *name)
{
struct files_name *nl;
nl = (struct files_name *) calloc(1, sizeof *nl);
if (nl == NULL)
err(EXIT_FAILURE, "calloc");
nl->f_name = name;
STAILQ_INSERT_TAIL(&fntab, nl, f_next);
}
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/*
* Find a device in the list of devices.
*/
static struct device *
finddev(struct device_head *dlist, char *name)
{
struct device *dp;
STAILQ_FOREACH(dp, dlist, d_next)
if (eq(dp->d_name, name))
return (dp);
return (NULL);
}
/*
* Add a device to the list of devices.
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*/
static void
newdev(char *name)
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{
Borrow phk's axe and apply the next stage of config(8)'s evolution. Use Warner Losh's "hint" driver to decode ascii strings to fill the resource table at boot time. config(8) no longer generates an ioconf.c table - ie: the configuration no longer has to be compiled into the kernel. You can reconfigure your isa devices with the likes of this at loader(8) time: set hint.ed.0.port=0x320 userconfig will be rewritten to use this style interface one day and will move to /boot/userconfig.4th or something like that. It is still possible to statically compile in a set of hints into a kernel if you do not wish to use loader(8). See the "hints" directive in GENERIC as an example. All device wiring has been moved out of config(8). There is a set of helper scripts (see i386/conf/gethints.pl, and the same for alpha and pc98) that extract the 'at isa? port foo irq bar' from the old files and produces a hints file. If you install this file as /boot/device.hints (and update /boot/defaults/loader.conf - You can do a build/install in sys/boot) then loader will load it automatically for you. You can also compile in the hints directly with: hints "device.hints" as well. There are a few things that I'm not too happy with yet. Under this scheme, things like LINT would no longer be useful as "documentation" of settings. I have renamed this file to 'NOTES' and stored the example hints strings in it. However... this is not something that config(8) understands, so there is a script that extracts the build-specific data from the documentation file (NOTES) to produce a LINT that can be config'ed and built. A stack of man4 pages will need updating. :-/ Also, since there is no longer a difference between 'device' and 'pseudo-device' I collapsed the two together, and the resulting 'device' takes a 'number of units' for devices that still have it statically allocated. eg: 'device fe 4' will compile the fe driver with NFE set to 4. You can then set hints for 4 units (0 - 3). Also note that 'device fe0' will be interpreted as "zero units of 'fe'" which would be bad, so there is a config warning for this. This is only needed for old drivers that still have static limits on numbers of units. All the statically limited drivers that I could find were marked. Please exercise EXTREME CAUTION when transitioning! Moral support by: phk, msmith, dfr, asmodai, imp, and others
2000-06-13 22:28:50 +00:00
struct device *np;
if (finddev(&dtab, name)) {
fprintf(stderr,
"WARNING: duplicate device `%s' encountered.\n", name);
return;
}
np = (struct device *) calloc(1, sizeof *np);
if (np == NULL)
err(EXIT_FAILURE, "calloc");
np->d_name = name;
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STAILQ_INSERT_TAIL(&dtab, np, d_next);
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}
/*
* Schedule a device to removal.
*/
static void
rmdev_schedule(struct device_head *dh, char *name)
{
struct device *dp;
dp = finddev(dh, name);
if (dp != NULL) {
STAILQ_REMOVE(dh, dp, device, d_next);
free(dp->d_name);
free(dp);
}
}
/*
* Find an option in the list of options.
*/
static struct opt *
findopt(struct opt_head *list, char *name)
{
struct opt *op;
SLIST_FOREACH(op, list, op_next)
if (eq(op->op_name, name))
return (op);
return (NULL);
}
/*
* Add an option to the list of options.
*/
static void
newopt(struct opt_head *list, char *name, char *value, int append)
{
struct opt *op, *op2;
/*
* Ignore inclusions listed explicitly for configuration files.
*/
if (eq(name, OPT_AUTOGEN)) {
incignore = 1;
return;
}
op2 = findopt(list, name);
if (op2 != NULL && !append) {
fprintf(stderr,
"WARNING: duplicate option `%s' encountered.\n", name);
return;
}
op = (struct opt *)calloc(1, sizeof (struct opt));
if (op == NULL)
err(EXIT_FAILURE, "calloc");
op->op_name = name;
op->op_ownfile = 0;
op->op_value = value;
if (op2 != NULL) {
while (SLIST_NEXT(op2, op_append) != NULL)
op2 = SLIST_NEXT(op2, op_append);
SLIST_NEXT(op2, op_append) = op;
} else
SLIST_INSERT_HEAD(list, op, op_next);
}
/*
* Remove an option from the list of options.
*/
static void
rmopt_schedule(struct opt_head *list, char *name)
{
struct opt *op;
op = findopt(list, name);
if (op != NULL) {
SLIST_REMOVE(list, op, opt, op_next);
free(op->op_name);
free(op);
}
}