146 lines
3.4 KiB
C++
146 lines
3.4 KiB
C++
/*
|
|
* \brief Genode C API config functions needed by OKLinux
|
|
* \author Stefan Kalkowski
|
|
* \date 2009-05-19
|
|
*
|
|
* OKLinux includes several stub drivers, used as frontends to the Genode
|
|
* framework, e.g. framebuffer-driver or rom-file block-driver.
|
|
* Due to the strong bond of these drivers with the Genode framework,
|
|
* they should be configured using Genode's configuration format and
|
|
* not the kernel commandline.
|
|
* A valid configuration example can be found in 'config/init_config'
|
|
* within this repository.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2009-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
/* Genode includes */
|
|
#include <base/printf.h>
|
|
#include <base/env.h>
|
|
#include <os/config.h>
|
|
|
|
#include <oklx_screens.h>
|
|
|
|
|
|
static Genode::Xml_node node(const char* name)
|
|
{
|
|
Genode::Xml_node config_node = Genode::config()->xml_node();
|
|
|
|
for (unsigned i = 0; i < config_node.num_sub_nodes(); i++) {
|
|
Genode::Xml_node node = config_node.sub_node(i);
|
|
if(node.has_type(name))
|
|
return node;
|
|
}
|
|
throw Genode::Xml_node::Nonexistent_sub_node();
|
|
}
|
|
|
|
|
|
static void content(const char* node_name, const char *attr_name,
|
|
char *buf, Genode::size_t sz)
|
|
{
|
|
*buf = 0;
|
|
try {
|
|
Genode::Xml_node _node = node(node_name);
|
|
_node.attribute(attr_name).value(buf, sz);
|
|
} catch (Genode::Xml_node::Invalid_syntax) {
|
|
PWRN("Malformed entry in Linux config.");
|
|
} catch (...) { }
|
|
}
|
|
|
|
|
|
Screen_array::Screen_array()
|
|
{
|
|
try {
|
|
Genode::Xml_node scr_node = node("screens");
|
|
for (unsigned i = 0; i < SIZE; i++) {
|
|
if (i >= scr_node.num_sub_nodes())
|
|
_screens[i] = (Screen*) 0;
|
|
else {
|
|
Genode::Xml_node n = scr_node.sub_node(i);
|
|
if(n.has_type("framebuffer"))
|
|
_screens[i] = new (Genode::env()->heap()) Simple_screen();
|
|
else if(n.has_type("nitpicker"))
|
|
_screens[i] = new (Genode::env()->heap()) Nitpicker_screen();
|
|
else
|
|
PWRN("Ignoring unknown tag in screen section");
|
|
}
|
|
}
|
|
} catch (Genode::Xml_node::Invalid_syntax) {
|
|
PWRN("Malformed entry in Linux config.");
|
|
} catch (Genode::Xml_node::Nonexistent_sub_node) {
|
|
PWRN("No screen section in config");
|
|
}
|
|
}
|
|
|
|
|
|
extern "C" {
|
|
#include <genode/config.h>
|
|
|
|
char* genode_config_cmdline()
|
|
{
|
|
static char cmd_line[512];
|
|
static bool initialized = false;
|
|
if (!initialized) {
|
|
content("commandline", "args", cmd_line, sizeof(cmd_line));
|
|
initialized = true;
|
|
}
|
|
return Genode::strlen(cmd_line) ? cmd_line : 0;
|
|
}
|
|
|
|
|
|
char* genode_config_initrd()
|
|
{
|
|
static char initrd[64];
|
|
static bool initialized = false;
|
|
if (!initialized) {
|
|
content("initrd", "name", initrd, sizeof(initrd));
|
|
initialized = true;
|
|
}
|
|
return Genode::strlen(initrd) ? initrd : 0;
|
|
}
|
|
|
|
|
|
int genode_config_audio()
|
|
{
|
|
try {
|
|
node("audio");
|
|
return 1;
|
|
} catch (Genode::Xml_node::Invalid_syntax) {
|
|
PWRN("Malformed entry in Linux config.");
|
|
} catch (Genode::Xml_node::Nonexistent_sub_node) {
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int genode_config_nic()
|
|
{
|
|
try {
|
|
node("nic");
|
|
return 1;
|
|
} catch (Genode::Xml_node::Invalid_syntax) {
|
|
PWRN("Malformed entry in Linux config.");
|
|
} catch (Genode::Xml_node::Nonexistent_sub_node) {
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int genode_config_block()
|
|
{
|
|
try {
|
|
node("block");
|
|
return 1;
|
|
} catch (Genode::Xml_node::Invalid_syntax) {
|
|
PWRN("Malformed entry in Linux config.");
|
|
} catch (Genode::Xml_node::Nonexistent_sub_node) {
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
} // extern "C"
|