Esempio n. 1
0
static int __init opal_init(void)
{
	struct device_node *np, *consoles;
	int rc;

	opal_node = of_find_node_by_path("/ibm,opal");
	if (!opal_node) {
		pr_warn("Device node not found\n");
		return -ENODEV;
	}

	/* Register OPAL consoles if any ports */
	if (firmware_has_feature(FW_FEATURE_OPALv2))
		consoles = of_find_node_by_path("/ibm,opal/consoles");
	else
		consoles = of_node_get(opal_node);
	if (consoles) {
		for_each_child_of_node(consoles, np) {
			if (strcmp(np->name, "serial"))
				continue;
			of_platform_device_create(np, NULL, NULL);
		}
		of_node_put(consoles);
	}

	/* Create i2c platform devices */
	opal_i2c_create_devs();

	/* Setup a heatbeat thread if requested by OPAL */
	opal_init_heartbeat();

	/* Find all OPAL interrupts and request them */
	opal_irq_init(opal_node);

	/* Create "opal" kobject under /sys/firmware */
	rc = opal_sysfs_init();
	if (rc == 0) {
		/* Setup dump region interface */
		opal_dump_region_init();
		/* Setup error log interface */
		rc = opal_elog_init();
		/* Setup code update interface */
		opal_flash_init();
		/* Setup platform dump extract interface */
		opal_platform_dump_init();
		/* Setup system parameters interface */
		opal_sys_param_init();
		/* Setup message log interface. */
		opal_msglog_init();
	}

	/* Initialize OPAL IPMI backend */
	opal_ipmi_init(opal_node);

	return 0;
}
static int __init opal_init(void)
{
	struct device_node *np, *consoles;
	const __be32 *irqs;
	int rc, i, irqlen;

	opal_node = of_find_node_by_path("/ibm,opal");
	if (!opal_node) {
		pr_warn("opal: Node not found\n");
		return -ENODEV;
	}

	/* Register OPAL consoles if any ports */
	if (firmware_has_feature(FW_FEATURE_OPALv2))
		consoles = of_find_node_by_path("/ibm,opal/consoles");
	else
		consoles = of_node_get(opal_node);
	if (consoles) {
		for_each_child_of_node(consoles, np) {
			if (strcmp(np->name, "serial"))
				continue;
			of_platform_device_create(np, NULL, NULL);
		}
		of_node_put(consoles);
	}

	/* Find all OPAL interrupts and request them */
	irqs = of_get_property(opal_node, "opal-interrupts", &irqlen);
	pr_debug("opal: Found %d interrupts reserved for OPAL\n",
		 irqs ? (irqlen / 4) : 0);
	opal_irq_count = irqlen / 4;
	opal_irqs = kzalloc(opal_irq_count * sizeof(unsigned int), GFP_KERNEL);
	for (i = 0; irqs && i < (irqlen / 4); i++, irqs++) {
		unsigned int hwirq = be32_to_cpup(irqs);
		unsigned int irq = irq_create_mapping(NULL, hwirq);
		if (irq == NO_IRQ) {
			pr_warning("opal: Failed to map irq 0x%x\n", hwirq);
			continue;
		}
		rc = request_irq(irq, opal_interrupt, 0, "opal", NULL);
		if (rc)
			pr_warning("opal: Error %d requesting irq %d"
				   " (0x%x)\n", rc, irq, hwirq);
		opal_irqs[i] = irq;
	}

	/* Create "opal" kobject under /sys/firmware */
	rc = opal_sysfs_init();
	if (rc == 0) {
		/* Setup code update interface */
		opal_flash_init();
	}

	return 0;
}