Ejemplo n.º 1
0
int show_board_info(void)
{
	struct regmap *regmap;
	int nodeoffset, ret;
	ofnode node;
	unsigned int socinfo;

	/* find the offset of compatible node */
	nodeoffset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
						   "amlogic,meson-gx-ao-secure");
	if (nodeoffset < 0)
		return 0;

	/* check if chip-id is available */
	if (!fdt_getprop(gd->fdt_blob, nodeoffset, "amlogic,has-chip-id", NULL))
		return 0;

	/* get regmap from the syscon node */
	node = offset_to_ofnode(nodeoffset);
	regmap = syscon_node_to_regmap(node);
	if (IS_ERR(regmap)) {
		printf("%s: failed to get regmap\n", __func__);
		return 0;
	}

	/* read soc info */
	ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
	if (ret && !socinfo) {
		printf("%s: invalid chipid value\n", __func__);
		return 0;
	}

	/* print board information */
	print_board_model();
	printf("Soc:   Amlogic Meson %s (%s) Revision %x:%x (%x:%x)\n",
	       socinfo_to_soc_id(socinfo),
	       socinfo_to_package_id(socinfo),
	       socinfo_to_major(socinfo),
	       socinfo_to_minor(socinfo),
	       socinfo_to_pack(socinfo),
	       socinfo_to_misc(socinfo));

	return 0;
}
Ejemplo n.º 2
0
int __init meson_gx_socinfo_init(void)
{
	struct soc_device_attribute *soc_dev_attr;
	struct soc_device *soc_dev;
	struct device_node *np;
	struct regmap *regmap;
	unsigned int socinfo;
	struct device *dev;
	int ret;

	/* look up for chipid node */
	np = of_find_compatible_node(NULL, NULL, "amlogic,meson-gx-ao-secure");
	if (!np)
		return -ENODEV;

	/* check if interface is enabled */
	if (!of_device_is_available(np))
		return -ENODEV;

	/* check if chip-id is available */
	if (!of_property_read_bool(np, "amlogic,has-chip-id"))
		return -ENODEV;

	/* node should be a syscon */
	regmap = syscon_node_to_regmap(np);
	of_node_put(np);
	if (IS_ERR(regmap)) {
		pr_err("%s: failed to get regmap\n", __func__);
		return -ENODEV;
	}

	ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
	if (ret < 0)
		return ret;

	if (!socinfo) {
		pr_err("%s: invalid chipid value\n", __func__);
		return -EINVAL;
	}

	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
	if (!soc_dev_attr)
		return -ENODEV;

	soc_dev_attr->family = "Amlogic Meson";

	np = of_find_node_by_path("/");
	of_property_read_string(np, "model", &soc_dev_attr->machine);
	of_node_put(np);

	soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%x:%x - %x:%x",
					   socinfo_to_major(socinfo),
					   socinfo_to_minor(socinfo),
					   socinfo_to_pack(socinfo),
					   socinfo_to_misc(socinfo));
	soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%s (%s)",
					 socinfo_to_soc_id(socinfo),
					 socinfo_to_package_id(socinfo));

	soc_dev = soc_device_register(soc_dev_attr);
	if (IS_ERR(soc_dev)) {
		kfree(soc_dev_attr->revision);
		kfree_const(soc_dev_attr->soc_id);
		kfree(soc_dev_attr);
		return PTR_ERR(soc_dev);
	}
	dev = soc_device_to_device(soc_dev);

	dev_info(dev, "Amlogic Meson %s Revision %x:%x (%x:%x) Detected\n",
			soc_dev_attr->soc_id,
			socinfo_to_major(socinfo),
			socinfo_to_minor(socinfo),
			socinfo_to_pack(socinfo),
			socinfo_to_misc(socinfo));

	return 0;
}