C++ (Cpp) target_dev_tree_memの例

コード例 #1

ファイル: dev_tree.c プロジェクト: daxgr/android_bootable_bootloader_lk

/* Top level function that updates the device tree. */
int update_device_tree(void *fdt, const char *cmdline,
					   void *ramdisk, uint32_t ramdisk_size)
{
	int ret = 0;
	uint32_t offset;

	/* Check the device tree header */
	ret = fdt_check_header(fdt);
	if (ret)
	{
		dprintf(CRITICAL, "Invalid device tree header \n");
		return ret;
	}

	/* Add padding to make space for new nodes and properties. */
	ret = fdt_open_into(fdt, fdt, fdt_totalsize(fdt) + DTB_PAD_SIZE);
	if (ret!= 0)
	{
		dprintf(CRITICAL, "Failed to move/resize dtb buffer: %d\n", ret);
		return ret;
	}

	/* Get offset of the memory node */
	ret = fdt_path_offset(fdt, "/memory");
	if (ret < 0)
	{
		dprintf(CRITICAL, "Could not find memory node.\n");
		return ret;
	}

	offset = ret;

	ret = target_dev_tree_mem(fdt, offset);
	if(ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update memory node\n");
		return ret;
	}

	/* Get offset of the chosen node */
	ret = fdt_path_offset(fdt, "/chosen");
	if (ret < 0)
	{
		dprintf(CRITICAL, "Could not find chosen node.\n");
		return ret;
	}

	offset = ret;
	/* Adding the cmdline to the chosen node */
	ret = fdt_setprop_string(fdt, offset, (const char*)"bootargs", (const void*)cmdline);
	if (ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update chosen node [bootargs]\n");
		return ret;
	}

	/* Adding the initrd-start to the chosen node */
	ret = fdt_setprop_u32(fdt, offset, "linux,initrd-start", (uint32_t)ramdisk);
	if (ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update chosen node [linux,initrd-start]\n");
		return ret;
	}

	/* Adding the initrd-end to the chosen node */
	ret = fdt_setprop_u32(fdt, offset, "linux,initrd-end", ((uint32_t)ramdisk + ramdisk_size));
	if (ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update chosen node [linux,initrd-end]\n");
		return ret;
	}

	fdt_pack(fdt);

	return ret;
}

コード例 #2

ファイル: dev_tree.c プロジェクト: thornbirdblue/8064_project_lk

/* Top level function that updates the device tree. */
int update_device_tree(void *fdt, const char *cmdline,
					   void *ramdisk, uint32_t ramdisk_size)
{
	int ret = 0;
	uint32_t offset;

	/* Check the device tree header */
	ret = fdt_check_header(fdt);
	if (ret)
	{
		dprintf(CRITICAL, "Invalid device tree header \n");
		return ret;
	}

	/* Get offset of the memory node */
	ret = fdt_path_offset(fdt, "/memory");
	if (ret < 0)
	{
		dprintf(CRITICAL, "Could not find memory node.\n");
		return ret;
	}

	offset = ret;

	ret = target_dev_tree_mem(fdt, offset);
	if(ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update memory node\n");
		return ret;
	}

	/* Get offset of the chosen node */
	ret = fdt_path_offset(fdt, "/chosen");
	if (ret < 0)
	{
		dprintf(CRITICAL, "Could not find chosen node.\n");
		return ret;
	}

	offset = ret;
	/* Adding the cmdline to the chosen node */
	ret = fdt_setprop_string(fdt, offset, (const char*)"bootargs", (const void*)cmdline);
	if (ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update chosen node [bootargs]\n");
		return ret;
	}

	/* Adding the initrd-start to the chosen node */
	ret = fdt_setprop_u32(fdt, offset, "linux,initrd-start", (uint32_t)ramdisk);
	if (ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update chosen node [linux,initrd-start]\n");
		return ret;
	}

	/* Adding the initrd-end to the chosen node */
	ret = fdt_setprop_u32(fdt, offset, "linux,initrd-end", ((uint32_t)ramdisk + ramdisk_size));
	if (ret)
	{
		dprintf(CRITICAL, "ERROR: Cannot update chosen node [linux,initrd-end]\n");
		return ret;
	}

	fdt_pack(fdt);

	return ret;
}