Function dev_configure

src/device/device.c:480–511

* Configure devices on the devices tree. * * Starting at the root of the device tree, travel it recursively in two * passes. In the first pass, we compute and allocate resources (ranges) * required by each device. In the second pass, the resources ranges are * relocated to their final position and stored to the hardware. * * I/O resources grow upward. MEM resources grow downward. * * Sinc

 * struct.
 */
void dev_configure(void)
{
	const struct device *root;

	set_vga_bridge_bits();

	printk(BIOS_INFO, "Allocating resources...\n");

	root = &dev_root;

	/*
	 * Each domain should create resources which contain the entire address
	 * space for IO, MEM, and PREFMEM resources in the domain. The
	 * allocation of device resources will be done from this address space.
	 */

	/* Read the resources for the entire tree. */

	printk(BIOS_INFO, "Reading resources...\n");
	read_resources(root->downstream);
	printk(BIOS_INFO, "Done reading resources.\n");

	print_resource_tree(root, BIOS_SPEW, "After reading.");

	allocate_resources(root);

	assign_resources(root->downstream);
	printk(BIOS_INFO, "Done setting resources.\n");
	print_resource_tree(root, BIOS_SPEW, "After assigning values.");

	printk(BIOS_INFO, "Done allocating resources.\n");
}

/**
 * Enable devices on the device tree.