static bool find_by_address(u64 base_address)
{
struct device_node *dn = of_find_all_nodes(NULL);
struct resource res;
while (dn) {
if (!of_address_to_resource(dn, 0, &res)) {
if (res.start == base_address) {
of_node_put(dn);
return true;
}
}
dn = of_find_all_nodes(dn);
}
return false;
}
void lite52xx_show_cpuinfo(struct seq_file *m)
{
struct device_node* np = of_find_all_nodes(NULL);
const char *model = NULL;
if (np)
model = get_property(np, "model", NULL);
seq_printf(m, "vendor\t\t: Freescale Semiconductor\n");
seq_printf(m, "machine\t\t: %s\n", model ? model : "unknown");
of_node_put(np);
}
static void __iomem *gator_events_l2c310_probe(void)
{
phys_addr_t variants[] = {
#if defined(CONFIG_ARCH_EXYNOS4) || defined(CONFIG_ARCH_S5PV310)
0x10502000,
#endif
#if defined(CONFIG_ARCH_OMAP4)
0x48242000,
#endif
#if defined(CONFIG_ARCH_TEGRA)
0x50043000,
#endif
#if defined(CONFIG_ARCH_U8500)
0xa0412000,
#endif
#if defined(CONFIG_ARCH_VEXPRESS)
0x1e00a000, /* A9x4 core tile (HBI-0191) */
0x2c0f0000, /* New memory map tiles */
#endif
};
int i;
void __iomem *base;
#if defined(CONFIG_OF)
struct device_node *node = of_find_all_nodes(NULL);
if (node) {
of_node_put(node);
node = of_find_compatible_node(NULL, NULL, "arm,pl310-cache");
base = of_iomap(node, 0);
of_node_put(node);
return base;
}
#endif
for (i = 0; i < ARRAY_SIZE(variants); i++) {
base = ioremap(variants[i], SZ_4K);
if (base) {
u32 cache_id = readl(base + L2X0_CACHE_ID);
if ((cache_id & 0xff0003c0) == 0x410000c0)
return base;
iounmap(base);
}
}
return NULL;
}
static int mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
{
irq_hw_number_t hwirq;
const struct irq_domain_ops *ops = mpic->irqhost->ops;
struct device_node *np;
int flags, index, i;
struct of_phandle_args oirq;
pr_debug("mpic: found U3, guessing msi allocator setup\n");
/* Reserve source numbers we know are reserved in the HW.
*
* This is a bit of a mix of U3 and U4 reserves but that's going
* to work fine, we have plenty enugh numbers left so let's just
* mark anything we don't like reserved.
*/
for (i = 0; i < 8; i++)
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, i);
for (i = 42; i < 46; i++)
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, i);
for (i = 100; i < 105; i++)
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, i);
for (i = 124; i < mpic->num_sources; i++)
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, i);
np = NULL;
while ((np = of_find_all_nodes(np))) {
pr_debug("mpic: mapping hwirqs for %s\n", np->full_name);
index = 0;
while (of_irq_parse_one(np, index++, &oirq) == 0) {
ops->xlate(mpic->irqhost, NULL, oirq.args,
oirq.args_count, &hwirq, &flags);
msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, hwirq);
}
}
return 0;
}
/* This doesn't need to be called if you don't have any special workaround
* flags to pass
*/
void of_irq_map_init(unsigned int flags)
{
of_irq_workarounds = flags;
/* OldWorld, don't bother looking at other things */
if (flags & OF_IMAP_OLDWORLD_MAC)
return;
/* If we don't have phandles, let's try to locate a default interrupt
* controller (happens when booting with BootX). We do a first match
* here, hopefully, that only ever happens on machines with one
* controller.
*/
if (flags & OF_IMAP_NO_PHANDLE) {
struct device_node *np;
for(np = NULL; (np = of_find_all_nodes(np)) != NULL;) {
if (of_get_property(np, "interrupt-controller", NULL)
== NULL)
continue;
/* Skip /chosen/interrupt-controller */
if (strcmp(np->name, "chosen") == 0)
continue;
/* It seems like at least one person on this planet wants
* to use BootX on a machine with an AppleKiwi controller
* which happens to pretend to be an interrupt
* controller too.
*/
if (strcmp(np->name, "AppleKiwi") == 0)
continue;
/* I think we found one ! */
of_irq_dflt_pic = np;
break;
}
}
}
static int of_get_gpiochip_base(struct device_node *np)
{
struct device_node *gc = NULL;
int gpiochip_base = 0;
while ((gc = of_find_all_nodes(gc))) {
if (!of_get_property(gc, "gpio-controller", NULL))
continue;
if (gc != np) {
gpiochip_base += ARCH_OF_GPIOS_PER_CHIP;
continue;
}
of_node_put(gc);
if (gpiochip_base >= ARCH_OF_GPIOS_END)
return -ENOSPC;
return gpiochip_base;
}
return -ENOENT;
}
/*
* This is called very early, as part of setup_system() or eventually
* setup_arch(), basically before anything else in this file. This function
* will try to build a list of all the available 8250-compatible serial ports
* in the machine using the Open Firmware device-tree. It currently only deals
* with ISA and PCI busses but could be extended. It allows a very early boot
* console to be initialized, that list is also used later to provide 8250 with
* the machine non-PCI ports and to properly pick the default console port
*/
void __init find_legacy_serial_ports(void)
{
struct device_node *np, *stdout = NULL;
const char *path;
int index;
DBG(" -> find_legacy_serial_port()\n");
/* Now find out if one of these is out firmware console */
path = of_get_property(of_chosen, "linux,stdout-path", NULL);
if (path != NULL) {
stdout = of_find_node_by_path(path);
if (stdout)
DBG("stdout is %s\n", stdout->full_name);
} else {
DBG(" no linux,stdout-path !\n");
}
/* First fill our array with SOC ports */
for (np = NULL; (np = of_find_compatible_node(np, "serial", "ns16550")) != NULL;) {
struct device_node *soc = of_get_parent(np);
if (soc && !strcmp(soc->type, "soc")) {
index = add_legacy_soc_port(np, np);
if (index >= 0 && np == stdout)
legacy_serial_console = index;
}
of_node_put(soc);
}
/* First fill our array with ISA ports */
for (np = NULL; (np = of_find_node_by_type(np, "serial"));) {
struct device_node *isa = of_get_parent(np);
if (isa && !strcmp(isa->name, "isa")) {
index = add_legacy_isa_port(np, isa);
if (index >= 0 && np == stdout)
legacy_serial_console = index;
}
of_node_put(isa);
}
/* First fill our array with tsi-bridge ports */
for (np = NULL; (np = of_find_compatible_node(np, "serial", "ns16550")) != NULL;) {
struct device_node *tsi = of_get_parent(np);
if (tsi && !strcmp(tsi->type, "tsi-bridge")) {
index = add_legacy_soc_port(np, np);
if (index >= 0 && np == stdout)
legacy_serial_console = index;
}
of_node_put(tsi);
}
/* First fill our array with opb bus ports */
for (np = NULL; (np = of_find_compatible_node(np, "serial", "ns16750")) != NULL;) {
struct device_node *opb = of_get_parent(np);
if (opb && !strcmp(opb->type, "opb")) {
index = add_legacy_soc_port(np, np);
if (index >= 0 && np == stdout)
legacy_serial_console = index;
}
of_node_put(opb);
}
#ifdef CONFIG_PCI
/* Next, try to locate PCI ports */
for (np = NULL; (np = of_find_all_nodes(np));) {
struct device_node *pci, *parent = of_get_parent(np);
if (parent && !strcmp(parent->name, "isa")) {
of_node_put(parent);
continue;
}
if (strcmp(np->name, "serial") && strcmp(np->type, "serial")) {
of_node_put(parent);
continue;
}
/* Check for known pciclass, and also check wether we have
* a device with child nodes for ports or not
*/
if (of_device_is_compatible(np, "pciclass,0700") ||
of_device_is_compatible(np, "pciclass,070002"))
pci = np;
else if (of_device_is_compatible(parent, "pciclass,0700") ||
of_device_is_compatible(parent, "pciclass,070002"))
pci = parent;
else {
of_node_put(parent);
continue;
}
index = add_legacy_pci_port(np, pci);
if (index >= 0 && np == stdout)
legacy_serial_console = index;
of_node_put(parent);
}
#endif
DBG("legacy_serial_console = %d\n", legacy_serial_console);
if (legacy_serial_console >= 0)
setup_legacy_serial_console(legacy_serial_console);
DBG(" <- find_legacy_serial_port()\n");
}
