int main(int argc, char *argv[])
{
void *fdt;
int n1, n2, n3, n4, n5;
uint32_t h1, h2, h4, h5;
test_init(argc, argv);
fdt = load_blob_arg(argc, argv);
n1 = fdt_path_offset(fdt, "/node1");
if (n1 < 0)
FAIL("fdt_path_offset(/node1): %s", fdt_strerror(n1));
n2 = fdt_path_offset(fdt, "/node2");
if (n2 < 0)
FAIL("fdt_path_offset(/node2): %s", fdt_strerror(n2));
n3 = fdt_path_offset(fdt, "/node3");
if (n3 < 0)
FAIL("fdt_path_offset(/node3): %s", fdt_strerror(n3));
n4 = fdt_path_offset(fdt, "/node4");
if (n4 < 0)
FAIL("fdt_path_offset(/node4): %s", fdt_strerror(n4));
n5 = fdt_path_offset(fdt, "/node5");
if (n5 < 0)
FAIL("fdt_path_offset(/node5): %s", fdt_strerror(n5));
h1 = fdt_get_phandle(fdt, n1);
h2 = fdt_get_phandle(fdt, n2);
h4 = fdt_get_phandle(fdt, n4);
h5 = fdt_get_phandle(fdt, n5);
if (h1 != 0x2000)
FAIL("/node1 has wrong phandle, 0x%x instead of 0x%x",
h1, 0x2000);
if (h2 != 0x1)
FAIL("/node2 has wrong phandle, 0x%x instead of 0x%x",
h2, 0x1);
if ((h4 == 0x2000) || (h4 == 0x1) || (h4 == 0))
FAIL("/node4 has bad phandle, 0x%x", h4);
if ((h5 == 0) || (h5 == -1))
FAIL("/node5 has bad phandle, 0x%x", h5);
if ((h5 == h4) || (h5 == h2) || (h5 == h1))
FAIL("/node5 has duplicate phandle, 0x%x", h5);
check_ref(fdt, n1, h2);
check_ref(fdt, n2, h1);
check_ref(fdt, n3, h4);
PASS();
}
void ft_fixup_num_cores(void *blob) {
int off, num_cores, del_cores;
del_cores = 0;
num_cores = cpu_numcores();
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
u32 phys_cpu_id = thread_to_core(*reg);
if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) {
int ph = fdt_get_phandle(blob, off);
/* Delete the cpu node once there are no cpu handles */
if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
fdt_del_node(blob, off);
del_cores++;
}
/* either we deleted some cpu handles or the cpu node
* so we reset the offset back to the start since we
* can't trust the offsets anymore
*/
off = -1;
}
off = fdt_node_offset_by_prop_value(blob, off,
"device_type", "cpu", 4);
}
debug ("%x core system found\n", num_cores);
debug ("deleted %d extra core entry entries from device tree\n",
del_cores);
}
int fdt_generate_phandle(const void *fdt, uint32_t *phandle)
{
uint32_t max = 0;
int offset = -1;
while (true) {
uint32_t value;
offset = fdt_next_node(fdt, offset, NULL);
if (offset < 0) {
if (offset == -FDT_ERR_NOTFOUND)
break;
return offset;
}
value = fdt_get_phandle(fdt, offset);
if (value > max)
max = value;
}
if (max == FDT_MAX_PHANDLE)
return -FDT_ERR_NOPHANDLES;
if (phandle)
*phandle = max + 1;
return 0;
}
uint32_t fdt_get_max_phandle(const void *fdt)
{
uint32_t max_phandle = 0;
int offset;
for (offset = fdt_next_node(fdt, -1, NULL);;
offset = fdt_next_node(fdt, offset, NULL)) {
uint32_t phandle;
if (offset == -FDT_ERR_NOTFOUND)
return max_phandle;
if (offset < 0)
return (uint32_t)-1;
phandle = fdt_get_phandle(fdt, offset);
if (phandle == (uint32_t)-1)
continue;
if (phandle > max_phandle)
max_phandle = phandle;
}
return 0;
}
static void powernv_populate_ipmi_bt(ISADevice *d, void *fdt, int lpc_off)
{
const char compatible[] = "bt\0ipmi-bt";
uint32_t io_base;
uint32_t io_regs[] = {
cpu_to_be32(1),
0, /* 'io_base' retrieved from the 'ioport' property of 'isa-ipmi-bt' */
cpu_to_be32(3)
};
uint32_t irq;
char *name;
int node;
io_base = object_property_get_int(OBJECT(d), "ioport", &error_fatal);
io_regs[1] = cpu_to_be32(io_base);
irq = object_property_get_int(OBJECT(d), "irq", &error_fatal);
name = g_strdup_printf("%s@i%x", qdev_fw_name(DEVICE(d)), io_base);
node = fdt_add_subnode(fdt, lpc_off, name);
_FDT(node);
g_free(name);
_FDT((fdt_setprop(fdt, node, "reg", io_regs, sizeof(io_regs))));
_FDT((fdt_setprop(fdt, node, "compatible", compatible,
sizeof(compatible))));
/* Mark it as reserved to avoid Linux trying to claim it */
_FDT((fdt_setprop_string(fdt, node, "status", "reserved")));
_FDT((fdt_setprop_cell(fdt, node, "interrupts", irq)));
_FDT((fdt_setprop_cell(fdt, node, "interrupt-parent",
fdt_get_phandle(fdt, lpc_off))));
}
static void powernv_populate_serial(ISADevice *d, void *fdt, int lpc_off)
{
const char compatible[] = "ns16550\0pnpPNP,501";
uint32_t io_base = d->ioport_id;
uint32_t io_regs[] = {
cpu_to_be32(1),
cpu_to_be32(io_base),
cpu_to_be32(8)
};
char *name;
int node;
name = g_strdup_printf("%s@i%x", qdev_fw_name(DEVICE(d)), io_base);
node = fdt_add_subnode(fdt, lpc_off, name);
_FDT(node);
g_free(name);
_FDT((fdt_setprop(fdt, node, "reg", io_regs, sizeof(io_regs))));
_FDT((fdt_setprop(fdt, node, "compatible", compatible,
sizeof(compatible))));
_FDT((fdt_setprop_cell(fdt, node, "clock-frequency", 1843200)));
_FDT((fdt_setprop_cell(fdt, node, "current-speed", 115200)));
_FDT((fdt_setprop_cell(fdt, node, "interrupts", d->isairq[0])));
_FDT((fdt_setprop_cell(fdt, node, "interrupt-parent",
fdt_get_phandle(fdt, lpc_off))));
/* This is needed by Linux */
_FDT((fdt_setprop_string(fdt, node, "device_type", "serial")));
}
static void ft_fixup_port(void *blob, struct fm_eth_info *info, char *prop)
{
int off, ph;
phys_addr_t paddr = CONFIG_SYS_CCSRBAR_PHYS + info->compat_offset;
u64 dtsec1_addr = (u64)CONFIG_SYS_CCSRBAR_PHYS +
CONFIG_SYS_FSL_FM1_DTSEC1_OFFSET;
off = fdt_node_offset_by_compat_reg(blob, prop, paddr);
if (info->enabled) {
fdt_fixup_phy_connection(blob, off, info->enet_if);
board_ft_fman_fixup_port(blob, prop, paddr, info->port, off);
return ;
}
/* board code might have caused offset to change */
off = fdt_node_offset_by_compat_reg(blob, prop, paddr);
/* Don't disable FM1-DTSEC1 MAC as its used for MDIO */
if (paddr != dtsec1_addr) {
/* disable the mac node */
fdt_setprop_string(blob, off, "status", "disabled");
}
/* disable the node point to the mac */
ph = fdt_get_phandle(blob, off);
do_fixup_by_prop(blob, "fsl,fman-mac", &ph, sizeof(ph),
"status", "disabled", strlen("disabled") + 1, 1);
}
/*
* Get max phandle
*/
static uint32_t
fdt_max_phandle(void *fdtp)
{
int o, depth;
uint32_t max_phandle, phandle;
depth = 1;
o = fdt_path_offset(fdtp, "/");
max_phandle = fdt_get_phandle(fdtp, o);
for (depth = 0; (o >= 0) && (depth >= 0); o = fdt_next_node(fdtp, o, &depth)) {
phandle = fdt_get_phandle(fdtp, o);
if (max_phandle < phandle)
max_phandle = phandle;
}
return max_phandle;
}
int dev_read_phandle(struct udevice *dev)
{
ofnode node = dev_ofnode(dev);
if (ofnode_is_np(node))
return ofnode_to_np(node)->phandle;
else
return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
}
static void ft_fixup_port(void *blob, struct fm_eth_info *info, char *prop)
{
int off;
uint32_t ph;
phys_addr_t paddr = CONFIG_SYS_CCSRBAR_PHYS + info->compat_offset;
u64 dtsec1_addr = (u64)CONFIG_SYS_CCSRBAR_PHYS +
CONFIG_SYS_FSL_FM1_DTSEC1_OFFSET;
off = fdt_node_offset_by_compat_reg(blob, prop, paddr);
if (info->enabled) {
fdt_fixup_phy_connection(blob, off, info->enet_if);
board_ft_fman_fixup_port(blob, prop, paddr, info->port, off);
return ;
}
#ifdef CONFIG_SYS_FMAN_V3
/*
* Physically FM1_DTSEC9 and FM1_10GEC1 use the same dual-role MAC, when
* FM1_10GEC1 is enabled and FM1_DTSEC9 is disabled, ensure that the
* dual-role MAC is not disabled, ditto for other dual-role MACs.
*/
if (((info->port == FM1_DTSEC9) && (PORT_IS_ENABLED(FM1_10GEC1))) ||
((info->port == FM1_DTSEC10) && (PORT_IS_ENABLED(FM1_10GEC2))) ||
((info->port == FM1_DTSEC1) && (PORT_IS_ENABLED(FM1_10GEC1))) ||
((info->port == FM1_DTSEC1) && (PORT_IS_ENABLED(FM1_10GEC3))) ||
((info->port == FM1_DTSEC2) && (PORT_IS_ENABLED(FM1_10GEC4))) ||
((info->port == FM1_10GEC1) && (PORT_IS_ENABLED(FM1_DTSEC1))) ||
((info->port == FM1_10GEC1) && (PORT_IS_ENABLED(FM1_DTSEC9))) ||
((info->port == FM1_10GEC2) && (PORT_IS_ENABLED(FM1_DTSEC10))) ||
((info->port == FM1_10GEC3) && (PORT_IS_ENABLED(FM1_DTSEC1))) ||
((info->port == FM1_10GEC4) && (PORT_IS_ENABLED(FM1_DTSEC2)))
#if (CONFIG_SYS_NUM_FMAN == 2)
||
((info->port == FM2_DTSEC9) && (PORT_IS_ENABLED(FM2_10GEC1))) ||
((info->port == FM2_DTSEC10) && (PORT_IS_ENABLED(FM2_10GEC2))) ||
((info->port == FM2_10GEC1) && (PORT_IS_ENABLED(FM2_DTSEC9))) ||
((info->port == FM2_10GEC2) && (PORT_IS_ENABLED(FM2_DTSEC10)))
#endif
)
return;
#endif
/* board code might have caused offset to change */
off = fdt_node_offset_by_compat_reg(blob, prop, paddr);
/* Don't disable FM1-DTSEC1 MAC as its used for MDIO */
if (paddr != dtsec1_addr)
fdt_status_disabled(blob, off); /* disable the MAC node */
/* disable the fsl,dpa-ethernet node that points to the MAC */
ph = fdt_get_phandle(blob, off);
do_fixup_by_prop(blob, "fsl,fman-mac", &ph, sizeof(ph),
"status", "disabled", strlen("disabled") + 1, 1);
}
uint32_t qemu_fdt_get_phandle(void *fdt, const char *path)
{
uint32_t r;
r = fdt_get_phandle(fdt, findnode_nofail(fdt, path));
if (r == 0) {
error_report("%s: Couldn't get phandle for %s: %s", __func__,
path, fdt_strerror(r));
exit(1);
}
return r;
}
uint32_t qemu_devtree_get_phandle(void *fdt, const char *path)
{
uint32_t r;
r = fdt_get_phandle(fdt, findnode_nofail(fdt, path));
if (r == 0) {
fprintf(stderr, "%s: Couldn't get phandle for %s: %s\n", __func__,
path, fdt_strerror(r));
exit(1);
}
return r;
}
static int ft_fixup_clocks(void *fdt, const char **names, u32 *rates, int num)
{
int offs, node_offs, ret, i;
uint32_t phandle;
offs = fdt_path_offset(fdt, "/ocp/l4@4a000000/cm_core_aon@5000/clocks");
if (offs < 0) {
debug("Could not find cm_core_aon clocks node path offset : %s\n",
fdt_strerror(offs));
return offs;
}
for (i = 0; i < num; i++) {
node_offs = fdt_subnode_offset(fdt, offs, names[i]);
if (node_offs < 0) {
debug("Could not find clock sub-node %s: %s\n",
names[i], fdt_strerror(node_offs));
return offs;
}
phandle = fdt_get_phandle(fdt, node_offs);
if (!phandle) {
debug("Could not find phandle for clock %s\n",
names[i]);
return -1;
}
ret = fdt_setprop_u32(fdt, node_offs, "assigned-clocks",
phandle);
if (ret < 0) {
debug("Could not add assigned-clocks property to clock node %s: %s\n",
names[i], fdt_strerror(ret));
return ret;
}
ret = fdt_setprop_u32(fdt, node_offs, "assigned-clock-rates",
rates[i]);
if (ret < 0) {
debug("Could not add assigned-clock-rates property to clock node %s: %s\n",
names[i], fdt_strerror(ret));
return ret;
}
}
return 0;
}
static uint32_t find_int_controller(void *fdt)
{
/* Find the FDT node corresponding to the interrupt controller
* for virtio-mmio devices. We do this by scanning the fdt for
* a node with the right compatibility, since we know there is
* only one GIC on a vexpress board.
* We return the phandle of the node, or 0 if none was found.
*/
const char *compat = "arm,cortex-a9-gic";
int offset;
offset = fdt_node_offset_by_compatible(fdt, -1, compat);
if (offset >= 0) {
return fdt_get_phandle(fdt, offset);
}
return 0;
}
STATIC
INT32
fdt_alloc_phandle (
IN VOID *Fdt
)
{
INT32 Offset;
INT32 Phandle;
Phandle = 0;
for (Offset = fdt_next_node (Fdt, -1, NULL); Offset >= 0;
Offset = fdt_next_node (Fdt, Offset, NULL)) {
Phandle = MAX (Phandle, fdt_get_phandle (Fdt, Offset));
}
return Phandle + 1;
}
/*
* This function updates the mmu-masters property on the SMMU
* node as per the SMMU binding-- phandle and list of stream IDs
* for each MMU master.
*/
void append_mmu_masters(void *blob, const char *smmu_path,
const char *master_name, u32 *stream_ids, int count)
{
u32 phandle;
int smmu_nodeoffset;
int master_nodeoffset;
int i;
/* get phandle of mmu master device */
master_nodeoffset = fdt_path_offset(blob, master_name);
if (master_nodeoffset < 0) {
printf("\n%s: ERROR: master not found\n", __func__);
return;
}
phandle = fdt_get_phandle(blob, master_nodeoffset);
if (!phandle) { /* if master has no phandle, create one */
phandle = fdt_create_phandle(blob, master_nodeoffset);
if (!phandle) {
printf("\n%s: ERROR: unable to create phandle\n",
__func__);
return;
}
}
/* append it to mmu-masters */
smmu_nodeoffset = fdt_path_offset(blob, smmu_path);
if (fdt_appendprop_u32(blob, smmu_nodeoffset, "mmu-masters",
phandle) < 0) {
printf("\n%s: ERROR: unable to update SMMU node\n", __func__);
return;
}
/* for each stream ID, append to mmu-masters */
for (i = 0; i < count; i++) {
fdt_appendprop_u32(blob, smmu_nodeoffset, "mmu-masters",
stream_ids[i]);
}
/* fix up #stream-id-cells with stream ID count */
if (fdt_setprop_u32(blob, master_nodeoffset, "#stream-id-cells",
count) < 0)
printf("\n%s: ERROR: unable to update #stream-id-cells\n",
__func__);
}
static QEMUDevice *qdev_create(QEMUDeviceClass *dc, const void *dt,
int node_offset)
{
QEMUDevice *dev = qemu_mallocz(sizeof(*dc));
dev->dc = dc;
dev->properties = qdev_copy_properties(dc->properties);
if (dc->num_irqs) {
dev->irqp = qemu_mallocz(dc->num_irqs * sizeof(qemu_irq *));
dev->irq = qemu_mallocz(dc->num_irqs * sizeof(qemu_irq));
}
dev->node_offset = node_offset;
dev->dt = dt;
dev->phandle = fdt_get_phandle(dt, node_offset);
dev->next = first_device;
first_device = dev;
return dev;
}
/*
* Handle __fixups__ node in overlay DTB
*/
static int
fdt_overlay_do_fixups(void *main_fdtp, void *overlay_fdtp)
{
int main_symbols_o, symbol_o, overlay_fixups_o;
int fixup_prop_o;
int len;
const char *fixups, *name;
const char *symbol_path;
uint32_t phandle;
main_symbols_o = fdt_path_offset(main_fdtp, "/__symbols__");
overlay_fixups_o = fdt_path_offset(overlay_fdtp, "/__fixups__");
if (main_symbols_o < 0)
return (-1);
if (overlay_fixups_o < 0)
return (-1);
for (fixup_prop_o = fdt_first_property_offset(overlay_fdtp, overlay_fixups_o);
fixup_prop_o >= 0;
fixup_prop_o = fdt_next_property_offset(overlay_fdtp, fixup_prop_o)) {
fixups = fdt_getprop_by_offset(overlay_fdtp, fixup_prop_o, &name, &len);
symbol_path = fdt_getprop(main_fdtp, main_symbols_o, name, NULL);
if (symbol_path == NULL) {
printf("couldn't find \"%s\" symbol in main dtb\n", name);
return (-1);
}
symbol_o = fdt_path_offset(main_fdtp, symbol_path);
if (symbol_o < 0) {
printf("couldn't find \"%s\" path in main dtb\n", symbol_path);
return (-1);
}
phandle = fdt_get_phandle(main_fdtp, symbol_o);
if (fdt_do_one_fixup(overlay_fdtp, fixups, len, phandle) < 0)
return (-1);
}
return (0);
}
int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
{
int offset;
if ((phandle == 0) || (phandle == -1))
return -FDT_ERR_BADPHANDLE;
FDT_CHECK_HEADER(fdt);
/* FIXME: The algorithm here is pretty horrible: we
* potentially scan each property of a node in
* fdt_get_phandle(), then if that didn't find what
* we want, we scan over them again making our way to the next
* node. Still it's the easiest to implement approach;
* performance can come later. */
for (offset = fdt_next_node(fdt, -1, NULL);
offset >= 0; offset = fdt_next_node(fdt, offset, NULL)) {
if (fdt_get_phandle(fdt, offset) == phandle)
return offset;
}
return offset; /* error from fdt_next_node() */
}
static __init int remove_gic(void *fdt)
{
const unsigned int cpu_ehci_int = 2;
const unsigned int cpu_uart_int = 4;
const unsigned int cpu_eth_int = 6;
int gic_off, cpu_off, uart_off, eth_off, ehci_off, err;
uint32_t cfg, cpu_phandle;
/* leave the GIC node intact if a GIC is present */
cfg = __raw_readl((uint32_t *)SEAD_CONFIG);
if (cfg & SEAD_CONFIG_GIC_PRESENT)
return 0;
gic_off = fdt_node_offset_by_compatible(fdt, -1, "mti,gic");
if (gic_off < 0) {
pr_err("unable to find DT GIC node: %d\n", gic_off);
return gic_off;
}
err = fdt_nop_node(fdt, gic_off);
if (err) {
pr_err("unable to nop GIC node\n");
return err;
}
cpu_off = fdt_node_offset_by_compatible(fdt, -1,
"mti,cpu-interrupt-controller");
if (cpu_off < 0) {
pr_err("unable to find CPU intc node: %d\n", cpu_off);
return cpu_off;
}
cpu_phandle = fdt_get_phandle(fdt, cpu_off);
if (!cpu_phandle) {
pr_err("unable to get CPU intc phandle\n");
return -EINVAL;
}
uart_off = fdt_node_offset_by_compatible(fdt, -1, "ns16550a");
while (uart_off >= 0) {
err = fdt_setprop_u32(fdt, uart_off, "interrupt-parent",
cpu_phandle);
if (err) {
pr_warn("unable to set UART interrupt-parent: %d\n",
err);
return err;
}
err = fdt_setprop_u32(fdt, uart_off, "interrupts",
cpu_uart_int);
if (err) {
pr_err("unable to set UART interrupts property: %d\n",
err);
return err;
}
uart_off = fdt_node_offset_by_compatible(fdt, uart_off,
"ns16550a");
}
if (uart_off != -FDT_ERR_NOTFOUND) {
pr_err("error searching for UART DT node: %d\n", uart_off);
return uart_off;
}
eth_off = fdt_node_offset_by_compatible(fdt, -1, "smsc,lan9115");
if (eth_off < 0) {
pr_err("unable to find ethernet DT node: %d\n", eth_off);
return eth_off;
}
err = fdt_setprop_u32(fdt, eth_off, "interrupt-parent", cpu_phandle);
if (err) {
pr_err("unable to set ethernet interrupt-parent: %d\n", err);
return err;
}
err = fdt_setprop_u32(fdt, eth_off, "interrupts", cpu_eth_int);
if (err) {
pr_err("unable to set ethernet interrupts property: %d\n", err);
return err;
}
ehci_off = fdt_node_offset_by_compatible(fdt, -1, "generic-ehci");
if (ehci_off < 0) {
pr_err("unable to find EHCI DT node: %d\n", ehci_off);
return ehci_off;
}
err = fdt_setprop_u32(fdt, ehci_off, "interrupt-parent", cpu_phandle);
if (err) {
pr_err("unable to set EHCI interrupt-parent: %d\n", err);
return err;
}
err = fdt_setprop_u32(fdt, ehci_off, "interrupts", cpu_ehci_int);
if (err) {
pr_err("unable to set EHCI interrupts property: %d\n", err);
return err;
}
return 0;
}