* (C) Copyright 2007
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
*
+ * Copyright 2010 Freescale Semiconductor, Inc.
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
}
}
-#ifdef CONFIG_HAS_FSL_DR_USB
-void fdt_fixup_dr_usb(void *blob, bd_t *bd)
-{
- char *mode;
- char *type;
- const char *compat = "fsl-usb2-dr";
- const char *prop_mode = "dr_mode";
- const char *prop_type = "phy_type";
- int node_offset;
- int err;
-
- mode = getenv("usb_dr_mode");
- type = getenv("usb_phy_type");
- if (!mode && !type)
- return;
-
- node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
- if (node_offset < 0) {
- printf("WARNING: could not find compatible node %s: %s.\n",
- compat, fdt_strerror(node_offset));
- return;
- }
-
- if (mode) {
- err = fdt_setprop(blob, node_offset, prop_mode, mode,
- strlen(mode) + 1);
- if (err < 0)
- printf("WARNING: could not set %s for %s: %s.\n",
- prop_mode, compat, fdt_strerror(err));
- }
-
- if (type) {
- err = fdt_setprop(blob, node_offset, prop_type, type,
- strlen(type) + 1);
- if (err < 0)
- printf("WARNING: could not set %s for %s: %s.\n",
- prop_type, compat, fdt_strerror(err));
- }
-}
-#endif /* CONFIG_HAS_FSL_DR_USB */
-
-#if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx)
-/*
- * update crypto node properties to a specified revision of the SEC
- * called with sec_rev == 0 if not on an mpc8xxxE processor
- */
-void fdt_fixup_crypto_node(void *blob, int sec_rev)
-{
- const struct sec_rev_prop {
- u32 sec_rev;
- u32 num_channels;
- u32 channel_fifo_len;
- u32 exec_units_mask;
- u32 descriptor_types_mask;
- } sec_rev_prop_list [] = {
- { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
- { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
- { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
- { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
- { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
- { 0x0303, 4, 24, 0x97c, 0x03ab0abf }, /* SEC 3.3 */
- };
- char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
- sizeof("fsl,secX.Y")];
- int crypto_node, sec_idx, err;
- char *p;
- u32 val;
-
- /* locate crypto node based on lowest common compatible */
- crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
- if (crypto_node == -FDT_ERR_NOTFOUND)
- return;
-
- /* delete it if not on an E-processor */
- if (crypto_node > 0 && !sec_rev) {
- fdt_del_node(blob, crypto_node);
- return;
- }
-
- /* else we got called for possible uprev */
- for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
- if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
- break;
-
- if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
- puts("warning: unknown SEC revision number\n");
- return;
- }
-
- val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
- err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
- if (err < 0)
- printf("WARNING: could not set crypto property: %s\n",
- fdt_strerror(err));
-
- val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
- err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
- if (err < 0)
- printf("WARNING: could not set crypto property: %s\n",
- fdt_strerror(err));
-
- val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
- err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
- if (err < 0)
- printf("WARNING: could not set crypto property: %s\n",
- fdt_strerror(err));
-
- val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
- err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
- if (err < 0)
- printf("WARNING: could not set crypto property: %s\n",
- fdt_strerror(err));
-
- val = 0;
- while (sec_idx >= 0) {
- p = compat_strlist + val;
- val += sprintf(p, "fsl,sec%d.%d",
- (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
- sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
- sec_idx--;
- }
- err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
- if (err < 0)
- printf("WARNING: could not set crypto property: %s\n",
- fdt_strerror(err));
-}
-#endif /* defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) */
-
/* Resize the fdt to its actual size + a bit of padding */
int fdt_resize(void *blob)
{
/*
* Calculate the actual size of the fdt
- * plus the size needed for two fdt_add_mem_rsv, one
- * for the fdt itself and one for a possible initrd
+ * plus the size needed for 5 fdt_add_mem_rsv, one
+ * for the fdt itself and 4 for a possible initrd
+ * ((initrd-start + initrd-end) * 2 (name & value))
*/
actualsize = fdt_off_dt_strings(blob) +
- fdt_size_dt_strings(blob) + 2*sizeof(struct fdt_reserve_entry);
+ fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry);
/* Make it so the fdt ends on a page boundary */
actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000);
off = fdt_path_offset(blob, "/aliases");
fdt_delprop(blob, off, alias);
}
+
+/* Helper to read a big number; size is in cells (not bytes) */
+static inline u64 of_read_number(const __be32 *cell, int size)
+{
+ u64 r = 0;
+ while (size--)
+ r = (r << 32) | be32_to_cpu(*(cell++));
+ return r;
+}
+
+static int of_n_cells(const void *blob, int nodeoffset, const char *name)
+{
+ int np;
+ const int *ip;
+
+ do {
+ np = fdt_parent_offset(blob, nodeoffset);
+
+ if (np >= 0)
+ nodeoffset = np;
+ ip = (int *)fdt_getprop(blob, nodeoffset, name, NULL);
+ if (ip)
+ return be32_to_cpup(ip);
+ } while (np >= 0);
+
+ /* No #<NAME>-cells property for the root node */
+ return 1;
+}
+
+int of_n_addr_cells(const void *blob, int nodeoffset)
+{
+ return of_n_cells(blob, nodeoffset, "#address-cells");
+}
+
+int of_n_size_cells(const void *blob, int nodeoffset)
+{
+ return of_n_cells(blob, nodeoffset, "#size-cells");
+}
+
+#define PRu64 "%llx"
+
+/* Max address size we deal with */
+#define OF_MAX_ADDR_CELLS 4
+#define OF_BAD_ADDR ((u64)-1)
+#define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \
+ (ns) > 0)
+
+/* Debug utility */
+#ifdef DEBUG
+static void of_dump_addr(const char *s, const u32 *addr, int na)
+{
+ printf("%s", s);
+ while(na--)
+ printf(" %08x", *(addr++));
+ printf("\n");
+}
+#else
+static void of_dump_addr(const char *s, const u32 *addr, int na) { }
+#endif
+
+/* Callbacks for bus specific translators */
+struct of_bus {
+ const char *name;
+ const char *addresses;
+ void (*count_cells)(void *blob, int offset,
+ int *addrc, int *sizec);
+ u64 (*map)(u32 *addr, const u32 *range,
+ int na, int ns, int pna);
+ int (*translate)(u32 *addr, u64 offset, int na);
+};
+
+/* Default translator (generic bus) */
+static void of_bus_default_count_cells(void *blob, int offset,
+ int *addrc, int *sizec)
+{
+ if (addrc)
+ *addrc = of_n_addr_cells(blob, offset);
+ if (sizec)
+ *sizec = of_n_size_cells(blob, offset);
+}
+
+static u64 of_bus_default_map(u32 *addr, const u32 *range,
+ int na, int ns, int pna)
+{
+ u64 cp, s, da;
+
+ cp = of_read_number(range, na);
+ s = of_read_number(range + na + pna, ns);
+ da = of_read_number(addr, na);
+
+ debug("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n",
+ cp, s, da);
+
+ if (da < cp || da >= (cp + s))
+ return OF_BAD_ADDR;
+ return da - cp;
+}
+
+static int of_bus_default_translate(u32 *addr, u64 offset, int na)
+{
+ u64 a = of_read_number(addr, na);
+ memset(addr, 0, na * 4);
+ a += offset;
+ if (na > 1)
+ addr[na - 2] = a >> 32;
+ addr[na - 1] = a & 0xffffffffu;
+
+ return 0;
+}
+
+/* Array of bus specific translators */
+static struct of_bus of_busses[] = {
+ /* Default */
+ {
+ .name = "default",
+ .addresses = "reg",
+ .count_cells = of_bus_default_count_cells,
+ .map = of_bus_default_map,
+ .translate = of_bus_default_translate,
+ },
+};
+
+static int of_translate_one(void * blob, int parent, struct of_bus *bus,
+ struct of_bus *pbus, u32 *addr,
+ int na, int ns, int pna, const char *rprop)
+{
+ const u32 *ranges;
+ int rlen;
+ int rone;
+ u64 offset = OF_BAD_ADDR;
+
+ /* Normally, an absence of a "ranges" property means we are
+ * crossing a non-translatable boundary, and thus the addresses
+ * below the current not cannot be converted to CPU physical ones.
+ * Unfortunately, while this is very clear in the spec, it's not
+ * what Apple understood, and they do have things like /uni-n or
+ * /ht nodes with no "ranges" property and a lot of perfectly
+ * useable mapped devices below them. Thus we treat the absence of
+ * "ranges" as equivalent to an empty "ranges" property which means
+ * a 1:1 translation at that level. It's up to the caller not to try
+ * to translate addresses that aren't supposed to be translated in
+ * the first place. --BenH.
+ */
+ ranges = (u32 *)fdt_getprop(blob, parent, rprop, &rlen);
+ if (ranges == NULL || rlen == 0) {
+ offset = of_read_number(addr, na);
+ memset(addr, 0, pna * 4);
+ debug("OF: no ranges, 1:1 translation\n");
+ goto finish;
+ }
+
+ debug("OF: walking ranges...\n");
+
+ /* Now walk through the ranges */
+ rlen /= 4;
+ rone = na + pna + ns;
+ for (; rlen >= rone; rlen -= rone, ranges += rone) {
+ offset = bus->map(addr, ranges, na, ns, pna);
+ if (offset != OF_BAD_ADDR)
+ break;
+ }
+ if (offset == OF_BAD_ADDR) {
+ debug("OF: not found !\n");
+ return 1;
+ }
+ memcpy(addr, ranges + na, 4 * pna);
+
+ finish:
+ of_dump_addr("OF: parent translation for:", addr, pna);
+ debug("OF: with offset: "PRu64"\n", offset);
+
+ /* Translate it into parent bus space */
+ return pbus->translate(addr, offset, pna);
+}
+
+/*
+ * Translate an address from the device-tree into a CPU physical address,
+ * this walks up the tree and applies the various bus mappings on the
+ * way.
+ *
+ * Note: We consider that crossing any level with #size-cells == 0 to mean
+ * that translation is impossible (that is we are not dealing with a value
+ * that can be mapped to a cpu physical address). This is not really specified
+ * that way, but this is traditionally the way IBM at least do things
+ */
+u64 __of_translate_address(void *blob, int node_offset, const u32 *in_addr,
+ const char *rprop)
+{
+ int parent;
+ struct of_bus *bus, *pbus;
+ u32 addr[OF_MAX_ADDR_CELLS];
+ int na, ns, pna, pns;
+ u64 result = OF_BAD_ADDR;
+
+ debug("OF: ** translation for device %s **\n",
+ fdt_get_name(blob, node_offset, NULL));
+
+ /* Get parent & match bus type */
+ parent = fdt_parent_offset(blob, node_offset);
+ if (parent < 0)
+ goto bail;
+ bus = &of_busses[0];
+
+ /* Cound address cells & copy address locally */
+ bus->count_cells(blob, node_offset, &na, &ns);
+ if (!OF_CHECK_COUNTS(na, ns)) {
+ printf("%s: Bad cell count for %s\n", __FUNCTION__,
+ fdt_get_name(blob, node_offset, NULL));
+ goto bail;
+ }
+ memcpy(addr, in_addr, na * 4);
+
+ debug("OF: bus is %s (na=%d, ns=%d) on %s\n",
+ bus->name, na, ns, fdt_get_name(blob, parent, NULL));
+ of_dump_addr("OF: translating address:", addr, na);
+
+ /* Translate */
+ for (;;) {
+ /* Switch to parent bus */
+ node_offset = parent;
+ parent = fdt_parent_offset(blob, node_offset);
+
+ /* If root, we have finished */
+ if (parent < 0) {
+ debug("OF: reached root node\n");
+ result = of_read_number(addr, na);
+ break;
+ }
+
+ /* Get new parent bus and counts */
+ pbus = &of_busses[0];
+ pbus->count_cells(blob, node_offset, &pna, &pns);
+ if (!OF_CHECK_COUNTS(pna, pns)) {
+ printf("%s: Bad cell count for %s\n", __FUNCTION__,
+ fdt_get_name(blob, node_offset, NULL));
+ break;
+ }
+
+ debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n",
+ pbus->name, pna, pns, fdt_get_name(blob, parent, NULL));
+
+ /* Apply bus translation */
+ if (of_translate_one(blob, node_offset, bus, pbus,
+ addr, na, ns, pna, rprop))
+ break;
+
+ /* Complete the move up one level */
+ na = pna;
+ ns = pns;
+ bus = pbus;
+
+ of_dump_addr("OF: one level translation:", addr, na);
+ }
+ bail:
+
+ return result;
+}
+
+u64 fdt_translate_address(void *blob, int node_offset, const u32 *in_addr)
+{
+ return __of_translate_address(blob, node_offset, in_addr, "ranges");
+}
+
+/**
+ * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and
+ * who's reg property matches a physical cpu address
+ *
+ * @blob: ptr to device tree
+ * @compat: compatiable string to match
+ * @compat_off: property name
+ *
+ */
+int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
+ phys_addr_t compat_off)
+{
+ int len, off = fdt_node_offset_by_compatible(blob, -1, compat);
+ while (off != -FDT_ERR_NOTFOUND) {
+ u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", &len);
+ if (reg) {
+ if (compat_off == fdt_translate_address(blob, off, reg))
+ return off;
+ }
+ off = fdt_node_offset_by_compatible(blob, off, compat);
+ }
+
+ return -FDT_ERR_NOTFOUND;
+}
+
+/**
+ * fdt_alloc_phandle: Return next free phandle value
+ *
+ * @blob: ptr to device tree
+ */
+int fdt_alloc_phandle(void *blob)
+{
+ int offset, len, phandle = 0;
+ const u32 *val;
+
+ for (offset = fdt_next_node(blob, -1, NULL); offset >= 0;
+ offset = fdt_next_node(blob, offset, NULL)) {
+ val = fdt_getprop(blob, offset, "linux,phandle", &len);
+ if (val)
+ phandle = max(*val, phandle);
+ }
+
+ return phandle + 1;
+}
projects / karo-tx-uboot.git / blobdiff