diff options
Diffstat (limited to 'common/fdt_support.c')
| -rw-r--r-- | common/fdt_support.c | 83 |
1 files changed, 43 insertions, 40 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c index 718b635d99b..aef4fe23e05 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -498,11 +498,12 @@ 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); @@ -873,35 +874,6 @@ static inline u64 of_read_number(const __be32 *cell, int size) 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 */ @@ -927,7 +899,7 @@ static void of_dump_addr(const char *s, const u32 *addr, int na) { } struct of_bus { const char *name; const char *addresses; - void (*count_cells)(void *blob, int offset, + void (*count_cells)(void *blob, int parentoffset, int *addrc, int *sizec); u64 (*map)(u32 *addr, const u32 *range, int na, int ns, int pna); @@ -935,13 +907,26 @@ struct of_bus { }; /* Default translator (generic bus) */ -static void of_bus_default_count_cells(void *blob, int offset, +static void of_bus_default_count_cells(void *blob, int parentoffset, int *addrc, int *sizec) { - if (addrc) - *addrc = of_n_addr_cells(blob, offset); - if (sizec) - *sizec = of_n_size_cells(blob, offset); + const u32 *prop; + + if (addrc) { + prop = fdt_getprop(blob, parentoffset, "#address-cells", NULL); + if (prop) + *addrc = be32_to_cpup(prop); + else + *addrc = 2; + } + + if (sizec) { + prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); + if (prop) + *sizec = be32_to_cpup(prop); + else + *sizec = 1; + } } static u64 of_bus_default_map(u32 *addr, const u32 *range, @@ -1067,7 +1052,7 @@ u64 __of_translate_address(void *blob, int node_offset, const u32 *in_addr, bus = &of_busses[0]; /* Cound address cells & copy address locally */ - bus->count_cells(blob, node_offset, &na, &ns); + bus->count_cells(blob, parent, &na, &ns); if (!OF_CHECK_COUNTS(na, ns)) { printf("%s: Bad cell count for %s\n", __FUNCTION__, fdt_get_name(blob, node_offset, NULL)); @@ -1094,7 +1079,7 @@ u64 __of_translate_address(void *blob, int node_offset, const u32 *in_addr, /* Get new parent bus and counts */ pbus = &of_busses[0]; - pbus->count_cells(blob, node_offset, &pna, &pns); + pbus->count_cells(blob, parent, &pna, &pns); if (!OF_CHECK_COUNTS(pna, pns)) { printf("%s: Bad cell count for %s\n", __FUNCTION__, fdt_get_name(blob, node_offset, NULL)); @@ -1151,4 +1136,22 @@ int fdt_node_offset_by_compat_reg(void *blob, const char *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; +} |