X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=common%2Ffdt_support.c;h=6a5f761cadd13a974c936b8f6890615c6c7dbf82;hp=784a570a818bd94fdb8dd086a4020f5652c91c00;hb=0db69c20c2e42945cb1e91729fa46111a86b4a9b;hpb=7f14fb20f895016fb38d30ce71aeb4d441b5bcb8 diff --git a/common/fdt_support.c b/common/fdt_support.c index 784a570a81..6a5f761cad 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -16,22 +17,6 @@ #include #include -/* - * Get cells len in bytes - * if #NNNN-cells property is 2 then len is 8 - * otherwise len is 4 - */ -static int get_cells_len(const void *fdt, const char *nr_cells_name) -{ - const fdt32_t *cell; - - cell = fdt_getprop(fdt, 0, nr_cells_name, NULL); - if (cell && fdt32_to_cpu(*cell) == 2) - return 8; - - return 4; -} - /** * fdt_getprop_u32_default_node - Return a node's property or a default * @@ -113,7 +98,8 @@ int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, } /** - * fdt_find_or_add_subnode - find or possibly add a subnode of a given node + * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node + * * @fdt: pointer to the device tree blob * @parentoffset: structure block offset of a node * @name: name of the subnode to locate @@ -121,8 +107,7 @@ int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, * fdt_subnode_offset() finds a subnode of the node with a given name. * If the subnode does not exist, it will be created. */ -static int fdt_find_or_add_subnode(void *fdt, int parentoffset, - const char *name) +int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name) { int offset; @@ -209,6 +194,31 @@ static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name, return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val); } +int fdt_root(void *fdt) +{ + char *serial; + int err; + + err = fdt_check_header(fdt); + if (err < 0) { + printf("fdt_root: %s\n", fdt_strerror(err)); + return err; + } + + serial = getenv("serial#"); + if (serial) { + err = fdt_setprop(fdt, 0, "serial-number", serial, + strlen(serial) + 1); + + if (err < 0) { + printf("WARNING: could not set serial-number %s.\n", + fdt_strerror(err)); + return err; + } + } + + return 0; +} int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end) { @@ -246,7 +256,7 @@ int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end) return err; } - is_u64 = (get_cells_len(fdt, "#address-cells") == 8); + is_u64 = (fdt_address_cells(fdt, 0) == 2); err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start", (uint64_t)initrd_start, is_u64); @@ -382,26 +392,26 @@ void do_fixup_by_compat_u32(void *fdt, const char *compat, /* * fdt_pack_reg - pack address and size array into the "reg"-suitable stream */ -static int fdt_pack_reg(const void *fdt, void *buf, uint64_t *address, - uint64_t *size, int n) +static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size, + int n) { int i; - int address_len = get_cells_len(fdt, "#address-cells"); - int size_len = get_cells_len(fdt, "#size-cells"); + int address_cells = fdt_address_cells(fdt, 0); + int size_cells = fdt_size_cells(fdt, 0); char *p = buf; for (i = 0; i < n; i++) { - if (address_len == 8) + if (address_cells == 2) *(fdt64_t *)p = cpu_to_fdt64(address[i]); else *(fdt32_t *)p = cpu_to_fdt32(address[i]); - p += address_len; + p += 4 * address_cells; - if (size_len == 8) + if (size_cells == 2) *(fdt64_t *)p = cpu_to_fdt64(size[i]); else *(fdt32_t *)p = cpu_to_fdt32(size[i]); - p += size_len; + p += 4 * size_cells; } return p - (char *)buf; @@ -444,6 +454,9 @@ int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) return err; } + if (!banks) + return 0; + len = fdt_pack_reg(blob, tmp, start, size, banks); err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); @@ -547,7 +560,8 @@ int fdt_shrink_to_minimum(void *blob) ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize); if (ret < 0) return ret; - + if (getenv("fdtsize")) + setenv_hex("fdtsize", actualsize); return actualsize; } @@ -717,7 +731,7 @@ struct reg_cell { unsigned int r1; }; -int fdt_del_subnodes(const void *blob, int parent_offset) +static int fdt_del_subnodes(const void *blob, int parent_offset) { int off, ndepth; int ret; @@ -725,18 +739,22 @@ int fdt_del_subnodes(const void *blob, int parent_offset) for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); (off >= 0) && (ndepth > 0); off = fdt_next_node(blob, off, &ndepth)) { - if (ndepth == 1) { - debug("delete %s: offset: %x\n", - fdt_get_name(blob, off, 0), off); - ret = fdt_del_node((void *)blob, off); - if (ret < 0) { - printf("Can't delete node: %s\n", - fdt_strerror(ret)); - return ret; - } else { - ndepth = 0; - off = parent_offset; - } + if (ndepth < 0) + break; + else if (ndepth != 1) + continue; + else if (fdt_getprop(blob, off, "compatible", NULL)) + continue; + debug("delete %s: offset: %x\n", + fdt_get_name(blob, off, 0), off); + ret = fdt_del_node((void *)blob, off); + if (ret < 0) { + printf("Can't delete node: %s\n", + fdt_strerror(ret)); + return ret; + } else { + ndepth = 0; + off = parent_offset; } } return 0; @@ -746,11 +764,16 @@ int fdt_del_partitions(void *blob, int parent_offset) { const void *prop; int ndepth = 0; - int off; + int off = parent_offset; int ret; - off = fdt_next_node(blob, parent_offset, &ndepth); - if (off > 0 && ndepth == 1) { + while ((off = fdt_next_node(blob, off, &ndepth)) > 0) { + if (ndepth < 0) + break; + else if (ndepth != 1) + continue; + else if (fdt_getprop(blob, off, "compatible", NULL)) + continue; prop = fdt_getprop(blob, off, "label", NULL); if (prop == NULL) { /* @@ -776,7 +799,7 @@ int fdt_node_set_part_info(void *blob, int parent_offset, struct list_head *pentry; struct part_info *part; struct reg_cell cell; - int off, ndepth = 0; + int off = parent_offset, ndepth = 0; int part_num, ret; char buf[64]; @@ -788,10 +811,16 @@ int fdt_node_set_part_info(void *blob, int parent_offset, * Check if it is nand {}; subnode, adjust * the offset in this case */ - off = fdt_next_node(blob, parent_offset, &ndepth); - if (off > 0 && ndepth == 1) + while ((off = fdt_next_node(blob, off, &ndepth)) > 0) { + if (ndepth < 0) + break; + else if (ndepth != 1) + continue; + else if (fdt_getprop(blob, off, "compatible", NULL)) + continue; parent_offset = off; - + break; + } part_num = 0; list_for_each_prev(pentry, &dev->parts) { int newoff; @@ -930,17 +959,6 @@ void fdt_del_node_and_alias(void *blob, const char *alias) fdt_delprop(blob, off, alias); } -/* Helper to read a big number; size is in cells (not bytes) */ -static inline u64 of_read_number(const fdt32_t *cell, int size) -{ - u64 r = 0; - while (size--) - r = (r << 32) | fdt32_to_cpu(*(cell++)); - return r; -} - -#define PRu64 "%llx" - /* Max address size we deal with */ #define OF_MAX_ADDR_CELLS 4 #define OF_BAD_ADDR ((u64)-1) @@ -972,18 +990,13 @@ struct of_bus { }; /* Default translator (generic bus) */ -static void of_bus_default_count_cells(void *blob, int parentoffset, +void of_bus_default_count_cells(void *blob, int parentoffset, int *addrc, int *sizec) { const fdt32_t *prop; - if (addrc) { - prop = fdt_getprop(blob, parentoffset, "#address-cells", NULL); - if (prop) - *addrc = be32_to_cpup(prop); - else - *addrc = 2; - } + if (addrc) + *addrc = fdt_address_cells(blob, parentoffset); if (sizec) { prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); @@ -1003,8 +1016,8 @@ static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, 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); + debug("OF: default map, cp=%" PRIu64 ", s=%" PRIu64 + ", da=%" PRIu64 "\n", cp, s, da); if (da < cp || da >= (cp + s)) return OF_BAD_ADDR; @@ -1082,7 +1095,7 @@ static int of_translate_one(void * blob, int parent, struct of_bus *bus, finish: of_dump_addr("OF: parent translation for:", addr, pna); - debug("OF: with offset: "PRu64"\n", offset); + debug("OF: with offset: %" PRIu64 "\n", offset); /* Translate it into parent bus space */ return pbus->translate(addr, offset, pna); @@ -1116,7 +1129,7 @@ static u64 __of_translate_address(void *blob, int node_offset, const fdt32_t *in goto bail; bus = &of_busses[0]; - /* Cound address cells & copy address locally */ + /* Count address cells & copy address locally */ bus->count_cells(blob, parent, &na, &ns); if (!OF_CHECK_COUNTS(na, ns)) { printf("%s: Bad cell count for %s\n", __FUNCTION__, @@ -1208,7 +1221,8 @@ int fdt_node_offset_by_compat_reg(void *blob, const char *compat, */ int fdt_alloc_phandle(void *blob) { - int offset, phandle = 0; + int offset; + uint32_t phandle = 0; for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; offset = fdt_next_node(blob, offset, NULL)) { @@ -1410,9 +1424,9 @@ int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) dt_addr = fdt_translate_address(fdt, node, reg); if (addr != dt_addr) { - printf("Warning: U-Boot configured device %s at address %llx,\n" - " but the device tree has it address %llx.\n", - alias, addr, dt_addr); + printf("Warning: U-Boot configured device %s at address %" + PRIx64 ",\n but the device tree has it address %" + PRIx64 ".\n", alias, addr, dt_addr); return 0; } @@ -1428,11 +1442,7 @@ u64 fdt_get_base_address(void *fdt, int node) u32 naddr; const fdt32_t *prop; - prop = fdt_getprop(fdt, node, "#address-cells", &size); - if (prop && size == 4) - naddr = be32_to_cpup(prop); - else - naddr = 2; + naddr = fdt_address_cells(fdt, node); prop = fdt_getprop(fdt, node, "ranges", &size); @@ -1532,3 +1542,94 @@ int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, return 0; } + +/** + * fdt_setup_simplefb_node - Fill and enable a simplefb node + * + * @fdt: ptr to device tree + * @node: offset of the simplefb node + * @base_address: framebuffer base address + * @width: width in pixels + * @height: height in pixels + * @stride: bytes per line + * @format: pixel format string + * + * Convenience function to fill and enable a simplefb node. + */ +int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, + u32 height, u32 stride, const char *format) +{ + char name[32]; + fdt32_t cells[4]; + int i, addrc, sizec, ret; + + of_bus_default_count_cells(fdt, fdt_parent_offset(fdt, node), + &addrc, &sizec); + i = 0; + if (addrc == 2) + cells[i++] = cpu_to_fdt32(base_address >> 32); + cells[i++] = cpu_to_fdt32(base_address); + if (sizec == 2) + cells[i++] = 0; + cells[i++] = cpu_to_fdt32(height * stride); + + ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i); + if (ret < 0) + return ret; + + snprintf(name, sizeof(name), "framebuffer@%" PRIx64, base_address); + ret = fdt_set_name(fdt, node, name); + if (ret < 0) + return ret; + + ret = fdt_setprop_u32(fdt, node, "width", width); + if (ret < 0) + return ret; + + ret = fdt_setprop_u32(fdt, node, "height", height); + if (ret < 0) + return ret; + + ret = fdt_setprop_u32(fdt, node, "stride", stride); + if (ret < 0) + return ret; + + ret = fdt_setprop_string(fdt, node, "format", format); + if (ret < 0) + return ret; + + ret = fdt_setprop_string(fdt, node, "status", "okay"); + if (ret < 0) + return ret; + + return 0; +} + +/* + * Update native-mode in display-timings from display environment variable. + * The node to update are specified by path. + */ +int fdt_fixup_display(void *blob, const char *path, const char *display) +{ + int off, toff; + + if (!display || !path) + return -FDT_ERR_NOTFOUND; + + toff = fdt_path_offset(blob, path); + if (toff >= 0) + toff = fdt_subnode_offset(blob, toff, "display-timings"); + if (toff < 0) + return toff; + + for (off = fdt_first_subnode(blob, toff); + off >= 0; + off = fdt_next_subnode(blob, off)) { + uint32_t h = fdt_get_phandle(blob, off); + debug("%s:0x%x\n", fdt_get_name(blob, off, NULL), + fdt32_to_cpu(h)); + if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0) + return fdt_setprop_u32(blob, toff, "native-mode", h); + } + return toff; +}