/* * (C) Copyright 2007 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <linux/ctype.h> #include <linux/types.h> #include <asm/global_data.h> #include <fdt.h> #include <libfdt.h> #include <fdt_support.h> #include <exports.h> /* * Global data (for the gd->bd) */ DECLARE_GLOBAL_DATA_PTR; /** * fdt_getprop_u32_default - Find a node and return it's property or a default * * @fdt: ptr to device tree * @path: path of node * @prop: property name * @dflt: default value if the property isn't found * * Convenience function to find a node and return it's property or a * default value if it doesn't exist. */ u32 fdt_getprop_u32_default(void *fdt, const char *path, const char *prop, const u32 dflt) { const u32 *val; int off; off = fdt_path_offset(fdt, path); if (off < 0) return dflt; val = fdt_getprop(fdt, off, prop, NULL); if (val) return *val; else return dflt; } /** * fdt_find_and_setprop: Find a node and set it's property * * @fdt: ptr to device tree * @node: path of node * @prop: property name * @val: ptr to new value * @len: length of new property value * @create: flag to create the property if it doesn't exist * * Convenience function to directly set a property given the path to the node. */ int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, const void *val, int len, int create) { int nodeoff = fdt_path_offset(fdt, node); if (nodeoff < 0) return nodeoff; if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL)) return 0; /* create flag not set; so exit quietly */ return fdt_setprop(fdt, nodeoff, prop, val, len); } #ifdef CONFIG_OF_STDOUT_VIA_ALIAS static int fdt_fixup_stdout(void *fdt, int chosenoff) { int err = 0; #ifdef CONFIG_CONS_INDEX int node; char sername[9] = { 0 }; const char *path; sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); err = node = fdt_path_offset(fdt, "/aliases"); if (node >= 0) { int len; path = fdt_getprop(fdt, node, sername, &len); if (path) { char *p = malloc(len); err = -FDT_ERR_NOSPACE; if (p) { memcpy(p, path, len); err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", p, len); free(p); } } else { err = len; } } #endif if (err < 0) printf("WARNING: could not set linux,stdout-path %s.\n", fdt_strerror(err)); return err; } #endif int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force) { int nodeoffset; int err, j, total; u32 tmp; const char *path; uint64_t addr, size; /* Find the "chosen" node. */ nodeoffset = fdt_path_offset (fdt, "/chosen"); /* If there is no "chosen" node in the blob return */ if (nodeoffset < 0) { printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset)); return nodeoffset; } /* just return if initrd_start/end aren't valid */ if ((initrd_start == 0) || (initrd_end == 0)) return 0; total = fdt_num_mem_rsv(fdt); /* * Look for an existing entry and update it. If we don't find * the entry, we will j be the next available slot. */ for (j = 0; j < total; j++) { err = fdt_get_mem_rsv(fdt, j, &addr, &size); if (addr == initrd_start) { fdt_del_mem_rsv(fdt, j); break; } } err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1); if (err < 0) { printf("fdt_initrd: %s\n", fdt_strerror(err)); return err; } path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL); if ((path == NULL) || force) { tmp = __cpu_to_be32(initrd_start); err = fdt_setprop(fdt, nodeoffset, "linux,initrd-start", &tmp, sizeof(tmp)); if (err < 0) { printf("WARNING: " "could not set linux,initrd-start %s.\n", fdt_strerror(err)); return err; } tmp = __cpu_to_be32(initrd_end); err = fdt_setprop(fdt, nodeoffset, "linux,initrd-end", &tmp, sizeof(tmp)); if (err < 0) { printf("WARNING: could not set linux,initrd-end %s.\n", fdt_strerror(err)); return err; } } return 0; } int fdt_chosen(void *fdt, int force) { int nodeoffset; int err; char *str; /* used to set string properties */ const char *path; err = fdt_check_header(fdt); if (err < 0) { printf("fdt_chosen: %s\n", fdt_strerror(err)); return err; } /* * Find the "chosen" node. */ nodeoffset = fdt_path_offset (fdt, "/chosen"); /* * If there is no "chosen" node in the blob, create it. */ if (nodeoffset < 0) { /* * Create a new node "/chosen" (offset 0 is root level) */ nodeoffset = fdt_add_subnode(fdt, 0, "chosen"); if (nodeoffset < 0) { printf("WARNING: could not create /chosen %s.\n", fdt_strerror(nodeoffset)); return nodeoffset; } } /* * Create /chosen properites that don't exist in the fdt. * If the property exists, update it only if the "force" parameter * is true. */ str = getenv("bootargs"); if (str != NULL) { path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL); if ((path == NULL) || force) { err = fdt_setprop(fdt, nodeoffset, "bootargs", str, strlen(str)+1); if (err < 0) printf("WARNING: could not set bootargs %s.\n", fdt_strerror(err)); } } #ifdef CONFIG_OF_STDOUT_VIA_ALIAS path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); if ((path == NULL) || force) err = fdt_fixup_stdout(fdt, nodeoffset); #endif #ifdef OF_STDOUT_PATH path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); if ((path == NULL) || force) { err = fdt_setprop(fdt, nodeoffset, "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1); if (err < 0) printf("WARNING: could not set linux,stdout-path %s.\n", fdt_strerror(err)); } #endif return err; } void do_fixup_by_path(void *fdt, const char *path, const char *prop, const void *val, int len, int create) { #if defined(DEBUG) int i; debug("Updating property '%s/%s' = ", path, prop); for (i = 0; i < len; i++) debug(" %.2x", *(u8*)(val+i)); debug("\n"); #endif int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); if (rc) printf("Unable to update property %s:%s, err=%s\n", path, prop, fdt_strerror(rc)); } void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, u32 val, int create) { val = cpu_to_fdt32(val); do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create); } void do_fixup_by_prop(void *fdt, const char *pname, const void *pval, int plen, const char *prop, const void *val, int len, int create) { int off; #if defined(DEBUG) int i; debug("Updating property '%s' = ", prop); for (i = 0; i < len; i++) debug(" %.2x", *(u8*)(val+i)); debug("\n"); #endif off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); while (off != -FDT_ERR_NOTFOUND) { if (create || (fdt_get_property(fdt, off, prop, 0) != NULL)) fdt_setprop(fdt, off, prop, val, len); off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); } } void do_fixup_by_prop_u32(void *fdt, const char *pname, const void *pval, int plen, const char *prop, u32 val, int create) { val = cpu_to_fdt32(val); do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create); } void do_fixup_by_compat(void *fdt, const char *compat, const char *prop, const void *val, int len, int create) { int off = -1; #if defined(DEBUG) int i; debug("Updating property '%s' = ", prop); for (i = 0; i < len; i++) debug(" %.2x", *(u8*)(val+i)); debug("\n"); #endif off = fdt_node_offset_by_compatible(fdt, -1, compat); while (off != -FDT_ERR_NOTFOUND) { if (create || (fdt_get_property(fdt, off, prop, 0) != NULL)) fdt_setprop(fdt, off, prop, val, len); off = fdt_node_offset_by_compatible(fdt, off, compat); } } void do_fixup_by_compat_u32(void *fdt, const char *compat, const char *prop, u32 val, int create) { val = cpu_to_fdt32(val); do_fixup_by_compat(fdt, compat, prop, &val, 4, create); } int fdt_fixup_memory(void *blob, u64 start, u64 size) { int err, nodeoffset, len = 0; u8 tmp[16]; const u32 *addrcell, *sizecell; err = fdt_check_header(blob); if (err < 0) { printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); return err; } /* update, or add and update /memory node */ nodeoffset = fdt_path_offset(blob, "/memory"); if (nodeoffset < 0) { nodeoffset = fdt_add_subnode(blob, 0, "memory"); if (nodeoffset < 0) printf("WARNING: could not create /memory: %s.\n", fdt_strerror(nodeoffset)); return nodeoffset; } err = fdt_setprop(blob, nodeoffset, "device_type", "memory", sizeof("memory")); if (err < 0) { printf("WARNING: could not set %s %s.\n", "device_type", fdt_strerror(err)); return err; } addrcell = fdt_getprop(blob, 0, "#address-cells", NULL); /* use shifts and mask to ensure endianness */ if ((addrcell) && (*addrcell == 2)) { tmp[0] = (start >> 56) & 0xff; tmp[1] = (start >> 48) & 0xff; tmp[2] = (start >> 40) & 0xff; tmp[3] = (start >> 32) & 0xff; tmp[4] = (start >> 24) & 0xff; tmp[5] = (start >> 16) & 0xff; tmp[6] = (start >> 8) & 0xff; tmp[7] = (start ) & 0xff; len = 8; } else { tmp[0] = (start >> 24) & 0xff; tmp[1] = (start >> 16) & 0xff; tmp[2] = (start >> 8) & 0xff; tmp[3] = (start ) & 0xff; len = 4; } sizecell = fdt_getprop(blob, 0, "#size-cells", NULL); /* use shifts and mask to ensure endianness */ if ((sizecell) && (*sizecell == 2)) { tmp[0+len] = (size >> 56) & 0xff; tmp[1+len] = (size >> 48) & 0xff; tmp[2+len] = (size >> 40) & 0xff; tmp[3+len] = (size >> 32) & 0xff; tmp[4+len] = (size >> 24) & 0xff; tmp[5+len] = (size >> 16) & 0xff; tmp[6+len] = (size >> 8) & 0xff; tmp[7+len] = (size ) & 0xff; len += 8; } else { tmp[0+len] = (size >> 24) & 0xff; tmp[1+len] = (size >> 16) & 0xff; tmp[2+len] = (size >> 8) & 0xff; tmp[3+len] = (size ) & 0xff; len += 4; } err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); if (err < 0) { printf("WARNING: could not set %s %s.\n", "reg", fdt_strerror(err)); return err; } return 0; } void fdt_fixup_ethernet(void *fdt) { int node, i, j; char enet[16], *tmp, *end; char mac[16] = "ethaddr"; const char *path; unsigned char mac_addr[6]; node = fdt_path_offset(fdt, "/aliases"); if (node < 0) return; i = 0; while ((tmp = getenv(mac)) != NULL) { sprintf(enet, "ethernet%d", i); path = fdt_getprop(fdt, node, enet, NULL); if (!path) { debug("No alias for %s\n", enet); sprintf(mac, "eth%daddr", ++i); continue; } for (j = 0; j < 6; j++) { mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0; if (tmp) tmp = (*end) ? end+1 : end; } do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0); do_fixup_by_path(fdt, path, "local-mac-address", &mac_addr, 6, 1); sprintf(mac, "eth%daddr", ++i); } } #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) { int i; uint64_t addr, size; int total, ret; uint actualsize; if (!blob) return 0; total = fdt_num_mem_rsv(blob); for (i = 0; i < total; i++) { fdt_get_mem_rsv(blob, i, &addr, &size); if (addr == (uint64_t)(u32)blob) { fdt_del_mem_rsv(blob, i); break; } } /* * Calculate the actual size of the fdt * plus the size needed for fdt_add_mem_rsv */ actualsize = fdt_off_dt_strings(blob) + fdt_size_dt_strings(blob) + sizeof(struct fdt_reserve_entry); /* Make it so the fdt ends on a page boundary */ actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000); actualsize = actualsize - ((uint)blob & 0xfff); /* Change the fdt header to reflect the correct size */ fdt_set_totalsize(blob, actualsize); /* Add the new reservation */ ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize); if (ret < 0) return ret; return actualsize; } #ifdef CONFIG_PCI #define CONFIG_SYS_PCI_NR_INBOUND_WIN 3 #define FDT_PCI_PREFETCH (0x40000000) #define FDT_PCI_MEM32 (0x02000000) #define FDT_PCI_IO (0x01000000) #define FDT_PCI_MEM64 (0x03000000) int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { int addrcell, sizecell, len, r; u32 *dma_range; /* sized based on pci addr cells, size-cells, & address-cells */ u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); dma_range = &dma_ranges[0]; for (r = 0; r < hose->region_count; r++) { u64 bus_start, phys_start, size; /* skip if !PCI_REGION_SYS_MEMORY */ if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) continue; bus_start = (u64)hose->regions[r].bus_start; phys_start = (u64)hose->regions[r].phys_start; size = (u64)hose->regions[r].size; dma_range[0] = 0; if (size > 0x100000000ull) dma_range[0] |= FDT_PCI_MEM64; else dma_range[0] |= FDT_PCI_MEM32; if (hose->regions[r].flags & PCI_REGION_PREFETCH) dma_range[0] |= FDT_PCI_PREFETCH; #ifdef CONFIG_SYS_PCI_64BIT dma_range[1] = bus_start >> 32; #else dma_range[1] = 0; #endif dma_range[2] = bus_start & 0xffffffff; if (addrcell == 2) { dma_range[3] = phys_start >> 32; dma_range[4] = phys_start & 0xffffffff; } else { dma_range[3] = phys_start & 0xffffffff; } if (sizecell == 2) { dma_range[3 + addrcell + 0] = size >> 32; dma_range[3 + addrcell + 1] = size & 0xffffffff; } else { dma_range[3 + addrcell + 0] = size & 0xffffffff; } dma_range += (3 + addrcell + sizecell); } len = dma_range - &dma_ranges[0]; if (len) fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); return 0; } #endif