diff options
Diffstat (limited to 'sys/arm/mv/common.c')
| -rw-r--r-- | sys/arm/mv/common.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sys/arm/mv/common.c b/sys/arm/mv/common.c index d4bee64..366fcf1 100644 --- a/sys/arm/mv/common.c +++ b/sys/arm/mv/common.c @@ -2078,9 +2078,79 @@ fdt_fixup_busfreq(phandle_t root) OF_setprop(sb, "bus-frequency", (void *)&freq, sizeof(freq)); } +static void +fdt_fixup_ranges(phandle_t root) +{ + phandle_t node; + pcell_t par_addr_cells, addr_cells, size_cells; + pcell_t ranges[3], reg[2], *rangesptr; + int len, tuple_size, tuples_count; + uint32_t base; + + /* Fix-up SoC ranges according to real fdt_immr_pa */ + if ((node = fdt_find_compatible(root, "simple-bus", 1)) != 0) { + if (fdt_addrsize_cells(node, &addr_cells, &size_cells) == 0 && + (par_addr_cells = fdt_parent_addr_cells(node) <= 2)) { + tuple_size = sizeof(pcell_t) * (par_addr_cells + + addr_cells + size_cells); + len = OF_getprop(node, "ranges", ranges, + sizeof(ranges)); + tuples_count = len / tuple_size; + /* Unexpected settings are not supported */ + if (tuples_count != 1) + goto fixup_failed; + + rangesptr = &ranges[0]; + rangesptr += par_addr_cells; + base = fdt_data_get((void *)rangesptr, addr_cells); + *rangesptr = cpu_to_fdt32(fdt_immr_pa); + if (OF_setprop(node, "ranges", (void *)&ranges[0], + sizeof(ranges)) < 0) + goto fixup_failed; + } + } + + /* Fix-up PCIe reg according to real PCIe registers' PA */ + if ((node = fdt_find_compatible(root, "mrvl,pcie", 1)) != 0) { + if (fdt_addrsize_cells(OF_parent(node), &par_addr_cells, + &size_cells) == 0) { + tuple_size = sizeof(pcell_t) * (par_addr_cells + + size_cells); + len = OF_getprop(node, "reg", reg, sizeof(reg)); + tuples_count = len / tuple_size; + /* Unexpected settings are not supported */ + if (tuples_count != 1) + goto fixup_failed; + + base = fdt_data_get((void *)®[0], par_addr_cells); + base &= ~0xFF000000; + base |= fdt_immr_pa; + reg[0] = cpu_to_fdt32(base); + if (OF_setprop(node, "reg", (void *)®[0], + sizeof(reg)) < 0) + goto fixup_failed; + } + } + /* Fix-up succeeded. May return and continue */ + return; + +fixup_failed: + while (1) { + /* + * In case of any error while fixing ranges just hang. + * 1. No message can be displayed yet since console + * is not initialized. + * 2. Going further will cause failure on bus_space_map() + * relying on the wrong ranges or data abort when + * accessing PCIe registers. + */ + } +} + struct fdt_fixup_entry fdt_fixup_table[] = { { "mrvl,DB-88F6281", &fdt_fixup_busfreq }, { "mrvl,DB-78460", &fdt_fixup_busfreq }, + { "mrvl,DB-78460", &fdt_fixup_ranges }, { NULL, NULL } }; |
