void ft_fixup_num_cores(void *blob) { int off, num_cores, del_cores; del_cores = 0; num_cores = cpu_numcores(); off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); while (off != -FDT_ERR_NOTFOUND) { u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0); u32 phys_cpu_id = thread_to_core(*reg); if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) { int ph = fdt_get_phandle(blob, off); /* Delete the cpu node once there are no cpu handles */ if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) { fdt_del_node(blob, off); del_cores++; } /* either we deleted some cpu handles or the cpu node * so we reset the offset back to the start since we * can't trust the offsets anymore */ off = -1; } off = fdt_node_offset_by_prop_value(blob, off, "device_type", "cpu", 4); } debug ("%x core system found\n", num_cores); debug ("deleted %d extra core entry entries from device tree\n", del_cores); }
int core_to_pos(int nr) { u32 cores = cpu_mask(); int i, count = 0; if (nr == 0) { return 0; } else if (nr >= hweight32(cores)) { puts("Not a valid core number.\n"); return -1; } for (i = 1; i < 32; i++) { if (is_core_valid(i)) { count++; if (count == nr) break; } } return count; }