1 #if CONFIG_HAVE_OPTION_TABLE
2 #include "option_table.h"
5 //it takes the CONFIG_ENABLE_APIC_EXT_ID and CONFIG_APIC_ID_OFFSET and CONFIG_LIFT_BSP_APIC_ID
7 #if CONFIG_K8_REV_F_SUPPORT == 0
10 // for rev F, need to set FID to max
16 #ifndef SET_FIDVID_CORE0_ONLY
17 /* MSR FIDVID_CTL and FIDVID_STATUS are shared by cores, so may don't need to do twice */
18 #define SET_FIDVID_CORE0_ONLY 1
21 typedef void (*process_ap_t) (u32 apicid, void *gp);
23 //core_range = 0 : all cores
24 //core range = 1 : core 0 only
25 //core range = 2 : cores other than core0
27 static void for_each_ap(u32 bsp_apicid, u32 core_range, process_ap_t process_ap,
30 // here assume the OS don't change our apicid
36 u32 e0_later_single_core;
40 /* get_nodes define in in_coherent_ht.c */
43 if (!CONFIG_LOGICAL_CPUS ||
44 read_option(CMOS_VSTART_multi_core, CMOS_VLEN_multi_core, 0) != 0) { // 0 means multi core
50 /* here I assume that all node are same stepping, otherwise we can use use nb_cfg_54 from bsp for all nodes */
51 nb_cfg_54 = read_nb_cfg_54();
53 for (i = 0; i < nodes; i++) {
54 e0_later_single_core = 0;
55 j = ((pci_read_config32(PCI_DEV(0, 0x18 + i, 3), 0xe8) >> 12) &
58 if (j == 0) { // if it is single core, we need to increase siblings for apic calculation
59 #if CONFIG_K8_REV_F_SUPPORT == 0
60 e0_later_single_core = is_e0_later_in_bsp(i); // single core
62 e0_later_single_core = is_cpu_f0_in_bsp(i); // We can read cpuid(1) from Func3
65 if (e0_later_single_core) {
73 if (core_range == 2) {
79 if (e0_later_single_core || disable_siblings
80 || (core_range == 1)) {
86 for (j = jstart; j <= jend; j++) {
88 i * (nb_cfg_54 ? (siblings + 1) : 1) +
89 j * (nb_cfg_54 ? 1 : 8);
91 #if (CONFIG_ENABLE_APIC_EXT_ID == 1)
92 #if CONFIG_LIFT_BSP_APIC_ID == 0
93 if ((i != 0) || (j != 0)) /* except bsp */
95 ap_apicid += CONFIG_APIC_ID_OFFSET;
98 if (ap_apicid == bsp_apicid)
101 process_ap(ap_apicid, gp);
107 static inline int lapic_remote_read(int apicid, int reg, u32 *pvalue)
112 lapic_wait_icr_idle();
113 lapic_write(LAPIC_ICR2, SET_LAPIC_DEST_FIELD(apicid));
114 lapic_write(LAPIC_ICR, LAPIC_DM_REMRD | (reg >> 4));
116 /* Extra busy check compared to lapic.h */
119 status = lapic_read(LAPIC_ICR) & LAPIC_ICR_BUSY;
120 } while (status == LAPIC_ICR_BUSY && timeout++ < 1000);
124 status = lapic_read(LAPIC_ICR) & LAPIC_ICR_RR_MASK;
125 } while (status == LAPIC_ICR_RR_INPROG && timeout++ < 1000);
129 if (status == LAPIC_ICR_RR_VALID) {
130 *pvalue = lapic_read(LAPIC_RRR);
136 #define LAPIC_MSG_REG 0x380
139 static void init_fidvid_ap(u32 bsp_apicid, u32 apicid);
142 static inline __attribute__ ((always_inline))
143 void print_apicid_nodeid_coreid(u32 apicid, struct node_core_id id,
147 "%s --- { APICID = %02x NODEID = %02x COREID = %02x} ---\n", str,
148 apicid, id.nodeid, id.coreid);
151 static u32 wait_cpu_state(u32 apicid, u32 state)
157 if (lapic_remote_read(apicid, LAPIC_MSG_REG, &readback) != 0)
159 if ((readback & 0xff) == state) {
161 break; //target cpu is in stage started
173 static void wait_ap_started(u32 ap_apicid, void *gp)
176 timeout = wait_cpu_state(ap_apicid, 0x33); // started
177 printk(BIOS_DEBUG, "* AP %02x", ap_apicid);
179 printk(BIOS_DEBUG, " timed out:%08x\n", timeout);
181 printk(BIOS_DEBUG, "started\n");
185 void wait_all_aps_started(u32 bsp_apicid)
187 for_each_ap(bsp_apicid, 0, wait_ap_started, (void *)0);
190 void wait_all_other_cores_started(u32 bsp_apicid)
192 // all aps other than core0
193 printk(BIOS_DEBUG, "started ap apicid: ");
194 for_each_ap(bsp_apicid, 2, wait_ap_started, (void *)0);
195 printk(BIOS_DEBUG, "\n");
198 void allow_all_aps_stop(u32 bsp_apicid)
202 lapic_write(LAPIC_MSG_REG, (bsp_apicid << 24) | 0x44);
205 static void STOP_CAR_AND_CPU(void)
207 disable_cache_as_ram(); // inline
208 /* stop all cores except node0/core0 the bsp .... */
212 #if RAMINIT_SYSINFO == 1
213 static u32 init_cpus(u32 cpu_init_detectedx, struct sys_info *sysinfo)
215 static u32 init_cpus(u32 cpu_init_detectedx)
220 struct node_core_id id;
223 * already set early mtrr in cache_as_ram.inc
226 /* that is from initial apicid, we need nodeid and coreid
228 id = get_node_core_id_x();
230 /* NB_CFG MSR is shared between cores, so we need make sure
231 core0 is done at first --- use wait_all_core0_started */
232 if (id.coreid == 0) {
233 set_apicid_cpuid_lo(); /* only set it on core0 */
234 #if (CONFIG_ENABLE_APIC_EXT_ID == 1)
235 enable_apic_ext_id(id.nodeid);
240 // init_timer(); // We need TMICT to pass msg for FID/VID change
242 #if (CONFIG_ENABLE_APIC_EXT_ID == 1)
243 u32 initial_apicid = get_initial_apicid();
245 #if CONFIG_LIFT_BSP_APIC_ID == 0
246 if (initial_apicid != 0) // other than bsp
249 /* use initial apic id to lift it */
250 u32 dword = lapic_read(LAPIC_ID);
251 dword &= ~(0xff << 24);
253 (((initial_apicid + CONFIG_APIC_ID_OFFSET) & 0xff) << 24);
255 lapic_write(LAPIC_ID, dword);
257 #if CONFIG_LIFT_BSP_APIC_ID == 1
258 bsp_apicid += CONFIG_APIC_ID_OFFSET;
263 /* get the apicid, it may be lifted already */
267 // show our apicid, nodeid, and coreid
268 if (id.coreid == 0) {
269 if (id.nodeid != 0) //all core0 except bsp
270 print_apicid_nodeid_coreid(apicid, id, " core0: ");
271 } else { //all other cores
272 print_apicid_nodeid_coreid(apicid, id, " corex: ");
276 if (cpu_init_detectedx) {
277 print_apicid_nodeid_coreid(apicid, id,
278 "\n\n\nINIT detected from ");
279 printk(BIOS_DEBUG, "\nIssuing SOFT_RESET...\n");
283 if (id.coreid == 0) {
284 distinguish_cpu_resets(id.nodeid);
285 // start_other_core(id.nodeid); // start second core in first cpu, only allowed for nb_cfg_54 is not set
287 //here don't need to wait
288 lapic_write(LAPIC_MSG_REG, (apicid << 24) | 0x33); // mark the cpu is started
290 if (apicid != bsp_apicid) {
295 #if (CONFIG_LOGICAL_CPUS == 1) && (SET_FIDVID_CORE0_ONLY == 1)
296 if (id.coreid == 0) // only need set fid for core0
298 init_fidvid_ap(bsp_apicid, apicid);
301 // We need to stop the CACHE as RAM for this CPU, really?
302 while (timeout && (loop-- > 0)) {
303 timeout = wait_cpu_state(bsp_apicid, 0x44);
307 "while waiting for BSP signal to STOP, timeout in ap %02x\n",
310 lapic_write(LAPIC_MSG_REG, (apicid << 24) | 0x44); // bsp can not check it before stop_this_cpu
311 set_var_mtrr(0, 0x00000000, CONFIG_RAMTOP, MTRR_TYPE_WRBACK);
312 #if CONFIG_MEM_TRAIN_SEQ == 1
313 train_ram_on_node(id.nodeid, id.coreid, sysinfo,
314 (unsigned)STOP_CAR_AND_CPU);
323 static u32 is_core0_started(u32 nodeid)
327 device = PCI_DEV(0, 0x18 + nodeid, 0);
328 htic = pci_read_config32(device, HT_INIT_CONTROL);
329 htic &= HTIC_INIT_Detect;
333 void wait_all_core0_started(void)
335 /* When core0 is started, it will distingush_cpu_resets
336 * So wait for that to finish */
338 u32 nodes = get_nodes();
340 printk(BIOS_DEBUG, "core0 started: ");
341 for (i = 1; i < nodes; i++) { // skip bsp, because it is running on bsp
342 while (!is_core0_started(i)) {
344 printk(BIOS_DEBUG, " %02x", i);
346 printk(BIOS_DEBUG, "\n");