1 /* Needed so the AMD K8 runs correctly. */
2 /* this should be done by Eric
3 * 2004.11 yhlu add d0 e0 support
4 * 2004.12 yhlu add dual core support
5 * 2005.02 yhlu add e0 memory hole support
8 * 2005.08 yhlu add microcode support
11 #include <console/console.h>
12 #include <cpu/x86/msr.h>
13 #include <cpu/amd/mtrr.h>
14 #include <device/device.h>
15 #include <device/pci.h>
17 #include <cpu/x86/msr.h>
18 #include <cpu/x86/pae.h>
19 #include <pc80/mc146818rtc.h>
20 #include <cpu/x86/lapic.h>
21 #include "northbridge/amd/amdk8/amdk8.h"
22 #include <cpu/amd/model_fxx_rev.h>
23 #include <cpu/amd/microcode.h>
25 #include <cpu/x86/cache.h>
26 #include <cpu/x86/mtrr.h>
27 #include <cpu/amd/multicore.h>
28 #include <cpu/amd/model_fxx_msr.h>
30 #if CONFIG_WAIT_BEFORE_CPUS_INIT
31 void cpus_ready_for_init(void)
33 #if CONFIG_MEM_TRAIN_SEQ == 1
34 struct sys_info *sysinfox = (struct sys_info *)((CONFIG_RAMTOP) - CONFIG_DCACHE_RAM_GLOBAL_VAR_SIZE);
35 // wait for ap memory to trained
36 wait_all_core0_mem_trained(sysinfox);
41 #if CONFIG_K8_REV_F_SUPPORT == 0
42 int is_e0_later_in_bsp(int nodeid)
47 if (nodeid == 0) { // we don't need to do that for node 0 in core0/node0
48 return !is_cpu_pre_e0();
50 // d0 will be treated as e0 with this methods, but the d0 nb_cfg_54 always 0
52 dev = dev_find_slot(0, PCI_DEVFN(0x18 + nodeid, 2));
55 val_old = pci_read_config32(dev, 0x80);
58 pci_write_config32(dev, 0x80, val);
59 val = pci_read_config32(dev, 0x80);
60 e0_later = !!(val & (1 << 3));
61 if (e0_later) { // pre_e0 bit 3 always be 0 and can not be changed
62 pci_write_config32(dev, 0x80, val_old); // restore it
69 #if CONFIG_K8_REV_F_SUPPORT == 1
70 int is_cpu_f0_in_bsp(int nodeid)
74 dev = dev_find_slot(0, PCI_DEVFN(0x18 + nodeid, 3));
75 dword = pci_read_config32(dev, 0xfc);
76 return (dword & 0xfff00) == 0x40f00;
80 #define MCI_STATUS 0x401
82 static inline msr_t rdmsr_amd(u32 index)
87 :"=a"(result.lo), "=d"(result.hi)
88 :"c"(index), "D"(0x9c5a203a)
93 static inline void wrmsr_amd(u32 index, msr_t msr)
98 :"c"(index), "a"(msr.lo), "d"(msr.hi), "D"(0x9c5a203a)
103 #define ZERO_CHUNK_KB 0x800UL /* 2M */
104 #define TOLM_KB 0x400000UL
112 struct mtrr mtrrs[MTRR_COUNT];
113 msr_t top_mem, top_mem2;
117 static void save_mtrr_state(struct mtrr_state *state)
120 for (i = 0; i < MTRR_COUNT; i++) {
121 state->mtrrs[i].base = rdmsr(MTRRphysBase_MSR(i));
122 state->mtrrs[i].mask = rdmsr(MTRRphysMask_MSR(i));
124 state->top_mem = rdmsr(TOP_MEM);
125 state->top_mem2 = rdmsr(TOP_MEM2);
126 state->def_type = rdmsr(MTRRdefType_MSR);
129 static void restore_mtrr_state(struct mtrr_state *state)
134 for (i = 0; i < MTRR_COUNT; i++) {
135 wrmsr(MTRRphysBase_MSR(i), state->mtrrs[i].base);
136 wrmsr(MTRRphysMask_MSR(i), state->mtrrs[i].mask);
138 wrmsr(TOP_MEM, state->top_mem);
139 wrmsr(TOP_MEM2, state->top_mem2);
140 wrmsr(MTRRdefType_MSR, state->def_type);
146 static void print_mtrr_state(struct mtrr_state *state)
149 for (i = 0; i < MTRR_COUNT; i++) {
150 printk(BIOS_DEBUG, "var mtrr %d: %08x%08x mask: %08x%08x\n",
152 state->mtrrs[i].base.hi, state->mtrrs[i].base.lo,
153 state->mtrrs[i].mask.hi, state->mtrrs[i].mask.lo);
155 printk(BIOS_DEBUG, "top_mem: %08x%08x\n",
156 state->top_mem.hi, state->top_mem.lo);
157 printk(BIOS_DEBUG, "top_mem2: %08x%08x\n",
158 state->top_mem2.hi, state->top_mem2.lo);
159 printk(BIOS_DEBUG, "def_type: %08x%08x\n",
160 state->def_type.hi, state->def_type.lo);
164 static void set_init_ecc_mtrrs(void)
170 /* First clear all of the msrs to be safe */
171 for (i = 0; i < MTRR_COUNT; i++) {
173 zero.lo = zero.hi = 0;
174 wrmsr(MTRRphysBase_MSR(i), zero);
175 wrmsr(MTRRphysMask_MSR(i), zero);
178 /* Write back cache the first 1MB */
180 msr.lo = 0x00000000 | MTRR_TYPE_WRBACK;
181 wrmsr(MTRRphysBase_MSR(0), msr);
183 msr.lo = ~((CONFIG_RAMTOP) - 1) | 0x800;
184 wrmsr(MTRRphysMask_MSR(0), msr);
186 /* Set the default type to write combining */
188 msr.lo = 0xc00 | MTRR_TYPE_WRCOMB;
189 wrmsr(MTRRdefType_MSR, msr);
191 /* Set TOP_MEM to 4G */
199 static inline void clear_2M_ram(unsigned long basek,
200 struct mtrr_state *mtrr_state)
202 unsigned long limitk;
206 /* Report every 64M */
207 if ((basek % (64 * 1024)) == 0) {
209 /* Restore the normal state */
211 restore_mtrr_state(mtrr_state);
214 /* Print a status message */
215 printk(BIOS_DEBUG, "%c", (basek >= TOLM_KB) ? '+' : '-');
217 /* Return to the initialization state */
218 set_init_ecc_mtrrs();
223 limitk = (basek + ZERO_CHUNK_KB) & ~(ZERO_CHUNK_KB - 1);
225 /* couldn't happen, memory must on 2M boundary */
230 size = (limitk - basek) << 10;
231 addr = map_2M_page(basek >> 11);
232 if (addr == MAPPING_ERROR) {
233 printk(BIOS_ERR, "Cannot map page: %lx\n", basek >> 11);
237 /* clear memory 2M (limitk - basek) */
238 addr = (void *)(((uint32_t) addr) | ((basek & 0x7ff) << 10));
239 memset(addr, 0, size);
242 static void init_ecc_memory(unsigned node_id)
244 unsigned long startk, begink, endk;
246 struct mtrr_state mtrr_state;
248 device_t f1_dev, f2_dev, f3_dev;
249 int enable_scrubbing;
252 f1_dev = dev_find_slot(0, PCI_DEVFN(0x18 + node_id, 1));
254 die("Cannot find cpu function 1\n");
256 f2_dev = dev_find_slot(0, PCI_DEVFN(0x18 + node_id, 2));
258 die("Cannot find cpu function 2\n");
260 f3_dev = dev_find_slot(0, PCI_DEVFN(0x18 + node_id, 3));
262 die("Cannot find cpu function 3\n");
265 /* See if we scrubbing should be enabled */
266 enable_scrubbing = 1;
267 get_option(&enable_scrubbing, "hw_scrubber");
269 /* Enable cache scrubbing at the lowest possible rate */
270 if (enable_scrubbing) {
271 pci_write_config32(f3_dev, SCRUB_CONTROL,
272 (SCRUB_84ms << 16) | (SCRUB_84ms << 8) |
275 pci_write_config32(f3_dev, SCRUB_CONTROL,
276 (SCRUB_NONE << 16) | (SCRUB_NONE << 8) |
278 printk(BIOS_DEBUG, "Scrubbing Disabled\n");
281 /* If ecc support is not enabled don't touch memory */
282 dcl = pci_read_config32(f2_dev, DRAM_CONFIG_LOW);
283 if (!(dcl & DCL_DimmEccEn)) {
284 printk(BIOS_DEBUG, "ECC Disabled\n");
289 (pci_read_config32(f1_dev, 0x40 + (node_id * 8)) & 0xffff0000) >> 2;
291 ((pci_read_config32(f1_dev, 0x44 + (node_id * 8)) & 0xffff0000) >>
294 #if CONFIG_HW_MEM_HOLE_SIZEK != 0
295 unsigned long hole_startk = 0;
297 #if CONFIG_K8_REV_F_SUPPORT == 0
298 if (!is_cpu_pre_e0()) {
302 val = pci_read_config32(f1_dev, 0xf0);
304 hole_startk = ((val & (0xff << 24)) >> 10);
306 #if CONFIG_K8_REV_F_SUPPORT == 0
311 /* Don't start too early */
313 if (begink < (CONFIG_RAMTOP >> 10)) {
314 begink = (CONFIG_RAMTOP >> 10);
317 printk(BIOS_DEBUG, "Clearing memory %luK - %luK: ", begink, endk);
319 /* Save the normal state */
320 save_mtrr_state(&mtrr_state);
322 /* Switch to the init ecc state */
323 set_init_ecc_mtrrs();
326 /* Walk through 2M chunks and zero them */
327 #if CONFIG_HW_MEM_HOLE_SIZEK != 0
328 /* here hole_startk can not be equal to begink, never. Also hole_startk is in 2M boundary, 64M? */
329 if ((hole_startk != 0)
330 && ((begink < hole_startk) && (endk > (4 * 1024 * 1024)))) {
331 for (basek = begink; basek < hole_startk;
332 basek = ((basek + ZERO_CHUNK_KB) & ~(ZERO_CHUNK_KB - 1))) {
333 clear_2M_ram(basek, &mtrr_state);
335 for (basek = 4 * 1024 * 1024; basek < endk;
336 basek = ((basek + ZERO_CHUNK_KB) & ~(ZERO_CHUNK_KB - 1))) {
337 clear_2M_ram(basek, &mtrr_state);
341 for (basek = begink; basek < endk;
342 basek = ((basek + ZERO_CHUNK_KB) & ~(ZERO_CHUNK_KB - 1))) {
343 clear_2M_ram(basek, &mtrr_state);
346 /* Restore the normal state */
348 restore_mtrr_state(&mtrr_state);
351 /* Set the scrub base address registers */
352 pci_write_config32(f3_dev, SCRUB_ADDR_LOW, startk << 10);
353 pci_write_config32(f3_dev, SCRUB_ADDR_HIGH, startk >> 22);
355 /* Enable the scrubber? */
356 if (enable_scrubbing) {
357 /* Enable scrubbing at the lowest possible rate */
358 pci_write_config32(f3_dev, SCRUB_CONTROL,
359 (SCRUB_84ms << 16) | (SCRUB_84ms << 8) |
363 printk(BIOS_DEBUG, " done\n");
366 static inline void k8_errata(void)
369 #if CONFIG_K8_REV_F_SUPPORT == 0
370 if (is_cpu_pre_c0()) {
372 msr = rdmsr(HWCR_MSR);
374 wrmsr(HWCR_MSR, msr);
377 msr = rdmsr_amd(BU_CFG_MSR);
378 msr.hi |= (1 << (45 - 32));
379 wrmsr_amd(BU_CFG_MSR, msr);
382 msr = rdmsr_amd(DC_CFG_MSR);
384 wrmsr_amd(DC_CFG_MSR, msr);
387 /* I can't touch this msr on early buggy cpus */
388 if (!is_cpu_pre_b3()) {
391 msr = rdmsr(NB_CFG_MSR);
394 if (!is_cpu_pre_c0() && is_cpu_pre_d0()) {
395 /* D0 later don't need it */
396 /* Erratum 86 Disable data masking on C0 and
397 * later processor revs.
398 * FIXME this is only needed if ECC is enabled.
400 msr.hi |= 1 << (36 - 32);
402 wrmsr(NB_CFG_MSR, msr);
406 if (!is_cpu_pre_c0() && is_cpu_pre_d0()) {
407 msr = rdmsr_amd(DC_CFG_MSR);
409 wrmsr_amd(DC_CFG_MSR, msr);
413 if (is_cpu_pre_d0()) {
414 msr = rdmsr_amd(IC_CFG_MSR);
416 wrmsr_amd(IC_CFG_MSR, msr);
419 /* Erratum 91 prefetch miss is handled in the kernel */
421 /* Erratum 106 ... */
422 msr = rdmsr_amd(LS_CFG_MSR);
424 wrmsr_amd(LS_CFG_MSR, msr);
426 /* Erratum 107 ... */
427 msr = rdmsr_amd(BU_CFG_MSR);
428 msr.hi |= 1 << (43 - 32);
429 wrmsr_amd(BU_CFG_MSR, msr);
432 /* Erratum 110 ... */
433 msr = rdmsr_amd(CPU_ID_HYPER_EXT_FEATURES);
435 wrmsr_amd(CPU_ID_HYPER_EXT_FEATURES, msr);
439 #if CONFIG_K8_REV_F_SUPPORT == 0
440 if (!is_cpu_pre_e0())
443 /* Erratum 110 ... */
444 msr = rdmsr_amd(CPU_ID_EXT_FEATURES_MSR);
446 wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr);
450 msr = rdmsr(HWCR_MSR);
452 wrmsr(HWCR_MSR, msr);
454 #if CONFIG_K8_REV_F_SUPPORT == 1
456 msr = rdmsr(NB_CFG_MSR);
458 wrmsr(NB_CFG_MSR, msr);
464 static unsigned ehci_debug_addr;
467 static void model_fxx_init(device_t dev)
471 struct node_core_id id;
474 if (!ehci_debug_addr)
475 ehci_debug_addr = get_ehci_debug();
479 /* Turn on caching if we haven't already */
485 set_ehci_debug(ehci_debug_addr);
488 /* Update the microcode */
489 model_fxx_update_microcode(dev->device);
493 /* zero the machine check error status registers */
496 for (i = 0; i < 5; i++) {
497 wrmsr(MCI_STATUS + (i * 4), msr);
502 /* Set SMMLOCK to avoid exploits messing with SMM */
503 msr = rdmsr(HWCR_MSR);
505 wrmsr(HWCR_MSR, msr);
509 /* Set the processor name string */
510 init_processor_name();
512 /* Enable the local cpu apics */
515 #if CONFIG_LOGICAL_CPUS == 1
516 u32 siblings = cpuid_ecx(0x80000008) & 0xff;
519 msr = rdmsr_amd(CPU_ID_FEATURES_MSR);
521 wrmsr_amd(CPU_ID_FEATURES_MSR, msr);
523 msr = rdmsr_amd(LOGICAL_CPUS_NUM_MSR);
524 msr.lo = (siblings + 1) << 16;
525 wrmsr_amd(LOGICAL_CPUS_NUM_MSR, msr);
527 msr = rdmsr_amd(CPU_ID_EXT_FEATURES_MSR);
528 msr.hi |= 1 << (33 - 32);
529 wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr);
533 id = get_node_core_id(read_nb_cfg_54()); // pre e0 nb_cfg_54 can not be set
535 /* Is this a bad location? In particular can another node prefecth
536 * data from this node before we have initialized it?
539 init_ecc_memory(id.nodeid); // only do it for core 0
542 static struct device_operations cpu_dev_ops = {
543 .init = model_fxx_init,
546 static struct cpu_device_id cpu_table[] = {
547 #if CONFIG_K8_REV_F_SUPPORT == 0
548 { X86_VENDOR_AMD, 0xf40 }, /* SH-B0 (socket 754) */
549 { X86_VENDOR_AMD, 0xf50 }, /* SH-B0 (socket 940) */
550 { X86_VENDOR_AMD, 0xf51 }, /* SH-B3 (socket 940) */
551 { X86_VENDOR_AMD, 0xf58 }, /* SH-C0 (socket 940) */
552 { X86_VENDOR_AMD, 0xf48 }, /* SH-C0 (socket 754) */
553 { X86_VENDOR_AMD, 0xf5a }, /* SH-CG (socket 940) */
554 { X86_VENDOR_AMD, 0xf4a }, /* SH-CG (socket 754) */
555 { X86_VENDOR_AMD, 0xf7a }, /* SH-CG (socket 939) */
556 { X86_VENDOR_AMD, 0xfc0 }, /* DH-CG (socket 754) */
557 { X86_VENDOR_AMD, 0xfe0 }, /* DH-CG (socket 754) */
558 { X86_VENDOR_AMD, 0xff0 }, /* DH-CG (socket 939) */
559 { X86_VENDOR_AMD, 0xf82 }, /* CH-CG (socket 754) */
560 { X86_VENDOR_AMD, 0xfb2 }, /* CH-CG (socket 939) */
563 { X86_VENDOR_AMD, 0x10f50 }, /* SH-D0 (socket 940) */
564 { X86_VENDOR_AMD, 0x10f40 }, /* SH-D0 (socket 754) */
565 { X86_VENDOR_AMD, 0x10f70 }, /* SH-D0 (socket 939) */
566 { X86_VENDOR_AMD, 0x10fc0 }, /* DH-D0 (socket 754) */
567 { X86_VENDOR_AMD, 0x10ff0 }, /* DH-D0 (socket 939) */
568 { X86_VENDOR_AMD, 0x10f80 }, /* CH-D0 (socket 754) */
569 { X86_VENDOR_AMD, 0x10fb0 }, /* CH-D0 (socket 939) */
572 { X86_VENDOR_AMD, 0x20f50 }, /* SH-E0 */
573 { X86_VENDOR_AMD, 0x20f40 },
574 { X86_VENDOR_AMD, 0x20f70 },
575 { X86_VENDOR_AMD, 0x20fc0 }, /* DH-E3 (socket 754) */
576 { X86_VENDOR_AMD, 0x20ff0 }, /* DH-E3 (socket 939) */
577 { X86_VENDOR_AMD, 0x20f10 }, /* JH-E1 (socket 940) */
578 { X86_VENDOR_AMD, 0x20f51 }, /* SH-E4 (socket 940) */
579 { X86_VENDOR_AMD, 0x20f71 }, /* SH-E4 (socket 939) */
580 { X86_VENDOR_AMD, 0x20fb1 }, /* BH-E4 (socket 939) */
581 { X86_VENDOR_AMD, 0x20f42 }, /* SH-E5 (socket 754) */
582 { X86_VENDOR_AMD, 0x20ff2 }, /* DH-E6 (socket 939) */
583 { X86_VENDOR_AMD, 0x20fc2 }, /* DH-E6 (socket 754) */
584 { X86_VENDOR_AMD, 0x20f12 }, /* JH-E6 (socket 940) */
585 { X86_VENDOR_AMD, 0x20f32 }, /* JH-E6 (socket 939) */
586 { X86_VENDOR_AMD, 0x30ff2 }, /* E4 ? */
589 #if CONFIG_K8_REV_F_SUPPORT == 1
593 * See Revision Guide for AMD NPT Family 0Fh Processors,
594 * Publication #33610, Revision: 3.30, February 2008.
596 * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/33610.pdf
598 { X86_VENDOR_AMD, 0x40f50 }, /* SH-F0 (socket F/1207) */
599 { X86_VENDOR_AMD, 0x40f70 }, /* SH-F0 (socket AM2) */
600 { X86_VENDOR_AMD, 0x40f40 }, /* SH-F0 (socket S1g1) */
601 { X86_VENDOR_AMD, 0x40f11 }, /* JH-F1 (socket F/1207) */
602 { X86_VENDOR_AMD, 0x40f31 }, /* JH-F1 (socket AM2) */
603 { X86_VENDOR_AMD, 0x40f01 }, /* JH-F1 (socket S1g1) */
605 { X86_VENDOR_AMD, 0x40f12 }, /* JH-F2 (socket F/1207) */
606 { X86_VENDOR_AMD, 0x40f32 }, /* JH-F2 (socket AM2) */
607 { X86_VENDOR_AMD, 0x40fb2 }, /* BH-F2 (socket AM2) */
608 { X86_VENDOR_AMD, 0x40f82 }, /* BH-F2 (socket S1g1) */
609 { X86_VENDOR_AMD, 0x40ff2 }, /* DH-F2 (socket AM2) */
610 { X86_VENDOR_AMD, 0x50ff2 }, /* DH-F2 (socket AM2) */
611 { X86_VENDOR_AMD, 0x40fc2 }, /* DH-F2 (socket S1g1) */
612 { X86_VENDOR_AMD, 0x40f13 }, /* JH-F3 (socket F/1207) */
613 { X86_VENDOR_AMD, 0x40f33 }, /* JH-F3 (socket AM2) */
614 { X86_VENDOR_AMD, 0x50fd3 }, /* JH-F3 (socket F/1207) */
615 { X86_VENDOR_AMD, 0xc0f13 }, /* JH-F3 (socket F/1207) */
616 { X86_VENDOR_AMD, 0x50ff3 }, /* DH-F3 (socket AM2) */
617 { X86_VENDOR_AMD, 0x60fb1 }, /* BH-G1 (socket AM2) */
618 { X86_VENDOR_AMD, 0x60f81 }, /* BH-G1 (socket S1g1) */
619 { X86_VENDOR_AMD, 0x60fb2 }, /* BH-G2 (socket AM2) */
620 { X86_VENDOR_AMD, 0x60f82 }, /* BH-G2 (socket S1g1) */
621 { X86_VENDOR_AMD, 0x70ff1 }, /* DH-G1 (socket AM2) */
622 { X86_VENDOR_AMD, 0x60ff2 }, /* DH-G2 (socket AM2) */
623 { X86_VENDOR_AMD, 0x70ff2 }, /* DH-G2 (socket AM2) */
624 { X86_VENDOR_AMD, 0x60fc2 }, /* DH-G2 (socket S1g1) */
625 { X86_VENDOR_AMD, 0x70fc2 }, /* DH-G2 (socket S1g1) */
631 static const struct cpu_driver model_fxx __cpu_driver = {
633 .id_table = cpu_table,