/* $NetBSD: cpu_subr.c,v 1.99 2019/02/06 07:32:50 mrg Exp $ */ /*- * Copyright (c) 2001 Matt Thomas. * Copyright (c) 2001 Tsubai Masanari. * Copyright (c) 1998, 1999, 2001 Internet Research Institute, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by * Internet Research Institute, Inc. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.99 2019/02/06 07:32:50 mrg Exp $"); #include "opt_ppcparam.h" #include "opt_ppccache.h" #include "opt_multiprocessor.h" #include "opt_altivec.h" #include "sysmon_envsys.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void cpu_enable_l2cr(register_t); static void cpu_enable_l3cr(register_t); static void cpu_config_l2cr(int); static void cpu_config_l3cr(int); static void cpu_probe_speed(struct cpu_info *); static void cpu_idlespin(void); static void cpu_set_dfs_xcall(void *, void *); #if NSYSMON_ENVSYS > 0 static void cpu_tau_setup(struct cpu_info *); static void cpu_tau_refresh(struct sysmon_envsys *, envsys_data_t *); #endif extern void init_scom_speedctl(void); int cpu = -1; int ncpus; struct fmttab { register_t fmt_mask; register_t fmt_value; const char *fmt_string; }; /* * This should be one per CPU but since we only support it on 750 variants it * doesn't really matter since none of them support SMP */ envsys_data_t sensor; static const struct fmttab cpu_7450_l2cr_formats[] = { { L2CR_L2E, 0, " disabled" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, { L2CR_L2E, ~0, " 256KB L2 cache" }, { L2CR_L2PE, 0, " no parity" }, { L2CR_L2PE, L2CR_L2PE, " parity enabled" }, { 0, 0, NULL } }; static const struct fmttab cpu_7448_l2cr_formats[] = { { L2CR_L2E, 0, " disabled" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, { L2CR_L2E, ~0, " 1MB L2 cache" }, { L2CR_L2PE, 0, " no parity" }, { L2CR_L2PE, L2CR_L2PE, " parity enabled" }, { 0, 0, NULL } }; static const struct fmttab cpu_7457_l2cr_formats[] = { { L2CR_L2E, 0, " disabled" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, { L2CR_L2E, ~0, " 512KB L2 cache" }, { L2CR_L2PE, 0, " no parity" }, { L2CR_L2PE, L2CR_L2PE, " parity enabled" }, { 0, 0, NULL } }; static const struct fmttab cpu_7450_l3cr_formats[] = { { L3CR_L3DO|L3CR_L3IO, L3CR_L3DO, " data-only" }, { L3CR_L3DO|L3CR_L3IO, L3CR_L3IO, " instruction-only" }, { L3CR_L3DO|L3CR_L3IO, L3CR_L3DO|L3CR_L3IO, " locked" }, { L3CR_L3SIZ, L3SIZ_2M, " 2MB" }, { L3CR_L3SIZ, L3SIZ_1M, " 1MB" }, { L3CR_L3PE|L3CR_L3APE, L3CR_L3PE|L3CR_L3APE, " parity" }, { L3CR_L3PE|L3CR_L3APE, L3CR_L3PE, " data-parity" }, { L3CR_L3PE|L3CR_L3APE, L3CR_L3APE, " address-parity" }, { L3CR_L3PE|L3CR_L3APE, 0, " no-parity" }, { L3CR_L3SIZ, ~0, " L3 cache" }, { L3CR_L3RT, L3RT_MSUG2_DDR, " (DDR SRAM)" }, { L3CR_L3RT, L3RT_PIPELINE_LATE, " (LW SRAM)" }, { L3CR_L3RT, L3RT_PB2_SRAM, " (PB2 SRAM)" }, { L3CR_L3CLK, ~0, " at" }, { L3CR_L3CLK, L3CLK_20, " 2:1" }, { L3CR_L3CLK, L3CLK_25, " 2.5:1" }, { L3CR_L3CLK, L3CLK_30, " 3:1" }, { L3CR_L3CLK, L3CLK_35, " 3.5:1" }, { L3CR_L3CLK, L3CLK_40, " 4:1" }, { L3CR_L3CLK, L3CLK_50, " 5:1" }, { L3CR_L3CLK, L3CLK_60, " 6:1" }, { L3CR_L3CLK, ~0, " ratio" }, { 0, 0, NULL }, }; static const struct fmttab cpu_ibm750_l2cr_formats[] = { { L2CR_L2E, 0, " disabled" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, { 0, ~0, " 512KB" }, { L2CR_L2WT, L2CR_L2WT, " WT" }, { L2CR_L2WT, 0, " WB" }, { L2CR_L2PE, L2CR_L2PE, " with ECC" }, { 0, ~0, " L2 cache" }, { 0, 0, NULL } }; static const struct fmttab cpu_l2cr_formats[] = { { L2CR_L2E, 0, " disabled" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, { L2CR_L2PE, L2CR_L2PE, " parity" }, { L2CR_L2PE, 0, " no-parity" }, { L2CR_L2SIZ, L2SIZ_2M, " 2MB" }, { L2CR_L2SIZ, L2SIZ_1M, " 1MB" }, { L2CR_L2SIZ, L2SIZ_512K, " 512KB" }, { L2CR_L2SIZ, L2SIZ_256K, " 256KB" }, { L2CR_L2WT, L2CR_L2WT, " WT" }, { L2CR_L2WT, 0, " WB" }, { L2CR_L2E, ~0, " L2 cache" }, { L2CR_L2RAM, L2RAM_FLOWTHRU_BURST, " (FB SRAM)" }, { L2CR_L2RAM, L2RAM_PIPELINE_LATE, " (LW SRAM)" }, { L2CR_L2RAM, L2RAM_PIPELINE_BURST, " (PB SRAM)" }, { L2CR_L2CLK, ~0, " at" }, { L2CR_L2CLK, L2CLK_10, " 1:1" }, { L2CR_L2CLK, L2CLK_15, " 1.5:1" }, { L2CR_L2CLK, L2CLK_20, " 2:1" }, { L2CR_L2CLK, L2CLK_25, " 2.5:1" }, { L2CR_L2CLK, L2CLK_30, " 3:1" }, { L2CR_L2CLK, L2CLK_35, " 3.5:1" }, { L2CR_L2CLK, L2CLK_40, " 4:1" }, { L2CR_L2CLK, ~0, " ratio" }, { 0, 0, NULL } }; static void cpu_fmttab_print(const struct fmttab *, register_t); struct cputab { const char name[8]; uint16_t version; uint16_t revfmt; }; #define REVFMT_MAJMIN 1 /* %u.%u */ #define REVFMT_HEX 2 /* 0x%04x */ #define REVFMT_DEC 3 /* %u */ static const struct cputab models[] = { { "601", MPC601, REVFMT_DEC }, { "602", MPC602, REVFMT_DEC }, { "603", MPC603, REVFMT_MAJMIN }, { "603e", MPC603e, REVFMT_MAJMIN }, { "603ev", MPC603ev, REVFMT_MAJMIN }, { "G2", MPCG2, REVFMT_MAJMIN }, { "604", MPC604, REVFMT_MAJMIN }, { "604e", MPC604e, REVFMT_MAJMIN }, { "604ev", MPC604ev, REVFMT_MAJMIN }, { "620", MPC620, REVFMT_HEX }, { "750", MPC750, REVFMT_MAJMIN }, { "750FX", IBM750FX, REVFMT_MAJMIN }, { "750GX", IBM750GX, REVFMT_MAJMIN }, { "7400", MPC7400, REVFMT_MAJMIN }, { "7410", MPC7410, REVFMT_MAJMIN }, { "7450", MPC7450, REVFMT_MAJMIN }, { "7455", MPC7455, REVFMT_MAJMIN }, { "7457", MPC7457, REVFMT_MAJMIN }, { "7447A", MPC7447A, REVFMT_MAJMIN }, { "7448", MPC7448, REVFMT_MAJMIN }, { "8240", MPC8240, REVFMT_MAJMIN }, { "8245", MPC8245, REVFMT_MAJMIN }, { "970", IBM970, REVFMT_MAJMIN }, { "970FX", IBM970FX, REVFMT_MAJMIN }, { "970MP", IBM970MP, REVFMT_MAJMIN }, { "POWER3II", IBMPOWER3II, REVFMT_MAJMIN }, { "", 0, REVFMT_HEX } }; #ifdef MULTIPROCESSOR struct cpu_info cpu_info[CPU_MAXNUM] = { [0] = { .ci_curlwp = &lwp0, }, }; volatile struct cpu_hatch_data *cpu_hatch_data; volatile int cpu_hatch_stack; #define HATCH_STACK_SIZE 0x1000 extern int ticks_per_intr; #include #include #include extern struct bat battable[]; #else struct cpu_info cpu_info[1] = { [0] = { .ci_curlwp = &lwp0, }, }; #endif /*MULTIPROCESSOR*/ int cpu_altivec; register_t cpu_psluserset; register_t cpu_pslusermod; register_t cpu_pslusermask = 0xffff; /* This is to be called from locore.S, and nowhere else. */ void cpu_model_init(void) { u_int pvr, vers; pvr = mfpvr(); vers = pvr >> 16; oeacpufeat = 0; if ((vers >= IBMRS64II && vers <= IBM970GX) || vers == MPC620 || vers == IBMCELL || vers == IBMPOWER6P5) { oeacpufeat |= OEACPU_64; oeacpufeat |= OEACPU_64_BRIDGE; oeacpufeat |= OEACPU_NOBAT; } else if (vers == MPC601) { oeacpufeat |= OEACPU_601; } else if (MPC745X_P(vers)) { register_t hid1 = mfspr(SPR_HID1); if (vers != MPC7450) { register_t hid0 = mfspr(SPR_HID0); /* Enable more SPRG registers */ oeacpufeat |= OEACPU_HIGHSPRG; /* Enable more BAT registers */ oeacpufeat |= OEACPU_HIGHBAT; hid0 |= HID0_HIGH_BAT_EN; /* Enable larger BAT registers */ oeacpufeat |= OEACPU_XBSEN; hid0 |= HID0_XBSEN; mtspr(SPR_HID0, hid0); __asm volatile("sync;isync"); } /* Enable address broadcasting for MP systems */ hid1 |= HID1_SYNCBE | HID1_ABE; mtspr(SPR_HID1, hid1); __asm volatile("sync;isync"); } else if (vers == IBM750FX || vers == IBM750GX) { oeacpufeat |= OEACPU_HIGHBAT; } } void cpu_fmttab_print(const struct fmttab *fmt, register_t data) { for (; fmt->fmt_mask != 0 || fmt->fmt_value != 0; fmt++) { if ((~fmt->fmt_mask & fmt->fmt_value) != 0 || (data & fmt->fmt_mask) == fmt->fmt_value) aprint_normal("%s", fmt->fmt_string); } } void cpu_idlespin(void) { register_t msr; if (powersave <= 0) return; #if defined(_ARCH_PPC64) || defined (PPC_OEA64_BRIDGE) if (cpu_altivec) __asm volatile("dssall"); #endif __asm volatile( "sync;" "mfmsr %0;" "oris %0,%0,%1@h;" /* enter power saving mode */ "mtmsr %0;" "isync;" : "=r"(msr) : "J"(PSL_POW)); } void cpu_probe_cache(void) { u_int assoc, pvr, vers; pvr = mfpvr(); vers = pvr >> 16; /* Presently common across almost all implementations. */ curcpu()->ci_ci.dcache_line_size = 32; curcpu()->ci_ci.icache_line_size = 32; switch (vers) { #define K *1024 case IBM750FX: case IBM750GX: case MPC601: case MPC750: case MPC7400: case MPC7447A: case MPC7448: case MPC7450: case MPC7455: case MPC7457: curcpu()->ci_ci.dcache_size = 32 K; curcpu()->ci_ci.icache_size = 32 K; assoc = 8; break; case MPC603: curcpu()->ci_ci.dcache_size = 8 K; curcpu()->ci_ci.icache_size = 8 K; assoc = 2; break; case MPC603e: case MPC603ev: case MPC604: case MPC8240: case MPC8245: case MPCG2: curcpu()->ci_ci.dcache_size = 16 K; curcpu()->ci_ci.icache_size = 16 K; assoc = 4; break; case MPC604e: case MPC604ev: curcpu()->ci_ci.dcache_size = 32 K; curcpu()->ci_ci.icache_size = 32 K; assoc = 4; break; case IBMPOWER3II: curcpu()->ci_ci.dcache_size = 64 K; curcpu()->ci_ci.icache_size = 32 K; curcpu()->ci_ci.dcache_line_size = 128; curcpu()->ci_ci.icache_line_size = 128; assoc = 128; /* not a typo */ break; case IBM970: case IBM970FX: case IBM970MP: curcpu()->ci_ci.dcache_size = 32 K; curcpu()->ci_ci.icache_size = 64 K; curcpu()->ci_ci.dcache_line_size = 128; curcpu()->ci_ci.icache_line_size = 128; assoc = 2; break; default: curcpu()->ci_ci.dcache_size = PAGE_SIZE; curcpu()->ci_ci.icache_size = PAGE_SIZE; assoc = 1; #undef K } /* * Possibly recolor. */ uvm_page_recolor(atop(curcpu()->ci_ci.dcache_size / assoc)); } struct cpu_info * cpu_attach_common(device_t self, int id) { struct cpu_info *ci; u_int pvr, vers; ci = &cpu_info[id]; #ifndef MULTIPROCESSOR /* * If this isn't the primary CPU, print an error message * and just bail out. */ if (id != 0) { aprint_naive("\n"); aprint_normal(": ID %d\n", id); aprint_normal_dev(self, "processor off-line; " "multiprocessor support not present in kernel\n"); return (NULL); } #endif ci->ci_cpuid = id; ci->ci_idepth = -1; ci->ci_dev = self; ci->ci_idlespin = cpu_idlespin; pvr = mfpvr(); vers = (pvr >> 16) & 0xffff; switch (id) { case 0: /* load my cpu_number to PIR */ switch (vers) { case MPC601: case MPC604: case MPC604e: case MPC604ev: case MPC7400: case MPC7410: case MPC7447A: case MPC7448: case MPC7450: case MPC7455: case MPC7457: mtspr(SPR_PIR, id); } cpu_setup(self, ci); break; default: aprint_naive("\n"); if (id >= CPU_MAXNUM) { aprint_normal(": more than %d cpus?\n", CPU_MAXNUM); panic("cpuattach"); } #ifndef MULTIPROCESSOR aprint_normal(" not configured\n"); return NULL; #else mi_cpu_attach(ci); break; #endif } return (ci); } void cpu_setup(device_t self, struct cpu_info *ci) { u_int pvr, vers; const char * const xname = device_xname(self); const char *bitmask; char hidbuf[128]; char model[80]; #if defined(PPC_OEA64_BRIDGE) || defined(_ARCH_PPC64) char hidbuf_u[128]; const char *bitmasku = NULL; volatile uint64_t hid64_0, hid64_0_save; #endif #if !defined(_ARCH_PPC64) register_t hid0 = 0, hid0_save = 0; #endif pvr = mfpvr(); vers = (pvr >> 16) & 0xffff; cpu_identify(model, sizeof(model)); aprint_naive("\n"); aprint_normal(": %s, ID %d%s\n", model, cpu_number(), cpu_number() == 0 ? " (primary)" : ""); /* set the cpu number */ ci->ci_cpuid = cpu_number(); #if defined(_ARCH_PPC64) __asm volatile("mfspr %0,%1" : "=r"(hid64_0) : "K"(SPR_HID0)); hid64_0_save = hid64_0; #else #if defined(PPC_OEA64_BRIDGE) if ((oeacpufeat & OEACPU_64_BRIDGE) != 0) hid64_0_save = hid64_0 = mfspr(SPR_HID0); else #endif hid0_save = hid0 = mfspr(SPR_HID0); #endif cpu_probe_cache(); /* * Configure power-saving mode. */ switch (vers) { #if !defined(_ARCH_PPC64) case MPC604: case MPC604e: case MPC604ev: /* * Do not have HID0 support settings, but can support * MSR[POW] off */ powersave = 1; break; case MPC603: case MPC603e: case MPC603ev: case MPC7400: case MPC7410: case MPC8240: case MPC8245: case MPCG2: /* Select DOZE mode. */ hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP); hid0 |= HID0_DOZE | HID0_DPM; powersave = 1; break; case MPC750: case IBM750FX: case IBM750GX: /* Select NAP mode. */ hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP); hid0 |= HID0_NAP | HID0_DPM; powersave = 1; break; case MPC7447A: case MPC7448: case MPC7457: case MPC7455: case MPC7450: /* Enable the 7450 branch caches */ hid0 |= HID0_SGE | HID0_BTIC; hid0 |= HID0_LRSTK | HID0_FOLD | HID0_BHT; /* Disable BTIC on 7450 Rev 2.0 or earlier */ if (vers == MPC7450 && (pvr & 0xFFFF) <= 0x0200) hid0 &= ~HID0_BTIC; /* Select NAP mode. */ hid0 &= ~HID0_SLEEP; hid0 |= HID0_NAP | HID0_DPM; powersave = 1; break; #endif case IBM970: case IBM970FX: case IBM970MP: #if defined(_ARCH_PPC64) || defined (PPC_OEA64_BRIDGE) #if !defined(_ARCH_PPC64) KASSERT((oeacpufeat & OEACPU_64_BRIDGE) != 0); #endif hid64_0 &= ~(HID0_64_DOZE | HID0_64_NAP | HID0_64_DEEPNAP); hid64_0 |= HID0_64_NAP | HID0_64_DPM | HID0_64_EX_TBEN | HID0_64_TB_CTRL | HID0_64_EN_MCHK; powersave = 1; break; #endif case IBMPOWER3II: default: /* No power-saving mode is available. */ ; } #ifdef NAPMODE switch (vers) { case IBM750FX: case IBM750GX: case MPC750: case MPC7400: /* Select NAP mode. */ hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP); hid0 |= HID0_NAP; break; } #endif switch (vers) { case IBM750FX: case IBM750GX: case MPC750: hid0 &= ~HID0_DBP; /* XXX correct? */ hid0 |= HID0_EMCP | HID0_BTIC | HID0_SGE | HID0_BHT; break; case MPC7400: case MPC7410: hid0 &= ~HID0_SPD; hid0 |= HID0_EMCP | HID0_BTIC | HID0_SGE | HID0_BHT; hid0 |= HID0_EIEC; break; } /* * according to the 603e manual this is necessary for an external L2 * cache to work properly */ switch (vers) { case MPC603e: hid0 |= HID0_ABE; } #if defined(_ARCH_PPC64) || defined(PPC_OEA64_BRIDGE) #if defined(PPC_OEA64_BRIDGE) if ((oeacpufeat & OEACPU_64_BRIDGE) != 0) { #endif if (hid64_0 != hid64_0_save) { mtspr64(SPR_HID0, hid64_0); } #if defined(PPC_OEA64_BRIDGE) } else { #endif #endif #if !defined(_ARCH_PPC64) if (hid0 != hid0_save) { mtspr(SPR_HID0, hid0); __asm volatile("sync;isync"); } #endif #if defined(PPC_OEA64_BRIDGE) } #endif switch (vers) { case MPC601: bitmask = HID0_601_BITMASK; break; case MPC7447A: case MPC7448: case MPC7450: case MPC7455: case MPC7457: bitmask = HID0_7450_BITMASK; break; case IBM970: case IBM970FX: case IBM970MP: bitmask = HID0_970_BITMASK; #if defined(PPC_OEA64_BRIDGE) || defined(_ARCH_PPC64) bitmasku = HID0_970_BITMASK_U; #endif break; default: bitmask = HID0_BITMASK; break; } #if defined(PPC_OEA64_BRIDGE) || defined(_ARCH_PPC64) if (bitmasku != NULL) { snprintb(hidbuf, sizeof hidbuf, bitmask, hid64_0 & 0xffffffff); snprintb(hidbuf_u, sizeof hidbuf_u, bitmasku, hid64_0 >> 32); aprint_normal_dev(self, "HID0 %s %s, powersave: %d\n", hidbuf_u, hidbuf, powersave); } else #endif { snprintb(hidbuf, sizeof hidbuf, bitmask, hid0); aprint_normal_dev(self, "HID0 %s, powersave: %d\n", hidbuf, powersave); } ci->ci_khz = 0; /* * Display speed and cache configuration. */ switch (vers) { case MPC604: case MPC604e: case MPC604ev: case MPC750: case IBM750FX: case IBM750GX: case MPC7400: case MPC7410: case MPC7447A: case MPC7448: case MPC7450: case MPC7455: case MPC7457: aprint_normal_dev(self, ""); cpu_probe_speed(ci); aprint_normal("%u.%02u MHz", ci->ci_khz / 1000, (ci->ci_khz / 10) % 100); switch (vers) { case MPC7450: /* 7441 does not have L3! */ case MPC7455: /* 7445 does not have L3! */ case MPC7457: /* 7447 does not have L3! */ cpu_config_l3cr(vers); break; case IBM750FX: case IBM750GX: case MPC750: case MPC7400: case MPC7410: case MPC7447A: case MPC7448: cpu_config_l2cr(pvr); break; default: break; } aprint_normal("\n"); break; } #if NSYSMON_ENVSYS > 0 /* * Attach MPC750 temperature sensor to the envsys subsystem. * XXX the 74xx series also has this sensor, but it is not * XXX supported by Motorola and may return values that are off by * XXX 35-55 degrees C. */ if (vers == MPC750 || vers == IBM750FX || vers == IBM750GX) cpu_tau_setup(ci); #endif #if defined(PPC_OEA64) || defined(PPC_OEA64_BRIDGE) if (vers == IBM970MP) init_scom_speedctl(); #endif evcnt_attach_dynamic(&ci->ci_ev_clock, EVCNT_TYPE_INTR, NULL, xname, "clock"); evcnt_attach_dynamic(&ci->ci_ev_traps, EVCNT_TYPE_TRAP, NULL, xname, "traps"); evcnt_attach_dynamic(&ci->ci_ev_kdsi, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "kernel DSI traps"); evcnt_attach_dynamic(&ci->ci_ev_udsi, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "user DSI traps"); evcnt_attach_dynamic(&ci->ci_ev_udsi_fatal, EVCNT_TYPE_TRAP, &ci->ci_ev_udsi, xname, "user DSI failures"); evcnt_attach_dynamic(&ci->ci_ev_kisi, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "kernel ISI traps"); evcnt_attach_dynamic(&ci->ci_ev_isi, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "user ISI traps"); evcnt_attach_dynamic(&ci->ci_ev_isi_fatal, EVCNT_TYPE_TRAP, &ci->ci_ev_isi, xname, "user ISI failures"); evcnt_attach_dynamic(&ci->ci_ev_scalls, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "system call traps"); evcnt_attach_dynamic(&ci->ci_ev_pgm, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "PGM traps"); evcnt_attach_dynamic(&ci->ci_ev_fpu, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "FPU unavailable traps"); evcnt_attach_dynamic(&ci->ci_ev_fpusw, EVCNT_TYPE_TRAP, &ci->ci_ev_fpu, xname, "FPU context switches"); evcnt_attach_dynamic(&ci->ci_ev_ali, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "user alignment traps"); evcnt_attach_dynamic(&ci->ci_ev_ali_fatal, EVCNT_TYPE_TRAP, &ci->ci_ev_ali, xname, "user alignment traps"); evcnt_attach_dynamic(&ci->ci_ev_umchk, EVCNT_TYPE_TRAP, &ci->ci_ev_umchk, xname, "user MCHK failures"); evcnt_attach_dynamic(&ci->ci_ev_vec, EVCNT_TYPE_TRAP, &ci->ci_ev_traps, xname, "AltiVec unavailable"); #ifdef ALTIVEC if (cpu_altivec) { evcnt_attach_dynamic(&ci->ci_ev_vecsw, EVCNT_TYPE_TRAP, &ci->ci_ev_vec, xname, "AltiVec context switches"); } #endif evcnt_attach_dynamic(&ci->ci_ev_ipi, EVCNT_TYPE_INTR, NULL, xname, "IPIs"); } /* * According to a document labeled "PVR Register Settings": ** For integrated microprocessors the PVR register inside the device ** will identify the version of the microprocessor core. You must also ** read the Device ID, PCI register 02, to identify the part and the ** Revision ID, PCI register 08, to identify the revision of the ** integrated microprocessor. * This apparently applies to 8240/8245/8241, PVR 00810101 and 80811014 */ void cpu_identify(char *str, size_t len) { u_int pvr, major, minor; uint16_t vers, rev, revfmt; const struct cputab *cp; size_t n; pvr = mfpvr(); vers = pvr >> 16; rev = pvr; switch (vers) { case MPC7410: minor = (pvr >> 0) & 0xff; major = minor <= 4 ? 1 : 2; break; case MPCG2: /*XXX see note above */ major = (pvr >> 4) & 0xf; minor = (pvr >> 0) & 0xf; break; default: major = (pvr >> 8) & 0xf; minor = (pvr >> 0) & 0xf; } for (cp = models; cp->name[0] != '\0'; cp++) { if (cp->version == vers) break; } if (cpu == -1) cpu = vers; revfmt = cp->revfmt; if (rev == MPC750 && pvr == 15) { revfmt = REVFMT_HEX; } if (cp->name[0] != '\0') { n = snprintf(str, len, "%s (Revision ", cp->name); } else { n = snprintf(str, len, "Version %#x (Revision ", vers); } if (len > n) { switch (revfmt) { case REVFMT_MAJMIN: snprintf(str + n, len - n, "%u.%u)", major, minor); break; case REVFMT_HEX: snprintf(str + n, len - n, "0x%04x)", rev); break; case REVFMT_DEC: snprintf(str + n, len - n, "%u)", rev); break; } } } #ifdef L2CR_CONFIG u_int l2cr_config = L2CR_CONFIG; #else u_int l2cr_config = 0; #endif #ifdef L3CR_CONFIG u_int l3cr_config = L3CR_CONFIG; #else u_int l3cr_config = 0; #endif void cpu_enable_l2cr(register_t l2cr) { register_t msr, x; uint16_t vers; vers = mfpvr() >> 16; /* Disable interrupts and set the cache config bits. */ msr = mfmsr(); mtmsr(msr & ~PSL_EE); #ifdef ALTIVEC if (cpu_altivec) __asm volatile("dssall"); #endif __asm volatile("sync"); mtspr(SPR_L2CR, l2cr & ~L2CR_L2E); __asm volatile("sync"); /* Wait for L2 clock to be stable (640 L2 clocks). */ delay(100); /* Invalidate all L2 contents. */ if (MPC745X_P(vers)) { mtspr(SPR_L2CR, l2cr | L2CR_L2I); do { x = mfspr(SPR_L2CR); } while (x & L2CR_L2I); } else { mtspr(SPR_L2CR, l2cr | L2CR_L2I); do { x = mfspr(SPR_L2CR); } while (x & L2CR_L2IP); } /* Enable L2 cache. */ l2cr |= L2CR_L2E; mtspr(SPR_L2CR, l2cr); mtmsr(msr); } void cpu_enable_l3cr(register_t l3cr) { register_t x; /* By The Book (numbered steps from section 3.7.1.3 of MPC7450UM) */ /* * 1: Set all L3CR bits for final config except L3E, L3I, L3PE, and * L3CLKEN. (also mask off reserved bits in case they were included * in L3CR_CONFIG) */ l3cr &= ~(L3CR_L3E|L3CR_L3I|L3CR_L3PE|L3CR_L3CLKEN|L3CR_RESERVED); mtspr(SPR_L3CR, l3cr); /* 2: Set L3CR[5] (otherwise reserved bit) to 1 */ l3cr |= 0x04000000; mtspr(SPR_L3CR, l3cr); /* 3: Set L3CLKEN to 1*/ l3cr |= L3CR_L3CLKEN; mtspr(SPR_L3CR, l3cr); /* 4/5: Perform a global cache invalidate (ref section 3.7.3.6) */ __asm volatile("dssall;sync"); /* L3 cache is already disabled, no need to clear L3E */ mtspr(SPR_L3CR, l3cr|L3CR_L3I); do { x = mfspr(SPR_L3CR); } while (x & L3CR_L3I); /* 6: Clear L3CLKEN to 0 */ l3cr &= ~L3CR_L3CLKEN; mtspr(SPR_L3CR, l3cr); /* 7: Perform a 'sync' and wait at least 100 CPU cycles */ __asm volatile("sync"); delay(100); /* 8: Set L3E and L3CLKEN */ l3cr |= (L3CR_L3E|L3CR_L3CLKEN); mtspr(SPR_L3CR, l3cr); /* 9: Perform a 'sync' and wait at least 100 CPU cycles */ __asm volatile("sync"); delay(100); } void cpu_config_l2cr(int pvr) { register_t l2cr; u_int vers = (pvr >> 16) & 0xffff; l2cr = mfspr(SPR_L2CR); /* * For MP systems, the firmware may only configure the L2 cache * on the first CPU. In this case, assume that the other CPUs * should use the same value for L2CR. */ if ((l2cr & L2CR_L2E) != 0 && l2cr_config == 0) { l2cr_config = l2cr; } /* * Configure L2 cache if not enabled. */ if ((l2cr & L2CR_L2E) == 0 && l2cr_config != 0) { cpu_enable_l2cr(l2cr_config); l2cr = mfspr(SPR_L2CR); } if ((l2cr & L2CR_L2E) == 0) { aprint_normal(" L2 cache present but not enabled "); return; } aprint_normal(","); switch (vers) { case IBM750FX: case IBM750GX: cpu_fmttab_print(cpu_ibm750_l2cr_formats, l2cr); break; case MPC750: if ((pvr & 0xffffff00) == 0x00082200 /* IBM750CX */ || (pvr & 0xffffef00) == 0x00082300 /* IBM750CXe */) cpu_fmttab_print(cpu_ibm750_l2cr_formats, l2cr); else cpu_fmttab_print(cpu_l2cr_formats, l2cr); break; case MPC7447A: case MPC7457: cpu_fmttab_print(cpu_7457_l2cr_formats, l2cr); return; case MPC7448: cpu_fmttab_print(cpu_7448_l2cr_formats, l2cr); return; case MPC7450: case MPC7455: cpu_fmttab_print(cpu_7450_l2cr_formats, l2cr); break; default: cpu_fmttab_print(cpu_l2cr_formats, l2cr); break; } } void cpu_config_l3cr(int vers) { register_t l2cr; register_t l3cr; l2cr = mfspr(SPR_L2CR); /* * For MP systems, the firmware may only configure the L2 cache * on the first CPU. In this case, assume that the other CPUs * should use the same value for L2CR. */ if ((l2cr & L2CR_L2E) != 0 && l2cr_config == 0) { l2cr_config = l2cr; } /* * Configure L2 cache if not enabled. */ if ((l2cr & L2CR_L2E) == 0 && l2cr_config != 0) { cpu_enable_l2cr(l2cr_config); l2cr = mfspr(SPR_L2CR); } aprint_normal(","); switch (vers) { case MPC7447A: case MPC7457: cpu_fmttab_print(cpu_7457_l2cr_formats, l2cr); return; case MPC7448: cpu_fmttab_print(cpu_7448_l2cr_formats, l2cr); return; default: cpu_fmttab_print(cpu_7450_l2cr_formats, l2cr); break; } l3cr = mfspr(SPR_L3CR); /* * For MP systems, the firmware may only configure the L3 cache * on the first CPU. In this case, assume that the other CPUs * should use the same value for L3CR. */ if ((l3cr & L3CR_L3E) != 0 && l3cr_config == 0) { l3cr_config = l3cr; } /* * Configure L3 cache if not enabled. */ if ((l3cr & L3CR_L3E) == 0 && l3cr_config != 0) { cpu_enable_l3cr(l3cr_config); l3cr = mfspr(SPR_L3CR); } if (l3cr & L3CR_L3E) { aprint_normal(","); cpu_fmttab_print(cpu_7450_l3cr_formats, l3cr); } } void cpu_probe_speed(struct cpu_info *ci) { uint64_t cps; mtspr(SPR_MMCR0, MMCR0_FC); mtspr(SPR_PMC1, 0); mtspr(SPR_MMCR0, MMCR0_PMC1SEL(PMCN_CYCLES)); delay(100000); cps = (mfspr(SPR_PMC1) * 10) + 4999; mtspr(SPR_MMCR0, MMCR0_FC); ci->ci_khz = (cps * cpu_get_dfs()) / 1000; } /* * Read the Dynamic Frequency Switching state and return a divisor for * the maximum frequency. */ int cpu_get_dfs(void) { u_int pvr, vers; pvr = mfpvr(); vers = pvr >> 16; switch (vers) { case MPC7448: if (mfspr(SPR_HID1) & HID1_DFS4) return 4; /* FALLTHROUGH */ case MPC7447A: if (mfspr(SPR_HID1) & HID1_DFS2) return 2; } return 1; } /* * Set the Dynamic Frequency Switching divisor the same for all cpus. */ void cpu_set_dfs(int div) { u_int dfs_mask, pvr, vers; pvr = mfpvr(); vers = pvr >> 16; dfs_mask = 0; switch (vers) { case MPC7448: dfs_mask |= HID1_DFS4; /* FALLTHROUGH */ case MPC7447A: dfs_mask |= HID1_DFS2; break; default: printf("cpu_set_dfs: DFS not supported\n"); return; } #ifdef MULTIPROCESSOR uint64_t where; where = xc_broadcast(0, (xcfunc_t)cpu_set_dfs_xcall, &div, &dfs_mask); xc_wait(where); #else cpu_set_dfs_xcall(&div, &dfs_mask); #endif } static void cpu_set_dfs_xcall(void *arg1, void *arg2) { u_int dfs_mask, hid1, old_hid1; int *divisor, s; divisor = arg1; dfs_mask = *(u_int *)arg2; s = splhigh(); hid1 = old_hid1 = mfspr(SPR_HID1); switch (*divisor) { case 1: hid1 &= ~dfs_mask; break; case 2: hid1 &= ~(dfs_mask & HID1_DFS4); hid1 |= dfs_mask & HID1_DFS2; break; case 4: hid1 &= ~(dfs_mask & HID1_DFS2); hid1 |= dfs_mask & HID1_DFS4; break; } if (hid1 != old_hid1) { __asm volatile("sync"); mtspr(SPR_HID1, hid1); __asm volatile("sync;isync"); } splx(s); } #if NSYSMON_ENVSYS > 0 void cpu_tau_setup(struct cpu_info *ci) { struct sysmon_envsys *sme; int error, therm_delay; mtspr(SPR_THRM1, SPR_THRM_VALID); mtspr(SPR_THRM2, 0); /* * we need to figure out how much 20+us in units of CPU clock cycles * are */ therm_delay = ci->ci_khz / 40; /* 25us just to be safe */ mtspr(SPR_THRM3, SPR_THRM_TIMER(therm_delay) | SPR_THRM_ENABLE); sme = sysmon_envsys_create(); sensor.units = ENVSYS_STEMP; sensor.state = ENVSYS_SINVALID; (void)strlcpy(sensor.desc, "CPU Temp", sizeof(sensor.desc)); if (sysmon_envsys_sensor_attach(sme, &sensor)) { sysmon_envsys_destroy(sme); return; } sme->sme_name = device_xname(ci->ci_dev); sme->sme_cookie = ci; sme->sme_refresh = cpu_tau_refresh; if ((error = sysmon_envsys_register(sme)) != 0) { aprint_error_dev(ci->ci_dev, " unable to register with sysmon (%d)\n", error); sysmon_envsys_destroy(sme); } } /* Find the temperature of the CPU. */ void cpu_tau_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) { int i, threshold, count; threshold = 64; /* Half of the 7-bit sensor range */ /* Successive-approximation code adapted from Motorola * application note AN1800/D, "Programming the Thermal Assist * Unit in the MPC750 Microprocessor". */ for (i = 5; i >= 0 ; i--) { mtspr(SPR_THRM1, SPR_THRM_THRESHOLD(threshold) | SPR_THRM_VALID); count = 0; while ((count < 100000) && ((mfspr(SPR_THRM1) & SPR_THRM_TIV) == 0)) { count++; delay(1); } if (mfspr(SPR_THRM1) & SPR_THRM_TIN) { /* The interrupt bit was set, meaning the * temperature was above the threshold */ threshold += 1 << i; } else { /* Temperature was below the threshold */ threshold -= 1 << i; } } threshold += 2; /* Convert the temperature in degrees C to microkelvin */ edata->value_cur = (threshold * 1000000) + 273150000; edata->state = ENVSYS_SVALID; } #endif /* NSYSMON_ENVSYS > 0 */ #ifdef MULTIPROCESSOR volatile u_int cpu_spinstart_ack, cpu_spinstart_cpunum; int cpu_spinup(device_t self, struct cpu_info *ci) { volatile struct cpu_hatch_data hatch_data, *h = &hatch_data; struct pglist mlist; int i, error; char *hp; KASSERT(ci != curcpu()); /* Now allocate a hatch stack */ error = uvm_pglistalloc(HATCH_STACK_SIZE, 0x10000, 0x10000000, 16, 0, &mlist, 1, 1); if (error) { aprint_error(": unable to allocate hatch stack\n"); return -1; } hp = (void *)VM_PAGE_TO_PHYS(TAILQ_FIRST(&mlist)); memset(hp, 0, HATCH_STACK_SIZE); /* Initialize secondary cpu's initial lwp to its idlelwp. */ ci->ci_curlwp = ci->ci_data.cpu_idlelwp; ci->ci_curpcb = lwp_getpcb(ci->ci_curlwp); ci->ci_curpm = ci->ci_curpcb->pcb_pm; cpu_hatch_data = h; h->hatch_running = 0; h->hatch_self = self; h->hatch_ci = ci; h->hatch_pir = ci->ci_cpuid; cpu_hatch_stack = (uint32_t)hp + HATCH_STACK_SIZE - CALLFRAMELEN; ci->ci_lasttb = cpu_info[0].ci_lasttb; /* copy special registers */ h->hatch_hid0 = mfspr(SPR_HID0); #if defined(PPC_OEA64_BRIDGE) || defined (_ARCH_PPC64) h->hatch_hid1 = mfspr(SPR_HID1); h->hatch_hid4 = mfspr(SPR_HID4); h->hatch_hid5 = mfspr(SPR_HID5); #endif __asm volatile ("mfsdr1 %0" : "=r"(h->hatch_sdr1)); for (i = 0; i < 16; i++) { __asm ("mfsrin %0,%1" : "=r"(h->hatch_sr[i]) : "r"(i << ADDR_SR_SHFT)); } if (oeacpufeat & OEACPU_64) h->hatch_asr = mfspr(SPR_ASR); else h->hatch_asr = 0; if ((oeacpufeat & OEACPU_NOBAT) == 0) { /* copy the bat regs */ __asm volatile ("mfibatu %0,0" : "=r"(h->hatch_ibatu[0])); __asm volatile ("mfibatl %0,0" : "=r"(h->hatch_ibatl[0])); __asm volatile ("mfibatu %0,1" : "=r"(h->hatch_ibatu[1])); __asm volatile ("mfibatl %0,1" : "=r"(h->hatch_ibatl[1])); __asm volatile ("mfibatu %0,2" : "=r"(h->hatch_ibatu[2])); __asm volatile ("mfibatl %0,2" : "=r"(h->hatch_ibatl[2])); __asm volatile ("mfibatu %0,3" : "=r"(h->hatch_ibatu[3])); __asm volatile ("mfibatl %0,3" : "=r"(h->hatch_ibatl[3])); __asm volatile ("mfdbatu %0,0" : "=r"(h->hatch_dbatu[0])); __asm volatile ("mfdbatl %0,0" : "=r"(h->hatch_dbatl[0])); __asm volatile ("mfdbatu %0,1" : "=r"(h->hatch_dbatu[1])); __asm volatile ("mfdbatl %0,1" : "=r"(h->hatch_dbatl[1])); __asm volatile ("mfdbatu %0,2" : "=r"(h->hatch_dbatu[2])); __asm volatile ("mfdbatl %0,2" : "=r"(h->hatch_dbatl[2])); __asm volatile ("mfdbatu %0,3" : "=r"(h->hatch_dbatu[3])); __asm volatile ("mfdbatl %0,3" : "=r"(h->hatch_dbatl[3])); __asm volatile ("sync; isync"); } if (md_setup_trampoline(h, ci) == -1) return -1; md_presync_timebase(h); md_start_timebase(h); /* wait for secondary printf */ delay(200000); #ifdef CACHE_PROTO_MEI __asm volatile ("dcbi 0,%0"::"r"(&h->hatch_running):"memory"); __asm volatile ("sync; isync"); __asm volatile ("dcbst 0,%0"::"r"(&h->hatch_running):"memory"); __asm volatile ("sync; isync"); #endif if (h->hatch_running < 1) { #ifdef CACHE_PROTO_MEI __asm volatile ("dcbi 0,%0"::"r"(&cpu_spinstart_ack):"memory"); __asm volatile ("sync; isync"); __asm volatile ("dcbst 0,%0"::"r"(&cpu_spinstart_ack):"memory"); __asm volatile ("sync; isync"); #endif aprint_error("%d:CPU %d didn't start %d\n", cpu_spinstart_ack, ci->ci_cpuid, cpu_spinstart_ack); Debugger(); return -1; } /* Register IPI Interrupt */ if (ipiops.ppc_establish_ipi) ipiops.ppc_establish_ipi(IST_LEVEL, IPL_HIGH, NULL); return 0; } static volatile int start_secondary_cpu; register_t cpu_hatch(void) { volatile struct cpu_hatch_data *h = cpu_hatch_data; struct cpu_info * const ci = h->hatch_ci; struct pcb *pcb; u_int msr; int i; /* Initialize timebase. */ __asm ("mttbl %0; mttbu %0; mttbl %0" :: "r"(0)); /* * Set PIR (Processor Identification Register). i.e. whoami * Note that PIR is read-only on some CPU versions, so we write to it * only if it has a different value than we need. */ msr = mfspr(SPR_PIR); if (msr != h->hatch_pir) mtspr(SPR_PIR, h->hatch_pir); __asm volatile ("mtsprg0 %0" :: "r"(ci)); curlwp = ci->ci_curlwp; cpu_spinstart_ack = 0; if ((oeacpufeat & OEACPU_NOBAT) == 0) { /* Initialize MMU. */ __asm ("mtibatu 0,%0" :: "r"(h->hatch_ibatu[0])); __asm ("mtibatl 0,%0" :: "r"(h->hatch_ibatl[0])); __asm ("mtibatu 1,%0" :: "r"(h->hatch_ibatu[1])); __asm ("mtibatl 1,%0" :: "r"(h->hatch_ibatl[1])); __asm ("mtibatu 2,%0" :: "r"(h->hatch_ibatu[2])); __asm ("mtibatl 2,%0" :: "r"(h->hatch_ibatl[2])); __asm ("mtibatu 3,%0" :: "r"(h->hatch_ibatu[3])); __asm ("mtibatl 3,%0" :: "r"(h->hatch_ibatl[3])); __asm ("mtdbatu 0,%0" :: "r"(h->hatch_dbatu[0])); __asm ("mtdbatl 0,%0" :: "r"(h->hatch_dbatl[0])); __asm ("mtdbatu 1,%0" :: "r"(h->hatch_dbatu[1])); __asm ("mtdbatl 1,%0" :: "r"(h->hatch_dbatl[1])); __asm ("mtdbatu 2,%0" :: "r"(h->hatch_dbatu[2])); __asm ("mtdbatl 2,%0" :: "r"(h->hatch_dbatl[2])); __asm ("mtdbatu 3,%0" :: "r"(h->hatch_dbatu[3])); __asm ("mtdbatl 3,%0" :: "r"(h->hatch_dbatl[3])); } #ifdef PPC_OEA64_BRIDGE if ((oeacpufeat & OEACPU_64_BRIDGE) != 0) { mtspr64(SPR_HID0, h->hatch_hid0); mtspr64(SPR_HID1, h->hatch_hid1); mtspr64(SPR_HID4, h->hatch_hid4); mtspr64(SPR_HID5, h->hatch_hid5); mtspr64(SPR_HIOR, 0); } else #endif mtspr(SPR_HID0, h->hatch_hid0); if ((oeacpufeat & OEACPU_NOBAT) == 0) { __asm ("mtibatl 0,%0; mtibatu 0,%1; mtdbatl 0,%0; mtdbatu 0,%1;" :: "r"(battable[0].batl), "r"(battable[0].batu)); } __asm volatile ("sync"); for (i = 0; i < 16; i++) __asm ("mtsrin %0,%1" :: "r"(h->hatch_sr[i]), "r"(i << ADDR_SR_SHFT)); __asm volatile ("sync; isync"); if (oeacpufeat & OEACPU_64) mtspr(SPR_ASR, h->hatch_asr); cpu_spinstart_ack = 1; __asm ("ptesync"); __asm ("mtsdr1 %0" :: "r"(h->hatch_sdr1)); __asm volatile ("sync; isync"); cpu_spinstart_ack = 5; for (i = 0; i < 16; i++) __asm ("mfsrin %0,%1" : "=r"(h->hatch_sr[i]) : "r"(i << ADDR_SR_SHFT)); /* Enable I/D address translations. */ msr = mfmsr(); msr |= PSL_IR|PSL_DR|PSL_ME|PSL_RI; mtmsr(msr); __asm volatile ("sync; isync"); cpu_spinstart_ack = 2; md_sync_timebase(h); cpu_setup(h->hatch_self, ci); h->hatch_running = 1; __asm volatile ("sync; isync"); while (start_secondary_cpu == 0) ; __asm volatile ("sync; isync"); aprint_normal("cpu%d started\n", curcpu()->ci_index); __asm volatile ("mtdec %0" :: "r"(ticks_per_intr)); md_setup_interrupts(); ci->ci_ipending = 0; ci->ci_cpl = 0; mtmsr(mfmsr() | PSL_EE); pcb = lwp_getpcb(ci->ci_data.cpu_idlelwp); return pcb->pcb_sp; } void cpu_boot_secondary_processors(void) { start_secondary_cpu = 1; __asm volatile ("sync"); } #endif /*MULTIPROCESSOR*/