diff options
Diffstat (limited to 'roms/skiboot/core/chip.c')
| -rw-r--r-- | roms/skiboot/core/chip.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/roms/skiboot/core/chip.c b/roms/skiboot/core/chip.c new file mode 100644 index 000000000..2d95b2e05 --- /dev/null +++ b/roms/skiboot/core/chip.c @@ -0,0 +1,190 @@ +// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later +/* Copyright 2013-2019 IBM Corp. */ + +#include <skiboot.h> +#include <chip.h> +#include <console.h> +#include <device.h> +#include <timebase.h> +#include <cpu.h> + +static struct proc_chip *chips[MAX_CHIPS]; +enum proc_chip_quirks proc_chip_quirks; + +uint32_t pir_to_chip_id(uint32_t pir) +{ + if (proc_gen == proc_gen_p10) + return P10_PIR2GCID(pir); + else if (proc_gen == proc_gen_p9) + return P9_PIR2GCID(pir); + else if (proc_gen == proc_gen_p8) + return P8_PIR2GCID(pir); + else + assert(false); +} + +uint32_t pir_to_core_id(uint32_t pir) +{ + if (proc_gen == proc_gen_p10) { + if (this_cpu()->is_fused_core) + return P10_PIRFUSED2NORMALCOREID(pir); + else + return P10_PIR2COREID(pir); + } else if (proc_gen == proc_gen_p9) { + if (this_cpu()->is_fused_core) + return P9_PIRFUSED2NORMALCOREID(pir); + else + return P9_PIR2COREID(pir); + } else if (proc_gen == proc_gen_p8) { + return P8_PIR2COREID(pir); + } else { + assert(false); + } +} + +uint32_t pir_to_fused_core_id(uint32_t pir) +{ + if (proc_gen == proc_gen_p10) { + if (this_cpu()->is_fused_core) + return P10_PIR2FUSEDCOREID(pir); + else + return P10_PIR2COREID(pir); + } else if (proc_gen == proc_gen_p9) { + if (this_cpu()->is_fused_core) + return P9_PIR2FUSEDCOREID(pir); + else + return P9_PIR2COREID(pir); + } else if (proc_gen == proc_gen_p8) { + return P8_PIR2COREID(pir); + } else { + assert(false); + } +} + +uint32_t pir_to_thread_id(uint32_t pir) +{ + if (proc_gen == proc_gen_p10) { + if (this_cpu()->is_fused_core) + return P10_PIRFUSED2NORMALTHREADID(pir); + else + return P10_PIR2THREADID(pir); + } else if (proc_gen == proc_gen_p9) { + if (this_cpu()->is_fused_core) + return P9_PIRFUSED2NORMALTHREADID(pir); + else + return P9_PIR2THREADID(pir); + } else if (proc_gen == proc_gen_p8) { + return P8_PIR2THREADID(pir); + } else { + assert(false); + } +} + +struct proc_chip *next_chip(struct proc_chip *chip) +{ + unsigned int i; + + for (i = chip ? (chip->id + 1) : 0; i < MAX_CHIPS; i++) + if (chips[i]) + return chips[i]; + return NULL; +} + + +struct proc_chip *get_chip(uint32_t chip_id) +{ + if (chip_id >= MAX_CHIPS) + return NULL; + return chips[chip_id]; +} + +static void init_chip(struct dt_node *dn) +{ + struct proc_chip *chip; + uint32_t id; + const char *lc = NULL; + + id = dt_get_chip_id(dn); + assert(id < MAX_CHIPS); + assert(chips[id] == NULL); + + chip = zalloc(sizeof(struct proc_chip)); + assert(chip); + + chip->id = id; + chip->devnode = dn; + + chip->dbob_id = dt_prop_get_u32_def(dn, "ibm,dbob-id", 0xffffffff); + chip->pcid = dt_prop_get_u32_def(dn, "ibm,proc-chip-id", 0xffffffff); + + if (dt_prop_get_u32_def(dn, "ibm,occ-functional-state", 0)) + chip->occ_functional = true; + else + chip->occ_functional = false; + + list_head_init(&chip->i2cms); + + /* Update the location code for this chip. */ + if (dt_has_node_property(dn, "ibm,loc-code", NULL)) + lc = dt_prop_get(dn, "ibm,loc-code"); + else if (dt_has_node_property(dn, "ibm,slot-location-code", NULL)) + lc = dt_prop_get(dn, "ibm,slot-location-code"); + + if (lc) + chip->loc_code = strdup(lc); + + chip->primary_topology = dt_prop_get_u32_def(dn, + "ibm,primary-topology-index", 0xffffffff); + + prlog(PR_INFO, "CHIP: Initialised chip %d from %s\n", id, dn->name); + chips[id] = chip; +} + +void init_chips(void) +{ + struct dt_node *xn; + + /* Detect mambo chip */ + if (dt_find_by_path(dt_root, "/mambo")) { + proc_chip_quirks |= QUIRK_NO_CHIPTOD | QUIRK_MAMBO_CALLOUTS + | QUIRK_NO_F000F | QUIRK_NO_PBA | QUIRK_NO_OCC_IRQ + | QUIRK_NO_RNG; + + enable_mambo_console(); + + prlog(PR_NOTICE, "CHIP: Detected Mambo simulator\n"); + + dt_for_each_compatible(dt_root, xn, "ibm,mambo-chip") + init_chip(xn); + } + + /* Detect simics */ + if (dt_find_by_path(dt_root, "/simics")) { + proc_chip_quirks |= QUIRK_SIMICS + | QUIRK_NO_PBA | QUIRK_NO_OCC_IRQ | QUIRK_SLOW_SIM; + tb_hz = 512000; + prlog(PR_NOTICE, "CHIP: Detected Simics simulator\n"); + } + /* Detect Awan emulator */ + if (dt_find_by_path(dt_root, "/awan")) { + proc_chip_quirks |= QUIRK_NO_CHIPTOD | QUIRK_NO_F000F + | QUIRK_NO_PBA | QUIRK_NO_OCC_IRQ | QUIRK_SLOW_SIM; + tb_hz = 512000; + prlog(PR_NOTICE, "CHIP: Detected Awan emulator\n"); + } + /* Detect Qemu */ + if (dt_node_is_compatible(dt_root, "qemu,powernv") || + dt_node_is_compatible(dt_root, "qemu,powernv8") || + dt_node_is_compatible(dt_root, "qemu,powernv9") || + dt_node_is_compatible(dt_root, "qemu,powernv10") || + dt_find_by_path(dt_root, "/qemu")) { + proc_chip_quirks |= QUIRK_QEMU | QUIRK_NO_CHIPTOD + | QUIRK_NO_DIRECT_CTL | QUIRK_NO_RNG; + prlog(PR_NOTICE, "CHIP: Detected QEMU simulator\n"); + } + + /* We walk the chips based on xscom nodes in the tree */ + dt_for_each_compatible(dt_root, xn, "ibm,xscom") { + init_chip(xn); + } +} |