/* * Copyright (c) 2013, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 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. * * Neither the name of ARM nor the names of its contributors may be used * to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 #include #include #include #include #include #include #include /* * TODO: Someday there will be a generic power controller api. At the moment * each platform has its own pwrc so just exporting functions is fine. */ static bakery_lock pwrc_lock __attribute__ ((section("tzfw_coherent_mem"))); unsigned int fvp_pwrc_get_cpu_wkr(unsigned long mpidr) { unsigned int rc = 0; bakery_lock_get(mpidr, &pwrc_lock); mmio_write_32(PWRC_BASE + PSYSR_OFF, (unsigned int) mpidr); rc = PSYSR_WK(mmio_read_32(PWRC_BASE + PSYSR_OFF)); bakery_lock_release(mpidr, &pwrc_lock); return rc; } unsigned int fvp_pwrc_read_psysr(unsigned long mpidr) { unsigned int rc = 0; bakery_lock_get(mpidr, &pwrc_lock); mmio_write_32(PWRC_BASE + PSYSR_OFF, (unsigned int) mpidr); rc = mmio_read_32(PWRC_BASE + PSYSR_OFF); bakery_lock_release(mpidr, &pwrc_lock); return rc; } void fvp_pwrc_write_pponr(unsigned long mpidr) { bakery_lock_get(mpidr, &pwrc_lock); mmio_write_32(PWRC_BASE + PPONR_OFF, (unsigned int) mpidr); bakery_lock_release(mpidr, &pwrc_lock); } void fvp_pwrc_write_ppoffr(unsigned long mpidr) { bakery_lock_get(mpidr, &pwrc_lock); mmio_write_32(PWRC_BASE + PPOFFR_OFF, (unsigned int) mpidr); bakery_lock_release(mpidr, &pwrc_lock); } void fvp_pwrc_set_wen(unsigned long mpidr) { bakery_lock_get(mpidr, &pwrc_lock); mmio_write_32(PWRC_BASE + PWKUPR_OFF, (unsigned int) (PWKUPR_WEN | mpidr)); bakery_lock_release(mpidr, &pwrc_lock); } void fvp_pwrc_clr_wen(unsigned long mpidr) { bakery_lock_get(mpidr, &pwrc_lock); mmio_write_32(PWRC_BASE + PWKUPR_OFF, (unsigned int) mpidr); bakery_lock_release(mpidr, &pwrc_lock); } void fvp_pwrc_write_pcoffr(unsigned long mpidr) { bakery_lock_get(mpidr, &pwrc_lock); mmio_write_32(PWRC_BASE + PCOFFR_OFF, (unsigned int) mpidr); bakery_lock_release(mpidr, &pwrc_lock); } /* Nothing else to do here apart from initializing the lock */ int fvp_pwrc_setup(void) { bakery_lock_init(&pwrc_lock); return 0; }