| /* |
| * Copyright (c) 2016, 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 <stdint.h> |
| #include <arch_helpers.h> |
| #include <mmio.h> |
| #include <mt_cpuxgpt.h> |
| #include <stdint.h> |
| #include <platform.h> |
| #include <debug.h> |
| #define CPUXGPT_BASE 0x10200000 |
| #define INDEX_BASE (CPUXGPT_BASE+0x0674) |
| #define CTL_BASE (CPUXGPT_BASE+0x0670) |
| |
| uint64_t normal_time_base; |
| uint64_t atf_time_base; |
| |
| void sched_clock_init(uint64_t normal_base, uint64_t atf_base) |
| { |
| normal_time_base = normal_base; |
| atf_time_base = atf_base; |
| } |
| |
| uint64_t sched_clock(void) |
| { |
| uint64_t cval; |
| |
| cval = (((read_cntpct_el0() - atf_time_base)*1000)/ |
| SYS_COUNTER_FREQ_IN_MHZ) + normal_time_base; |
| return cval; |
| } |
| |
| /* |
| * Return: 0 - Trying to disable the CPUXGPT control bit, |
| * and not allowed to disable it. |
| * Return: 1 - reg_addr is not realted to disable the control bit. |
| */ |
| unsigned char check_cpuxgpt_write_permission(unsigned int reg_addr, |
| unsigned int reg_value) |
| { |
| unsigned int idx; |
| unsigned int ctl_val; |
| |
| if (reg_addr == CTL_BASE) { |
| idx = mmio_read_32(INDEX_BASE); |
| |
| /* idx 0: CPUXGPT system control */ |
| if (idx == 0) { |
| ctl_val = mmio_read_32(CTL_BASE); |
| if (ctl_val & 1) { |
| /* |
| * if enable bit already set, |
| * then bit 0 is not allow to set as 0 |
| */ |
| if (!(reg_value & 1)) |
| return 0; |
| } |
| } |
| } |
| return 1; |
| } |
| |