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/*
* 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.
*
* 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 <arch_helpers.h>
#include <assert.h>
#include <debug.h>
#include <delay_timer.h>
#include <errno.h>
#include <mmio.h>
#include <platform.h>
#include <platform_def.h>
#include <plat_private.h>
#include <rk3368_def.h>
#include <pmu_sram.h>
#include <soc.h>
#include <pmu.h>
#include <ddr_rk3368.h>
#include <pmu_com.h>
static struct psram_data_t *psram_sleep_cfg =
(struct psram_data_t *)PSRAM_DT_BASE;
void rk3368_flash_l2_b(void)
{
uint32_t wait_cnt = 0;
regs_updata_bit_set(PMU_BASE + PMU_SFT_CON, pmu_sft_l2flsh_clst_b);
dsb();
while (!(mmio_read_32(PMU_BASE + PMU_CORE_PWR_ST)
& BIT(clst_b_l2_flsh_done))) {
wait_cnt++;
if (!(wait_cnt % MAX_WAIT_CONUT))
WARN("%s:reg %x,wait\n", __func__,
mmio_read_32(PMU_BASE + PMU_CORE_PWR_ST));
}
regs_updata_bit_clr(PMU_BASE + PMU_SFT_CON, pmu_sft_l2flsh_clst_b);
}
static inline int rk3368_pmu_bus_idle(uint32_t req, uint32_t idle)
{
uint32_t mask = BIT(req);
uint32_t idle_mask = 0;
uint32_t idle_target = 0;
uint32_t val;
uint32_t wait_cnt = 0;
switch (req) {
case bus_ide_req_clst_l:
idle_mask = BIT(pmu_idle_ack_cluster_l);
idle_target = (idle << pmu_idle_ack_cluster_l);
break;
case bus_ide_req_clst_b:
idle_mask = BIT(pmu_idle_ack_cluster_b);
idle_target = (idle << pmu_idle_ack_cluster_b);
break;
case bus_ide_req_cxcs:
idle_mask = BIT(pmu_idle_ack_cxcs);
idle_target = ((!idle) << pmu_idle_ack_cxcs);
break;
case bus_ide_req_cci400:
idle_mask = BIT(pmu_idle_ack_cci400);
idle_target = ((!idle) << pmu_idle_ack_cci400);
break;
case bus_ide_req_gpu:
idle_mask = BIT(pmu_idle_ack_gpu) | BIT(pmu_idle_gpu);
idle_target = (idle << pmu_idle_ack_gpu) |
(idle << pmu_idle_gpu);
break;
case bus_ide_req_core:
idle_mask = BIT(pmu_idle_ack_core) | BIT(pmu_idle_core);
idle_target = (idle << pmu_idle_ack_core) |
(idle << pmu_idle_core);
break;
case bus_ide_req_bus:
idle_mask = BIT(pmu_idle_ack_bus) | BIT(pmu_idle_bus);
idle_target = (idle << pmu_idle_ack_bus) |
(idle << pmu_idle_bus);
break;
case bus_ide_req_dma:
idle_mask = BIT(pmu_idle_ack_dma) | BIT(pmu_idle_dma);
idle_target = (idle << pmu_idle_ack_dma) |
(idle << pmu_idle_dma);
break;
case bus_ide_req_peri:
idle_mask = BIT(pmu_idle_ack_peri) | BIT(pmu_idle_peri);
idle_target = (idle << pmu_idle_ack_peri) |
(idle << pmu_idle_peri);
break;
case bus_ide_req_video:
idle_mask = BIT(pmu_idle_ack_video) | BIT(pmu_idle_video);
idle_target = (idle << pmu_idle_ack_video) |
(idle << pmu_idle_video);
break;
case bus_ide_req_vio:
idle_mask = BIT(pmu_idle_ack_vio) | BIT(pmu_idle_vio);
idle_target = (pmu_idle_ack_vio) |
(idle << pmu_idle_vio);
break;
case bus_ide_req_alive:
idle_mask = BIT(pmu_idle_ack_alive) | BIT(pmu_idle_alive);
idle_target = (idle << pmu_idle_ack_alive) |
(idle << pmu_idle_alive);
break;
case bus_ide_req_pmu:
idle_mask = BIT(pmu_idle_ack_pmu) | BIT(pmu_idle_pmu);
idle_target = (idle << pmu_idle_ack_pmu) |
(idle << pmu_idle_pmu);
break;
case bus_ide_req_msch:
idle_mask = BIT(pmu_idle_ack_msch) | BIT(pmu_idle_msch);
idle_target = (idle << pmu_idle_ack_msch) |
(idle << pmu_idle_msch);
break;
case bus_ide_req_cci:
idle_mask = BIT(pmu_idle_ack_cci) | BIT(pmu_idle_cci);
idle_target = (idle << pmu_idle_ack_cci) |
(idle << pmu_idle_cci);
break;
default:
ERROR("%s: Unsupported the idle request\n", __func__);
break;
}
val = mmio_read_32(PMU_BASE + PMU_BUS_IDE_REQ);
if (idle)
val |= mask;
else
val &= ~mask;
mmio_write_32(PMU_BASE + PMU_BUS_IDE_REQ, val);
while ((mmio_read_32(PMU_BASE +
PMU_BUS_IDE_ST) & idle_mask) != idle_target) {
wait_cnt++;
if (!(wait_cnt % MAX_WAIT_CONUT))
WARN("%s:st=%x(%x)\n", __func__,
mmio_read_32(PMU_BASE + PMU_BUS_IDE_ST),
idle_mask);
}
return 0;
}
void pmu_scu_b_pwrup(void)
{
regs_updata_bit_clr(PMU_BASE + PMU_SFT_CON, pmu_sft_acinactm_clst_b);
rk3368_pmu_bus_idle(bus_ide_req_clst_b, 0);
}
static void pmu_scu_b_pwrdn(void)
{
uint32_t wait_cnt = 0;
if ((mmio_read_32(PMU_BASE + PMU_PWRDN_ST) &
PM_PWRDM_CPUSB_MSK) != PM_PWRDM_CPUSB_MSK) {
ERROR("%s: not all cpus is off\n", __func__);
return;
}
rk3368_flash_l2_b();
regs_updata_bit_set(PMU_BASE + PMU_SFT_CON, pmu_sft_acinactm_clst_b);
while (!(mmio_read_32(PMU_BASE +
PMU_CORE_PWR_ST) & BIT(clst_b_l2_wfi))) {
wait_cnt++;
if (!(wait_cnt % MAX_WAIT_CONUT))
ERROR("%s:wait cluster-b l2(%x)\n", __func__,
mmio_read_32(PMU_BASE + PMU_CORE_PWR_ST));
}
rk3368_pmu_bus_idle(bus_ide_req_clst_b, 1);
}
static void pmu_sleep_mode_config(void)
{
uint32_t pwrmd_core, pwrmd_com;
pwrmd_core = BIT(pmu_mdcr_cpu0_pd) |
BIT(pmu_mdcr_scu_l_pd) |
BIT(pmu_mdcr_l2_flush) |
BIT(pmu_mdcr_l2_idle) |
BIT(pmu_mdcr_clr_clst_l) |
BIT(pmu_mdcr_clr_core) |
BIT(pmu_mdcr_clr_cci) |
BIT(pmu_mdcr_core_pd);
pwrmd_com = BIT(pmu_mode_en) |
BIT(pmu_mode_sref_enter) |
BIT(pmu_mode_pwr_off);
regs_updata_bit_set(PMU_BASE + PMU_WKUP_CFG2, pmu_cluster_l_wkup_en);
regs_updata_bit_set(PMU_BASE + PMU_WKUP_CFG2, pmu_cluster_b_wkup_en);
regs_updata_bit_clr(PMU_BASE + PMU_WKUP_CFG2, pmu_gpio_wkup_en);
mmio_write_32(PMU_BASE + PMU_PLLLOCK_CNT, CYCL_24M_CNT_MS(2));
mmio_write_32(PMU_BASE + PMU_PLLRST_CNT, CYCL_24M_CNT_US(100));
mmio_write_32(PMU_BASE + PMU_STABLE_CNT, CYCL_24M_CNT_MS(2));
mmio_write_32(PMU_BASE + PMU_PWRMD_CORE, pwrmd_core);
mmio_write_32(PMU_BASE + PMU_PWRMD_COM, pwrmd_com);
dsb();
}
static void ddr_suspend_save(void)
{
ddr_reg_save(1, psram_sleep_cfg->ddr_data);
}
static void pmu_set_sleep_mode(void)
{
ddr_suspend_save();
pmu_sleep_mode_config();
soc_sleep_config();
regs_updata_bit_set(PMU_BASE + PMU_PWRMD_CORE, pmu_mdcr_global_int_dis);
regs_updata_bit_set(PMU_BASE + PMU_SFT_CON, pmu_sft_glbl_int_dis_b);
pmu_scu_b_pwrdn();
mmio_write_32(SGRF_BASE + SGRF_SOC_CON(1),
(PMUSRAM_BASE >> CPU_BOOT_ADDR_ALIGN) |
CPU_BOOT_ADDR_WMASK);
mmio_write_32(SGRF_BASE + SGRF_SOC_CON(2),
(PMUSRAM_BASE >> CPU_BOOT_ADDR_ALIGN) |
CPU_BOOT_ADDR_WMASK);
}
void plat_rockchip_pmusram_prepare(void)
{
uint32_t *sram_dst, *sram_src;
size_t sram_size = 2;
uint32_t code_size;
/* pmu sram code and data prepare */
sram_dst = (uint32_t *)PMUSRAM_BASE;
sram_src = (uint32_t *)&pmu_cpuson_entrypoint_start;
sram_size = (uint32_t *)&pmu_cpuson_entrypoint_end -
(uint32_t *)sram_src;
u32_align_cpy(sram_dst, sram_src, sram_size);
/* ddr code */
sram_dst += sram_size;
sram_src = ddr_get_resume_code_base();
code_size = ddr_get_resume_code_size();
u32_align_cpy(sram_dst, sram_src, code_size / 4);
psram_sleep_cfg->ddr_func = (uint64_t)sram_dst;
/* ddr data */
sram_dst += (code_size / 4);
psram_sleep_cfg->ddr_data = (uint64_t)sram_dst;
assert((uint64_t)(sram_dst + ddr_get_resume_data_size() / 4)
< PSRAM_SP_BOTTOM);
psram_sleep_cfg->sp = PSRAM_SP_TOP;
}
static int cpus_id_power_domain(uint32_t cluster,
uint32_t cpu,
uint32_t pd_state,
uint32_t wfie_msk)
{
uint32_t pd;
uint64_t mpidr;
if (cluster)
pd = PD_CPUB0 + cpu;
else
pd = PD_CPUL0 + cpu;
if (pmu_power_domain_st(pd) == pd_state)
return 0;
if (pd_state == pmu_pd_off) {
mpidr = (cluster << MPIDR_AFF1_SHIFT) | cpu;
if (check_cpu_wfie(mpidr, wfie_msk))
return -EINVAL;
}
return pmu_power_domain_ctr(pd, pd_state);
}
static void nonboot_cpus_off(void)
{
uint32_t boot_cpu, boot_cluster, cpu;
boot_cpu = MPIDR_AFFLVL0_VAL(read_mpidr_el1());
boot_cluster = MPIDR_AFFLVL1_VAL(read_mpidr_el1());
/* turn off noboot cpus */
for (cpu = 0; cpu < PLATFORM_CLUSTER0_CORE_COUNT; cpu++) {
if (!boot_cluster && (cpu == boot_cpu))
continue;
cpus_id_power_domain(0, cpu, pmu_pd_off, CKECK_WFEI_MSK);
}
for (cpu = 0; cpu < PLATFORM_CLUSTER1_CORE_COUNT; cpu++) {
if (boot_cluster && (cpu == boot_cpu))
continue;
cpus_id_power_domain(1, cpu, pmu_pd_off, CKECK_WFEI_MSK);
}
}
static int cores_pwr_domain_on(unsigned long mpidr, uint64_t entrypoint)
{
uint32_t cpu, cluster;
uint32_t cpuon_id;
cpu = MPIDR_AFFLVL0_VAL(mpidr);
cluster = MPIDR_AFFLVL1_VAL(mpidr);
/* Make sure the cpu is off,Before power up the cpu! */
cpus_id_power_domain(cluster, cpu, pmu_pd_off, CKECK_WFEI_MSK);
cpuon_id = (cluster * PLATFORM_CLUSTER0_CORE_COUNT) + cpu;
assert(cpuson_flags[cpuon_id] == 0);
cpuson_flags[cpuon_id] = PMU_CPU_HOTPLUG;
cpuson_entry_point[cpuon_id] = entrypoint;
/* Switch boot addr to pmusram */
mmio_write_32(SGRF_BASE + SGRF_SOC_CON(1 + cluster),
(PMUSRAM_BASE >> CPU_BOOT_ADDR_ALIGN) |
CPU_BOOT_ADDR_WMASK);
dsb();
cpus_id_power_domain(cluster, cpu, pmu_pd_on, CKECK_WFEI_MSK);
mmio_write_32(SGRF_BASE + SGRF_SOC_CON(1 + cluster),
(COLD_BOOT_BASE >> CPU_BOOT_ADDR_ALIGN) |
CPU_BOOT_ADDR_WMASK);
return 0;
}
static int cores_pwr_domain_on_finish(void)
{
uint32_t cpuon_id;
cpuon_id = plat_my_core_pos();
assert(cpuson_flags[cpuon_id] == 0);
cpuson_flags[cpuon_id] = 0x00;
return 0;
}
static int sys_pwr_domain_resume(void)
{
psram_sleep_cfg->sys_mode = PMU_SYS_ON_MODE;
pm_plls_resume();
pmu_scu_b_pwrup();
return 0;
}
static int sys_pwr_domain_suspend(void)
{
nonboot_cpus_off();
pmu_set_sleep_mode();
psram_sleep_cfg->sys_mode = PMU_SYS_SLP_MODE;
psram_sleep_cfg->ddr_flag = 0;
return 0;
}
static struct rockchip_pm_ops_cb pm_ops = {
.cores_pwr_dm_on = cores_pwr_domain_on,
.cores_pwr_dm_on_finish = cores_pwr_domain_on_finish,
.sys_pwr_dm_suspend = sys_pwr_domain_suspend,
.sys_pwr_dm_resume = sys_pwr_domain_resume,
.sys_gbl_soft_reset = soc_sys_global_soft_reset,
};
void plat_rockchip_pmu_init(void)
{
uint32_t cpu;
plat_setup_rockchip_pm_ops(&pm_ops);
for (cpu = 0; cpu < PLATFORM_CORE_COUNT; cpu++)
cpuson_flags[cpu] = 0;
psram_sleep_cfg->sys_mode = PMU_SYS_ON_MODE;
psram_sleep_cfg->boot_mpidr = read_mpidr_el1() & 0xffff;
nonboot_cpus_off();
INFO("%s(%d): pd status %x\n", __func__, __LINE__,
mmio_read_32(PMU_BASE + PMU_PWRDN_ST));
}