diff options
Diffstat (limited to 'plat/mediatek/mt8173/drivers/spm/spm.c')
| -rw-r--r-- | plat/mediatek/mt8173/drivers/spm/spm.c | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/plat/mediatek/mt8173/drivers/spm/spm.c b/plat/mediatek/mt8173/drivers/spm/spm.c new file mode 100644 index 00000000..eb40072b --- /dev/null +++ b/plat/mediatek/mt8173/drivers/spm/spm.c @@ -0,0 +1,368 @@ +/* + * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ +#include <bakery_lock.h> +#include <debug.h> +#include <mmio.h> +#include <mt8173_def.h> +#include <spm.h> +#include <spm_suspend.h> + +/* + * System Power Manager (SPM) is a hardware module, which controls cpu or + * system power for different power scenarios using different firmware, i.e., + * - spm_hotplug.c for cpu power control in cpu hotplug flow. + * - spm_mcdi.c for cpu power control in cpu idle power saving state. + * - spm_suspend.c for system power control in system suspend scenario. + * + * This file provide utility functions common to hotplug, mcdi(idle), suspend + * power scenarios. A bakery lock (software lock) is incoporated to protect + * certain critical sections to avoid kicking different SPM firmware + * concurrently. + */ + +#define SPM_SYSCLK_SETTLE 128 /* 3.9ms */ + +DEFINE_BAKERY_LOCK(spm_lock); + +static int spm_hotplug_ready __section("tzfw_coherent_mem"); +static int spm_mcdi_ready __section("tzfw_coherent_mem"); +static int spm_suspend_ready __section("tzfw_coherent_mem"); + +void spm_lock_init(void) +{ + bakery_lock_init(&spm_lock); +} + +void spm_lock_get(void) +{ + bakery_lock_get(&spm_lock); +} + +void spm_lock_release(void) +{ + bakery_lock_release(&spm_lock); +} + +int is_mcdi_ready(void) +{ + return spm_mcdi_ready; +} + +int is_hotplug_ready(void) +{ + return spm_hotplug_ready; +} + +int is_suspend_ready(void) +{ + return spm_suspend_ready; +} + +void set_mcdi_ready(void) +{ + spm_mcdi_ready = 1; + spm_hotplug_ready = 0; + spm_suspend_ready = 0; +} + +void set_hotplug_ready(void) +{ + spm_mcdi_ready = 0; + spm_hotplug_ready = 1; + spm_suspend_ready = 0; +} + +void set_suspend_ready(void) +{ + spm_mcdi_ready = 0; + spm_hotplug_ready = 0; + spm_suspend_ready = 1; +} + +void clear_all_ready(void) +{ + spm_mcdi_ready = 0; + spm_hotplug_ready = 0; + spm_suspend_ready = 0; +} + +void spm_register_init(void) +{ + mmio_write_32(SPM_POWERON_CONFIG_SET, SPM_REGWR_CFG_KEY | SPM_REGWR_EN); + + mmio_write_32(SPM_POWER_ON_VAL0, 0); + mmio_write_32(SPM_POWER_ON_VAL1, POWER_ON_VAL1_DEF); + mmio_write_32(SPM_PCM_PWR_IO_EN, 0); + + mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_PCM_SW_RESET); + mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY); + if (mmio_read_32(SPM_PCM_FSM_STA) != PCM_FSM_STA_DEF) + WARN("PCM reset failed\n"); + + mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_IM_SLEEP_DVS); + mmio_write_32(SPM_PCM_CON1, CON1_CFG_KEY | CON1_EVENT_LOCK_EN | + CON1_SPM_SRAM_ISO_B | CON1_SPM_SRAM_SLP_B | CON1_MIF_APBEN); + mmio_write_32(SPM_PCM_IM_PTR, 0); + mmio_write_32(SPM_PCM_IM_LEN, 0); + + mmio_write_32(SPM_CLK_CON, CC_SYSCLK0_EN_1 | CC_SYSCLK0_EN_0 | + CC_SYSCLK1_EN_0 | CC_SRCLKENA_MASK_0 | CC_CLKSQ1_SEL | + CC_CXO32K_RM_EN_MD2 | CC_CXO32K_RM_EN_MD1 | CC_MD32_DCM_EN); + + mmio_write_32(SPM_SLEEP_ISR_MASK, 0xff0c); + mmio_write_32(SPM_SLEEP_ISR_STATUS, 0xc); + mmio_write_32(SPM_PCM_SW_INT_CLEAR, 0xff); + mmio_write_32(SPM_MD32_SRAM_CON, 0xff0); +} + +void spm_reset_and_init_pcm(void) +{ + unsigned int con1; + int i = 0; + + mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_PCM_SW_RESET); + mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY); + while (mmio_read_32(SPM_PCM_FSM_STA) != PCM_FSM_STA_DEF) { + i++; + if (i > 1000) { + i = 0; + WARN("PCM reset failed\n"); + break; + } + } + + mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_IM_SLEEP_DVS); + + con1 = mmio_read_32(SPM_PCM_CON1) & + (CON1_PCM_WDT_WAKE_MODE | CON1_PCM_WDT_EN); + mmio_write_32(SPM_PCM_CON1, con1 | CON1_CFG_KEY | CON1_EVENT_LOCK_EN | + CON1_SPM_SRAM_ISO_B | CON1_SPM_SRAM_SLP_B | + CON1_IM_NONRP_EN | CON1_MIF_APBEN); +} + +void spm_init_pcm_register(void) +{ + mmio_write_32(SPM_PCM_REG_DATA_INI, mmio_read_32(SPM_POWER_ON_VAL0)); + mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R0); + mmio_write_32(SPM_PCM_PWR_IO_EN, 0); + + mmio_write_32(SPM_PCM_REG_DATA_INI, mmio_read_32(SPM_POWER_ON_VAL1)); + mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R7); + mmio_write_32(SPM_PCM_PWR_IO_EN, 0); +} + +void spm_set_power_control(const struct pwr_ctrl *pwrctrl) +{ + mmio_write_32(SPM_AP_STANBY_CON, (!pwrctrl->md32_req_mask << 21) | + (!pwrctrl->mfg_req_mask << 17) | + (!pwrctrl->disp_req_mask << 16) | + (!!pwrctrl->mcusys_idle_mask << 7) | + (!!pwrctrl->ca15top_idle_mask << 6) | + (!!pwrctrl->ca7top_idle_mask << 5) | + (!!pwrctrl->wfi_op << 4)); + mmio_write_32(SPM_PCM_SRC_REQ, (!!pwrctrl->pcm_apsrc_req << 0)); + mmio_write_32(SPM_PCM_PASR_DPD_2, 0); + + mmio_clrsetbits_32(SPM_CLK_CON, CC_SRCLKENA_MASK_0, + (pwrctrl->srclkenai_mask ? CC_SRCLKENA_MASK_0 : 0)); + + mmio_write_32(SPM_SLEEP_CA15_WFI0_EN, !!pwrctrl->ca15_wfi0_en); + mmio_write_32(SPM_SLEEP_CA15_WFI1_EN, !!pwrctrl->ca15_wfi1_en); + mmio_write_32(SPM_SLEEP_CA15_WFI2_EN, !!pwrctrl->ca15_wfi2_en); + mmio_write_32(SPM_SLEEP_CA15_WFI3_EN, !!pwrctrl->ca15_wfi3_en); + mmio_write_32(SPM_SLEEP_CA7_WFI0_EN, !!pwrctrl->ca7_wfi0_en); + mmio_write_32(SPM_SLEEP_CA7_WFI1_EN, !!pwrctrl->ca7_wfi1_en); + mmio_write_32(SPM_SLEEP_CA7_WFI2_EN, !!pwrctrl->ca7_wfi2_en); + mmio_write_32(SPM_SLEEP_CA7_WFI3_EN, !!pwrctrl->ca7_wfi3_en); +} + +void spm_set_wakeup_event(const struct pwr_ctrl *pwrctrl) +{ + unsigned int val, mask; + + if (pwrctrl->timer_val_cust == 0) + val = pwrctrl->timer_val ? pwrctrl->timer_val : PCM_TIMER_MAX; + else + val = pwrctrl->timer_val_cust; + + mmio_write_32(SPM_PCM_TIMER_VAL, val); + mmio_setbits_32(SPM_PCM_CON1, CON1_CFG_KEY); + + if (pwrctrl->wake_src_cust == 0) + mask = pwrctrl->wake_src; + else + mask = pwrctrl->wake_src_cust; + + if (pwrctrl->syspwreq_mask) + mask &= ~WAKE_SRC_SYSPWREQ; + + mmio_write_32(SPM_SLEEP_WAKEUP_EVENT_MASK, ~mask); + mmio_write_32(SPM_SLEEP_ISR_MASK, 0xfe04); +} + +void spm_get_wakeup_status(struct wake_status *wakesta) +{ + wakesta->assert_pc = mmio_read_32(SPM_PCM_REG_DATA_INI); + wakesta->r12 = mmio_read_32(SPM_PCM_REG12_DATA); + wakesta->raw_sta = mmio_read_32(SPM_SLEEP_ISR_RAW_STA); + wakesta->wake_misc = mmio_read_32(SPM_SLEEP_WAKEUP_MISC); + wakesta->timer_out = mmio_read_32(SPM_PCM_TIMER_OUT); + wakesta->r13 = mmio_read_32(SPM_PCM_REG13_DATA); + wakesta->idle_sta = mmio_read_32(SPM_SLEEP_SUBSYS_IDLE_STA); + wakesta->debug_flag = mmio_read_32(SPM_PCM_PASR_DPD_3); + wakesta->event_reg = mmio_read_32(SPM_PCM_EVENT_REG_STA); + wakesta->isr = mmio_read_32(SPM_SLEEP_ISR_STATUS); +} + +void spm_init_event_vector(const struct pcm_desc *pcmdesc) +{ + /* init event vector register */ + mmio_write_32(SPM_PCM_EVENT_VECTOR0, pcmdesc->vec0); + mmio_write_32(SPM_PCM_EVENT_VECTOR1, pcmdesc->vec1); + mmio_write_32(SPM_PCM_EVENT_VECTOR2, pcmdesc->vec2); + mmio_write_32(SPM_PCM_EVENT_VECTOR3, pcmdesc->vec3); + mmio_write_32(SPM_PCM_EVENT_VECTOR4, pcmdesc->vec4); + mmio_write_32(SPM_PCM_EVENT_VECTOR5, pcmdesc->vec5); + mmio_write_32(SPM_PCM_EVENT_VECTOR6, pcmdesc->vec6); + mmio_write_32(SPM_PCM_EVENT_VECTOR7, pcmdesc->vec7); + + /* event vector will be enabled by PCM itself */ +} + +void spm_kick_im_to_fetch(const struct pcm_desc *pcmdesc) +{ + unsigned int ptr = 0, len, con0; + + ptr = (unsigned int)(unsigned long)(pcmdesc->base); + len = pcmdesc->size - 1; + if (mmio_read_32(SPM_PCM_IM_PTR) != ptr || + mmio_read_32(SPM_PCM_IM_LEN) != len || + pcmdesc->sess > 2) { + mmio_write_32(SPM_PCM_IM_PTR, ptr); + mmio_write_32(SPM_PCM_IM_LEN, len); + } else { + mmio_setbits_32(SPM_PCM_CON1, CON1_CFG_KEY | CON1_IM_SLAVE); + } + + /* kick IM to fetch (only toggle IM_KICK) */ + con0 = mmio_read_32(SPM_PCM_CON0) & ~(CON0_IM_KICK | CON0_PCM_KICK); + mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY | CON0_IM_KICK); + mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY); + + /* kick IM to fetch (only toggle PCM_KICK) */ + con0 = mmio_read_32(SPM_PCM_CON0) & ~(CON0_IM_KICK | CON0_PCM_KICK); + mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY | CON0_PCM_KICK); + mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY); +} + +void spm_set_sysclk_settle(void) +{ + mmio_write_32(SPM_CLK_SETTLE, SPM_SYSCLK_SETTLE); + + INFO("settle = %u\n", mmio_read_32(SPM_CLK_SETTLE)); +} + +void spm_kick_pcm_to_run(struct pwr_ctrl *pwrctrl) +{ + unsigned int con1; + + con1 = mmio_read_32(SPM_PCM_CON1) & + ~(CON1_PCM_WDT_WAKE_MODE | CON1_PCM_WDT_EN); + + mmio_write_32(SPM_PCM_CON1, CON1_CFG_KEY | con1); + + if (mmio_read_32(SPM_PCM_TIMER_VAL) > PCM_TIMER_MAX) + mmio_write_32(SPM_PCM_TIMER_VAL, PCM_TIMER_MAX); + + mmio_write_32(SPM_PCM_WDT_TIMER_VAL, + mmio_read_32(SPM_PCM_TIMER_VAL) + PCM_WDT_TIMEOUT); + + mmio_write_32(SPM_PCM_CON1, con1 | CON1_CFG_KEY | CON1_PCM_WDT_EN); + mmio_write_32(SPM_PCM_PASR_DPD_0, 0); + + mmio_write_32(SPM_PCM_MAS_PAUSE_MASK, 0xffffffff); + mmio_write_32(SPM_PCM_REG_DATA_INI, 0); + mmio_clrbits_32(SPM_CLK_CON, CC_DISABLE_DORM_PWR); + + mmio_write_32(SPM_PCM_FLAGS, pwrctrl->pcm_flags); + + mmio_clrsetbits_32(SPM_CLK_CON, CC_LOCK_INFRA_DCM, + (pwrctrl->infra_dcm_lock ? CC_LOCK_INFRA_DCM : 0)); + + mmio_write_32(SPM_PCM_PWR_IO_EN, + (pwrctrl->r0_ctrl_en ? PCM_PWRIO_EN_R0 : 0) | + (pwrctrl->r7_ctrl_en ? PCM_PWRIO_EN_R7 : 0)); +} + +void spm_clean_after_wakeup(void) +{ + mmio_clrsetbits_32(SPM_PCM_CON1, CON1_PCM_WDT_EN, CON1_CFG_KEY); + + mmio_write_32(SPM_PCM_PWR_IO_EN, 0); + mmio_write_32(SPM_SLEEP_CPU_WAKEUP_EVENT, 0); + mmio_clrsetbits_32(SPM_PCM_CON1, CON1_PCM_TIMER_EN, CON1_CFG_KEY); + + mmio_write_32(SPM_SLEEP_WAKEUP_EVENT_MASK, ~0); + mmio_write_32(SPM_SLEEP_ISR_MASK, 0xFF0C); + mmio_write_32(SPM_SLEEP_ISR_STATUS, 0xC); + mmio_write_32(SPM_PCM_SW_INT_CLEAR, 0xFF); +} + +enum wake_reason_t spm_output_wake_reason(struct wake_status *wakesta) +{ + enum wake_reason_t wr; + int i; + + wr = WR_UNKNOWN; + + if (wakesta->assert_pc != 0) { + ERROR("PCM ASSERT AT %u, r12=0x%x, r13=0x%x, debug_flag=0x%x\n", + wakesta->assert_pc, wakesta->r12, wakesta->r13, + wakesta->debug_flag); + return WR_PCM_ASSERT; + } + + if (wakesta->r12 & WAKE_SRC_SPM_MERGE) { + if (wakesta->wake_misc & WAKE_MISC_PCM_TIMER) + wr = WR_PCM_TIMER; + if (wakesta->wake_misc & WAKE_MISC_CPU_WAKE) + wr = WR_WAKE_SRC; + } + + for (i = 1; i < 32; i++) { + if (wakesta->r12 & (1U << i)) + wr = WR_WAKE_SRC; + } + + if ((wakesta->event_reg & 0x100000) == 0) { + INFO("pcm sleep abort!\n"); + wr = WR_PCM_ABORT; + } + + INFO("timer_out = %u, r12 = 0x%x, r13 = 0x%x, debug_flag = 0x%x\n", + wakesta->timer_out, wakesta->r12, wakesta->r13, + wakesta->debug_flag); + + INFO("raw_sta = 0x%x, idle_sta = 0x%x, event_reg = 0x%x, isr = 0x%x\n", + wakesta->raw_sta, wakesta->idle_sta, wakesta->event_reg, + wakesta->isr); + + return wr; +} + +void spm_boot_init(void) +{ + /* set spm transaction to secure mode */ + mmio_write_32(DEVAPC0_APC_CON, 0x0); + mmio_write_32(DEVAPC0_MAS_SEC_0, 0x200); + + /* Only CPU0 is online during boot, initialize cpu online reserve bit */ + mmio_write_32(SPM_PCM_RESERVE, 0xFE); + mmio_clrbits_32(AP_PLL_CON3, 0xFFFFF); + mmio_clrbits_32(AP_PLL_CON4, 0xF); + spm_lock_init(); + spm_register_init(); +} |