diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/renesas/common/pwrc/pwrc.c | 917 |
1 files changed, 917 insertions, 0 deletions
diff --git a/drivers/renesas/common/pwrc/pwrc.c b/drivers/renesas/common/pwrc/pwrc.c new file mode 100644 index 0000000..b60ccab --- /dev/null +++ b/drivers/renesas/common/pwrc/pwrc.c @@ -0,0 +1,917 @@ +/* + * Copyright (c) 2015-2021, Renesas Electronics Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <string.h> + +#include <arch.h> +#include <arch_helpers.h> +#include <common/debug.h> +#include <lib/bakery_lock.h> +#include <lib/mmio.h> +#include <lib/xlat_tables/xlat_tables_v2.h> +#include <plat/common/platform.h> + +#include "iic_dvfs.h" +#include "micro_delay.h" +#include "pwrc.h" +#include "rcar_def.h" +#include "rcar_private.h" +#include "cpg_registers.h" + +/* + * Someday there will be a generic power controller api. At the moment each + * platform has its own pwrc so just exporting functions should be acceptable. + */ +RCAR_INSTANTIATE_LOCK + +#define WUP_IRQ_SHIFT (0U) +#define WUP_FIQ_SHIFT (8U) +#define WUP_CSD_SHIFT (16U) +#define BIT_SOFTRESET (1U << 15) +#define BIT_CA53_SCU (1U << 21) +#define BIT_CA57_SCU (1U << 12) +#define REQ_RESUME (1U << 1) +#define REQ_OFF (1U << 0) +#define STATUS_PWRUP (1U << 4) +#define STATUS_PWRDOWN (1U << 0) +#define STATE_CA57_CPU (27U) +#define STATE_CA53_CPU (22U) +#define MODE_L2_DOWN (0x00000002U) +#define CPU_PWR_OFF (0x00000003U) +#define RCAR_PSTR_MASK (0x00000003U) +#define ST_ALL_STANDBY (0x00003333U) +#define SYSCEXTMASK_EXTMSK0 (0x00000001U) +/* Suspend to ram */ +#define DBSC4_REG_BASE (0xE6790000U) +#define DBSC4_REG_DBSYSCNT0 (DBSC4_REG_BASE + 0x0100U) +#define DBSC4_REG_DBACEN (DBSC4_REG_BASE + 0x0200U) +#define DBSC4_REG_DBCMD (DBSC4_REG_BASE + 0x0208U) +#define DBSC4_REG_DBRFEN (DBSC4_REG_BASE + 0x0204U) +#define DBSC4_REG_DBWAIT (DBSC4_REG_BASE + 0x0210U) +#define DBSC4_REG_DBCALCNF (DBSC4_REG_BASE + 0x0424U) +#define DBSC4_REG_DBDFIPMSTRCNF (DBSC4_REG_BASE + 0x0520U) +#define DBSC4_REG_DBPDLK0 (DBSC4_REG_BASE + 0x0620U) +#define DBSC4_REG_DBPDRGA0 (DBSC4_REG_BASE + 0x0624U) +#define DBSC4_REG_DBPDRGD0 (DBSC4_REG_BASE + 0x0628U) +#define DBSC4_REG_DBCAM0CTRL0 (DBSC4_REG_BASE + 0x0940U) +#define DBSC4_REG_DBCAM0STAT0 (DBSC4_REG_BASE + 0x0980U) +#define DBSC4_REG_DBCAM1STAT0 (DBSC4_REG_BASE + 0x0990U) +#define DBSC4_REG_DBCAM2STAT0 (DBSC4_REG_BASE + 0x09A0U) +#define DBSC4_REG_DBCAM3STAT0 (DBSC4_REG_BASE + 0x09B0U) +#define DBSC4_BIT_DBACEN_ACCEN ((uint32_t)(1U << 0)) +#define DBSC4_BIT_DBRFEN_ARFEN ((uint32_t)(1U << 0)) +#define DBSC4_BIT_DBCAMxSTAT0 (0x00000001U) +#define DBSC4_BIT_DBDFIPMSTRCNF_PMSTREN (0x00000001U) +#define DBSC4_SET_DBCMD_OPC_PRE (0x04000000U) +#define DBSC4_SET_DBCMD_OPC_SR (0x0A000000U) +#define DBSC4_SET_DBCMD_OPC_PD (0x08000000U) +#define DBSC4_SET_DBCMD_OPC_MRW (0x0E000000U) +#define DBSC4_SET_DBCMD_CH_ALL (0x00800000U) +#define DBSC4_SET_DBCMD_RANK_ALL (0x00040000U) +#define DBSC4_SET_DBCMD_ARG_ALL (0x00000010U) +#define DBSC4_SET_DBCMD_ARG_ENTER (0x00000000U) +#define DBSC4_SET_DBCMD_ARG_MRW_ODTC (0x00000B00U) +#define DBSC4_SET_DBSYSCNT0_WRITE_ENABLE (0x00001234U) +#define DBSC4_SET_DBSYSCNT0_WRITE_DISABLE (0x00000000U) +#define DBSC4_SET_DBPDLK0_PHY_ACCESS (0x0000A55AU) +#define DBSC4_SET_DBPDRGA0_ACIOCR0 (0x0000001AU) +#define DBSC4_SET_DBPDRGD0_ACIOCR0 (0x33C03C11U) +#define DBSC4_SET_DBPDRGA0_DXCCR (0x00000020U) +#define DBSC4_SET_DBPDRGD0_DXCCR (0x00181006U) +#define DBSC4_SET_DBPDRGA0_PGCR1 (0x00000003U) +#define DBSC4_SET_DBPDRGD0_PGCR1 (0x0380C600U) +#define DBSC4_SET_DBPDRGA0_ACIOCR1 (0x0000001BU) +#define DBSC4_SET_DBPDRGD0_ACIOCR1 (0xAAAAAAAAU) +#define DBSC4_SET_DBPDRGA0_ACIOCR3 (0x0000001DU) +#define DBSC4_SET_DBPDRGD0_ACIOCR3 (0xAAAAAAAAU) +#define DBSC4_SET_DBPDRGA0_ACIOCR5 (0x0000001FU) +#define DBSC4_SET_DBPDRGD0_ACIOCR5 (0x000000AAU) +#define DBSC4_SET_DBPDRGA0_DX0GCR2 (0x000000A2U) +#define DBSC4_SET_DBPDRGD0_DX0GCR2 (0xAAAA0000U) +#define DBSC4_SET_DBPDRGA0_DX1GCR2 (0x000000C2U) +#define DBSC4_SET_DBPDRGD0_DX1GCR2 (0xAAAA0000U) +#define DBSC4_SET_DBPDRGA0_DX2GCR2 (0x000000E2U) +#define DBSC4_SET_DBPDRGD0_DX2GCR2 (0xAAAA0000U) +#define DBSC4_SET_DBPDRGA0_DX3GCR2 (0x00000102U) +#define DBSC4_SET_DBPDRGD0_DX3GCR2 (0xAAAA0000U) +#define DBSC4_SET_DBPDRGA0_ZQCR (0x00000090U) +#define DBSC4_SET_DBPDRGD0_ZQCR_MD19_0 (0x04058904U) +#define DBSC4_SET_DBPDRGD0_ZQCR_MD19_1 (0x04058A04U) +#define DBSC4_SET_DBPDRGA0_DX0GCR0 (0x000000A0U) +#define DBSC4_SET_DBPDRGD0_DX0GCR0 (0x7C0002E5U) +#define DBSC4_SET_DBPDRGA0_DX1GCR0 (0x000000C0U) +#define DBSC4_SET_DBPDRGD0_DX1GCR0 (0x7C0002E5U) +#define DBSC4_SET_DBPDRGA0_DX2GCR0 (0x000000E0U) +#define DBSC4_SET_DBPDRGD0_DX2GCR0 (0x7C0002E5U) +#define DBSC4_SET_DBPDRGA0_DX3GCR0 (0x00000100U) +#define DBSC4_SET_DBPDRGD0_DX3GCR0 (0x7C0002E5U) +#define DBSC4_SET_DBPDRGA0_DX0GCR1 (0x000000A1U) +#define DBSC4_SET_DBPDRGD0_DX0GCR1 (0x55550000U) +#define DBSC4_SET_DBPDRGA0_DX1GCR1 (0x000000C1U) +#define DBSC4_SET_DBPDRGD0_DX1GCR1 (0x55550000U) +#define DBSC4_SET_DBPDRGA0_DX2GCR1 (0x000000E1U) +#define DBSC4_SET_DBPDRGD0_DX2GCR1 (0x55550000U) +#define DBSC4_SET_DBPDRGA0_DX3GCR1 (0x00000101U) +#define DBSC4_SET_DBPDRGD0_DX3GCR1 (0x55550000U) +#define DBSC4_SET_DBPDRGA0_DX0GCR3 (0x000000A3U) +#define DBSC4_SET_DBPDRGD0_DX0GCR3 (0x00008484U) +#define DBSC4_SET_DBPDRGA0_DX1GCR3 (0x000000C3U) +#define DBSC4_SET_DBPDRGD0_DX1GCR3 (0x00008484U) +#define DBSC4_SET_DBPDRGA0_DX2GCR3 (0x000000E3U) +#define DBSC4_SET_DBPDRGD0_DX2GCR3 (0x00008484U) +#define DBSC4_SET_DBPDRGA0_DX3GCR3 (0x00000103U) +#define DBSC4_SET_DBPDRGD0_DX3GCR3 (0x00008484U) +#define RST_BASE (0xE6160000U) +#define RST_MODEMR (RST_BASE + 0x0060U) +#define RST_MODEMR_BIT0 (0x00000001U) + +#define RCAR_CNTCR_OFF (0x00U) +#define RCAR_CNTCVL_OFF (0x08U) +#define RCAR_CNTCVU_OFF (0x0CU) +#define RCAR_CNTFID_OFF (0x20U) + +#define RCAR_CNTCR_EN ((uint32_t)1U << 0U) +#define RCAR_CNTCR_FCREQ(x) ((uint32_t)(x) << 8U) + +#if PMIC_ROHM_BD9571 +#define BIT_BKUP_CTRL_OUT ((uint8_t)(1U << 4)) +#define PMIC_BKUP_MODE_CNT (0x20U) +#define PMIC_QLLM_CNT (0x27U) +#define PMIC_RETRY_MAX (100U) +#endif /* PMIC_ROHM_BD9571 */ +#define SCTLR_EL3_M_BIT ((uint32_t)1U << 0) +#define RCAR_CA53CPU_NUM_MAX (4U) +#define RCAR_CA57CPU_NUM_MAX (4U) +#define IS_A53A57(c) ((c) == RCAR_CLUSTER_A53A57) +#define IS_CA57(c) ((c) == RCAR_CLUSTER_CA57) +#define IS_CA53(c) ((c) == RCAR_CLUSTER_CA53) + +#ifndef __ASSEMBLER__ +IMPORT_SYM(unsigned long, __system_ram_start__, SYSTEM_RAM_START); +IMPORT_SYM(unsigned long, __system_ram_end__, SYSTEM_RAM_END); +IMPORT_SYM(unsigned long, __SRAM_COPY_START__, SRAM_COPY_START); +#endif + +uint32_t rcar_pwrc_status(u_register_t mpidr) +{ + uint32_t ret = 0; + uint64_t cm, cpu; + uint32_t reg; + uint32_t c; + + rcar_lock_get(); + + c = rcar_pwrc_get_cluster(); + cm = mpidr & MPIDR_CLUSTER_MASK; + + if (!IS_A53A57(c) && cm != 0) { + ret = RCAR_INVALID; + goto done; + } + + reg = mmio_read_32(RCAR_PRR); + cpu = mpidr & MPIDR_CPU_MASK; + + if (IS_CA53(c)) + if (reg & (1 << (STATE_CA53_CPU + cpu))) + ret = RCAR_INVALID; + if (IS_CA57(c)) + if (reg & (1 << (STATE_CA57_CPU + cpu))) + ret = RCAR_INVALID; +done: + rcar_lock_release(); + + return ret; +} + +static void scu_power_up(u_register_t mpidr) +{ + uintptr_t reg_pwrsr, reg_cpumcr, reg_pwron, reg_pwrer; + uint32_t c, sysc_reg_bit; + uint32_t lsi_product; + uint32_t lsi_cut; + + c = rcar_pwrc_get_mpidr_cluster(mpidr); + reg_cpumcr = IS_CA57(c) ? RCAR_CA57CPUCMCR : RCAR_CA53CPUCMCR; + sysc_reg_bit = IS_CA57(c) ? BIT_CA57_SCU : BIT_CA53_SCU; + reg_pwron = IS_CA57(c) ? RCAR_PWRONCR5 : RCAR_PWRONCR3; + reg_pwrer = IS_CA57(c) ? RCAR_PWRER5 : RCAR_PWRER3; + reg_pwrsr = IS_CA57(c) ? RCAR_PWRSR5 : RCAR_PWRSR3; + + if ((mmio_read_32(reg_pwrsr) & STATUS_PWRDOWN) == 0) + return; + + if (mmio_read_32(reg_cpumcr) != 0) + mmio_write_32(reg_cpumcr, 0); + + lsi_product = mmio_read_32((uintptr_t)RCAR_PRR); + lsi_cut = lsi_product & PRR_CUT_MASK; + lsi_product &= PRR_PRODUCT_MASK; + + if ((lsi_product == PRR_PRODUCT_M3 && lsi_cut >= PRR_PRODUCT_30) || + lsi_product == PRR_PRODUCT_H3 || + lsi_product == PRR_PRODUCT_M3N || + lsi_product == PRR_PRODUCT_E3) { + mmio_setbits_32(RCAR_SYSCEXTMASK, SYSCEXTMASK_EXTMSK0); + } + + mmio_setbits_32(RCAR_SYSCIER, sysc_reg_bit); + mmio_setbits_32(RCAR_SYSCIMR, sysc_reg_bit); + + do { + while ((mmio_read_32(RCAR_SYSCSR) & REQ_RESUME) == 0) + ; + mmio_write_32(reg_pwron, 1); + } while (mmio_read_32(reg_pwrer) & 1); + + while ((mmio_read_32(RCAR_SYSCISR) & sysc_reg_bit) == 0) + ; + mmio_write_32(RCAR_SYSCISCR, sysc_reg_bit); + + if ((lsi_product == PRR_PRODUCT_M3 && lsi_cut >= PRR_PRODUCT_30) || + lsi_product == PRR_PRODUCT_H3 || + lsi_product == PRR_PRODUCT_M3N || + lsi_product == PRR_PRODUCT_E3) { + mmio_clrbits_32(RCAR_SYSCEXTMASK, SYSCEXTMASK_EXTMSK0); + } + + while ((mmio_read_32(reg_pwrsr) & STATUS_PWRUP) == 0) + ; +} + +void rcar_pwrc_cpuon(u_register_t mpidr) +{ + uint32_t res_data, on_data; + uintptr_t res_reg, on_reg; + uint32_t limit, c; + uint64_t cpu; + + rcar_lock_get(); + + c = rcar_pwrc_get_mpidr_cluster(mpidr); + res_reg = IS_CA53(c) ? RCAR_CA53RESCNT : RCAR_CA57RESCNT; + on_reg = IS_CA53(c) ? RCAR_CA53WUPCR : RCAR_CA57WUPCR; + limit = IS_CA53(c) ? 0x5A5A0000 : 0xA5A50000; + + res_data = mmio_read_32(res_reg) | limit; + scu_power_up(mpidr); + cpu = mpidr & MPIDR_CPU_MASK; + on_data = 1 << cpu; + mmio_write_32(CPG_CPGWPR, ~on_data); + mmio_write_32(on_reg, on_data); + mmio_write_32(res_reg, res_data & (~(1 << (3 - cpu)))); + + rcar_lock_release(); +} + +void rcar_pwrc_cpuoff(u_register_t mpidr) +{ + uint32_t c; + uintptr_t reg; + uint64_t cpu; + + rcar_lock_get(); + + cpu = mpidr & MPIDR_CPU_MASK; + c = rcar_pwrc_get_mpidr_cluster(mpidr); + reg = IS_CA53(c) ? RCAR_CA53CPU0CR : RCAR_CA57CPU0CR; + + if (read_mpidr_el1() != mpidr) + panic(); + + mmio_write_32(CPG_CPGWPR, ~CPU_PWR_OFF); + mmio_write_32(reg + cpu * 0x0010, CPU_PWR_OFF); + + rcar_lock_release(); +} + +void rcar_pwrc_enable_interrupt_wakeup(u_register_t mpidr) +{ + uint32_t c, shift_irq, shift_fiq; + uintptr_t reg; + uint64_t cpu; + + rcar_lock_get(); + + cpu = mpidr & MPIDR_CPU_MASK; + c = rcar_pwrc_get_mpidr_cluster(mpidr); + reg = IS_CA53(c) ? RCAR_WUPMSKCA53 : RCAR_WUPMSKCA57; + + shift_irq = WUP_IRQ_SHIFT + cpu; + shift_fiq = WUP_FIQ_SHIFT + cpu; + + mmio_clrbits_32(reg, ((uint32_t) 1 << shift_irq) | + ((uint32_t) 1 << shift_fiq)); + rcar_lock_release(); +} + +void rcar_pwrc_disable_interrupt_wakeup(u_register_t mpidr) +{ + uint32_t c, shift_irq, shift_fiq; + uintptr_t reg; + uint64_t cpu; + + rcar_lock_get(); + + cpu = mpidr & MPIDR_CPU_MASK; + c = rcar_pwrc_get_mpidr_cluster(mpidr); + reg = IS_CA53(c) ? RCAR_WUPMSKCA53 : RCAR_WUPMSKCA57; + + shift_irq = WUP_IRQ_SHIFT + cpu; + shift_fiq = WUP_FIQ_SHIFT + cpu; + + mmio_setbits_32(reg, ((uint32_t) 1 << shift_irq) | + ((uint32_t) 1 << shift_fiq)); + rcar_lock_release(); +} + +void rcar_pwrc_all_disable_interrupt_wakeup(void) +{ + uint32_t cpu_num; + u_register_t cl, cpu, mpidr; + + const uint32_t cluster[PLATFORM_CLUSTER_COUNT] = { + RCAR_CLUSTER_CA57, + RCAR_CLUSTER_CA53 + }; + + for (cl = 0; cl < PLATFORM_CLUSTER_COUNT; cl++) { + cpu_num = rcar_pwrc_get_cpu_num(cluster[cl]); + for (cpu = 0; cpu < cpu_num; cpu++) { + mpidr = ((cl << MPIDR_AFFINITY_BITS) | cpu); + if (mpidr == rcar_boot_mpidr) { + rcar_pwrc_enable_interrupt_wakeup(mpidr); + } else { + rcar_pwrc_disable_interrupt_wakeup(mpidr); + } + } + } +} + +void rcar_pwrc_clusteroff(u_register_t mpidr) +{ + uint32_t c, product, cut, reg; + uintptr_t dst; + + rcar_lock_get(); + + reg = mmio_read_32(RCAR_PRR); + product = reg & PRR_PRODUCT_MASK; + cut = reg & PRR_CUT_MASK; + + c = rcar_pwrc_get_mpidr_cluster(mpidr); + dst = IS_CA53(c) ? RCAR_CA53CPUCMCR : RCAR_CA57CPUCMCR; + + if (product == PRR_PRODUCT_M3 && cut < PRR_PRODUCT_30) { + goto done; + } + + if (product == PRR_PRODUCT_H3 && cut <= PRR_PRODUCT_20) { + goto done; + } + + /* all of the CPUs in the cluster is in the CoreStandby mode */ + mmio_write_32(dst, MODE_L2_DOWN); +done: + rcar_lock_release(); +} + +static uint64_t rcar_pwrc_saved_cntpct_el0; +static uint32_t rcar_pwrc_saved_cntfid; + +#if RCAR_SYSTEM_SUSPEND +static void rcar_pwrc_save_timer_state(void) +{ + rcar_pwrc_saved_cntpct_el0 = read_cntpct_el0(); + + rcar_pwrc_saved_cntfid = + mmio_read_32((uintptr_t)(RCAR_CNTC_BASE + RCAR_CNTFID_OFF)); +} +#endif /* RCAR_SYSTEM_SUSPEND */ + +void rcar_pwrc_restore_timer_state(void) +{ + /* Stop timer before restoring counter value */ + mmio_write_32((uintptr_t)(RCAR_CNTC_BASE + RCAR_CNTCR_OFF), 0U); + + mmio_write_32((uintptr_t)(RCAR_CNTC_BASE + RCAR_CNTCVL_OFF), + (uint32_t)(rcar_pwrc_saved_cntpct_el0 & 0xFFFFFFFFU)); + mmio_write_32((uintptr_t)(RCAR_CNTC_BASE + RCAR_CNTCVU_OFF), + (uint32_t)(rcar_pwrc_saved_cntpct_el0 >> 32U)); + + mmio_write_32((uintptr_t)(RCAR_CNTC_BASE + RCAR_CNTFID_OFF), + rcar_pwrc_saved_cntfid); + + /* Start generic timer back */ + write_cntfrq_el0((u_register_t)plat_get_syscnt_freq2()); + + mmio_write_32((uintptr_t)(RCAR_CNTC_BASE + RCAR_CNTCR_OFF), + (RCAR_CNTCR_FCREQ(0U) | RCAR_CNTCR_EN)); +} + +#if !PMIC_ROHM_BD9571 +void rcar_pwrc_system_reset(void) +{ + mmio_write_32(RCAR_SRESCR, 0x5AA50000U | BIT_SOFTRESET); +} +#endif /* PMIC_ROHM_BD9571 */ + +#define RST_CA53_CPU0_BARH (0xE6160080U) +#define RST_CA53_CPU0_BARL (0xE6160084U) +#define RST_CA57_CPU0_BARH (0xE61600C0U) +#define RST_CA57_CPU0_BARL (0xE61600C4U) + +void rcar_pwrc_setup(void) +{ + uintptr_t rst_barh; + uintptr_t rst_barl; + uint32_t i, j; + uint64_t reset = (uint64_t) (&plat_secondary_reset) & 0xFFFFFFFF; + + const uint32_t cluster[PLATFORM_CLUSTER_COUNT] = { + RCAR_CLUSTER_CA53, + RCAR_CLUSTER_CA57 + }; + const uintptr_t reg_barh[PLATFORM_CLUSTER_COUNT] = { + RST_CA53_CPU0_BARH, + RST_CA57_CPU0_BARH + }; + const uintptr_t reg_barl[PLATFORM_CLUSTER_COUNT] = { + RST_CA53_CPU0_BARL, + RST_CA57_CPU0_BARL + }; + + for (i = 0; i < PLATFORM_CLUSTER_COUNT; i++) { + rst_barh = reg_barh[i]; + rst_barl = reg_barl[i]; + for (j = 0; j < rcar_pwrc_get_cpu_num(cluster[i]); j++) { + mmio_write_32(rst_barh, 0); + mmio_write_32(rst_barl, (uint32_t) reset); + rst_barh += 0x10; + rst_barl += 0x10; + } + } + + rcar_lock_init(); +} + +#if RCAR_SYSTEM_SUSPEND +#define DBCAM_FLUSH(__bit) \ +do { \ + ; \ +} while (!(mmio_read_32(DBSC4_REG_DBCAM##__bit##STAT0) & DBSC4_BIT_DBCAMxSTAT0)) + + +static void __attribute__ ((section(".system_ram"))) + rcar_pwrc_set_self_refresh(void) +{ + uint32_t reg = mmio_read_32(RCAR_PRR); + uint32_t cut, product; + + product = reg & PRR_PRODUCT_MASK; + cut = reg & PRR_CUT_MASK; + + if (product == PRR_PRODUCT_M3 && cut < PRR_PRODUCT_30) { + goto self_refresh; + } + + if (product == PRR_PRODUCT_H3 && cut < PRR_PRODUCT_20) { + goto self_refresh; + } + + mmio_write_32(DBSC4_REG_DBSYSCNT0, DBSC4_SET_DBSYSCNT0_WRITE_ENABLE); + +self_refresh: + + /* DFI_PHYMSTR_ACK setting */ + mmio_write_32(DBSC4_REG_DBDFIPMSTRCNF, + mmio_read_32(DBSC4_REG_DBDFIPMSTRCNF) & + (~DBSC4_BIT_DBDFIPMSTRCNF_PMSTREN)); + + /* Set the Self-Refresh mode */ + mmio_write_32(DBSC4_REG_DBACEN, 0); + + if (product == PRR_PRODUCT_H3 && cut < PRR_PRODUCT_20) + rcar_micro_delay(100); + else if (product == PRR_PRODUCT_H3) { + mmio_write_32(DBSC4_REG_DBCAM0CTRL0, 1); + DBCAM_FLUSH(0); + DBCAM_FLUSH(1); + DBCAM_FLUSH(2); + DBCAM_FLUSH(3); + mmio_write_32(DBSC4_REG_DBCAM0CTRL0, 0); + } else if (product == PRR_PRODUCT_M3) { + mmio_write_32(DBSC4_REG_DBCAM0CTRL0, 1); + DBCAM_FLUSH(0); + DBCAM_FLUSH(1); + mmio_write_32(DBSC4_REG_DBCAM0CTRL0, 0); + } else { + mmio_write_32(DBSC4_REG_DBCAM0CTRL0, 1); + DBCAM_FLUSH(0); + mmio_write_32(DBSC4_REG_DBCAM0CTRL0, 0); + } + + /* Set the SDRAM calibration configuration register */ + mmio_write_32(DBSC4_REG_DBCALCNF, 0); + + reg = DBSC4_SET_DBCMD_OPC_PRE | DBSC4_SET_DBCMD_CH_ALL | + DBSC4_SET_DBCMD_RANK_ALL | DBSC4_SET_DBCMD_ARG_ALL; + mmio_write_32(DBSC4_REG_DBCMD, reg); + while (mmio_read_32(DBSC4_REG_DBWAIT)) + ; + + /* Self-Refresh entry command */ + reg = DBSC4_SET_DBCMD_OPC_SR | DBSC4_SET_DBCMD_CH_ALL | + DBSC4_SET_DBCMD_RANK_ALL | DBSC4_SET_DBCMD_ARG_ENTER; + mmio_write_32(DBSC4_REG_DBCMD, reg); + while (mmio_read_32(DBSC4_REG_DBWAIT)) + ; + + /* Mode Register Write command. (ODT disabled) */ + reg = DBSC4_SET_DBCMD_OPC_MRW | DBSC4_SET_DBCMD_CH_ALL | + DBSC4_SET_DBCMD_RANK_ALL | DBSC4_SET_DBCMD_ARG_MRW_ODTC; + mmio_write_32(DBSC4_REG_DBCMD, reg); + while (mmio_read_32(DBSC4_REG_DBWAIT)) + ; + + /* Power Down entry command */ + reg = DBSC4_SET_DBCMD_OPC_PD | DBSC4_SET_DBCMD_CH_ALL | + DBSC4_SET_DBCMD_RANK_ALL | DBSC4_SET_DBCMD_ARG_ENTER; + mmio_write_32(DBSC4_REG_DBCMD, reg); + while (mmio_read_32(DBSC4_REG_DBWAIT)) + ; + + /* Set the auto-refresh enable register */ + mmio_write_32(DBSC4_REG_DBRFEN, 0U); + rcar_micro_delay(1U); + + if (product == PRR_PRODUCT_M3 && cut < PRR_PRODUCT_30) + return; + + if (product == PRR_PRODUCT_H3 && cut < PRR_PRODUCT_20) + return; + + mmio_write_32(DBSC4_REG_DBSYSCNT0, DBSC4_SET_DBSYSCNT0_WRITE_DISABLE); +} + +static void __attribute__ ((section(".system_ram"))) +rcar_pwrc_set_self_refresh_e3(void) +{ + uint32_t ddr_md; + uint32_t reg; + + ddr_md = (mmio_read_32(RST_MODEMR) >> 19) & RST_MODEMR_BIT0; + + /* Write enable */ + mmio_write_32(DBSC4_REG_DBSYSCNT0, DBSC4_SET_DBSYSCNT0_WRITE_ENABLE); + mmio_write_32(DBSC4_REG_DBACEN, 0); + DBCAM_FLUSH(0); + + reg = DBSC4_SET_DBCMD_OPC_PRE | DBSC4_SET_DBCMD_CH_ALL | + DBSC4_SET_DBCMD_RANK_ALL | DBSC4_SET_DBCMD_ARG_ALL; + mmio_write_32(DBSC4_REG_DBCMD, reg); + while (mmio_read_32(DBSC4_REG_DBWAIT)) + ; + + reg = DBSC4_SET_DBCMD_OPC_SR | DBSC4_SET_DBCMD_CH_ALL | + DBSC4_SET_DBCMD_RANK_ALL | DBSC4_SET_DBCMD_ARG_ENTER; + mmio_write_32(DBSC4_REG_DBCMD, reg); + while (mmio_read_32(DBSC4_REG_DBWAIT)) + ; + + /* + * Set the auto-refresh enable register + * Set the ARFEN bit to 0 in the DBRFEN + */ + mmio_write_32(DBSC4_REG_DBRFEN, 0); + + mmio_write_32(DBSC4_REG_DBPDLK0, DBSC4_SET_DBPDLK0_PHY_ACCESS); + + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_ACIOCR0); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_ACIOCR0); + + /* DDR_DXCCR */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DXCCR); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DXCCR); + + /* DDR_PGCR1 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_PGCR1); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_PGCR1); + + /* DDR_ACIOCR1 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_ACIOCR1); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_ACIOCR1); + + /* DDR_ACIOCR3 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_ACIOCR3); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_ACIOCR3); + + /* DDR_ACIOCR5 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_ACIOCR5); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_ACIOCR5); + + /* DDR_DX0GCR2 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX0GCR2); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX0GCR2); + + /* DDR_DX1GCR2 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX1GCR2); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX1GCR2); + + /* DDR_DX2GCR2 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX2GCR2); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX2GCR2); + + /* DDR_DX3GCR2 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX3GCR2); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX3GCR2); + + /* DDR_ZQCR */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_ZQCR); + + mmio_write_32(DBSC4_REG_DBPDRGD0, ddr_md == 0 ? + DBSC4_SET_DBPDRGD0_ZQCR_MD19_0 : + DBSC4_SET_DBPDRGD0_ZQCR_MD19_1); + + /* DDR_DX0GCR0 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX0GCR0); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX0GCR0); + + /* DDR_DX1GCR0 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX1GCR0); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX1GCR0); + + /* DDR_DX2GCR0 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX2GCR0); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX2GCR0); + + /* DDR_DX3GCR0 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX3GCR0); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX3GCR0); + + /* DDR_DX0GCR1 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX0GCR1); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX0GCR1); + + /* DDR_DX1GCR1 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX1GCR1); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX1GCR1); + + /* DDR_DX2GCR1 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX2GCR1); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX2GCR1); + + /* DDR_DX3GCR1 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX3GCR1); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX3GCR1); + + /* DDR_DX0GCR3 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX0GCR3); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX0GCR3); + + /* DDR_DX1GCR3 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX1GCR3); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX1GCR3); + + /* DDR_DX2GCR3 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX2GCR3); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX2GCR3); + + /* DDR_DX3GCR3 */ + mmio_write_32(DBSC4_REG_DBPDRGA0, DBSC4_SET_DBPDRGA0_DX3GCR3); + mmio_write_32(DBSC4_REG_DBPDRGD0, DBSC4_SET_DBPDRGD0_DX3GCR3); + + /* Write disable */ + mmio_write_32(DBSC4_REG_DBSYSCNT0, DBSC4_SET_DBSYSCNT0_WRITE_DISABLE); +} + +void __attribute__ ((section(".system_ram"))) __attribute__ ((noinline)) +rcar_pwrc_go_suspend_to_ram(void) +{ +#if PMIC_ROHM_BD9571 + int32_t rc = -1, qllm = -1; + uint8_t mode; + uint32_t i; +#endif + uint32_t reg, product; + + reg = mmio_read_32(RCAR_PRR); + product = reg & PRR_PRODUCT_MASK; + + if (product != PRR_PRODUCT_E3) + rcar_pwrc_set_self_refresh(); + else + rcar_pwrc_set_self_refresh_e3(); + +#if PMIC_ROHM_BD9571 + /* Set QLLM Cnt Disable */ + for (i = 0; (i < PMIC_RETRY_MAX) && (qllm != 0); i++) + qllm = rcar_iic_dvfs_send(PMIC, PMIC_QLLM_CNT, 0); + + /* Set trigger of power down to PMIV */ + for (i = 0; (i < PMIC_RETRY_MAX) && (rc != 0) && (qllm == 0); i++) { + rc = rcar_iic_dvfs_receive(PMIC, PMIC_BKUP_MODE_CNT, &mode); + if (rc == 0) { + mode |= BIT_BKUP_CTRL_OUT; + rc = rcar_iic_dvfs_send(PMIC, PMIC_BKUP_MODE_CNT, mode); + } + } +#endif + wfi(); + + while (1) + ; +} + +void rcar_pwrc_set_suspend_to_ram(void) +{ + uintptr_t jump = (uintptr_t) &rcar_pwrc_go_suspend_to_ram; + uintptr_t stack = (uintptr_t) (DEVICE_SRAM_STACK_BASE + + DEVICE_SRAM_STACK_SIZE); + uint32_t sctlr; + + rcar_pwrc_save_timer_state(); + + /* disable MMU */ + sctlr = (uint32_t) read_sctlr_el3(); + sctlr &= (uint32_t) ~SCTLR_EL3_M_BIT; + write_sctlr_el3((uint64_t) sctlr); + + rcar_pwrc_switch_stack(jump, stack, NULL); +} + +void rcar_pwrc_init_suspend_to_ram(void) +{ +#if PMIC_ROHM_BD9571 + uint8_t mode; + + if (rcar_iic_dvfs_receive(PMIC, PMIC_BKUP_MODE_CNT, &mode)) + panic(); + + mode &= (uint8_t) (~BIT_BKUP_CTRL_OUT); + if (rcar_iic_dvfs_send(PMIC, PMIC_BKUP_MODE_CNT, mode)) + panic(); +#endif +} + +void rcar_pwrc_suspend_to_ram(void) +{ +#if RCAR_SYSTEM_RESET_KEEPON_DDR + int32_t error; + + error = rcar_iic_dvfs_send(PMIC, REG_KEEP10, 0); + if (error) { + ERROR("Failed send KEEP10 init ret=%d\n", error); + return; + } +#endif + rcar_pwrc_set_suspend_to_ram(); +} +#endif + +void rcar_pwrc_code_copy_to_system_ram(void) +{ + int ret __attribute__ ((unused)); /* in assert */ + uint32_t attr; + struct device_sram_t { + uintptr_t base; + size_t len; + } sram = { + .base = (uintptr_t) DEVICE_SRAM_BASE, + .len = DEVICE_SRAM_SIZE, + }; + struct ddr_code_t { + void *base; + size_t len; + } code = { + .base = (void *) SRAM_COPY_START, + .len = SYSTEM_RAM_END - SYSTEM_RAM_START, + }; + + attr = MT_MEMORY | MT_RW | MT_SECURE | MT_EXECUTE_NEVER; + ret = xlat_change_mem_attributes(sram.base, sram.len, attr); + assert(ret == 0); + + memcpy((void *)sram.base, code.base, code.len); + flush_dcache_range((uint64_t) sram.base, code.len); + + attr = MT_MEMORY | MT_RO | MT_SECURE | MT_EXECUTE; + ret = xlat_change_mem_attributes(sram.base, sram.len, attr); + assert(ret == 0); + + /* Invalidate instruction cache */ + plat_invalidate_icache(); + dsb(); + isb(); +} + +uint32_t rcar_pwrc_get_cluster(void) +{ + uint32_t reg; + + reg = mmio_read_32(RCAR_PRR); + + if (reg & (1U << (STATE_CA53_CPU + RCAR_CA53CPU_NUM_MAX))) + return RCAR_CLUSTER_CA57; + + if (reg & (1U << (STATE_CA57_CPU + RCAR_CA57CPU_NUM_MAX))) + return RCAR_CLUSTER_CA53; + + return RCAR_CLUSTER_A53A57; +} + +uint32_t rcar_pwrc_get_mpidr_cluster(u_register_t mpidr) +{ + uint32_t c = rcar_pwrc_get_cluster(); + + if (IS_A53A57(c)) { + if (mpidr & MPIDR_CLUSTER_MASK) + return RCAR_CLUSTER_CA53; + + return RCAR_CLUSTER_CA57; + } + + return c; +} + +#if RCAR_LSI == RCAR_D3 +uint32_t rcar_pwrc_get_cpu_num(uint32_t c) +{ + return 1; +} +#else +uint32_t rcar_pwrc_get_cpu_num(uint32_t c) +{ + uint32_t reg = mmio_read_32(RCAR_PRR); + uint32_t count = 0, i; + + if (IS_A53A57(c) || IS_CA53(c)) { + if (reg & (1 << (STATE_CA53_CPU + RCAR_CA53CPU_NUM_MAX))) + goto count_ca57; + + for (i = 0; i < RCAR_CA53CPU_NUM_MAX; i++) { + if (reg & (1 << (STATE_CA53_CPU + i))) + continue; + count++; + } + } + +count_ca57: + if (IS_A53A57(c) || IS_CA57(c)) { + if (reg & (1U << (STATE_CA57_CPU + RCAR_CA57CPU_NUM_MAX))) + goto done; + + for (i = 0; i < RCAR_CA57CPU_NUM_MAX; i++) { + if (reg & (1 << (STATE_CA57_CPU + i))) + continue; + count++; + } + } + +done: + return count; +} +#endif + +int32_t rcar_pwrc_cpu_on_check(u_register_t mpidr) +{ + uint64_t i; + uint64_t j; + uint64_t cpu_count; + uintptr_t reg_PSTR; + uint32_t status; + uint64_t my_cpu; + int32_t rtn; + uint32_t my_cluster_type; + const uint32_t cluster_type[PLATFORM_CLUSTER_COUNT] = { + RCAR_CLUSTER_CA53, + RCAR_CLUSTER_CA57 + }; + const uintptr_t registerPSTR[PLATFORM_CLUSTER_COUNT] = { + RCAR_CA53PSTR, + RCAR_CA57PSTR + }; + + my_cluster_type = rcar_pwrc_get_cluster(); + + rtn = 0; + my_cpu = mpidr & ((uint64_t)(MPIDR_CPU_MASK)); + for (i = 0U; i < ((uint64_t)(PLATFORM_CLUSTER_COUNT)); i++) { + cpu_count = rcar_pwrc_get_cpu_num(cluster_type[i]); + reg_PSTR = registerPSTR[i]; + for (j = 0U; j < cpu_count; j++) { + if ((my_cluster_type != cluster_type[i]) || (my_cpu != j)) { + status = mmio_read_32(reg_PSTR) >> (j * 4U); + if ((status & 0x00000003U) == 0U) { + rtn--; + } + } + } + } + + return rtn; +} |