diff options
Diffstat (limited to 'plat/mediatek/mt8183/drivers/spmc/mtspmc.c')
| -rw-r--r-- | plat/mediatek/mt8183/drivers/spmc/mtspmc.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/plat/mediatek/mt8183/drivers/spmc/mtspmc.c b/plat/mediatek/mt8183/drivers/spmc/mtspmc.c new file mode 100644 index 0000000..ac8e1b4 --- /dev/null +++ b/plat/mediatek/mt8183/drivers/spmc/mtspmc.c @@ -0,0 +1,366 @@ +/* + * Copyright (c) 2019, MediaTek Inc. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <arch_helpers.h> +#include <cortex_a53.h> +#include <cortex_a73.h> +#include <common/debug.h> +#include <lib/mmio.h> +#include <platform_def.h> +#include <mcucfg.h> +#include <spm.h> +#include <drivers/delay_timer.h> +#include <mtspmc.h> + +#include "mtspmc_private.h" + + +static void set_retention(int cluster, int tick) +{ + uint64_t cpuectlr; + + if (cluster) + cpuectlr = read_a73_cpuectlr_el1(); + else + cpuectlr = read_a53_cpuectlr_el1(); + + cpuectlr &= ~0x7ULL; + cpuectlr |= tick & 0x7; + + if (cluster) + write_a73_cpuectlr_el1(cpuectlr); + else + write_a53_cpuectlr_el1(cpuectlr); +} + +void spm_enable_cpu_auto_off(int cluster, int cpu) +{ + uintptr_t reg = per_cpu(cluster, cpu, MCUCFG_SPARK); + + set_retention(cluster, 1); + mmio_clrbits_32(reg, SW_NO_WAIT_Q); +} + +void spm_disable_cpu_auto_off(int cluster, int cpu) +{ + uintptr_t reg = per_cpu(cluster, cpu, MCUCFG_SPARK); + + mmio_setbits_32(reg, SW_NO_WAIT_Q); + set_retention(cluster, 0); +} + +void spm_set_cpu_power_off(int cluster, int cpu) +{ + mmio_clrbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWRCTRL_PWR_ON); +} + +void spm_enable_cluster_auto_off(int cluster) +{ + assert(cluster); + + mmio_clrbits_32(MCUCFG_MP2_SPMC, SW_NO_WAIT_Q); + mmio_clrbits_32(MCUCFG_MP2_COQ, BIT(0)); + + mmio_clrbits_32(SPM_SPMC_DORMANT_ENABLE, MP1_SPMC_SRAM_DORMANT_EN); + + mmio_clrbits_32(per_cluster(cluster, SPM_CLUSTER_PWR), PWRCTRL_PWR_ON); +} + +void mcucfg_set_bootaddr(int cluster, int cpu, uintptr_t bootaddr) +{ + uintptr_t reg; + const uintptr_t mp2_bootreg[] = { + MCUCFG_MP2_RVADDR0, MCUCFG_MP2_RVADDR1, + MCUCFG_MP2_RVADDR2, MCUCFG_MP2_RVADDR3 }; + + if (cluster) { + assert(cpu >= 0 && cpu < 4); + reg = mp2_bootreg[cpu]; + } else { + reg = per_cpu(cluster, cpu, MCUCFG_BOOTADDR); + } + + mmio_write_32(reg, bootaddr); +} + +uintptr_t mcucfg_get_bootaddr(int cluster, int cpu) +{ + uintptr_t reg; + const uintptr_t mp2_bootreg[] = { + MCUCFG_MP2_RVADDR0, MCUCFG_MP2_RVADDR1, + MCUCFG_MP2_RVADDR2, MCUCFG_MP2_RVADDR3 }; + + if (cluster) { + assert(cpu >= 0 && cpu < 4); + reg = mp2_bootreg[cpu]; + } else { + reg = per_cpu(cluster, cpu, MCUCFG_BOOTADDR); + } + + return mmio_read_32(reg); +} + +void mcucfg_init_archstate(int cluster, int cpu, int arm64) +{ + uintptr_t reg; + int i; + + reg = per_cluster(cluster, MCUCFG_INITARCH); + i = cluster ? 16 : 12; + + mmio_setbits_32(reg, (arm64 & 1) << (i + cpu)); +} + +/** + * Return power state of specified subsystem + * + * @mask: mask to SPM_PWR_STATUS to query the power state + * of one subsystem. + * RETURNS: + * 0 (the subsys was powered off) + * 1 (the subsys was powered on) + */ +int spm_get_powerstate(uint32_t mask) +{ + return mmio_read_32(SPM_PWR_STATUS) & mask; +} + +int spm_get_cluster_powerstate(int cluster) +{ + uint32_t mask; + + mask = cluster ? PWR_STATUS_MP1_CPUTOP : PWR_STATUS_MP0_CPUTOP; + + return spm_get_powerstate(mask); +} + +int spm_get_cpu_powerstate(int cluster, int cpu) +{ + uint32_t i; + + /* + * a quick way to specify the mask of cpu[0-3]/cpu[4-7] in PWR_STATUS + * register which are the BITS[9:12](MP0_CPU0~3) and + * BITS[16:19](MP1_CPU0~3) + */ + i = (cluster) ? 16 : 9; + i = 1 << (i + cpu); + + return spm_get_powerstate(i); +} + +int spmc_init(void) +{ + /* enable SPM register control */ + mmio_write_32(SPM_POWERON_CONFIG_EN, + PROJECT_CODE | MD_BCLK_CG_EN | BCLK_CG_EN); + +#if SPMC_MODE == 1 + INFO("SPM: enable SPMC mode\n"); + + /* 0: SPMC mode 1: Legacy mode */ + mmio_write_32(SPM_BYPASS_SPMC, 0); + + mmio_clrbits_32(per_cluster(0, SPM_CLUSTER_PWR), PWRCTRL_PWR_ON_2ND); + + mmio_clrbits_32(per_cpu(0, 0, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + mmio_clrbits_32(per_cpu(0, 1, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + mmio_clrbits_32(per_cpu(0, 2, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + mmio_clrbits_32(per_cpu(0, 3, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + + mmio_setbits_32(per_cpu(0, 1, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + mmio_setbits_32(per_cpu(0, 2, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + mmio_setbits_32(per_cpu(0, 3, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); +#endif + + mmio_clrbits_32(per_cluster(1, SPM_CLUSTER_PWR), PWRCTRL_PWR_ON_2ND); + mmio_setbits_32(per_cluster(1, SPM_CLUSTER_PWR), PWRCTRL_PWR_RST_B); + mmio_clrbits_32(per_cluster(1, SPM_CLUSTER_PWR), PWRCTRL_PWR_CLK_DIS); + + mmio_clrbits_32(per_cpu(1, 0, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + mmio_clrbits_32(per_cpu(1, 1, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + mmio_clrbits_32(per_cpu(1, 2, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + mmio_clrbits_32(per_cpu(1, 3, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + + mmio_setbits_32(per_cpu(1, 0, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + mmio_setbits_32(per_cpu(1, 1, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + mmio_setbits_32(per_cpu(1, 2, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + mmio_setbits_32(per_cpu(1, 3, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + + return 0; +} + +/** + * Power on a core with specified cluster and core index + * + * @cluster: the cluster ID of the CPU which to be powered on + * @cpu: the CPU ID of the CPU which to be powered on + */ +void spm_poweron_cpu(int cluster, int cpu) +{ + INFO("spmc: power on core %d.%d\n", cluster, cpu); + + /* STA_POWER_ON */ + /* Start to turn on MP0_CPU0 */ + + /* Set PWR_RST_B = 1 */ + mmio_setbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + + /* Set PWR_ON = 1 */ + mmio_setbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWRCTRL_PWR_ON); + + /* Wait until MP0_CPU0_PWR_STA_MASK = 1 */ + while (!spm_get_cpu_powerstate(cluster, cpu)) + ; + + /* Finish to turn on MP0_CPU0 */ + INFO("spmc: power on core %d.%d successfully\n", cluster, cpu); +} + +/** + * Power off a core with specified cluster and core index + * + * @cluster: the cluster ID of the CPU which to be powered off + * @cpu: the CPU ID of the CPU which to be powered off + */ +void spm_poweroff_cpu(int cluster, int cpu) +{ + INFO("spmc: power off core %d.%d\n", cluster, cpu); + + /* Start to turn off MP0_CPU0 */ + /* Set PWR_ON_2ND = 0 */ + mmio_clrbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWRCTRL_PWR_ON_2ND); + + /* Set PWR_ON = 0 */ + mmio_clrbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWRCTRL_PWR_ON); + + /* Wait until MP0_CPU0_PWR_STA_MASK = 0 */ + while (spm_get_cpu_powerstate(cluster, cpu)) + ; + + /* Set PWR_RST_B = 0 */ + mmio_clrbits_32(per_cpu(cluster, cpu, SPM_CPU_PWR), PWRCTRL_PWR_RST_B); + + /* Finish to turn off MP0_CPU0 */ + INFO("spmc: power off core %d.%d successfully\n", cluster, cpu); +} + +/** + * Power off a cluster with specified index + * + * @cluster: the cluster index which to be powered off + */ +void spm_poweroff_cluster(int cluster) +{ + uint32_t mask; + uint32_t pwr_rst_ctl; + + INFO("spmc: power off cluster %d\n", cluster); + + /* Start to turn off MP0_CPUTOP */ + /* Set bus protect - step1 : 0 */ + mask = (cluster) ? MP1_CPUTOP_PROT_STEP1_0_MASK : + MP0_CPUTOP_PROT_STEP1_0_MASK; + mmio_write_32(INFRA_TOPAXI_PROTECTEN_1_SET, mask); + + while ((mmio_read_32(INFRA_TOPAXI_PROTECTEN_STA1_1) & mask) != mask) + ; + + /* Set PWR_ON_2ND = 0 */ + mmio_clrbits_32(per_cluster(cluster, SPM_CLUSTER_PWR), + PWRCTRL_PWR_ON_2ND); + + /* SPMC_DORMANT_ENABLE[0]=0 */ + mask = (cluster) ? MP1_SPMC_SRAM_DORMANT_EN : MP0_SPMC_SRAM_DORMANT_EN; + mmio_clrbits_32(SPM_SPMC_DORMANT_ENABLE, mask); + + /* Set PWR_ON = 0" */ + mmio_clrbits_32(per_cluster(cluster, SPM_CLUSTER_PWR), PWRCTRL_PWR_ON); + + /* Wait until MP0_CPUTOP_PWR_STA_MASK = 0 */ + while (spm_get_cluster_powerstate(cluster)) + ; + + /* NOTE + * Following flow only for BIG core cluster. It was from + * application note but not covered in mtcmos_ctrl.c + */ + if (cluster) { + pwr_rst_ctl = mmio_read_32(MCUCFG_MP2_PWR_RST_CTL); + mmio_write_32(MCUCFG_MP2_PWR_RST_CTL, + (pwr_rst_ctl & ~SW_RST_B) | TOPAON_APB_MASK); + } + + /* CPU_EXT_BUCK_ISO[0]=1 */ + if (cluster) + mmio_setbits_32(SPM_CPU_EXT_BUCK_ISO, MP1_EXT_BUCK_ISO); + + /* Finish to turn off MP0_CPUTOP */ + INFO("spmc: power off cluster %d successfully\n", cluster); +} + +/** + * Power on a cluster with specified index + * + * @cluster: the cluster index which to be powered on + */ +void spm_poweron_cluster(int cluster) +{ + uint32_t mask; + uint32_t pwr_rst_ctl; + + INFO("spmc: power on cluster %d\n", cluster); + + /* Start to turn on MP1_CPUTOP */ + + /* NOTE + * Following flow only for BIG core cluster. It was from + * application note but not covered in mtcmos_ctrl.c + */ + if (cluster) { + mmio_clrbits_32(MCUCFG_MP2_PWR_RST_CTL, SW_RST_B); + + /* CPU_EXT_BUCK_ISO[1]=0 */ + /* Set mp<n>_vproc_ext_off to 0 to release vproc isolation control */ + mmio_clrbits_32(SPM_CPU_EXT_BUCK_ISO, MP1_EXT_BUCK_ISO); + + /* NOTE + * Following flow only for BIG core cluster. It was from + * application note but not covered in mtcmos_ctrl.c + */ + pwr_rst_ctl = mmio_read_32(MCUCFG_MP2_PWR_RST_CTL); + mmio_write_32(MCUCFG_MP2_PWR_RST_CTL, + (pwr_rst_ctl | SW_RST_B) & ~TOPAON_APB_MASK); + } + + /* Set PWR_ON_2ND = 0 */ + mmio_clrbits_32(per_cluster(cluster, SPM_CLUSTER_PWR), + PWRCTRL_PWR_ON_2ND); + + /* Set PWR_RST_B = 1 */ + mmio_setbits_32(per_cluster(cluster, SPM_CLUSTER_PWR), + PWRCTRL_PWR_RST_B); + + /* Set PWR_CLK_DIS = 0 */ + mmio_clrbits_32(per_cluster(cluster, SPM_CLUSTER_PWR), + PWRCTRL_PWR_CLK_DIS); + + /* Set PWR_ON = 1 */ + mmio_setbits_32(per_cluster(cluster, SPM_CLUSTER_PWR), PWRCTRL_PWR_ON); + + /* Wait until MP1_CPUTOP_PWR_STA_MASK = 1 */ + while (!spm_get_cluster_powerstate(cluster)) + ; + + /* Release bus protect - step1 : 0 */ + mask = (cluster) ? MP1_CPUTOP_PROT_STEP1_0_MASK : + MP0_CPUTOP_PROT_STEP1_0_MASK; + mmio_write_32(INFRA_TOPAXI_PROTECTEN_1_CLR, mask); + + /* Finish to turn on MP1_CPUTOP */ + INFO("spmc: power on cluster %d successfully\n", cluster); +} |