mediatek: mt8183: support CPU hotplug
- Add DCM driver
- Add SPMC driver
- Implement core and cluster power on/off handlers
Change-Id: I902002f8ea6f98fd73bf259188162b10d3939c72
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);
+}