feat(versal-net): add SMP support for Versal NET
Add SMP support for Versal NET via register access.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Akshay Belsare <Akshay.Belsare@amd.com>
Change-Id: I46d73e2cd678ae720b5255722b6b0611c22659e8
diff --git a/plat/xilinx/versal_net/plat_psci.c b/plat/xilinx/versal_net/plat_psci.c
index 8acc8b5..299eca4 100644
--- a/plat/xilinx/versal_net/plat_psci.c
+++ b/plat/xilinx/versal_net/plat_psci.c
@@ -9,6 +9,7 @@
#include <assert.h>
#include <common/debug.h>
+#include <common/runtime_svc.h>
#include <lib/mmio.h>
#include <lib/psci/psci.h>
#include <plat/arm/common/plat_arm.h>
@@ -17,9 +18,135 @@
#include <plat_private.h>
+#define FUNCID_MASK U(0xffff)
+#define PM_RET_ERROR_NOFEATURE U(19)
+
+#define PM_IOCTL 34U
+
static uintptr_t versal_net_sec_entry;
+static void zynqmp_cpu_standby(plat_local_state_t cpu_state)
+{
+ dsb();
+ wfi();
+}
+
+static int32_t zynqmp_nopmu_pwr_domain_on(u_register_t mpidr)
+{
+ uint32_t cpu_id = plat_core_pos_by_mpidr(mpidr);
+ uint32_t cpu = cpu_id % PLATFORM_CORE_COUNT_PER_CLUSTER;
+ uint32_t cluster = cpu_id / PLATFORM_CORE_COUNT_PER_CLUSTER;
+ uintptr_t apu_cluster_base = 0, apu_pcli_base, apu_pcli_cluster = 0;
+ uintptr_t rst_apu_cluster = PSX_CRF + RST_APU0_OFFSET + (cluster * 0x4);
+
+ VERBOSE("%s: mpidr: 0x%lx, cpuid: %x, cpu: %x, cluster: %x\n",
+ __func__, mpidr, cpu_id, cpu, cluster);
+
+ if (cpu_id == -1) {
+ return PSCI_E_INTERN_FAIL;
+ }
+
+ if (platform_id == VERSAL_NET_SPP && cluster > 1) {
+ panic();
+ }
+
+ if (cluster > 3) {
+ panic();
+ }
+
+ apu_pcli_cluster = APU_PCLI + APU_PCLI_CLUSTER_OFFSET + (cluster * APU_PCLI_CLUSTER_STEP);
+ apu_cluster_base = APU_CLUSTER0 + (cluster * APU_CLUSTER_STEP);
+
+ /* Enable clock */
+ mmio_setbits_32(PSX_CRF + ACPU0_CLK_CTRL + (cluster * 0x4), ACPU_CLK_CTRL_CLKACT);
+
+ /* Enable cluster states */
+ mmio_setbits_32(apu_pcli_cluster + PCLI_PSTATE_OFFSET, PCLI_PSTATE_VAL_SET);
+ mmio_setbits_32(apu_pcli_cluster + PCLI_PREQ_OFFSET, PREQ_CHANGE_REQUEST);
+
+ /* assert core reset */
+ mmio_setbits_32(rst_apu_cluster, ((RST_APU_COLD_RESET|RST_APU_WARN_RESET) << cpu));
+
+ /* program RVBAR */
+ mmio_write_32(apu_cluster_base + APU_RVBAR_L_0 + (cpu << 3),
+ (uint32_t)versal_net_sec_entry);
+ mmio_write_32(apu_cluster_base + APU_RVBAR_H_0 + (cpu << 3),
+ versal_net_sec_entry >> 32);
+
+ /* de-assert core reset */
+ mmio_clrbits_32(rst_apu_cluster, ((RST_APU_COLD_RESET|RST_APU_WARN_RESET) << cpu));
+
+ /* clear cluster resets */
+ mmio_clrbits_32(rst_apu_cluster, RST_APU_CLUSTER_WARM_RESET);
+ mmio_clrbits_32(rst_apu_cluster, RST_APU_CLUSTER_COLD_RESET);
+
+ apu_pcli_base = APU_PCLI + (APU_PCLI_CPU_STEP * cpu) +
+ (APU_PCLI_CLUSTER_CPU_STEP * cluster);
+
+ mmio_write_32(apu_pcli_base + PCLI_PSTATE_OFFSET, PCLI_PSTATE_VAL_CLEAR);
+ mmio_write_32(apu_pcli_base + PCLI_PREQ_OFFSET, PREQ_CHANGE_REQUEST);
+
+ return PSCI_E_SUCCESS;
+}
+
+static void zynqmp_nopmu_pwr_domain_off(const psci_power_state_t *target_state)
+{
+}
+
+static void __dead2 zynqmp_nopmu_system_reset(void)
+{
+ while (1)
+ wfi();
+}
+
+static int32_t zynqmp_validate_ns_entrypoint(uint64_t ns_entrypoint)
+{
+ return PSCI_E_SUCCESS;
+}
+
+static void zynqmp_pwr_domain_suspend(const psci_power_state_t *target_state)
+{
+}
+
+static void zynqmp_pwr_domain_on_finish(const psci_power_state_t *target_state)
+{
+ plat_versal_net_gic_pcpu_init();
+ plat_versal_net_gic_cpuif_enable();
+}
+
+static void zynqmp_pwr_domain_suspend_finish(const psci_power_state_t *target_state)
+{
+}
+
+static void __dead2 zynqmp_system_off(void)
+{
+ while (1)
+ wfi();
+}
+
+static int32_t zynqmp_validate_power_state(uint32_t power_state, psci_power_state_t *req_state)
+{
+ return PSCI_E_SUCCESS;
+}
+
+static void zynqmp_get_sys_suspend_power_state(psci_power_state_t *req_state)
+{
+ req_state->pwr_domain_state[PSCI_CPU_PWR_LVL] = PLAT_MAX_OFF_STATE;
+ req_state->pwr_domain_state[1] = PLAT_MAX_OFF_STATE;
+}
+
static const struct plat_psci_ops versal_net_nopmc_psci_ops = {
+ .cpu_standby = zynqmp_cpu_standby,
+ .pwr_domain_on = zynqmp_nopmu_pwr_domain_on,
+ .pwr_domain_off = zynqmp_nopmu_pwr_domain_off,
+ .system_reset = zynqmp_nopmu_system_reset,
+ .validate_ns_entrypoint = zynqmp_validate_ns_entrypoint,
+ .pwr_domain_suspend = zynqmp_pwr_domain_suspend,
+ .pwr_domain_on_finish = zynqmp_pwr_domain_on_finish,
+ .pwr_domain_suspend_finish = zynqmp_pwr_domain_suspend_finish,
+ .system_off = zynqmp_system_off,
+ .validate_power_state = zynqmp_validate_power_state,
+ .get_sys_suspend_power_state = zynqmp_get_sys_suspend_power_state,
};
/*******************************************************************************
@@ -36,3 +163,59 @@
return 0;
}
+
+int sip_svc_setup_init(void)
+{
+ return 0;
+}
+
+static int32_t no_pm_ioctl(uint32_t device_id, uint32_t ioctl_id,
+ uint32_t arg1, uint32_t arg2)
+{
+ VERBOSE("%s: ioctl_id: %x, arg1: %x\n", __func__, ioctl_id, arg1);
+ if (ioctl_id == IOCTL_OSPI_MUX_SELECT) {
+ mmio_write_32(SLCR_OSPI_QSPI_IOU_AXI_MUX_SEL, arg1);
+ return 0;
+ }
+ return PM_RET_ERROR_NOFEATURE;
+}
+
+static uint64_t no_pm_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
+ uint64_t x4, void *cookie, void *handle, uint64_t flags)
+{
+ int32_t ret;
+ uint32_t arg[4], api_id;
+
+ arg[0] = (uint32_t)x1;
+ arg[1] = (uint32_t)(x1 >> 32);
+ arg[2] = (uint32_t)x2;
+ arg[3] = (uint32_t)(x2 >> 32);
+
+ api_id = smc_fid & FUNCID_NUM_MASK;
+ VERBOSE("%s: smc_fid: %x, api_id=0x%x\n", __func__, smc_fid, api_id);
+
+ switch (smc_fid & FUNCID_MASK) {
+ case PM_IOCTL:
+ {
+ ret = no_pm_ioctl(arg[0], arg[1], arg[2], arg[3]);
+ SMC_RET1(handle, (uint64_t)ret);
+ }
+ case PM_GET_CHIPID:
+ {
+ uint32_t idcode, version;
+
+ idcode = mmio_read_32(PMC_TAP);
+ version = mmio_read_32(PMC_TAP_VERSION);
+ SMC_RET2(handle, ((uint64_t)idcode << 32), version);
+ }
+ default:
+ WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
+ SMC_RET1(handle, SMC_UNK);
+ }
+}
+
+uint64_t smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4,
+ void *cookie, void *handle, uint64_t flags)
+{
+ return no_pm_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags);
+}