feat(ast2700): add Aspeed AST2700 platform support
Aspeed AST2700 is a quad-core SoC with ARM Cortex-A35 integrated.
This patch adds the initial platform support for AST2700 and also
updates the documents.
Change-Id: I1796f7aae5ed2d1799e91fabb8949607959cd9b3
Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
diff --git a/plat/aspeed/ast2700/plat_pm.c b/plat/aspeed/ast2700/plat_pm.c
new file mode 100644
index 0000000..8e69243
--- /dev/null
+++ b/plat/aspeed/ast2700/plat_pm.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2023, Aspeed Technology Inc.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <common/debug.h>
+#include <drivers/arm/gicv3.h>
+#include <drivers/console.h>
+#include <lib/mmio.h>
+#include <lib/psci/psci.h>
+#include <plat/common/platform.h>
+
+static uintptr_t sec_ep;
+
+static int plat_pwr_domain_on(u_register_t mpidr)
+{
+ unsigned int cpu = plat_core_pos_by_mpidr(mpidr);
+ uintptr_t ep_reg;
+
+ switch (cpu) {
+ case 1U:
+ ep_reg = SCU_CPU_SMP_EP1;
+ break;
+ case 2U:
+ ep_reg = SCU_CPU_SMP_EP2;
+ break;
+ case 3U:
+ ep_reg = SCU_CPU_SMP_EP3;
+ break;
+ default:
+ return PSCI_E_INVALID_PARAMS;
+ }
+
+ mmio_write_64(ep_reg, sec_ep);
+
+ dsbsy();
+
+ sev();
+
+ return PSCI_E_SUCCESS;
+}
+
+static void plat_pwr_domain_on_finish(const psci_power_state_t *target_state)
+{
+ gicv3_rdistif_init(plat_my_core_pos());
+ gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+static const plat_psci_ops_t plat_psci_ops = {
+ .pwr_domain_on = plat_pwr_domain_on,
+ .pwr_domain_on_finish = plat_pwr_domain_on_finish,
+};
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+ const plat_psci_ops_t **psci_ops)
+{
+ sec_ep = sec_entrypoint;
+ *psci_ops = &plat_psci_ops;
+
+ return 0;
+}