| /* |
| * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch_helpers.h> |
| #include <assert.h> |
| #include <debug.h> |
| #include <delay_timer.h> |
| #include <mmio.h> |
| #include <platform.h> |
| #include <platform_def.h> |
| #include <psci.h> |
| #include <sunxi_mmap.h> |
| |
| #define SUNXI_WDOG0_CTRL_REG (SUNXI_WDOG_BASE + 0x0010) |
| #define SUNXI_WDOG0_CFG_REG (SUNXI_WDOG_BASE + 0x0014) |
| #define SUNXI_WDOG0_MODE_REG (SUNXI_WDOG_BASE + 0x0018) |
| |
| #include "sunxi_private.h" |
| |
| static void __dead2 sunxi_system_off(void) |
| { |
| /* Turn off all secondary CPUs */ |
| sunxi_disable_secondary_cpus(plat_my_core_pos()); |
| |
| ERROR("PSCI: Full shutdown not implemented, halting\n"); |
| wfi(); |
| panic(); |
| } |
| |
| static void __dead2 sunxi_system_reset(void) |
| { |
| /* Reset the whole system when the watchdog times out */ |
| mmio_write_32(SUNXI_WDOG0_CFG_REG, 1); |
| /* Enable the watchdog with the shortest timeout (0.5 seconds) */ |
| mmio_write_32(SUNXI_WDOG0_MODE_REG, (0 << 4) | 1); |
| /* Wait for twice the watchdog timeout before panicking */ |
| mdelay(1000); |
| |
| ERROR("PSCI: System reset failed\n"); |
| wfi(); |
| panic(); |
| } |
| |
| static plat_psci_ops_t sunxi_psci_ops = { |
| .system_off = sunxi_system_off, |
| .system_reset = sunxi_system_reset, |
| }; |
| |
| int plat_setup_psci_ops(uintptr_t sec_entrypoint, |
| const plat_psci_ops_t **psci_ops) |
| { |
| assert(psci_ops); |
| |
| *psci_ops = &sunxi_psci_ops; |
| |
| return 0; |
| } |