diff options
Diffstat (limited to 'src/soc/nvidia/tegra132/psci.c')
-rw-r--r-- | src/soc/nvidia/tegra132/psci.c | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/src/soc/nvidia/tegra132/psci.c b/src/soc/nvidia/tegra132/psci.c deleted file mode 100644 index 3d6c2100a9..0000000000 --- a/src/soc/nvidia/tegra132/psci.c +++ /dev/null @@ -1,141 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2014 Google Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <arch/cpu.h> -#include <arch/io.h> -#include <arch/psci.h> -#include <soc/addressmap.h> -#include <soc/clk_rst.h> -#include <soc/cpu.h> -#include <soc/flow_ctrl.h> -#include <soc/power.h> - -#include <console/console.h> - -static void *cpu_on_entry_point; - -void psci_soc_init(uintptr_t cpu_on_entry) -{ - /* - * Stash secmon entry point for CPUs starting up. The 32-bit reset - * vector register is accessible in < EL3 so one has to attempt to - * plug the potential race for that register being changed out from - * under us. Therefore, we set the appropriate registers here, but - * it is also done on each CPU_ON request. - */ - cpu_on_entry_point = (void *)cpu_on_entry; - cpu_prepare_startup(cpu_on_entry_point); -} - -static size_t children_at_level(int parent_level, uint64_t mpidr) -{ - if (mpidr != 0) - return 0; - - /* T132 just has 2 cores. 0. Level 1 has 2 children at level 0. */ - switch (parent_level) { - case PSCI_AFFINITY_ROOT: - return 1; - case PSCI_AFFINITY_LEVEL_3: - return 1; - case PSCI_AFFINITY_LEVEL_2: - return 1; - case PSCI_AFFINITY_LEVEL_1: - return 2; - case PSCI_AFFINITY_LEVEL_0: - return 0; - default: - return 0; - } -} - -#define TEGRA132_PM_CORE_C7 0x3 - -static inline void tegra132_enter_sleep(unsigned long pmstate) -{ - asm volatile( - " isb\n" - " msr actlr_el1, %0\n" - " wfi\n" - : - : "r" (pmstate)); -} - -static void prepare_cpu_on(int cpu) -{ - uint32_t partid; - - partid = cpu ? POWER_PARTID_CE1 : POWER_PARTID_CE0; - - power_ungate_partition(partid); - flowctrl_write_cpu_halt(cpu, 0); -} - -static int cmd_prepare(struct psci_cmd *cmd) -{ - int ret; - - switch (cmd->type) { - case PSCI_CMD_ON: - prepare_cpu_on(cmd->target->cpu_state.ci->id); - ret = PSCI_RET_SUCCESS; - break; - case PSCI_CMD_OFF: - if (cmd->state_id != -1) { - ret = PSCI_RET_INVALID_PARAMETERS; - break; - } - cmd->state_id = TEGRA132_PM_CORE_C7; - ret = PSCI_RET_SUCCESS; - break; - default: - ret = PSCI_RET_NOT_SUPPORTED; - break; - } - return ret; -} - -static int cmd_commit(struct psci_cmd *cmd) -{ - int ret; - struct cpu_info *ci; - - ci = cmd->target->cpu_state.ci; - - switch (cmd->type) { - case PSCI_CMD_ON: - /* Take CPU out of reset */ - start_cpu_silent(ci->id, cpu_on_entry_point); - ret = PSCI_RET_SUCCESS; - break; - case PSCI_CMD_OFF: - flowctrl_cpu_off(ci->id); - tegra132_enter_sleep(cmd->state_id); - /* Never reach here */ - ret = PSCI_RET_NOT_SUPPORTED; - printk(BIOS_ERR, "t132 CPU%d PSCI_CMD_OFF fail\n", ci->id); - break; - default: - ret = PSCI_RET_NOT_SUPPORTED; - break; - } - return ret; -} - -struct psci_soc_ops soc_psci_ops = { - .children_at_level = &children_at_level, - .cmd_prepare = &cmd_prepare, - .cmd_commit = &cmd_commit, -}; |