Source of psci.c - linux-imx - PHYTEC BitBucket (Stash)

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 */
static int resident_cpu = -1;
​
bool psci_tos_resident_on(int cpu)
{
    return cpu == resident_cpu;
}
​
struct psci_operations psci_ops = {
    .conduit = PSCI_CONDUIT_NONE,
    .smccc_version = SMCCC_VERSION_1_0,
};
​
typedef unsigned long (psci_fn)(unsigned long, unsigned long,
                unsigned long, unsigned long);
static psci_fn *invoke_psci_fn;
​
enum psci_function {
    PSCI_FN_CPU_SUSPEND,
    PSCI_FN_CPU_ON,
    PSCI_FN_CPU_OFF,
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            cpuid);
        return;
    }
​
    cpu = get_logical_index(cpuid);
    resident_cpu = cpu >= 0 ? cpu : -1;
​
    pr_info("Trusted OS resident on physical CPU 0x%lx\n", cpuid);
}
​
static void __init psci_init_smccc(void)
{
    u32 ver = ARM_SMCCC_VERSION_1_0;
    int feature;
​
    feature = psci_features(ARM_SMCCC_VERSION_FUNC_ID);
​
    if (feature != PSCI_RET_NOT_SUPPORTED) {
        u32 ret;
        ret = invoke_psci_fn(ARM_SMCCC_VERSION_FUNC_ID, 0, 0, 0);
        if (ret == ARM_SMCCC_VERSION_1_1) {
            psci_ops.smccc_version = SMCCC_VERSION_1_1;
            ver = ret;
        }
    }
​
    /*
     * Conveniently, the SMCCC and PSCI versions are encoded the
     * same way. No, this isn't accidental.
     */
    pr_info("SMC Calling Convention v%d.%d\n",
        PSCI_VERSION_MAJOR(ver), PSCI_VERSION_MINOR(ver));
​
}
​
static void __init psci_0_2_set_functions(void)
{
    pr_info("Using standard PSCI v0.2 function IDs\n");
    psci_ops.get_version = psci_get_version;
​
    psci_function_id[PSCI_FN_CPU_SUSPEND] =
                    PSCI_FN_NATIVE(0_2, CPU_SUSPEND);
    psci_ops.cpu_suspend = psci_cpu_suspend;
​
    psci_function_id[PSCI_FN_CPU_OFF] = PSCI_0_2_FN_CPU_OFF;
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    if (PSCI_VERSION_MAJOR(ver) == 0 && PSCI_VERSION_MINOR(ver) < 2) {
        pr_err("Conflicting PSCI version detected.\n");
        return -EINVAL;
    }
​
    psci_0_2_set_functions();
​
    psci_init_migrate();
​
    if (PSCI_VERSION_MAJOR(ver) >= 1) {
        psci_init_smccc();
        psci_init_cpu_suspend();
        psci_init_system_suspend();
    }
​
    return 0;
}
​
typedef int (*psci_initcall_t)(const struct device_node *);
​
/*