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target/xtensa: add clock input to xtensa CPU

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Create clock input for the xtensa CPU device and initialize its
frequency to the default core frequency specified in the config.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2021-10-03 14:31:47 -07:00
parent 8c48e36548
commit 9e377be1f0
3 changed files with 24 additions and 3 deletions
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7
target/xtensa/op_helper.c
View file

@ -38,12 +38,12 @@
void HELPER(update_ccount)(CPUXtensaState *env)
{
XtensaCPU *cpu = XTENSA_CPU(env_cpu(env));
uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
env->ccount_time = now;
env->sregs[CCOUNT] = env->ccount_base +
(uint32_t)((now - env->time_base) *
env->config->clock_freq_khz / 1000000);
(uint32_t)clock_ns_to_ticks(cpu->clock, now - env->time_base);
}
void HELPER(wsr_ccount)(CPUXtensaState *env, uint32_t v)
@ -59,6 +59,7 @@ void HELPER(wsr_ccount)(CPUXtensaState *env, uint32_t v)
void HELPER(update_ccompare)(CPUXtensaState *env, uint32_t i)
{
XtensaCPU *cpu = XTENSA_CPU(env_cpu(env));
uint64_t dcc;
qatomic_and(&env->sregs[INTSET],
@ -66,7 +67,7 @@ void HELPER(update_ccompare)(CPUXtensaState *env, uint32_t i)
HELPER(update_ccount)(env);
dcc = (uint64_t)(env->sregs[CCOMPARE + i] - env->sregs[CCOUNT] - 1) + 1;
timer_mod(env->ccompare[i].timer,
env->ccount_time + (dcc * 1000000) / env->config->clock_freq_khz);
env->ccount_time + clock_ticks_to_ns(cpu->clock, dcc));
env->yield_needed = 1;
}