From 7616e3687e447b5a838f472afb5275fe6a841f5b Mon Sep 17 00:00:00 2001 From: Sean Anderson Date: Mon, 28 Sep 2020 10:52:23 -0400 Subject: timer: Add a test for timer_timebase_fallback To test this function, sandbox CPU must set cpu_platdata.timebase_freq on bind. It also needs to expose a method to set the current cpu. I also make some most members of cpu_sandbox_ops static. On the timer side, the device tree property sandbox,timebase-frequency-fallback controls whether sandbox_timer_probe falls back to time_timebase_fallback or to SANDBOX_TIMER_RATE. Signed-off-by: Sean Anderson Reviewed-by: Simon Glass --- drivers/cpu/cpu_sandbox.c | 39 ++++++++++++++++++++++++++++++++------- 1 file changed, 32 insertions(+), 7 deletions(-) (limited to 'drivers/cpu/cpu_sandbox.c') diff --git a/drivers/cpu/cpu_sandbox.c b/drivers/cpu/cpu_sandbox.c index caa26e50f28..4ba0d1b99ef 100644 --- a/drivers/cpu/cpu_sandbox.c +++ b/drivers/cpu/cpu_sandbox.c @@ -8,14 +8,15 @@ #include #include -int cpu_sandbox_get_desc(const struct udevice *dev, char *buf, int size) +static int cpu_sandbox_get_desc(const struct udevice *dev, char *buf, int size) { snprintf(buf, size, "LEG Inc. SuperMegaUltraTurbo CPU No. 1"); return 0; } -int cpu_sandbox_get_info(const struct udevice *dev, struct cpu_info *info) +static int cpu_sandbox_get_info(const struct udevice *dev, + struct cpu_info *info) { info->cpu_freq = 42 * 42 * 42 * 42 * 42; info->features = 0x42424242; @@ -24,21 +25,29 @@ int cpu_sandbox_get_info(const struct udevice *dev, struct cpu_info *info) return 0; } -int cpu_sandbox_get_count(const struct udevice *dev) +static int cpu_sandbox_get_count(const struct udevice *dev) { return 42; } -int cpu_sandbox_get_vendor(const struct udevice *dev, char *buf, int size) +static int cpu_sandbox_get_vendor(const struct udevice *dev, char *buf, + int size) { snprintf(buf, size, "Languid Example Garbage Inc."); return 0; } -int cpu_sandbox_is_current(struct udevice *dev) +static const char *cpu_current = "cpu-test1"; + +void cpu_sandbox_set_current(const char *name) { - if (!strcmp(dev->name, "cpu-test1")) + cpu_current = name; +} + +static int cpu_sandbox_is_current(struct udevice *dev) +{ + if (!strcmp(dev->name, cpu_current)) return 1; return 0; @@ -52,7 +61,22 @@ static const struct cpu_ops cpu_sandbox_ops = { .is_current = cpu_sandbox_is_current, }; -int cpu_sandbox_probe(struct udevice *dev) +static int cpu_sandbox_bind(struct udevice *dev) +{ + int ret; + struct cpu_platdata *plat = dev_get_parent_platdata(dev); + + /* first examine the property in current cpu node */ + ret = dev_read_u32(dev, "timebase-frequency", &plat->timebase_freq); + /* if not found, then look at the parent /cpus node */ + if (ret) + ret = dev_read_u32(dev->parent, "timebase-frequency", + &plat->timebase_freq); + + return ret; +} + +static int cpu_sandbox_probe(struct udevice *dev) { return 0; } @@ -67,5 +91,6 @@ U_BOOT_DRIVER(cpu_sandbox) = { .id = UCLASS_CPU, .ops = &cpu_sandbox_ops, .of_match = cpu_sandbox_ids, + .bind = cpu_sandbox_bind, .probe = cpu_sandbox_probe, }; -- cgit v1.2.3