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Get device-specific code out of init_threads and add core_thread_init to be implemented for multicore devices.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17000 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2008-04-06 22:08:36 +00:00
parent c2a01fdc7a
commit 9ba80c9641
1 changed files with 37 additions and 14 deletions
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51
firmware/thread.c
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@ -733,6 +733,31 @@ static void __attribute__((naked))
);
(void)core; (void)thread;
}
/*---------------------------------------------------------------------------
* Do any device-specific inits for the threads and synchronize the kernel
* initializations.
*---------------------------------------------------------------------------
*/
static void core_thread_init(unsigned int core)
{
if (core == CPU)
{
/* Wake up coprocessor and let it initialize kernel and threads */
#ifdef CPU_PP502x
MBX_MSG_CLR = 0x3f;
#endif
COP_CTL = PROC_WAKE;
/* Sleep until COP has finished */
CPU_CTL = PROC_SLEEP;
nop; nop; nop;
}
else
{
/* Wake the CPU and return */
CPU_CTL = PROC_WAKE;
}
}
#endif /* NUM_CORES */
#elif CONFIG_CPU == S3C2440
@ -2955,24 +2980,22 @@ void init_threads(void)
thread->stack = stackbegin;
thread->stack_size = (uintptr_t)stackend - (uintptr_t)stackbegin;
#if NUM_CORES > 1 /* This code path will not be run on single core targets */
/* TODO: HAL interface for this */
/* Wake up coprocessor and let it initialize kernel and threads */
#ifdef CPU_PP502x
MBX_MSG_CLR = 0x3f;
#endif
COP_CTL = PROC_WAKE;
/* Sleep until finished */
CPU_CTL = PROC_SLEEP;
nop; nop; nop; nop;
/* Wait for other processors to finish their inits since create_thread
* isn't safe to call until the kernel inits are done. The first
* threads created in the system must of course be created by CPU. */
core_thread_init(CPU);
}
else
{
/* Initial stack is the COP idle stack */
thread->stack = cop_idlestackbegin;
/* Initial stack is the idle stack */
thread->stack = idle_stacks[core];
thread->stack_size = IDLE_STACK_SIZE;
/* Get COP safely primed inside switch_thread where it will remain
* until a thread actually exists on it */
CPU_CTL = PROC_WAKE;
/* After last processor completes, it should signal all others to
* proceed or may signal the next and call thread_exit(). The last one
* to finish will signal CPU. */
core_thread_init(core);
/* Other cores do not have a main thread - go idle inside switch_thread
* until a thread can run on the core. */
thread_exit();
#endif /* NUM_CORES */
}