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ARM: SMP: get rid of references to poke_milo and Milo

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Milo is an old boot loader, which is no longer relevant for these
platforms.  References to it are misleading.  Move the code out
of poke_milo(), and remove references to milo in comments.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2010-12-02 19:10:01 +00:00
parent fd778f0ad7
commit aec66ba1f7
2 changed files with 12 additions and 39 deletions
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44
arch/arm/mach-realview/platsmp.c
View File

@ -99,14 +99,9 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
flush_cache_all();
/*
* XXX
*
* This is a later addition to the booting protocol: the
* bootMonitor now puts secondary cores into WFI, so
* poke_milo() no longer gets the cores moving; we need
* to send a soft interrupt to wake the secondary core.
* Use smp_cross_call() for this, since there's little
* point duplicating the code here
* Send the secondary CPU a soft interrupt, thereby causing
* the boot monitor to read the system wide flags register,
* and branch to the address found there.
*/
smp_cross_call(cpumask_of(cpu), 1);
@ -128,22 +123,6 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
return pen_release != -1 ? -ENOSYS : 0;
}
static void __init poke_milo(void)
{
/* nobody is to be released from the pen yet */
pen_release = -1;
/*
* Write the address of secondary startup into the system-wide flags
* register. The BootMonitor waits for this register to become
* non-zero.
*/
__raw_writel(BSYM(virt_to_phys(realview_secondary_startup)),
__io_address(REALVIEW_SYS_FLAGSSET));
mb();
}
/*
* Initialise the CPU possible map early - this describes the CPUs
* which may be present or become present in the system.
@ -189,13 +168,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
for (i = 0; i < max_cpus; i++)
set_cpu_present(i, true);
/*
* Initialise the SCU if there are more than one CPU and let
* them know where to start. Note that, on modern versions of
* MILO, the "poke" doesn't actually do anything until each
* individual core is sent a soft interrupt to get it out of
* WFI
*/
if (max_cpus > 1) {
/*
* Enable the local timer or broadcast device for the
@ -204,6 +176,14 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
percpu_timer_setup();
scu_enable(scu_base_addr());
poke_milo();
/*
* Write the address of secondary startup into the
* system-wide flags register. The BootMonitor waits
* until it receives a soft interrupt, and then the
* secondary CPU branches to this address.
*/
__raw_writel(BSYM(virt_to_phys(realview_secondary_startup)),
__io_address(REALVIEW_SYS_FLAGSSET));
}
}

7
arch/arm/mach-tegra/platsmp.c
View File

@ -148,13 +148,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
for (i = 0; i < max_cpus; i++)
set_cpu_present(i, true);
/*
* Initialise the SCU if there are more than one CPU and let
* them know where to start. Note that, on modern versions of
* MILO, the "poke" doesn't actually do anything until each
* individual core is sent a soft interrupt to get it out of
* WFI
*/
if (max_cpus > 1) {
percpu_timer_setup();
scu_enable(scu_base);