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powerpc/pasemi: Add Nemo board device init code. 

Add routines for Nemo specific devices to init at boot time, these
being board level power-off and SB600's rtc.

Also add a run time variable to prevent these being activated
if we boot on a reference board.

Signed-off-by: Darren Stevens <darren@stevens-zone.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Darren Stevens 2018-08-19 21:23:57 +01:00 committed by Michael Ellerman
parent 0428a5f494
commit 656fdf3ad8
1 changed files with 34 additions and 0 deletions
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34
arch/powerpc/platforms/pasemi/setup.c
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@ -73,6 +73,40 @@ static void __noreturn pas_restart(char *cmd)
out_le32(reset_reg, 0x6000000);
}
#ifdef CONFIG_PPC_PASEMI_NEMO
void pas_shutdown(void)
{
/* Set the PLD bit that makes the SB600 think the power button is being pressed */
void __iomem *pld_map = ioremap(0xf5000000,4096);
while (1)
out_8(pld_map+7,0x01);
}
/* RTC platform device structure as is not in device tree */
static struct resource rtc_resource[] = {{
.name = "rtc",
.start = 0x70,
.end = 0x71,
.flags = IORESOURCE_IO,
}, {
.name = "rtc",
.start = 8,
.end = 8,
.flags = IORESOURCE_IRQ,
}};
static inline void nemo_init_rtc(void)
{
platform_device_register_simple("rtc_cmos", -1, rtc_resource, 2);
}
#else
static inline void nemo_init_rtc(void)
{
}
#endif
#ifdef CONFIG_SMP
static arch_spinlock_t timebase_lock;
static unsigned long timebase;