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Commit 7781e61b authored by Florian Fainelli's avatar Florian Fainelli Committed by Arnd Bergmann
Browse files

ARM: ep93xx: Disable TS-72xx watchdog before uncompressing 



The TS-72xx/73xx boards have a CPLD watchdog which is configured to
reset the board after 8 seconds, if the kernel is large enough that this
takes about this time to decompress the kernel, we will encounter a
spurious reboot.

Do not pull ts72xx.h, but instead locally define what we need to disable
the watchdog.

Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 4b483ed0

arch/arm/mach-ep93xx/include/mach/uncompress.h

+12 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
 */



#include <mach/ep93xx-regs.h>

#include <asm/mach-types.h>



static unsigned char __raw_readb(unsigned int ptr)

{
@@ -75,8 +76,19 @@ static void ethernet_reset(void) 
		;

}



#define TS72XX_WDT_CONTROL_PHYS_BASE	0x23800000

#define TS72XX_WDT_FEED_PHYS_BASE	0x23c00000

#define TS72XX_WDT_FEED_VAL		0x05



static void __maybe_unused ts72xx_watchdog_disable(void)

{

	__raw_writeb(TS72XX_WDT_FEED_VAL, TS72XX_WDT_FEED_PHYS_BASE);

	__raw_writeb(0, TS72XX_WDT_CONTROL_PHYS_BASE);

}



static void arch_decomp_setup(void)

{

	if (machine_is_ts72xx())

		ts72xx_watchdog_disable();

	ethernet_reset();

}