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watchdog: Handle SPL build with watchdog disabled

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This patch adds some checks, so that the watchdog can be enabled in main
U-Boot proper but can be disabled in SPL.

This will be used by some AT91SAM based boards, which might enable the
watchdog in the main U-Boot proper and not in SPL. It will be enabled in
SPL by default there, so no need to configure it there. This approach
saves some space in SPL.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Tested on the taurus board:
Tested-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Stefan Roese 2019-04-02 10:57:18 +02:00 committed by Eugen Hristev
parent e567dfb213
commit 7fbd42f5af
1 changed files with 8 additions and 2 deletions
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6
include/watchdog.h
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@ -50,11 +50,17 @@ int init_func_watchdog_reset(void);
#if defined(CONFIG_WATCHDOG)
#if defined(__ASSEMBLY__)
#define WATCHDOG_RESET bl watchdog_reset
#else
/* Don't require the watchdog to be enabled in SPL */
#if defined(CONFIG_SPL_BUILD) && \
!defined(CONFIG_SPL_WATCHDOG_SUPPORT)
#define WATCHDOG_RESET() {}
#else
extern void watchdog_reset(void);
#define WATCHDOG_RESET watchdog_reset
#endif
#endif
#else
/*
* No hardware or software watchdog.