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imx233: stop the watchdog before loading main firmware

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Change-Id: I0a13444d6788a09b0fc04ed1a5115cb2e5fe6f57
This commit is contained in:
Amaury Pouly 2014-02-10 22:28:46 +01:00
parent 34fb6906dd
commit 935c0ad14a
3 changed files with 10 additions and 0 deletions
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2
bootloader/imx233.c
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@ -209,6 +209,8 @@ void main(uint32_t arg, uint32_t addr)
kernel_entry = (void*) loadbuffer; kernel_entry = (void*) loadbuffer;
printf("Executing"); printf("Executing");
/* stop what was initialized to start from clean state */
system_prepare_fw_start();
disable_interrupt(IRQ_FIQ_STATUS); disable_interrupt(IRQ_FIQ_STATUS);
commit_discard_idcache(); commit_discard_idcache();
kernel_entry(); kernel_entry();

7
firmware/target/arm/imx233/system-imx233.c
View file

@ -197,6 +197,13 @@ void system_init(void)
#endif #endif
} }
void system_prepare_fw_start(void)
{
/* keep alive to get enough time, stop watchdog */
imx233_keep_alive();
imx233_rtc_enable_watchdog(false);
}
bool imx233_us_elapsed(uint32_t ref, unsigned us_delay) bool imx233_us_elapsed(uint32_t ref, unsigned us_delay)
{ {
uint32_t cur = HW_DIGCTL_MICROSECONDS; uint32_t cur = HW_DIGCTL_MICROSECONDS;

1
firmware/target/arm/imx233/system-target.h
View file

@ -47,6 +47,7 @@
#define CPUFREQ_MAX IMX233_CPUFREQ_454_MHz #define CPUFREQ_MAX IMX233_CPUFREQ_454_MHz
#define CPUFREQ_SLEEP IMX233_CPUFREQ_64_MHz #define CPUFREQ_SLEEP IMX233_CPUFREQ_64_MHz
void system_prepare_fw_start(void);
void udelay(unsigned us); void udelay(unsigned us);
bool imx233_us_elapsed(uint32_t ref, unsigned us_delay); bool imx233_us_elapsed(uint32_t ref, unsigned us_delay);
void imx233_reset_block(volatile uint32_t *block_reg); void imx233_reset_block(volatile uint32_t *block_reg);