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-rw-r--r--bootloader/imx233.c2
-rw-r--r--firmware/target/arm/imx233/system-imx233.c7
-rw-r--r--firmware/target/arm/imx233/system-target.h1
3 files changed, 10 insertions, 0 deletions
diff --git a/bootloader/imx233.c b/bootloader/imx233.c
index d115389985..6dc503bb16 100644
--- a/bootloader/imx233.c
+++ b/bootloader/imx233.c
@@ -209,6 +209,8 @@ void main(uint32_t arg, uint32_t addr)
kernel_entry = (void*) loadbuffer;
printf("Executing");
+ /* stop what was initialized to start from clean state */
+ system_prepare_fw_start();
disable_interrupt(IRQ_FIQ_STATUS);
commit_discard_idcache();
kernel_entry();
diff --git a/firmware/target/arm/imx233/system-imx233.c b/firmware/target/arm/imx233/system-imx233.c
index 5298f7cff9..d5ed7fc774 100644
--- a/firmware/target/arm/imx233/system-imx233.c
+++ b/firmware/target/arm/imx233/system-imx233.c
@@ -197,6 +197,13 @@ void system_init(void)
#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)
{
uint32_t cur = HW_DIGCTL_MICROSECONDS;
diff --git a/firmware/target/arm/imx233/system-target.h b/firmware/target/arm/imx233/system-target.h
index 6272cf7a85..e77b5dc1b8 100644
--- a/firmware/target/arm/imx233/system-target.h
+++ b/firmware/target/arm/imx233/system-target.h
@@ -47,6 +47,7 @@
#define CPUFREQ_MAX IMX233_CPUFREQ_454_MHz
#define CPUFREQ_SLEEP IMX233_CPUFREQ_64_MHz
+void system_prepare_fw_start(void);
void udelay(unsigned us);
bool imx233_us_elapsed(uint32_t ref, unsigned us_delay);
void imx233_reset_block(volatile uint32_t *block_reg);