When enabling the LED support for Cubieboard2 (SUN7I) the uboot freezes in status_led_init() function. It uses a static global variable, while the .BSS is defined in DRAM area while that function is called before DRAM
Signed-off-by: Javad Rahimi <[email protected]> --- drivers/misc/status_led.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/misc/status_led.c b/drivers/misc/status_led.c index a6e9c03a02..7d30355423 100644 --- a/drivers/misc/status_led.c +++ b/drivers/misc/status_led.c @@ -23,6 +23,7 @@ typedef struct { int state; int period; int cnt; + int initialized:1; } led_dev_t; led_dev_t led_dev[] = { @@ -30,12 +31,14 @@ led_dev_t led_dev[] = { CONFIG_LED_STATUS_STATE, LED_STATUS_PERIOD, 0, + 0, }, #if defined(CONFIG_LED_STATUS1) { CONFIG_LED_STATUS_BIT1, CONFIG_LED_STATUS_STATE1, LED_STATUS_PERIOD1, 0, + 0, }, #endif #if defined(CONFIG_LED_STATUS2) @@ -43,6 +46,7 @@ led_dev_t led_dev[] = { CONFIG_LED_STATUS_STATE2, LED_STATUS_PERIOD2, 0, + 0, }, #endif #if defined(CONFIG_LED_STATUS3) @@ -50,6 +54,7 @@ led_dev_t led_dev[] = { CONFIG_LED_STATUS_STATE3, LED_STATUS_PERIOD3, 0, + 0, }, #endif #if defined(CONFIG_LED_STATUS4) @@ -57,6 +62,7 @@ led_dev_t led_dev[] = { CONFIG_LED_STATUS_STATE4, LED_STATUS_PERIOD4, 0, + 0, }, #endif #if defined(CONFIG_LED_STATUS5) @@ -64,22 +70,26 @@ led_dev_t led_dev[] = { CONFIG_LED_STATUS_STATE5, LED_STATUS_PERIOD5, 0, + 0, }, #endif }; #define MAX_LED_DEV (sizeof(led_dev)/sizeof(led_dev_t)) -static int status_led_init_done = 0; void status_led_init(void) { led_dev_t *ld; int i; - for (i = 0, ld = led_dev; i < MAX_LED_DEV; i++, ld++) + for (i = 0, ld = led_dev; i < MAX_LED_DEV; i++, ld++) { __led_init (ld->mask, ld->state); - status_led_init_done = 1; + ld->initialized = 1; + } + + return 0; + } void status_led_tick(ulong timestamp) @@ -87,11 +97,11 @@ void status_led_tick(ulong timestamp) led_dev_t *ld; int i; - if (!status_led_init_done) - status_led_init(); - for (i = 0, ld = led_dev; i < MAX_LED_DEV; i++, ld++) { + if (!ld->initialized) + continue; + if (ld->state != CONFIG_LED_STATUS_BLINKING) continue; @@ -110,11 +120,11 @@ void status_led_set(int led, int state) if (led < 0 || led >= MAX_LED_DEV) return; - if (!status_led_init_done) - status_led_init(); - ld = &led_dev[led]; + if (!ld->initialized) + return; + ld->state = state; if (state == CONFIG_LED_STATUS_BLINKING) { ld->cnt = 0; /* always start with full period */ -- 2.25.1
