diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/blackfin/initcode.c | 9 | ||||
| -rw-r--r-- | cpu/blackfin/serial.c | 4 | ||||
| -rw-r--r-- | cpu/blackfin/start.S | 2 |
3 files changed, 11 insertions, 4 deletions
diff --git a/cpu/blackfin/initcode.c b/cpu/blackfin/initcode.c index 7bd4b22..3120447 100644 --- a/cpu/blackfin/initcode.c +++ b/cpu/blackfin/initcode.c @@ -249,6 +249,8 @@ static inline void serial_putc(char c) BOOTROM_CALLED_FUNC_ATTR void initcode(ADI_BOOT_DATA *bootstruct) { + ADI_BOOT_DATA bootstruct_scratch; + /* Save the clock pieces that are used in baud rate calculation */ unsigned int sdivB, divB, vcoB; serial_init(); @@ -260,6 +262,13 @@ void initcode(ADI_BOOT_DATA *bootstruct) serial_putc('A'); + /* If the bootstruct is NULL, then it's because we're loading + * dynamically and not via LDR (bootrom). So set the struct to + * some scratch space. + */ + if (!bootstruct) + bootstruct = &bootstruct_scratch; + #ifdef CONFIG_HW_WATCHDOG # ifndef CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE # define CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE 20000 diff --git a/cpu/blackfin/serial.c b/cpu/blackfin/serial.c index 42534bd..3861955 100644 --- a/cpu/blackfin/serial.c +++ b/cpu/blackfin/serial.c @@ -115,10 +115,6 @@ void serial_putc(const char c) SSYNC(); WATCHDOG_RESET(); - - /* wait for the byte to be shifted over the line */ - while (!(uart_lsr_read() & TEMT)) - continue; } int serial_tstc(void) diff --git a/cpu/blackfin/start.S b/cpu/blackfin/start.S index 506fea5..7cbd632 100644 --- a/cpu/blackfin/start.S +++ b/cpu/blackfin/start.S @@ -131,6 +131,7 @@ ENTRY(_start) r3.h = 0x2000; cc = r5 < r3 (iu); if cc jump .Ldma_and_reprogram; + r0 = 0 (x); /* set bootstruct to NULL */ call _initcode; jump .Lprogrammed; @@ -147,6 +148,7 @@ ENTRY(_start) r1 = r1 + r5; /* ... to current (not load) address of initcode */ p3 = r0; call _dma_memcpy_nocache; + r0 = 0 (x); /* set bootstruct to NULL */ call (p3); /* Since we reprogrammed SCLK, we need to update the serial divisor */ |