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-rw-r--r--cpu/blackfin/initcode.c9
-rw-r--r--cpu/blackfin/start.S2
2 files changed, 11 insertions, 0 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/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 */