diff options
| author | Mike Frysinger <[email protected]> | 2009-02-13 17:10:58 -0500 |
|---|---|---|
| committer | Mike Frysinger <[email protected]> | 2009-04-02 06:41:56 -0400 |
| commit | ad9073211ca9e62162a39851e082b8d07a662fb6 (patch) | |
| tree | ba4c415b936854441c8860f720d20858d3387021 /cpu/blackfin/initcode.c | |
| parent | 84a9dda324c3faa56be14449d7519b993d9397a9 (diff) | |
Blackfin: fix crash when booting from external memory
When testing a u-boot binary that hasn't been booted from the bootrom, we
have to make sure the bootstruct structure has sane storage space. If we
don't, the initcode will crash when it tries to dereference an invalid
pointer.
Signed-off-by: Mike Frysinger <[email protected]>
Diffstat (limited to 'cpu/blackfin/initcode.c')
| -rw-r--r-- | cpu/blackfin/initcode.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/cpu/blackfin/initcode.c b/cpu/blackfin/initcode.c index 7bd4b227e6d..3120447c517 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 |