From b1e9435b643043dd8fbd1fcc47309c6acb7b3c8e Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 11 Oct 2008 21:44:00 -0400 Subject: Blackfin: pass RETX to Linux Make sure we save the value of RETX at power on and then pass it on to the kernel so that it can nicely debug a "double-fault-caused-a-reset" crash. Signed-off-by: Mike Frysinger --- lib_blackfin/boot.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'lib_blackfin') diff --git a/lib_blackfin/boot.c b/lib_blackfin/boot.c index 47e27de30..537be2bd1 100644 --- a/lib_blackfin/boot.c +++ b/lib_blackfin/boot.c @@ -31,6 +31,8 @@ static char *make_command_line(void) return dest; } +extern ulong bfin_poweron_retx; + int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) { int (*appl) (char *cmdline); @@ -49,7 +51,12 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) cmdline = make_command_line(); icache_disable(); dcache_disable(); - (*appl) (cmdline); + asm __volatile__( + "RETX = %[retx];" + "CALL (%0);" + : + : "p"(appl), "q0"(cmdline), [retx] "d"(bfin_poweron_retx) + ); /* does not return */ return 1; -- cgit v1.2.3