From a49864593e083a5d0779fb9ca98e5a0f2053183d Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sun, 13 Apr 2008 19:42:19 -0400 Subject: allow ports to override go behavior Split the arch-specific logic out of the common go code and into a dedicated weak function called do_go_exec() that lives in cpu directories. This will need review from i386/nios people to make sure I didn't break them. --- common/cmd_boot.c | 33 +++++---------------------------- 1 file changed, 5 insertions(+), 28 deletions(-) (limited to 'common/cmd_boot.c') diff --git a/common/cmd_boot.c b/common/cmd_boot.c index 9d4f02659..d83f5af53 100644 --- a/common/cmd_boot.c +++ b/common/cmd_boot.c @@ -28,25 +28,11 @@ #include #include -#if defined(CONFIG_I386) -DECLARE_GLOBAL_DATA_PTR; -#endif - -static inline void go_setup(int argc, char *argv[]) +/* Allow ports to override the default behavior */ +__attribute__((weak)) +unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[]) { -#if defined(CONFIG_I386) - /* - * x86 does not use a dedicated register to pass the pointer - * to the global_data - */ - argv[0] = (char *)gd; - -#elif defined(CONFIG_BLACKFIN) - if (dcache_status ()) - dcache_disable (); - if (icache_status ()) - icache_disable (); -#endif + return entry (argc, argv); } int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) @@ -63,20 +49,11 @@ int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) printf ("## Starting application at 0x%08lX ...\n", addr); - go_setup(argc, argv); - -#if defined(CONFIG_NIOS) - /* - * Nios function pointers are address >> 1 - */ - addr >>= 1; -#endif - /* * pass address parameter as argv[0] (aka command name), * and all remaining args */ - rc = ((ulong (*)(int, char *[]))addr) (--argc, &argv[1]); + rc = do_go_exec ((void *)addr, argc - 1, argv + 1); if (rc != 0) rcode = 1; printf ("## Application terminated, rc = 0x%lX\n", rc); -- cgit v1.2.3