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authorMike Frysinger <vapier@gentoo.org>2008-04-13 19:42:18 -0400
committerWolfgang Denk <wd@denx.de>2008-04-18 00:30:42 -0700
commit017e9b7925f74878d0e9475388cca9bda5ef9482 (patch)
treecc4fe9915479ef83c8f1ba80893b7bd86713d6de /common
parenta4b46ed6b3502335c3f3a5d672abe0bcb44f20b7 (diff)
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allow ports to override bootelf behavior
Change the bootelf setup function into a dedicated weak function called do_bootelf_exec. This way ports can control the behavior however they like before/after calling the ELF entry point.
Diffstat (limited to 'common')
-rw-r--r--common/cmd_elf.c33
1 files changed, 21 insertions, 12 deletions
diff --git a/common/cmd_elf.c b/common/cmd_elf.c
index 4683554..62e5e76 100644
--- a/common/cmd_elf.c
+++ b/common/cmd_elf.c
@@ -27,23 +27,34 @@ DECLARE_GLOBAL_DATA_PTR;
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif
-static inline void bootelf_setup(int argc, char *argv[])
+int valid_elf_image (unsigned long addr);
+unsigned long load_elf_image (unsigned long addr);
+
+/* Allow ports to override the default behavior */
+__attribute__((weak))
+unsigned long do_bootelf_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
{
+ unsigned long ret;
+
/*
* QNX images require the data cache is disabled.
* Data cache is already flushed, so just turn it off.
*/
- if (dcache_status ())
+ int dcache = dcache_status ();
+ if (dcache)
dcache_disable ();
-#ifdef CONFIG_BLACKFIN
- if (icache_status ())
- icache_disable ();
-#endif
-}
+ /*
+ * pass address parameter as argv[0] (aka command name),
+ * and all remaining args
+ */
+ ret = entry (argc, argv);
-int valid_elf_image (unsigned long addr);
-unsigned long load_elf_image (unsigned long addr);
+ if (dcache)
+ dcache_enable ();
+
+ return ret;
+}
/* ======================================================================
* Interpreter command to boot an arbitrary ELF image from memory.
@@ -68,13 +79,11 @@ int do_bootelf (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
printf ("## Starting application at 0x%08lx ...\n", addr);
- bootelf_setup(argc, argv);
-
/*
* pass address parameter as argv[0] (aka command name),
* and all remaining args
*/
- rc = ((ulong (*)(int, char *[])) addr) (--argc, &argv[1]);
+ rc = do_bootelf_exec ((void *)addr, argc - 1, argv + 1);
if (rc != 0)
rcode = 1;