[U-Boot] [PATCH v3 2/8] MIPS: bootm: optimize kernel entry call
Daniel Schwierzeck
daniel.schwierzeck at gmail.com
Sun Aug 11 21:39:02 CEST 2013
Fix signature of kernel entry function. Mark the kernel entry
with __noreturn for better code optimisation.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck at gmail.com>
---
Changes in v3: None
Changes in v2: None
arch/mips/lib/bootm.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c
index e7aa11a..692f7dc 100644
--- a/arch/mips/lib/bootm.c
+++ b/arch/mips/lib/bootm.c
@@ -69,20 +69,17 @@ static void boot_prep_linux(bootm_headers_t *images)
static void boot_jump_linux(bootm_headers_t *images)
{
- void (*theKernel) (int, char **, char **, int *);
+ typedef void __noreturn (*kernel_entry_t)(int, ulong, ulong, ulong);
+ kernel_entry_t kernel = (kernel_entry_t) images->ep;
- /* find kernel entry point */
- theKernel = (void (*)(int, char **, char **, int *))images->ep;
-
- debug("## Transferring control to Linux (at address %08lx) ...\n",
- (ulong) theKernel);
+ debug("## Transferring control to Linux (at address %p) ...\n", kernel);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
/* we assume that the kernel is in place */
printf("\nStarting kernel ...\n\n");
- theKernel(linux_argc, linux_argv, linux_env, 0);
+ kernel(linux_argc, (ulong)linux_argv, (ulong)linux_env, 0);
}
int do_bootm_linux(int flag, int argc, char * const argv[],
--
1.8.1.2
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