This patch is just a quick work up to see how to handle a particular
problem I've got. The idea is that I want finer control over what happens
when I 'go' to piece of code. The idea is it looks more like a native
function call than the current go which is more main() like.
The calling convention/num of args is specific to the PPC ABI.
I'm looking for suggestions, better names, etc.
thanks
- k
diff --git a/common/cmd_boot.c b/common/cmd_boot.c
index e68f16f..5b0bbe4 100644
--- a/common/cmd_boot.c
+++ b/common/cmd_boot.c
@@ -32,6 +32,42 @@
DECLARE_GLOBAL_DATA_PTR;
#endif
+int do_go_raw (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr, i;
+ ulong r[8] = { 0 };
+
+ void (*img)(ulong, ulong, ulong, ulong,
+ ulong, ulong, ulong, ulong);
+
+ if ((argc < 2) || (argc > 9)) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ addr = simple_strtoul(argv[1], NULL, 16);
+
+ img = (void (*)(ulong, ulong, ulong, ulong,
+ ulong, ulong, ulong, ulong)) addr;
+
+ for (i = 2; i < argc; i++)
+ r[i-2] = simple_strtoul(argv[i], NULL, 16);
+
+ (*img)(r[0], r[1], r[2], r[3], r[4], r[5], r[6], r[7]);
+ /* does not return */
+
+ return 0;
+}
+
+/* -------------------------------------------------------------------- */
+
+U_BOOT_CMD(
+ go_raw, CFG_MAXARGS, 1, do_go_raw,
+ "go_raw - start application at address 'addr'\n",
+ "addr [arg ...]\n - start application at address 'addr'\n"
+ " passing 'arg' as arguments\n"
+);
+
int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
ulong addr, rc;
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