/** Handle loader connection.
*
* Receive and carry out commands (of which the last one should be
* to execute the loaded program).
*/
static void ldr_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
{
/* Already have a connection? */
if (connected) {
async_answer_0(iid, ELIMIT);
return;
}
connected = true;
/* Accept the connection */
async_answer_0(iid, EOK);
/* Ignore parameters, the connection is already open */
(void) icall;
while (true) {
int retval;
ipc_call_t call;
ipc_callid_t callid = async_get_call(&call);
if (!IPC_GET_IMETHOD(call))
exit(0);
switch (IPC_GET_IMETHOD(call)) {
case LOADER_GET_TASKID:
ldr_get_taskid(callid, &call);
continue;
case LOADER_SET_CWD:
ldr_set_cwd(callid, &call);
continue;
case LOADER_SET_PATHNAME:
ldr_set_pathname(callid, &call);
continue;
case LOADER_SET_ARGS:
ldr_set_args(callid, &call);
continue;
case LOADER_SET_FILES:
ldr_set_files(callid, &call);
continue;
case LOADER_LOAD:
ldr_load(callid, &call);
continue;
case LOADER_RUN:
ldr_run(callid, &call);
/* Not reached */
default:
retval = EINVAL;
break;
}
async_answer_0(callid, retval);
}
}
/*
* the bootldr command loads an address, checks to see if there
* is a Boot stream that the on-chip BOOTROM can understand,
* and loads it via the BOOTROM Callback. It is possible
* to also add booting from SPI, or TWI, but this function does
* not currently support that.
*/
int do_bootldr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
void *addr;
/* Get the address */
if (argc < 2)
addr = (void *)load_addr;
else
addr = (void *)simple_strtoul(argv[1], NULL, 16);
/* Check if it is a LDR file */
if (ldr_valid_signature(addr)) {
printf("## Booting ldr image at 0x%p ...\n", addr);
ldr_load(addr);
icache_disable();
dcache_disable();
ldr_exec(addr);
} else
printf("## No ldr image at address 0x%p\n", addr);
return 0;
}
