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/*
* U-Boot - boot.c - misc boot helper functions
*
* Copyright (c) 2005-2008 Analog Devices Inc.
*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Licensed under the GPL-2 or later.
*/
#include <common.h>
#include <command.h>
#include <image.h>
#include <asm/blackfin.h>
#ifdef SHARED_RESOURCES
extern void swap_to(int device_id);
#endif
#ifdef CONFIG_VIDEO
extern void video_stop(void);
#endif
static char *make_command_line(void)
{
char *dest = (char *)CONFIG_LINUX_CMDLINE_ADDR;
char *bootargs = getenv("bootargs");
if (bootargs == NULL)
return NULL;
strncpy(dest, bootargs, CONFIG_LINUX_CMDLINE_SIZE);
dest[CONFIG_LINUX_CMDLINE_SIZE - 1] = 0;
return dest;
}
extern ulong bfin_poweron_retx;
int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images)
{
int (*appl) (char *cmdline);
char *cmdline;
if (flag & BOOTM_STATE_OS_PREP)
return 0;
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
return 1;
#ifdef SHARED_RESOURCES
swap_to(FLASH);
#endif
#ifdef CONFIG_VIDEO
/* maybe this should be standardized and moved to bootm ... */
video_stop();
#endif
appl = (int (*)(char *))images->ep;
printf("Starting Kernel at = %p\n", appl);
cmdline = make_command_line();
icache_disable();
dcache_disable();
asm __volatile__(
"RETX = %[retx];"
"CALL (%0);"
:
: "p"(appl), "q0"(cmdline), [retx] "d"(bfin_poweron_retx)
);
/* does not return */
return 1;
}
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