83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
|
/*
|
||
|
|
* (C) Copyright 2000-2009
|
||
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <bootm.h>
|
||
|
|
#include <command.h>
|
||
|
|
#include <lmb.h>
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* zImage booting support
|
||
|
|
*/
|
||
|
|
static int arcgo_start(cmd_tbl_t *cmdtp, int flag, int argc,
|
||
|
|
char * const argv[], unsigned int addr)
|
||
|
|
{
|
||
|
|
int index=0;
|
||
|
|
unsigned int base = 0x10000000;
|
||
|
|
unsigned int ctrl = 0x10000030;
|
||
|
|
unsigned int val;
|
||
|
|
|
||
|
|
/* Setup Linux kernel zImage entry point */
|
||
|
|
if (!argc) {
|
||
|
|
index = 0;
|
||
|
|
} else {
|
||
|
|
index = simple_strtoul(argv[1], NULL, 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (index > 0)
|
||
|
|
{
|
||
|
|
base += 0x40;
|
||
|
|
ctrl += 0x20;
|
||
|
|
}
|
||
|
|
|
||
|
|
*(volatile unsigned int *)base = 0x0f80200a;
|
||
|
|
*(volatile unsigned int *)(base + 0x4) = (addr >> 16) | ((addr & 0xffff) << 16);
|
||
|
|
*(volatile unsigned int *)(base + 0x8) = 0x00002020;
|
||
|
|
*(volatile unsigned int *)(base + 0xc) = 0x00000000;
|
||
|
|
|
||
|
|
val = *(volatile unsigned int *)ctrl;
|
||
|
|
val |= 4;
|
||
|
|
*(volatile unsigned int *)ctrl = val;
|
||
|
|
|
||
|
|
val |= 1;
|
||
|
|
*(volatile unsigned int *)ctrl = val;
|
||
|
|
|
||
|
|
val &= 0xfffffffe;
|
||
|
|
*(volatile unsigned int *)ctrl = val;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int do_arcgo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
||
|
|
{
|
||
|
|
ulong image_addr = 0;
|
||
|
|
|
||
|
|
argc--; argv++;
|
||
|
|
|
||
|
|
image_addr = simple_strtoul(argv[0], NULL, 16);
|
||
|
|
|
||
|
|
if (arcgo_start(cmdtp, flag, argc, argv, image_addr))
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_SYS_LONGHELP
|
||
|
|
static char arcgo_help_text[] =
|
||
|
|
"[addr [index]]\n"
|
||
|
|
" - boot ARC image stored in memory\n"
|
||
|
|
"\tThe argument 'index' is optional and specifies the index\n"
|
||
|
|
"\tof the ARC in memory. \n"
|
||
|
|
"";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
U_BOOT_CMD(
|
||
|
|
arcgo, CONFIG_SYS_MAXARGS, 1, do_arcgo,
|
||
|
|
"boot ARC image from memory", arcgo_help_text
|
||
|
|
);
|