1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2010
3*4882a593Smuzhiyun * Renesas Solutions Corp.
4*4882a593Smuzhiyun * Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun /*
10*4882a593Smuzhiyun * Linux SuperH zImage loading and boot
11*4882a593Smuzhiyun */
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <common.h>
14*4882a593Smuzhiyun #include <asm/io.h>
15*4882a593Smuzhiyun #include <asm/zimage.h>
16*4882a593Smuzhiyun
do_sh_zimageboot(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])17*4882a593Smuzhiyun int do_sh_zimageboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun ulong (*zboot_entry)(int, char * const []) = NULL;
20*4882a593Smuzhiyun char *s0, *s1;
21*4882a593Smuzhiyun unsigned char *param = NULL;
22*4882a593Smuzhiyun char *cmdline;
23*4882a593Smuzhiyun char *bootargs;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun disable_interrupts();
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun if (argc >= 3) {
28*4882a593Smuzhiyun /* argv[1] holds the address of the zImage */
29*4882a593Smuzhiyun s0 = argv[1];
30*4882a593Smuzhiyun /* argv[2] holds the address of zero page */
31*4882a593Smuzhiyun s1 = argv[2];
32*4882a593Smuzhiyun } else {
33*4882a593Smuzhiyun goto exit;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun if (s0)
37*4882a593Smuzhiyun zboot_entry = (ulong (*)(int, char * const []))simple_strtoul(s0, NULL, 16);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun /* empty_zero_page */
40*4882a593Smuzhiyun if (s1)
41*4882a593Smuzhiyun param = (unsigned char*)simple_strtoul(s1, NULL, 16);
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun /* Linux kernel command line */
44*4882a593Smuzhiyun cmdline = (char *)param + COMMAND_LINE;
45*4882a593Smuzhiyun bootargs = env_get("bootargs");
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun /* Clear zero page */
48*4882a593Smuzhiyun /* cppcheck-suppress nullPointer */
49*4882a593Smuzhiyun memset(param, 0, 0x1000);
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun /* Set commandline */
52*4882a593Smuzhiyun strcpy(cmdline, bootargs);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun /* Boot */
55*4882a593Smuzhiyun zboot_entry(0, NULL);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun exit:
58*4882a593Smuzhiyun return -1;
59*4882a593Smuzhiyun }
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun U_BOOT_CMD(
62*4882a593Smuzhiyun zimageboot, 3, 0, do_sh_zimageboot,
63*4882a593Smuzhiyun "Boot zImage for Renesas SH",
64*4882a593Smuzhiyun ""
65*4882a593Smuzhiyun );
66