summaryrefslogtreecommitdiffstats
path: root/board/esd/common/cmd_loadpci.c
blob: 87da27db1021c0ce0534b2c6f1ff013aa03f58f5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/*
 * (C) Copyright 2005-2008
 * Matthias Fuchs, esd GmbH Germany, matthias.fuchs@esd-electronics.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#if !defined(CONFIG_440)
#include <asm/4xx_pci.h>
#endif

#if defined(CONFIG_CMD_BSP)

extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
extern int do_source (cmd_tbl_t *, int, int, char *[]);

#define ADDRMASK 0xfffff000

/*
 * Command loadpci: wait for signal from host and boot image.
 */
int do_loadpci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	u32 *ptr = 0;
	int count = 0;
	int count2 = 0;
	char addr[16];
	char str[] = "\\|/-";
	char *local_args[2];
	u32 la, ptm1la;

#if defined(CONFIG_440)
	ptm1la = in32r(PCIL0_PTM1LA);
#else
	ptm1la = in32r(PTM1LA);
#endif
	while(1) {
		/*
		 * Mark sync address
		 */
		ptr = (u32 *)ptm1la;
		memset(ptr, 0, 0x20);

		*ptr = 0xffffffff;
		puts("\nWaiting for action from pci host -");

		/*
		 * Wait for host to write the start address
		 */
		while (*ptr == 0xffffffff) {
			count++;
			if (!(count % 100)) {
				count2++;
				putc(0x08); /* backspace */
				putc(str[count2 % 4]);
			}

			/* Abort if ctrl-c was pressed */
			if (ctrlc()) {
				puts("\nAbort\n");
				return 0;
			}

			udelay(1000);
		}

		printf("\nGot bootcode %08x: ", *ptr);
		la = ptm1la + (*ptr & ADDRMASK);
		sprintf(addr, "%08x", la);

		switch (*ptr & ~ADDRMASK) {
		case 0:
			/*
			 * Boot image via bootm
			 */
			printf("booting image at addr 0x%s ...\n", addr);
			setenv("loadaddr", addr);
			do_bootm(cmdtp, 0, 0, NULL);
			break;

		case 1:
			/*
			 * Boot image via "source" command
			 */
			printf("executing script at addr 0x%s ...\n", addr);
			local_args[0] = addr;
			local_args[1] = NULL;
			do_source(cmdtp, 0, 1, local_args);
			break;

		case 2:
			/*
			 * Call run_cmd
			 */
			printf("running command at addr 0x%s ...\n", addr);
			run_command((char*)la, 0);
			break;

		default:
			printf("unhandled boot method\n");
			break;
		}
	}
}

U_BOOT_CMD(
	loadpci,	1,	1,	do_loadpci,
	"Wait for pci bootcmd and boot it",
	""
);

#endif
OpenPOWER on IntegriCloud