summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-netx/generic.c
blob: 450226d2ccd5dc268056166ec8d8766d86e3afff (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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
/*
 * 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.
 *
 */

#include <common.h>
#include <init.h>
#include <command.h>
#include <io.h>
#include <restart.h>
#include <mach/netx-regs.h>
#include <mach/netx-xc.h>
#include "eth_firmware.h"

struct fw_header {
	unsigned int magic;
	unsigned int type;
	unsigned int version;
	unsigned int table_size;
	unsigned int reserved[4];
} __attribute__((packed));

static int xc_check_ptr(int xcno, unsigned long adr, unsigned int size)
{
	if (adr >= NETX_PA_XMAC(xcno) &&
	    adr + size < NETX_PA_XMAC(xcno) + XMAC_MEM_SIZE)
		return 0;

	if (adr >= NETX_PA_XPEC(xcno) &&
	    adr + size < NETX_PA_XPEC(xcno) + XPEC_MEM_SIZE)
		return 0;

	printf("%s: illegal pointer 0x%08lx\n", __func__ ,adr);
	return -1;
}

static int xc_patch(int xcno, const u32 *patch, int count)
{
	unsigned int adr, val;

	int i;
	for (i = 0; i < count; i++) {
		adr = *patch++;
		val = *patch++;
		if (xc_check_ptr(xcno, adr, 1) < 0)
			return -1;
		writel(val, adr);
	}
	return 0;
}

static void memset32(void *s, int c, int n)
{
	int i;
	u32 *t = s;

	for (i = 0; i < (n >> 2); i++)
		*t++ = 0;
}

static void memcpy32(void *trg, const void *src, int size)
{
	int i;
	u32 *t = trg;
	const u32 *s = src;
	for (i = 0; i < (size >> 2); i++)
		*t++ = *s++;
}

int loadxc(int xcno)
{
	/* stop xmac / xpec */
	XMAC_REG(xcno, XMAC_RPU_HOLD_PC) = RPU_HOLD_PC;
	XMAC_REG(xcno, XMAC_TPU_HOLD_PC) = TPU_HOLD_PC;
	XPEC_REG(xcno, XPEC_XPU_HOLD_PC) = XPU_HOLD_PC;

	XPEC_REG(xcno, XPEC_PC) = 0;

	/* load firmware */
	memset32((void*)NETX_PA_XPEC(xcno) + XPEC_RAM_START, 0, 0x2000);
	memset32((void*)NETX_PA_XMAC(xcno), 0, 0x800);

	/* can't use barebox memcpy here, we need 32bit accesses */
	if (xcno == 0) {
		memcpy32((void*)(NETX_PA_XMAC(xcno) + XMAC_RPU_PROGRAM_START), rpu_eth0, sizeof(rpu_eth0));
		memcpy32((void*)(NETX_PA_XMAC(xcno) + XMAC_TPU_PROGRAM_START), tpu_eth0, sizeof(tpu_eth0));
		memcpy32((void*)NETX_PA_XPEC(xcno) + XPEC_RAM_START, xpec_eth0_mac, sizeof(xpec_eth0_mac));
		xc_patch(xcno, rpu_eth0_patch, ARRAY_SIZE(rpu_eth0_patch) >> 1);
		xc_patch(xcno, tpu_eth0_patch, ARRAY_SIZE(tpu_eth0_patch) >> 1);
		xc_patch(xcno, xpec_eth0_mac_patch, ARRAY_SIZE(xpec_eth0_mac_patch) >> 1);
	} else {
		memcpy32((void*)(NETX_PA_XMAC(xcno) + XMAC_RPU_PROGRAM_START), rpu_eth1, sizeof(rpu_eth1));
		memcpy32((void*)(NETX_PA_XMAC(xcno) + XMAC_TPU_PROGRAM_START), tpu_eth1, sizeof(tpu_eth1));
		memcpy32((void*)NETX_PA_XPEC(xcno) + XPEC_RAM_START, xpec_eth1_mac, sizeof(xpec_eth1_mac));
		xc_patch(xcno, rpu_eth1_patch, ARRAY_SIZE(rpu_eth1_patch) >> 1);
		xc_patch(xcno, tpu_eth1_patch, ARRAY_SIZE(tpu_eth1_patch) >> 1);
		xc_patch(xcno, xpec_eth1_mac_patch, ARRAY_SIZE(xpec_eth1_mac_patch) >> 1);
	}

	/* start xmac / xpec */
	XPEC_REG(xcno, XPEC_XPU_HOLD_PC) = 0;
	XMAC_REG(xcno, XMAC_TPU_HOLD_PC) = 0;
	XMAC_REG(xcno, XMAC_RPU_HOLD_PC) = 0;

	return 0;
}

static int do_loadxc(int argc, char *argv[])
{
	int xcno;

	if (argc < 2)
		goto failure;

	xcno = simple_strtoul(argv[1], NULL, 16);

	printf("loading xc%d\n",xcno);

	/* There is a bug in the netx internal firmware. For now we have to call this twice */
	loadxc(xcno);
	loadxc(xcno);

	return 0;

failure:
	return COMMAND_ERROR_USAGE;
}

BAREBOX_CMD_START(loadxc)
	.cmd		= do_loadxc,
	BAREBOX_CMD_DESC("load XMAC/XPEC engine with ethernet firmware")
	BAREBOX_CMD_GROUP(CMD_GRP_NET)
BAREBOX_CMD_END

static void __noreturn netx_restart_soc(struct restart_handler *rst)
{
	SYSTEM_REG(SYSTEM_RES_CR) = 0x01000008;

	/* Not reached */
	hang();
}

static int restart_register_feature(void)
{
	restart_handler_register_fn(netx_restart_soc);

	return 0;
}
coredevice_initcall(restart_register_feature);