summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/cpu/ppc4xx/cmd_chip_config.c
blob: 4e9a40d5854104e53e2fea3c8e1d0e4952826c98 (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
/*
 * (C) Copyright 2008-2009
 * Stefan Roese, DENX Software Engineering, sr@denx.de.
 *
 * (C) Copyright 2009
 * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <i2c.h>
#include <asm/ppc4xx_config.h>
#include <asm/io.h>

static void print_configs(int cur_config_nr)
{
	int i;

	for (i = 0; i < ppc4xx_config_count; i++) {
		printf("%-16s - %s", ppc4xx_config_val[i].label,
		       ppc4xx_config_val[i].description);
		if (i == cur_config_nr)
			printf(" ***");
		printf("\n");
	}

}

static int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int i;
	int ret;
	int cur_config_nr = -1;
	u8 cur_config[CONFIG_4xx_CONFIG_BLOCKSIZE];

	/*
	 * First switch to correct I2C bus. This is I2C bus 0
	 * for all currently available 4xx derivats.
	 */
	i2c_set_bus_num(0);

#ifdef CONFIG_CMD_EEPROM
	ret = eeprom_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
			  CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
			  cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
#else
	ret = i2c_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
		       CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
		       1, cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
#endif
	if (ret) {
		printf("Error reading EEPROM at addr 0x%x\n",
		       CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
		return -1;
	}

	/*
	 * Search the current configuration
	 */
	for (i = 0; i < ppc4xx_config_count; i++) {
		if (memcmp(cur_config, ppc4xx_config_val[i].val,
			   CONFIG_4xx_CONFIG_BLOCKSIZE) == 0)
			cur_config_nr = i;
	}

	if (cur_config_nr == -1) {
		printf("Warning: The I2C bootstrap values don't match any"
		       " of the available options!\n");
		printf("I2C bootstrap EEPROM values are (I2C address 0x%02x):\n",
			CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
		for (i = 0; i < CONFIG_4xx_CONFIG_BLOCKSIZE; i++) {
			printf("%02x ", cur_config[i]);
		}
		printf("\n");
	}

	if (argc < 2) {
		printf("Available configurations (I2C address 0x%02x):\n",
		       CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
		print_configs(cur_config_nr);
		return 0;
	}

	for (i = 0; i < ppc4xx_config_count; i++) {
		/*
		 * Search for configuration name/label
		 */
		if (strcmp(argv[1], ppc4xx_config_val[i].label) == 0) {
			printf("Using configuration:\n%-16s - %s\n",
			       ppc4xx_config_val[i].label,
			       ppc4xx_config_val[i].description);

#ifdef CONFIG_CMD_EEPROM
			ret = eeprom_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
					   CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
					   ppc4xx_config_val[i].val,
					   CONFIG_4xx_CONFIG_BLOCKSIZE);
#else
			ret = i2c_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
					CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
					1, ppc4xx_config_val[i].val,
					CONFIG_4xx_CONFIG_BLOCKSIZE);
#endif
			udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
			if (ret) {
				printf("Error updating EEPROM at addr 0x%x\n",
				       CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
				return -1;
			}

			printf("done (dump via 'i2c md %x 0.1 %x')\n",
			       CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
			       CONFIG_4xx_CONFIG_BLOCKSIZE);
			printf("Reset the board for the changes to"
			       " take effect\n");
			return 0;
		}
	}

	printf("Configuration %s not found!\n", argv[1]);
	print_configs(cur_config_nr);
	return -1;
}

U_BOOT_CMD(
	chip_config,	2,	0,	do_chip_config,
	"program the I2C bootstrap EEPROM",
	"[config-label]"
);
OpenPOWER on IntegriCloud