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/*
* Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*
* 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 <fs.h>
#include <fcntl.h>
#include <libbb.h>
#include <libfile.h>
#include <asm/armlinux.h>
#include <of.h>
#include "hw_version.h"
enum board_type {
BOARD_TYPE_EK,
BOARD_TYPE_DM,
BOARD_TYPE_CPU,
};
static struct board_info {
char *name;
enum board_type type;
unsigned char id;
} board_list[] = {
{"SAM9x5-EK", BOARD_TYPE_EK, 0},
{"SAM9x5-DM", BOARD_TYPE_DM, 1},
{"SAM9G15-CM", BOARD_TYPE_CPU, 2},
{"SAM9G25-CM", BOARD_TYPE_CPU, 3},
{"SAM9G35-CM", BOARD_TYPE_CPU, 4},
{"SAM9X25-CM", BOARD_TYPE_CPU, 5},
{"SAM9X35-CM", BOARD_TYPE_CPU, 6},
{"PDA-DM", BOARD_TYPE_DM, 7},
};
static struct board_info* get_board_info_by_name(const char *name)
{
int i;
for (i = 0; i < ARRAY_SIZE(board_list); i++)
if (strcmp(name, board_list[i].name) == 0)
return &board_list[i];
return NULL;
}
static struct vendor_info {
char *name;
enum vendor_id id;
} vendor_list[] = {
{"EMBEST", VENDOR_EMBEST},
{"FLEX", VENDOR_FLEX},
{"RONETIX", VENDOR_RONETIX},
{"COGENT", VENDOR_COGENT},
{"PDA", VENDOR_PDA},
};
static struct vendor_info* get_vendor_info_by_name(const char *name)
{
int i;
for (i = 0; i < ARRAY_SIZE(vendor_list); i++)
if (strcmp(name, vendor_list[i].name) == 0)
return &vendor_list[i];
return NULL;
}
#define BOARD_NAME_LEN 12
#define VENDOR_NAME_LEN 10
#define VENDOR_COUNTRY_LEN 2
struct one_wire_info {
u8 total_bytes;
u8 vendor_name[VENDOR_NAME_LEN];
u8 vendor_country[VENDOR_COUNTRY_LEN];
u8 board_name[BOARD_NAME_LEN];
u8 year;
u8 week;
u8 revision_code;
u8 revision_id;
u8 reserved;
u8 checksum_l;
u8 checksum_h;
}__attribute__ ((packed));
static int at91sam9x5ek_read_w1(const char *file, struct one_wire_info *info)
{
int fd;
int ret;
fd = open(file, O_RDONLY);
if (fd < 0) {
ret = fd;
goto err;
}
ret = read_full(fd, info, sizeof(*info));
if (ret < 0)
goto err_open;
if (ret < sizeof(*info)) {
ret = -EINVAL;
goto err_open;
}
pr_debug("total_bytes = %d\n", info->total_bytes);
pr_debug("vendor_name = %s\n", info->vendor_name);
pr_debug("vendor_country = %.2s\n", info->vendor_country);
pr_debug("board_name = %s\n", info->board_name);
pr_debug("year = %d\n", info->year);
pr_debug("week = %d\n", info->week);
pr_debug("revision_code = %x\n", info->revision_code);
pr_debug("revision_id = %x\n", info->revision_id);
pr_debug("reserved = %x\n", info->reserved);
pr_debug("checksum_l = %x\n", info->checksum_l);
pr_debug("checksum_h = %x\n", info->checksum_h);
ret = 0;
err_open:
close(fd);
err:
if (ret)
pr_err("can not read 1-wire %s (%s)\n", file, strerror(ret));
return ret;
}
static u32 sn = 0;
static u32 rev = 0;
bool at91sam9x5ek_cm_is_vendor(enum vendor_id vid)
{
return ((sn >> 5) & 0x1f) == vid;
}
bool at91sam9x5ek_ek_is_vendor(enum vendor_id vid)
{
return ((sn >> 15) & 0x1f) == vid;
}
bool at91sam9x5ek_dm_is_vendor(enum vendor_id vid)
{
return ((sn >> 25) & 0x1f) == vid;
}
static void at91sam9x5ek_devices_detect_one(const char *name)
{
struct one_wire_info info;
struct board_info* binfo;
struct vendor_info* vinfo;
struct device_d *dev = NULL;
char str[16];
u8 vendor_id = 0;
if (at91sam9x5ek_read_w1(name, &info))
return;
binfo = get_board_info_by_name(info.board_name);
if (!binfo) {
pr_err("board %s no supported\n", info.board_name);
return;
}
vinfo = get_vendor_info_by_name(info.vendor_name);
if (vinfo)
vendor_id = vinfo->id;
switch (binfo->type) {
case BOARD_TYPE_CPU:
dev = add_generic_device_res("at91sam9x5cm", DEVICE_ID_SINGLE, NULL, 0, NULL);
if (!dev)
return;
sn |= (binfo->id & 0x1f);
sn |= ((vendor_id & 0x1f) << 5);
rev |= (info.revision_code - 'A');
rev |= (((info.revision_id - '0') & 0x3) << 15);
pr_info("CM");
break;
case BOARD_TYPE_EK:
dev = add_generic_device_res("at91sam9x5ek", DEVICE_ID_SINGLE, NULL, 0, NULL);
if (!dev)
return;
sn |= ((binfo->id & 0x1f) << 20);
sn |= ((vendor_id & 0x1f) << 25);
rev |= ((info.revision_code - 'A') << 10);
rev |= (((info.revision_id - '0') & 0x3) << 21);
pr_info("EK");
break;
case BOARD_TYPE_DM:
dev = add_generic_device_res("at91sam9x5dm", DEVICE_ID_SINGLE, NULL, 0, NULL);
if (!dev)
return;
sn |= ((binfo->id & 0x1f) << 10);
sn |= ((vendor_id & 0x1f) << 15);
rev |= ((info.revision_code - 'A') << 5);
rev |= (((info.revision_id - '0') & 0x3) << 18);
pr_info("DM");
break;
}
pr_info(": %s [%c%c] from %s\n",
info.board_name, info.revision_code, info.revision_id,
info.vendor_name);
dev_add_param_fixed(dev, "vendor", info.vendor_name);
dev_add_param_fixed(dev, "board", info.board_name);
sprintf(str, "%.2s", info.vendor_country);
dev_add_param_fixed(dev, "country", str);
dev_add_param_int_ro(dev, "year", info.year, "%d");
dev_add_param_int_ro(dev, "week", info.week, "%d");
sprintf(str, "%c", info.revision_code);
dev_add_param_fixed(dev, "revision_code", str);
sprintf(str, "%c", info.revision_id);
dev_add_param_fixed(dev, "revision_id", str);
}
#define NODE_NAME_LEN 128
static int cm_cogent_fixup(struct device_node *root, void *unused)
{
int ret;
struct device_node *node;
for_each_compatible_node(node, NULL, "atmel,hsmci") {
struct device_node *slotnode =
of_get_child_by_name(node, "slot");
if (!slotnode)
continue;
ret = of_set_property(slotnode, "broken-cd", NULL, 0, 1);
if (ret)
pr_err("error %d while adding broken-cd property to node %s\n",
ret, slotnode->name);
}
return 0;
}
void at91sam9x5ek_devices_detect_hw(void)
{
at91sam9x5ek_devices_detect_one("/dev/ds24310");
at91sam9x5ek_devices_detect_one("/dev/ds24311");
at91sam9x5ek_devices_detect_one("/dev/ds24330");
pr_info("sn: 0x%x, rev: 0x%x\n", sn, rev);
armlinux_set_revision(rev);
armlinux_set_serial(sn);
if (at91sam9x5ek_cm_is_vendor(VENDOR_COGENT))
of_register_fixup(cm_cogent_fixup, NULL);
}
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