diff options
Diffstat (limited to 'arch/arm/boards/at91sam9x5ek/hw_version.c')
| -rw-r--r-- | arch/arm/boards/at91sam9x5ek/hw_version.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/arch/arm/boards/at91sam9x5ek/hw_version.c b/arch/arm/boards/at91sam9x5ek/hw_version.c new file mode 100644 index 0000000000..47c640a35f --- /dev/null +++ b/arch/arm/boards/at91sam9x5ek/hw_version.c @@ -0,0 +1,272 @@ +/* + * 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 <asm/armlinux.h> +#include <of.h> +#include <libfdt.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); + sprintf(str, "%d", info.year); + dev_add_param_fixed(dev, "year", str); + sprintf(str, "%d", info.week); + dev_add_param_fixed(dev, "week", str); + 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 fdt_header *fdt) +{ + int off, ret; + char node_name[NODE_NAME_LEN]; + + off = fdt_node_offset_by_compatible(fdt, -1, "atmel,hsmci"); + + while (off != -FDT_ERR_NOTFOUND) { + off = fdt_subnode_offset(fdt, off, "slot"); + fdt_get_path(fdt, off, node_name, NODE_NAME_LEN); + ret = fdt_setprop(fdt, off, "broken-cd", NULL, 0); + if (ret < 0) { + pr_err("error %d while adding broken-cd property to node %s\n", + ret, node_name); + return ret; + } else { + pr_debug("add broken-cd property to node %s\n", node_name); + } + + off = fdt_node_offset_by_compatible(fdt, off, "atmel,hsmci"); + } + + 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); +} |