mmc_card_set_blockaddr(card);
}
- card->ext_csd.boot_info = ext_csd[EXT_CSD_BOOT_INFO];
- card->ext_csd.boot_config = ext_csd[EXT_CSD_PART_CONFIG];
- card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT];
- card->ext_csd.boot_bus_width = ext_csd[EXT_CSD_BOOT_BUS_WIDTH];
-
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
mmc_select_card_type(card);
return err;
}
-static ssize_t mmc_boot_info_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- char *boot_partition[8] = {
- "Device not boot enabled",
- "Boot partition 1 enabled",
- "Boot partition 2 enabled",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "User area enabled for boot"};
-
- char *bus_width[4] = {
- "x1 (sdr) or x4 (ddr) bus width in boot operation mode",
- "x4 (sdr/ddr) bus width in boot operation mode",
- "x8 (sdr/ddr) bus width in boot operation mode",
- "Reserved"};
-
- char *boot_mode[4] = {
- "Use single data rate + backward compatible timings in boot operation",
- "Use single data rate + high speed timings in boot operation mode",
- "Use dual data rate in boot operation",
- "Reserved"};
-
- int partition;
- int width;
- int mode;
- int err;
- u8 *ext_csd = NULL;
- struct mmc_card *card = container_of(dev, struct mmc_card, dev);
-
- /* read it again because user may change it */
- mmc_claim_host(card->host);
- err = mmc_get_ext_csd(card, &ext_csd);
- mmc_release_host(card->host);
- if (err || !ext_csd) {
- pr_err("%s: failed to get ext_csd, err=%d\n",
- mmc_hostname(card->host),
- err);
- return err;
- }
-
- mmc_read_ext_csd(card, ext_csd);
- mmc_free_ext_csd(ext_csd);
-
- partition = (card->ext_csd.boot_config >> 3) & 0x7;
- width = card->ext_csd.boot_bus_width & 0x3;
- mode = (card->ext_csd.boot_bus_width >> 3) & 0x3;
-
- return sprintf(buf,
- "boot_info:0x%02x;\n"
- " ALT_BOOT_MODE:%x - %s\n"
- " DDR_BOOT_MODE:%x - %s\n"
- " HS_BOOTMODE:%x - %s\n"
- "boot_size:%04dKB\n"
- "boot_partition:0x%02x;\n"
- " BOOT_ACK:%x - %s\n"
- " BOOT_PARTITION-ENABLE: %x - %s\n"
- "boot_bus:0x%02x\n"
- " BOOT_MODE:%x - %s\n"
- " RESET_BOOT_BUS_WIDTH:%x - %s\n"
- " BOOT_BUS_WIDTH:%x - %s\n",
-
- card->ext_csd.boot_info,
- !!(card->ext_csd.boot_info & 0x1),
- (card->ext_csd.boot_info & 0x1) ?
- "Supports alternate boot method" :
- "Does not support alternate boot method",
- !!(card->ext_csd.boot_info & 0x2),
- (card->ext_csd.boot_info & 0x2) ?
- "Supports alternate dual data rate during boot" :
- "Does not support dual data rate during boot",
- !!(card->ext_csd.boot_info & 0x4),
- (card->ext_csd.boot_info & 0x4) ?
- "Supports high speed timing during boot" :
- "Does not support high speed timing during boot",
-
- card->ext_csd.boot_size * 128,
-
- card->ext_csd.boot_config,
- !!(card->ext_csd.boot_config & 0x40),
- (card->ext_csd.boot_config & 0x40) ?
- "Boot acknowledge sent during boot operation" :
- "No boot acknowledge sent",
- partition,
- boot_partition[partition],
-
- card->ext_csd.boot_bus_width,
- mode,
- boot_mode[mode],
- !!(card->ext_csd.boot_bus_width & 0x4),
- (card->ext_csd.boot_bus_width & 0x4) ?
- "Retain boot bus width and boot mode after boot operation" :
- "Reset bus width to x1, single data rate and backward"
- "compatible timings after boot operation",
- width,
- bus_width[width]);
-}
-
-/* set up boot partitions */
-static ssize_t
-setup_boot_partitions(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- int err, busy = 0;
- u32 part;
- u8 *ext_csd, boot_config;
- struct mmc_command cmd;
- struct mmc_card *card = container_of(dev, struct mmc_card, dev);
-
- BUG_ON(!card);
-
- sscanf(buf, "%d\n", &part);
-
- if (card->csd.mmca_vsn < CSD_SPEC_VER_4) {
- pr_err("%s: invalid mmc version" \
- " mmc version is below version 4!)\n",
- mmc_hostname(card->host));
- return -EINVAL;
- }
-
- /* it's a normal SD/MMC but user request to configure boot partition */
- if (card->ext_csd.boot_size <= 0) {
- pr_err("%s: fail to send SWITCH command to card " \
- "to update boot_config of the EXT_CSD!\n",
- mmc_hostname(card->host));
- return -EINVAL;
- }
-
- /*
- * partition must be -
- * 0 - user area
- * 1 - boot partition 1
- * 2 - boot partition 2
- * DO NOT switch the partitions that used to be accessed
- * in OS layer HERE
- */
- if (part & EXT_CSD_BOOT_PARTITION_ACCESS_MASK) {
- pr_err("%s: DO NOT switch the partitions that used to be\n" \
- " accessed in OS layer HERE. please following the\n" \
- " guidance of Documentation/mmc/mmc-dev-parts.txt.\n",
- mmc_hostname(card->host));
- return -EINVAL;
- }
-
- ext_csd = kmalloc(512, GFP_KERNEL);
- if (!ext_csd) {
- pr_err("%s: could not allocate a buffer to " \
- "receive the ext_csd.\n", mmc_hostname(card->host));
- return -ENOMEM;
- }
-
- mmc_claim_host(card->host);
- err = mmc_send_ext_csd(card, ext_csd);
- if (err) {
- pr_err("%s: unable to read EXT_CSD.\n",
- mmc_hostname(card->host));
- goto err_rtn;
- }
-
- /* enable the boot partition in boot mode */
- /* boot enable be -
- * 0x00 - disable boot enable.
- * 0x08 - boot partition 1 is enabled for boot.
- * 0x10 - boot partition 2 is enabled for boot.
- * 0x38 - User area is enabled for boot.
- */
- switch (part & EXT_CSD_BOOT_PARTITION_ENABLE_MASK) {
- case 0:
- boot_config = (ext_csd[EXT_CSD_PART_CONFIG]
- & ~EXT_CSD_BOOT_PARTITION_ENABLE_MASK
- & ~EXT_CSD_BOOT_ACK_ENABLE);
- break;
- case EXT_CSD_BOOT_PARTITION_PART1:
- boot_config = ((ext_csd[EXT_CSD_PART_CONFIG]
- & ~EXT_CSD_BOOT_PARTITION_ENABLE_MASK)
- | EXT_CSD_BOOT_PARTITION_PART1
- | EXT_CSD_BOOT_ACK_ENABLE);
- break;
- case EXT_CSD_BOOT_PARTITION_PART2:
- boot_config = ((ext_csd[EXT_CSD_PART_CONFIG]
- & ~EXT_CSD_BOOT_PARTITION_ENABLE_MASK)
- | EXT_CSD_BOOT_PARTITION_PART2
- | EXT_CSD_BOOT_ACK_ENABLE);
- break;
- case EXT_CSD_BOOT_PARTITION_ENABLE_MASK:
- boot_config = ((ext_csd[EXT_CSD_PART_CONFIG]
- | EXT_CSD_BOOT_PARTITION_ENABLE_MASK)
- & ~EXT_CSD_BOOT_ACK_ENABLE);
- break;
- default:
- pr_err("%s: wrong boot config parameter" \
- " 00 (disable boot), 08 (enable boot1)," \
- "16 (enable boot2), 56 (User area)\n",
- mmc_hostname(card->host));
- err = -EINVAL;
- goto err_rtn;
- }
-
- err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_PART_CONFIG, boot_config, card->ext_csd.part_time);
- if (err) {
- pr_err("%s: fail to send SWITCH command to card " \
- "to update boot_config of the EXT_CSD!\n",
- mmc_hostname(card->host));
- goto err_rtn;
- }
-
- /* waiting for the card to finish the busy state */
- do {
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = MMC_SEND_STATUS;
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(card->host, &cmd, 0);
- if (err || busy > 100) {
- pr_err("%s: failed to wait for" \
- "the busy state to end.\n",
- mmc_hostname(card->host));
- break;
- }
-
- if (!busy && !(cmd.resp[0] & R1_READY_FOR_DATA)) {
- pr_info("%s: card is in busy state" \
- "pls wait for busy state to end.\n",
- mmc_hostname(card->host));
- }
- busy++;
- } while (!(cmd.resp[0] & R1_READY_FOR_DATA));
-
- /* Now check whether it works */
- err = mmc_send_ext_csd(card, ext_csd);
- if (err) {
- pr_err("%s: %d unable to re-read EXT_CSD.\n",
- mmc_hostname(card->host), err);
- goto err_rtn;
- }
-
- card->ext_csd.boot_config = ext_csd[EXT_CSD_PART_CONFIG];
-
-err_rtn:
- mmc_release_host(card->host);
- kfree(ext_csd);
- if (err)
- return err;
- else
- return count;
-}
-
-/* configure the boot bus */
-static ssize_t
-setup_boot_bus(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- int err, busy = 0;
- u32 boot_bus, new_bus;
- u8 *ext_csd;
- struct mmc_command cmd;
- struct mmc_card *card = container_of(dev, struct mmc_card, dev);
-
- BUG_ON(!card);
-
- sscanf(buf, "%d\n", &boot_bus);
-
- if (card->csd.mmca_vsn < CSD_SPEC_VER_4) {
- pr_err("%s: invalid mmc version" \
- " mmc version is below version 4!)\n",
- mmc_hostname(card->host));
- return -EINVAL;
- }
-
- /* it's a normal SD/MMC but user request to configure boot bus */
- if (card->ext_csd.boot_size <= 0) {
- pr_err("%s: this is a normal SD/MMC card" \
- " but you request to configure boot bus !\n",
- mmc_hostname(card->host));
- return -EINVAL;
- }
-
- ext_csd = kmalloc(512, GFP_KERNEL);
- if (!ext_csd) {
- pr_err("%s: could not allocate a buffer to " \
- "receive the ext_csd.\n", mmc_hostname(card->host));
- return -ENOMEM;
- }
-
- mmc_claim_host(card->host);
- err = mmc_send_ext_csd(card, ext_csd);
- if (err) {
- pr_err("%s: unable to read EXT_CSD.\n",
- mmc_hostname(card->host));
- goto err_rtn;
- }
-
- /* Configure the boot bus width when boot partition is enabled */
- if (((boot_bus & EXT_CSD_BOOT_BUS_WIDTH_MODE_MASK) >> 3) > 2
- || (boot_bus & EXT_CSD_BOOT_BUS_WIDTH_WIDTH_MASK) > 2
- || (boot_bus & ~EXT_CSD_BOOT_BUS_WIDTH_MASK) > 0) {
- pr_err("%s: Invalid inputs!\n",
- mmc_hostname(card->host));
- err = -EINVAL;
- goto err_rtn;
- }
-
- err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_BOOT_BUS_WIDTH, boot_bus, card->ext_csd.part_time);
- if (err) {
- pr_err("%s: fail to send SWITCH command to card " \
- "to update boot_config of the EXT_CSD!\n",
- mmc_hostname(card->host));
- goto err_rtn;
- }
-
- /* waiting for the card to finish the busy state */
- do {
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = MMC_SEND_STATUS;
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(card->host, &cmd, 0);
- if (err || busy > 100) {
- pr_err("%s: failed to wait for" \
- "the busy state to end.\n",
- mmc_hostname(card->host));
- break;
- }
-
- if (!busy && !(cmd.resp[0] & R1_READY_FOR_DATA)) {
- pr_info("%s: card is in busy state" \
- "pls wait for busy state to end.\n",
- mmc_hostname(card->host));
- }
- busy++;
- } while (!(cmd.resp[0] & R1_READY_FOR_DATA));
-
- /* Now check whether it works */
- err = mmc_send_ext_csd(card, ext_csd);
- if (err) {
- pr_err("%s: %d unable to re-read EXT_CSD.\n",
- mmc_hostname(card->host), err);
- goto err_rtn;
- }
-
- new_bus = ext_csd[EXT_CSD_BOOT_BUS_WIDTH];
- if (boot_bus != new_bus) {
- pr_err("%s: after SWITCH, current boot bus mode %d" \
- " is not same as requested bus mode %d!\n",
- mmc_hostname(card->host), new_bus, boot_bus);
- goto err_rtn;
- }
- card->ext_csd.boot_bus_width = ext_csd[EXT_CSD_BOOT_BUS_WIDTH];
-
-err_rtn:
- mmc_release_host(card->host);
- mmc_free_ext_csd(ext_csd);
- if (err)
- return err;
- else
- return count;
-}
-
MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
card->raw_cid[2], card->raw_cid[3]);
MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
-DEVICE_ATTR(boot_info, S_IRUGO, mmc_boot_info_show, NULL);
-DEVICE_ATTR(boot_config, S_IWUGO, NULL, setup_boot_partitions);
-DEVICE_ATTR(boot_bus_config, S_IWUGO, NULL, setup_boot_bus);
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
&dev_attr_enhanced_area_size.attr,
&dev_attr_raw_rpmb_size_mult.attr,
&dev_attr_rel_sectors.attr,
- &dev_attr_boot_info.attr,
- &dev_attr_boot_config.attr,
- &dev_attr_boot_bus_config.attr,
NULL,
};
ATTRIBUTE_GROUPS(mmc_std);
projects / karo-tx-linux.git / blobdiff