From 2c0d9f241272fb985b8ca56e36b90f3b353c2c34 Mon Sep 17 00:00:00 2001 From: Ryan QIAN Date: Sat, 7 Jan 2012 12:38:06 +0800 Subject: [PATCH] ENGR00173286 merge "eMMC: improve boot_info message output" ENGR133884 eMMC: improve boot_info message output Output bit means of important esd_csd register Read esd_csd info each time when cat boot_info becasue user may change config affect esd_csd value. boot_info:0x07; ALT_BOOT_MODE:1 - Supports alternate boot method DDR_BOOT_MODE:1 - Supports alternate dual data rate during boot HS_BOOTMODE:1 - Supports high speed timing during boot boot_size:0512KB boot_partition:0x48; BOOT_ACK:1 - Boot acknowledge sent during boot operation BOOT_PARTITION-ENABLE: 1 - Boot partition 1 enabled PARTITION_ACCESS:0 - No access to boot partition boot_bus:0x01 BOOT_MODE:0 - Use single data rate + backward compatible timings in boot operation RESET_BOOT_BUS_WIDTH:0 - Reset bus width to x1, single data rate and backward compatible timings after boot operation BOOT_BUS_WIDTH:1 - x4 (sdr/ddr) bus width in boot operation mode Signed-off-by: Frank Li Signed-off-by: Ryan QIAN --- drivers/mmc/core/mmc.c | 112 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 108 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 02001eacbb12..f8ffabd187cf 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -779,12 +779,116 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); -MMC_DEV_ATTR(boot_info, "boot_info:0x%02x; boot_size:%04dKB;" - " boot_partition:0x%02x; boot_bus:0x%02x\n", - card->ext_csd.boot_info, card->ext_csd.boot_size * 128, - card->ext_csd.boot_config, card->ext_csd.boot_bus_width); + +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 *boot_partition_access[8] = { + "No access to boot partition", + "R/W boot partition 1", + "R/W boot partition 2", + "R/W Replay Protected Memory Block (RPMB)", + "Access to General Purpose partition 1", + "Access to General Purpose partition 2", + "Access to General Purpose partition 3", + "Access to General Purpose partition 4"}; + + 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 access; + int width; + int mode; + 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); + mmc_get_ext_csd(card, &ext_csd); + mmc_release_host(card->host); + mmc_read_ext_csd(card, ext_csd); + + partition = (card->ext_csd.boot_config >> 3) & 0x7; + access = card->ext_csd.boot_config & 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" + " PARTITION_ACCESS:%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], + access, + boot_partition_access[access], + + 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]); +} + DEVICE_ATTR(boot_config, S_IWUGO, NULL, setup_boot_partitions); DEVICE_ATTR(boot_bus_config, S_IWUGO, NULL, setup_boot_bus); +DEVICE_ATTR(boot_info, S_IRUGO, mmc_boot_info_show, NULL); MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", card->ext_csd.enhanced_area_offset); MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); -- 2.39.5