The FCB on NAND has a special page layout and thus can't be read with the normal MTD driver. Add a fcb command for printing information about the installed FCB on the console.
Signed-off-by: Sascha Hauer <[email protected]> --- commands/Kconfig | 9 ++ common/imx-bbu-nand-fcb.c | 195 ++++++++++++++++++++++++++++---------- 2 files changed, 153 insertions(+), 51 deletions(-) diff --git a/commands/Kconfig b/commands/Kconfig index 9894ecb9aa..cab72b9226 100644 --- a/commands/Kconfig +++ b/commands/Kconfig @@ -326,6 +326,15 @@ config CMD_SLICE command can be used to print informations about slices and also to manipulate them on the command line for debugging purposes. +config CMD_FCB + depends on BAREBOX_UPDATE_IMX_NAND_FCB + tristate + prompt "fcb" + help + Several i.MX SoCs booting from NAND flash need a so called Flash Control Block + at the beginning of the NAND device. The fcb command prints information about + the FCB. + # end Information commands endmenu diff --git a/common/imx-bbu-nand-fcb.c b/common/imx-bbu-nand-fcb.c index 05bee912e4..39425c7fc3 100644 --- a/common/imx-bbu-nand-fcb.c +++ b/common/imx-bbu-nand-fcb.c @@ -14,6 +14,8 @@ #include <linux/sizes.h> #include <bbu.h> #include <fs.h> +#include <command.h> +#include <complete.h> #include <linux/mtd/mtd-abi.h> #include <linux/mtd/nand_mxs.h> #include <linux/mtd/mtd.h> @@ -284,57 +286,57 @@ static __maybe_unused void dump_fcb(void *buf) { struct fcb_block *fcb = buf; - pr_debug("Checksum: 0x%08x\n", fcb->Checksum); - pr_debug("FingerPrint: 0x%08x\n", fcb->FingerPrint); - pr_debug("Version: 0x%08x\n", fcb->Version); - pr_debug("DataSetup: 0x%02x\n", fcb->DataSetup); - pr_debug("DataHold: 0x%02x\n", fcb->DataHold); - pr_debug("AddressSetup: 0x%02x\n", fcb->AddressSetup); - pr_debug("DSAMPLE_TIME: 0x%02x\n", fcb->DSAMPLE_TIME); - pr_debug("NandTimingState: 0x%02x\n", fcb->NandTimingState); - pr_debug("REA: 0x%02x\n", fcb->REA); - pr_debug("RLOH: 0x%02x\n", fcb->RLOH); - pr_debug("RHOH: 0x%02x\n", fcb->RHOH); - pr_debug("PageDataSize: 0x%08x\n", fcb->PageDataSize); - pr_debug("TotalPageSize: 0x%08x\n", fcb->TotalPageSize); - pr_debug("SectorsPerBlock: 0x%08x\n", fcb->SectorsPerBlock); - pr_debug("NumberOfNANDs: 0x%08x\n", fcb->NumberOfNANDs); - pr_debug("TotalInternalDie: 0x%08x\n", fcb->TotalInternalDie); - pr_debug("CellType: 0x%08x\n", fcb->CellType); - pr_debug("EccBlockNEccType: 0x%08x\n", fcb->EccBlockNEccType); - pr_debug("EccBlock0Size: 0x%08x\n", fcb->EccBlock0Size); - pr_debug("EccBlockNSize: 0x%08x\n", fcb->EccBlockNSize); - pr_debug("EccBlock0EccType: 0x%08x\n", fcb->EccBlock0EccType); - pr_debug("MetadataBytes: 0x%08x\n", fcb->MetadataBytes); - pr_debug("NumEccBlocksPerPage: 0x%08x\n", fcb->NumEccBlocksPerPage); - pr_debug("EccBlockNEccLevelSDK: 0x%08x\n", fcb->EccBlockNEccLevelSDK); - pr_debug("EccBlock0SizeSDK: 0x%08x\n", fcb->EccBlock0SizeSDK); - pr_debug("EccBlockNSizeSDK: 0x%08x\n", fcb->EccBlockNSizeSDK); - pr_debug("EccBlock0EccLevelSDK: 0x%08x\n", fcb->EccBlock0EccLevelSDK); - pr_debug("NumEccBlocksPerPageSDK: 0x%08x\n", fcb->NumEccBlocksPerPageSDK); - pr_debug("MetadataBytesSDK: 0x%08x\n", fcb->MetadataBytesSDK); - pr_debug("EraseThreshold: 0x%08x\n", fcb->EraseThreshold); - pr_debug("BootPatch: 0x%08x\n", fcb->BootPatch); - pr_debug("PatchSectors: 0x%08x\n", fcb->PatchSectors); - pr_debug("Firmware1_startingPage: 0x%08x\n", fcb->Firmware1_startingPage); - pr_debug("Firmware2_startingPage: 0x%08x\n", fcb->Firmware2_startingPage); - pr_debug("PagesInFirmware1: 0x%08x\n", fcb->PagesInFirmware1); - pr_debug("PagesInFirmware2: 0x%08x\n", fcb->PagesInFirmware2); - pr_debug("DBBTSearchAreaStartAddress: 0x%08x\n", fcb->DBBTSearchAreaStartAddress); - pr_debug("BadBlockMarkerByte: 0x%08x\n", fcb->BadBlockMarkerByte); - pr_debug("BadBlockMarkerStartBit: 0x%08x\n", fcb->BadBlockMarkerStartBit); - pr_debug("BBMarkerPhysicalOffset: 0x%08x\n", fcb->BBMarkerPhysicalOffset); - pr_debug("BCHType: 0x%08x\n", fcb->BCHType); - pr_debug("TMTiming2_ReadLatency: 0x%08x\n", fcb->TMTiming2_ReadLatency); - pr_debug("TMTiming2_PreambleDelay: 0x%08x\n", fcb->TMTiming2_PreambleDelay); - pr_debug("TMTiming2_CEDelay: 0x%08x\n", fcb->TMTiming2_CEDelay); - pr_debug("TMTiming2_PostambleDelay: 0x%08x\n", fcb->TMTiming2_PostambleDelay); - pr_debug("TMTiming2_CmdAddPause: 0x%08x\n", fcb->TMTiming2_CmdAddPause); - pr_debug("TMTiming2_DataPause: 0x%08x\n", fcb->TMTiming2_DataPause); - pr_debug("TMSpeed: 0x%08x\n", fcb->TMSpeed); - pr_debug("TMTiming1_BusyTimeout: 0x%08x\n", fcb->TMTiming1_BusyTimeout); - pr_debug("DISBBM: 0x%08x\n", fcb->DISBBM); - pr_debug("BBMarkerPhysOfsInSpareData: 0x%08x\n", fcb->BBMarkerPhysicalOffsetInSpareData); + printf("Checksum: 0x%08x\n", fcb->Checksum); + printf("FingerPrint: 0x%08x\n", fcb->FingerPrint); + printf("Version: 0x%08x\n", fcb->Version); + printf("DataSetup: 0x%02x\n", fcb->DataSetup); + printf("DataHold: 0x%02x\n", fcb->DataHold); + printf("AddressSetup: 0x%02x\n", fcb->AddressSetup); + printf("DSAMPLE_TIME: 0x%02x\n", fcb->DSAMPLE_TIME); + printf("NandTimingState: 0x%02x\n", fcb->NandTimingState); + printf("REA: 0x%02x\n", fcb->REA); + printf("RLOH: 0x%02x\n", fcb->RLOH); + printf("RHOH: 0x%02x\n", fcb->RHOH); + printf("PageDataSize: 0x%08x\n", fcb->PageDataSize); + printf("TotalPageSize: 0x%08x\n", fcb->TotalPageSize); + printf("SectorsPerBlock: 0x%08x\n", fcb->SectorsPerBlock); + printf("NumberOfNANDs: 0x%08x\n", fcb->NumberOfNANDs); + printf("TotalInternalDie: 0x%08x\n", fcb->TotalInternalDie); + printf("CellType: 0x%08x\n", fcb->CellType); + printf("EccBlockNEccType: 0x%08x\n", fcb->EccBlockNEccType); + printf("EccBlock0Size: 0x%08x\n", fcb->EccBlock0Size); + printf("EccBlockNSize: 0x%08x\n", fcb->EccBlockNSize); + printf("EccBlock0EccType: 0x%08x\n", fcb->EccBlock0EccType); + printf("MetadataBytes: 0x%08x\n", fcb->MetadataBytes); + printf("NumEccBlocksPerPage: 0x%08x\n", fcb->NumEccBlocksPerPage); + printf("EccBlockNEccLevelSDK: 0x%08x\n", fcb->EccBlockNEccLevelSDK); + printf("EccBlock0SizeSDK: 0x%08x\n", fcb->EccBlock0SizeSDK); + printf("EccBlockNSizeSDK: 0x%08x\n", fcb->EccBlockNSizeSDK); + printf("EccBlock0EccLevelSDK: 0x%08x\n", fcb->EccBlock0EccLevelSDK); + printf("NumEccBlocksPerPageSDK: 0x%08x\n", fcb->NumEccBlocksPerPageSDK); + printf("MetadataBytesSDK: 0x%08x\n", fcb->MetadataBytesSDK); + printf("EraseThreshold: 0x%08x\n", fcb->EraseThreshold); + printf("BootPatch: 0x%08x\n", fcb->BootPatch); + printf("PatchSectors: 0x%08x\n", fcb->PatchSectors); + printf("Firmware1_startingPage: 0x%08x\n", fcb->Firmware1_startingPage); + printf("Firmware2_startingPage: 0x%08x\n", fcb->Firmware2_startingPage); + printf("PagesInFirmware1: 0x%08x\n", fcb->PagesInFirmware1); + printf("PagesInFirmware2: 0x%08x\n", fcb->PagesInFirmware2); + printf("DBBTSearchAreaStartAddress: 0x%08x\n", fcb->DBBTSearchAreaStartAddress); + printf("BadBlockMarkerByte: 0x%08x\n", fcb->BadBlockMarkerByte); + printf("BadBlockMarkerStartBit: 0x%08x\n", fcb->BadBlockMarkerStartBit); + printf("BBMarkerPhysicalOffset: 0x%08x\n", fcb->BBMarkerPhysicalOffset); + printf("BCHType: 0x%08x\n", fcb->BCHType); + printf("TMTiming2_ReadLatency: 0x%08x\n", fcb->TMTiming2_ReadLatency); + printf("TMTiming2_PreambleDelay: 0x%08x\n", fcb->TMTiming2_PreambleDelay); + printf("TMTiming2_CEDelay: 0x%08x\n", fcb->TMTiming2_CEDelay); + printf("TMTiming2_PostambleDelay: 0x%08x\n", fcb->TMTiming2_PostambleDelay); + printf("TMTiming2_CmdAddPause: 0x%08x\n", fcb->TMTiming2_CmdAddPause); + printf("TMTiming2_DataPause: 0x%08x\n", fcb->TMTiming2_DataPause); + printf("TMSpeed: 0x%08x\n", fcb->TMSpeed); + printf("TMTiming1_BusyTimeout: 0x%08x\n", fcb->TMTiming1_BusyTimeout); + printf("DISBBM: 0x%08x\n", fcb->DISBBM); + printf("BBMarkerPhysOfsInSpareData: 0x%08x\n", fcb->BBMarkerPhysicalOffsetInSpareData); } static __maybe_unused ssize_t raw_read_page(struct mtd_info *mtd, void *dst, loff_t offset) @@ -1625,3 +1627,94 @@ int imx7_bbu_nand_register_handler(const char *name, unsigned long flags) return ret; } #endif + +static void dump_fcb_n(struct fcb_block **fcbs, int n) +{ + int i; + + if (!n || !fcbs[n]) + goto skip_compare; + + for (i = 0; i < n; i++) { + if (!fcbs[i] || !fcbs[n]) + continue; + + if (!memcmp(fcbs[i], fcbs[n], sizeof(struct fcb_block))) { + printf("FCB block#%d: same as FCB block#%d\n", n, i); + return; + } + } + +skip_compare: + if (fcbs[n]) { + printf("FCB block#%d:\n", n); + dump_fcb(fcbs[n]); + } else { + printf("FCB block#%d: NULL\n", n); + } +} + +#ifdef CONFIG_ARCH_IMX28 +static int fcb_read(struct mtd_info *mtd, int block, struct fcb_block **retfcb) +{ + return fcb_read_hamming_13_8(mtd, block, retfcb); +} +#else +static int fcb_read(struct mtd_info *mtd, int block, struct fcb_block **retfcb) +{ + if (cpu_is_mx7()) + return imx7_fcb_read(mtd, block, retfcb); + else if (fcb_is_bch_encoded()) + return fcb_read_bch(mtd, block, retfcb); + else + return fcb_read_hamming_13_8(mtd, block, retfcb); +} +#endif + +static int cmd_fcb(int argc, char *argv[]) +{ + struct cdev *cdev; + struct mtd_info *mtd; + struct fcb_block *fcb[4] = {}; + int i, ret; + + cdev = cdev_open_by_name("nand0", O_RDONLY); + if (!cdev) { + printf("Cannot open nand0\n"); + return COMMAND_ERROR; + } + + mtd = cdev->mtd; + if (!mtd) { + ret = COMMAND_ERROR; + goto out; + } + + for (i = 0; i < 4; i++) + fcb_read(mtd, i, &fcb[i]); + + for (i = 0; i < 4; i++) + dump_fcb_n(fcb, i); + + for (i = 0; i < 4; i++) + free(fcb[i]); + + ret = 0; + +out: + cdev_close(cdev); + + return ret; +} + +BAREBOX_CMD_HELP_START(fcb) +BAREBOX_CMD_HELP_TEXT("Dump FCB as found on /dev/nand0") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(fcb) + .cmd = cmd_fcb, + BAREBOX_CMD_DESC("Dump Flash Control Block (FCB)") + BAREBOX_CMD_GROUP(CMD_GRP_MISC) + BAREBOX_CMD_HELP(cmd_fcb_help) + BAREBOX_CMD_COMPLETE(empty_complete) +BAREBOX_CMD_END -- 2.30.2
