| /* |
| * Copyright (c) 2008, Google Inc. |
| * All rights reserved. |
| * Copyright (c) 2009-2013, The Linux Foundation. All rights reserved. |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <qpic_nand.h> |
| #include <bam.h> |
| #include <dev/flash.h> |
| #include <lib/ptable.h> |
| #include <debug.h> |
| #include <string.h> |
| #include <malloc.h> |
| #include <sys/types.h> |
| #include <platform.h> |
| #include <platform/clock.h> |
| |
| static uint32_t nand_base; |
| static struct ptable *flash_ptable; |
| static struct flash_info flash; |
| static unsigned char *flash_spare_bytes; |
| static uint32_t cfg0; |
| static uint32_t cfg1; |
| static uint32_t cfg0_raw; |
| static uint32_t cfg1_raw; |
| static uint32_t ecc_bch_cfg; |
| |
| struct cmd_element ce_array[100]; |
| |
| #define QPIC_BAM_DATA_FIFO_SIZE 64 |
| #define QPIC_BAM_CMD_FIFO_SIZE 64 |
| |
| static struct bam_desc cmd_desc_fifo[QPIC_BAM_CMD_FIFO_SIZE] __attribute__ ((aligned(BAM_DESC_SIZE))); |
| static struct bam_desc data_desc_fifo[QPIC_BAM_DATA_FIFO_SIZE] __attribute__ ((aligned(BAM_DESC_SIZE))); |
| |
| static struct bam_instance bam; |
| static uint8_t *bbtbl; |
| |
| static uint8_t* rdwr_buf; |
| |
| static struct flash_id supported_flash[] = { |
| /* Flash ID ID Mask Density(MB) Wid Pgsz Blksz oobsz 8-bit ECCf */ |
| {0x1590AC2C, 0xFFFFFFFF, 0x20000000, 0, 2048, 0x00020000, 0x40, 0}, |
| {0x2690AC2C, 0xFFFFFFFF, 0x20000000, 0, 4096, 0x00040000, 0xE0, 1}, |
| /* Note: Width flag is 0 for 8 bit Flash and 1 for 16 bit flash */ |
| }; |
| |
| static void |
| qpic_nand_wait_for_cmd_exec(uint32_t num_desc) |
| { |
| /* Create a read/write event to notify the periperal of the added desc. */ |
| bam_sys_gen_event(&bam, CMD_PIPE_INDEX, num_desc); |
| |
| /* Wait for the descriptors to be processed */ |
| bam_wait_for_interrupt(&bam, CMD_PIPE_INDEX, P_PRCSD_DESC_EN_MASK); |
| |
| /* Read offset update for the circular FIFO */ |
| bam_read_offset_update(&bam, CMD_PIPE_INDEX); |
| } |
| |
| static void |
| qpic_nand_wait_for_data(uint32_t pipe_num) |
| { |
| /* Wait for the descriptors to be processed */ |
| bam_wait_for_interrupt(&bam, pipe_num, P_PRCSD_DESC_EN_MASK); |
| |
| /* Read offset update for the circular FIFO */ |
| bam_read_offset_update(&bam, pipe_num); |
| } |
| |
| static uint32_t |
| qpic_nand_read_reg(uint32_t reg_addr, |
| uint8_t flags, |
| struct cmd_element *cmd_list_ptr) |
| { |
| uint32_t val; |
| |
| bam_add_cmd_element(cmd_list_ptr, reg_addr, (uint32_t)PA((addr_t)&val), CE_READ_TYPE); |
| |
| /* Enqueue the desc for the above command */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)PA((addr_t)cmd_list_ptr), |
| BAM_CE_SIZE, |
| BAM_DESC_CMD_FLAG| BAM_DESC_INT_FLAG | flags); |
| |
| qpic_nand_wait_for_cmd_exec(1); |
| |
| return val; |
| } |
| |
| /* Assume the BAM is in a locked state. */ |
| void |
| qpic_nand_erased_status_reset(struct cmd_element *cmd_list_ptr, uint8_t flags) |
| { |
| uint32_t val = 0; |
| |
| /* Reset the Erased Codeword/Page detection controller. */ |
| val = NAND_ERASED_CW_DETECT_CFG_RESET_CTRL; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_ERASED_CW_DETECT_CFG, val, CE_WRITE_TYPE); |
| |
| /* Enqueue the desc for the above command */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr, |
| BAM_CE_SIZE, |
| BAM_DESC_CMD_FLAG | BAM_DESC_INT_FLAG | flags); |
| |
| qpic_nand_wait_for_cmd_exec(1); |
| |
| /* Enable the Erased Codeword/Page detection |
| * controller to check the data as it arrives. |
| * Also disable ECC reporting for an erased CW. |
| */ |
| val = NAND_ERASED_CW_DETECT_CFG_ACTIVATE_CTRL | NAND_ERASED_CW_DETECT_ERASED_CW_ECC_MASK; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_ERASED_CW_DETECT_CFG, val, CE_WRITE_TYPE); |
| |
| /* Enqueue the desc for the above command */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr, |
| BAM_CE_SIZE, |
| BAM_DESC_CMD_FLAG | BAM_DESC_INT_FLAG); |
| |
| qpic_nand_wait_for_cmd_exec(1); |
| } |
| |
| static nand_result_t |
| qpic_nand_check_status(uint32_t status) |
| { |
| uint32_t erase_sts; |
| |
| /* Check for errors */ |
| if (status & NAND_FLASH_ERR) |
| { |
| /* Check if this is an ECC error on an erased page. */ |
| if (status & NAND_FLASH_OP_ERR) |
| { |
| erase_sts = qpic_nand_read_reg(NAND_ERASED_CW_DETECT_STATUS, 0, ce_array); |
| if ((erase_sts & (1 << NAND_ERASED_CW_DETECT_STATUS_PAGE_ALL_ERASED))) |
| { |
| /* Mask the OP ERROR. */ |
| status &= ~NAND_FLASH_OP_ERR; |
| qpic_nand_erased_status_reset(ce_array, 0); |
| } |
| } |
| |
| /* ECC error flagged on an erased page read. |
| * Ignore and return success. |
| */ |
| if (!(status & NAND_FLASH_ERR)) |
| return NANDC_RESULT_SUCCESS; |
| |
| dprintf(CRITICAL, "Nand Flash error. Status = %d\n", status); |
| |
| if (status & NAND_FLASH_TIMEOUT_ERR) |
| return NANDC_RESULT_TIMEOUT; |
| else |
| return NANDC_RESULT_FAILURE; |
| } |
| |
| return NANDC_RESULT_SUCCESS; |
| } |
| |
| static uint32_t |
| qpic_nand_fetch_id(struct flash_info *flash) |
| { |
| struct cmd_element *cmd_list_ptr = ce_array; |
| struct cmd_element *cmd_list_ptr_start = ce_array; |
| int num_desc = 0; |
| uint32_t status; |
| uint32_t id; |
| uint32_t flash_cmd = NAND_CMD_FETCH_ID; |
| uint32_t exec_cmd = 1; |
| int nand_ret = NANDC_RESULT_SUCCESS; |
| |
| /* Issue the Fetch id command to the NANDc */ |
| bam_add_cmd_element(cmd_list_ptr, NAND_FLASH_CMD, (uint32_t)flash_cmd, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| /* Execute the cmd */ |
| bam_add_cmd_element(cmd_list_ptr, NAND_EXEC_CMD, (uint32_t)exec_cmd, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| /* Prepare the cmd desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| BAM_DESC_LOCK_FLAG | BAM_DESC_INT_FLAG | |
| BAM_DESC_NWD_FLAG | BAM_DESC_CMD_FLAG); |
| |
| /* Keep track of the number of desc added. */ |
| num_desc++; |
| qpic_nand_wait_for_cmd_exec(num_desc); |
| |
| cmd_list_ptr_start = ce_array; |
| cmd_list_ptr = ce_array; |
| |
| /* Read the status register */ |
| status = qpic_nand_read_reg(NAND_FLASH_STATUS, 0, cmd_list_ptr); |
| |
| /* Check for errors */ |
| nand_ret = qpic_nand_check_status(status); |
| if (nand_ret) |
| { |
| dprintf( CRITICAL, "Read ID cmd status failed\n"); |
| goto qpic_nand_fetch_id_err; |
| } |
| |
| /* Read the id */ |
| id = qpic_nand_read_reg(NAND_READ_ID, BAM_DESC_UNLOCK_FLAG, cmd_list_ptr); |
| |
| flash->id = id; |
| flash->vendor = id & 0xff; |
| flash->device = (id >> 8) & 0xff; |
| flash->dev_cfg = (id >> 24) & 0xFF; |
| flash->widebus = 0; |
| flash->widebus &= (id >> 24) & 0xFF; |
| flash->widebus = flash->widebus? 1: 0; |
| |
| qpic_nand_fetch_id_err: |
| return nand_ret; |
| } |
| |
| static int |
| qpic_bam_init(struct qpic_nand_init_config *config) |
| { |
| uint32_t bam_ret = NANDC_RESULT_SUCCESS; |
| |
| bam.base = config->bam_base; |
| /* Set Read pipe params. */ |
| bam.pipe[DATA_PRODUCER_PIPE_INDEX].pipe_num = config->pipes.read_pipe; |
| /* System consumer */ |
| bam.pipe[DATA_PRODUCER_PIPE_INDEX].trans_type = BAM2SYS; |
| bam.pipe[DATA_PRODUCER_PIPE_INDEX].fifo.size = QPIC_BAM_DATA_FIFO_SIZE; |
| bam.pipe[DATA_PRODUCER_PIPE_INDEX].fifo.head = data_desc_fifo; |
| |
| /* Set Write pipe params. */ |
| bam.pipe[DATA_CONSUMER_PIPE_INDEX].pipe_num = config->pipes.write_pipe; |
| /* System producer */ |
| bam.pipe[DATA_CONSUMER_PIPE_INDEX].trans_type = SYS2BAM; |
| bam.pipe[DATA_CONSUMER_PIPE_INDEX].fifo.size = QPIC_BAM_DATA_FIFO_SIZE; |
| bam.pipe[DATA_CONSUMER_PIPE_INDEX].fifo.head = data_desc_fifo; |
| |
| /* Set Cmd pipe params. */ |
| bam.pipe[CMD_PIPE_INDEX].pipe_num = config->pipes.cmd_pipe; |
| /* System consumer */ |
| bam.pipe[CMD_PIPE_INDEX].trans_type = BAM2SYS; |
| bam.pipe[CMD_PIPE_INDEX].fifo.size = QPIC_BAM_CMD_FIFO_SIZE; |
| bam.pipe[CMD_PIPE_INDEX].fifo.head = cmd_desc_fifo; |
| |
| /* Programs the threshold for BAM transfer |
| * When this threshold is reached, BAM signals the peripheral via the pipe_bytes_available |
| * interface. |
| * The peripheral is signalled with this notification in the following cases: |
| * a. It has accumulated all the descriptors. |
| * b. It has accumulated more than threshold bytes. |
| * c. It has reached EOT (End Of Transfer). |
| * Note: this value needs to be set by the h/w folks and is specific for each peripheral. |
| */ |
| bam.threshold = 32; |
| |
| /* Set the EE. */ |
| bam.ee = config->ee; |
| |
| /* Set the max desc length for this BAM. */ |
| bam.max_desc_len = config->max_desc_len; |
| |
| /* BAM Init. */ |
| bam_init(&bam); |
| |
| /* Initialize BAM QPIC read pipe */ |
| bam_sys_pipe_init(&bam, DATA_PRODUCER_PIPE_INDEX); |
| |
| /* Init read fifo */ |
| bam_ret = bam_pipe_fifo_init(&bam, bam.pipe[DATA_PRODUCER_PIPE_INDEX].pipe_num); |
| |
| if (bam_ret) |
| { |
| dprintf(CRITICAL, "QPIC:NANDc BAM Read FIFO init error\n"); |
| bam_ret = NANDC_RESULT_FAILURE; |
| goto qpic_nand_bam_init_error; |
| } |
| |
| /* Initialize BAM QPIC write pipe */ |
| bam_sys_pipe_init(&bam, DATA_CONSUMER_PIPE_INDEX); |
| |
| /* Init write fifo. Use the same fifo as read fifo. */ |
| bam_ret = bam_pipe_fifo_init(&bam, bam.pipe[DATA_CONSUMER_PIPE_INDEX].pipe_num); |
| |
| if (bam_ret) |
| { |
| dprintf(CRITICAL, "QPIC: NANDc: BAM Write FIFO init error\n"); |
| bam_ret = NANDC_RESULT_FAILURE; |
| goto qpic_nand_bam_init_error; |
| } |
| |
| /* Initialize BAM QPIC cmd pipe */ |
| bam_sys_pipe_init(&bam, CMD_PIPE_INDEX); |
| |
| /* Init cmd fifo */ |
| bam_ret = bam_pipe_fifo_init(&bam, bam.pipe[CMD_PIPE_INDEX].pipe_num); |
| |
| if (bam_ret) |
| { |
| dprintf(CRITICAL, "QPIC:NANDc BAM CMD FIFO init error\n"); |
| bam_ret = NANDC_RESULT_FAILURE; |
| goto qpic_nand_bam_init_error; |
| } |
| |
| qpic_nand_bam_init_error: |
| return bam_ret; |
| } |
| |
| /* Adds command elements for addr and cfg register writes. |
| * cfg: Defines the configuration for the flash cmd. |
| * start: Address where the command elements are added. |
| * |
| * Returns the address where the next cmd element can be added. |
| */ |
| static struct cmd_element* |
| qpic_nand_add_addr_n_cfg_ce(struct cfg_params *cfg, |
| struct cmd_element *start) |
| { |
| struct cmd_element *cmd_list_ptr = start; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_ADDR0, (uint32_t)cfg->addr0, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_ADDR1, (uint32_t)cfg->addr1, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV0_CFG0, (uint32_t)cfg->cfg0, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV0_CFG1, (uint32_t)cfg->cfg1, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| return cmd_list_ptr; |
| } |
| |
| |
| static struct cmd_element* |
| qpic_nand_add_onfi_probe_ce(struct onfi_probe_params *params, |
| struct cmd_element *start) |
| { |
| struct cmd_element *cmd_list_ptr = start; |
| |
| cmd_list_ptr = qpic_nand_add_addr_n_cfg_ce(¶ms->cfg, cmd_list_ptr); |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV_CMD1, (uint32_t)params->dev_cmd1, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV_CMD_VLD, (uint32_t)params->vld, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_READ_LOCATION_n(0), (uint32_t)params->cfg.addr_loc_0, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_FLASH_CMD, (uint32_t)params->cfg.cmd, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_EXEC_CMD, (uint32_t)params->cfg.exec, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| return cmd_list_ptr; |
| } |
| |
| static int |
| onfi_probe_cmd_exec(struct onfi_probe_params *params, |
| unsigned char* data_ptr, |
| int data_len) |
| { |
| struct cmd_element *cmd_list_ptr = ce_array; |
| struct cmd_element *cmd_list_ptr_start = ce_array; |
| int num_desc = 0; |
| uint32_t status = 0; |
| int nand_ret = NANDC_RESULT_SUCCESS; |
| uint8_t desc_flags = BAM_DESC_NWD_FLAG | BAM_DESC_CMD_FLAG |
| | BAM_DESC_LOCK_FLAG | BAM_DESC_INT_FLAG; |
| |
| params->cfg.addr_loc_0 = 0; |
| params->cfg.addr_loc_0 |= NAND_RD_LOC_LAST_BIT(1); |
| params->cfg.addr_loc_0 |= NAND_RD_LOC_OFFSET(0); |
| params->cfg.addr_loc_0 |= NAND_RD_LOC_SIZE(data_len); |
| |
| cmd_list_ptr = qpic_nand_add_onfi_probe_ce(params, cmd_list_ptr); |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((addr_t)(uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| desc_flags); |
| |
| cmd_list_ptr_start = cmd_list_ptr; |
| num_desc++; |
| |
| /* Add Data desc */ |
| bam_add_desc(&bam, |
| DATA_PRODUCER_PIPE_INDEX, |
| (unsigned char *)PA((addr_t)data_ptr), |
| data_len, |
| BAM_DESC_INT_FLAG); |
| |
| /* Wait for the commands to be executed */ |
| qpic_nand_wait_for_cmd_exec(num_desc); |
| |
| /* Read buffer status and check for errors. */ |
| status = qpic_nand_read_reg(NAND_FLASH_STATUS, 0, cmd_list_ptr++); |
| |
| if (qpic_nand_check_status(status)) |
| { |
| nand_ret = NANDC_RESULT_FAILURE; |
| goto onfi_probe_exec_err; |
| } |
| |
| /* Wait for data to be available */ |
| qpic_nand_wait_for_data(DATA_PRODUCER_PIPE_INDEX); |
| |
| /* Check for errors */ |
| nand_ret = qpic_nand_check_status(status); |
| |
| onfi_probe_exec_err: |
| return nand_ret; |
| } |
| |
| /* TODO: check why both vld and cmd need to be written. */ |
| void |
| qpic_nand_onfi_probe_cleanup(uint32_t vld, uint32_t dev_cmd1) |
| { |
| struct cmd_element *cmd_list_ptr = ce_array; |
| struct cmd_element *cmd_list_ptr_start = ce_array; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV_CMD1, dev_cmd1, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV_CMD_VLD, vld, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| BAM_DESC_UNLOCK_FLAG | BAM_DESC_CMD_FLAG| BAM_DESC_INT_FLAG); |
| |
| qpic_nand_wait_for_cmd_exec(1); |
| } |
| |
| static int |
| qpic_nand_onfi_save_params(struct onfi_param_page *param_page, struct flash_info *flash) |
| { |
| int onfi_ret = NANDC_RESULT_SUCCESS; |
| uint32_t ecc_bits; |
| |
| onfi_ret = qpic_nand_fetch_id(flash); |
| |
| if (onfi_ret) |
| { |
| dprintf(CRITICAL, "Fetch ID cmd failed\n"); |
| goto onfi_save_params_err; |
| } |
| |
| flash->page_size = param_page->data_per_pg; |
| flash->block_size = param_page->pgs_per_blk * flash->page_size; |
| flash->num_blocks = param_page->blks_per_LUN; |
| flash->widebus = param_page->feature_supported & 0x1; |
| flash->density = param_page->blks_per_LUN * flash->blksize; |
| flash->spare_size = param_page->spare_per_pg; |
| ecc_bits = param_page->num_bits_ecc_correctability; |
| flash->num_pages_per_blk = param_page->pgs_per_blk; |
| flash->num_pages_per_blk_mask = param_page->pgs_per_blk - 1; |
| |
| if (ecc_bits >= 8) |
| flash->ecc_width = NAND_WITH_8_BIT_ECC; |
| else |
| flash->ecc_width = NAND_WITH_4_BIT_ECC; |
| |
| onfi_save_params_err: |
| return onfi_ret; |
| } |
| |
| static void |
| qpic_nand_save_config(struct flash_info *flash) |
| { |
| |
| /* Save Configurations */ |
| flash->cws_per_page = flash->page_size >> NAND_CW_DIV_RIGHT_SHIFT; |
| |
| /* Verify that we have enough buffer to handle all the cws in a page. */ |
| ASSERT(flash->cws_per_page <= QPIC_NAND_MAX_CWS_IN_PAGE); |
| |
| /* Codeword Size = UD_SIZE_BYTES + ECC_PARITY_SIZE_BYTES |
| * + SPARE_SIZE_BYTES + Bad Block size |
| */ |
| if (flash->ecc_width & NAND_WITH_8_BIT_ECC) |
| { |
| flash->cw_size = NAND_CW_SIZE_8_BIT_ECC; |
| ecc_bch_cfg |= (1 << NAND_DEV0_ECC_MODE_SHIFT); /* Use 8-bit ecc */ |
| |
| if (flash->widebus) |
| { |
| cfg0 |= (0 << NAND_DEV0_CFG0_SPARE_SZ_BYTES_SHIFT); /* spare size bytes in each CW */ |
| ecc_bch_cfg |= (14 << NAND_DEV0_ECC_PARITY_SZ_BYTES_SHIFT); /* parity bytes in each CW */ |
| } |
| else |
| { |
| cfg0 |= (2 << NAND_DEV0_CFG0_SPARE_SZ_BYTES_SHIFT); /* spare size bytes in each CW */ |
| ecc_bch_cfg |= (13 << NAND_DEV0_ECC_PARITY_SZ_BYTES_SHIFT); /* parity bytes in each CW */ |
| } |
| } |
| else |
| { |
| flash->cw_size = NAND_CW_SIZE_4_BIT_ECC; |
| |
| if (flash->widebus) |
| { |
| cfg0 |= (2 << NAND_DEV0_CFG0_SPARE_SZ_BYTES_SHIFT); /* spare size bytes in each CW */ |
| ecc_bch_cfg |= (8 << NAND_DEV0_ECC_PARITY_SZ_BYTES_SHIFT); /* parity bytes in each CW */ |
| } |
| else |
| { |
| cfg0 |= (4 << NAND_DEV0_CFG0_SPARE_SZ_BYTES_SHIFT); /* spare size bytes in each CW */ |
| ecc_bch_cfg |= (7 << NAND_DEV0_ECC_PARITY_SZ_BYTES_SHIFT); /* parity bytes in each CW */ |
| } |
| } |
| |
| /* BAD_BLOCK_BYTE_NUM = Page Size - |
| * (CW_PER_PAGE * Codeword Size) + 1 |
| * Note: Set CW_PER_PAGE to 1 less than the actual number. |
| */ |
| flash->bad_blk_loc = flash->page_size - flash->cw_size * (flash->cws_per_page - 1) + 1; |
| |
| cfg0 |= ((flash->cws_per_page - 1) << NAND_DEV0_CFG0_CW_PER_PAGE_SHIFT) /* 4/8 cw/pg for 2/4k */ |
| |(DATA_BYTES_IN_IMG_PER_CW << NAND_DEV0_CFG0_UD_SIZE_BYTES_SHIFT) /* 516 user data bytes */ |
| |(5 << NAND_DEV0_CFG0_ADDR_CYCLE_SHIFT) /* 5 address cycles */ |
| |(0 << NAND_DEV0_CFG0_DIS_STS_AFTER_WR_SHIFT);/* Send read status cmd after each write. */ |
| |
| cfg1 |= (7 << NAND_DEV0_CFG1_RECOVERY_CYCLES_SHIFT) /* 8 recovery cycles */ |
| |(0 << NAND_DEV0_CFG1_CS_ACTIVE_BSY_SHIFT) /* Allow CS deassertion */ |
| |(flash->bad_blk_loc << NAND_DEV0_CFG1_BAD_BLK_BYTE_NUM_SHIFT)/* Bad block marker location */ |
| |(0 << NAND_DEV0_CFG1_BAD_BLK_IN_SPARE_SHIFT) /* Bad block in user data area */ |
| |(2 << NAND_DEV0_CFG1_WR_RD_BSY_GAP_SHIFT) /* 8 cycle tWB/tRB */ |
| |(flash->widebus << NAND_DEV0_CFG1_WIDE_BUS_SHIFT); /* preserve wide flash flag */ |
| |
| cfg0_raw = ((flash->cws_per_page- 1) << NAND_DEV0_CFG0_CW_PER_PAGE_SHIFT) |
| |(5 << NAND_DEV0_CFG0_ADDR_CYCLE_SHIFT) |
| |(516 << NAND_DEV0_CFG0_UD_SIZE_BYTES_SHIFT) //figure out the size of cw |
| | (1 << NAND_DEV0_CFG0_DIS_STS_AFTER_WR_SHIFT); |
| |
| cfg1_raw = (7 << NAND_DEV0_CFG1_RECOVERY_CYCLES_SHIFT) |
| | (0 << NAND_DEV0_CFG1_CS_ACTIVE_BSY_SHIFT) |
| | (17 << NAND_DEV0_CFG1_BAD_BLK_BYTE_NUM_SHIFT) |
| | (1 << NAND_DEV0_CFG1_BAD_BLK_IN_SPARE_SHIFT) |
| | (2 << NAND_DEV0_CFG1_WR_RD_BSY_GAP_SHIFT) |
| | (flash->widebus << NAND_DEV0_CFG1_WIDE_BUS_SHIFT) |
| |1 ; /* to disable reed solomon ecc..this feild is now read only. */ |
| |
| ecc_bch_cfg |= (0 << NAND_DEV0_ECC_DISABLE_SHIFT) /* Enable ECC */ |
| | (0 << NAND_DEV0_ECC_SW_RESET_SHIFT) /* Put ECC core in op mode */ |
| | (DATA_BYTES_IN_IMG_PER_CW << NAND_DEV0_ECC_NUM_DATA_BYTES) |
| | (1 << NAND_DEV0_ECC_FORCE_CLK_OPEN_SHIFT); /* Enable all clocks */ |
| } |
| |
| /* Onfi probe should issue the following commands to the flash device: |
| * 1. Read ID - with addr ONFI_READ_ID_ADDR. |
| * This returns the ONFI ASCII string indicating support for ONFI. |
| * 2. Read Prameter Page - with addr ONFI_READ_PARAM_PAGE_ADDR. |
| * This returns the params for the device. |
| * Each command inturn issues commands- ADDR0, ADDR1, chip_select, |
| * cfg0, cfg1, cmd_vld, dev_cmd1, read_loc0, flash, exec. |
| */ |
| static int |
| qpic_nand_onfi_probe(struct flash_info *flash) |
| { |
| struct onfi_probe_params params; |
| uint32_t vld; |
| uint32_t dev_cmd1; |
| unsigned char *buffer; |
| unsigned char onfi_str[4]; |
| uint32_t *id; |
| struct onfi_param_page *param_page; |
| int onfi_ret = NANDC_RESULT_SUCCESS; |
| |
| /* Allocate memory required to read the onfi param page */ |
| buffer = (unsigned char*) malloc(ONFI_READ_PARAM_PAGE_BUFFER_SIZE); |
| |
| /* Read the vld and dev_cmd1 registers before modifying */ |
| vld = qpic_nand_read_reg(NAND_DEV_CMD_VLD, 0, ce_array); |
| dev_cmd1 = qpic_nand_read_reg(NAND_DEV_CMD1, 0, ce_array); |
| |
| /* Initialize flash cmd */ |
| params.cfg.cmd = NAND_CMD_PAGE_READ; |
| params.cfg.exec = 1; |
| |
| /* Execute Read ID cmd */ |
| |
| /* Initialize the config */ |
| params.cfg.cfg0 = NAND_CFG0_RAW_ONFI_ID; |
| params.cfg.cfg1 = NAND_CFG1_RAW_ONFI_ID; |
| |
| /* Initialize the cmd and vld */ |
| params.dev_cmd1 = (dev_cmd1 & 0xFFFFFF00) | ONFI_READ_ID_CMD; |
| params.vld = vld & 0xFFFFFFFE; |
| |
| /* Initialize the address |
| * addr1 is not used bcos of the cfg. |
| */ |
| params.cfg.addr0 = ONFI_READ_ID_ADDR; |
| params.cfg.addr1 = 0; |
| |
| /* Lock the pipe and execute the cmd. */ |
| onfi_ret = onfi_probe_cmd_exec(¶ms, onfi_str, ONFI_READ_ID_BUFFER_SIZE); |
| if (onfi_ret) |
| { |
| dprintf(CRITICAL, "ONFI Read id cmd failed\n"); |
| goto qpic_nand_onfi_probe_err; |
| } |
| |
| /* Write back vld and cmd and unlock the pipe. */ |
| qpic_nand_onfi_probe_cleanup(vld, dev_cmd1); |
| |
| /* Check for onfi string */ |
| id = (uint32_t*)onfi_str; |
| if (*id != ONFI_SIGNATURE) |
| { |
| dprintf(CRITICAL, "Not an ONFI device\n"); |
| /* Not an onfi device. Return error. */ |
| onfi_ret = NANDC_RESULT_DEV_NOT_SUPPORTED; |
| goto qpic_nand_onfi_probe_err; |
| } |
| |
| dprintf(INFO, "ONFI device found\n"); |
| /* Now read the param page */ |
| /* Initialize the config */ |
| params.cfg.cfg0 = NAND_CFG0_RAW_ONFI_PARAM_PAGE; |
| params.cfg.cfg1 = NAND_CFG1_RAW_ONFI_PARAM_PAGE; |
| |
| /* Initialize the cmd and vld */ |
| params.dev_cmd1 = (dev_cmd1 & 0xFFFFFF00) | ONFI_READ_PARAM_PAGE_CMD; |
| params.vld = vld & 0xFFFFFFFE; |
| |
| /* Initialize the address |
| * addr1 is not used bcos of the cfg. |
| */ |
| params.cfg.addr0 = ONFI_READ_PARAM_PAGE_ADDR; |
| params.cfg.addr1 = 0; |
| |
| /* Lock the pipe and execute the cmd. */ |
| onfi_ret = onfi_probe_cmd_exec(¶ms, buffer, ONFI_READ_PARAM_PAGE_BUFFER_SIZE); |
| if (onfi_ret) |
| { |
| dprintf(CRITICAL, "ONFI Read param page failed\n"); |
| goto qpic_nand_onfi_probe_err; |
| } |
| |
| /* Write back vld and cmd and unlock the pipe. */ |
| qpic_nand_onfi_probe_cleanup(vld, dev_cmd1); |
| |
| /* Verify the integrity of the returned page */ |
| param_page = (struct onfi_param_page*)buffer; |
| |
| /* TODO: Add CRC check to validate the param page. */ |
| |
| /* Save the parameter values */ |
| onfi_ret = qpic_nand_onfi_save_params(param_page, flash); |
| |
| qpic_nand_onfi_probe_err: |
| if (onfi_ret) |
| dprintf(CRITICAL, "ONFI probe failed\n"); |
| |
| free(buffer); |
| |
| return onfi_ret; |
| } |
| |
| /* Enquues a desc for a flash cmd with NWD flag set: |
| * cfg: Defines the configuration for the flash cmd. |
| * start: Address where the command elements are added. |
| * |
| * Returns the address where the next cmd element can be added. |
| */ |
| struct cmd_element* |
| qpic_nand_add_cmd_ce(struct cfg_params *cfg, |
| struct cmd_element *start) |
| { |
| struct cmd_element *cmd_list_ptr; |
| |
| cmd_list_ptr = qpic_nand_add_addr_n_cfg_ce(cfg, start); |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_FLASH_CMD, (uint32_t)cfg->cmd, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_EXEC_CMD, (uint32_t)cfg->exec, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| return cmd_list_ptr; |
| } |
| |
| /* Reads nand_flash_status and resets nand_flash_status and nand_read_status */ |
| struct cmd_element* |
| qpic_nand_add_read_n_reset_status_ce(struct cmd_element *start, |
| uint32_t *flash_status_read, |
| uint32_t read_status) |
| { |
| struct cmd_element *cmd_list_ptr = start; |
| uint32_t flash_status_reset; |
| uint32_t read_status_reset; |
| |
| /* Read and reset the status registers. */ |
| flash_status_reset = NAND_FLASH_STATUS_RESET; |
| read_status_reset = NAND_READ_STATUS_RESET; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_FLASH_STATUS, (uint32_t)PA((addr_t)flash_status_read), CE_READ_TYPE); |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, NAND_FLASH_STATUS, (uint32_t)flash_status_reset, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| if (read_status) |
| { |
| bam_add_cmd_element(cmd_list_ptr, NAND_READ_STATUS, (uint32_t)read_status_reset, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| } |
| |
| return cmd_list_ptr; |
| } |
| |
| struct cmd_element* |
| qpic_nand_add_isbad_cmd_ce(struct cfg_params *cfg, |
| struct cmd_element *start) |
| { |
| struct cmd_element *cmd_list_ptr = start; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV0_ECC_CFG, (uint32_t)cfg->ecc_cfg, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_READ_LOCATION_n(0), (uint32_t)cfg->addr_loc_0, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| cmd_list_ptr = qpic_nand_add_cmd_ce(cfg, cmd_list_ptr); |
| |
| return cmd_list_ptr; |
| } |
| |
| static int |
| qpic_nand_block_isbad_exec(struct cfg_params *params, |
| uint8_t *bad_block) |
| { |
| |
| struct cmd_element *cmd_list_ptr = ce_array; |
| struct cmd_element *cmd_list_ptr_start = ce_array; |
| uint8_t desc_flags = BAM_DESC_NWD_FLAG | BAM_DESC_CMD_FLAG |
| | BAM_DESC_LOCK_FLAG | BAM_DESC_INT_FLAG; |
| int num_desc = 0; |
| uint32_t status = 0; |
| int nand_ret = NANDC_RESULT_SUCCESS; |
| |
| cmd_list_ptr = qpic_nand_add_isbad_cmd_ce(params, cmd_list_ptr); |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| desc_flags); |
| |
| num_desc++; |
| |
| /* Add Data desc */ |
| bam_add_desc(&bam, |
| DATA_PRODUCER_PIPE_INDEX, |
| (unsigned char *)PA((addr_t)bad_block), |
| 4, |
| BAM_DESC_INT_FLAG); |
| |
| qpic_nand_wait_for_cmd_exec(num_desc); |
| |
| status = qpic_nand_read_reg(NAND_FLASH_STATUS, 0, cmd_list_ptr); |
| |
| nand_ret = qpic_nand_check_status(status); |
| |
| /* Dummy read to unlock pipe. */ |
| status = qpic_nand_read_reg(NAND_FLASH_STATUS, BAM_DESC_UNLOCK_FLAG, cmd_list_ptr); |
| |
| if (nand_ret) |
| return NANDC_RESULT_FAILURE; |
| |
| qpic_nand_wait_for_data(DATA_PRODUCER_PIPE_INDEX); |
| |
| return nand_ret; |
| } |
| |
| static int |
| qpic_nand_block_isbad(unsigned page) |
| { |
| unsigned cwperpage; |
| struct cfg_params params; |
| uint8_t bad_block[4]; |
| unsigned nand_ret = NANDC_RESULT_SUCCESS; |
| uint32_t blk = page / flash.num_pages_per_blk; |
| |
| if (bbtbl[blk] == NAND_BAD_BLK_VALUE_IS_GOOD) |
| return NANDC_RESULT_SUCCESS; |
| else if (bbtbl[blk] == NAND_BAD_BLK_VALUE_IS_BAD) |
| return NANDC_RESULT_BAD_BLOCK; |
| else |
| { |
| /* Read the bad block value from the flash. |
| * Bad block value is stored in the first page of the block. |
| */ |
| /* Read the first page in the block. */ |
| cwperpage = flash.cws_per_page; |
| |
| /* Read page cmd */ |
| params.cmd = NAND_CMD_PAGE_READ_ECC; |
| /* Clear the CW per page bits */ |
| params.cfg0 = cfg0_raw & ~(7U << NAND_DEV0_CFG0_CW_PER_PAGE_SHIFT); |
| params.cfg1 = cfg1_raw; |
| /* addr0 - Write column addr + few bits in row addr upto 32 bits. */ |
| params.addr0 = (page << 16) | (USER_DATA_BYTES_PER_CW * cwperpage); |
| |
| /* addr1 - Write rest of row addr. |
| * This will be all 0s. |
| */ |
| params.addr1 = (page >> 16) & 0xff; |
| params.addr_loc_0 = NAND_RD_LOC_OFFSET(0); |
| params.addr_loc_0 |= NAND_RD_LOC_LAST_BIT(1); |
| params.addr_loc_0 |= NAND_RD_LOC_SIZE(4); /* Read 4 bytes */ |
| params.ecc_cfg = ecc_bch_cfg | 0x1; /* Disable ECC */ |
| params.exec = 1; |
| |
| if (qpic_nand_block_isbad_exec(¶ms, bad_block)) |
| { |
| dprintf(CRITICAL, |
| "Could not read bad block value\n"); |
| return NANDC_RESULT_FAILURE; |
| } |
| |
| if (flash.widebus) |
| { |
| if (bad_block[0] != 0xFF && bad_block[1] != 0xFF) |
| { |
| bbtbl[blk] = NAND_BAD_BLK_VALUE_IS_BAD; |
| nand_ret = NANDC_RESULT_BAD_BLOCK; |
| } |
| } |
| else if (bad_block[0] != 0xFF) |
| { |
| bbtbl[blk] = NAND_BAD_BLK_VALUE_IS_BAD; |
| nand_ret = NANDC_RESULT_BAD_BLOCK; |
| } |
| else |
| bbtbl[blk] = NAND_BAD_BLK_VALUE_IS_GOOD; |
| |
| return nand_ret; |
| } |
| } |
| |
| /* Function to erase a block on the nand. |
| * page: Starting page address for the block. |
| */ |
| static int |
| qpic_nand_blk_erase(uint32_t page) |
| { |
| struct cfg_params cfg; |
| struct cmd_element *cmd_list_ptr = ce_array; |
| struct cmd_element *cmd_list_ptr_start = ce_array; |
| uint32_t status; |
| int num_desc = 0; |
| uint32_t blk_addr = page / flash.num_pages_per_blk; |
| int nand_ret; |
| |
| /* Erase only if the block is not bad */ |
| if (qpic_nand_block_isbad(page)) |
| { |
| dprintf(CRITICAL, |
| "NAND Erase error: Block address belongs to bad block: %d\n", |
| blk_addr); |
| return NANDC_RESULT_FAILURE; |
| } |
| |
| /* Fill in params for the erase flash cmd */ |
| cfg.addr0 = page; |
| cfg.addr1 = 0; |
| /* Clear CW_PER_PAGE in cfg0 */ |
| cfg.cfg0 = cfg0 & ~(7U << NAND_DEV0_CFG0_CW_PER_PAGE_SHIFT); |
| cfg.cfg1 = cfg1; |
| cfg.cmd = NAND_CMD_BLOCK_ERASE; |
| cfg.exec = 1; |
| |
| cmd_list_ptr = qpic_nand_add_cmd_ce(&cfg, cmd_list_ptr); |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| BAM_DESC_NWD_FLAG | BAM_DESC_CMD_FLAG | BAM_DESC_INT_FLAG | BAM_DESC_LOCK_FLAG); |
| |
| cmd_list_ptr_start = cmd_list_ptr; |
| num_desc++; |
| |
| qpic_nand_wait_for_cmd_exec(num_desc); |
| |
| status = qpic_nand_read_reg(NAND_FLASH_STATUS, 0, cmd_list_ptr); |
| |
| cmd_list_ptr++; |
| cmd_list_ptr_start = cmd_list_ptr; |
| |
| /* QPIC controller automatically sends |
| * GET_STATUS cmd to the nand card because |
| * of the configuration programmed. |
| * Read the result of GET_STATUS cmd. |
| */ |
| cmd_list_ptr = qpic_nand_add_read_n_reset_status_ce(cmd_list_ptr, &status, 1); |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| BAM_DESC_INT_FLAG | BAM_DESC_CMD_FLAG) ; |
| |
| num_desc = 1; |
| qpic_nand_wait_for_cmd_exec(num_desc); |
| |
| status = qpic_nand_check_status(status); |
| |
| /* Dummy read to unlock pipe. */ |
| nand_ret = qpic_nand_read_reg(NAND_FLASH_STATUS, BAM_DESC_UNLOCK_FLAG, cmd_list_ptr); |
| |
| /* Check for status errors*/ |
| if (status) |
| { |
| dprintf(CRITICAL, |
| "NAND Erase error: Block address belongs to bad block: %d\n", |
| blk_addr); |
| return NANDC_RESULT_FAILURE; |
| } |
| |
| /* Check for PROG_ERASE_OP_RESULT bit for the result of erase operation. */ |
| if (!(status & PROG_ERASE_OP_RESULT)) |
| return NANDC_RESULT_SUCCESS; |
| |
| return NANDC_RESULT_FAILURE; |
| } |
| |
| /* Return num of desc added. */ |
| static void |
| qpic_nand_add_wr_page_cws_cmd_desc(struct cfg_params *cfg, |
| uint32_t status[], |
| enum nand_cfg_value cfg_mode) |
| { |
| struct cmd_element *cmd_list_ptr = ce_array; |
| struct cmd_element *cmd_list_ptr_start = ce_array; |
| uint32_t ecc; |
| int num_desc = 0; |
| int int_flag = 0; |
| |
| if (cfg_mode == NAND_CFG) |
| ecc = ecc_bch_cfg; |
| else |
| ecc = ecc_bch_cfg | 0x1; /* Disable ECC */ |
| |
| /* Add ECC configuration */ |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV0_ECC_CFG, |
| (uint32_t)ecc, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| cmd_list_ptr = qpic_nand_add_addr_n_cfg_ce(cfg, cmd_list_ptr); |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_FLASH_CMD, |
| (uint32_t)cfg->cmd, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| BAM_DESC_CMD_FLAG | BAM_DESC_LOCK_FLAG); |
| |
| num_desc++; |
| |
| /* Add CE for all the CWs */ |
| for (unsigned i = 0; i < flash.cws_per_page; i++) |
| { |
| cmd_list_ptr_start = cmd_list_ptr; |
| int_flag = BAM_DESC_INT_FLAG; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_EXEC_CMD, (uint32_t)cfg->exec, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| BAM_DESC_NWD_FLAG | BAM_DESC_CMD_FLAG); |
| |
| num_desc++; |
| cmd_list_ptr_start = cmd_list_ptr; |
| |
| /* Set interrupt bit only for the last CW */ |
| if (i == flash.cws_per_page - 1) |
| { |
| cmd_list_ptr = qpic_nand_add_read_n_reset_status_ce(cmd_list_ptr, |
| &status[i], |
| 1); |
| } |
| else |
| cmd_list_ptr = qpic_nand_add_read_n_reset_status_ce(cmd_list_ptr, |
| &status[i], |
| 0); |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| int_flag | BAM_DESC_CMD_FLAG); |
| num_desc++; |
| |
| qpic_nand_wait_for_cmd_exec(num_desc); |
| |
| status[i] = qpic_nand_check_status(status[i]); |
| |
| num_desc = 0; |
| } |
| return; |
| } |
| |
| void |
| qpic_add_wr_page_cws_data_desc(const void *buffer, |
| enum nand_cfg_value cfg_mode, |
| const void *spareaddr) |
| { |
| int len; |
| int flags; |
| uint32_t start; |
| unsigned num_desc = 0; |
| |
| for( unsigned i = 0; i < flash.cws_per_page; i++) |
| { |
| flags = 0; |
| |
| /* Set the interrupt flag on the last CW write for the page. */ |
| if( i == flash.cws_per_page - 1) |
| flags |= BAM_DESC_INT_FLAG; |
| |
| if (cfg_mode != NAND_CFG_RAW) |
| { |
| start = (uint32_t)buffer + i * DATA_BYTES_IN_IMG_PER_CW; |
| |
| if (i < (flash.cws_per_page - 1)) |
| { |
| len = DATA_BYTES_IN_IMG_PER_CW; |
| flags |= BAM_DESC_EOT_FLAG; |
| } |
| else |
| { |
| /* Allow space for spare bytes in the last page */ |
| len = USER_DATA_BYTES_PER_CW - ((flash.cws_per_page - 1) << 2); |
| flags = 0; |
| } |
| } |
| else |
| { |
| start = (uint32_t)buffer; |
| len = flash.cw_size; |
| flags |= BAM_DESC_EOT_FLAG; |
| } |
| bam_add_one_desc(&bam, DATA_CONSUMER_PIPE_INDEX, (unsigned char*)PA(start), len, flags); |
| num_desc++; |
| |
| if ((i == (flash.cws_per_page - 1)) && (cfg_mode == NAND_CFG)) |
| { |
| /* write extra data */ |
| start = (uint32_t)spareaddr; |
| len = (flash.cws_per_page << 2); |
| flags = BAM_DESC_EOT_FLAG | BAM_DESC_INT_FLAG; |
| bam_add_one_desc(&bam, DATA_CONSUMER_PIPE_INDEX, (unsigned char*)PA(start), len, flags); |
| num_desc++; |
| } |
| } |
| |
| bam_sys_gen_event(&bam, DATA_CONSUMER_PIPE_INDEX, num_desc); |
| } |
| |
| static nand_result_t |
| qpic_nand_write_page(uint32_t pg_addr, |
| enum nand_cfg_value cfg_mode, |
| const void* buffer, |
| const void* spareaddr) |
| { |
| struct cfg_params cfg; |
| uint32_t status[QPIC_NAND_MAX_CWS_IN_PAGE]; |
| int nand_ret = NANDC_RESULT_SUCCESS; |
| |
| if (cfg_mode == NAND_CFG_RAW) |
| { |
| cfg.cfg0 = cfg0_raw; |
| cfg.cfg1 = cfg1_raw; |
| } |
| else |
| { |
| cfg.cfg0 = cfg0; |
| cfg.cfg1 = cfg1; |
| } |
| |
| cfg.cmd = NAND_CMD_PRG_PAGE; |
| cfg.exec = 1; |
| |
| cfg.addr0 = pg_addr << 16; |
| cfg.addr1 = (pg_addr >> 16) & 0xff; |
| |
| qpic_add_wr_page_cws_data_desc(buffer, cfg_mode, spareaddr); |
| |
| qpic_nand_add_wr_page_cws_cmd_desc(&cfg, status, cfg_mode); |
| |
| /* Check for errors */ |
| for(unsigned i = 0; i < flash.cws_per_page; i++) |
| { |
| nand_ret = qpic_nand_check_status(status[i]); |
| if (nand_ret) |
| { |
| dprintf(CRITICAL, |
| "Failed to write CW %d for page: %d\n", |
| i, pg_addr); |
| break; |
| } |
| } |
| |
| /* Wait for data to be available */ |
| qpic_nand_wait_for_data(DATA_CONSUMER_PIPE_INDEX); |
| |
| return nand_ret; |
| } |
| |
| static int |
| qpic_nand_mark_badblock(uint32_t page) |
| { |
| char empty_buf[NAND_CW_SIZE_8_BIT_ECC]; |
| |
| memset(empty_buf, 0, NAND_CW_SIZE_8_BIT_ECC); |
| |
| /* Going to first page of the block */ |
| if (page & flash.num_pages_per_blk_mask) |
| page = page - (page & flash.num_pages_per_blk_mask); |
| |
| return qpic_nand_write_page(page, NAND_CFG_RAW, empty_buf, 0); |
| } |
| |
| static void |
| qpic_nand_non_onfi_probe(struct flash_info *flash) |
| { |
| int dev_found = 0; |
| unsigned index; |
| uint32_t ecc_bits; |
| |
| /* Read the nand id. */ |
| qpic_nand_fetch_id(flash); |
| |
| /* Check if we support the device */ |
| for (index = 0; index < (ARRAY_SIZE(supported_flash)); index++) |
| { |
| if ((flash->id & supported_flash[index].mask) == |
| (supported_flash[index].flash_id & (supported_flash[index].mask))) |
| { |
| dev_found = 1; |
| break; |
| } |
| } |
| |
| if (dev_found) |
| { |
| flash->page_size = supported_flash[index].pagesize; |
| flash->block_size = supported_flash[index].blksize; |
| flash->spare_size = supported_flash[index].oobsize; |
| ecc_bits = supported_flash[index].ecc_8_bits; |
| |
| /* Make sure that the block size and page size are defined. */ |
| ASSERT(flash->block_size); |
| ASSERT(flash->page_size); |
| |
| flash->num_blocks = supported_flash[index].density; |
| flash->num_blocks /= (flash->block_size); |
| flash->num_pages_per_blk = flash->block_size / flash->page_size; |
| flash->num_pages_per_blk_mask = flash->num_pages_per_blk - 1; |
| |
| /* Look for 8bit BCH ECC Nand, TODO: ECC Correctability >= 8 */ |
| if (ecc_bits) |
| flash->ecc_width = NAND_WITH_8_BIT_ECC; |
| else |
| flash->ecc_width = NAND_WITH_4_BIT_ECC; |
| |
| flash->density = supported_flash[index].density; |
| flash->widebus = supported_flash[index].widebus; |
| |
| return; |
| } |
| |
| /* Flash device is not supported, print flash device info and halt */ |
| if (dev_found == 0) |
| { |
| dprintf(CRITICAL, "NAND device is not supported: nandid: 0x%x" |
| "maker=0x%02x device=0x%02x\n", |
| flash->id, |
| flash->vendor, |
| flash->device); |
| ASSERT(0); |
| } |
| |
| dprintf(INFO, "nandid: 0x%x maker=0x%02x device=0x%02x page_size=%d\n", |
| flash->id, |
| flash->vendor, |
| flash->device, |
| flash->page_size); |
| |
| dprintf(INFO, "spare_size=%d block_size=%d num_blocks=%d\n", |
| flash->spare_size, |
| flash->block_size, |
| flash->num_blocks); |
| } |
| |
| void |
| qpic_nand_init(struct qpic_nand_init_config *config) |
| { |
| uint32_t i; |
| int nand_ret; |
| |
| qpic_nand_clock_init(); |
| |
| nand_base = config->nand_base; |
| |
| qpic_bam_init(config); |
| |
| qpic_nand_non_onfi_probe(&flash); |
| |
| /* Save the RAW and read/write configs */ |
| qpic_nand_save_config(&flash); |
| |
| flash_spare_bytes = (unsigned char *)malloc(flash.spare_size); |
| |
| if (flash_spare_bytes == NULL) |
| { |
| dprintf(CRITICAL, "Failed to allocate memory for spare bytes\n"); |
| return; |
| } |
| |
| /* Create a bad block table */ |
| bbtbl = (uint8_t *) malloc(sizeof(uint8_t) * flash.num_blocks); |
| |
| if (bbtbl == NULL) |
| { |
| dprintf(CRITICAL, "Failed to allocate memory for bad block table\n"); |
| return; |
| } |
| |
| for (i = 0; i < flash.num_blocks; i++) |
| bbtbl[i] = NAND_BAD_BLK_VALUE_NOT_READ; |
| |
| /* Set aside contiguous memory for reads/writes. |
| * This is needed as the BAM transfers only work with |
| * physically contiguous buffers. |
| * We will copy any data to be written/ to be read from |
| * nand to this buffer and this buffer will be submitted to BAM. |
| */ |
| rdwr_buf = (uint8_t*) malloc(flash.page_size + flash.spare_size); |
| |
| if (rdwr_buf == NULL) |
| { |
| dprintf(CRITICAL, "Failed to allocate memory for page reads or writes\n"); |
| return; |
| } |
| |
| } |
| |
| unsigned |
| flash_page_size(void) |
| { |
| return flash.page_size; |
| } |
| |
| unsigned |
| flash_block_size(void) |
| { |
| return flash.block_size; |
| } |
| |
| unsigned |
| flash_num_blocks(void) |
| { |
| return flash.num_blocks; |
| } |
| |
| struct ptable * |
| flash_get_ptable(void) |
| { |
| return flash_ptable; |
| } |
| |
| void |
| qpic_nand_uninit() |
| { |
| bam_pipe_reset(&bam, DATA_PRODUCER_PIPE_INDEX); |
| bam_pipe_reset(&bam, DATA_CONSUMER_PIPE_INDEX); |
| bam_pipe_reset(&bam, CMD_PIPE_INDEX); |
| |
| } |
| void |
| flash_set_ptable(struct ptable *new_ptable) |
| { |
| ASSERT(flash_ptable == NULL && new_ptable != NULL); |
| flash_ptable = new_ptable; |
| } |
| |
| /* Note: No support for raw reads. */ |
| static int |
| qpic_nand_read_page(uint32_t page, unsigned char* buffer, unsigned char* spareaddr) |
| { |
| struct cfg_params params; |
| uint32_t ecc; |
| uint32_t flash_sts[QPIC_NAND_MAX_CWS_IN_PAGE]; |
| uint32_t buffer_sts[QPIC_NAND_MAX_CWS_IN_PAGE]; |
| uint32_t addr_loc_0; |
| uint32_t addr_loc_1; |
| struct cmd_element *cmd_list_ptr = ce_array; |
| struct cmd_element *cmd_list_ptr_start = ce_array; |
| uint32_t num_cmd_desc = 0; |
| uint32_t num_data_desc = 0; |
| uint32_t status; |
| uint32_t i; |
| int nand_ret = NANDC_RESULT_SUCCESS; |
| /* UD bytes in last CW is 512 - cws_per_page *4. |
| * Since each of the CW read earlier reads 4 spare bytes. |
| */ |
| uint16_t ud_bytes_in_last_cw = USER_DATA_BYTES_PER_CW - ((flash.cws_per_page - 1) << 2); |
| uint16_t oob_bytes = DATA_BYTES_IN_IMG_PER_CW - ud_bytes_in_last_cw; |
| |
| params.addr0 = page << 16; |
| params.addr1 = (page >> 16) & 0xff; |
| params.cfg0 = cfg0; |
| params.cfg1 = cfg1; |
| params.cmd = NAND_CMD_PAGE_READ_ALL; |
| params.exec = 1; |
| ecc = ecc_bch_cfg; |
| |
| /* Read all the Data bytes in the first 3 CWs. */ |
| addr_loc_0 = NAND_RD_LOC_OFFSET(0); |
| addr_loc_0 |= NAND_RD_LOC_SIZE(DATA_BYTES_IN_IMG_PER_CW); |
| addr_loc_0 |= NAND_RD_LOC_LAST_BIT(1); |
| |
| |
| addr_loc_1 = NAND_RD_LOC_OFFSET(ud_bytes_in_last_cw); |
| addr_loc_1 |= NAND_RD_LOC_SIZE(oob_bytes); |
| addr_loc_1 |= NAND_RD_LOC_LAST_BIT(1); |
| |
| status = qpic_nand_block_isbad(page); |
| |
| if (status) |
| return status; |
| |
| /* Reset and Configure erased CW/page detection controller */ |
| qpic_nand_erased_status_reset(ce_array, BAM_DESC_LOCK_FLAG); |
| |
| for (i = 0; i < flash.cws_per_page; i++) |
| { |
| num_cmd_desc = 0; |
| num_data_desc = 0; |
| |
| if (i == 0) |
| { |
| cmd_list_ptr = qpic_nand_add_addr_n_cfg_ce(¶ms, cmd_list_ptr); |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_DEV0_ECC_CFG,(uint32_t)ecc, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| } |
| else |
| cmd_list_ptr_start = cmd_list_ptr; |
| |
| bam_add_cmd_element(cmd_list_ptr, NAND_FLASH_CMD, (uint32_t)params.cmd, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| if (i == flash.cws_per_page - 1) |
| { |
| addr_loc_0 = NAND_RD_LOC_OFFSET(0); |
| addr_loc_0 |= NAND_RD_LOC_SIZE(ud_bytes_in_last_cw); |
| addr_loc_0 |= NAND_RD_LOC_LAST_BIT(0); |
| |
| /* Write addr loc 1 only for the last CW. */ |
| bam_add_cmd_element(cmd_list_ptr, NAND_READ_LOCATION_n(1), (uint32_t)addr_loc_1, CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| /* Add Data desc */ |
| bam_add_one_desc(&bam, |
| DATA_PRODUCER_PIPE_INDEX, |
| (unsigned char *)PA((addr_t)buffer), |
| ud_bytes_in_last_cw, |
| 0); |
| num_data_desc++; |
| |
| bam_add_one_desc(&bam, |
| DATA_PRODUCER_PIPE_INDEX, |
| (unsigned char *)PA((addr_t)spareaddr), |
| oob_bytes, |
| BAM_DESC_INT_FLAG); |
| num_data_desc++; |
| |
| bam_sys_gen_event(&bam, DATA_PRODUCER_PIPE_INDEX, num_data_desc); |
| } |
| else |
| { |
| /* Add Data desc */ |
| bam_add_one_desc(&bam, |
| DATA_PRODUCER_PIPE_INDEX, |
| (unsigned char *)PA((addr_t)buffer), |
| DATA_BYTES_IN_IMG_PER_CW, |
| BAM_DESC_INT_FLAG); |
| num_data_desc++; |
| bam_sys_gen_event(&bam, DATA_PRODUCER_PIPE_INDEX, num_data_desc); |
| } |
| |
| /* Write addr loc 0. */ |
| bam_add_cmd_element(cmd_list_ptr, |
| NAND_READ_LOCATION_n(0), |
| (uint32_t)addr_loc_0, |
| CE_WRITE_TYPE); |
| |
| cmd_list_ptr++; |
| bam_add_cmd_element(cmd_list_ptr, |
| NAND_EXEC_CMD, |
| (uint32_t)params.exec, |
| CE_WRITE_TYPE); |
| cmd_list_ptr++; |
| |
| /* Enqueue the desc for the above commands */ |
| bam_add_one_desc(&bam, |
| CMD_PIPE_INDEX, |
| (unsigned char*)cmd_list_ptr_start, |
| PA((uint32_t)cmd_list_ptr - (uint32_t)cmd_list_ptr_start), |
| BAM_DESC_NWD_FLAG | BAM_DESC_CMD_FLAG | BAM_DESC_INT_FLAG); |
| num_cmd_desc++; |
| |
| qpic_nand_wait_for_cmd_exec(num_cmd_desc); |
| |
| qpic_nand_wait_for_data(DATA_PRODUCER_PIPE_INDEX); |
| |
| /* Save the status registers. */ |
| flash_sts[i] = qpic_nand_read_reg(NAND_FLASH_STATUS, 0, cmd_list_ptr++); |
| buffer_sts[i] = qpic_nand_read_reg(NAND_BUFFER_STATUS, 0, cmd_list_ptr++); |
| |
| flash_sts[i] = qpic_nand_check_status(flash_sts[i]); |
| |
| buffer += DATA_BYTES_IN_IMG_PER_CW; |
| } |
| |
| /* Read the buffer status again so that we can unlock the bam with this desc. */ |
| buffer_sts[--i] = qpic_nand_read_reg(NAND_BUFFER_STATUS, BAM_DESC_UNLOCK_FLAG, cmd_list_ptr++); |
| |
| /* Check status */ |
| for (i = 0; i < flash.cws_per_page ; i ++) |
| if (flash_sts[i]) |
| { |
| nand_ret = NANDC_RESULT_BAD_PAGE; |
| dprintf(CRITICAL, "NAND page read failed. page: %x\n", page); |
| goto qpic_nand_read_page_error; |
| } |
| |
| qpic_nand_read_page_error: |
| return nand_ret; |
| } |
| |
| /* Function to read a flash partition. |
| * ptn : Partition to read. |
| * extra_per_page : Spare data to be read. |
| * offset : Num of bytes offset into the partition. |
| * data : Buffer to read the data into. |
| * bytes : Num of bytes to be read. |
| */ |
| /* TODO: call this func read_partition. */ |
| int |
| flash_read_ext(struct ptentry *ptn, |
| unsigned extra_per_page, |
| unsigned offset, |
| void *data, |
| unsigned bytes) |
| { |
| uint32_t page = |
| (ptn->start * flash.num_pages_per_blk) + (offset / flash.page_size); |
| uint32_t lastpage = (ptn->start + ptn->length) * flash.num_pages_per_blk; |
| uint32_t count = |
| (bytes + flash.page_size - 1 + extra_per_page) / (flash.page_size + |
| extra_per_page); |
| uint32_t *spare = (unsigned *)flash_spare_bytes; |
| uint32_t errors = 0; |
| unsigned char *image = data; |
| int result = 0; |
| uint32_t current_block = |
| (page - (page & flash.num_pages_per_blk_mask)) / flash.num_pages_per_blk; |
| uint32_t start_block = ptn->start; |
| uint32_t start_block_count = 0; |
| uint32_t isbad = 0; |
| |
| /* Verify first byte is at page boundary. */ |
| if (offset & (flash.page_size - 1)) |
| { |
| dprintf(CRITICAL, "Read request start not at page boundary: %d\n", |
| offset); |
| return NANDC_RESULT_PARAM_INVALID; |
| } |
| |
| /* Adjust page offset based on number of bad blocks from start to current page */ |
| if (start_block < current_block) |
| { |
| start_block_count = (current_block - start_block); |
| while (start_block_count |
| && (start_block < (ptn->start + ptn->length))) |
| { |
| isbad = qpic_nand_block_isbad(page); |
| if (isbad) |
| page += flash.num_pages_per_blk; |
| else |
| start_block_count--; |
| start_block++; |
| } |
| } |
| |
| while ((page < lastpage) && !start_block_count) |
| { |
| if (count == 0) |
| { |
| dprintf(SPEW, "flash_read_image: success (%d errors)\n", |
| errors); |
| return NANDC_RESULT_SUCCESS; |
| } |
| |
| result = qpic_nand_read_page(page, rdwr_buf, (unsigned char *)spare); |
| |
| if (result == NANDC_RESULT_BAD_PAGE) |
| { |
| /* bad page, go to next page. */ |
| page++; |
| errors++; |
| continue; |
| } |
| else if (result == NANDC_RESULT_BAD_BLOCK) |
| { |
| /* bad block, go to next block same offset. */ |
| page += flash.num_pages_per_blk; |
| errors++; |
| continue; |
| } |
| |
| /* Copy the read page into correct location. */ |
| memcpy(image, rdwr_buf, flash.page_size); |
| |
| page++; |
| image += flash.page_size; |
| /* Copy spare bytes to image */ |
| memcpy(image, spare, extra_per_page); |
| image += extra_per_page; |
| count -= 1; |
| } |
| |
| /* could not find enough valid pages before we hit the end */ |
| dprintf(CRITICAL, "flash_read_image: failed (%d errors)\n", errors); |
| return NANDC_RESULT_FAILURE; |
| } |
| |
| int |
| flash_erase(struct ptentry *ptn) |
| { |
| int ret = 0; |
| |
| ret = qpic_nand_blk_erase(ptn->start * flash.num_pages_per_blk); |
| |
| if (ret) |
| dprintf(CRITICAL, "Erase operation failed \n"); |
| |
| return ret; |
| } |
| |
| int |
| flash_ecc_bch_enabled() |
| { |
| return (flash.ecc_width == NAND_WITH_4_BIT_ECC)? 0 : 1; |
| } |
| |
| int |
| flash_write(struct ptentry *ptn, |
| unsigned extra_per_page, |
| const void *data, |
| unsigned bytes) |
| { |
| uint32_t page = ptn->start * flash.num_pages_per_blk; |
| uint32_t lastpage = (ptn->start + ptn->length) * flash.num_pages_per_blk; |
| uint32_t *spare = (unsigned *)flash_spare_bytes; |
| const unsigned char *image = data; |
| uint32_t wsize = flash.page_size + extra_per_page; |
| int r; |
| |
| memset(spare, 0xff, (flash.spare_size / flash.cws_per_page)); |
| |
| while (bytes > 0) |
| { |
| if (bytes < wsize) |
| { |
| dprintf(CRITICAL, |
| "flash_write_image: image undersized (%d < %d)\n", |
| bytes, |
| wsize); |
| return -1; |
| } |
| |
| if (page >= lastpage) |
| { |
| dprintf(CRITICAL, "flash_write_image: out of space\n"); |
| return -1; |
| } |
| |
| if ((page & flash.num_pages_per_blk_mask) == 0) |
| { |
| if (qpic_nand_blk_erase(page)) |
| { |
| dprintf(INFO, |
| "flash_write_image: bad block @ %d\n", |
| page / flash.num_pages_per_blk); |
| |
| page += flash.num_pages_per_blk; |
| continue; |
| } |
| } |
| |
| memcpy(rdwr_buf, image, flash.page_size); |
| |
| if (extra_per_page) |
| { |
| memcpy(rdwr_buf + flash.page_size, image + flash.page_size, extra_per_page); |
| r = qpic_nand_write_page(page, |
| NAND_CFG, |
| rdwr_buf, |
| rdwr_buf + flash.page_size); |
| } |
| else |
| { |
| r = qpic_nand_write_page(page, NAND_CFG, rdwr_buf, spare); |
| } |
| |
| if (r) |
| { |
| dprintf(INFO, |
| "flash_write_image: write failure @ page %d (src %d)\n", |
| page, |
| image - (const unsigned char *)data); |
| |
| image -= (page & flash.num_pages_per_blk_mask) * wsize; |
| bytes += (page & flash.num_pages_per_blk_mask) * wsize; |
| page &= ~flash.num_pages_per_blk_mask; |
| if (qpic_nand_blk_erase(page)) |
| { |
| dprintf(INFO, |
| "flash_write_image: erase failure @ page %d\n", |
| page); |
| } |
| |
| qpic_nand_mark_badblock(page); |
| |
| dprintf(INFO, |
| "flash_write_image: restart write @ page %d (src %d)\n", |
| page, image - (const unsigned char *)data); |
| |
| page += flash.num_pages_per_blk; |
| continue; |
| } |
| page++; |
| image += wsize; |
| bytes -= wsize; |
| } |
| |
| /* erase any remaining pages in the partition */ |
| page = (page + flash.num_pages_per_blk_mask) & (~flash.num_pages_per_blk_mask); |
| |
| while (page < lastpage) |
| { |
| if (qpic_nand_blk_erase(page)) |
| { |
| dprintf(INFO, "flash_write_image: bad block @ %d\n", |
| page / flash.num_pages_per_blk); |
| } |
| page += flash.num_pages_per_blk; |
| } |
| |
| dprintf(INFO, "flash_write_image: success\n"); |
| return 0; |
| } |