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author | Zachary T Welch <zw@superlucidity.net> | 2009-12-01 22:37:11 -0800 |
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committer | Zachary T Welch <zw@superlucidity.net> | 2009-12-02 23:27:09 -0800 |
commit | e1ec02bb055fa356b058dddc0a15710e0fdc9870 (patch) | |
tree | 62110f0c0262314d7d0d9312e46f3113441a48ea /src/flash/mx3_nand.c | |
parent | d5e4e23f9a5b1074cd298d5386e638a9fa78b1ad (diff) | |
download | riscv-openocd-e1ec02bb055fa356b058dddc0a15710e0fdc9870.zip riscv-openocd-e1ec02bb055fa356b058dddc0a15710e0fdc9870.tar.gz riscv-openocd-e1ec02bb055fa356b058dddc0a15710e0fdc9870.tar.bz2 |
move nand drivers to src/flash/nand/
Moves NAND drivers to src/flash/nand/.
Adds src/flash/nand/Makefile.am.
Builds libocdflashnand.la.
Diffstat (limited to 'src/flash/mx3_nand.c')
-rw-r--r-- | src/flash/mx3_nand.c | 879 |
1 files changed, 0 insertions, 879 deletions
diff --git a/src/flash/mx3_nand.c b/src/flash/mx3_nand.c deleted file mode 100644 index 1dc4fcb..0000000 --- a/src/flash/mx3_nand.c +++ /dev/null @@ -1,879 +0,0 @@ - -/*************************************************************************** - * Copyright (C) 2009 by Alexei Babich * - * Rezonans plc., Chelyabinsk, Russia * - * impatt@mail.ru * - * * - * 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. * - * * - * You should have received a copy of the GNU General Public License * - * along with this program; if not, write to the * - * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - ***************************************************************************/ - -/* - * Freescale iMX3* OpenOCD NAND Flash controller support. - * - * Many thanks to Ben Dooks for writing s3c24xx driver. - */ - -/* -driver tested with STMicro NAND512W3A @imx31 -tested "nand probe #", "nand erase # 0 #", "nand dump # file 0 #", "nand write # file 0" -get_next_halfword_from_sram_buffer() not tested -*/ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "mx3_nand.h" - -static const char target_not_halted_err_msg[] = - "target must be halted to use mx3 NAND flash controller"; -static const char data_block_size_err_msg[] = - "minimal granularity is one half-word, %" PRId32 " is incorrect"; -static const char sram_buffer_bounds_err_msg[] = - "trying to access out of SRAM buffer bound (addr=0x%" PRIx32 ")"; -static const char get_status_register_err_msg[] = "can't get NAND status"; -static uint32_t in_sram_address; -unsigned char sign_of_sequental_byte_read; - -static int test_iomux_settings (struct target * target, uint32_t value, - uint32_t mask, const char *text); -static int initialize_nf_controller (struct nand_device *nand); -static int get_next_byte_from_sram_buffer (struct target * target, uint8_t * value); -static int get_next_halfword_from_sram_buffer (struct target * target, - uint16_t * value); -static int poll_for_complete_op (struct target * target, const char *text); -static int validate_target_state (struct nand_device *nand); -static int do_data_output (struct nand_device *nand); - -static int imx31_command (struct nand_device *nand, uint8_t command); -static int imx31_address (struct nand_device *nand, uint8_t address); -static int imx31_controller_ready (struct nand_device *nand, int tout); - -NAND_DEVICE_COMMAND_HANDLER(imx31_nand_device_command) -{ - struct mx3_nf_controller *mx3_nf_info; - mx3_nf_info = malloc (sizeof (struct mx3_nf_controller)); - if (mx3_nf_info == NULL) - { - LOG_ERROR ("no memory for nand controller"); - return ERROR_FAIL; - } - - nand->controller_priv = mx3_nf_info; - - mx3_nf_info->target = get_target (CMD_ARGV[1]); - if (mx3_nf_info->target == NULL) - { - LOG_ERROR ("target '%s' not defined", CMD_ARGV[1]); - return ERROR_FAIL; - } - if (CMD_ARGC < 3) - { - LOG_ERROR ("use \"nand device imx31 target noecc|hwecc\""); - return ERROR_FAIL; - } - /* - * check hwecc requirements - */ - { - int hwecc_needed; - hwecc_needed = strcmp (CMD_ARGV[2], "hwecc"); - if (hwecc_needed == 0) - { - mx3_nf_info->flags.hw_ecc_enabled = 1; - } - else - { - mx3_nf_info->flags.hw_ecc_enabled = 0; - } - } - - mx3_nf_info->optype = MX3_NF_DATAOUT_PAGE; - mx3_nf_info->fin = MX3_NF_FIN_NONE; - mx3_nf_info->flags.target_little_endian = - (mx3_nf_info->target->endianness == TARGET_LITTLE_ENDIAN); - /* - * testing host endianess - */ - { - int x = 1; - if (*(char *) &x == 1) - { - mx3_nf_info->flags.host_little_endian = 1; - } - else - { - mx3_nf_info->flags.host_little_endian = 0; - } - } - return ERROR_OK; -} - -static int imx31_init (struct nand_device *nand) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - - { - /* - * validate target state - */ - int validate_target_result; - validate_target_result = validate_target_state(nand); - if (validate_target_result != ERROR_OK) - { - return validate_target_result; - } - } - - { - uint16_t buffsize_register_content; - target_read_u16 (target, MX3_NF_BUFSIZ, &buffsize_register_content); - mx3_nf_info->flags.one_kb_sram = !(buffsize_register_content & 0x000f); - } - - { - uint32_t pcsr_register_content; - target_read_u32 (target, MX3_PCSR, &pcsr_register_content); - if (!nand->bus_width) - { - nand->bus_width = - (pcsr_register_content & 0x80000000) ? 16 : 8; - } - else - { - pcsr_register_content |= - ((nand->bus_width == 16) ? 0x80000000 : 0x00000000); - target_write_u32 (target, MX3_PCSR, pcsr_register_content); - } - - if (!nand->page_size) - { - nand->page_size = - (pcsr_register_content & 0x40000000) ? 2048 : 512; - } - else - { - pcsr_register_content |= - ((nand->page_size == 2048) ? 0x40000000 : 0x00000000); - target_write_u32 (target, MX3_PCSR, pcsr_register_content); - } - if (mx3_nf_info->flags.one_kb_sram && (nand->page_size == 2048)) - { - LOG_ERROR - ("NAND controller have only 1 kb SRAM, so pagesize 2048 is incompatible with it"); - } - } - - { - uint32_t cgr_register_content; - target_read_u32 (target, MX3_CCM_CGR2, &cgr_register_content); - if (!(cgr_register_content & 0x00000300)) - { - LOG_ERROR ("clock gating to EMI disabled"); - return ERROR_FAIL; - } - } - - { - uint32_t gpr_register_content; - target_read_u32 (target, MX3_GPR, &gpr_register_content); - if (gpr_register_content & 0x00000060) - { - LOG_ERROR ("pins mode overrided by GPR"); - return ERROR_FAIL; - } - } - - { - /* - * testing IOMUX settings; must be in "functional-mode output and - * functional-mode input" mode - */ - int test_iomux; - test_iomux = ERROR_OK; - test_iomux |= - test_iomux_settings (target, 0x43fac0c0, 0x7f7f7f00, "d0,d1,d2"); - test_iomux |= - test_iomux_settings (target, 0x43fac0c4, 0x7f7f7f7f, "d3,d4,d5,d6"); - test_iomux |= - test_iomux_settings (target, 0x43fac0c8, 0x0000007f, "d7"); - if (nand->bus_width == 16) - { - test_iomux |= - test_iomux_settings (target, 0x43fac0c8, 0x7f7f7f00, - "d8,d9,d10"); - test_iomux |= - test_iomux_settings (target, 0x43fac0cc, 0x7f7f7f7f, - "d11,d12,d13,d14"); - test_iomux |= - test_iomux_settings (target, 0x43fac0d0, 0x0000007f, "d15"); - } - test_iomux |= - test_iomux_settings (target, 0x43fac0d0, 0x7f7f7f00, - "nfwp,nfce,nfrb"); - test_iomux |= - test_iomux_settings (target, 0x43fac0d4, 0x7f7f7f7f, - "nfwe,nfre,nfale,nfcle"); - if (test_iomux != ERROR_OK) - { - return ERROR_FAIL; - } - } - - initialize_nf_controller (nand); - - { - int retval; - uint16_t nand_status_content; - retval = ERROR_OK; - retval |= imx31_command (nand, NAND_CMD_STATUS); - retval |= imx31_address (nand, 0x00); - retval |= do_data_output (nand); - if (retval != ERROR_OK) - { - LOG_ERROR (get_status_register_err_msg); - return ERROR_FAIL; - } - target_read_u16 (target, MX3_NF_MAIN_BUFFER0, &nand_status_content); - if (!(nand_status_content & 0x0080)) - { - /* - * is host-big-endian correctly ?? - */ - LOG_INFO ("NAND read-only"); - mx3_nf_info->flags.nand_readonly = 1; - } - else - { - mx3_nf_info->flags.nand_readonly = 0; - } - } - return ERROR_OK; -} - -static int imx31_read_data (struct nand_device *nand, void *data) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - { - /* - * validate target state - */ - int validate_target_result; - validate_target_result = validate_target_state (nand); - if (validate_target_result != ERROR_OK) - { - return validate_target_result; - } - } - - { - /* - * get data from nand chip - */ - int try_data_output_from_nand_chip; - try_data_output_from_nand_chip = do_data_output (nand); - if (try_data_output_from_nand_chip != ERROR_OK) - { - return try_data_output_from_nand_chip; - } - } - - if (nand->bus_width == 16) - { - get_next_halfword_from_sram_buffer (target, data); - } - else - { - get_next_byte_from_sram_buffer (target, data); - } - - return ERROR_OK; -} - -static int imx31_write_data (struct nand_device *nand, uint16_t data) -{ - LOG_ERROR ("write_data() not implemented"); - return ERROR_NAND_OPERATION_FAILED; -} - -static int imx31_nand_ready (struct nand_device *nand, int timeout) -{ - return imx31_controller_ready (nand, timeout); -} - -static int imx31_reset (struct nand_device *nand) -{ - /* - * validate target state - */ - int validate_target_result; - validate_target_result = validate_target_state (nand); - if (validate_target_result != ERROR_OK) - { - return validate_target_result; - } - initialize_nf_controller (nand); - return ERROR_OK; -} - -static int imx31_command (struct nand_device *nand, uint8_t command) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - { - /* - * validate target state - */ - int validate_target_result; - validate_target_result = validate_target_state (nand); - if (validate_target_result != ERROR_OK) - { - return validate_target_result; - } - } - - switch (command) - { - case NAND_CMD_READOOB: - command = NAND_CMD_READ0; - in_sram_address = MX3_NF_SPARE_BUFFER0; /* set read point for - * data_read() and - * read_block_data() to - * spare area in SRAM - * buffer */ - break; - case NAND_CMD_READ1: - command = NAND_CMD_READ0; - /* - * offset == one half of page size - */ - in_sram_address = - MX3_NF_MAIN_BUFFER0 + (nand->page_size >> 1); - default: - in_sram_address = MX3_NF_MAIN_BUFFER0; - } - - target_write_u16 (target, MX3_NF_FCMD, command); - /* - * start command input operation (set MX3_NF_BIT_OP_DONE==0) - */ - target_write_u16 (target, MX3_NF_CFG2, MX3_NF_BIT_OP_FCI); - { - int poll_result; - poll_result = poll_for_complete_op (target, "command"); - if (poll_result != ERROR_OK) - { - return poll_result; - } - } - /* - * reset cursor to begin of the buffer - */ - sign_of_sequental_byte_read = 0; - switch (command) - { - case NAND_CMD_READID: - mx3_nf_info->optype = MX3_NF_DATAOUT_NANDID; - mx3_nf_info->fin = MX3_NF_FIN_DATAOUT; - break; - case NAND_CMD_STATUS: - mx3_nf_info->optype = MX3_NF_DATAOUT_NANDSTATUS; - mx3_nf_info->fin = MX3_NF_FIN_DATAOUT; - break; - case NAND_CMD_READ0: - mx3_nf_info->fin = MX3_NF_FIN_DATAOUT; - mx3_nf_info->optype = MX3_NF_DATAOUT_PAGE; - break; - default: - mx3_nf_info->optype = MX3_NF_DATAOUT_PAGE; - } - return ERROR_OK; -} - -static int imx31_address (struct nand_device *nand, uint8_t address) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - { - /* - * validate target state - */ - int validate_target_result; - validate_target_result = validate_target_state (nand); - if (validate_target_result != ERROR_OK) - { - return validate_target_result; - } - } - - target_write_u16 (target, MX3_NF_FADDR, address); - /* - * start address input operation (set MX3_NF_BIT_OP_DONE==0) - */ - target_write_u16 (target, MX3_NF_CFG2, MX3_NF_BIT_OP_FAI); - { - int poll_result; - poll_result = poll_for_complete_op (target, "address"); - if (poll_result != ERROR_OK) - { - return poll_result; - } - } - return ERROR_OK; -} - -static int imx31_controller_ready (struct nand_device *nand, int tout) -{ - uint16_t poll_complete_status; - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - - { - /* - * validate target state - */ - int validate_target_result; - validate_target_result = validate_target_state (nand); - if (validate_target_result != ERROR_OK) - { - return validate_target_result; - } - } - - do - { - target_read_u16 (target, MX3_NF_CFG2, &poll_complete_status); - if (poll_complete_status & MX3_NF_BIT_OP_DONE) - { - return tout; - } - alive_sleep (1); - } - while (tout-- > 0); - return tout; -} - -static int imx31_write_page (struct nand_device *nand, uint32_t page, - uint8_t * data, uint32_t data_size, uint8_t * oob, - uint32_t oob_size) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - - if (data_size % 2) - { - LOG_ERROR (data_block_size_err_msg, data_size); - return ERROR_NAND_OPERATION_FAILED; - } - if (oob_size % 2) - { - LOG_ERROR (data_block_size_err_msg, oob_size); - return ERROR_NAND_OPERATION_FAILED; - } - if (!data) - { - LOG_ERROR ("nothing to program"); - return ERROR_NAND_OPERATION_FAILED; - } - { - /* - * validate target state - */ - int retval; - retval = validate_target_state (nand); - if (retval != ERROR_OK) - { - return retval; - } - } - { - int retval = ERROR_OK; - retval |= imx31_command(nand, NAND_CMD_SEQIN); - retval |= imx31_address(nand, 0x00); - retval |= imx31_address(nand, page & 0xff); - retval |= imx31_address(nand, (page >> 8) & 0xff); - if (nand->address_cycles >= 4) - { - retval |= imx31_address (nand, (page >> 16) & 0xff); - if (nand->address_cycles >= 5) - { - retval |= imx31_address (nand, (page >> 24) & 0xff); - } - } - target_write_buffer (target, MX3_NF_MAIN_BUFFER0, data_size, data); - if (oob) - { - if (mx3_nf_info->flags.hw_ecc_enabled) - { - /* - * part of spare block will be overrided by hardware - * ECC generator - */ - LOG_DEBUG - ("part of spare block will be overrided by hardware ECC generator"); - } - target_write_buffer (target, MX3_NF_SPARE_BUFFER0, oob_size, - oob); - } - /* - * start data input operation (set MX3_NF_BIT_OP_DONE==0) - */ - target_write_u16 (target, MX3_NF_CFG2, MX3_NF_BIT_OP_FDI); - { - int poll_result; - poll_result = poll_for_complete_op (target, "data input"); - if (poll_result != ERROR_OK) - { - return poll_result; - } - } - retval |= imx31_command (nand, NAND_CMD_PAGEPROG); - if (retval != ERROR_OK) - { - return retval; - } - - /* - * check status register - */ - { - uint16_t nand_status_content; - retval = ERROR_OK; - retval |= imx31_command(nand, NAND_CMD_STATUS); - retval |= imx31_address(nand, 0x00); - retval |= do_data_output(nand); - if (retval != ERROR_OK) - { - LOG_ERROR (get_status_register_err_msg); - return retval; - } - target_read_u16 (target, MX3_NF_MAIN_BUFFER0, &nand_status_content); - if (nand_status_content & 0x0001) - { - /* - * is host-big-endian correctly ?? - */ - return ERROR_NAND_OPERATION_FAILED; - } - } - } - return ERROR_OK; -} - -static int imx31_read_page (struct nand_device *nand, uint32_t page, - uint8_t * data, uint32_t data_size, uint8_t * oob, - uint32_t oob_size) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - - if (data_size % 2) - { - LOG_ERROR (data_block_size_err_msg, data_size); - return ERROR_NAND_OPERATION_FAILED; - } - if (oob_size % 2) - { - LOG_ERROR (data_block_size_err_msg, oob_size); - return ERROR_NAND_OPERATION_FAILED; - } - - { - /* - * validate target state - */ - int retval; - retval = validate_target_state(nand); - if (retval != ERROR_OK) - { - return retval; - } - } - { - int retval = ERROR_OK; - retval |= imx31_command(nand, NAND_CMD_READ0); - retval |= imx31_address(nand, 0x00); - retval |= imx31_address(nand, page & 0xff); - retval |= imx31_address(nand, (page >> 8) & 0xff); - if (nand->address_cycles >= 4) - { - retval |= imx31_address(nand, (page >> 16) & 0xff); - if (nand->address_cycles >= 5) - { - retval |= imx31_address(nand, (page >> 24) & 0xff); - retval |= imx31_command(nand, NAND_CMD_READSTART); - } - } - retval |= do_data_output (nand); - if (retval != ERROR_OK) - { - return retval; - } - - if (data) - { - target_read_buffer (target, MX3_NF_MAIN_BUFFER0, data_size, - data); - } - if (oob) - { - target_read_buffer (target, MX3_NF_SPARE_BUFFER0, oob_size, - oob); - } - } - return ERROR_OK; -} - -static int test_iomux_settings (struct target * target, uint32_t address, - uint32_t mask, const char *text) -{ - uint32_t register_content; - target_read_u32 (target, address, ®ister_content); - if ((register_content & mask) != (0x12121212 & mask)) - { - LOG_ERROR ("IOMUX for {%s} is bad", text); - return ERROR_FAIL; - } - return ERROR_OK; -} - -static int initialize_nf_controller (struct nand_device *nand) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - /* - * resets NAND flash controller in zero time ? I dont know. - */ - target_write_u16 (target, MX3_NF_CFG1, MX3_NF_BIT_RESET_EN); - { - uint16_t work_mode; - work_mode = MX3_NF_BIT_INT_DIS; /* disable interrupt */ - if (target->endianness == TARGET_BIG_ENDIAN) - { - work_mode |= MX3_NF_BIT_BE_EN; - } - if (mx3_nf_info->flags.hw_ecc_enabled) - { - work_mode |= MX3_NF_BIT_ECC_EN; - } - target_write_u16 (target, MX3_NF_CFG1, work_mode); - } - /* - * unlock SRAM buffer for write; 2 mean "Unlock", other values means "Lock" - */ - target_write_u16 (target, MX3_NF_BUFCFG, 2); - { - uint16_t temp; - target_read_u16 (target, MX3_NF_FWP, &temp); - if ((temp & 0x0007) == 1) - { - LOG_ERROR ("NAND flash is tight-locked, reset needed"); - return ERROR_FAIL; - } - - } - /* - * unlock NAND flash for write - */ - target_write_u16 (target, MX3_NF_FWP, 4); - target_write_u16 (target, MX3_NF_LOCKSTART, 0x0000); - target_write_u16 (target, MX3_NF_LOCKEND, 0xFFFF); - /* - * 0x0000 means that first SRAM buffer @0xB800_0000 will be used - */ - target_write_u16 (target, MX3_NF_BUFADDR, 0x0000); - /* - * address of SRAM buffer - */ - in_sram_address = MX3_NF_MAIN_BUFFER0; - sign_of_sequental_byte_read = 0; - return ERROR_OK; -} - -static int get_next_byte_from_sram_buffer (struct target * target, uint8_t * value) -{ - static uint8_t even_byte = 0; - /* - * host-big_endian ?? - */ - if (sign_of_sequental_byte_read == 0) - { - even_byte = 0; - } - if (in_sram_address > MX3_NF_LAST_BUFFER_ADDR) - { - LOG_ERROR (sram_buffer_bounds_err_msg, in_sram_address); - *value = 0; - sign_of_sequental_byte_read = 0; - even_byte = 0; - return ERROR_NAND_OPERATION_FAILED; - } - else - { - uint16_t temp; - target_read_u16 (target, in_sram_address, &temp); - if (even_byte) - { - *value = temp >> 8; - even_byte = 0; - in_sram_address += 2; - } - else - { - *value = temp & 0xff; - even_byte = 1; - } - } - sign_of_sequental_byte_read = 1; - return ERROR_OK; -} - -static int get_next_halfword_from_sram_buffer (struct target * target, - uint16_t * value) -{ - if (in_sram_address > MX3_NF_LAST_BUFFER_ADDR) - { - LOG_ERROR (sram_buffer_bounds_err_msg, in_sram_address); - *value = 0; - return ERROR_NAND_OPERATION_FAILED; - } - else - { - target_read_u16 (target, in_sram_address, value); - in_sram_address += 2; - } - return ERROR_OK; -} - -static int poll_for_complete_op (struct target * target, const char *text) -{ - uint16_t poll_complete_status; - for (int poll_cycle_count = 0; poll_cycle_count < 100; poll_cycle_count++) - { - usleep (25); - target_read_u16 (target, MX3_NF_CFG2, &poll_complete_status); - if (poll_complete_status & MX3_NF_BIT_OP_DONE) - { - break; - } - } - if (!(poll_complete_status & MX3_NF_BIT_OP_DONE)) - { - LOG_ERROR ("%s sending timeout", text); - return ERROR_NAND_OPERATION_FAILED; - } - return ERROR_OK; -} - -static int validate_target_state (struct nand_device *nand) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR (target_not_halted_err_msg); - return ERROR_NAND_OPERATION_FAILED; - } - - if (mx3_nf_info->flags.target_little_endian != - (target->endianness == TARGET_LITTLE_ENDIAN)) - { - /* - * endianness changed after NAND controller probed - */ - return ERROR_NAND_OPERATION_FAILED; - } - return ERROR_OK; -} - -static int do_data_output (struct nand_device *nand) -{ - struct mx3_nf_controller *mx3_nf_info = nand->controller_priv; - struct target *target = mx3_nf_info->target; - switch (mx3_nf_info->fin) - { - case MX3_NF_FIN_DATAOUT: - /* - * start data output operation (set MX3_NF_BIT_OP_DONE==0) - */ - target_write_u16 (target, MX3_NF_CFG2, - MX3_NF_BIT_DATAOUT_TYPE (mx3_nf_info-> - optype)); - { - int poll_result; - poll_result = poll_for_complete_op (target, "data output"); - if (poll_result != ERROR_OK) - { - return poll_result; - } - } - mx3_nf_info->fin = MX3_NF_FIN_NONE; - /* - * ECC stuff - */ - if ((mx3_nf_info->optype == MX3_NF_DATAOUT_PAGE) - && mx3_nf_info->flags.hw_ecc_enabled) - { - uint16_t ecc_status; - target_read_u16 (target, MX3_NF_ECCSTATUS, &ecc_status); - switch (ecc_status & 0x000c) - { - case 1 << 2: - LOG_DEBUG - ("main area readed with 1 (correctable) error"); - break; - case 2 << 2: - LOG_DEBUG - ("main area readed with more than 1 (incorrectable) error"); - return ERROR_NAND_OPERATION_FAILED; - break; - } - switch (ecc_status & 0x0003) - { - case 1: - LOG_DEBUG - ("spare area readed with 1 (correctable) error"); - break; - case 2: - LOG_DEBUG - ("main area readed with more than 1 (incorrectable) error"); - return ERROR_NAND_OPERATION_FAILED; - break; - } - } - break; - case MX3_NF_FIN_NONE: - break; - } - return ERROR_OK; -} - -struct nand_flash_controller imx31_nand_flash_controller = { - .name = "imx31", - .nand_device_command = &imx31_nand_device_command, - .init = &imx31_init, - .reset = &imx31_reset, - .command = &imx31_command, - .address = &imx31_address, - .write_data = &imx31_write_data, - .read_data = &imx31_read_data, - .write_page = &imx31_write_page, - .read_page = &imx31_read_page, - .controller_ready = &imx31_controller_ready, - .nand_ready = &imx31_nand_ready, - }; |