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Diffstat (limited to 'src/flash/nand/mx2.c')
-rw-r--r--src/flash/nand/mx2.c198
1 files changed, 97 insertions, 101 deletions
diff --git a/src/flash/nand/mx2.c b/src/flash/nand/mx2.c
index 6c3c550..fca8ea2 100644
--- a/src/flash/nand/mx2.c
+++ b/src/flash/nand/mx2.c
@@ -29,7 +29,7 @@
/*
* driver tested with Samsung K9F2G08UXA and Numonyx/ST NAND02G-B2D @imx27
- * tested "nand probe #", "nand erase # 0 #", "nand dump # file 0 #",
+ * tested "nand probe #", "nand erase # 0 #", "nand dump # file 0 #",
* "nand write # file 0", "nand verify"
*
* get_next_halfword_from_sram_buffer() not tested
@@ -51,7 +51,7 @@
* front-end to estimate progression of the global read/write
*/
#undef _MX2_PRINT_STAT
-//#define _MX2_PRINT_STAT
+/* #define _MX2_PRINT_STAT */
static const char target_not_halted_err_msg[] =
"target must be halted to use mx2 NAND flash controller";
@@ -64,10 +64,9 @@ static uint32_t in_sram_address;
static unsigned char sign_of_sequental_byte_read;
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 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);
@@ -79,23 +78,24 @@ NAND_DEVICE_COMMAND_HANDLER(imx27_nand_device_command)
struct mx2_nf_controller *mx2_nf_info;
int hwecc_needed;
int x;
+
mx2_nf_info = malloc(sizeof(struct mx2_nf_controller));
if (mx2_nf_info == NULL) {
LOG_ERROR("no memory for nand controller");
return ERROR_FAIL;
}
-
nand->controller_priv = mx2_nf_info;
+
if (CMD_ARGC < 3) {
LOG_ERROR("use \"nand device imx27 target noecc|hwecc\"");
return ERROR_FAIL;
}
+
/*
* check hwecc requirements
*/
-
hwecc_needed = strcmp(CMD_ARGV[2], "hwecc");
- if (hwecc_needed == 0)
+ if (hwecc_needed == 0)
mx2_nf_info->flags.hw_ecc_enabled = 1;
else
mx2_nf_info->flags.hw_ecc_enabled = 0;
@@ -104,6 +104,7 @@ NAND_DEVICE_COMMAND_HANDLER(imx27_nand_device_command)
mx2_nf_info->fin = MX2_NF_FIN_NONE;
mx2_nf_info->flags.target_little_endian =
(nand->target->endianness == TARGET_LITTLE_ENDIAN);
+
/*
* testing host endianness
*/
@@ -139,11 +140,11 @@ static int imx27_init(struct nand_device *nand)
if (!nand->bus_width) {
/* bus_width not yet defined. Read it from MX2_FMCR */
nand->bus_width =
- (pcsr_register_content & MX2_FMCR_NF_16BIT_SEL) ? 16 : 8;
+ (pcsr_register_content & MX2_FMCR_NF_16BIT_SEL) ? 16 : 8;
} else {
/* bus_width forced in soft. Sync it to MX2_FMCR */
pcsr_register_content |=
- ((nand->bus_width == 16) ? MX2_FMCR_NF_16BIT_SEL : 0x00000000);
+ ((nand->bus_width == 16) ? MX2_FMCR_NF_16BIT_SEL : 0x00000000);
target_write_u32(target, MX2_FMCR, pcsr_register_content);
}
if (nand->bus_width == 16)
@@ -152,11 +153,10 @@ static int imx27_init(struct nand_device *nand)
LOG_DEBUG("MX2_NF : bus is 8-bit width");
if (!nand->page_size) {
- nand->page_size =
- (pcsr_register_content & MX2_FMCR_NF_FMS) ? 2048 : 512;
+ nand->page_size = (pcsr_register_content & MX2_FMCR_NF_FMS) ? 2048 : 512;
} else {
pcsr_register_content |=
- ((nand->page_size == 2048) ? MX2_FMCR_NF_FMS : 0x00000000);
+ ((nand->page_size == 2048) ? MX2_FMCR_NF_FMS : 0x00000000);
target_write_u32(target, MX2_FMCR, pcsr_register_content);
}
if (mx2_nf_info->flags.one_kb_sram && (nand->page_size == 2048)) {
@@ -204,14 +204,14 @@ static int imx27_read_data(struct nand_device *nand, void *data)
try_data_output_from_nand_chip = do_data_output(nand);
if (try_data_output_from_nand_chip != ERROR_OK) {
LOG_ERROR("imx27_read_data : read data failed : '%x'",
- try_data_output_from_nand_chip);
+ try_data_output_from_nand_chip);
return try_data_output_from_nand_chip;
}
if (nand->bus_width == 16)
- get_next_halfword_from_sram_buffer(target, data);
+ get_next_halfword_from_sram_buffer(target, data);
else
- get_next_byte_from_sram_buffer(target, data);
+ get_next_byte_from_sram_buffer(target, data);
return ERROR_OK;
}
@@ -230,7 +230,7 @@ static int imx27_reset(struct nand_device *nand)
int validate_target_result;
validate_target_result = validate_target_state(nand);
if (validate_target_result != ERROR_OK)
- return validate_target_result;
+ return validate_target_result;
initialize_nf_controller(nand);
return ERROR_OK;
}
@@ -248,21 +248,20 @@ static int imx27_command(struct nand_device *nand, uint8_t command)
if (validate_target_result != ERROR_OK)
return validate_target_result;
- switch(command) {
+ switch (command) {
case NAND_CMD_READOOB:
command = NAND_CMD_READ0;
/* set read point for data_read() and read_block_data() to
* spare area in SRAM buffer
*/
- in_sram_address = MX2_NF_SPARE_BUFFER0;
+ in_sram_address = MX2_NF_SPARE_BUFFER0;
break;
case NAND_CMD_READ1:
command = NAND_CMD_READ0;
/*
* offset == one half of page size
*/
- in_sram_address =
- MX2_NF_MAIN_BUFFER0 + (nand->page_size >> 1);
+ in_sram_address = MX2_NF_MAIN_BUFFER0 + (nand->page_size >> 1);
break;
default:
in_sram_address = MX2_NF_MAIN_BUFFER0;
@@ -282,7 +281,7 @@ static int imx27_command(struct nand_device *nand, uint8_t command)
*/
sign_of_sequental_byte_read = 0;
/* Handle special read command and adjust NF_CFG2(FDO) */
- switch(command) {
+ switch (command) {
case NAND_CMD_READID:
mx2_nf_info->optype = MX2_NF_DATAOUT_NANDID;
mx2_nf_info->fin = MX2_NF_FIN_DATAOUT;
@@ -290,8 +289,8 @@ static int imx27_command(struct nand_device *nand, uint8_t command)
case NAND_CMD_STATUS:
mx2_nf_info->optype = MX2_NF_DATAOUT_NANDSTATUS;
mx2_nf_info->fin = MX2_NF_FIN_DATAOUT;
- target_write_u16 (target, MX2_NF_BUFADDR, 0);
- in_sram_address = 0;
+ target_write_u16 (target, MX2_NF_BUFADDR, 0);
+ in_sram_address = 0;
break;
case NAND_CMD_READ0:
mx2_nf_info->fin = MX2_NF_FIN_DATAOUT;
@@ -354,8 +353,8 @@ static int imx27_nand_ready(struct nand_device *nand, int tout)
}
static int imx27_write_page(struct nand_device *nand, uint32_t page,
- uint8_t * data, uint32_t data_size, uint8_t * oob,
- uint32_t oob_size)
+ uint8_t *data, uint32_t data_size,
+ uint8_t *oob, uint32_t oob_size)
{
struct mx2_nf_controller *mx2_nf_info = nand->controller_priv;
struct target *target = nand->target;
@@ -386,12 +385,12 @@ static int imx27_write_page(struct nand_device *nand, uint32_t page,
sign_of_sequental_byte_read = 0;
retval = ERROR_OK;
retval |= imx27_command(nand, NAND_CMD_SEQIN);
- retval |= imx27_address(nand, 0); //col
- retval |= imx27_address(nand, 0); //col
- retval |= imx27_address(nand, page & 0xff); //page address
- retval |= imx27_address(nand, (page >> 8) & 0xff); //page address
- retval |= imx27_address(nand, (page >> 16) & 0xff); //page address
-
+ retval |= imx27_address(nand, 0); /* col */
+ retval |= imx27_address(nand, 0); /* col */
+ retval |= imx27_address(nand, page & 0xff); /* page address */
+ retval |= imx27_address(nand, (page >> 8) & 0xff); /* page address */
+ retval |= imx27_address(nand, (page >> 16) & 0xff); /* page address */
+
target_write_buffer(target, MX2_NF_MAIN_BUFFER0, data_size, data);
if (oob) {
if (mx2_nf_info->flags.hw_ecc_enabled) {
@@ -402,20 +401,17 @@ static int imx27_write_page(struct nand_device *nand, uint32_t page,
LOG_DEBUG("part of spare block will be overrided "
"by hardware ECC generator");
}
- target_write_buffer(target, MX2_NF_SPARE_BUFFER0, oob_size,
- oob);
+ target_write_buffer(target, MX2_NF_SPARE_BUFFER0, oob_size, oob);
}
- //BI-swap - work-around of imx27 NFC for NAND device with page == 2kb
+ /* BI-swap - work-around of imx27 NFC for NAND device with page == 2kb */
target_read_u16(target, MX2_NF_MAIN_BUFFER3 + 464, &swap1);
if (oob) {
- LOG_ERROR("Due to NFC Bug, oob is not correctly implemented "
- "in mx2 driver");
+ LOG_ERROR("Due to NFC Bug, oob is not correctly implemented in mx2 driver");
return ERROR_NAND_OPERATION_FAILED;
}
- //target_read_u16 (target, MX2_NF_SPARE_BUFFER3 + 4, &swap2);
- swap2 = 0xffff; //Spare buffer unused forced to 0xffff
- new_swap1 = (swap1 & 0xFF00) | (swap2 >> 8);
- swap2 = (swap1 << 8) | (swap2 & 0xFF);
+ swap2 = 0xffff; /* Spare buffer unused forced to 0xffff */
+ new_swap1 = (swap1 & 0xFF00) | (swap2 >> 8);
+ swap2 = (swap1 << 8) | (swap2 & 0xFF);
target_write_u16(target, MX2_NF_MAIN_BUFFER3 + 464, new_swap1);
target_write_u16(target, MX2_NF_SPARE_BUFFER3 + 4, swap2);
@@ -427,19 +423,19 @@ static int imx27_write_page(struct nand_device *nand, uint32_t page,
poll_result = poll_for_complete_op(target, "data input");
if (poll_result != ERROR_OK)
return poll_result;
-
+
target_write_u16(target, MX2_NF_BUFADDR, 1);
target_write_u16(target, MX2_NF_CFG2, MX2_NF_BIT_OP_FDI);
poll_result = poll_for_complete_op(target, "data input");
if (poll_result != ERROR_OK)
return poll_result;
-
+
target_write_u16(target, MX2_NF_BUFADDR, 2);
target_write_u16(target, MX2_NF_CFG2, MX2_NF_BIT_OP_FDI);
poll_result = poll_for_complete_op(target, "data input");
if (poll_result != ERROR_OK)
return poll_result;
-
+
target_write_u16(target, MX2_NF_BUFADDR, 3);
target_write_u16(target, MX2_NF_CFG2, MX2_NF_BIT_OP_FDI);
poll_result = poll_for_complete_op(target, "data input");
@@ -453,23 +449,23 @@ static int imx27_write_page(struct nand_device *nand, uint32_t page,
/*
* check status register
*/
- retval = ERROR_OK;
- retval |= imx27_command(nand, NAND_CMD_STATUS);
- target_write_u16 (target, MX2_NF_BUFADDR, 0);
- mx2_nf_info->optype = MX2_NF_DATAOUT_NANDSTATUS;
- mx2_nf_info->fin = MX2_NF_FIN_DATAOUT;
- retval |= do_data_output(nand);
- if (retval != ERROR_OK) {
- LOG_ERROR (get_status_register_err_msg);
- return retval;
- }
- target_read_u16 (target, MX2_NF_MAIN_BUFFER0, &nand_status_content);
- if (nand_status_content & 0x0001) {
- /*
- * page not correctly written
- */
- return ERROR_NAND_OPERATION_FAILED;
- }
+ retval = ERROR_OK;
+ retval |= imx27_command(nand, NAND_CMD_STATUS);
+ target_write_u16 (target, MX2_NF_BUFADDR, 0);
+ mx2_nf_info->optype = MX2_NF_DATAOUT_NANDSTATUS;
+ mx2_nf_info->fin = MX2_NF_FIN_DATAOUT;
+ retval |= do_data_output(nand);
+ if (retval != ERROR_OK) {
+ LOG_ERROR(get_status_register_err_msg);
+ return retval;
+ }
+ target_read_u16(target, MX2_NF_MAIN_BUFFER0, &nand_status_content);
+ if (nand_status_content & 0x0001) {
+ /*
+ * page not correctly written
+ */
+ return ERROR_NAND_OPERATION_FAILED;
+ }
#ifdef _MX2_PRINT_STAT
LOG_INFO("%d bytes newly written", data_size);
#endif
@@ -477,20 +473,21 @@ static int imx27_write_page(struct nand_device *nand, uint32_t page,
}
static int imx27_read_page(struct nand_device *nand, uint32_t page,
- uint8_t * data, uint32_t data_size, uint8_t * oob,
- uint32_t oob_size)
+ uint8_t *data, uint32_t data_size,
+ uint8_t *oob, uint32_t oob_size)
{
struct mx2_nf_controller *mx2_nf_info = nand->controller_priv;
struct target *target = nand->target;
int retval;
uint16_t swap1, swap2, new_swap1;
+
if (data_size % 2) {
- LOG_ERROR(data_block_size_err_msg, data_size);
- return ERROR_NAND_OPERATION_FAILED;
+ 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;
+ LOG_ERROR(data_block_size_err_msg, oob_size);
+ return ERROR_NAND_OPERATION_FAILED;
}
/*
@@ -503,15 +500,15 @@ static int imx27_read_page(struct nand_device *nand, uint32_t page,
/* Reset address_cycles before imx27_command ?? */
retval = imx27_command(nand, NAND_CMD_READ0);
if (retval != ERROR_OK) return retval;
- retval = imx27_address(nand, 0); //col
+ retval = imx27_address(nand, 0); /* col */
if (retval != ERROR_OK) return retval;
- retval = imx27_address(nand, 0); //col
+ retval = imx27_address(nand, 0); /* col */
if (retval != ERROR_OK) return retval;
- retval = imx27_address(nand, page & 0xff); //page address
+ retval = imx27_address(nand, page & 0xff); /* page address */
if (retval != ERROR_OK) return retval;
- retval = imx27_address(nand, (page >> 8) & 0xff); //page address
+ retval = imx27_address(nand, (page >> 8) & 0xff); /* page address */
if (retval != ERROR_OK) return retval;
- retval = imx27_address(nand, (page >> 16) & 0xff); //page address
+ retval = imx27_address(nand, (page >> 16) & 0xff); /* page address */
if (retval != ERROR_OK) return retval;
retval = imx27_command(nand, NAND_CMD_READSTART);
if (retval != ERROR_OK) return retval;
@@ -523,7 +520,7 @@ static int imx27_read_page(struct nand_device *nand, uint32_t page,
LOG_ERROR("MX2_NF : Error reading page 0");
return retval;
}
- //Test nand page size to know how much MAIN_BUFFER must be written
+ /* Test nand page size to know how much MAIN_BUFFER must be written */
target_write_u16(target, MX2_NF_BUFADDR, 1);
mx2_nf_info->fin = MX2_NF_FIN_DATAOUT;
retval = do_data_output(nand);
@@ -545,19 +542,19 @@ static int imx27_read_page(struct nand_device *nand, uint32_t page,
LOG_ERROR("MX2_NF : Error reading page 3");
return retval;
}
- //BI-swap - work-around of imx27 NFC for NAND device with page == 2k
+ /* BI-swap - work-around of imx27 NFC for NAND device with page == 2k */
target_read_u16(target, MX2_NF_MAIN_BUFFER3 + 464, &swap1);
target_read_u16(target, MX2_NF_SPARE_BUFFER3 + 4, &swap2);
- new_swap1 = (swap1 & 0xFF00) | (swap2 >> 8);
- swap2 = (swap1 << 8) | (swap2 & 0xFF);
+ new_swap1 = (swap1 & 0xFF00) | (swap2 >> 8);
+ swap2 = (swap1 << 8) | (swap2 & 0xFF);
target_write_u16(target, MX2_NF_MAIN_BUFFER3 + 464, new_swap1);
target_write_u16(target, MX2_NF_SPARE_BUFFER3 + 4, swap2);
if (data)
target_read_buffer(target, MX2_NF_MAIN_BUFFER0, data_size, data);
if (oob)
- target_read_buffer(target, MX2_NF_SPARE_BUFFER0, oob_size,
- oob);
+ target_read_buffer(target, MX2_NF_SPARE_BUFFER0, oob_size, oob);
+
#ifdef _MX2_PRINT_STAT
if (data_size > 0) {
/* When Operation Status is read (when page is erased),
@@ -621,7 +618,7 @@ static int initialize_nf_controller(struct nand_device *nand)
return ERROR_OK;
}
-static int get_next_byte_from_sram_buffer(struct target * target, uint8_t * value)
+static int get_next_byte_from_sram_buffer(struct target *target, uint8_t *value)
{
static uint8_t even_byte = 0;
uint16_t temp;
@@ -630,7 +627,7 @@ static int get_next_byte_from_sram_buffer(struct target * target, uint8_t * valu
*/
if (sign_of_sequental_byte_read == 0)
even_byte = 0;
-
+
if (in_sram_address > MX2_NF_LAST_BUFFER_ADDR) {
LOG_ERROR(sram_buffer_bounds_err_msg, in_sram_address);
*value = 0;
@@ -652,8 +649,7 @@ static int get_next_byte_from_sram_buffer(struct target * target, uint8_t * valu
return ERROR_OK;
}
-static int get_next_halfword_from_sram_buffer(struct target * target,
- uint16_t * value)
+static int get_next_halfword_from_sram_buffer(struct target *target, uint16_t *value)
{
if (in_sram_address > MX2_NF_LAST_BUFFER_ADDR) {
LOG_ERROR(sram_buffer_bounds_err_msg, in_sram_address);
@@ -666,7 +662,7 @@ static int get_next_halfword_from_sram_buffer(struct target * target,
return ERROR_OK;
}
-static int poll_for_complete_op(struct target * target, const char *text)
+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++) {
@@ -693,8 +689,8 @@ static int validate_target_state(struct nand_device *nand)
return ERROR_NAND_OPERATION_FAILED;
}
- if (mx2_nf_info->flags.target_little_endian !=
- (target->endianness == TARGET_LITTLE_ENDIAN)) {
+ if (mx2_nf_info->flags.target_little_endian !=
+ (target->endianness == TARGET_LITTLE_ENDIAN)) {
/*
* endianness changed after NAND controller probed
*/
@@ -709,7 +705,7 @@ static int do_data_output(struct nand_device *nand)
struct target *target = nand->target;
int poll_result;
uint16_t ecc_status;
- switch(mx2_nf_info->fin) {
+ switch (mx2_nf_info->fin) {
case MX2_NF_FIN_DATAOUT:
/*
* start data output operation (set MX2_NF_BIT_OP_DONE==0)
@@ -725,16 +721,16 @@ static int do_data_output(struct nand_device *nand)
*/
if ((mx2_nf_info->optype == MX2_NF_DATAOUT_PAGE) && mx2_nf_info->flags.hw_ecc_enabled) {
target_read_u16(target, MX2_NF_ECCSTATUS, &ecc_status);
- switch(ecc_status & 0x000c) {
+ switch (ecc_status & 0x000c) {
case 1 << 2:
LOG_INFO("main area readed with 1 (correctable) error");
break;
case 2 << 2:
LOG_INFO("main area readed with more than 1 (incorrectable) error");
return ERROR_NAND_OPERATION_FAILED;
- break;
+ break;
}
- switch(ecc_status & 0x0003) {
+ switch (ecc_status & 0x0003) {
case 1:
LOG_INFO("spare area readed with 1 (correctable) error");
break;
@@ -752,15 +748,15 @@ static int do_data_output(struct nand_device *nand)
}
struct nand_flash_controller imx27_nand_flash_controller = {
- .name = "imx27",
- .nand_device_command = &imx27_nand_device_command,
- .init = &imx27_init,
- .reset = &imx27_reset,
- .command = &imx27_command,
- .address = &imx27_address,
- .write_data = &imx27_write_data,
- .read_data = &imx27_read_data,
- .write_page = &imx27_write_page,
- .read_page = &imx27_read_page,
- .nand_ready = &imx27_nand_ready,
+ .name = "imx27",
+ .nand_device_command = &imx27_nand_device_command,
+ .init = &imx27_init,
+ .reset = &imx27_reset,
+ .command = &imx27_command,
+ .address = &imx27_address,
+ .write_data = &imx27_write_data,
+ .read_data = &imx27_read_data,
+ .write_page = &imx27_write_page,
+ .read_page = &imx27_read_page,
+ .nand_ready = &imx27_nand_ready,
};
generated by cgit v1.1 at 2024-08-17 20:05:40 +0000