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fixed nand get-id to work

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added ECC checking code
This commit is contained in:
bushing 2009-02-01 01:34:11 -08:00
parent f2dd69f3d7
commit bb5862f67c
2 changed files with 17 additions and 28 deletions
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41
nand.c
View File

@ -40,6 +40,8 @@ type *name = (type*)(((u32)(_al__##name)) + ((alignment) - (( \
#define NAND_BUSY_MASK 0x80000000
#define NAND_FLAGS_IRQ 0x40000000
#define PAGE_SIZE 2048
#define PAGE_SPARE_SIZE 64
@ -111,35 +113,20 @@ int nand_reset(void)
return 0;
}
u32 nand_get_id(void) {
STACK_ALIGN(u8, idbuf, 0x40, 64);
__nand_wait();
NAND_debug("nand_get_id(%p) (pre)\n", idbuf);
memset(idbuf, 0x42, 4);
dc_flushrange(idbuf, 0x40);
void nand_get_id(u8 *idbuf) {
__nand_set_address(0,0);
NAND_debug("id = %02hx%02hx%02hx%02hx\n", idbuf[0], idbuf[1], idbuf[2], idbuf[3]);
dc_invalidaterange(idbuf, 0x40);
__nand_setup_dma(idbuf, (u8 *)-1);
nand_send_command(NAND_CHIPID, 1, 0x2000, 0x40);
__nand_wait();
NAND_debug("id = %02hx%02hx%02hx%02hx (post)\n", idbuf[0], idbuf[1], idbuf[2], idbuf[3]);
return idbuf[0] << 24 | idbuf[1] << 16 | idbuf[2] << 8 | idbuf[3];
nand_send_command(NAND_CHIPID, 1, NAND_FLAGS_IRQ | 0x2000, 0x40);
}
u32 nand_get_status(void) {
STACK_ALIGN(u8, status_buf, 0x40, 64);
void nand_get_status(u8 *status_buf) {
status_buf[0]=0;
dc_flushrange(status_buf, 0x40);
__nand_setup_dma(status_buf, (u8 *)-1);
nand_send_command(NAND_GETSTATUS, 0, 0x2000, 0x40);
__nand_wait();
dc_invalidaterange(status_buf, 0x40);
return status_buf[0];
__nand_setup_dma(status_buf, (u8 *)-1);
nand_send_command(NAND_GETSTATUS, 0, NAND_FLAGS_IRQ | 0x2000, 0x40);
}
void nand_read_page(u32 pageno, void *data, void *ecc) {
@ -151,7 +138,7 @@ void nand_read_page(u32 pageno, void *data, void *ecc) {
dc_invalidaterange(ecc, 0x50);
__nand_setup_dma(data, ecc);
nand_send_command(NAND_READ_POST, 0, 0x4000b000, 0x840);
nand_send_command(NAND_READ_POST, 0, NAND_FLAGS_IRQ | 0xb000, 0x840);
}
@ -162,9 +149,9 @@ void nand_write_page(u32 pageno, void *data, void *ecc) {
dc_flushrange(ecc, 0x40);
__nand_set_address(0, pageno);
__nand_setup_dma(data, ecc);
nand_send_command(NAND_WRITE_PRE, 0x1f, 0x40005000, 0x840);
nand_send_command(NAND_WRITE_PRE, 0x1f, NAND_FLAGS_IRQ | 0x5000, 0x840);
nand_send_command(NAND_WRITE_POST, 0, 0x40008000, 0x0);
nand_send_command(NAND_WRITE_POST, 0, NAND_FLAGS_IRQ | 0x8000, 0x0);
}
#endif
@ -173,7 +160,7 @@ void nand_erase_block(u32 pageno) {
NAND_debug("nand_erase_block(%d)\n", pageno);
__nand_set_address(0, pageno);
nand_send_command(NAND_ERASE_PRE, 0x1c, 0, 0);
nand_send_command(NAND_ERASE_POST, 0, 0x40008000, 0x0);
nand_send_command(NAND_ERASE_POST, 0, NAND_FLAGS_IRQ | 0x8000, 0x0);
}
#endif
@ -199,7 +186,9 @@ void nand_ipc(volatile ipc_request *req)
break;
case IPC_NAND_GETID:
ipc_post(req->code, req->tag, 1, nand_get_id());
ipc_code = req->code;
ipc_tag = req->tag;
nand_get_id((u8 *)req->args[0]);
break;
case IPC_NAND_READ:

4
nand.h
View File

@ -8,8 +8,8 @@ void nand_irq(void);
void nand_send_command(u32 command, u32 bitmask, u32 flags, u32 num_bytes);
int nand_reset(void);
u32 nand_get_id(void);
u32 nand_get_status(void);
void nand_get_id(u8 *);
void nand_get_status(u8 *);
void nand_read_page(u32 pageno, void *data, void *ecc);
void nand_write_page(u32 pageno, void *data, void *ecc);
void nand_erase_block(u32 pageno);