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enable erase and write commands

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turn on debugging, because something is wrong
with the status command -- sometimes it hangs, sometimes
it gives bogus results.
This commit is contained in:
bushing 2009-03-09 04:14:15 -07:00
parent 577f9aa316
commit 0a4f721ada
1 changed files with 12 additions and 9 deletions
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21
nand.c
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@ -10,13 +10,13 @@
#include "gecko.h" #include "gecko.h"
#include "types.h" #include "types.h"
//#define NAND_DEBUG 1 #define NAND_DEBUG 1
#undef NAND_SUPPORT_WRITE #define NAND_SUPPORT_WRITE 1
#undef NAND_SUPPORT_ERASE #define NAND_SUPPORT_ERASE 1
#ifdef NAND_DEBUG #ifdef NAND_DEBUG
# include "gecko.h" # include "gecko.h"
# define NAND_debug(f, arg...) gecko_printf("NAND: " f "\n", ##arg); # define NAND_debug(f, arg...) gecko_printf("NAND: " f, ##arg);
#else #else
# define NAND_debug(f, arg...) # define NAND_debug(f, arg...)
#endif #endif
@ -122,13 +122,13 @@ void nand_send_command(u32 command, u32 bitmask, u32 flags, u32 num_bytes) {
} }
void __nand_set_address(s32 page_off, s32 pageno) { void __nand_set_address(s32 page_off, s32 pageno) {
NAND_debug("nand_set_address: %d, %d\n", page_off, pageno); // NAND_debug("nand_set_address: %d, %d\n", page_off, pageno);
if (page_off != -1) __nand_write32(NAND_ADDR0, page_off); if (page_off != -1) __nand_write32(NAND_ADDR0, page_off);
if (pageno != -1) __nand_write32(NAND_ADDR1, pageno); if (pageno != -1) __nand_write32(NAND_ADDR1, pageno);
} }
void __nand_setup_dma(u8 *data, u8 *spare) { void __nand_setup_dma(u8 *data, u8 *spare) {
NAND_debug("nand_setup_dma: %p, %p\n", data, spare); // NAND_debug("nand_setup_dma: %p, %p\n", data, spare);
if (((s32)data) != -1) { if (((s32)data) != -1) {
__nand_write32(NAND_DATA, dma_addr(data)); __nand_write32(NAND_DATA, dma_addr(data));
} }
@ -169,10 +169,11 @@ void nand_get_status(u8 *status_buf) {
__nand_setup_dma(status_buf, (u8 *)-1); __nand_setup_dma(status_buf, (u8 *)-1);
nand_send_command(NAND_GETSTATUS, 0, NAND_FLAGS_IRQ | NAND_FLAGS_RD, 0x40); nand_send_command(NAND_GETSTATUS, 0, NAND_FLAGS_IRQ | NAND_FLAGS_RD, 0x40);
__nand_wait();
} }
void nand_read_page(u32 pageno, void *data, void *ecc) { void nand_read_page(u32 pageno, void *data, void *ecc) {
NAND_debug("nand_read_page(%u, %p, %p)\n", pageno, data, ecc); // NAND_debug("nand_read_page(%u, %p, %p)\n", pageno, data, ecc);
__nand_set_address(0, pageno); __nand_set_address(0, pageno);
nand_send_command(NAND_READ_PRE, 0x1f, 0, 0); nand_send_command(NAND_READ_PRE, 0x1f, 0, 0);
@ -191,7 +192,7 @@ void nand_wait() {
void nand_write_page(u32 pageno, void *data, void *ecc) { void nand_write_page(u32 pageno, void *data, void *ecc) {
NAND_debug("nand_write_page(%u, %p, %p)\n", pageno, data, ecc); NAND_debug("nand_write_page(%u, %p, %p)\n", pageno, data, ecc);
if ((pageno < 0x200) || (pageno >= NAND_MAX_PAGE)) { if ((pageno < 0x200) || (pageno >= NAND_MAX_PAGE)) {
printf("Error: nand_write to page %d forbidden\n", pageno); gecko_printf("Error: nand_write to page %d forbidden\n", pageno);
return; return;
} }
dc_flushrange(data, PAGE_SIZE); dc_flushrange(data, PAGE_SIZE);
@ -209,12 +210,14 @@ void nand_write_page(u32 pageno, void *data, void *ecc) {
void nand_erase_block(u32 pageno) { void nand_erase_block(u32 pageno) {
NAND_debug("nand_erase_block(%d)\n", pageno); NAND_debug("nand_erase_block(%d)\n", pageno);
if ((pageno < 0x200) || (pageno >= NAND_MAX_PAGE)) { if ((pageno < 0x200) || (pageno >= NAND_MAX_PAGE)) {
printf("Error: nand_erase to page %d forbidden\n", pageno); gecko_printf("Error: nand_erase to page %d forbidden\n", pageno);
return; return;
} }
__nand_set_address(0, pageno); __nand_set_address(0, pageno);
nand_send_command(NAND_ERASE_PRE, 0x1c, 0, 0); nand_send_command(NAND_ERASE_PRE, 0x1c, 0, 0);
nand_send_command(NAND_ERASE_POST, 0, NAND_FLAGS_IRQ | NAND_FLAGS_WAIT, 0); nand_send_command(NAND_ERASE_POST, 0, NAND_FLAGS_IRQ | NAND_FLAGS_WAIT, 0);
NAND_debug("nand_erase_block(%d) done\n", pageno);
} }
#endif #endif