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small nand code tweaks, add nand_status() command

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bushing 2009-03-07 04:19:16 -08:00
parent d136bb42c1
commit 018b0b8314
2 changed files with 15 additions and 4 deletions
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1
ipc.h
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@ -36,6 +36,7 @@
#define IPC_NAND_READ 0x0002 #define IPC_NAND_READ 0x0002
#define IPC_NAND_WRITE 0x0003 #define IPC_NAND_WRITE 0x0003
#define IPC_NAND_ERASE 0x0004 #define IPC_NAND_ERASE 0x0004
#define IPC_NAND_STATUS 0x0005
#define IPC_SD_MOUNT 0x0000 #define IPC_SD_MOUNT 0x0000
#define IPC_SD_SELECT 0x0001 #define IPC_SD_SELECT 0x0001

16
nand.c
View File

@ -119,10 +119,12 @@ void __nand_setup_dma(u8 *data, u8 *spare) {
int nand_reset(void) int nand_reset(void)
{ {
NAND_debug("nand_reset()\n"); NAND_debug("nand_reset()\n");
// IOS actually uses NAND_FLAGS_IRQ | NAND_FLAGS_WAIT here
nand_send_command(NAND_RESET, 0, NAND_FLAGS_WAIT, 0); nand_send_command(NAND_RESET, 0, NAND_FLAGS_WAIT, 0);
__nand_wait(); __nand_wait();
// yay cargo cult // enable NAND controller
__nand_write32(NAND_CONF, 0x08000000); __nand_write32(NAND_CONF, 0x08000000);
// set configuration parameters for 512MB flash chips
__nand_write32(NAND_CONF, 0x4b3e0e7f); __nand_write32(NAND_CONF, 0x4b3e0e7f);
return 0; return 0;
} }
@ -133,14 +135,16 @@ void nand_get_id(u8 *idbuf) {
dc_invalidaterange(idbuf, 0x40); dc_invalidaterange(idbuf, 0x40);
__nand_setup_dma(idbuf, (u8 *)-1); __nand_setup_dma(idbuf, (u8 *)-1);
nand_send_command(NAND_CHIPID, 1, NAND_FLAGS_IRQ | NAND_FLAGS_RD, 0x40); nand_send_command(NAND_CHIPID, 1, NAND_FLAGS_RD, 0x40);
} }
void nand_get_status(u8 *status_buf) { void nand_get_status(u8 *status_buf) {
status_buf[0]=0; status_buf[0]=0;
dc_invalidaterange(status_buf, 0x40); dc_invalidaterange(status_buf, 0x40);
__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_RD, 0x40);
} }
void nand_read_page(u32 pageno, void *data, void *ecc) { void nand_read_page(u32 pageno, void *data, void *ecc) {
@ -216,6 +220,12 @@ void nand_ipc(volatile ipc_request *req)
nand_get_id((u8 *)req->args[0]); nand_get_id((u8 *)req->args[0]);
break; break;
case IPC_NAND_STATUS:
ipc_code = req->code;
ipc_tag = req->tag;
nand_get_status((u8 *)req->args[0]);
break;
case IPC_NAND_READ: case IPC_NAND_READ:
ipc_code = req->code; ipc_code = req->code;
ipc_tag = req->tag; ipc_tag = req->tag;