untested NAND IPC support which breaks nandfs

i'll test this and port nandfs to the powerpc tomorrow
This commit is contained in:
Sven Peter 2009-01-27 18:12:41 +01:00 committed by bushing
parent 513926130a
commit 1eef8e083c
4 changed files with 72 additions and 41 deletions

4
ipc.c
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@ -6,6 +6,7 @@
#include "hollywood.h"
#include "gecko.h"
#include "ipc.h"
#include "nand.h"
static volatile ipc_request in_queue[IPC_IN_SIZE] ALIGNED(32) MEM2_BSS;
static volatile ipc_request out_queue[IPC_OUT_SIZE] ALIGNED(32) MEM2_BSS;
@ -91,6 +92,9 @@ static int process_slow(volatile ipc_request *req)
gecko_printf("IPC: unknown SLOW SYS request %04x\n", req->req);
}
break;
case IPC_DEV_NAND:
nand_ipc(req);
break;
default:
gecko_printf("IPC: unknown SLOW request %02x-%04x\n", req->device, req->req);
}

99
nand.c
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@ -6,6 +6,8 @@
#include "memory.h"
#include "crypto.h"
#include "irq.h"
#include "ipc.h"
#include "gecko.h"
//#define NAND_DEBUG 1
#undef NAND_SUPPORT_WRITE
@ -41,13 +43,19 @@ type *name = (type*)(((u32)(_al__##name)) + ((alignment) - (( \
#define PAGE_SIZE 2048
#define PAGE_SPARE_SIZE 64
static int irq = 0;
static int ipc_code = 0;
static int ipc_tag = 0;
void nand_irq(void)
{
irq = 1;
int code, tag;
if (ipc_code != 0) {
code = ipc_code;
tag = ipc_tag;
ipc_code = ipc_tag = 0;
ipc_post(code, tag, 1, 0);
}
}
static inline u32 __nand_read32(u32 addr)
{
@ -72,7 +80,6 @@ void nand_send_command(u32 command, u32 bitmask, u32 flags, u32 num_bytes) {
__nand_write32(NAND_CMD, 0x7fffffff);
__nand_write32(NAND_CMD, 0);
__nand_write32(NAND_CMD, cmd);
__nand_wait();
}
void __nand_set_address(s32 page_off, s32 pageno) {
@ -97,6 +104,7 @@ int nand_reset(void)
{
NAND_debug("nand_reset()\n");
nand_send_command(NAND_RESET, 0, 0x8000, 0);
__nand_wait();
// yay cargo cult
__nand_write32(NAND_CONF, 0x8000000);
__nand_write32(NAND_CONF, 0x4b3e0e7f);
@ -117,6 +125,7 @@ u32 nand_get_id(void) {
__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];
@ -128,18 +137,13 @@ u32 nand_get_status(void) {
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];
}
inline void __nand_wait_irq(void) {
while(irq == 0);
}
void nand_read_page(u32 pageno, void *data, void *ecc) {
NAND_debug("nand_read_page(%u, %p, %p)\n", pageno, data, ecc);
#if 1
irq = 0;
__nand_set_address(0, pageno);
nand_send_command(NAND_READ_PRE, 0x1f, 0, 0);
@ -148,34 +152,9 @@ void nand_read_page(u32 pageno, void *data, void *ecc) {
__nand_setup_dma(data, ecc);
nand_send_command(NAND_READ_POST, 0, 0x4000b000, 0x840);
__nand_wait_irq();
#else
int i;
unsigned char *c_data = (unsigned char *)data;
unsigned char *c_ecc = (unsigned char *)ecc;
for(i=0; i<0x800; i++) c_data[i] = pageno % 256;
for(i=0; i<0x40; i++) c_ecc = pageno % 256;
#endif
}
// FIXME: do we really need to read the ECC data?
static u8 ecc[64] __attribute__((aligned(32))) MEM2_BSS;
void nand_read_cluster(u32 clusterno, void *data) {
int i;
for(i = 0; i < 8; i++)
nand_read_page((clusterno*8) + i, data + (i * PAGE_SIZE), ecc);
}
void nand_read_decrypted_cluster(u32 clusterno, void *data) {
nand_read_cluster(clusterno, data);
aes_reset();
aes_set_key(otp.nand_key);
aes_empty_iv();
aes_decrypt(data, data, 0x400, 0);
}
#ifdef NAND_SUPPORT_WRITE
void nand_write_page(u32 pageno, void *data, void *ecc) {
NAND_debug("nand_write_page(%u, %p, %p)\n", pageno, data, ecc);
@ -200,7 +179,53 @@ void nand_erase_block(u32 pageno) {
void nand_initialize(void)
{
irq_enable(IRQ_NAND);
irq = 0;
ipc_code = ipc_tag = 0;
nand_reset();
irq_enable(IRQ_NAND);
}
void nand_ipc(volatile ipc_request *req)
{
if (ipc_code != 0 || ipc_tag != 0) {
gecko_printf("NAND: previous IPC request is not done yet.");
ipc_post(req->code, req->tag, 1, -1);
return;
}
switch (req->req) {
case IPC_NAND_RESET:
nand_reset();
ipc_post(req->code, req->tag, 1, 0);
break;
case IPC_NAND_GETID:
ipc_post(req->code, req->tag, 2, 0, nand_get_id());
break;
case IPC_NAND_READ:
ipc_code = req->code;
ipc_tag = req->tag;
nand_read_page(req->args[0], (void *)req->args[1],
(void *)req->args[1]);
break;
#ifdef NAND_SUPPORT_WRITE
case IPC_NAND_WRITE:
ipc_code = req->code;
ipc_tag = req->tag;
nand_write_page(req->args[0], (void *)req->args[1],
(void *)req->args[1]);
break;
#endif
#ifdef NAND_SUPPORT_ERASE
case IPC_NAND_ERASE:
ipc_code = req->code;
ipc_tag = req->tag;
nand_erase_block(req->args[0]);
break;
#endif
default:
gecko_printf("IPC: unknown SLOW NAND request %04x\n",
req->req);
}
}

4
nand.h
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@ -2,6 +2,7 @@
#define __NAND_H__
#include "types.h"
#include "ipc.h"
void nand_irq(void);
@ -14,8 +15,9 @@ void nand_write_page(u32 pageno, void *data, void *ecc);
void nand_erase_block(u32 pageno);
void nand_read_cluster(u32 clusterno, void *data);
void nand_read_decrypted_cluster(u32 clusterno, void *data);
void nand_initialize();
void nand_ipc(volatile ipc_request *req);
#endif

View File

@ -63,8 +63,8 @@ s32 nandfs_initialize()
for(i = 0; i < sizeof(struct _nandfs_sffs)/(PAGE_SIZE*8);
i++) {
nand_read_cluster(supercluster + i,
((u8 *)&sffs) + (i * PAGE_SIZE * 8));
/* nand_read_cluster(supercluster + i,
((u8 *)&sffs) + (i * PAGE_SIZE * 8));*/
}
initialized = 1;
@ -155,7 +155,7 @@ s32 nandfs_read(void *ptr, u32 size, u32 nmemb, struct nandfs_fp *fp)
return 0;
while(total > 0) {
nand_read_decrypted_cluster(fp->cur_cluster, buffer);
// nand_read_decrypted_cluster(fp->cur_cluster, buffer);
copy_offset = fp->offset % (PAGE_SIZE * 8);
copy_len = (PAGE_SIZE * 8) - copy_offset;
if(copy_len > total)