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a little bit of nand cleanup

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This commit is contained in:
bushing 2009-04-12 18:06:53 -07:00
parent f806abdac2
commit 4788621a9b
1 changed files with 19 additions and 16 deletions
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17
nand.c
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@ -1,8 +1,9 @@
/*
mini - a Free Software replacement for the Nintendo/BroadOn IOS.
NAND support
low-level NAND support
Copyright (C) 2008, 2009 Haxx Enterprises <bushing@gmail.com>
Copyright (C) 2008, 2009 Sven Peter <svenpeter@gmail.com>
Copyright (C) 2008, 2009 Hector Martin "marcan" <marcan@marcansoft.com>
@ -159,10 +160,9 @@ void __nand_setup_dma(u8 *data, u8 *spare) {
}
}
int nand_reset(void)
{
int nand_reset(void) {
NAND_debug("nand_reset()\n");
// IOS actually uses NAND_FLAGS_IRQ | NAND_FLAGS_WAIT here
// IOS actually uses NAND_FLAGS_IRQ | NAND_FLAGS_WAIT here
nand_send_command(NAND_RESET, 0, NAND_FLAGS_WAIT, 0);
__nand_wait();
// enable NAND controller
@ -206,8 +206,8 @@ void nand_read_page(u32 pageno, void *data, void *ecc) {
nand_send_command(NAND_READ_POST, 0, NAND_FLAGS_IRQ | NAND_FLAGS_WAIT | NAND_FLAGS_RD | NAND_FLAGS_ECC, 0x840);
}
void nand_wait() {
// power-saving IRQ wait
void nand_wait(void) {
// power-saving IRQ wait
while(!irq_flag) {
u32 cookie = irq_kill();
if(!irq_flag)
@ -220,6 +220,8 @@ void nand_wait() {
void nand_write_page(u32 pageno, void *data, void *ecc) {
irq_flag = 0;
NAND_debug("nand_write_page(%u, %p, %p)\n", pageno, data, ecc);
// this is a safety check to prevent you from accidentally wiping out boot1 or boot2.
if ((pageno < 0x200) || (pageno >= NAND_MAX_PAGE)) {
gecko_printf("Error: nand_write to page %d forbidden\n", pageno);
return;
@ -239,6 +241,8 @@ void nand_write_page(u32 pageno, void *data, void *ecc) {
void nand_erase_block(u32 pageno) {
irq_flag = 0;
NAND_debug("nand_erase_block(%d)\n", pageno);
// this is a safety check to prevent you from accidentally wiping out boot1 or boot2.
if ((pageno < 0x200) || (pageno >= NAND_MAX_PAGE)) {
gecko_printf("Error: nand_erase to page %d forbidden\n", pageno);
return;
@ -248,7 +252,6 @@ void nand_erase_block(u32 pageno) {
__nand_wait();
nand_send_command(NAND_ERASE_POST, 0, NAND_FLAGS_IRQ | NAND_FLAGS_WAIT, 0);
NAND_debug("nand_erase_block(%d) done\n", pageno);
}
#endif