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ata_flash.c: write 32 bits to the buffer at a time when reading a sector.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14822 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tomasz Malesinski 2007-09-22 22:53:29 +00:00
parent 8f8dbf4742
commit 7d1eeddf93
1 changed files with 24 additions and 2 deletions
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22
firmware/drivers/ata_flash.c
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@ -149,6 +149,7 @@ int flash_read_id(int no) {
int flash_read_sector(int sector, unsigned char* buf, int flash_read_sector(int sector, unsigned char* buf,
unsigned char* oob) unsigned char* oob)
{ {
unsigned long *bufl = (unsigned long *)buf;
int chip, chip_sector; int chip, chip_sector;
int i; int i;
@ -167,8 +168,29 @@ int flash_read_sector(int sector, unsigned char* buf,
flash_wait_ready(); flash_wait_ready();
if ((unsigned long)buf & 3)
{
for (i = 0; i < 512; i++) for (i = 0; i < 512; i++)
buf[i] = flash_read_data(); buf[i] = flash_read_data();
}
else
{
for (i = 0; i < 512 / 4; i++) {
unsigned long v;
#ifdef ROCKBOX_LITTLE_ENDIAN
v = flash_read_data();
v |= (unsigned long)flash_read_data() << 8;
v |= (unsigned long)flash_read_data() << 16;
v |= (unsigned long)flash_read_data() << 24;
#else
v = (unsigned long)flash_read_data() << 24;
v |= (unsigned long)flash_read_data() << 16;
v |= (unsigned long)flash_read_data() << 8;
v |= flash_read_data();
#endif
bufl[i] = v;
}
}
flash_write_cmd(0x05); flash_write_cmd(0x05);
flash_write_addr((chip_sector & 3) * 0x10); flash_write_addr((chip_sector & 3) * 0x10);