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Initial commit of work-in-progress iPod port

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7781 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman 2005-11-07 23:07:19 +00:00
parent 3cd5c646d0
commit 77372d1218
24 changed files with 2178 additions and 21 deletions
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61
firmware/drivers/ata.c
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@ -71,6 +71,43 @@
#define SET_REG(reg,val) reg = ((val) << 8)
#define SET_16BITREG(reg,val) reg = (val)
#elif CONFIG_CPU == PP5020
/* don't use sh7034 assembler routines */
#define PREFER_C_READING
#define PREFER_C_WRITING
#define ATA_IOBASE 0xc30001e0
#define ATA_DATA (*((volatile unsigned short*)(ATA_IOBASE)))
#define ATA_ERROR (*((volatile unsigned char*)(ATA_IOBASE + 0x04)))
#define ATA_NSECTOR (*((volatile unsigned char*)(ATA_IOBASE + 0x08)))
#define ATA_SECTOR (*((volatile unsigned char*)(ATA_IOBASE + 0x0c)))
#define ATA_LCYL (*((volatile unsigned char*)(ATA_IOBASE + 0x10)))
#define ATA_HCYL (*((volatile unsigned char*)(ATA_IOBASE + 0x14)))
#define ATA_SELECT (*((volatile unsigned char*)(ATA_IOBASE + 0x18)))
#define ATA_COMMAND (*((volatile unsigned char*)(ATA_IOBASE + 0x1c)))
#define ATA_CONTROL (*((volatile unsigned char*)(0xc30003f8)))
#define STATUS_BSY 0x80
#define STATUS_RDY 0x40
#define STATUS_DF 0x20
#define STATUS_DRQ 0x08
#define STATUS_ERR 0x01
#define ERROR_ABRT 0x04
#define WRITE_PATTERN1 0xa5
#define WRITE_PATTERN2 0x5a
#define WRITE_PATTERN3 0xaa
#define WRITE_PATTERN4 0x55
#define READ_PATTERN1 0xa5
#define READ_PATTERN2 0x5a
#define READ_PATTERN3 0xaa
#define READ_PATTERN4 0x55
#define SET_REG(reg,val) reg = (val)
#define SET_16BITREG(reg,val) reg = (val)
#elif CONFIG_CPU == SH7034
#define SWAP_WORDS
@ -362,7 +399,7 @@ static void copy_read_sectors(unsigned char* buf, int wordcount)
{ /* loop compiles to 7 assembler instructions */
/* takes 12 clock cycles (2 pipeline stalls, 1 wait) */
#ifdef SWAP_WORDS
*wbuf = letoh16(ATA_DATA);
*wbuf = swap16(ATA_DATA);
#else
*wbuf = ATA_DATA;
#endif
@ -677,7 +714,7 @@ static void copy_write_sectors(const unsigned char* buf, int wordcount)
#ifdef SWAP_WORDS
/* loop compiles to 6 assembler instructions */
/* takes 10 clock cycles (2 pipeline stalls) */
SET_16BITREG(ATA_DATA, htole16(*wbuf));
SET_16BITREG(ATA_DATA, swap16(*wbuf));
#else
SET_16BITREG(ATA_DATA, *wbuf);
#endif
@ -1242,6 +1279,8 @@ void ata_enable(bool on)
or_l(0x00040000, &GPIO_FUNCTION);
#elif CONFIG_CPU == TCC730
#elif CONFIG_CPU == PP5020
#warning Implement ata_enable()
#endif
}
@ -1255,7 +1294,6 @@ static int identify(void)
DEBUGF("identify() - not RDY\n");
return -1;
}
SET_REG(ATA_COMMAND, CMD_IDENTIFY);
if (!wait_for_start_of_transfer())
@ -1267,10 +1305,11 @@ static int identify(void)
for (i=0; i<SECTOR_SIZE/2; i++) {
/* the IDENTIFY words are already swapped, so we need to treat
this info differently that normal sector data */
#ifdef SWAP_WORDS
identify_info[i] = ATA_DATA;
#if defined(ROCKBOX_IS_BIGENDIAN) && !defined(SWAP_WORDS)
#warning Swapping ATA identify data
identify_info[i] = swap16(ATA_DATA);
#else
identify_info[i] = letoh16(ATA_DATA);
identify_info[i] = ATA_DATA;
#endif
}
@ -1393,6 +1432,9 @@ int ata_init(void)
bool coldstart = (P1 & 0x80) == 0;
#elif CONFIG_CPU == MCF5249
bool coldstart = (GPIO_FUNCTION & 0x00080000) == 0;
#elif CONFIG_CPU == PP5020
bool coldstart = false;
#warning Implement coldstart variable
#else
bool coldstart = (PACR2 & 0x4000) != 0;
#endif
@ -1418,6 +1460,13 @@ int ata_init(void)
or_l(0x00080000, &GPIO_FUNCTION);
/* FYI: The IDECONFIGx registers are set by set_cpu_frequency() */
#elif CONFIG_CPU == PP5020
/* From ipod-ide.c:ipod_ide_register() */
outl(inl(0xc3000028) | (1 << 5), 0xc3000028);
outl(inl(0xc3000028) & ~0x10000000, 0xc3000028);
outl(0x10, 0xc3000000);
outl(0x80002150, 0xc3000004);
#endif
sleeping = false;