mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-17 23:48:52 +09:00
![Peter Tyser](/assets/img/avatar_default.png)
Remove command name from all command "usage" fields and update common/command.c to display "name - usage" instead of just "usage". Also remove newlines from command usage fields. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
909 lines
24 KiB
C
909 lines
24 KiB
C
/*
|
|
* (C) Copyright 2001
|
|
* Denis Peter, MPL AG, d.peter@mpl.ch.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
*/
|
|
/*
|
|
* Floppy Disk support
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <config.h>
|
|
#include <command.h>
|
|
#include <image.h>
|
|
|
|
|
|
#undef FDC_DEBUG
|
|
|
|
#ifdef FDC_DEBUG
|
|
#define PRINTF(fmt,args...) printf (fmt ,##args)
|
|
#else
|
|
#define PRINTF(fmt,args...)
|
|
#endif
|
|
|
|
#ifndef TRUE
|
|
#define TRUE 1
|
|
#endif
|
|
#ifndef FALSE
|
|
#define FALSE 0
|
|
#endif
|
|
|
|
/*#if defined(CONFIG_CMD_DATE) */
|
|
/*#include <rtc.h> */
|
|
/*#endif */
|
|
|
|
typedef struct {
|
|
int flags; /* connected drives ect */
|
|
unsigned long blnr; /* Logical block nr */
|
|
uchar drive; /* drive no */
|
|
uchar cmdlen; /* cmd length */
|
|
uchar cmd[16]; /* cmd desc */
|
|
uchar dma; /* if > 0 dma enabled */
|
|
uchar result[11]; /* status information */
|
|
uchar resultlen; /* lenght of result */
|
|
} FDC_COMMAND_STRUCT;
|
|
|
|
/* flags: only the lower 8bit used:
|
|
* bit 0 if set drive 0 is present
|
|
* bit 1 if set drive 1 is present
|
|
* bit 2 if set drive 2 is present
|
|
* bit 3 if set drive 3 is present
|
|
* bit 4 if set disk in drive 0 is inserted
|
|
* bit 5 if set disk in drive 1 is inserted
|
|
* bit 6 if set disk in drive 2 is inserted
|
|
* bit 7 if set disk in drive 4 is inserted
|
|
*/
|
|
|
|
/* cmd indexes */
|
|
#define COMMAND 0
|
|
#define DRIVE 1
|
|
#define CONFIG0 1
|
|
#define SPEC_HUTSRT 1
|
|
#define TRACK 2
|
|
#define CONFIG1 2
|
|
#define SPEC_HLT 2
|
|
#define HEAD 3
|
|
#define CONFIG2 3
|
|
#define SECTOR 4
|
|
#define SECTOR_SIZE 5
|
|
#define LAST_TRACK 6
|
|
#define GAP 7
|
|
#define DTL 8
|
|
/* result indexes */
|
|
#define STATUS_0 0
|
|
#define STATUS_PCN 1
|
|
#define STATUS_1 1
|
|
#define STATUS_2 2
|
|
#define STATUS_TRACK 3
|
|
#define STATUS_HEAD 4
|
|
#define STATUS_SECT 5
|
|
#define STATUS_SECT_SIZE 6
|
|
|
|
|
|
/* Register addresses */
|
|
#define FDC_BASE 0x3F0
|
|
#define FDC_SRA FDC_BASE + 0 /* Status Register A */
|
|
#define FDC_SRB FDC_BASE + 1 /* Status Register B */
|
|
#define FDC_DOR FDC_BASE + 2 /* Digital Output Register */
|
|
#define FDC_TDR FDC_BASE + 3 /* Tape Drive Register */
|
|
#define FDC_DSR FDC_BASE + 4 /* Data rate Register */
|
|
#define FDC_MSR FDC_BASE + 4 /* Main Status Register */
|
|
#define FDC_FIFO FDC_BASE + 5 /* FIFO */
|
|
#define FDC_DIR FDC_BASE + 6 /* Digital Input Register */
|
|
#define FDC_CCR FDC_BASE + 7 /* Configuration Control */
|
|
/* Commands */
|
|
#define FDC_CMD_SENSE_INT 0x08
|
|
#define FDC_CMD_CONFIGURE 0x13
|
|
#define FDC_CMD_SPECIFY 0x03
|
|
#define FDC_CMD_RECALIBRATE 0x07
|
|
#define FDC_CMD_READ 0x06
|
|
#define FDC_CMD_READ_TRACK 0x02
|
|
#define FDC_CMD_READ_ID 0x0A
|
|
#define FDC_CMD_DUMP_REG 0x0E
|
|
#define FDC_CMD_SEEK 0x0F
|
|
|
|
#define FDC_CMD_SENSE_INT_LEN 0x01
|
|
#define FDC_CMD_CONFIGURE_LEN 0x04
|
|
#define FDC_CMD_SPECIFY_LEN 0x03
|
|
#define FDC_CMD_RECALIBRATE_LEN 0x02
|
|
#define FDC_CMD_READ_LEN 0x09
|
|
#define FDC_CMD_READ_TRACK_LEN 0x09
|
|
#define FDC_CMD_READ_ID_LEN 0x02
|
|
#define FDC_CMD_DUMP_REG_LEN 0x01
|
|
#define FDC_CMD_SEEK_LEN 0x03
|
|
|
|
#define FDC_FIFO_THR 0x0C
|
|
#define FDC_FIFO_DIS 0x00
|
|
#define FDC_IMPLIED_SEEK 0x01
|
|
#define FDC_POLL_DIS 0x00
|
|
#define FDC_PRE_TRK 0x00
|
|
#define FDC_CONFIGURE FDC_FIFO_THR | (FDC_POLL_DIS<<4) | (FDC_FIFO_DIS<<5) | (FDC_IMPLIED_SEEK << 6)
|
|
#define FDC_MFM_MODE 0x01 /* MFM enable */
|
|
#define FDC_SKIP_MODE 0x00 /* skip enable */
|
|
|
|
#define FDC_TIME_OUT 100000 /* time out */
|
|
#define FDC_RW_RETRIES 3 /* read write retries */
|
|
#define FDC_CAL_RETRIES 3 /* calibration and seek retries */
|
|
|
|
|
|
/* Disk structure */
|
|
typedef struct {
|
|
unsigned int size; /* nr of sectors total */
|
|
unsigned int sect; /* sectors per track */
|
|
unsigned int head; /* nr of heads */
|
|
unsigned int track; /* nr of tracks */
|
|
unsigned int stretch; /* !=0 means double track steps */
|
|
unsigned char gap; /* gap1 size */
|
|
unsigned char rate; /* data rate. |= 0x40 for perpendicular */
|
|
unsigned char spec1; /* stepping rate, head unload time */
|
|
unsigned char fmt_gap;/* gap2 size */
|
|
unsigned char hlt; /* head load time */
|
|
unsigned char sect_code;/* Sector Size code */
|
|
const char * name; /* used only for predefined formats */
|
|
} FD_GEO_STRUCT;
|
|
|
|
|
|
/* supported Floppy types (currently only one) */
|
|
const static FD_GEO_STRUCT floppy_type[2] = {
|
|
{ 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,16,2,"H1440" }, /* 7 1.44MB 3.5" */
|
|
{ 0, 0,0, 0,0,0x00,0x00,0x00,0x00, 0,0,NULL }, /* end of table */
|
|
};
|
|
|
|
static FDC_COMMAND_STRUCT cmd; /* global command struct */
|
|
|
|
/* If the boot drive number is undefined, we assume it's drive 0 */
|
|
#ifndef CONFIG_SYS_FDC_DRIVE_NUMBER
|
|
#define CONFIG_SYS_FDC_DRIVE_NUMBER 0
|
|
#endif
|
|
|
|
/* Hardware access */
|
|
#ifndef CONFIG_SYS_ISA_IO_STRIDE
|
|
#define CONFIG_SYS_ISA_IO_STRIDE 1
|
|
#endif
|
|
|
|
#ifndef CONFIG_SYS_ISA_IO_OFFSET
|
|
#define CONFIG_SYS_ISA_IO_OFFSET 0
|
|
#endif
|
|
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
unsigned char INT6_Status;
|
|
|
|
void fdc_interrupt(void)
|
|
{
|
|
INT6_Status = 0x80;
|
|
}
|
|
|
|
/* waits for an interrupt (polling) */
|
|
int wait_for_fdc_int(void)
|
|
{
|
|
unsigned long timeout;
|
|
timeout = FDC_TIME_OUT;
|
|
while(((volatile)INT6_Status & 0x80) == 0) {
|
|
timeout--;
|
|
udelay(10);
|
|
if(timeout == 0) /* timeout occured */
|
|
return FALSE;
|
|
}
|
|
INT6_Status = 0;
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
/* Supporting Functions */
|
|
/* reads a Register of the FDC */
|
|
unsigned char read_fdc_reg(unsigned int addr)
|
|
{
|
|
volatile unsigned char *val =
|
|
(volatile unsigned char *)(CONFIG_SYS_ISA_IO_BASE_ADDRESS +
|
|
(addr * CONFIG_SYS_ISA_IO_STRIDE) +
|
|
CONFIG_SYS_ISA_IO_OFFSET);
|
|
|
|
return val [0];
|
|
}
|
|
|
|
/* writes a Register of the FDC */
|
|
void write_fdc_reg(unsigned int addr, unsigned char val)
|
|
{
|
|
volatile unsigned char *tmp =
|
|
(volatile unsigned char *)(CONFIG_SYS_ISA_IO_BASE_ADDRESS +
|
|
(addr * CONFIG_SYS_ISA_IO_STRIDE) +
|
|
CONFIG_SYS_ISA_IO_OFFSET);
|
|
tmp[0]=val;
|
|
}
|
|
|
|
#ifndef CONFIG_AMIGAONEG3SE
|
|
/* waits for an interrupt (polling) */
|
|
int wait_for_fdc_int(void)
|
|
{
|
|
unsigned long timeout;
|
|
timeout = FDC_TIME_OUT;
|
|
while((read_fdc_reg(FDC_SRA)&0x80)==0) {
|
|
timeout--;
|
|
udelay(10);
|
|
if(timeout==0) /* timeout occured */
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* reads a byte from the FIFO of the FDC and checks direction and RQM bit
|
|
of the MSR. returns -1 if timeout, or byte if ok */
|
|
int read_fdc_byte(void)
|
|
{
|
|
unsigned long timeout;
|
|
timeout = FDC_TIME_OUT;
|
|
while((read_fdc_reg(FDC_MSR)&0xC0)!=0xC0) {
|
|
/* direction out and ready */
|
|
udelay(10);
|
|
timeout--;
|
|
if(timeout==0) /* timeout occured */
|
|
return -1;
|
|
}
|
|
return read_fdc_reg(FDC_FIFO);
|
|
}
|
|
|
|
/* if the direction of the FIFO is wrong, this routine is used to
|
|
empty the FIFO. Should _not_ be used */
|
|
int fdc_need_more_output(void)
|
|
{
|
|
unsigned char c;
|
|
while((read_fdc_reg(FDC_MSR)&0xC0)==0xC0) {
|
|
c=(unsigned char)read_fdc_byte();
|
|
printf("Error: more output: %x\n",c);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* writes a byte to the FIFO of the FDC and checks direction and RQM bit
|
|
of the MSR */
|
|
int write_fdc_byte(unsigned char val)
|
|
{
|
|
unsigned long timeout;
|
|
timeout = FDC_TIME_OUT;
|
|
while((read_fdc_reg(FDC_MSR)&0xC0)!=0x80) {
|
|
/* direction in and ready for byte */
|
|
timeout--;
|
|
udelay(10);
|
|
fdc_need_more_output();
|
|
if(timeout==0) /* timeout occured */
|
|
return FALSE;
|
|
}
|
|
write_fdc_reg(FDC_FIFO,val);
|
|
return TRUE;
|
|
}
|
|
|
|
/* sets up all FDC commands and issues it to the FDC. If
|
|
the command causes direct results (no Execution Phase)
|
|
the result is be read as well. */
|
|
|
|
int fdc_issue_cmd(FDC_COMMAND_STRUCT *pCMD,FD_GEO_STRUCT *pFG)
|
|
{
|
|
int i;
|
|
unsigned long head,track,sect,timeout;
|
|
track = pCMD->blnr / (pFG->sect * pFG->head); /* track nr */
|
|
sect = pCMD->blnr % (pFG->sect * pFG->head); /* remaining blocks */
|
|
head = sect / pFG->sect; /* head nr */
|
|
sect = sect % pFG->sect; /* remaining blocks */
|
|
sect++; /* sectors are 1 based */
|
|
PRINTF("Cmd 0x%02x Track %ld, Head %ld, Sector %ld, Drive %d (blnr %ld)\n",
|
|
pCMD->cmd[0],track,head,sect,pCMD->drive,pCMD->blnr);
|
|
|
|
if(head|=0) { /* max heads = 2 */
|
|
pCMD->cmd[DRIVE]=pCMD->drive | 0x04; /* head 1 */
|
|
pCMD->cmd[HEAD]=(unsigned char) head; /* head register */
|
|
}
|
|
else {
|
|
pCMD->cmd[DRIVE]=pCMD->drive; /* head 0 */
|
|
pCMD->cmd[HEAD]=(unsigned char) head; /* head register */
|
|
}
|
|
pCMD->cmd[TRACK]=(unsigned char) track; /* track */
|
|
switch (pCMD->cmd[COMMAND]) {
|
|
case FDC_CMD_READ:
|
|
pCMD->cmd[SECTOR]=(unsigned char) sect; /* sector */
|
|
pCMD->cmd[SECTOR_SIZE]=pFG->sect_code; /* sector size code */
|
|
pCMD->cmd[LAST_TRACK]=pFG->sect; /* End of track */
|
|
pCMD->cmd[GAP]=pFG->gap; /* gap */
|
|
pCMD->cmd[DTL]=0xFF; /* DTL */
|
|
pCMD->cmdlen=FDC_CMD_READ_LEN;
|
|
pCMD->cmd[COMMAND]|=(FDC_MFM_MODE<<6); /* set MFM bit */
|
|
pCMD->cmd[COMMAND]|=(FDC_SKIP_MODE<<5); /* set Skip bit */
|
|
pCMD->resultlen=0; /* result only after execution */
|
|
break;
|
|
case FDC_CMD_SEEK:
|
|
pCMD->cmdlen=FDC_CMD_SEEK_LEN;
|
|
pCMD->resultlen=0; /* no result */
|
|
break;
|
|
case FDC_CMD_CONFIGURE:
|
|
pCMD->cmd[CONFIG0]=0;
|
|
pCMD->cmd[CONFIG1]=FDC_CONFIGURE; /* FIFO Threshold, Poll, Enable FIFO */
|
|
pCMD->cmd[CONFIG2]=FDC_PRE_TRK; /* Precompensation Track */
|
|
pCMD->cmdlen=FDC_CMD_CONFIGURE_LEN;
|
|
pCMD->resultlen=0; /* no result */
|
|
break;
|
|
case FDC_CMD_SPECIFY:
|
|
pCMD->cmd[SPEC_HUTSRT]=pFG->spec1;
|
|
pCMD->cmd[SPEC_HLT]=(pFG->hlt)<<1; /* head load time */
|
|
if(pCMD->dma==0)
|
|
pCMD->cmd[SPEC_HLT]|=0x1; /* no dma */
|
|
pCMD->cmdlen=FDC_CMD_SPECIFY_LEN;
|
|
pCMD->resultlen=0; /* no result */
|
|
break;
|
|
case FDC_CMD_DUMP_REG:
|
|
pCMD->cmdlen=FDC_CMD_DUMP_REG_LEN;
|
|
pCMD->resultlen=10; /* 10 byte result */
|
|
break;
|
|
case FDC_CMD_READ_ID:
|
|
pCMD->cmd[COMMAND]|=(FDC_MFM_MODE<<6); /* set MFM bit */
|
|
pCMD->cmdlen=FDC_CMD_READ_ID_LEN;
|
|
pCMD->resultlen=7; /* 7 byte result */
|
|
break;
|
|
case FDC_CMD_RECALIBRATE:
|
|
pCMD->cmd[DRIVE]&=0x03; /* don't set the head bit */
|
|
pCMD->cmdlen=FDC_CMD_RECALIBRATE_LEN;
|
|
pCMD->resultlen=0; /* no result */
|
|
break;
|
|
break;
|
|
case FDC_CMD_SENSE_INT:
|
|
pCMD->cmdlen=FDC_CMD_SENSE_INT_LEN;
|
|
pCMD->resultlen=2;
|
|
break;
|
|
}
|
|
for(i=0;i<pCMD->cmdlen;i++) {
|
|
/* PRINTF("write cmd%d = 0x%02X\n",i,pCMD->cmd[i]); */
|
|
if(write_fdc_byte(pCMD->cmd[i])==FALSE) {
|
|
PRINTF("Error: timeout while issue cmd%d\n",i);
|
|
return FALSE;
|
|
}
|
|
}
|
|
timeout=FDC_TIME_OUT;
|
|
for(i=0;i<pCMD->resultlen;i++) {
|
|
while((read_fdc_reg(FDC_MSR)&0xC0)!=0xC0) {
|
|
timeout--;
|
|
if(timeout==0) {
|
|
PRINTF(" timeout while reading result%d MSR=0x%02X\n",i,read_fdc_reg(FDC_MSR));
|
|
return FALSE;
|
|
}
|
|
}
|
|
pCMD->result[i]=(unsigned char)read_fdc_byte();
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* selects the drive assigned in the cmd structur and
|
|
switches on the Motor */
|
|
void select_fdc_drive(FDC_COMMAND_STRUCT *pCMD)
|
|
{
|
|
unsigned char val;
|
|
|
|
val=(1<<(4+pCMD->drive))|pCMD->drive|0xC; /* set reset, dma gate and motor bits */
|
|
if((read_fdc_reg(FDC_DOR)&val)!=val) {
|
|
write_fdc_reg(FDC_DOR,val);
|
|
for(val=0;val<255;val++)
|
|
udelay(500); /* wait some time to start motor */
|
|
}
|
|
}
|
|
|
|
/* switches off the Motor of the specified drive */
|
|
void stop_fdc_drive(FDC_COMMAND_STRUCT *pCMD)
|
|
{
|
|
unsigned char val;
|
|
|
|
val=(1<<(4+pCMD->drive))|pCMD->drive; /* sets motor bits */
|
|
write_fdc_reg(FDC_DOR,(read_fdc_reg(FDC_DOR)&~val));
|
|
}
|
|
|
|
/* issues a recalibrate command, waits for interrupt and
|
|
* issues a sense_interrupt */
|
|
int fdc_recalibrate(FDC_COMMAND_STRUCT *pCMD,FD_GEO_STRUCT *pFG)
|
|
{
|
|
pCMD->cmd[COMMAND]=FDC_CMD_RECALIBRATE;
|
|
if(fdc_issue_cmd(pCMD,pFG)==FALSE)
|
|
return FALSE;
|
|
while(wait_for_fdc_int()!=TRUE);
|
|
pCMD->cmd[COMMAND]=FDC_CMD_SENSE_INT;
|
|
return(fdc_issue_cmd(pCMD,pFG));
|
|
}
|
|
|
|
/* issues a recalibrate command, waits for interrupt and
|
|
* issues a sense_interrupt */
|
|
int fdc_seek(FDC_COMMAND_STRUCT *pCMD,FD_GEO_STRUCT *pFG)
|
|
{
|
|
pCMD->cmd[COMMAND]=FDC_CMD_SEEK;
|
|
if(fdc_issue_cmd(pCMD,pFG)==FALSE)
|
|
return FALSE;
|
|
while(wait_for_fdc_int()!=TRUE);
|
|
pCMD->cmd[COMMAND]=FDC_CMD_SENSE_INT;
|
|
return(fdc_issue_cmd(pCMD,pFG));
|
|
}
|
|
|
|
#ifndef CONFIG_AMIGAONEG3SE
|
|
/* terminates current command, by not servicing the FIFO
|
|
* waits for interrupt and fills in the result bytes */
|
|
int fdc_terminate(FDC_COMMAND_STRUCT *pCMD)
|
|
{
|
|
int i;
|
|
for(i=0;i<100;i++)
|
|
udelay(500); /* wait 500usec for fifo overrun */
|
|
while((read_fdc_reg(FDC_SRA)&0x80)==0x00); /* wait as long as no int has occured */
|
|
for(i=0;i<7;i++) {
|
|
pCMD->result[i]=(unsigned char)read_fdc_byte();
|
|
}
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
int fdc_terminate(FDC_COMMAND_STRUCT *pCMD)
|
|
{
|
|
int i;
|
|
for(i=0;i<100;i++)
|
|
udelay(500); /* wait 500usec for fifo overrun */
|
|
while((INT6_Status&0x80)==0x00); /* wait as long as no int has occured */
|
|
for(i=0;i<7;i++) {
|
|
pCMD->result[i]=(unsigned char)read_fdc_byte();
|
|
}
|
|
INT6_Status = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
#define disable_interrupts() 0
|
|
#define enable_interrupts() (void)0
|
|
#endif
|
|
|
|
/* reads data from FDC, seek commands are issued automatic */
|
|
int fdc_read_data(unsigned char *buffer, unsigned long blocks,FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG)
|
|
{
|
|
/* first seek to start address */
|
|
unsigned long len,lastblk,readblk,i,timeout,ii,offset;
|
|
unsigned char pcn,c,retriesrw,retriescal;
|
|
unsigned char *bufferw; /* working buffer */
|
|
int sect_size;
|
|
int flags;
|
|
|
|
flags=disable_interrupts(); /* switch off all Interrupts */
|
|
select_fdc_drive(pCMD); /* switch on drive */
|
|
sect_size=0x080<<pFG->sect_code;
|
|
retriesrw=0;
|
|
retriescal=0;
|
|
offset=0;
|
|
if(fdc_seek(pCMD,pFG)==FALSE) {
|
|
stop_fdc_drive(pCMD);
|
|
enable_interrupts();
|
|
return FALSE;
|
|
}
|
|
if((pCMD->result[STATUS_0]&0x20)!=0x20) {
|
|
printf("Seek error Status: %02X\n",pCMD->result[STATUS_0]);
|
|
stop_fdc_drive(pCMD);
|
|
enable_interrupts();
|
|
return FALSE;
|
|
}
|
|
pcn=pCMD->result[STATUS_PCN]; /* current track */
|
|
/* now determine the next seek point */
|
|
lastblk=pCMD->blnr + blocks;
|
|
/* readblk=(pFG->head*pFG->sect)-(pCMD->blnr%(pFG->head*pFG->sect)); */
|
|
readblk=pFG->sect-(pCMD->blnr%pFG->sect);
|
|
PRINTF("1st nr of block possible read %ld start %ld\n",readblk,pCMD->blnr);
|
|
if(readblk>blocks) /* is end within 1st track */
|
|
readblk=blocks; /* yes, correct it */
|
|
PRINTF("we read %ld blocks start %ld\n",readblk,pCMD->blnr);
|
|
bufferw = &buffer[0]; /* setup working buffer */
|
|
do {
|
|
retryrw:
|
|
len=sect_size * readblk;
|
|
pCMD->cmd[COMMAND]=FDC_CMD_READ;
|
|
if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
|
|
stop_fdc_drive(pCMD);
|
|
enable_interrupts();
|
|
return FALSE;
|
|
}
|
|
for (i=0;i<len;i++) {
|
|
timeout=FDC_TIME_OUT;
|
|
do {
|
|
c=read_fdc_reg(FDC_MSR);
|
|
if((c&0xC0)==0xC0) {
|
|
bufferw[i]=read_fdc_reg(FDC_FIFO);
|
|
break;
|
|
}
|
|
if((c&0xC0)==0x80) { /* output */
|
|
PRINTF("Transfer error transfered: at %ld, MSR=%02X\n",i,c);
|
|
if(i>6) {
|
|
for(ii=0;ii<7;ii++) {
|
|
pCMD->result[ii]=bufferw[(i-7+ii)];
|
|
} /* for */
|
|
}
|
|
if(retriesrw++>FDC_RW_RETRIES) {
|
|
if (retriescal++>FDC_CAL_RETRIES) {
|
|
stop_fdc_drive(pCMD);
|
|
enable_interrupts();
|
|
return FALSE;
|
|
}
|
|
else {
|
|
PRINTF(" trying to recalibrate Try %d\n",retriescal);
|
|
if(fdc_recalibrate(pCMD,pFG)==FALSE) {
|
|
stop_fdc_drive(pCMD);
|
|
enable_interrupts();
|
|
return FALSE;
|
|
}
|
|
retriesrw=0;
|
|
goto retrycal;
|
|
} /* else >FDC_CAL_RETRIES */
|
|
}
|
|
else {
|
|
PRINTF("Read retry %d\n",retriesrw);
|
|
goto retryrw;
|
|
} /* else >FDC_RW_RETRIES */
|
|
}/* if output */
|
|
timeout--;
|
|
}while(TRUE);
|
|
} /* for len */
|
|
/* the last sector of a track or all data has been read,
|
|
* we need to get the results */
|
|
fdc_terminate(pCMD);
|
|
offset+=(sect_size*readblk); /* set up buffer pointer */
|
|
bufferw = &buffer[offset];
|
|
pCMD->blnr+=readblk; /* update current block nr */
|
|
blocks-=readblk; /* update blocks */
|
|
if(blocks==0)
|
|
break; /* we are finish */
|
|
/* setup new read blocks */
|
|
/* readblk=pFG->head*pFG->sect; */
|
|
readblk=pFG->sect;
|
|
if(readblk>blocks)
|
|
readblk=blocks;
|
|
retrycal:
|
|
/* a seek is necessary */
|
|
if(fdc_seek(pCMD,pFG)==FALSE) {
|
|
stop_fdc_drive(pCMD);
|
|
enable_interrupts();
|
|
return FALSE;
|
|
}
|
|
if((pCMD->result[STATUS_0]&0x20)!=0x20) {
|
|
PRINTF("Seek error Status: %02X\n",pCMD->result[STATUS_0]);
|
|
stop_fdc_drive(pCMD);
|
|
return FALSE;
|
|
}
|
|
pcn=pCMD->result[STATUS_PCN]; /* current track */
|
|
}while(TRUE); /* start over */
|
|
stop_fdc_drive(pCMD); /* switch off drive */
|
|
enable_interrupts();
|
|
return TRUE;
|
|
}
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
#undef disable_interrupts()
|
|
#undef enable_interrupts()
|
|
#endif
|
|
|
|
/* Scan all drives and check if drive is present and disk is inserted */
|
|
int fdc_check_drive(FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG)
|
|
{
|
|
int i,drives,state;
|
|
/* OK procedure of data book is satisfied.
|
|
* trying to get some information over the drives */
|
|
state=0; /* no drives, no disks */
|
|
for(drives=0;drives<4;drives++) {
|
|
pCMD->drive=drives;
|
|
select_fdc_drive(pCMD);
|
|
pCMD->blnr=0; /* set to the 1st block */
|
|
if(fdc_recalibrate(pCMD,pFG)==FALSE)
|
|
continue;
|
|
if((pCMD->result[STATUS_0]&0x10)==0x10)
|
|
continue;
|
|
/* ok drive connected check for disk */
|
|
state|=(1<<drives);
|
|
pCMD->blnr=pFG->size; /* set to the last block */
|
|
if(fdc_seek(pCMD,pFG)==FALSE)
|
|
continue;
|
|
pCMD->blnr=0; /* set to the 1st block */
|
|
if(fdc_recalibrate(pCMD,pFG)==FALSE)
|
|
continue;
|
|
pCMD->cmd[COMMAND]=FDC_CMD_READ_ID;
|
|
if(fdc_issue_cmd(pCMD,pFG)==FALSE)
|
|
continue;
|
|
state|=(0x10<<drives);
|
|
}
|
|
stop_fdc_drive(pCMD);
|
|
for(i=0;i<4;i++) {
|
|
PRINTF("Floppy Drive %d %sconnected %sDisk inserted %s\n",i,
|
|
((state&(1<<i))==(1<<i)) ? "":"not ",
|
|
((state&(0x10<<i))==(0x10<<i)) ? "":"no ",
|
|
((state&(0x10<<i))==(0x10<<i)) ? pFG->name : "");
|
|
}
|
|
pCMD->flags=state;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* int fdc_setup
|
|
* setup the fdc according the datasheet
|
|
* assuming in PS2 Mode
|
|
*/
|
|
int fdc_setup(int drive, FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG)
|
|
{
|
|
int i;
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
irq_install_handler(6, (interrupt_handler_t *)fdc_interrupt, NULL);
|
|
i8259_unmask_irq(6);
|
|
#endif
|
|
|
|
#ifdef CONFIG_SYS_FDC_HW_INIT
|
|
fdc_hw_init ();
|
|
#endif
|
|
/* first, we reset the FDC via the DOR */
|
|
write_fdc_reg(FDC_DOR,0x00);
|
|
for(i=0; i<255; i++) /* then we wait some time */
|
|
udelay(500);
|
|
/* then, we clear the reset in the DOR */
|
|
pCMD->drive=drive;
|
|
select_fdc_drive(pCMD);
|
|
/* initialize the CCR */
|
|
write_fdc_reg(FDC_CCR,pFG->rate);
|
|
/* then initialize the DSR */
|
|
write_fdc_reg(FDC_DSR,pFG->rate);
|
|
if(wait_for_fdc_int()==FALSE) {
|
|
PRINTF("Time Out after writing CCR\n");
|
|
return FALSE;
|
|
}
|
|
/* now issue sense Interrupt and status command
|
|
* assuming only one drive present (drive 0) */
|
|
pCMD->dma=0; /* we don't use any dma at all */
|
|
for(i=0;i<4;i++) {
|
|
/* issue sense interrupt for all 4 possible drives */
|
|
pCMD->cmd[COMMAND]=FDC_CMD_SENSE_INT;
|
|
if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
|
|
PRINTF("Sense Interrupt for drive %d failed\n",i);
|
|
}
|
|
}
|
|
/* issue the configure command */
|
|
pCMD->drive=drive;
|
|
select_fdc_drive(pCMD);
|
|
pCMD->cmd[COMMAND]=FDC_CMD_CONFIGURE;
|
|
if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
|
|
PRINTF(" configure timeout\n");
|
|
stop_fdc_drive(pCMD);
|
|
return FALSE;
|
|
}
|
|
/* issue specify command */
|
|
pCMD->cmd[COMMAND]=FDC_CMD_SPECIFY;
|
|
if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
|
|
PRINTF(" specify timeout\n");
|
|
stop_fdc_drive(pCMD);
|
|
return FALSE;
|
|
|
|
}
|
|
/* then, we clear the reset in the DOR */
|
|
/* fdc_check_drive(pCMD,pFG); */
|
|
/* write_fdc_reg(FDC_DOR,0x04); */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#if defined(CONFIG_CMD_FDOS)
|
|
|
|
/* Low level functions for the Floppy-DOS layer */
|
|
|
|
/**************************************************************************
|
|
* int fdc_fdos_init
|
|
* initialize the FDC layer
|
|
*
|
|
*/
|
|
int fdc_fdos_init (int drive)
|
|
{
|
|
FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
|
|
FDC_COMMAND_STRUCT *pCMD = &cmd;
|
|
|
|
/* setup FDC and scan for drives */
|
|
if(fdc_setup(drive,pCMD,pFG)==FALSE) {
|
|
printf("\n** Error in setup FDC **\n");
|
|
return FALSE;
|
|
}
|
|
if(fdc_check_drive(pCMD,pFG)==FALSE) {
|
|
printf("\n** Error in check_drives **\n");
|
|
return FALSE;
|
|
}
|
|
if((pCMD->flags&(1<<drive))==0) {
|
|
/* drive not available */
|
|
printf("\n** Drive %d not available **\n",drive);
|
|
return FALSE;
|
|
}
|
|
if((pCMD->flags&(0x10<<drive))==0) {
|
|
/* no disk inserted */
|
|
printf("\n** No disk inserted in drive %d **\n",drive);
|
|
return FALSE;
|
|
}
|
|
/* ok, we have a valid source */
|
|
pCMD->drive=drive;
|
|
|
|
/* read first block */
|
|
pCMD->blnr=0;
|
|
return TRUE;
|
|
}
|
|
/**************************************************************************
|
|
* int fdc_fdos_seek
|
|
* parameter is a block number
|
|
*/
|
|
int fdc_fdos_seek (int where)
|
|
{
|
|
FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
|
|
FDC_COMMAND_STRUCT *pCMD = &cmd;
|
|
|
|
pCMD -> blnr = where ;
|
|
return (fdc_seek (pCMD, pFG));
|
|
}
|
|
/**************************************************************************
|
|
* int fdc_fdos_read
|
|
* the length is in block number
|
|
*/
|
|
int fdc_fdos_read (void *buffer, int len)
|
|
{
|
|
FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
|
|
FDC_COMMAND_STRUCT *pCMD = &cmd;
|
|
|
|
return (fdc_read_data (buffer, len, pCMD, pFG));
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_FDC)
|
|
/****************************************************************************
|
|
* main routine do_fdcboot
|
|
*/
|
|
int do_fdcboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
|
{
|
|
FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
|
|
FDC_COMMAND_STRUCT *pCMD = &cmd;
|
|
unsigned long addr,imsize;
|
|
image_header_t *hdr; /* used for fdc boot */
|
|
unsigned char boot_drive;
|
|
int i,nrofblk;
|
|
char *ep;
|
|
int rcode = 0;
|
|
#if defined(CONFIG_FIT)
|
|
const void *fit_hdr = NULL;
|
|
#endif
|
|
|
|
switch (argc) {
|
|
case 1:
|
|
addr = CONFIG_SYS_LOAD_ADDR;
|
|
boot_drive=CONFIG_SYS_FDC_DRIVE_NUMBER;
|
|
break;
|
|
case 2:
|
|
addr = simple_strtoul(argv[1], NULL, 16);
|
|
boot_drive=CONFIG_SYS_FDC_DRIVE_NUMBER;
|
|
break;
|
|
case 3:
|
|
addr = simple_strtoul(argv[1], NULL, 16);
|
|
boot_drive=simple_strtoul(argv[2], NULL, 10);
|
|
break;
|
|
default:
|
|
cmd_usage(cmdtp);
|
|
return 1;
|
|
}
|
|
/* setup FDC and scan for drives */
|
|
if(fdc_setup(boot_drive,pCMD,pFG)==FALSE) {
|
|
printf("\n** Error in setup FDC **\n");
|
|
return 1;
|
|
}
|
|
if(fdc_check_drive(pCMD,pFG)==FALSE) {
|
|
printf("\n** Error in check_drives **\n");
|
|
return 1;
|
|
}
|
|
if((pCMD->flags&(1<<boot_drive))==0) {
|
|
/* drive not available */
|
|
printf("\n** Drive %d not availabe **\n",boot_drive);
|
|
return 1;
|
|
}
|
|
if((pCMD->flags&(0x10<<boot_drive))==0) {
|
|
/* no disk inserted */
|
|
printf("\n** No disk inserted in drive %d **\n",boot_drive);
|
|
return 1;
|
|
}
|
|
/* ok, we have a valid source */
|
|
pCMD->drive=boot_drive;
|
|
/* read first block */
|
|
pCMD->blnr=0;
|
|
if(fdc_read_data((unsigned char *)addr,1,pCMD,pFG)==FALSE) {
|
|
printf("\nRead error:");
|
|
for(i=0;i<7;i++)
|
|
printf("result%d: 0x%02X\n",i,pCMD->result[i]);
|
|
return 1;
|
|
}
|
|
|
|
switch (genimg_get_format ((void *)addr)) {
|
|
case IMAGE_FORMAT_LEGACY:
|
|
hdr = (image_header_t *)addr;
|
|
image_print_contents (hdr);
|
|
|
|
imsize = image_get_image_size (hdr);
|
|
break;
|
|
#if defined(CONFIG_FIT)
|
|
case IMAGE_FORMAT_FIT:
|
|
fit_hdr = (const void *)addr;
|
|
puts ("Fit image detected...\n");
|
|
|
|
imsize = fit_get_size (fit_hdr);
|
|
break;
|
|
#endif
|
|
default:
|
|
puts ("** Unknown image type\n");
|
|
return 1;
|
|
}
|
|
|
|
nrofblk=imsize/512;
|
|
if((imsize%512)>0)
|
|
nrofblk++;
|
|
printf("Loading %ld Bytes (%d blocks) at 0x%08lx..\n",imsize,nrofblk,addr);
|
|
pCMD->blnr=0;
|
|
if(fdc_read_data((unsigned char *)addr,nrofblk,pCMD,pFG)==FALSE) {
|
|
/* read image block */
|
|
printf("\nRead error:");
|
|
for(i=0;i<7;i++)
|
|
printf("result%d: 0x%02X\n",i,pCMD->result[i]);
|
|
return 1;
|
|
}
|
|
printf("OK %ld Bytes loaded.\n",imsize);
|
|
|
|
flush_cache (addr, imsize);
|
|
|
|
#if defined(CONFIG_FIT)
|
|
/* This cannot be done earlier, we need complete FIT image in RAM first */
|
|
if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
|
|
if (!fit_check_format (fit_hdr)) {
|
|
puts ("** Bad FIT image format\n");
|
|
return 1;
|
|
}
|
|
fit_print_contents (fit_hdr);
|
|
}
|
|
#endif
|
|
|
|
/* Loading ok, update default load address */
|
|
load_addr = addr;
|
|
|
|
/* Check if we should attempt an auto-start */
|
|
if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
|
|
char *local_args[2];
|
|
extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
|
|
|
|
local_args[0] = argv[0];
|
|
local_args[1] = NULL;
|
|
|
|
printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
|
|
|
|
do_bootm (cmdtp, 0, 1, local_args);
|
|
rcode ++;
|
|
}
|
|
return rcode;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
fdcboot, 3, 1, do_fdcboot,
|
|
"boot from floppy device",
|
|
"loadAddr drive\n"
|
|
);
|
|
#endif
|