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flashrom/msys_doc.c
Uwe Hermann d110764ccd Change all flashrom license headers to use our standard format 
No changes in content of the files.

Corresponding to flashrom svn r131 and coreboot v2 svn r2751.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
2007-08-29 17:52:32 +00:00

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7.7 KiB
C
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/*
* This file is part of the flashrom project.
*
* Copyright 2003 Niki W. Waibel <niki.waibel@gmx.net>
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <unistd.h>
#include "flash.h"
#include "msys_doc.h"
static int doc_wait(volatile uint8_t *bios, int timeout);
static uint8_t doc_read_chipid(volatile uint8_t *bios);
static uint8_t doc_read_docstatus(volatile uint8_t *bios);
static uint8_t doc_read_cdsncontrol(volatile uint8_t *bios);
static void doc_write_cdsncontrol(volatile uint8_t *bios, uint8_t data);
int probe_md2802(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
uint8_t chipid;
#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
uint8_t id_0x55, id_0xAA;
#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
int i, toggle_a, toggle_b;
printf_debug("%s:\n", __FUNCTION__);
printf_debug("%s: *******************************\n", __FUNCTION__);
printf_debug("%s: * THIS IS A PRE ALPHA VERSION *\n", __FUNCTION__);
printf_debug("%s: * IN THE DEVELOPEMENT *********\n", __FUNCTION__);
printf_debug("%s: * PROCESS RIGHT NOW. **********\n", __FUNCTION__);
printf_debug("%s: *******************************\n", __FUNCTION__);
printf_debug("%s: * IF YOU ARE NOT A DEVELOPER **\n", __FUNCTION__);
printf_debug("%s: * THEN DO NOT TRY TO READ OR **\n", __FUNCTION__);
printf_debug("%s: * WRITE TO THIS DEVICE ********\n", __FUNCTION__);
printf_debug("%s: *******************************\n", __FUNCTION__);
printf_debug("%s:\n", __FUNCTION__);
printf_debug("%s: switching off reset mode ...\n", __FUNCTION__);
doc_write(0x85, bios, DOCControl);
doc_write(0x85, bios, DOCControl);
doc_read_4nop(bios);
if (doc_wait(bios, 5000))
return (-1);
printf("%s: switching off reset mode ... done\n", __FUNCTION__);
printf("%s:\n", __FUNCTION__);
printf("%s: switching off write protection ...\n", __FUNCTION__);
doc_write_cdsncontrol(bios, doc_read_cdsncontrol(bios) & (~0x08));
printf("%s: switching off write protection ... done\n", __FUNCTION__);
printf("%s:\n", __FUNCTION__);
chipid = doc_read_chipid(bios);
#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
id_0x55 = doc_read(bios, IPL_0x0000);
id_0xAA = doc_read(bios, IPL_0x0001);
#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
printf("%s: IPL_0x0000: 0x%02x\n", __FUNCTION__, id_0x55);
printf("%s: IPL_0x0001: 0x%02x\n", __FUNCTION__, id_0xAA);
printf("%s: IPL_0x0002: 0x%02x\n", __FUNCTION__,
doc_read(bios, IPL_0x0002));
printf("%s: IPL_0x0003: 0x%02x\n", __FUNCTION__,
doc_read(bios, IPL_0x0003));
printf("%s:\n", __FUNCTION__);
printf("%s: ChipID: 0x%02x\n", __FUNCTION__, chipid);
printf("%s: DOCStatus: 0x%02x\n", __FUNCTION__,
doc_read_docstatus(bios));
printf("%s: FloorSelect: 0x%02x\n", __FUNCTION__,
doc_read(bios, FloorSelect));
printf("%s: CDSNControl: 0x%02x\n", __FUNCTION__,
doc_read_cdsncontrol(bios));
printf("%s: CDSNDeviceSelect: 0x%02x\n", __FUNCTION__,
doc_read(bios, CDSNDeviceSelect));
printf("%s: ECCConfiguration: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCConfiguration));
printf("%s: CDSNSlowIO: 0x%02x\n", __FUNCTION__,
doc_read(bios, CDSNSlowIO));
printf("%s: ECCSyndrome0: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome0));
printf("%s: ECCSyndrome1: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome1));
printf("%s: ECCSyndrome2: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome2));
printf("%s: ECCSyndrome3: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome3));
printf("%s: ECCSyndrome4: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome4));
printf("%s: ECCSyndrome5: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome5));
printf("%s: AliasResolution: 0x%02x\n", __FUNCTION__,
doc_read(bios, AliasResolution));
printf("%s: ConfigurationInput: 0x%02x\n", __FUNCTION__,
doc_read(bios, ConfigurationInput));
printf("%s: ReadPipelineInitialization: 0x%02x\n", __FUNCTION__,
doc_read(bios, ReadPipelineInitialization));
printf("%s: LastDataRead: 0x%02x\n", __FUNCTION__,
doc_read(bios, LastDataRead));
printf("%s:\n", __FUNCTION__);
printf("%s: checking ECCConfiguration toggle bit\n", __FUNCTION__);
printf("%s:", __FUNCTION__);
toggle_a = toggle_b = 0;
for (i = 0; i < 10; i++) {
uint8_t toggle = doc_toggle(bios);
printf(" 0x%02x", toggle);
if (i % 2)
toggle_a += toggle;
else
toggle_b += toggle;
} /* for(i=0; i<10; i++) */
printf("\n%s: toggle result: %d/%d\n", __FUNCTION__, toggle_a,
toggle_b);
if (chipid == flash->model_id && ((toggle_a == 5 && toggle_b == 0)
|| (toggle_a == 0 && toggle_b == 5))
#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
&& id_0x55 == 0x55 && id_0xAA == 0xaa
#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
) {
return 1;
}
return 0;
}
int read_md2802(struct flashchip *flash, uint8_t *buf)
{
return 0;
}
int erase_md2802(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
return 1;
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
*(volatile uint8_t *)(bios + 0x5555) = 0x80;
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
*(volatile uint8_t *)(bios + 0x5555) = 0x10;
}
int write_md2802(struct flashchip *flash, uint8_t *buf)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virtual_memory;
return (1);
erase_md2802(flash);
if (*bios != (uint8_t) 0xff) {
printf("ERASE FAILED\n");
return -1;
}
printf("Programming Page: ");
for (i = 0; i < total_size / page_size; i++) {
printf("%04d at address: 0x%08x", i, i * page_size);
//write_page_md2802(bios, buf + i * page_size, bios + i * page_size, page_size);
printf
("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
}
printf("\n");
//protect_md2802(bios);
return 0;
} /* int write_md2802(struct flashchip *flash, uint8_t *buf) */
/*
wait timeout msec for doc to become ready
return:
0: ready
-1: timeout expired
*/
static int doc_wait(volatile uint8_t *bios, int timeout)
{
int i = 20;
doc_read_4nop(bios);
while (_doc_busy(bios) && (i != 0)) {
usleep(timeout * 1000 / 20);
i--;
}
doc_read_2nop(bios);
if (_doc_busy(bios)) {
doc_read_2nop(bios);
return (-1);
}
return 0;
}
static uint8_t doc_read_docstatus(volatile uint8_t *bios)
{
doc_read(bios, CDSNSlowIO);
doc_read_2nop(bios);
return (doc_read(bios, _DOCStatus));
}
static uint8_t doc_read_chipid(volatile uint8_t *bios)
{
doc_read(bios, CDSNSlowIO);
doc_read_2nop(bios);
return (doc_read(bios, _ChipID));
}
static uint8_t doc_read_cdsncontrol(volatile uint8_t *bios)
{
uint8_t value;
/* the delays might be necessary when reading the busy bit,
but because a read to this reg reads the busy bit
anyway we better do this delays... */
doc_read_4nop(bios);
value = doc_read(bios, _CDSNControl);
doc_read_2nop(bios);
return value;
}
static void doc_write_cdsncontrol(volatile uint8_t *bios, uint8_t data)
{
doc_write(data, bios, _CDSNControl);
doc_read_4nop(bios);
}
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