diff options
Diffstat (limited to 'util/flashrom/msys_doc.c')
| -rw-r--r-- | util/flashrom/msys_doc.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/util/flashrom/msys_doc.c b/util/flashrom/msys_doc.c new file mode 100644 index 0000000000..7e9ca9ac08 --- /dev/null +++ b/util/flashrom/msys_doc.c @@ -0,0 +1,282 @@ +/* + * msys_doc.c: driver for programming m-systems doc devices + * + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + + + +#include <stdio.h> +#include <unistd.h> +#include "flash.h" +#include "msys_doc.h" + + + + + +static int doc_wait(volatile char *bios, int timeout); +static unsigned char doc_read_chipid(volatile char *bios); +static unsigned char doc_read_docstatus(volatile char *bios); +static unsigned char doc_read_cdsncontrol(volatile char *bios); +static void doc_write_cdsncontrol(volatile char *bios, unsigned char data); + + + + + +int probe_md2802(struct flashchip *flash) +{ + volatile char *bios = flash->virt_addr; + unsigned char chipid; +#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING + unsigned char id_0x55, id_0xAA; +#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */ + int i, toggle_a, toggle_b; + + printf("%s:\n", __FUNCTION__); + printf("%s: *******************************\n", __FUNCTION__); + printf("%s: * THIS IS A PRE ALPHA VERSION *\n", __FUNCTION__); + printf("%s: * IN THE DEVELOPEMENT *********\n", __FUNCTION__); + printf("%s: * PROCESS RIGHT NOW. **********\n", __FUNCTION__); + printf("%s: *******************************\n", __FUNCTION__); + printf("%s: * IF YOU ARE NOT A DEVELOPER **\n", __FUNCTION__); + printf("%s: * THEN DO NOT TRY TO READ OR **\n", __FUNCTION__); + printf("%s: * WRITE TO THIS DEVICE ********\n", __FUNCTION__); + printf("%s: *******************************\n", __FUNCTION__); + printf("%s:\n", __FUNCTION__); + + printf("%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++) { + unsigned char 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 probe_md2802(struct flashchip *flash) */ + + + +int read_md2802(struct flashchip *flash, unsigned char *buf) +{ + + return (0); +} /* int read_md2802(struct flashchip *flash, unsigned char *buf) */ + + + +int erase_md2802(struct flashchip *flash) +{ + volatile char *bios = flash->virt_addr; + + return (1); + *(volatile char *) (bios + 0x5555) = 0xAA; + *(volatile char *) (bios + 0x2AAA) = 0x55; + *(volatile char *) (bios + 0x5555) = 0x80; + + *(volatile char *) (bios + 0x5555) = 0xAA; + *(volatile char *) (bios + 0x2AAA) = 0x55; + *(volatile char *) (bios + 0x5555) = 0x10; +} /* int erase_md2802(struct flashchip *flash) */ + + + +int write_md2802(struct flashchip *flash, unsigned char *buf) +{ + int i; + int total_size = flash->total_size * 1024, page_size = + flash->page_size; + volatile unsigned char *bios = flash->virt_addr; + + return (1); + erase_md2802(flash); + if (*bios != (unsigned char) 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, char *buf) */ + + + + + + +/* + wait timeout msec for doc to become ready + return: + 0: ready + -1: timeout expired +*/ +static int doc_wait(volatile char *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 int doc_wait(volatile char *bios, int timeout) */ + + + +static unsigned char doc_read_docstatus(volatile char *bios) +{ + doc_read(bios, CDSNSlowIO); + doc_read_2nop(bios); + + return (doc_read(bios, _DOCStatus)); +} /* static unsigned char doc_read_docstatus(volatile char *bios) */ + + + +static unsigned char doc_read_chipid(volatile char *bios) +{ + doc_read(bios, CDSNSlowIO); + doc_read_2nop(bios); + + return (doc_read(bios, _ChipID)); +} /* static unsigned char doc_read_chipid(volatile char *bios) */ + + + +static unsigned char doc_read_cdsncontrol(volatile char *bios) +{ + unsigned char 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 unsigned char doc_read_chipid(volatile char *bios) */ + + + +static void doc_write_cdsncontrol(volatile char *bios, unsigned char data) +{ + doc_write(data, bios, _CDSNControl); + doc_read_4nop(bios); +} /* static void doc_write_chipid(volatile char *bios, unsigned char data) */ |