Author: uwe Date: Sun Apr 15 00:51:40 2012 New Revision: 1521 URL: http://flashrom.org/trac/flashrom/changeset/1521
Log: Add support for the Eon EN29LV640B chip. This chip needs special command sequences in 8 bit mode. Also, 8 bit programming needs actually 16bit double byte program. The chip is found on the Bifferos Bifferboard, for example. Signed-off-by: Rudolf Marek <[email protected]> Acked-by: Uwe Hermann <[email protected]> Added: trunk/en29lv640b.c Modified: trunk/Makefile trunk/chipdrivers.h trunk/flashchips.c trunk/flashchips.h Modified: trunk/Makefile ============================================================================== --- trunk/Makefile Sat Apr 14 23:59:23 2012 (r1520) +++ trunk/Makefile Sun Apr 15 00:51:40 2012 (r1521) @@ -261,7 +261,7 @@ CHIP_OBJS = jedec.o stm50flw0x0x.o w39.o w29ee011.o \ sst28sf040.o m29f400bt.o 82802ab.o pm49fl00x.o \ sst49lfxxxc.o sst_fwhub.o flashchips.o spi.o spi25.o sharplhf00l04.o \ - a25.o at25.o opaque.o sfdp.o + a25.o at25.o opaque.o sfdp.o en29lv640b.o LIB_OBJS = layout.o Modified: trunk/chipdrivers.h ============================================================================== --- trunk/chipdrivers.h Sat Apr 14 23:59:23 2012 (r1520) +++ trunk/chipdrivers.h Sun Apr 15 00:51:40 2012 (r1521) @@ -157,4 +157,10 @@ int erase_sector_stm50flw0x0x(struct flashctx *flash, unsigned int block, unsigned int blocksize); int unlock_stm50flw0x0x(struct flashctx *flash); +/* en29lv640b.c */ +int probe_en29lv640b(struct flashctx *flash); +int block_erase_en29lv640b(struct flashctx *flash, unsigned int start, unsigned int len); +int block_erase_chip_en29lv640b(struct flashctx *flash, unsigned int start, unsigned int len); +int write_en29lv640b(struct flashctx *flash, uint8_t *buf, unsigned int start, unsigned int len); + #endif /* !__CHIPDRIVERS_H__ */ Added: trunk/en29lv640b.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ trunk/en29lv640b.c Sun Apr 15 00:51:40 2012 (r1521) @@ -0,0 +1,138 @@ +/* + * This file is part of the flashrom project. + * + * Copyright (C) 2000 Silicon Integrated System Corporation + * Copyright (C) 2012 Rudolf Marek <[email protected]> + * + * 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 "flash.h" +#include "chipdrivers.h" + +/* + * WARNING! + * This chip uses the standard JEDEC addresses in 16-bit mode as word + * addresses. In byte mode, 0xAAA has to be used instead of 0x555 and + * 0x555 instead of 0x2AA. Do *not* blindly replace with standard JEDEC + * functions. + */ + +/* chunksize is 1 */ +int write_en29lv640b(struct flashctx *flash, uint8_t *src, unsigned int start, + unsigned int len) +{ + int i; + chipaddr bios = flash->virtual_memory; + chipaddr dst = flash->virtual_memory + start; + + for (i = 0; i < len; i += 2) { + chip_writeb(flash, 0xAA, bios + 0xAAA); + chip_writeb(flash, 0x55, bios + 0x555); + chip_writeb(flash, 0xA0, bios + 0xAAA); + + /* Transfer data from source to destination. */ + chip_writew(flash, (*src) | ((*(src + 1)) << 8 ), dst); + toggle_ready_jedec(flash, dst); +#if 0 + /* We only want to print something in the error case. */ + msg_cerr("Value in the flash at address 0x%lx = %#x, want %#x\n", + (dst - bios), chip_readb(flash, dst), *src); +#endif + dst += 2; + src += 2; + } + + /* FIXME: Ignore errors for now. */ + return 0; +} + +int probe_en29lv640b(struct flashctx *flash) +{ + chipaddr bios = flash->virtual_memory; + uint16_t id1, id2; + + chip_writeb(flash, 0xAA, bios + 0xAAA); + chip_writeb(flash, 0x55, bios + 0x555); + chip_writeb(flash, 0x90, bios + 0xAAA); + + programmer_delay(10); + + id1 = chip_readb(flash, bios + 0x200); + id1 |= (chip_readb(flash, bios) << 8); + + id2 = chip_readb(flash, bios + 0x02); + + chip_writeb(flash, 0xF0, bios + 0xAAA); + + programmer_delay(10); + + msg_cdbg("%s: id1 0x%04x, id2 0x%04x\n", __func__, id1, id2); + + if (id1 == flash->manufacture_id && id2 == flash->model_id) + return 1; + + return 0; +} + +int erase_en29lv640b(struct flashctx *flash) +{ + chipaddr bios = flash->virtual_memory; + + chip_writeb(flash, 0xAA, bios + 0xAAA); + chip_writeb(flash, 0x55, bios + 0x555); + chip_writeb(flash, 0x80, bios + 0xAAA); + + chip_writeb(flash, 0xAA, bios + 0xAAA); + chip_writeb(flash, 0x55, bios + 0x555); + chip_writeb(flash, 0x10, bios + 0xAAA); + + programmer_delay(10); + toggle_ready_jedec(flash, bios); + + /* FIXME: Check the status register for errors. */ + return 0; +} + +int block_erase_en29lv640b(struct flashctx *flash, unsigned int start, + unsigned int len) +{ + chipaddr bios = flash->virtual_memory; + chipaddr dst = bios + start; + + chip_writeb(flash, 0xAA, bios + 0xAAA); + chip_writeb(flash, 0x55, bios + 0x555); + chip_writeb(flash, 0x80, bios + 0xAAA); + + chip_writeb(flash, 0xAA, bios + 0xAAA); + chip_writeb(flash, 0x55, bios + 0x555); + chip_writeb(flash, 0x30, dst); + + programmer_delay(10); + toggle_ready_jedec(flash, bios); + + /* FIXME: Check the status register for errors. */ + return 0; +} + +int block_erase_chip_en29lv640b(struct flashctx *flash, unsigned int address, + unsigned int blocklen) +{ + if ((address != 0) || (blocklen != flash->total_size * 1024)) { + msg_cerr("%s called with incorrect arguments\n", __func__); + return -1; + } + return erase_en29lv640b(flash); +} Modified: trunk/flashchips.c ============================================================================== --- trunk/flashchips.c Sat Apr 14 23:59:23 2012 (r1520) +++ trunk/flashchips.c Sun Apr 15 00:51:40 2012 (r1521) @@ -3530,7 +3530,7 @@ .block_erasers = { { - .eraseblocks = { + .eraseblocks = { {16 * 1024, 1}, {8 * 1024, 2}, {32 * 1024, 1}, @@ -3562,7 +3562,7 @@ .block_erasers = { { - .eraseblocks = { + .eraseblocks = { {64 * 1024, 3}, {32 * 1024, 1}, {8 * 1024, 2}, @@ -3580,6 +3580,36 @@ }, { + .vendor = "Eon", + .name = "EN29LV640B", + .bustype = BUS_PARALLEL, + .manufacture_id = EON_ID, + .model_id = EON_EN29LV640B, + .total_size = 8192, + .page_size = 8192, + .feature_bits = 0, + .tested = TEST_OK_PREW, + .probe = probe_en29lv640b, + .probe_timing = TIMING_ZERO, /* Datasheet has no timing info specified */ + .block_erasers = + { + { + .eraseblocks = { + {8 * 1024, 8}, + {64 * 1024, 127}, + }, + .block_erase = block_erase_en29lv640b, + }, { + .eraseblocks = { {8 * 1024 * 1024, 1} }, + .block_erase = block_erase_chip_en29lv640b, + }, + }, + .write = write_en29lv640b, + .read = read_memmapped, + .voltage = {2700, 3600}, + }, + + { .vendor = "Fujitsu", .name = "MBM29F004BC", .bustype = BUS_PARALLEL, Modified: trunk/flashchips.h ============================================================================== --- trunk/flashchips.h Sat Apr 14 23:59:23 2012 (r1520) +++ trunk/flashchips.h Sun Apr 15 00:51:40 2012 (r1521) @@ -256,6 +256,7 @@ #define EON_EN29F040A 0x7F04 #define EON_EN29LV010 0x7F6E #define EON_EN29LV040A 0x7F4F /* EN29LV040(A) */ +#define EON_EN29LV640B 0xCB #define EON_EN29F002T 0x7F92 /* Same as EN29F002A */ #define EON_EN29F002B 0x7F97 /* Same as EN29F002AN */ _______________________________________________ flashrom mailing list [email protected] http://www.flashrom.org/mailman/listinfo/flashrom
