diff options
| -rw-r--r-- | en29f002a.c | 85 | ||||
| -rw-r--r-- | flash.h | 23 | ||||
| -rw-r--r-- | flashchips.c | 3 | ||||
| -rw-r--r-- | jedec.c | 20 |
4 files changed, 126 insertions, 5 deletions
diff --git a/en29f002a.c b/en29f002a.c new file mode 100644 index 0000000..e2b4f9b --- /dev/null +++ b/en29f002a.c @@ -0,0 +1,85 @@ +/* + * This file is part of the flashrom project. + * + * Copyright (C) 2007 Carl-Daniel Hailfinger + * + * 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 + */ + +/* + EN29F512 has 1C,21 + EN29F010 has 1C,20 + EN29F040A has 1C,04 + EN29LV010 has 1C,6E and uses short F0 reset sequence + EN29LV040(A) has 1C,4F and uses short F0 reset sequence + */ +int probe_en29f512(struct flashchip *flash) +{ + volatile uint8_t *bios = flash->virtual_memory; + uint8_t id1, id2; + + *(volatile uint8_t *)(bios + 0x555) = 0xAA; + *(volatile uint8_t *)(bios + 0x2AA) = 0x55; + *(volatile uint8_t *)(bios + 0x555) = 0x90; + + myusec_delay(10); + + id1 = *(volatile uint8_t *)(bios + 0x100); + id2 = *(volatile uint8_t *)(bios + 0x101); + + /* exit by writing F0 anywhere? or the code below */ + *(volatile uint8_t *)(bios + 0x555) = 0xAA; + *(volatile uint8_t *)(bios + 0x2AA) = 0x55; + *(volatile uint8_t *)(bios + 0x555) = 0xF0; + + printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2); + + if (id1 == flash->manufacture_id && id2 == flash->model_id) + return 1; + + return 0; +} + +/* + EN29F002AT has 1C,92 + EN29F002AB has 1C,97 + */ +int probe_en29f002a(struct flashchip *flash) +{ + volatile uint8_t *bios = flash->virtual_memory; + uint8_t id1, id2; + + *(volatile uint8_t *)(bios + 0x555) = 0xAA; + *(volatile uint8_t *)(bios + 0xAAA) = 0x55; + *(volatile uint8_t *)(bios + 0x555) = 0x90; + + myusec_delay(10); + + id1 = *(volatile uint8_t *)(bios + 0x100); + id2 = *(volatile uint8_t *)(bios + 0x101); + + /* exit by writing F0 anywhere? or the code below */ + *(volatile uint8_t *)(bios + 0x555) = 0xAA; + *(volatile uint8_t *)(bios + 0xAAA) = 0x55; + *(volatile uint8_t *)(bios + 0x555) = 0xF0; + + printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2); + + if (id1 == flash->manufacture_id && id2 == flash->model_id) + return 1; + + return 0; +} + @@ -32,8 +32,12 @@ struct flashchip { const char *name; - int manufacture_id; - int model_id; + /* With 32bit manufacture_id and model_id we can cover IDs up to + * (including) the 4th bank of JEDEC JEP106W Standard Manufacturer's + * Identification code. + */ + uint32_t manufacture_id; + uint32_t model_id; int total_size; int page_size; @@ -85,8 +89,14 @@ extern struct flashchip flashchips[]; /* * EN25 chips are SPI, first byte of device ID is memory type, * second byte of device ID is log(bitsize)-9. + * Vendor and device ID of EN29 series are both prefixed with 0x7F, which + * is the continuation code for IDs in bank 2. + * Vendor ID of EN25 series is NOT prefixed with 0x7F, this results in + * a collision with Mitsubishi. Mitsubishi once manufactured flash chips. + * Let's hope they are not manufacturing SPI flash chips as well. */ -#define EON_ID 0x1C /* EON Silicon Devices */ +#define EON_ID 0x7F1C /* EON Silicon Devices */ +#define EON_ID_NOPREFIX 0x1C /* EON, missing 0x7F prefix */ #define EN_25B05 0x2010 /* 2^19 kbit or 2^16 kByte */ #define EN_25B10 0x2011 #define EN_25B20 0x2012 @@ -94,6 +104,13 @@ extern struct flashchip flashchips[]; #define EN_25B80 0x2014 #define EN_25B16 0x2015 #define EN_25B32 0x2016 +#define EN_29F512 0x7F21 +#define EN_29F010 0x7F20 +#define EN_29F040A 0x7F04 +#define EN_29LV010 0x7F6E +#define EN_29LV040A 0x7F4F /* EN_29LV040(A) */ +#define EN_29F002AT 0x7F92 +#define EN_29F002AB 0x7F97 #define FUJITSU_ID 0x04 /* Fujitsu */ /* MBM29F400TC_STRANGE has a value not mentioned in the data sheet and we diff --git a/flashchips.c b/flashchips.c index 2bd039d..71f2d8e 100644 --- a/flashchips.c +++ b/flashchips.c @@ -42,6 +42,9 @@ struct flashchip flashchips[] = { probe_jedec, erase_chip_jedec, write_jedec}, {"At49F002(N)T",ATMEL_ID, AT_49F002NT, 256, 256, probe_jedec, erase_chip_jedec, write_jedec}, + /* The EN29F002AT can do byte program at arbitrary boundaries. */ + {"EN29F002AT", EON_ID, EN_29F002AT, 256, 256, + probe_jedec, erase_chip_jedec, write_jedec}, {"MBM29F400TC", FUJITSU_ID, MBM29F400TC_STRANGE, 512, 64 * 1024, probe_m29f400bt, erase_m29f400bt, write_linuxbios_m29f400bt}, {"MX29F002", MX_ID, MX_29F002, 256, 64 * 1024, @@ -4,6 +4,7 @@ * Copyright (C) 2000 Silicon Integrated System Corporation * Copyright (C) 2006 Giampiero Giancipoli <gianci@email.it> * Copyright (C) 2006 coresystems GmbH <info@coresystems.de> + * Copyright (C) 2007 Carl-Daniel Hailfinger * * 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 @@ -82,6 +83,7 @@ int probe_jedec(struct flashchip *flash) { volatile uint8_t *bios = flash->virtual_memory; uint8_t id1, id2; + uint32_t largeid1, largeid2; /* Issue JEDEC Product ID Entry command */ *(volatile uint8_t *)(bios + 0x5555) = 0xAA; @@ -98,6 +100,20 @@ int probe_jedec(struct flashchip *flash) /* Read product ID */ id1 = *(volatile uint8_t *)bios; id2 = *(volatile uint8_t *)(bios + 0x01); + largeid1 = id1; + largeid2 = id2; + + /* Check if it is a continuation ID, this should be a while loop. */ + if (id1 == 0x7F) { + largeid1 <<= 8; + id1 = *(volatile uint8_t *)(bios + 0x100); + largeid1 |= id1; + } + if (id2 == 0x7F) { + largeid2 <<= 8; + id2 = *(volatile uint8_t *)(bios + 0x101); + largeid2 |= id2; + } /* Issue JEDEC Product ID Exit command */ *(volatile uint8_t *)(bios + 0x5555) = 0xAA; @@ -107,8 +123,8 @@ int probe_jedec(struct flashchip *flash) *(volatile uint8_t *)(bios + 0x5555) = 0xF0; myusec_delay(40); - printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2); - if (id1 == flash->manufacture_id && id2 == flash->model_id) + printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, largeid1, largeid2); + if (largeid1 == flash->manufacture_id && largeid2 == flash->model_id) return 1; return 0; |
