diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | flash.h | 3 | ||||
| -rw-r--r-- | flashchips.c | 3 | ||||
| -rw-r--r-- | sharplhf00l04.c | 155 | ||||
| -rw-r--r-- | sharplhf00l04.h | 8 |
5 files changed, 170 insertions, 1 deletions
@@ -15,7 +15,7 @@ LDFLAGS = -lpci -static OBJS = flash_enable.o udelay.o jedec.o sst28sf040.o am29f040b.o mx29f002.o \ sst39sf020.o m29f400bt.o w49f002u.o 82802ab.o msys_doc.o pm49fl004.o \ - sst49lf040.o sst_fwhub.o layout.o lbtable.o flashchips.o flash_rom.o + sst49lf040.o sst_fwhub.o layout.o lbtable.o flashchips.o flash_rom.o sharplhf00l04.o all: pciutils dep $(PROGRAM) @@ -34,6 +34,9 @@ extern struct flashchip flashchips[]; #define MX_ID 0xC2 #define MX_29F002 0xB0 +#define SHARP_ID 0xB0 +#define SHARP_LHF00L04 0xCF + #define SST_ID 0xBF /* SST Manufacturer ID code */ #define SST_29EE020A 0x10 /* SST 29EE020 device code */ #define SST_28SF040 0x04 /* SST 29EE040 device code */ diff --git a/flashchips.c b/flashchips.c index 823154a..ba003bf 100644 --- a/flashchips.c +++ b/flashchips.c @@ -36,6 +36,7 @@ #include "sst49lf040.h" #include "pm49fl004.h" #include "mx29f002.h" +#include "sharplhf00l04.h" #include "sst_fwhub.h" struct flashchip flashchips[] = { @@ -85,6 +86,8 @@ struct flashchip flashchips[] = { NULL, 8, 8 * 1024, probe_md2802, erase_md2802, write_md2802, read_md2802}, #endif + {"LHF00L04", SHARP_ID, SHARP_LHF00L04, NULL, 1024, 64 * 1024, + probe_lhf00l04, erase_lhf00l04, write_lhf00l04, NULL}, {NULL,} }; diff --git a/sharplhf00l04.c b/sharplhf00l04.c new file mode 100644 index 0000000..e7e5eed --- /dev/null +++ b/sharplhf00l04.c @@ -0,0 +1,155 @@ +/* + * sst28sf040.c: driver for SST28SF040C flash models. + * + * + * Copyright 2000 Silicon Integrated System Corporation + * Copyright 2005 coresystems GmbH <stepan@openbios.org> + * + * 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. + * + * + * Reference: + * 8 MEgabit (1024K x 8) SHARP LHF00L04, data sheet + * + */ + +#include <stdio.h> +#include <stdint.h> +#include "flash.h" +#include "debug.h" + + +#define AUTO_PG_ERASE1 0x20 +#define AUTO_PG_ERASE2 0xD0 +#define AUTO_PGRM 0x10 +#define CHIP_ERASE 0x30 +#define RESET 0xFF +#define READ_ID 0x90 + +static __inline__ void protect_lhf00l04(volatile uint8_t *bios) +{ + /* ask compiler not to optimize this */ +// volatile uint8_t tmp; + +} + +static __inline__ void unprotect_lhf00l04(volatile uint8_t *bios) +{ + /* ask compiler not to optimize this */ +// volatile uint8_t tmp; +} + +static __inline__ int erase_sector_lhf00l04(volatile uint8_t *bios, + unsigned long address) +{ + + return (0); +} + +static __inline__ int write_sector_lhf00l04(volatile uint8_t *bios, + uint8_t *src, + volatile uint8_t *dst, + unsigned int page_size) +{ + int i; + + for (i = 0; i < page_size; i++) { + /* transfer data from source to destination */ + if (*src == 0xFF) { + dst++, src++; + /* If the data is 0xFF, don't program it */ + continue; + } + /*issue AUTO PROGRAM command */ + *dst = AUTO_PGRM; + *dst++ = *src++; + + /* wait for Toggle bit ready */ +// toggle_ready_jedec(bios); + } + + return (0); +} + +int probe_lhf00l04(struct flashchip *flash) +{ + volatile uint8_t *bios = flash->virt_addr; + uint8_t id1, id2, tmp; + + /* save the value at the beginning of the Flash */ + tmp = *bios; + + *bios = RESET; + myusec_delay(10); + + *bios = READ_ID; + myusec_delay(10); + id1 = *(volatile uint8_t *) bios; + myusec_delay(10); + id2 = *(volatile uint8_t *) (bios + 0x01); + + *bios = RESET; + myusec_delay(10); + + printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2); + if (id1 == flash->manufacture_id && id2 == flash->model_id) + return 1; + + /* if there is no lhf00l04, restore the original value */ + *bios = tmp; + return 0; +} + +int erase_lhf00l04(struct flashchip *flash) +{ + volatile uint8_t *bios = flash->virt_addr; + + unprotect_lhf00l04(bios); + *bios = CHIP_ERASE; + *bios = CHIP_ERASE; + protect_lhf00l04(bios); + + myusec_delay(10); +// toggle_ready_jedec(bios); + + return (0); +} + +int write_lhf00l04(struct flashchip *flash, uint8_t *buf) +{ + int i; + int total_size = flash->total_size * 1024, page_size = + flash->page_size; + volatile uint8_t *bios = flash->virt_addr; + + unprotect_lhf00l04(bios); + + printf("Programming Page: "); + for (i = 0; i < total_size / page_size; i++) { + /* erase the page before programming */ + erase_sector_lhf00l04(bios, i * page_size); + + /* write to the sector */ + printf("%04d at address: 0x%08x", i, i * page_size); + write_sector_lhf00l04(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_lhf00l04(bios); + + return (0); +} diff --git a/sharplhf00l04.h b/sharplhf00l04.h new file mode 100644 index 0000000..d615dfa --- /dev/null +++ b/sharplhf00l04.h @@ -0,0 +1,8 @@ +#ifndef __SHARPLHF00L04_H__ +#define __SHARPLHF00L04_H__ 1 + +extern int probe_lhf00l04(struct flashchip *flash); +extern int erase_lhf00l04(struct flashchip *flash); +extern int write_lhf00l04(struct flashchip *flash, uint8_t *buf); + +#endif /* !__SHARPLHF00L04_H__ */ |
