From 92988a21ad4c4c9504295ccb580c9f806134471b Mon Sep 17 00:00:00 2001 From: "H. Nikolaus Schaller" Date: Mon, 26 Mar 2012 20:55:28 +0200 Subject: added boot script files to repository --- u-boot/board/funkwerk/vovpn-gw/flash.c | 449 +++++++++++++++++++++++++++++++++ 1 file changed, 449 insertions(+) create mode 100644 u-boot/board/funkwerk/vovpn-gw/flash.c (limited to 'u-boot/board/funkwerk/vovpn-gw/flash.c') diff --git a/u-boot/board/funkwerk/vovpn-gw/flash.c b/u-boot/board/funkwerk/vovpn-gw/flash.c new file mode 100644 index 0000000..fd3b16e --- /dev/null +++ b/u-boot/board/funkwerk/vovpn-gw/flash.c @@ -0,0 +1,449 @@ +/* + * (C) Copyright 2004 + * Elmeg Communications Systems GmbH, Juergen Selent (j.selent@elmeg.de) + * + * Support for the Elmeg VoVPN Gateway Module + * ------------------------------------------ + * This is a signle bank flashdriver for INTEL 28F320J3, 28F640J3 + * and 28F128J3A flashs working in 8 Bit mode. + * + * Most of this code is taken from existing u-boot source code. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include + +flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; + +#define FLASH_CMD_READ_ID 0x90 +#define FLASH_CMD_READ_STATUS 0x70 +#define FLASH_CMD_RESET 0xff +#define FLASH_CMD_BLOCK_ERASE 0x20 +#define FLASH_CMD_ERASE_CONFIRM 0xd0 +#define FLASH_CMD_CLEAR_STATUS 0x50 +#define FLASH_CMD_SUSPEND_ERASE 0xb0 +#define FLASH_CMD_WRITE 0x40 +#define FLASH_CMD_WRITE_BUFF 0xe8 +#define FLASH_CMD_PROG_RESUME 0xd0 +#define FLASH_CMD_PROTECT 0x60 +#define FLASH_CMD_PROTECT_SET 0x01 +#define FLASH_CMD_PROTECT_CLEAR 0xd0 +#define FLASH_STATUS_DONE 0x80 + +#define FLASH_WRITE_BUFFER_SIZE 32 + +#ifdef CONFIG_SYS_FLASH_16BIT +#define FLASH_WORD_SIZE unsigned short +#define FLASH_ID_MASK 0xffff +#define FLASH_CMD_ADDR_SHIFT 0 +#else +#define FLASH_WORD_SIZE unsigned char +#define FLASH_ID_MASK 0xff +/* A0 is not used in either 8x or 16x for READ ID */ +#define FLASH_CMD_ADDR_SHIFT 1 +#endif + + +static unsigned long +flash_get(volatile FLASH_WORD_SIZE *addr, flash_info_t *info) +{ + volatile FLASH_WORD_SIZE *p; + FLASH_WORD_SIZE value; + int i; + + addr[0] = FLASH_CMD_READ_ID; + + /* manufactor */ + value = addr[0 << FLASH_CMD_ADDR_SHIFT]; + switch (value) { + case (INTEL_MANUFACT & FLASH_ID_MASK): + info->flash_id = FLASH_MAN_INTEL; + break; + default: + info->flash_id = FLASH_UNKNOWN; + info->sector_count = 0; + info->size = 0; + *addr = FLASH_CMD_RESET; + return (0); + + } + + /* device */ + value = addr[1 << FLASH_CMD_ADDR_SHIFT]; + switch (value) { + case (INTEL_ID_28F320J3A & FLASH_ID_MASK): + info->flash_id += FLASH_28F320J3A; + info->sector_count = 32; + info->size = 0x00400000; + break; + case (INTEL_ID_28F640J3A & FLASH_ID_MASK): + info->flash_id += FLASH_28F640J3A; + info->sector_count = 64; + info->size = 0x00800000; + break; + case (INTEL_ID_28F128J3A & FLASH_ID_MASK): + info->flash_id += FLASH_28F128J3A; + info->sector_count = 128; + info->size = 0x01000000; + break; + default: + info->flash_id = FLASH_UNKNOWN; + info->sector_count = 0; + info->size = 0; + *addr = FLASH_CMD_RESET; + return (0); + } + + /* setup sectors */ + for (i = 0; i < info->sector_count; i++) { + info->start[i] = (unsigned long)addr + (i * info->size/info->sector_count); + } + + /* check protected sectors */ + for (i = 0; i < info->sector_count; i++) { + p = (volatile FLASH_WORD_SIZE *)(info->start[i]); + info->protect[i] = p[2 << FLASH_CMD_ADDR_SHIFT] & 1; + } + + /* reset bank */ + *addr = FLASH_CMD_RESET; + return (info->size); +} + +unsigned long +flash_init(void) +{ + unsigned long size; + int i; + + for (i=0; i= CONFIG_SYS_FLASH_BASE + flash_protect(FLAG_PROTECT_SET, + CONFIG_SYS_MONITOR_FLASH, + CONFIG_SYS_MONITOR_FLASH+CONFIG_SYS_MONITOR_LEN-1, + &flash_info[0]); +#endif +#ifdef CONFIG_ENV_IS_IN_FLASH + flash_protect(FLAG_PROTECT_SET, + CONFIG_ENV_ADDR, + CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, + &flash_info[0]); +#endif + return (size); +} + +void +flash_print_info(flash_info_t *info) +{ + int i; + + if (info->flash_id == FLASH_UNKNOWN) { + printf ("missing or unknown FLASH type\n"); + return; + } + + switch (info->flash_id & FLASH_VENDMASK) { + case FLASH_MAN_INTEL: printf ("INTEL "); break; + default: printf ("Unknown Vendor "); break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case FLASH_28F320J3A: printf ("28F320JA3 (32 Mbit)\n"); + break; + case FLASH_28F640J3A: printf ("28F640JA3 (64 Mbit)\n"); + break; + case FLASH_28F128J3A: printf ("28F128JA3 (128 Mbit)\n"); + break; + default: printf ("Unknown Chip Type"); + break; + } + + printf (" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + + printf (" Sector Start Addresses:"); + for (i=0; isector_count; ++i) { + if ((i % 5) == 0) + printf ("\n "); + printf (" %08lX%s", + info->start[i], + info->protect[i] ? " (RO)" : " " + ); + } + printf ("\n"); +} + +int +flash_erase(flash_info_t *info, int s_first, int s_last) +{ + unsigned long start, now, last; + int flag, prot, sect; + volatile FLASH_WORD_SIZE *addr; + FLASH_WORD_SIZE status; + + if ((s_first < 0) || (s_first > s_last)) { + if (info->flash_id == FLASH_UNKNOWN) { + printf ("- missing\n"); + } else { + printf ("- no sectors to erase\n"); + } + return (1); + } + + if (info->flash_id == FLASH_UNKNOWN) { + printf ("Cannot erase unknown flash - aborted\n"); + return (1); + } + + prot = 0; + for (sect=s_first; sect<=s_last; ++sect) { + if (info->protect[sect]) { + prot++; + } + } + + if (prot) { + printf ("- Warning: %d protected sectors will not be erased!\n", prot); + } else { + printf ("\n"); + } + + start = get_timer (0); + last = start; + + for (sect = s_first; sect<=s_last; sect++) { + if (info->protect[sect]) { + continue; + } + + addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]); + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + +#ifdef DEBUG + printf("Erase sector %d at start addr 0x%08X", sect, (unsigned int)info->start[sect]); +#endif + + *addr = FLASH_CMD_CLEAR_STATUS; + *addr = FLASH_CMD_BLOCK_ERASE; + *addr = FLASH_CMD_ERASE_CONFIRM; + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + + /* wait at least 80us - let's wait 1 ms */ + udelay (1000); + + while (((status = *addr) & FLASH_STATUS_DONE) != FLASH_STATUS_DONE) { + if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { + printf("Flash erase timeout at address %lx\n", info->start[sect]); + *addr = FLASH_CMD_SUSPEND_ERASE; + *addr = FLASH_CMD_RESET; + return (1); + } + + /* show that we're waiting */ + if ((now - last) > 1000) { /* every second */ + putc ('.'); + last = now; + } + } + *addr = FLASH_CMD_RESET; + } + printf (" done\n"); + return (0); +} + +static int +write_buff2( volatile FLASH_WORD_SIZE *dst, + volatile FLASH_WORD_SIZE *src, + unsigned long cnt ) +{ + unsigned long start; + FLASH_WORD_SIZE status; + int flag, i; + + start = get_timer (0); + while (1) { + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + dst[0] = FLASH_CMD_WRITE_BUFF; + if ((status = *dst) & FLASH_STATUS_DONE) { + break; + } + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + + if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { + return (-1); + } + } + dst[0] = (FLASH_WORD_SIZE)(cnt - 1); + for (i=0; i CONFIG_SYS_FLASH_WRITE_TOUT) { + *addr = FLASH_CMD_RESET; + return (-1); + } + } + *addr = FLASH_CMD_RESET; + return (0); +} + +/* + * write_buff return values: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + * 4 - Flash not identified + */ +int +write_buff(flash_info_t *info, uchar *src, ulong udst, ulong cnt) +{ + volatile FLASH_WORD_SIZE *addr, *dst; + unsigned long bcnt; + int flag, i; + + if (info->flash_id == FLASH_UNKNOWN) { + return (4); + } + + addr = (volatile FLASH_WORD_SIZE *)(info->start[0]); + dst = (volatile FLASH_WORD_SIZE *) udst; + +#ifdef CONFIG_SYS_FLASH_16BIT +#error NYI +#else + while (cnt > 0) { + /* Check if buffer write is possible */ + if (cnt > 1 && (((unsigned long)dst & (FLASH_WRITE_BUFFER_SIZE - 1)) == 0)) { + bcnt = cnt > FLASH_WRITE_BUFFER_SIZE ? FLASH_WRITE_BUFFER_SIZE : cnt; + /* Check if Flash is (sufficiently) erased */ + for (i=0; istart[sector]); + *addr = FLASH_CMD_CLEAR_STATUS; + *addr = FLASH_CMD_PROTECT; + + if(prot) { + *addr = FLASH_CMD_PROTECT_SET; + } else { + *addr = FLASH_CMD_PROTECT_CLEAR; + } + + /* wait for error or finish */ + start = get_timer (0); + while(!(addr[0] & FLASH_STATUS_DONE)){ + if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) { + printf("Flash protect timeout at address %lx\n", info->start[sector]); + addr[0] = FLASH_CMD_RESET; + return (1); + } + } + + /* Set software protect flag */ + info->protect[sector] = prot; + *addr = FLASH_CMD_RESET; + return (0); +} -- cgit v1.1