From 43d9616cffb4a130e1620e3e33fc9bc1bcabe399 Mon Sep 17 00:00:00 2001 From: wdenk Date: Thu, 6 Mar 2003 00:02:04 +0000 Subject: * Patch by Robert Schwebel, 21 Jan 2003: - Add support for Innokom board - Don't complain if "install" fails - README cleanup (remove duplicated lines) - Update PXA header files * Add documentation for existing POST code (doc/README.POST) * Patch by Laudney Ren, 15 Jan 2003: Fix handling of redundand environment in "tools/envcrc.c" * Patch by Detlev Zundel, 28 Feb 2003: Add bedbug support for 824x systems * Add support for 16 MB flash configuration of TRAB board * Patch by Erwin Rol, 27 Feb 2003: Add support for RTEMS * Add image information to README * Fix dual PCMCIA slot support (when running with just one slot populated) * Add VFD type detection to trab board * extend drivers/cs8900.c driver to synchronize ethaddr environment variable with value in the EEPROM --- board/innokom/flash.c | 377 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 377 insertions(+) create mode 100644 board/innokom/flash.c (limited to 'board/innokom/flash.c') diff --git a/board/innokom/flash.c b/board/innokom/flash.c new file mode 100644 index 0000000..b8e97e1 --- /dev/null +++ b/board/innokom/flash.c @@ -0,0 +1,377 @@ +/* + * (C) Copyright 2002 + * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * Robert Schwebel, Pengutronix, + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 +#include + +#define FLASH_BANK_SIZE 0x02000000 +#define MAIN_SECT_SIZE 0x40000 /* 2x16 = 256k per sector */ + +flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; + + +/** + * flash_init: - initialize data structures for flash chips + * + * @return: size of the flash + */ + +ulong flash_init(void) +{ + int i, j; + ulong size = 0; + + for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { + ulong flashbase = 0; + flash_info[i].flash_id = + (INTEL_MANUFACT & FLASH_VENDMASK) | + (INTEL_ID_28F128J3 & FLASH_TYPEMASK); + flash_info[i].size = FLASH_BANK_SIZE; + flash_info[i].sector_count = CFG_MAX_FLASH_SECT; + memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); + + switch (i) { + case 0: + flashbase = PHYS_FLASH_1; + break; + default: + panic("configured to many flash banks!\n"); + break; + } + for (j = 0; j < flash_info[i].sector_count; j++) { + flash_info[i].start[j] = flashbase + j*MAIN_SECT_SIZE; + } + size += flash_info[i].size; + } + + /* Protect monitor and environment sectors */ + flash_protect(FLAG_PROTECT_SET, + CFG_FLASH_BASE, + CFG_FLASH_BASE + _armboot_end_data - _armboot_start, + &flash_info[0]); + +#ifdef CFG_ENV_IS_IN_FLASH + flash_protect(FLAG_PROTECT_SET, + CFG_ENV_ADDR, + CFG_ENV_ADDR + CFG_ENV_SIZE - 1, + &flash_info[0]); +#endif + + return size; +} + + +/** + * flash_print_info: - print information about the flash situation + * + * @param info: + */ + +void flash_print_info (flash_info_t *info) +{ + int i, j; + + for (j=0; jflash_id & FLASH_VENDMASK) { + + case (INTEL_MANUFACT & FLASH_VENDMASK): + printf("Intel: "); + break; + default: + printf("Unknown Vendor "); + break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + + case (INTEL_ID_28F128J3 & FLASH_TYPEMASK): + printf("28F128J3 (128Mbit)\n"); + break; + default: + printf("Unknown Chip Type\n"); + return; + } + + printf(" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + + printf(" Sector Start Addresses:"); + for (i = 0; i < info->sector_count; i++) { + if ((i % 5) == 0) printf ("\n "); + + printf (" %08lX%s", info->start[i], + info->protect[i] ? " (RO)" : " "); + } + printf ("\n"); + info++; + } +} + + +/** + * flash_erase: - erase flash sectors + * + */ + +int flash_erase(flash_info_t *info, int s_first, int s_last) +{ + int flag, prot, sect; + int rc = ERR_OK; + + if (info->flash_id == FLASH_UNKNOWN) + return ERR_UNKNOWN_FLASH_TYPE; + + if ((s_first < 0) || (s_first > s_last)) { + return ERR_INVAL; + } + + if ((info->flash_id & FLASH_VENDMASK) != (INTEL_MANUFACT & FLASH_VENDMASK)) + return ERR_UNKNOWN_FLASH_VENDOR; + + prot = 0; + for (sect=s_first; sect<=s_last; ++sect) { + if (info->protect[sect]) prot++; + } + + if (prot) return ERR_PROTECTED; + + /* + * Disable interrupts which might cause a timeout + * here. Remember that our exception vectors are + * at address 0 in the flash, and we don't want a + * (ticker) exception to happen while the flash + * chip is in programming mode. + */ + + flag = disable_interrupts(); + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect<=s_last && !ctrlc(); sect++) { + + printf("Erasing sector %2d ... ", sect); + + /* arm simple, non interrupt dependent timer */ + reset_timer_masked(); + + if (info->protect[sect] == 0) { /* not protected */ + u32 * volatile addr = (u32 * volatile)(info->start[sect]); + + /* erase sector: */ + /* The strata flashs are aligned side by side on */ + /* the data bus, so we have to write the commands */ + /* to both chips here: */ + + *addr = 0x00200020; /* erase setup */ + *addr = 0x00D000D0; /* erase confirm */ + + while ((*addr & 0x00800080) != 0x00800080) { + if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) { + *addr = 0x00B000B0; /* suspend erase*/ + *addr = 0x00FF00FF; /* read mode */ + rc = ERR_TIMOUT; + goto outahere; + } + } + + *addr = 0x00500050; /* clear status register cmd. */ + *addr = 0x00FF00FF; /* resest to read mode */ + + } + + printf("ok.\n"); + } + + if (ctrlc()) printf("User Interrupt!\n"); + + outahere: + + /* allow flash to settle - wait 10 ms */ + udelay_masked(10000); + + if (flag) enable_interrupts(); + + return rc; +} + + +/** + * write_word: - copy memory to flash + * + * @param info: + * @param dest: + * @param data: + * @return: + */ + +static int write_word (flash_info_t *info, ulong dest, ushort data) +{ + ushort *addr = (ushort *)dest, val; + int rc = ERR_OK; + int flag; + + /* Check if Flash is (sufficiently) erased */ + if ((*addr & data) != data) return ERR_NOT_ERASED; + + /* + * Disable interrupts which might cause a timeout + * here. Remember that our exception vectors are + * at address 0 in the flash, and we don't want a + * (ticker) exception to happen while the flash + * chip is in programming mode. + */ + flag = disable_interrupts(); + + /* clear status register command */ + *addr = 0x50; + + /* program set-up command */ + *addr = 0x40; + + /* latch address/data */ + *addr = data; + + /* arm simple, non interrupt dependent timer */ + reset_timer_masked(); + + /* wait while polling the status register */ + while(((val = *addr) & 0x80) != 0x80) { + if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) { + rc = ERR_TIMOUT; + *addr = 0xB0; /* suspend program command */ + goto outahere; + } + } + + if(val & 0x1A) { /* check for error */ + printf("\nFlash write error %02x at address %08lx\n", + (int)val, (unsigned long)dest); + if(val & (1<<3)) { + printf("Voltage range error.\n"); + rc = ERR_PROG_ERROR; + goto outahere; + } + if(val & (1<<1)) { + printf("Device protect error.\n"); + rc = ERR_PROTECTED; + goto outahere; + } + if(val & (1<<4)) { + printf("Programming error.\n"); + rc = ERR_PROG_ERROR; + goto outahere; + } + rc = ERR_PROG_ERROR; + goto outahere; + } + + outahere: + + *addr = 0xFF; /* read array command */ + if (flag) enable_interrupts(); + + return rc; +} + + +/** + * write_buf: - Copy memory to flash. + * + * @param info: + * @param src: source of copy transaction + * @param addr: where to copy to + * @param cnt: number of bytes to copy + * + * @return error code + */ + +int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) +{ + ulong cp, wp; + ushort data; + int l; + int i, rc; + + wp = (addr & ~1); /* get lower word aligned address */ + + /* + * handle unaligned start bytes + */ + if ((l = addr - wp) != 0) { + data = 0; + for (i=0, cp=wp; i> 8) | (*(uchar *)cp << 8); + } + for (; i<2 && cnt>0; ++i) { + data = (data >> 8) | (*src++ << 8); + --cnt; + ++cp; + } + for (; cnt==0 && i<2; ++i, ++cp) { + data = (data >> 8) | (*(uchar *)cp << 8); + } + + if ((rc = write_word(info, wp, data)) != 0) { + return (rc); + } + wp += 2; + } + + /* + * handle word aligned part + */ + while (cnt >= 2) { + /* data = *((vushort*)src); */ + data = *((ushort*)src); + if ((rc = write_word(info, wp, data)) != 0) { + return (rc); + } + src += 2; + wp += 2; + cnt -= 2; + } + + if (cnt == 0) return ERR_OK; + + /* + * handle unaligned tail bytes + */ + data = 0; + for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) { + data = (data >> 8) | (*src++ << 8); + --cnt; + } + for (; i<2; ++i, ++cp) { + data = (data >> 8) | (*(uchar *)cp << 8); + } + + return write_word(info, wp, data); +} + -- cgit v1.1