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author | wdenk <wdenk> | 2005-01-09 23:48:14 +0000 |
---|---|---|
committer | wdenk <wdenk> | 2005-01-09 23:48:14 +0000 |
commit | 652a10c0965bcbc64dc88fc54e34bedf1612e66b (patch) | |
tree | 97d783f40d83ec79afe1e46d1bc8c55f16c65d41 /board/sbc405 | |
parent | 6225c5db6cb5a727cbf795678b857b3b66ba0911 (diff) | |
download | bootable_bootloader_goldelico_gta04-652a10c0965bcbc64dc88fc54e34bedf1612e66b.zip bootable_bootloader_goldelico_gta04-652a10c0965bcbc64dc88fc54e34bedf1612e66b.tar.gz bootable_bootloader_goldelico_gta04-652a10c0965bcbc64dc88fc54e34bedf1612e66b.tar.bz2 |
* Patch by Daniel Poirot, 10 Oct 2004:
Add support for Wind River sbc405 board
* Patch by Rainer Brestan, 12 Oct 2004:
Make examples/Makefile more robust
Diffstat (limited to 'board/sbc405')
-rw-r--r-- | board/sbc405/Makefile | 46 | ||||
-rw-r--r-- | board/sbc405/config.mk | 28 | ||||
-rw-r--r-- | board/sbc405/sbc405.c | 114 | ||||
-rw-r--r-- | board/sbc405/strataflash.c | 793 | ||||
-rw-r--r-- | board/sbc405/u-boot.lds | 147 |
5 files changed, 1128 insertions, 0 deletions
diff --git a/board/sbc405/Makefile b/board/sbc405/Makefile new file mode 100644 index 0000000..c4198c4 --- /dev/null +++ b/board/sbc405/Makefile @@ -0,0 +1,46 @@ +# +# (C) Copyright 2000, 2001 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# 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 $(TOPDIR)/config.mk + +LIB = lib$(BOARD).a + +OBJS = $(BOARD).o strataflash.o + +$(LIB): $(OBJS) $(SOBJS) + $(AR) crv $@ $(OBJS) + +clean: + rm -f $(SOBJS) $(OBJS) + +distclean: clean + rm -f $(LIB) core *.bak .depend + +######################################################################### + +.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c) + $(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@ + +sinclude .depend + +######################################################################### diff --git a/board/sbc405/config.mk b/board/sbc405/config.mk new file mode 100644 index 0000000..bd57217 --- /dev/null +++ b/board/sbc405/config.mk @@ -0,0 +1,28 @@ +# +# (C) Copyright 2000, 2001 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# 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 +# + +# +# Wind River sbc405 boards +# + +TEXT_BASE = 0xFFFC0000 diff --git a/board/sbc405/sbc405.c b/board/sbc405/sbc405.c new file mode 100644 index 0000000..ef9bce1 --- /dev/null +++ b/board/sbc405/sbc405.c @@ -0,0 +1,114 @@ +/* + * (C) Copyright 2001 + * + * 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 <common.h> +#include <asm/processor.h> +#include <command.h> +#include <malloc.h> +#include <spd_sdram.h> + + +int board_early_init_f (void) +{ + /* + * IRQ 0-15 405GP internally generated; active high; level sensitive + * IRQ 16 405GP internally generated; active low; level sensitive + * IRQ 17-24 RESERVED + * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive + * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive + * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive + * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive + * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive + * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive + * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive + */ + mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ + mtdcr(uicer, 0x00000000); /* disable all ints */ + mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/ + mtdcr(uicpr, 0xFFFFFF81); /* set int polarities */ + mtdcr(uictr, 0x10000000); /* set int trigger levels */ + mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/ + mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ + + /* + * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us + */ + mtebc (epcr, 0xa8400000); + + return 0; +} + + +/* ------------------------------------------------------------------------- */ + +int misc_init_f (void) +{ + return 0; /* dummy implementation */ +} + + +int misc_init_r (void) +{ + return (0); +} + + +/* + * Check Board Identity: + */ + +int checkboard (void) +{ + unsigned char str[64]; + int i = getenv_r ("serial#", str, sizeof(str)); + + puts ("Board: "); + + if (i == -1) { + puts ("### No HW ID - assuming sbc405"); + } else { + puts(str); + } + + putc ('\n'); + + return 0; +} + +/* ------------------------------------------------------------------------- */ + +long int initdram (int board_type) +{ + return spd_sdram (0); +} + +/* ------------------------------------------------------------------------- */ + +int testdram (void) +{ + /* TODO: XXX XXX XXX */ + printf ("test: 64 MB - ok\n"); + + return (0); +} + +/* ------------------------------------------------------------------------- */ diff --git a/board/sbc405/strataflash.c b/board/sbc405/strataflash.c new file mode 100644 index 0000000..d21d885 --- /dev/null +++ b/board/sbc405/strataflash.c @@ -0,0 +1,793 @@ +/* + * (C) Copyright 2002 + * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com + * + * 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 <common.h> +#include <asm/processor.h> + +#undef DEBUG_FLASH +/* + * This file implements a Common Flash Interface (CFI) driver for ppcboot. + * The width of the port and the width of the chips are determined at initialization. + * These widths are used to calculate the address for access CFI data structures. + * It has been tested on an Intel Strataflash implementation. + * + * References + * JEDEC Standard JESD68 - Common Flash Interface (CFI) + * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes + * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets + * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet + * + * TODO + * Use Primary Extended Query table (PRI) and Alternate Algorithm Query Table (ALT) to determine if protection is available + * Add support for other command sets Use the PRI and ALT to determine command set + * Verify erase and program timeouts. + */ + +#define FLASH_CMD_CFI 0x98 +#define FLASH_CMD_READ_ID 0x90 +#define FLASH_CMD_RESET 0xff +#define FLASH_CMD_BLOCK_ERASE 0x20 +#define FLASH_CMD_ERASE_CONFIRM 0xD0 +#define FLASH_CMD_WRITE 0x40 +#define FLASH_CMD_PROTECT 0x60 +#define FLASH_CMD_PROTECT_SET 0x01 +#define FLASH_CMD_PROTECT_CLEAR 0xD0 +#define FLASH_CMD_CLEAR_STATUS 0x50 +#define FLASH_CMD_WRITE_TO_BUFFER 0xE8 +#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0 + +#define FLASH_STATUS_DONE 0x80 +#define FLASH_STATUS_ESS 0x40 +#define FLASH_STATUS_ECLBS 0x20 +#define FLASH_STATUS_PSLBS 0x10 +#define FLASH_STATUS_VPENS 0x08 +#define FLASH_STATUS_PSS 0x04 +#define FLASH_STATUS_DPS 0x02 +#define FLASH_STATUS_R 0x01 +#define FLASH_STATUS_PROTECT 0x01 + +#define FLASH_OFFSET_CFI 0x55 +#define FLASH_OFFSET_CFI_RESP 0x10 +#define FLASH_OFFSET_WTOUT 0x1F +#define FLASH_OFFSET_WBTOUT 0x20 +#define FLASH_OFFSET_ETOUT 0x21 +#define FLASH_OFFSET_CETOUT 0x22 +#define FLASH_OFFSET_WMAX_TOUT 0x23 +#define FLASH_OFFSET_WBMAX_TOUT 0x24 +#define FLASH_OFFSET_EMAX_TOUT 0x25 +#define FLASH_OFFSET_CEMAX_TOUT 0x26 +#define FLASH_OFFSET_SIZE 0x27 +#define FLASH_OFFSET_INTERFACE 0x28 +#define FLASH_OFFSET_BUFFER_SIZE 0x2A +#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C +#define FLASH_OFFSET_ERASE_REGIONS 0x2D +#define FLASH_OFFSET_PROTECT 0x02 +#define FLASH_OFFSET_USER_PROTECTION 0x85 +#define FLASH_OFFSET_INTEL_PROTECTION 0x81 + + +#define FLASH_MAN_CFI 0x01000000 + + +typedef union { + unsigned char c; + unsigned short w; + unsigned long l; +} cfiword_t; + +typedef union { + unsigned char * cp; + unsigned short *wp; + unsigned long *lp; +} cfiptr_t; + +#define NUM_ERASE_REGIONS 4 + +flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ + + +/*----------------------------------------------------------------------- + * Functions + */ + + +static void flash_add_byte(flash_info_t *info, cfiword_t * cword, uchar c); +static void flash_make_cmd(flash_info_t * info, uchar cmd, void * cmdbuf); +static void flash_write_cmd(flash_info_t * info, int sect, uchar offset, uchar cmd); +static int flash_isequal(flash_info_t * info, int sect, uchar offset, uchar cmd); +static int flash_isset(flash_info_t * info, int sect, uchar offset, uchar cmd); +static int flash_detect_cfi(flash_info_t * info); +static ulong flash_get_size (ulong base, int banknum); +static int flash_write_cfiword (flash_info_t *info, ulong dest, cfiword_t cword); +static int flash_full_status_check(flash_info_t * info, ulong sector, ulong tout, char * prompt); +#ifdef CFG_FLASH_USE_BUFFER_WRITE +static int flash_write_cfibuffer(flash_info_t * info, ulong dest, uchar * cp, int len); +#endif +/*----------------------------------------------------------------------- + * create an address based on the offset and the port width + */ +inline uchar * flash_make_addr(flash_info_t * info, int sect, int offset) +{ + return ((uchar *)(info->start[sect] + (offset * info->portwidth))); +} +/*----------------------------------------------------------------------- + * read a character at a port width address + */ +inline uchar flash_read_uchar(flash_info_t * info, uchar offset) +{ + uchar *cp; + cp = flash_make_addr(info, 0, offset); + return (cp[info->portwidth - 1]); +} + +/*----------------------------------------------------------------------- + * read a short word by swapping for ppc format. + */ +ushort flash_read_ushort(flash_info_t * info, int sect, uchar offset) +{ + uchar * addr; + + addr = flash_make_addr(info, sect, offset); + return ((addr[(2*info->portwidth) - 1] << 8) | addr[info->portwidth - 1]); + +} + +/*----------------------------------------------------------------------- + * read a long word by picking the least significant byte of each maiximum + * port size word. Swap for ppc format. + */ +ulong flash_read_long(flash_info_t * info, int sect, uchar offset) +{ + uchar * addr; + + addr = flash_make_addr(info, sect, offset); + return ( (addr[(2*info->portwidth) - 1] << 24 ) | (addr[(info->portwidth) -1] << 16) | + (addr[(4*info->portwidth) - 1] << 8) | addr[(3*info->portwidth) - 1]); + +} + +/*----------------------------------------------------------------------- + */ +unsigned long flash_init (void) +{ + unsigned long size; + int i; + unsigned long address; + + + /* The flash is positioned back to back, with the demultiplexing of the chip + * based on the A24 address line. + * + */ + + address = CFG_FLASH_BASE; + size = 0; + + /* Init: no FLASHes known */ + for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { + flash_info[i].flash_id = FLASH_UNKNOWN; + size += flash_info[i].size = flash_get_size(address, i); + address += CFG_FLASH_INCREMENT; + if (flash_info[0].flash_id == FLASH_UNKNOWN) { + printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",i, + flash_info[0].size, flash_info[i].size<<20); + } + } + +#if 0 /* test-only */ + /* Monitor protection ON by default */ +#if (CFG_MONITOR_BASE >= CFG_FLASH_BASE) + for(i=0; flash_info[0].start[i] < CFG_MONITOR_BASE+CFG_MONITOR_LEN-1; i++) + (void)flash_real_protect(&flash_info[0], i, 1); +#endif +#else + /* monitor protection ON by default */ + flash_protect (FLAG_PROTECT_SET, + - CFG_MONITOR_LEN, + - 1, &flash_info[1]); +#endif + + return (size); +} + +/*----------------------------------------------------------------------- + */ +int flash_erase (flash_info_t *info, int s_first, int s_last) +{ + int rcode = 0; + int prot; + int sect; + + if( info->flash_id != FLASH_MAN_CFI) { + printf ("Can't erase unknown flash type - aborted\n"); + return 1; + } + if ((s_first < 0) || (s_first > s_last)) { + printf ("- no sectors to erase\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"); + } + + + for (sect = s_first; sect<=s_last; sect++) { + if (info->protect[sect] == 0) { /* not protected */ + flash_write_cmd(info, sect, 0, FLASH_CMD_CLEAR_STATUS); + flash_write_cmd(info, sect, 0, FLASH_CMD_BLOCK_ERASE); + flash_write_cmd(info, sect, 0, FLASH_CMD_ERASE_CONFIRM); + + if(flash_full_status_check(info, sect, info->erase_blk_tout, "erase")) { + rcode = 1; + } else + printf("."); + } + } + printf (" done\n"); + return rcode; +} + +/*----------------------------------------------------------------------- + */ +void flash_print_info (flash_info_t *info) +{ + int i; + + if (info->flash_id != FLASH_MAN_CFI) { + printf ("missing or unknown FLASH type\n"); + return; + } + + printf("CFI conformant FLASH (%d x %d)", + (info->portwidth << 3 ), (info->chipwidth << 3 )); + printf (" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + printf(" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n", + info->erase_blk_tout, info->write_tout, info->buffer_write_tout, info->buffer_size); + + printf (" Sector Start Addresses:"); + for (i=0; i<info->sector_count; ++i) { +#ifdef CFG_FLASH_EMPTY_INFO + int k; + int size; + int erased; + volatile unsigned long *flash; + + /* + * Check if whole sector is erased + */ + if (i != (info->sector_count-1)) + size = info->start[i+1] - info->start[i]; + else + size = info->start[0] + info->size - info->start[i]; + erased = 1; + flash = (volatile unsigned long *)info->start[i]; + size = size >> 2; /* divide by 4 for longword access */ + for (k=0; k<size; k++) + { + if (*flash++ != 0xffffffff) + { + erased = 0; + break; + } + } + + if ((i % 5) == 0) + printf ("\n "); + /* print empty and read-only info */ + printf (" %08lX%s%s", + info->start[i], + erased ? " E" : " ", + info->protect[i] ? "RO " : " "); +#else + if ((i % 5) == 0) + printf ("\n "); + printf (" %08lX%s", + info->start[i], + info->protect[i] ? " (RO)" : " "); +#endif + } + printf ("\n"); + return; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) +{ + ulong wp; + ulong cp; + int aln; + cfiword_t cword; + int i, rc; + + /* get lower aligned address */ + wp = (addr & ~(info->portwidth - 1)); + + /* handle unaligned start */ + if((aln = addr - wp) != 0) { + cword.l = 0; + cp = wp; + for(i=0;i<aln; ++i, ++cp) + flash_add_byte(info, &cword, (*(uchar *)cp)); + + for(; (i< info->portwidth) && (cnt > 0) ; i++) { + flash_add_byte(info, &cword, *src++); + cnt--; + cp++; + } + for(; (cnt == 0) && (i < info->portwidth); ++i, ++cp) + flash_add_byte(info, &cword, (*(uchar *)cp)); + if((rc = flash_write_cfiword(info, wp, cword)) != 0) + return rc; + wp = cp; + } + +#ifdef CFG_FLASH_USE_BUFFER_WRITE + while(cnt >= info->portwidth) { + i = info->buffer_size > cnt? cnt: info->buffer_size; + if((rc = flash_write_cfibuffer(info, wp, src,i)) != ERR_OK) + return rc; + wp += i; + src += i; + cnt -=i; + } +#else + /* handle the aligned part */ + while(cnt >= info->portwidth) { + cword.l = 0; + for(i = 0; i < info->portwidth; i++) { + flash_add_byte(info, &cword, *src++); + } + if((rc = flash_write_cfiword(info, wp, cword)) != 0) + return rc; + wp += info->portwidth; + cnt -= info->portwidth; + } +#endif /* CFG_FLASH_USE_BUFFER_WRITE */ + if (cnt == 0) { + return (0); + } + + /* + * handle unaligned tail bytes + */ + cword.l = 0; + for (i=0, cp=wp; (i<info->portwidth) && (cnt>0); ++i, ++cp) { + flash_add_byte(info, &cword, *src++); + --cnt; + } + for (; i<info->portwidth; ++i, ++cp) { + flash_add_byte(info, & cword, (*(uchar *)cp)); + } + + return flash_write_cfiword(info, wp, cword); +} + +/*----------------------------------------------------------------------- + */ +int flash_real_protect(flash_info_t *info, long sector, int prot) +{ + int retcode = 0; + + flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); + flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT); + if(prot) + flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_SET); + else + flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_CLEAR); + + if((retcode = flash_full_status_check(info, sector, info->erase_blk_tout, + prot?"protect":"unprotect")) == 0) { + + info->protect[sector] = prot; + /* Intel's unprotect unprotects all locking */ + if(prot == 0) { + int i; + for(i = 0 ; i<info->sector_count; i++) { + if(info->protect[i]) + flash_real_protect(info, i, 1); + } + } + } + + return retcode; +} +/*----------------------------------------------------------------------- + * wait for XSR.7 to be set. Time out with an error if it does not. + * This routine does not set the flash to read-array mode. + */ +static int flash_status_check(flash_info_t * info, ulong sector, ulong tout, char * prompt) +{ + ulong start; + + /* Wait for command completion */ + start = get_timer (0); + while(!flash_isset(info, sector, 0, FLASH_STATUS_DONE)) { + if (get_timer(start) > info->erase_blk_tout) { + printf("Flash %s timeout at address %lx\n", prompt, info->start[sector]); + flash_write_cmd(info, sector, 0, FLASH_CMD_RESET); + return ERR_TIMOUT; + } + } + return ERR_OK; +} +/*----------------------------------------------------------------------- + * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check. + * This routine sets the flash to read-array mode. + */ +static int flash_full_status_check(flash_info_t * info, ulong sector, ulong tout, char * prompt) +{ + int retcode; + retcode = flash_status_check(info, sector, tout, prompt); + if((retcode == ERR_OK) && !flash_isequal(info,sector, 0, FLASH_STATUS_DONE)) { + retcode = ERR_INVAL; + printf("Flash %s error at address %lx\n", prompt,info->start[sector]); + if(flash_isset(info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)){ + printf("Command Sequence Error.\n"); + } else if(flash_isset(info, sector, 0, FLASH_STATUS_ECLBS)){ + printf("Block Erase Error.\n"); + retcode = ERR_NOT_ERASED; + } else if (flash_isset(info, sector, 0, FLASH_STATUS_PSLBS)) { + printf("Locking Error\n"); + } + if(flash_isset(info, sector, 0, FLASH_STATUS_DPS)){ + printf("Block locked.\n"); + retcode = ERR_PROTECTED; + } + if(flash_isset(info, sector, 0, FLASH_STATUS_VPENS)) + printf("Vpp Low Error.\n"); + } + flash_write_cmd(info, sector, 0, FLASH_CMD_RESET); + return retcode; +} +/*----------------------------------------------------------------------- + */ +static void flash_add_byte(flash_info_t *info, cfiword_t * cword, uchar c) +{ + switch(info->portwidth) { + case FLASH_CFI_8BIT: + cword->c = c; + break; + case FLASH_CFI_16BIT: + cword->w = (cword->w << 8) | c; + break; + case FLASH_CFI_32BIT: + cword->l = (cword->l << 8) | c; + } +} + + +/*----------------------------------------------------------------------- + * make a proper sized command based on the port and chip widths + */ +static void flash_make_cmd(flash_info_t * info, uchar cmd, void * cmdbuf) +{ + int i; + uchar *cp = (uchar *)cmdbuf; + for(i=0; i< info->portwidth; i++) + *cp++ = ((i+1) % info->chipwidth) ? '\0':cmd; +} + +/* + * Write a proper sized command to the correct address + */ +static void flash_write_cmd(flash_info_t * info, int sect, uchar offset, uchar cmd) +{ + + volatile cfiptr_t addr; + cfiword_t cword; + addr.cp = flash_make_addr(info, sect, offset); + flash_make_cmd(info, cmd, &cword); + switch(info->portwidth) { + case FLASH_CFI_8BIT: + *addr.cp = cword.c; + break; + case FLASH_CFI_16BIT: + *addr.wp = cword.w; + break; + case FLASH_CFI_32BIT: + *addr.lp = cword.l; + break; + } +} + +/*----------------------------------------------------------------------- + */ +static int flash_isequal(flash_info_t * info, int sect, uchar offset, uchar cmd) +{ + cfiptr_t cptr; + cfiword_t cword; + int retval; + cptr.cp = flash_make_addr(info, sect, offset); + flash_make_cmd(info, cmd, &cword); + switch(info->portwidth) { + case FLASH_CFI_8BIT: + retval = (cptr.cp[0] == cword.c); + break; + case FLASH_CFI_16BIT: + retval = (cptr.wp[0] == cword.w); + break; + case FLASH_CFI_32BIT: + retval = (cptr.lp[0] == cword.l); + break; + default: + retval = 0; + break; + } + return retval; +} +/*----------------------------------------------------------------------- + */ +static int flash_isset(flash_info_t * info, int sect, uchar offset, uchar cmd) +{ + cfiptr_t cptr; + cfiword_t cword; + int retval; + cptr.cp = flash_make_addr(info, sect, offset); + flash_make_cmd(info, cmd, &cword); + switch(info->portwidth) { + case FLASH_CFI_8BIT: + retval = ((cptr.cp[0] & cword.c) == cword.c); + break; + case FLASH_CFI_16BIT: + retval = ((cptr.wp[0] & cword.w) == cword.w); + break; + case FLASH_CFI_32BIT: + retval = ((cptr.lp[0] & cword.l) == cword.l); + break; + default: + retval = 0; + break; + } + return retval; +} + +/*----------------------------------------------------------------------- + * detect if flash is compatible with the Common Flash Interface (CFI) + * http://www.jedec.org/download/search/jesd68.pdf + * +*/ +static int flash_detect_cfi(flash_info_t * info) +{ + + for(info->portwidth=FLASH_CFI_8BIT; info->portwidth <= FLASH_CFI_32BIT; + info->portwidth <<= 1) { + for(info->chipwidth =FLASH_CFI_BY8; + info->chipwidth <= info->portwidth; + info->chipwidth <<= 1) { + flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); + flash_write_cmd(info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI); + if(flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP,'Q') && + flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') && + flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) + return 1; + } + } + return 0; +} +/* + * The following code cannot be run from FLASH! + * + */ +static ulong flash_get_size (ulong base, int banknum) +{ + flash_info_t * info = &flash_info[banknum]; + int i, j; + int sect_cnt; + unsigned long sector; + unsigned long tmp; + int size_ratio; + uchar num_erase_regions; + int erase_region_size; + int erase_region_count; + + info->start[0] = base; + + if(flash_detect_cfi(info)){ +#ifdef DEBUG_FLASH + printf("portwidth=%d chipwidth=%d\n", info->portwidth, info->chipwidth); /* test-only */ +#endif + size_ratio = info->portwidth / info->chipwidth; + num_erase_regions = flash_read_uchar(info, FLASH_OFFSET_NUM_ERASE_REGIONS); +#ifdef DEBUG_FLASH + printf("found %d erase regions\n", num_erase_regions); +#endif + sect_cnt = 0; + sector = base; + for(i = 0 ; i < num_erase_regions; i++) { + if(i > NUM_ERASE_REGIONS) { + printf("%d erase regions found, only %d used\n", + num_erase_regions, NUM_ERASE_REGIONS); + break; + } + tmp = flash_read_long(info, 0, FLASH_OFFSET_ERASE_REGIONS); + erase_region_size = (tmp & 0xffff)? ((tmp & 0xffff) * 256): 128; + tmp >>= 16; + erase_region_count = (tmp & 0xffff) +1; + for(j = 0; j< erase_region_count; j++) { + info->start[sect_cnt] = sector; + sector += (erase_region_size * size_ratio); + info->protect[sect_cnt] = flash_isset(info, sect_cnt, FLASH_OFFSET_PROTECT, FLASH_STATUS_PROTECT); + sect_cnt++; + } + } + + info->sector_count = sect_cnt; + /* multiply the size by the number of chips */ + info->size = (1 << flash_read_uchar(info, FLASH_OFFSET_SIZE)) * size_ratio; + info->buffer_size = (1 << flash_read_ushort(info, 0, FLASH_OFFSET_BUFFER_SIZE)); + tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_ETOUT); + info->erase_blk_tout = (tmp * (1 << flash_read_uchar(info, FLASH_OFFSET_EMAX_TOUT))); + tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_WBTOUT); + info->buffer_write_tout = (tmp * (1 << flash_read_uchar(info, FLASH_OFFSET_WBMAX_TOUT))); + tmp = 1 << flash_read_uchar(info, FLASH_OFFSET_WTOUT); + info->write_tout = (tmp * (1 << flash_read_uchar(info, FLASH_OFFSET_WMAX_TOUT)))/ 1000; + info->flash_id = FLASH_MAN_CFI; + } + + flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); + return(info->size); +} + + +/*----------------------------------------------------------------------- + */ +static int flash_write_cfiword (flash_info_t *info, ulong dest, cfiword_t cword) +{ + + cfiptr_t ctladdr; + cfiptr_t cptr; + int flag; + + ctladdr.cp = flash_make_addr(info, 0, 0); + cptr.cp = (uchar *)dest; + + + /* Check if Flash is (sufficiently) erased */ + switch(info->portwidth) { + case FLASH_CFI_8BIT: + flag = ((cptr.cp[0] & cword.c) == cword.c); + break; + case FLASH_CFI_16BIT: + flag = ((cptr.wp[0] & cword.w) == cword.w); + break; + case FLASH_CFI_32BIT: + flag = ((cptr.lp[0] & cword.l) == cword.l); + break; + default: + return 2; + } + if(!flag) + return 2; + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS); + flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE); + + switch(info->portwidth) { + case FLASH_CFI_8BIT: + cptr.cp[0] = cword.c; + break; + case FLASH_CFI_16BIT: + cptr.wp[0] = cword.w; + break; + case FLASH_CFI_32BIT: + cptr.lp[0] = cword.l; + break; + } + + /* re-enable interrupts if necessary */ + if(flag) + enable_interrupts(); + + return flash_full_status_check(info, 0, info->write_tout, "write"); +} + +#ifdef CFG_FLASH_USE_BUFFER_WRITE + +/* loop through the sectors from the highest address + * when the passed address is greater or equal to the sector address + * we have a match + */ +static int find_sector(flash_info_t *info, ulong addr) +{ + int sector; + for(sector = info->sector_count - 1; sector >= 0; sector--) { + if(addr >= info->start[sector]) + break; + } + return sector; +} + +static int flash_write_cfibuffer(flash_info_t * info, ulong dest, uchar * cp, int len) +{ + + int sector; + int cnt; + int retcode; + volatile cfiptr_t src; + volatile cfiptr_t dst; + + src.cp = cp; + dst.cp = (uchar *)dest; + sector = find_sector(info, dest); + flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); + flash_write_cmd(info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER); + if((retcode = flash_status_check(info, sector, info->buffer_write_tout, + "write to buffer")) == ERR_OK) { + switch(info->portwidth) { + case FLASH_CFI_8BIT: + cnt = len; + break; + case FLASH_CFI_16BIT: + cnt = len >> 1; + break; + case FLASH_CFI_32BIT: + cnt = len >> 2; + break; + default: + return ERR_INVAL; + break; + } + flash_write_cmd(info, sector, 0, (uchar)cnt-1); + while(cnt-- > 0) { + switch(info->portwidth) { + case FLASH_CFI_8BIT: + *dst.cp++ = *src.cp++; + break; + case FLASH_CFI_16BIT: + *dst.wp++ = *src.wp++; + break; + case FLASH_CFI_32BIT: + *dst.lp++ = *src.lp++; + break; + default: + return ERR_INVAL; + break; + } + } + flash_write_cmd(info, sector, 0, FLASH_CMD_WRITE_BUFFER_CONFIRM); + retcode = flash_full_status_check(info, sector, info->buffer_write_tout, + "buffer write"); + } + flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS); + return retcode; +} +#endif /* CFG_USE_FLASH_BUFFER_WRITE */ diff --git a/board/sbc405/u-boot.lds b/board/sbc405/u-boot.lds new file mode 100644 index 0000000..bfd71db --- /dev/null +++ b/board/sbc405/u-boot.lds @@ -0,0 +1,147 @@ +/* + * (C) Copyright 2000, 2001 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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 + */ + +OUTPUT_ARCH(powerpc) +SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib); +/* Do we need any of these for elf? + __DYNAMIC = 0; */ +SECTIONS +{ + .resetvec 0xFFFFFFFC : + { + *(.resetvec) + } = 0xffff + + /* Read-only sections, merged into text segment: */ + . = + SIZEOF_HEADERS; + .interp : { *(.interp) } + .hash : { *(.hash) } + .dynsym : { *(.dynsym) } + .dynstr : { *(.dynstr) } + .rel.text : { *(.rel.text) } + .rela.text : { *(.rela.text) } + .rel.data : { *(.rel.data) } + .rela.data : { *(.rela.data) } + .rel.rodata : { *(.rel.rodata) } + .rela.rodata : { *(.rela.rodata) } + .rel.got : { *(.rel.got) } + .rela.got : { *(.rela.got) } + .rel.ctors : { *(.rel.ctors) } + .rela.ctors : { *(.rela.ctors) } + .rel.dtors : { *(.rel.dtors) } + .rela.dtors : { *(.rela.dtors) } + .rel.bss : { *(.rel.bss) } + .rela.bss : { *(.rela.bss) } + .rel.plt : { *(.rel.plt) } + .rela.plt : { *(.rela.plt) } + .init : { *(.init) } + .plt : { *(.plt) } + .text : + { + /* WARNING - the following is hand-optimized to fit within */ + /* the sector layout of our flash chips! XXX FIXME XXX */ + + cpu/ppc4xx/start.o (.text) + cpu/ppc4xx/traps.o (.text) + cpu/ppc4xx/interrupts.o (.text) + cpu/ppc4xx/serial.o (.text) + cpu/ppc4xx/cpu_init.o (.text) + cpu/ppc4xx/speed.o (.text) + cpu/ppc4xx/405gp_enet.o (.text) + common/dlmalloc.o (.text) + lib_generic/crc32.o (.text) + lib_ppc/extable.o (.text) + lib_generic/zlib.o (.text) + +/* . = env_offset;*/ +/* common/environment.o(.text)*/ + + *(.text) + *(.fixup) + *(.got1) + } + _etext = .; + PROVIDE (etext = .); + .rodata : + { + *(.rodata) + *(.rodata1) + *(.rodata.str1.4) + } + .fini : { *(.fini) } =0 + .ctors : { *(.ctors) } + .dtors : { *(.dtors) } + + /* Read-write section, merged into data segment: */ + . = (. + 0x00FF) & 0xFFFFFF00; + _erotext = .; + PROVIDE (erotext = .); + .reloc : + { + *(.got) + _GOT2_TABLE_ = .; + *(.got2) + _FIXUP_TABLE_ = .; + *(.fixup) + } + __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2; + __fixup_entries = (. - _FIXUP_TABLE_)>>2; + + .data : + { + *(.data) + *(.data1) + *(.sdata) + *(.sdata2) + *(.dynamic) + CONSTRUCTORS + } + _edata = .; + PROVIDE (edata = .); + + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + __start___ex_table = .; + __ex_table : { *(__ex_table) } + __stop___ex_table = .; + + . = ALIGN(256); + __init_begin = .; + .text.init : { *(.text.init) } + .data.init : { *(.data.init) } + . = ALIGN(256); + __init_end = .; + + __bss_start = .; + .bss : + { + *(.sbss) *(.scommon) + *(.dynbss) + *(.bss) + *(COMMON) + } + _end = . ; + PROVIDE (end = .); +} |