diff options
Diffstat (limited to 'board')
-rw-r--r-- | board/sbc405/Kconfig | 9 | ||||
-rw-r--r-- | board/sbc405/MAINTAINERS | 6 | ||||
-rw-r--r-- | board/sbc405/Makefile | 8 | ||||
-rw-r--r-- | board/sbc405/sbc405.c | 91 | ||||
-rw-r--r-- | board/sbc405/strataflash.c | 774 |
5 files changed, 0 insertions, 888 deletions
diff --git a/board/sbc405/Kconfig b/board/sbc405/Kconfig deleted file mode 100644 index 4e7e843..0000000 --- a/board/sbc405/Kconfig +++ /dev/null @@ -1,9 +0,0 @@ -if TARGET_SBC405 - -config SYS_BOARD - default "sbc405" - -config SYS_CONFIG_NAME - default "sbc405" - -endif diff --git a/board/sbc405/MAINTAINERS b/board/sbc405/MAINTAINERS deleted file mode 100644 index 2abad25..0000000 --- a/board/sbc405/MAINTAINERS +++ /dev/null @@ -1,6 +0,0 @@ -SBC405 BOARD -#M: - -S: Maintained -F: board/sbc405/ -F: include/configs/sbc405.h -F: configs/sbc405_defconfig diff --git a/board/sbc405/Makefile b/board/sbc405/Makefile deleted file mode 100644 index 3f2b0e2..0000000 --- a/board/sbc405/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# -# (C) Copyright 2000-2006 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# SPDX-License-Identifier: GPL-2.0+ -# - -obj-y = sbc405.o strataflash.o diff --git a/board/sbc405/sbc405.c b/board/sbc405/sbc405.c deleted file mode 100644 index cafc844..0000000 --- a/board/sbc405/sbc405.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * (C) Copyright 2001 - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#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(UIC0SR, 0xFFFFFFFF); /* clear all ints */ - mtdcr(UIC0ER, 0x00000000); /* disable all ints */ - mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/ - mtdcr(UIC0PR, 0xFFFFFF81); /* set int polarities */ - mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */ - mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority*/ - mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */ - - /* - * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us - */ - mtebc (EBC0_CFG, 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) -{ - char str[64]; - int i = getenv_f("serial#", str, sizeof(str)); - - puts ("Board: "); - - if (i == -1) { - puts ("### No HW ID - assuming sbc405"); - } else { - puts(str); - } - - putc ('\n'); - - return 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 deleted file mode 100644 index 7ddc97c..0000000 --- a/board/sbc405/strataflash.c +++ /dev/null @@ -1,774 +0,0 @@ -/* - * (C) Copyright 2002 - * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#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[CONFIG_SYS_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 CONFIG_SYS_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 = CONFIG_SYS_FLASH_BASE; - size = 0; - - /* Init: no FLASHes known */ - for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { - flash_info[i].flash_id = FLASH_UNKNOWN; - size += flash_info[i].size = flash_get_size(address, i); - address += CONFIG_SYS_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 (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) - for(i=0; flash_info[0].start[i] < CONFIG_SYS_MONITOR_BASE+CONFIG_SYS_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, - - CONFIG_SYS_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 CONFIG_SYS_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 CONFIG_SYS_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 /* CONFIG_SYS_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 cptr; - int flag; - - 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 CONFIG_SYS_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 /* CONFIG_SYS_USE_FLASH_BUFFER_WRITE */ |