diff options
Diffstat (limited to 'board/flagadm/flash.c')
| -rw-r--r-- | board/flagadm/flash.c | 687 |
1 files changed, 0 insertions, 687 deletions
diff --git a/board/flagadm/flash.c b/board/flagadm/flash.c deleted file mode 100644 index 46a2c9a266..0000000000 --- a/board/flagadm/flash.c +++ /dev/null @@ -1,687 +0,0 @@ -/* - * (C) Copyright 2001 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <mpc8xx.h> -#include <flash.h> - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -/*----------------------------------------------------------------------- - * Functions - */ -ulong flash_recognize (vu_long *base); -int write_word (flash_info_t *info, ulong dest, ulong data); -void flash_get_geometry (vu_long *base, flash_info_t *info); -void flash_unprotect(flash_info_t *info); -int _flash_real_protect(flash_info_t *info, long idx, int on); - - -unsigned long flash_init (void) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - int i; - int rec; - - for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { - flash_info[i].flash_id = FLASH_UNKNOWN; - } - - *((vu_short*)CONFIG_SYS_FLASH_BASE) = 0xffff; - - flash_get_geometry ((vu_long*)CONFIG_SYS_FLASH_BASE, &flash_info[0]); - - /* Remap FLASH according to real size */ - memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-flash_info[0].size & 0xFFFF8000); - memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | - (memctl->memc_br0 & ~(BR_BA_MSK)); - - rec = flash_recognize((vu_long*)CONFIG_SYS_FLASH_BASE); - - if (rec == FLASH_UNKNOWN) { - printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", - flash_info[0].size, flash_info[0].size<<20); - } - -#if CONFIG_SYS_FLASH_PROTECTION - /*Unprotect all the flash memory*/ - flash_unprotect(&flash_info[0]); -#endif - - *((vu_short*)CONFIG_SYS_FLASH_BASE) = 0xffff; - - return (flash_info[0].size); - -#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE - /* monitor protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CONFIG_SYS_MONITOR_BASE, - CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, - &flash_info[0]); -#endif - -#ifdef CONFIG_ENV_IS_IN_FLASH - /* ENV protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CONFIG_ENV_OFFSET, - CONFIG_ENV_OFFSET+CONFIG_ENV_SIZE-1, - &flash_info[0]); -#endif - return (flash_info[0].size); -} - - -int flash_get_protect_status(flash_info_t * info, long idx) -{ - vu_short * base; - ushort res; - -#ifdef DEBUG - printf("\n Attempting to set protection info with %d sectors\n", info->sector_count); -#endif - - - base = (vu_short*)info->start[idx]; - - *(base) = 0xffff; - - *(base + 0x55) = 0x0098; - res = base[0x2]; - - *(base) = 0xffff; - - if(res != 0) - res = 1; - else - res = 0; - - return res; -} - -void flash_get_geometry (vu_long *base, flash_info_t *info) -{ - int i,j; - ulong ner = 0; - vu_short * sb = (vu_short*)base; - ulong offset = (ulong)base; - - /* Read Device geometry */ - - *sb = 0xffff; - - *sb = 0x0090; - - info->flash_id = ((ulong)base[0x0]); -#ifdef DEBUG - printf("Id is %x\n", (uint)(ulong)info->flash_id); -#endif - - *sb = 0xffff; - - *(sb+0x55) = 0x0098; - - info->size = 1 << (sb[0x27]); /* Read flash size */ - -#ifdef DEBUG - printf("Size is %x\n", (uint)(ulong)info->size); -#endif - - *sb = 0xffff; - - *(sb + 0x55) = 0x0098; - ner = sb[0x2c] ; /*Number of erase regions*/ - -#ifdef DEBUG - printf("Number of erase regions %x\n", (uint)ner); -#endif - - info->sector_count = 0; - - for(i = 0; i < ner; i++) - { - uint s; - uint count; - uint t1,t2,t3,t4; - - *sb = 0xffff; - - *(sb + 0x55) = 0x0098; - - t1 = sb[0x2d + i*4]; - t2 = sb[0x2e + i*4]; - t3 = sb[0x2f + i*4]; - t4 = sb[0x30 + i*4]; - - count = ((t1 & 0x00ff) | (((t2 & 0x00ff) << 8) & 0xff00) )+ 1; /*sector count*/ - s = ((t3 & 0x00ff) | (((t4 & 0x00ff) << 8) & 0xff00)) * 256;; /*Sector size*/ - -#ifdef DEBUG - printf("count and size %x, %x\n", count, s); - printf("sector count for erase region %d is %d\n", i, count); -#endif - for(j = 0; j < count; j++) - { -#ifdef DEBUG - printf("%x, ", (uint)offset); -#endif - info->start[ info->sector_count + j] = offset; - offset += s; - } - info->sector_count += count; - } - - if ((offset - (ulong)base) != info->size) - printf("WARNING reported size %x does not match to calculted size %x.\n" - , (uint)info->size, (uint)(offset - (ulong)base) ); - - /* Next check if there are any sectors protected.*/ - - for(i = 0; i < info->sector_count; i++) - info->protect[i] = flash_get_protect_status(info, i); - - *sb = 0xffff; -} - -/*----------------------------------------------------------------------- - */ -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 INTEL_MANUFACT & FLASH_VENDMASK: - printf ("Intel "); - break; - default: - printf ("Unknown Vendor "); - break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case INTEL_ID_28F320C3B & FLASH_TYPEMASK: - printf ("28F320RC3(4 MB)\n"); - break; - case INTEL_ID_28F320J3A: - printf("28F320J3A (4 MB)\n"); - break; - default: - printf ("Unknown Chip Type\n"); - break; - } - - 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 % 4) == 0) - printf ("\n "); - printf (" %02d %08lX%s", - i, info->start[i], - info->protect[i]!=0 ? " (RO)" : " " - ); - } - printf ("\n"); - return ; -} - -ulong flash_recognize (vu_long *base) -{ - ulong id; - ulong res = FLASH_UNKNOWN; - vu_short * sb = (vu_short*)base; - - *sb = 0xffff; - - *sb = 0x0090; - id = base[0]; - - switch (id & 0x00FF0000) - { - case (MT_MANUFACT & 0x00FF0000): /* MT or => Intel */ - case (INTEL_ALT_MANU & 0x00FF0000): - res = FLASH_MAN_INTEL; - break; - default: - res = FLASH_UNKNOWN; - } - - *sb = 0xffff; - - return res; -} - -/*-----------------------------------------------------------------------*/ -#define INTEL_FLASH_STATUS_BLS 0x02 -#define INTEL_FLASH_STATUS_PSS 0x04 -#define INTEL_FLASH_STATUS_VPPS 0x08 -#define INTEL_FLASH_STATUS_PS 0x10 -#define INTEL_FLASH_STATUS_ES 0x20 -#define INTEL_FLASH_STATUS_ESS 0x40 -#define INTEL_FLASH_STATUS_WSMS 0x80 - -int flash_decode_status_bits(char status) -{ - int err = 0; - - if(!(status & INTEL_FLASH_STATUS_WSMS)) { - printf("Busy\n"); - err = -1; - } - - if(status & INTEL_FLASH_STATUS_ESS) { - printf("Erase suspended\n"); - err = -1; - } - - if(status & INTEL_FLASH_STATUS_ES) { - printf("Error in block erase\n"); - err = -1; - } - - if(status & INTEL_FLASH_STATUS_PS) { - printf("Error in programming\n"); - err = -1; - } - - if(status & INTEL_FLASH_STATUS_VPPS) { - printf("Vpp low, operation aborted\n"); - err = -1; - } - - if(status & INTEL_FLASH_STATUS_PSS) { - printf("Program is suspended\n"); - err = -1; - } - - if(status & INTEL_FLASH_STATUS_BLS) { - printf("Attempting to program/erase a locked sector\n"); - err = -1; - } - - if((status & INTEL_FLASH_STATUS_PS) && - (status & INTEL_FLASH_STATUS_ES) && - (status & INTEL_FLASH_STATUS_ESS)) { - printf("A command sequence error\n"); - return -1; - } - - return err; -} - -/*----------------------------------------------------------------------- - */ - -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - vu_short *addr; - int flag, prot, sect; - ulong start, now; - int rcode = 0; - - 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_VENDMASK) != (INTEL_MANUFACT & FLASH_VENDMASK)) { - printf ("Can't erase unknown flash type %08lx - aborted\n", - info->flash_id); - 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); - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last; sect++) { - char tmp; - - if (info->protect[sect] == 0) { /* not protected */ - addr = (vu_short *)(info->start[sect]); - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - /* Single Block Erase Command */ - *addr = 0x0020; - /* Confirm */ - *addr = 0x00D0; - /* Resume Command, as per errata update */ - *addr = 0x00D0; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - *addr = 0x70; /*Read status register command*/ - tmp = (short)*addr & 0x00FF; /* Read the status */ - while (!(tmp & INTEL_FLASH_STATUS_WSMS)) { - if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - *addr = 0x0050; /* Reset the status register */ - *addr = 0xffff; - printf ("Timeout\n"); - return 1; - } - /* show that we're waiting */ - if ((now - start) > 1000) { /* every second */ - putc ('.'); - } - udelay(100000); /* 100 ms */ - *addr = 0x0070; /*Read status register command*/ - tmp = (short)*addr & 0x00FF; /* Read status */ - start = get_timer(0); - } - if( tmp & INTEL_FLASH_STATUS_ES ) - flash_decode_status_bits(tmp); - - *addr = 0x0050; /* Reset the status register */ - *addr = 0xffff; /* Reset to read mode */ - } - } - - - printf (" done\n"); - return rcode; -} - -void flash_unprotect (flash_info_t *info) -{ - /*We can only unprotect the whole flash at once*/ - /*Therefore we must prevent the _flash_real_protect()*/ - /*from re-protecting sectors, that ware protected before */ - /*we called flash_real_protect();*/ - - int i; - - for(i = 0; i < info->sector_count; i++) - info->protect[i] = 0; - -#ifdef CONFIG_SYS_FLASH_PROTECTION - _flash_real_protect(info, 0, 0); -#endif -} - -/*----------------------------------------------------------------------- - * 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 cp, wp, data; - int i, l, rc; - - wp = (addr & ~3); /* get lower word aligned address */ - - /* - * handle unaligned start bytes - */ - if ((l = addr - wp) != 0) { - data = 0; - for (i=0, cp=wp; i<l; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - for (; i<4 && cnt>0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - for (; cnt==0 && i<4; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); - } - wp += 4; - } - - /* - * handle word aligned part - */ - while (cnt >= 4) { - data = 0; - for (i=0; i<4; ++i) { - data = (data << 8) | *src++; - } - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); - } - wp += 4; - cnt -= 4; - } - - if (cnt == 0) { - return (0); - } - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { - data = (data << 8) | *src++; - --cnt; - } - for (; i<4; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - return (write_word(info, wp, data)); -} - -/*----------------------------------------------------------------------- - * Write a word to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -int write_word (flash_info_t *info, ulong dest, ulong da) -{ - vu_short *addr = (vu_short *)dest; - ulong start; - char csr; - int flag; - int i; - union { - u32 data32; - u16 data16[2]; - } data; - - data.data32 = da; - - /* Check if Flash is (sufficiently) erased */ - if (((*addr & data.data16[0]) != data.data16[0]) || - ((*(addr+1) & data.data16[1]) != data.data16[1])) { - return (2); - } - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - for(i = 0; i < 2; i++) - { - /* Write Command */ - *addr = 0x0010; - - /* Write Data */ - *addr = data.data16[i]; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* data polling for D7 */ - start = get_timer (0); - flag = 0; - *addr = 0x0070; /*Read statusregister command */ - while (((csr = *addr) & INTEL_FLASH_STATUS_WSMS)!=INTEL_FLASH_STATUS_WSMS) { - if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - flag = 1; - break; - } - *addr = 0x0070; /*Read statusregister command */ - } - if (csr & INTEL_FLASH_STATUS_PSS) { - printf ("CSR indicates write error (%0x) at %08lx\n", - csr, (ulong)addr); - flag = 1; - } - - /* Clear Status Registers Command */ - *addr = 0x0050; - /* Reset to read array mode */ - *addr = 0xffff; - addr++; - } - - return (flag); -} - -int flash_real_protect(flash_info_t *info, long offset, int prot) -{ - int i, idx; - - for(idx = 0; idx < info->sector_count; idx++) - if(info->start[idx] == offset) - break; - - if(idx==info->sector_count) - return -1; - - if(prot == 0) { - /* Unprotect one sector, which means unprotect all flash - * and reprotect the other protected sectors. - */ - _flash_real_protect(info, 0, 0); /* Unprotects the whole flash*/ - info->protect[idx] = 0; - - for(i = 0; i < info->sector_count; i++) - if(info->protect[i]) - _flash_real_protect(info, i, 1); - } - else { - /* We can protect individual sectors */ - _flash_real_protect(info, idx, 1); - } - - for( i = 0; i < info->sector_count; i++) - info->protect[i] = flash_get_protect_status(info, i); - - return 0; -} - -int _flash_real_protect(flash_info_t *info, long idx, int prot) -{ - vu_short *addr; - int flag; - ushort cmd; - ushort tmp; - ulong now, start; - - if ((info->flash_id & FLASH_VENDMASK) != (INTEL_MANUFACT & FLASH_VENDMASK)) { - printf ("Can't change protection for unknown flash type %08lx - aborted\n", - info->flash_id); - return -1; - } - - if(prot == 0) { - /*Unlock the sector*/ - cmd = 0x00D0; - } - else { - /*Lock the sector*/ - cmd = 0x0001; - } - - addr = (vu_short *)(info->start[idx]); - - /* If chip is busy, wait for it */ - start = get_timer(0); - *addr = 0x0070; /*Read status register command*/ - tmp = ((ushort)(*addr))&0x00ff; /*Read the status*/ - while(!(tmp & INTEL_FLASH_STATUS_WSMS)) { - /*Write State Machine Busy*/ - /*Wait untill done or timeout.*/ - if ((now=get_timer(start)) > CONFIG_SYS_FLASH_WRITE_TOUT) { - *addr = 0x0050; /* Reset the status register */ - *addr = 0xffff; /* Reset the chip */ - printf ("TTimeout\n"); - return 1; - } - *addr = 0x0070; - tmp = ((ushort)(*addr))&0x00ff; /*Read the status*/ - start = get_timer(0); - } - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - /* Unlock block*/ - *addr = 0x0060; - - *addr = cmd; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - start = get_timer(0); - *addr = 0x0070; /*Read status register command*/ - tmp = ((ushort)(*addr)) & 0x00FF; /* Read the status */ - while (!(tmp & INTEL_FLASH_STATUS_WSMS)) { - /* Write State Machine Busy */ - if ((now=get_timer(start)) > CONFIG_SYS_FLASH_WRITE_TOUT) { - *addr = 0x0050; /* Reset the status register */ - *addr = 0xffff; - printf ("Timeout\n"); - return 1; - } - /* show that we're waiting */ - if ((now - start) > 1000) { /* every second */ - putc ('.'); - } - udelay(100000); /* 100 ms */ - *addr = 0x70; /*Read status register command*/ - tmp = (short)*addr & 0x00FF; /* Read status */ - start = get_timer(0); - } - if( tmp & INTEL_FLASH_STATUS_PS ) - flash_decode_status_bits(tmp); - - *addr =0x0050; /*Clear status register*/ - - /* reset to read mode */ - *addr = 0xffff; - - return 0; -} |
