diff options
Diffstat (limited to 'board/ep8260/flash.c')
| -rw-r--r-- | board/ep8260/flash.c | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/board/ep8260/flash.c b/board/ep8260/flash.c deleted file mode 100644 index 44f63ee..0000000 --- a/board/ep8260/flash.c +++ /dev/null @@ -1,395 +0,0 @@ -/* - * (C) Copyright 2001, 2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2002 - * Frank Panno <fpanno@delphintech.com>, Delphin Technology AG - * - * Flash Routines for AMD device AM29DL323DB on the EP8260 board. - * - * This file is based on board/tqm8260/flash.c. - *-------------------------------------------------------------------- - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <mpc8xx.h> - -#define V_ULONG(a) (*(volatile unsigned long *)( a )) -#define V_BYTE(a) (*(volatile unsigned char *)( a )) - - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - - -/*----------------------------------------------------------------------- - */ -void flash_reset(void) -{ - if( flash_info[0].flash_id != FLASH_UNKNOWN ) { - V_ULONG( flash_info[0].start[0] ) = 0x00F000F0; - V_ULONG( flash_info[0].start[0] + 4 ) = 0x00F000F0; - } -} - -/*----------------------------------------------------------------------- - */ -ulong flash_get_size( ulong baseaddr, flash_info_t *info ) -{ - short i; - unsigned long flashtest_h, flashtest_l; - - /* Write auto select command sequence and test FLASH answer */ - V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00AA00AA; - V_ULONG(baseaddr + ((ulong)0x02AA << 3)) = 0x00550055; - V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00900090; - V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00AA00AA; - V_ULONG(baseaddr + 4 + ((ulong)0x02AA << 3)) = 0x00550055; - V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00900090; - - flashtest_h = V_ULONG(baseaddr); /* manufacturer ID */ - flashtest_l = V_ULONG(baseaddr + 4); - - if ((int)flashtest_h == AMD_MANUFACT) { - info->flash_id = FLASH_MAN_AMD; - } else { - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - return (0); /* no or unknown flash */ - } - - flashtest_h = V_ULONG(baseaddr + 8); /* device ID */ - flashtest_l = V_ULONG(baseaddr + 12); - if (flashtest_h != flashtest_l) { - info->flash_id = FLASH_UNKNOWN; - return(0); - } - - switch((int)flashtest_h) { - case AMD_ID_DL323B: - info->flash_id += FLASH_AMDL323B; - info->sector_count = 71; - info->size = 0x01000000; /* 4 * 4 MB = 16 MB */ - break; - case AMD_ID_LV640U: /* AMDLV640 and AMDLV641 have same ID */ - info->flash_id += FLASH_AMLV640U; - info->sector_count = 128; - info->size = 0x02000000; /* 4 * 8 MB = 32 MB */ - break; - default: - info->flash_id = FLASH_UNKNOWN; - return(0); /* no or unknown flash */ - } - - if(flashtest_h == AMD_ID_LV640U) { - /* set up sector start adress table (uniform sector type) */ - for (i = 0; i < info->sector_count; i++) - info->start[i] = baseaddr + (i * 0x00040000); - } else { - /* set up sector start adress table (bottom sector type) */ - for (i = 0; i < 8; i++) { - info->start[i] = baseaddr + (i * 0x00008000); - } - for (i = 8; i < info->sector_count; i++) { - info->start[i] = baseaddr + (i * 0x00040000) - 0x001C0000; - } - } - /* check for protected sectors */ - for (i = 0; i < info->sector_count; i++) { - /* read sector protection at sector address, (A7 .. A0) = 0x02 */ - if ((V_ULONG( info->start[i] + 16 ) & 0x00010001) || - (V_ULONG( info->start[i] + 20 ) & 0x00010001)) { - info->protect[i] = 1; /* D0 = 1 if protected */ - } else { - info->protect[i] = 0; - } - } - - flash_reset(); - return(info->size); -} - -/*----------------------------------------------------------------------- - */ -unsigned long flash_init (void) -{ - unsigned long size_b0 = 0; - int i; - - /* Init: no FLASHes known */ - for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { - flash_info[i].flash_id = FLASH_UNKNOWN; - } - - /* Static FLASH Bank configuration here (only one bank) */ - - size_b0 = flash_get_size(CONFIG_SYS_FLASH0_BASE, &flash_info[0]); - if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) { - printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", - size_b0, size_b0>>20); - } - - /* - * protect monitor and environment sectors - */ - -#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE - flash_protect(FLAG_PROTECT_SET, - CONFIG_SYS_MONITOR_BASE, - CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, - &flash_info[0]); -#endif - -#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR) -# ifndef CONFIG_ENV_SIZE -# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE -# endif - flash_protect(FLAG_PROTECT_SET, - CONFIG_ENV_ADDR, - CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, - &flash_info[0]); -#endif - - return (size_b0); -} - -/*----------------------------------------------------------------------- - */ -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 >> 16) & 0xff) { - case FLASH_MAN_AMD: printf ("AMD "); break; - default: printf ("Unknown Vendor "); break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_AMDL323B: printf ("29DL323B (32 M, bottom sector)\n"); - break; - case FLASH_AMLV640U: printf ("29LV640U (64 M, uniform sector)\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 % 5) == 0) - printf ("\n "); - printf (" %08lX%s", - info->start[i], - info->protect[i] ? " (RO)" : " " - ); - } - printf ("\n"); - return; -} - -/*----------------------------------------------------------------------- - */ -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - int flag, prot, sect, l_sect; - ulong start, now, last; - - 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; - } - - 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"); - } - - l_sect = -1; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA; - V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055; - V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00800080; - V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA; - V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055; - V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA; - V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055; - V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00800080; - V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA; - V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055; - udelay (1000); - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last; sect++) { - if (info->protect[sect] == 0) { /* not protected */ - V_ULONG( info->start[sect] ) = 0x00300030; - V_ULONG( info->start[sect] + 4 ) = 0x00300030; - l_sect = sect; - } - } - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* wait at least 80us - let's wait 1 ms */ - udelay (1000); - - /* - * We wait for the last triggered sector - */ - if (l_sect < 0) - goto DONE; - - start = get_timer (0); - last = start; - while ((V_ULONG( info->start[l_sect] ) & 0x00800080) != 0x00800080 || - (V_ULONG( info->start[l_sect] + 4 ) & 0x00800080) != 0x00800080) - { - if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - return 1; - } - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - serial_putc ('.'); - last = now; - } - } - - DONE: - /* reset to read mode */ - flash_reset (); - - printf (" done\n"); - return 0; -} - -static int write_dword (flash_info_t *, ulong, unsigned char *); - -/*----------------------------------------------------------------------- - * 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 dp; - static unsigned char bb[8]; - int i, l, rc, cc = cnt; - - dp = (addr & ~7); /* get lower dword aligned address */ - - /* - * handle unaligned start bytes - */ - if ((l = addr - dp) != 0) { - for (i = 0; i < 8; i++) - bb[i] = (i < l || (i-l) >= cc) ? V_BYTE(dp+i) : *src++; - if ((rc = write_dword(info, dp, bb)) != 0) - { - return (rc); - } - dp += 8; - cc -= 8 - l; - } - - /* - * handle word aligned part - */ - while (cc >= 8) { - if ((rc = write_dword(info, dp, src)) != 0) { - return (rc); - } - dp += 8; - src += 8; - cc -= 8; - } - - if (cc <= 0) { - return (0); - } - - /* - * handle unaligned tail bytes - */ - for (i = 0; i < 8; i++) { - bb[i] = (i < cc) ? *src++ : V_BYTE(dp+i); - } - return (write_dword(info, dp, bb)); -} - -/*----------------------------------------------------------------------- - * Write a dword to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_dword (flash_info_t *info, ulong dest, unsigned char * pdata) -{ - ulong start; - ulong cl = 0, ch =0; - int flag, i; - - for (ch=0, i=0; i < 4; i++) - ch = (ch << 8) + *pdata++; /* high word */ - for (cl=0, i=0; i < 4; i++) - cl = (cl << 8) + *pdata++; /* low word */ - - /* Check if Flash is (sufficiently) erased */ - if ((*((vu_long *)dest) & ch) != ch - ||(*((vu_long *)(dest + 4)) & cl) != cl) - { - return (2); - } - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA; - V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055; - V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00A000A0; - V_ULONG( dest ) = ch; - V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA; - V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055; - V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00A000A0; - V_ULONG( dest + 4 ) = cl; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* data polling for D7 */ - start = get_timer (0); - while (((V_ULONG( dest ) & 0x00800080) != (ch & 0x00800080)) || - ((V_ULONG( dest + 4 ) & 0x00800080) != (cl & 0x00800080))) { - if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - return (1); - } - } - return (0); -} |