diff options
Diffstat (limited to 'board/siemens/pcu_e/flash.c')
| -rw-r--r-- | board/siemens/pcu_e/flash.c | 700 |
1 files changed, 0 insertions, 700 deletions
diff --git a/board/siemens/pcu_e/flash.c b/board/siemens/pcu_e/flash.c deleted file mode 100644 index 3ce7bb3..0000000 --- a/board/siemens/pcu_e/flash.c +++ /dev/null @@ -1,700 +0,0 @@ -/* - * (C) Copyright 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 <common.h> -#include <mpc8xx.h> - -#if defined(CONFIG_ENV_IS_IN_FLASH) -# ifndef CONFIG_ENV_ADDR -# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) -# endif -# ifndef CONFIG_ENV_SIZE -# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE -# endif -# ifndef CONFIG_ENV_SECT_SIZE -# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE -# endif -#endif - -/*---------------------------------------------------------------------*/ -#undef DEBUG_FLASH - -#ifdef DEBUG_FLASH -#define DEBUGF(fmt,args...) printf(fmt ,##args) -#else -#define DEBUGF(fmt,args...) -#endif -/*---------------------------------------------------------------------*/ - - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -/*----------------------------------------------------------------------- - * Functions - */ -static ulong flash_get_size (vu_long *addr, flash_info_t *info); -static int write_data (flash_info_t *info, ulong dest, ulong data); -static void flash_get_offsets (ulong base, flash_info_t *info); - -/*----------------------------------------------------------------------- - * - * The PCU E uses an address map where flash banks are aligned top - * down, so that the "first" flash bank ends at top of memory, and - * the monitor entry point is at address (0xFFF00100). The second - * flash bank is mapped immediately below bank 0. - * - * This is NOT in conformance to the "official" memory map! - * - */ - -#define PCU_MONITOR_BASE ( (flash_info[0].start[0] + flash_info[0].size - 1) \ - - (0xFFFFFFFF - CONFIG_SYS_MONITOR_BASE) ) - -/*----------------------------------------------------------------------- - */ - -unsigned long flash_init (void) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - unsigned long base, size_b0, size_b1; - 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 - FIXME XXX */ - - /* - * Warning: - * - * Since the PCU E memory map assigns flash banks top down, - * we swap the numbering later if both banks are equipped, - * so they look like a contiguous area of memory. - */ - DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM); - - size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); - - if (flash_info[0].flash_id == FLASH_UNKNOWN) { - printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", - size_b0, size_b0<<20); - } - - DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE6_PRELIM); - size_b1 = flash_get_size((vu_long *)FLASH_BASE6_PRELIM, &flash_info[1]); - - DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n", size_b0, size_b1); - - if (size_b1 > size_b0) { - printf ("## ERROR: " - "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n", - size_b1, size_b1<<20, - size_b0, size_b0<<20 - ); - flash_info[0].flash_id = FLASH_UNKNOWN; - flash_info[1].flash_id = FLASH_UNKNOWN; - flash_info[0].sector_count = -1; - flash_info[1].sector_count = -1; - flash_info[0].size = 0; - flash_info[1].size = 0; - return (0); - } - - DEBUGF ("## Before remap: " - "BR0: 0x%08x OR0: 0x%08x " - "BR6: 0x%08x OR6: 0x%08x\n", - memctl->memc_br0, memctl->memc_or0, - memctl->memc_br6, memctl->memc_or6); - - /* Remap FLASH according to real size */ - base = 0 - size_b0; - memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); - memctl->memc_br0 = (base & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V; - - DEBUGF("## BR0: 0x%08x OR0: 0x%08x\n", - memctl->memc_br0, memctl->memc_or0); - - /* Re-do sizing to get full correct info */ - size_b0 = flash_get_size((vu_long *)base, &flash_info[0]); - base = 0 - size_b0; - - flash_info[0].size = size_b0; - - flash_get_offsets (base, &flash_info[0]); - - /* monitor protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - PCU_MONITOR_BASE, - PCU_MONITOR_BASE+monitor_flash_len-1, - &flash_info[0]); - -#ifdef CONFIG_ENV_IS_IN_FLASH - /* ENV protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CONFIG_ENV_ADDR, - CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, - &flash_info[0]); -#endif - - if (size_b1) { - flash_info_t tmp_info; - - memctl->memc_or6 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000); - memctl->memc_br6 = ((base - size_b1) & BR_BA_MSK) | - BR_PS_16 | BR_MS_GPCM | BR_V; - - DEBUGF("## New BR6: 0x%08x OR6: 0x%08x\n", - memctl->memc_br6, memctl->memc_or6); - - /* Re-do sizing to get full correct info */ - size_b1 = flash_get_size((vu_long *)(base - size_b1), - &flash_info[1]); - base -= size_b1; - - flash_get_offsets (base, &flash_info[1]); - - flash_info[1].size = size_b1; - -#ifdef CONFIG_ENV_IS_IN_FLASH - /* ENV protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CONFIG_ENV_ADDR, - CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, - &flash_info[1]); -#endif - /* - * Swap bank numbers so that addresses are in ascending order - */ - tmp_info = flash_info[0]; - flash_info[0] = flash_info[1]; - flash_info[1] = tmp_info; - } else { - memctl->memc_br1 = 0; /* invalidate bank */ - - flash_info[1].flash_id = FLASH_UNKNOWN; - flash_info[1].sector_count = -1; - } - - - DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1); - - return (size_b0 + size_b1); -} - -/*----------------------------------------------------------------------- - */ -static void flash_get_offsets (ulong base, flash_info_t *info) -{ - int i; - short n; - - if (info->flash_id == FLASH_UNKNOWN) { - return; - } - - if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD) { - return; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_AMDL322T: - case FLASH_AMDL323T: - case FLASH_AMDL324T: - /* set sector offsets for top boot block type */ - - base += info->size; - i = info->sector_count; - for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */ - base -= 8 << 10; - --i; - info->start[i] = base; - } - while (i > 0) { /* 64k regular sectors */ - base -= 64 << 10; - --i; - info->start[i] = base; - } - return; - case FLASH_AMDL322B: - case FLASH_AMDL323B: - case FLASH_AMDL324B: - /* set sector offsets for bottom boot block type */ - for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */ - info->start[i] = base; - base += 8 << 10; - } - while (base < info->size) { /* 64k regular sectors */ - info->start[i] = base; - base += 64 << 10; - ++i; - } - return; - case FLASH_AMDL640: - /* set sector offsets for dual boot block type */ - for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */ - info->start[i] = base; - base += 8 << 10; - } - n = info->sector_count - 8; - while (i < n) { /* 64k regular sectors */ - info->start[i] = base; - base += 64 << 10; - ++i; - } - while (i < info->sector_count) { /* 8 x 8k boot sectors */ - info->start[i] = base; - base += 8 << 10; - ++i; - } - return; - default: - return; - } - /* NOTREACHED */ -} - -/*----------------------------------------------------------------------- - */ -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 FLASH_MAN_AMD: printf ("AMD "); break; - case FLASH_MAN_FUJ: printf ("FUJITSU "); break; - default: printf ("Unknown Vendor "); break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_AMDL322B: printf ("AM29DL322B (32 Mbit, bottom boot sect)\n"); - break; - case FLASH_AMDL322T: printf ("AM29DL322T (32 Mbit, top boot sector)\n"); - break; - case FLASH_AMDL323B: printf ("AM29DL323B (32 Mbit, bottom boot sect)\n"); - break; - case FLASH_AMDL323T: printf ("AM29DL323T (32 Mbit, top boot sector)\n"); - break; - case FLASH_AMDL324B: printf ("AM29DL324B (32 Mbit, bottom boot sect)\n"); - break; - case FLASH_AMDL324T: printf ("AM29DL324T (32 Mbit, top boot sector)\n"); - break; - case FLASH_AMDL640: printf ("AM29DL640D (64 Mbit, dual boot sector)\n"); - break; - default: printf ("Unknown Chip Type 0x%lX\n", - info->flash_id); - 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; -} - -/*----------------------------------------------------------------------- - */ - - -/*----------------------------------------------------------------------- - */ - -/* - * The following code cannot be run from FLASH! - */ - -static ulong flash_get_size (vu_long *addr, flash_info_t *info) -{ - short i; - ushort value; - vu_short *saddr = (vu_short *)addr; - - /* Write auto select command: read Manufacturer ID */ - saddr[0x0555] = 0x00AA; - saddr[0x02AA] = 0x0055; - saddr[0x0555] = 0x0090; - - value = saddr[0]; - - DEBUGF("Manuf. ID @ 0x%08lx: 0x%04x\n", (ulong)addr, value); - - switch (value) { - case (AMD_MANUFACT & 0xFFFF): - info->flash_id = FLASH_MAN_AMD; - break; - case (FUJ_MANUFACT & 0xFFFF): - info->flash_id = FLASH_MAN_FUJ; - break; - default: - DEBUGF("Unknown Manufacturer ID\n"); - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - return (0); /* no or unknown flash */ - } - - value = saddr[1]; /* device ID */ - - DEBUGF("Device ID @ 0x%08lx: 0x%04x\n", (ulong)(&addr[1]), value); - - switch (value) { - - case (AMD_ID_DL322T & 0xFFFF): - info->flash_id += FLASH_AMDL322T; - info->sector_count = 71; - info->size = 0x00400000; - break; /* => 8 MB */ - - case (AMD_ID_DL322B & 0xFFFF): - info->flash_id += FLASH_AMDL322B; - info->sector_count = 71; - info->size = 0x00400000; - break; /* => 8 MB */ - - case (AMD_ID_DL323T & 0xFFFF): - info->flash_id += FLASH_AMDL323T; - info->sector_count = 71; - info->size = 0x00400000; - break; /* => 8 MB */ - - case (AMD_ID_DL323B & 0xFFFF): - info->flash_id += FLASH_AMDL323B; - info->sector_count = 71; - info->size = 0x00400000; - break; /* => 8 MB */ - - case (AMD_ID_DL324T & 0xFFFF): - info->flash_id += FLASH_AMDL324T; - info->sector_count = 71; - info->size = 0x00400000; - break; /* => 8 MB */ - - case (AMD_ID_DL324B & 0xFFFF): - info->flash_id += FLASH_AMDL324B; - info->sector_count = 71; - info->size = 0x00400000; - break; /* => 8 MB */ - case (AMD_ID_DL640 & 0xFFFF): - info->flash_id += FLASH_AMDL640; - info->sector_count = 142; - info->size = 0x00800000; - break; - default: - DEBUGF("Unknown Device ID\n"); - info->flash_id = FLASH_UNKNOWN; - return (0); /* => no or unknown flash */ - - } - - flash_get_offsets ((ulong)addr, info); - - /* check for protected sectors */ - for (i = 0; i < info->sector_count; i++) { -#if 0 - /* read sector protection at sector address, (A7 .. A0) = 0x02 */ - /* D0 = 1 if protected */ - saddr = (vu_short *)(info->start[i]); - info->protect[i] = saddr[2] & 1; -#else - info->protect[i] =0; -#endif - } - - if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { - printf ("** ERROR: sector count %d > max (%d) **\n", - info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); - info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; - } - - saddr = (vu_short *)info->start[0]; - *saddr = 0x00F0; /* restore read mode */ - - return (info->size); -} - - -/*----------------------------------------------------------------------- - */ - -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - vu_short *addr = (vu_short*)(info->start[0]); - 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; - } - - if ((info->flash_id == FLASH_UNKNOWN) || - (info->flash_id > FLASH_AMD_COMP)) { - 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"); - } - - l_sect = -1; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - addr[0x0555] = 0x00AA; - addr[0x02AA] = 0x0055; - addr[0x0555] = 0x0080; - addr[0x0555] = 0x00AA; - addr[0x02AA] = 0x0055; - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last; sect++) { - if (info->protect[sect] == 0) { /* not protected */ - addr = (vu_short*)(info->start[sect]); - addr[0] = 0x0030; - 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; - addr = (vu_short*)(info->start[l_sect]); - while ((addr[0] & 0x0080) != 0x0080) { - 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 */ - putc ('.'); - last = now; - } - } - -DONE: - /* reset to read mode */ - addr = (vu_short *)info->start[0]; - addr[0] = 0x00F0; /* reset bank */ - - printf (" done\n"); - return 0; -} - -/*----------------------------------------------------------------------- - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ - -#define FLASH_WIDTH 2 /* flash bus width in bytes */ - -int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) -{ - ulong cp, wp, data; - int i, l, rc; - - wp = (addr & ~(FLASH_WIDTH-1)); /* get lower FLASH_WIDTH 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<FLASH_WIDTH && cnt>0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - for (; cnt==0 && i<FLASH_WIDTH; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - if ((rc = write_data(info, wp, data)) != 0) { - return (rc); - } - wp += FLASH_WIDTH; - } - - /* - * handle FLASH_WIDTH aligned part - */ - while (cnt >= FLASH_WIDTH) { - data = 0; - for (i=0; i<FLASH_WIDTH; ++i) { - data = (data << 8) | *src++; - } - if ((rc = write_data(info, wp, data)) != 0) { - return (rc); - } - wp += FLASH_WIDTH; - cnt -= FLASH_WIDTH; - } - - if (cnt == 0) { - return (0); - } - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i=0, cp=wp; i<FLASH_WIDTH && cnt>0; ++i, ++cp) { - data = (data << 8) | *src++; - --cnt; - } - for (; i<FLASH_WIDTH; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - return (write_data(info, wp, data)); -} - -/*----------------------------------------------------------------------- - * Write a word to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_data (flash_info_t *info, ulong dest, ulong data) -{ - vu_short *addr = (vu_short*)(info->start[0]); - vu_short *sdest = (vu_short *)dest; - ushort sdata = (ushort)data; - ushort sval; - ulong start, passed; - int flag, rc; - - /* Check if Flash is (sufficiently) erased */ - if ((*sdest & sdata) != sdata) { - return (2); - } - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - addr[0x0555] = 0x00AA; - addr[0x02AA] = 0x0055; - addr[0x0555] = 0x00A0; - -#ifdef WORKAROUND_FOR_BROKEN_HARDWARE - /* work around the timeout bugs */ - udelay(20); -#endif - - *sdest = sdata; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - rc = 0; - /* data polling for D7 */ - start = get_timer (0); - - for (passed=0; passed < CONFIG_SYS_FLASH_WRITE_TOUT; passed=get_timer(start)) { - - sval = *sdest; - - if ((sval & 0x0080) == (sdata & 0x0080)) - break; - - if ((sval & 0x0020) == 0) /* DQ5: Timeout? */ - continue; - - sval = *sdest; - - if ((sval & 0x0080) != (sdata & 0x0080)) - rc = 1; - - break; - } - - if (rc) { - DEBUGF ("Program cycle failed @ addr 0x%08lX: val %04X data %04X\n", - dest, sval, sdata); - } - - if (passed >= CONFIG_SYS_FLASH_WRITE_TOUT) { - DEBUGF ("Timeout @ addr 0x%08lX: val %04X data %04X\n", - dest, sval, sdata); - rc = 1; - } - - /* reset to read mode */ - addr = (vu_short *)info->start[0]; - addr[0] = 0x00F0; /* reset bank */ - - return (rc); -} - -/*----------------------------------------------------------------------- - */ |