diff options
Diffstat (limited to 'board/lwmon/flash.c')
| -rw-r--r-- | board/lwmon/flash.c | 632 |
1 files changed, 0 insertions, 632 deletions
diff --git a/board/lwmon/flash.c b/board/lwmon/flash.c deleted file mode 100644 index cb60c418a1..0000000000 --- a/board/lwmon/flash.c +++ /dev/null @@ -1,632 +0,0 @@ -/* - * (C) Copyright 2001 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* #define DEBUG */ - -#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 - -/*---------------------------------------------------------------------*/ - -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); -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE -static int write_data_buf (flash_info_t * info, ulong dest, uchar * cp, int len); -#endif -static void flash_get_offsets (ulong base, flash_info_t *info); - -/*----------------------------------------------------------------------- - */ - -unsigned long flash_init (void) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - unsigned long 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 */ - - debug ("\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: " - "ID 0x%lx, Size = 0x%08lx = %ld MB\n", - flash_info[0].flash_id, - size_b0, size_b0<<20); - } - - debug ("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM); - - size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]); - - debug ("## 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); - } - - debug ("## Before remap: " - "BR0: 0x%08x OR0: 0x%08x " - "BR1: 0x%08x OR1: 0x%08x\n", - memctl->memc_br0, memctl->memc_or0, - memctl->memc_br1, memctl->memc_or1); - - /* Remap FLASH according to real size */ - memctl->memc_or0 = (-size_b0 & 0xFFFF8000) | CONFIG_SYS_OR_TIMING_FLASH | - OR_CSNT_SAM | OR_ACS_DIV1; - memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_PS_32 | BR_V; - - debug ("## 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 *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); - - flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); - - flash_info[0].size = size_b0; - -#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_ADDR, - CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, - &flash_info[0]); -#endif - - if (size_b1) { - memctl->memc_or1 = (-size_b1 & 0xFFFF8000) | CONFIG_SYS_OR_TIMING_FLASH | - OR_CSNT_SAM | OR_ACS_DIV1; - memctl->memc_br1 = ((CONFIG_SYS_FLASH_BASE + size_b0) & BR_BA_MSK) | - BR_PS_32 | BR_V; - - debug ("## BR1: 0x%08x OR1: 0x%08x\n", - memctl->memc_br1, memctl->memc_or1); - - /* Re-do sizing to get full correct info */ - size_b1 = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE + size_b0), - &flash_info[1]); - - flash_info[1].size = size_b1; - - flash_get_offsets (CONFIG_SYS_FLASH_BASE + size_b0, &flash_info[1]); - -#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[1]); -#endif - -#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 - } else { - memctl->memc_br1 = 0; /* invalidate bank */ - memctl->memc_or1 = 0; /* invalidate bank */ - - debug ("## DISABLE BR1: 0x%08x OR1: 0x%08x\n", - memctl->memc_br1, memctl->memc_or1); - - flash_info[1].flash_id = FLASH_UNKNOWN; - flash_info[1].sector_count = -1; - flash_info[1].size = 0; - } - - debug ("## 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; - - if (info->flash_id == FLASH_UNKNOWN) { - return; - } - - switch (info->flash_id & FLASH_VENDMASK) { - case FLASH_MAN_INTEL: - for (i = 0; i < info->sector_count; i++) { - info->start[i] = base; - base += 0x00020000 * 2; /* 128k * 2 chips per bank */ - } - return; - - default: - printf ("Don't know sector ofsets for flash type 0x%lx\n", - info->flash_id); - return; - } -} - -/*----------------------------------------------------------------------- - */ -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; - case FLASH_MAN_SST: printf ("SST "); break; - case FLASH_MAN_STM: printf ("STM "); break; - case FLASH_MAN_INTEL: printf ("Intel "); break; - case FLASH_MAN_MT: printf ("MT "); break; - default: printf ("Unknown Vendor "); break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F320J3A: printf ("28F320J3A (32Mbit = 128K x 32)\n"); - break; - case FLASH_28F640J3A: printf ("28F640J3A (64Mbit = 128K x 64)\n"); - break; - case FLASH_28F128J3A: printf ("28F128J3A (128Mbit = 128K x 128)\n"); - break; - default: printf ("Unknown Chip Type\n"); - break; - } - - if (info->size >= (1 << 20)) { - i = 20; - } else { - i = 10; - } - printf (" Size: %ld %cB in %d Sectors\n", - info->size >> i, - (i == 20) ? 'M' : 'k', - 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) -{ - ulong value; - - /* Read Manufacturer ID */ - addr[0] = 0x00900090; - value = addr[0]; - - debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value); - - switch (value) { - case AMD_MANUFACT: - info->flash_id = FLASH_MAN_AMD; - break; - case FUJ_MANUFACT: - info->flash_id = FLASH_MAN_FUJ; - break; - case SST_MANUFACT: - info->flash_id = FLASH_MAN_SST; - break; - case STM_MANUFACT: - info->flash_id = FLASH_MAN_STM; - break; - case INTEL_MANUFACT: - info->flash_id = FLASH_MAN_INTEL; - break; - default: - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - addr[0] = 0x00FF00FF; /* restore read mode */ - return (0); /* no or unknown flash */ - } - - value = addr[1]; /* device ID */ - - debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value); - - switch (value) { - case INTEL_ID_28F320J3A: - info->flash_id += FLASH_28F320J3A; - info->sector_count = 32; - info->size = 0x00400000 * 2; - break; /* => 8 MB */ - - case INTEL_ID_28F640J3A: - info->flash_id += FLASH_28F640J3A; - info->sector_count = 64; - info->size = 0x00800000 * 2; - break; /* => 16 MB */ - - case INTEL_ID_28F128J3A: - info->flash_id += FLASH_28F128J3A; - info->sector_count = 128; - info->size = 0x01000000 * 2; - break; /* => 32 MB */ - - default: - info->flash_id = FLASH_UNKNOWN; - addr[0] = 0x00FF00FF; /* restore read mode */ - return (0); /* => no or unknown flash */ - - } - - 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; - } - - addr[0] = 0x00FF00FF; /* restore read mode */ - - return (info->size); -} - - -/*----------------------------------------------------------------------- - */ - -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - int flag, prot, sect; - ulong start, now, last; - - debug ("flash_erase: first: %d last: %d\n", s_first, s_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_VENDMASK) != FLASH_MAN_INTEL) { - printf ("Can erase only Intel flash types - aborted\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"); - } - - start = get_timer (0); - last = start; - /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last; sect++) { - if (info->protect[sect] == 0) { /* not protected */ - vu_long *addr = (vu_long *)(info->start[sect]); - unsigned long status; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - *addr = 0x00600060; /* clear lock bit setup */ - *addr = 0x00D000D0; /* clear lock bit confirm */ - - udelay (1000); - /* This takes awfully long - up to 50 ms and more */ - while (((status = *addr) & 0x00800080) != 0x00800080) { - if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - *addr = 0x00FF00FF; /* reset to read mode */ - return 1; - } - - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - putc ('.'); - last = now; - } - udelay (1000); /* to trigger the watchdog */ - } - - *addr = 0x00500050; /* clear status register */ - *addr = 0x00200020; /* erase setup */ - *addr = 0x00D000D0; /* erase confirm */ - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* wait at least 80us - let's wait 1 ms */ - udelay (1000); - - while (((status = *addr) & 0x00800080) != 0x00800080) { - if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - *addr = 0x00B000B0; /* suspend erase */ - *addr = 0x00FF00FF; /* reset to read mode */ - return 1; - } - - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - putc ('.'); - last = now; - } - udelay (1000); /* to trigger the watchdog */ - } - - *addr = 0x00FF00FF; /* reset to read mode */ - } - } - printf (" done\n"); - return 0; -} - -/*----------------------------------------------------------------------- - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - * 4 - Flash not identified - */ - -#define FLASH_WIDTH 4 /* 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; - - if (info->flash_id == FLASH_UNKNOWN) { - return 4; - } - - 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 - */ -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE - while(cnt >= FLASH_WIDTH) { - i = CONFIG_SYS_FLASH_BUFFER_SIZE > cnt ? - (cnt & ~(FLASH_WIDTH - 1)) : CONFIG_SYS_FLASH_BUFFER_SIZE; - if((rc = write_data_buf(info, wp, src,i)) != 0) - return rc; - wp += i; - src += i; - cnt -=i; - } -#else - 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; - } -#endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */ - - 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)); -} - -/*----------------------------------------------------------------------- - * Check flash status, returns: - * 0 - OK - * 1 - timeout - */ -static int flash_status_check(vu_long *addr, ulong tout, char * prompt) -{ - ulong status; - ulong start; - - /* Wait for command completion */ - start = get_timer (0); - while(((status = *addr) & 0x00800080) != 0x00800080) { - if (get_timer(start) > tout) { - printf("Flash %s timeout at address %p\n", prompt, addr); - *addr = 0x00FF00FF; /* restore read mode */ - return (1); - } - } - return 0; -} - -/*----------------------------------------------------------------------- - * 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_long *addr = (vu_long *)dest; - int flag; - - /* Check if Flash is (sufficiently) erased */ - if ((*addr & data) != data) { - return (2); - } - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - *addr = 0x00400040; /* write setup */ - *addr = data; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - if (flash_status_check(addr, CONFIG_SYS_FLASH_WRITE_TOUT, "write") != 0) { - return (1); - } - - *addr = 0x00FF00FF; /* restore read mode */ - - return (0); -} - -#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE -/*----------------------------------------------------------------------- - * Write a buffer to Flash, returns: - * 0 - OK - * 1 - write timeout - */ -static int write_data_buf(flash_info_t * info, ulong dest, uchar * cp, int len) -{ - vu_long *addr = (vu_long *)dest; - int sector; - int cnt; - int retcode; - vu_long * src = (vu_long *)cp; - vu_long * dst = (vu_long *)dest; - - /* find sector */ - for(sector = info->sector_count - 1; sector >= 0; sector--) { - if(dest >= info->start[sector]) - break; - } - - *addr = 0x00500050; /* clear status */ - *addr = 0x00e800e8; /* write buffer */ - - if((retcode = flash_status_check(addr, CONFIG_SYS_FLASH_BUFFER_WRITE_TOUT, - "write to buffer")) == 0) { - cnt = len / FLASH_WIDTH; - *addr = (cnt-1) | ((cnt-1) << 16); - while(cnt-- > 0) { - *dst++ = *src++; - } - *addr = 0x00d000d0; /* write buffer confirm */ - retcode = flash_status_check(addr, CONFIG_SYS_FLASH_BUFFER_WRITE_TOUT, - "buffer write"); - } - *addr = 0x00FF00FF; /* restore read mode */ - *addr = 0x00500050; /* clear status */ - return retcode; -} -#endif /* CONFIG_SYS_USE_FLASH_BUFFER_WRITE */ - -/*----------------------------------------------------------------------- - */ |
