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@@ -1,687 +0,0 @@
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-/*
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- * (C) Copyright 2001
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- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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- *
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- * SPDX-License-Identifier: GPL-2.0+
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- */
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-
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-#include <common.h>
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-#include <mpc8xx.h>
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-#include <flash.h>
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-
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-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
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-
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-/*-----------------------------------------------------------------------
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- * Functions
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- */
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-ulong flash_recognize (vu_long *base);
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-int write_word (flash_info_t *info, ulong dest, ulong data);
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-void flash_get_geometry (vu_long *base, flash_info_t *info);
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-void flash_unprotect(flash_info_t *info);
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-int _flash_real_protect(flash_info_t *info, long idx, int on);
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-
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-
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-unsigned long flash_init (void)
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-{
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- volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
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- volatile memctl8xx_t *memctl = &immap->im_memctl;
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- int i;
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- int rec;
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-
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- for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
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- flash_info[i].flash_id = FLASH_UNKNOWN;
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- }
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-
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- *((vu_short*)CONFIG_SYS_FLASH_BASE) = 0xffff;
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-
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- flash_get_geometry ((vu_long*)CONFIG_SYS_FLASH_BASE, &flash_info[0]);
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-
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- /* Remap FLASH according to real size */
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- memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-flash_info[0].size & 0xFFFF8000);
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- memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) |
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- (memctl->memc_br0 & ~(BR_BA_MSK));
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-
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- rec = flash_recognize((vu_long*)CONFIG_SYS_FLASH_BASE);
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-
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- if (rec == FLASH_UNKNOWN) {
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- printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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- flash_info[0].size, flash_info[0].size<<20);
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- }
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-
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-#if CONFIG_SYS_FLASH_PROTECTION
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- /*Unprotect all the flash memory*/
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- flash_unprotect(&flash_info[0]);
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-#endif
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-
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- *((vu_short*)CONFIG_SYS_FLASH_BASE) = 0xffff;
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-
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- return (flash_info[0].size);
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-
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-#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
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- /* monitor protection ON by default */
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- flash_protect(FLAG_PROTECT_SET,
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- CONFIG_SYS_MONITOR_BASE,
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- CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
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- &flash_info[0]);
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-#endif
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-
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-#ifdef CONFIG_ENV_IS_IN_FLASH
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- /* ENV protection ON by default */
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- flash_protect(FLAG_PROTECT_SET,
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- CONFIG_ENV_OFFSET,
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- CONFIG_ENV_OFFSET+CONFIG_ENV_SIZE-1,
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- &flash_info[0]);
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-#endif
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- return (flash_info[0].size);
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-}
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-
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-
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-int flash_get_protect_status(flash_info_t * info, long idx)
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-{
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- vu_short * base;
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- ushort res;
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-
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-#ifdef DEBUG
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- printf("\n Attempting to set protection info with %d sectors\n", info->sector_count);
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-#endif
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-
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-
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- base = (vu_short*)info->start[idx];
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-
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- *(base) = 0xffff;
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-
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- *(base + 0x55) = 0x0098;
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- res = base[0x2];
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-
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- *(base) = 0xffff;
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-
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- if(res != 0)
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- res = 1;
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- else
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- res = 0;
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-
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- return res;
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-}
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-
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-void flash_get_geometry (vu_long *base, flash_info_t *info)
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-{
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- int i,j;
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- ulong ner = 0;
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- vu_short * sb = (vu_short*)base;
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- ulong offset = (ulong)base;
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-
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- /* Read Device geometry */
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-
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- *sb = 0xffff;
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-
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- *sb = 0x0090;
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-
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- info->flash_id = ((ulong)base[0x0]);
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-#ifdef DEBUG
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- printf("Id is %x\n", (uint)(ulong)info->flash_id);
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-#endif
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-
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- *sb = 0xffff;
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-
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- *(sb+0x55) = 0x0098;
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-
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- info->size = 1 << (sb[0x27]); /* Read flash size */
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-
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-#ifdef DEBUG
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- printf("Size is %x\n", (uint)(ulong)info->size);
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-#endif
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-
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- *sb = 0xffff;
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-
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- *(sb + 0x55) = 0x0098;
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- ner = sb[0x2c] ; /*Number of erase regions*/
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-
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-#ifdef DEBUG
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- printf("Number of erase regions %x\n", (uint)ner);
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-#endif
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-
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- info->sector_count = 0;
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-
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- for(i = 0; i < ner; i++)
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- {
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- uint s;
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- uint count;
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- uint t1,t2,t3,t4;
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-
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- *sb = 0xffff;
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-
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- *(sb + 0x55) = 0x0098;
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-
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- t1 = sb[0x2d + i*4];
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- t2 = sb[0x2e + i*4];
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- t3 = sb[0x2f + i*4];
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- t4 = sb[0x30 + i*4];
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-
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- count = ((t1 & 0x00ff) | (((t2 & 0x00ff) << 8) & 0xff00) )+ 1; /*sector count*/
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- s = ((t3 & 0x00ff) | (((t4 & 0x00ff) << 8) & 0xff00)) * 256;; /*Sector size*/
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-
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-#ifdef DEBUG
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- printf("count and size %x, %x\n", count, s);
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- printf("sector count for erase region %d is %d\n", i, count);
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-#endif
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- for(j = 0; j < count; j++)
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- {
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-#ifdef DEBUG
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- printf("%x, ", (uint)offset);
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-#endif
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- info->start[ info->sector_count + j] = offset;
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- offset += s;
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- }
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- info->sector_count += count;
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- }
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-
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- if ((offset - (ulong)base) != info->size)
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- printf("WARNING reported size %x does not match to calculted size %x.\n"
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- , (uint)info->size, (uint)(offset - (ulong)base) );
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-
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- /* Next check if there are any sectors protected.*/
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-
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- for(i = 0; i < info->sector_count; i++)
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- info->protect[i] = flash_get_protect_status(info, i);
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-
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- *sb = 0xffff;
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-void flash_print_info (flash_info_t *info)
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-{
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- int i;
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-
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- if (info->flash_id == FLASH_UNKNOWN) {
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- printf ("missing or unknown FLASH type\n");
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- return ;
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- }
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-
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- switch (info->flash_id & FLASH_VENDMASK) {
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- case INTEL_MANUFACT & FLASH_VENDMASK:
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- printf ("Intel ");
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- break;
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- default:
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- printf ("Unknown Vendor ");
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- break;
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- }
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-
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- switch (info->flash_id & FLASH_TYPEMASK) {
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- case INTEL_ID_28F320C3B & FLASH_TYPEMASK:
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- printf ("28F320RC3(4 MB)\n");
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- break;
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- case INTEL_ID_28F320J3A:
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- printf("28F320J3A (4 MB)\n");
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- break;
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- default:
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- printf ("Unknown Chip Type\n");
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- break;
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- }
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-
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- printf (" Size: %ld MB in %d Sectors\n",
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- info->size >> 20, info->sector_count);
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-
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- printf (" Sector Start Addresses:");
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- for (i=0; i<info->sector_count; ++i) {
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- if ((i % 4) == 0)
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- printf ("\n ");
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- printf (" %02d %08lX%s",
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- i, info->start[i],
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- info->protect[i]!=0 ? " (RO)" : " "
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- );
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- }
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- printf ("\n");
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- return ;
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-}
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-
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-ulong flash_recognize (vu_long *base)
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-{
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- ulong id;
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- ulong res = FLASH_UNKNOWN;
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- vu_short * sb = (vu_short*)base;
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-
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- *sb = 0xffff;
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-
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- *sb = 0x0090;
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- id = base[0];
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-
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- switch (id & 0x00FF0000)
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- {
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- case (MT_MANUFACT & 0x00FF0000): /* MT or => Intel */
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- case (INTEL_ALT_MANU & 0x00FF0000):
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- res = FLASH_MAN_INTEL;
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- break;
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- default:
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- res = FLASH_UNKNOWN;
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- }
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-
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- *sb = 0xffff;
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-
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- return res;
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-}
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-
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-/*-----------------------------------------------------------------------*/
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-#define INTEL_FLASH_STATUS_BLS 0x02
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-#define INTEL_FLASH_STATUS_PSS 0x04
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-#define INTEL_FLASH_STATUS_VPPS 0x08
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-#define INTEL_FLASH_STATUS_PS 0x10
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-#define INTEL_FLASH_STATUS_ES 0x20
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-#define INTEL_FLASH_STATUS_ESS 0x40
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-#define INTEL_FLASH_STATUS_WSMS 0x80
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-
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-int flash_decode_status_bits(char status)
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-{
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- int err = 0;
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-
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- if(!(status & INTEL_FLASH_STATUS_WSMS)) {
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- printf("Busy\n");
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- err = -1;
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- }
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-
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- if(status & INTEL_FLASH_STATUS_ESS) {
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- printf("Erase suspended\n");
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- err = -1;
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- }
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-
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- if(status & INTEL_FLASH_STATUS_ES) {
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- printf("Error in block erase\n");
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- err = -1;
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- }
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-
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- if(status & INTEL_FLASH_STATUS_PS) {
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- printf("Error in programming\n");
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- err = -1;
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- }
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-
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- if(status & INTEL_FLASH_STATUS_VPPS) {
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- printf("Vpp low, operation aborted\n");
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- err = -1;
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- }
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-
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- if(status & INTEL_FLASH_STATUS_PSS) {
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- printf("Program is suspended\n");
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- err = -1;
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- }
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-
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- if(status & INTEL_FLASH_STATUS_BLS) {
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- printf("Attempting to program/erase a locked sector\n");
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- err = -1;
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- }
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-
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- if((status & INTEL_FLASH_STATUS_PS) &&
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- (status & INTEL_FLASH_STATUS_ES) &&
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- (status & INTEL_FLASH_STATUS_ESS)) {
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- printf("A command sequence error\n");
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- return -1;
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- }
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-
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- return err;
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-
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-int flash_erase (flash_info_t *info, int s_first, int s_last)
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-{
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- vu_short *addr;
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- int flag, prot, sect;
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- ulong start, now;
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- int rcode = 0;
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-
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- if ((s_first < 0) || (s_first > s_last)) {
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- if (info->flash_id == FLASH_UNKNOWN) {
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- printf ("- missing\n");
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- } else {
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- printf ("- no sectors to erase\n");
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- }
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- return 1;
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- }
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-
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- if ((info->flash_id & FLASH_VENDMASK) != (INTEL_MANUFACT & FLASH_VENDMASK)) {
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- printf ("Can't erase unknown flash type %08lx - aborted\n",
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- info->flash_id);
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- return 1;
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- }
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-
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- prot = 0;
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- for (sect=s_first; sect<=s_last; ++sect) {
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- if (info->protect[sect]) {
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- prot++;
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- }
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- }
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-
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- if (prot) {
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- printf ("- Warning: %d protected sectors will not be erased!\n",
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- prot);
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- } else {
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- printf ("\n");
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- }
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-
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- start = get_timer (0);
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-
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- /* Start erase on unprotected sectors */
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- for (sect = s_first; sect<=s_last; sect++) {
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- char tmp;
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-
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- if (info->protect[sect] == 0) { /* not protected */
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- addr = (vu_short *)(info->start[sect]);
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-
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- /* Disable interrupts which might cause a timeout here */
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- flag = disable_interrupts();
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-
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- /* Single Block Erase Command */
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- *addr = 0x0020;
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- /* Confirm */
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- *addr = 0x00D0;
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- /* Resume Command, as per errata update */
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- *addr = 0x00D0;
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-
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- /* re-enable interrupts if necessary */
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- if (flag)
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- enable_interrupts();
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-
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- *addr = 0x70; /*Read status register command*/
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- tmp = (short)*addr & 0x00FF; /* Read the status */
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- while (!(tmp & INTEL_FLASH_STATUS_WSMS)) {
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- if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
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- *addr = 0x0050; /* Reset the status register */
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- *addr = 0xffff;
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- printf ("Timeout\n");
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- return 1;
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- }
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- /* show that we're waiting */
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- if ((now - start) > 1000) { /* every second */
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- putc ('.');
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- }
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- udelay(100000); /* 100 ms */
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- *addr = 0x0070; /*Read status register command*/
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- tmp = (short)*addr & 0x00FF; /* Read status */
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- start = get_timer(0);
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- }
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- if( tmp & INTEL_FLASH_STATUS_ES )
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- flash_decode_status_bits(tmp);
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-
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- *addr = 0x0050; /* Reset the status register */
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- *addr = 0xffff; /* Reset to read mode */
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- }
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- }
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-
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-
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- printf (" done\n");
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- return rcode;
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-}
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-
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-void flash_unprotect (flash_info_t *info)
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-{
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- /*We can only unprotect the whole flash at once*/
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- /*Therefore we must prevent the _flash_real_protect()*/
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- /*from re-protecting sectors, that ware protected before */
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- /*we called flash_real_protect();*/
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-
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- int i;
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-
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- for(i = 0; i < info->sector_count; i++)
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- info->protect[i] = 0;
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-
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-#ifdef CONFIG_SYS_FLASH_PROTECTION
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- _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;
|
|
|
-}
|