+++ /dev/null
-/*
- * (C) Copyright 2000
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <mpc8xx.h>
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-/*
- * Functions
- */
-static ulong flash_get_size(vu_long *addr, flash_info_t *info);
-static int write_word(flash_info_t *info, ulong dest, ulong data);
-static void flash_get_offsets(ulong base, flash_info_t *info);
-
-unsigned long flash_init(void)
-{
- unsigned long size_b0;
- int i;
-
- /* Init: no FLASHes known */
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
- flash_info[i].flash_id = FLASH_UNKNOWN;
-
- /* Detect size */
- size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE,
- &flash_info[0]);
-
- /* Setup offsets */
- flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]);
-
-#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
-
- flash_info[0].size = size_b0;
-
- return size_b0;
-}
-
-/*-----------------------------------------------------------------------
- * Fix this to support variable sector sizes
-*/
-static void flash_get_offsets(ulong base, flash_info_t *info)
-{
- int i;
-
- /* set up sector start address table */
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
- /* set sector offsets for bottom boot block type */
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * 0x00010000);
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info(flash_info_t *info)
-{
- int i;
-
- if (info->flash_id == FLASH_UNKNOWN) {
- puts("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_BM:
- printf("BRIGHT MICRO ");
- break;
- default:
- printf("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM040:
- printf("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
- break;
- case FLASH_AM400B:
- printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM400T:
- printf("AM29LV400T (4 Mbit, top boot sector)\n");
- break;
- case FLASH_AM800B:
- printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM800T:
- printf("AM29LV800T (8 Mbit, top boot sector)\n");
- break;
- case FLASH_AM160B:
- printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM160T:
- printf("AM29LV160T (16 Mbit, top boot sector)\n");
- break;
- case FLASH_AM320B:
- printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM320T:
- printf("AM29LV320T (32 Mbit, top boot sector)\n");
- break;
- default:
- printf("Unknown Chip Type\n");
- break;
- }
-
- if (info->size >> 20) {
- printf(" Size: %ld MB in %d Sectors\n",
- info->size >> 20,
- info->sector_count);
- } else {
- printf(" Size: %ld KB in %d Sectors\n",
- info->size >> 10,
- info->sector_count);
- }
-
- puts(" Sector Start Addresses:");
-
- for (i = 0; i < info->sector_count; ++i) {
- if ((i % 5) == 0)
- puts("\n ");
-
- printf(" %08lX%s",
- info->start[i],
- info->protect[i] ? " (RO)" : " ");
- }
-
- putc('\n');
- return;
-}
-
-/*
- * The following code cannot be run from FLASH!
- */
-
-static ulong flash_get_size(vu_long *addr, flash_info_t *info)
-{
- short i;
- volatile unsigned char *caddr;
- char value;
-
- caddr = (volatile unsigned char *)addr ;
-
- /* Write auto select command: read Manufacturer ID */
-
- debug("Base address is: %8p\n", caddr);
-
- caddr[0x0555] = 0xAA;
- caddr[0x02AA] = 0x55;
- caddr[0x0555] = 0x90;
-
- value = caddr[0];
-
- debug("Manufact ID: %02x\n", value);
-
- switch (value) {
- case 0x01: /*AMD_MANUFACT*/
- info->flash_id = FLASH_MAN_AMD;
- break;
-
- case 0x04: /*FUJ_MANUFACT*/
- info->flash_id = FLASH_MAN_FUJ;
- break;
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- break;
- }
-
- value = caddr[1]; /* device ID */
-
- debug("Device ID: %02x\n", value);
-
- switch (value) {
- case AMD_ID_LV040B:
- info->flash_id += FLASH_AM040;
- info->sector_count = 8;
- info->size = 0x00080000;
- break; /* => 512Kb */
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- return 0; /* => no or unknown flash */
- }
-
- flash_get_offsets((ulong)addr, &flash_info[0]);
-
- /* check for protected sectors */
- for (i = 0; i < info->sector_count; i++) {
- /*
- * read sector protection at sector address,
- * (A7 .. A0) = 0x02
- * D0 = 1 if protected
- */
- caddr = (volatile unsigned char *)(info->start[i]);
- info->protect[i] = caddr[2] & 1;
- }
-
- /*
- * Prevent writes to uninitialized FLASH.
- */
- if (info->flash_id != FLASH_UNKNOWN) {
- caddr = (volatile unsigned char *)info->start[0];
- *caddr = 0xF0; /* reset bank */
- }
-
- return info->size;
-}
-
-
-int flash_erase(flash_info_t *info, int s_first, int s_last)
-{
- volatile unsigned char *addr =
- (volatile unsigned char *)(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 - 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");
- }
-
- l_sect = -1;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- addr[0x0555] = 0xAA;
- addr[0x02AA] = 0x55;
- addr[0x0555] = 0x80;
- addr[0x0555] = 0xAA;
- addr[0x02AA] = 0x55;
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- addr = (volatile unsigned char *)(info->start[sect]);
- addr[0] = 0x30;
- 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 = (volatile unsigned char *)(info->start[l_sect]);
-
- while ((addr[0] & 0xFF) != 0xFF) {
- now = get_timer(start);
- if (now > 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 = (volatile unsigned char *)info->start[0];
-
- addr[0] = 0xF0; /* reset bank */
-
- printf(" done\n");
- return 0;
-}
-
-/*
- * 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
- */
- l = addr - wp;
-
- if (l != 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);
-
- rc = write_word(info, wp, data);
-
- if (rc != 0)
- return rc;
-
- wp += 4;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
- data = 0;
- for (i = 0; i < 4; ++i)
- data = (data << 8) | *src++;
-
- rc = write_word(info, wp, data);
-
- if (rc != 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
- */
-static int write_word(flash_info_t *info, ulong dest, ulong data)
-{
- volatile unsigned char *cdest, *cdata;
- volatile unsigned char *addr =
- (volatile unsigned char *)(info->start[0]);
- ulong start;
- int flag, count = 4 ;
-
- cdest = (volatile unsigned char *)dest ;
- cdata = (volatile unsigned char *)&data ;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*((vu_long *)dest)&data) != data)
- return 2;
-
- while (count--) {
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- addr[0x0555] = 0xAA;
- addr[0x02AA] = 0x55;
- addr[0x0555] = 0xA0;
-
- *cdest = *cdata;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* data polling for D7 */
- start = get_timer(0);
- while ((*cdest ^ *cdata) & 0x80) {
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
- return 1;
- }
-
- cdata++ ;
- cdest++ ;
- }
- return 0;
-}
projects / karo-tx-uboot.git / blobdiff