mirror of
https://github.com/u-boot/u-boot.git
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560 lines
14 KiB
C
560 lines
14 KiB
C
/*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Yoo. Jonghoon, IPone, yooth@ipone.co.kr
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* U-Boot port on RPXlite board
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*
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* Some of flash control words are modified. (from 2x16bit device
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* to 4x8bit device)
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* RPXLite board I tested has only 4 AM29LV800BB devices. Other devices
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* are not tested.
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*
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* (?) Does an RPXLite board which
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* does not use AM29LV800 flash memory exist ?
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* I don't know...
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*/
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#include <common.h>
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#include <mpc8xx.h>
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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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* Functions
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*/
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static ulong flash_get_size ( short manu, short dev_id, flash_info_t *info);
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static int write_word (flash_info_t *info, ulong dest, ulong data);
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static void flash_get_offsets (ulong base, flash_info_t *info, int two_chips);
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static void flash_get_id_word( void *ptr, short *ptr_manuf, short *ptr_dev_id);
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static void flash_get_id_long( void *ptr, short *ptr_manuf, short *ptr_dev_id);
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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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unsigned long size_b0, size_b1;
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short manu, dev_id;
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int i;
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/* Init: no FLASHes known */
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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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/* Do sizing to get full correct info */
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flash_get_id_word((void*)CONFIG_SYS_FLASH_BASE0,&manu,&dev_id);
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size_b0 = flash_get_size(manu, dev_id, &flash_info[0]);
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flash_get_offsets (CONFIG_SYS_FLASH_BASE0, &flash_info[0],0);
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memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (0 - size_b0);
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#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE0
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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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flash_get_id_long((void*)CONFIG_SYS_FLASH_BASE1,&manu,&dev_id);
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size_b1 = 2 * flash_get_size(manu, dev_id, &flash_info[1]);
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flash_get_offsets(CONFIG_SYS_FLASH_BASE1, &flash_info[1],1);
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memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH | (0 - size_b1);
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flash_info[0].size = size_b0;
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flash_info[1].size = size_b1;
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return (size_b0+size_b1);
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}
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/*-----------------------------------------------------------------------
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*/
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static void flash_get_offsets (ulong base, flash_info_t *info, int two_chips)
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{
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int i, addr_shift;
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vu_short *addr = (vu_short*)base;
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addr[0x555] = 0x00AA ;
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addr[0xAAA] = 0x0055 ;
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addr[0x555] = 0x0090 ;
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addr_shift = (two_chips ? 2 : 1 );
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/* set up sector start address table */
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + (0x00000000<<addr_shift);
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info->start[1] = base + (0x00002000<<addr_shift);
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info->start[2] = base + (0x00003000<<addr_shift);
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info->start[3] = base + (0x00004000<<addr_shift);
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] = base + ((i-3) * (0x00008000<<addr_shift)) ;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - (0x00002000<<addr_shift);
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info->start[i--] = base + info->size - (0x00003000<<addr_shift);
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info->start[i--] = base + info->size - (0x00004000<<addr_shift);
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for (; i >= 0; i--) {
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info->start[i] = base + i * (0x00008000<<addr_shift);
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}
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}
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/* check for protected sectors */
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for (i = 0; i < info->sector_count; i++) {
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/* read sector protection at sector address, (A7 .. A0) = 0x02 */
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/* D0 = 1 if protected */
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addr = (vu_short *)(info->start[i]);
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info->protect[i] = addr[1<<addr_shift] & 1 ;
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}
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addr = (vu_short *)info->start[0];
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*addr = 0xF0F0; /* reset bank */
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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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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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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_AMD: printf ("AMD "); break;
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case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
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case FLASH_MAN_TOSH: printf ("TOSHIBA "); break;
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default: printf ("Unknown Vendor "); break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
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break;
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case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
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break;
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case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
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break;
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case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
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break;
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default: printf ("Unknown Chip Type\n");
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break;
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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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printf (" Sector Start Addresses:");
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for (i=0; i<info->sector_count; ++i) {
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if ((i % 5) == 0)
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printf ("\n ");
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printf (" %08lX%s",
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info->start[i],
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info->protect[i] ? " (RO)" : " "
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);
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}
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printf ("\n");
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}
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/*-----------------------------------------------------------------------
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*/
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/*-----------------------------------------------------------------------
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*/
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/*
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* The following code cannot be run from FLASH!
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*/
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static void flash_get_id_word( void *ptr, short *ptr_manuf, short *ptr_dev_id)
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{
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vu_short *addr = (vu_short*)ptr;
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addr[0x555] = 0x00AA ;
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addr[0xAAA] = 0x0055 ;
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addr[0x555] = 0x0090 ;
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*ptr_manuf = addr[0];
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*ptr_dev_id = addr[1];
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addr[0] = 0xf0f0; /* return to normal */
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}
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static void flash_get_id_long( void *ptr, short *ptr_manuf, short *ptr_dev_id)
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{
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vu_short *addr = (vu_short*)ptr;
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vu_short *addr1, *addr2, *addr3;
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addr1 = (vu_short*) ( ((int)ptr) + (0x5555<<2) );
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addr2 = (vu_short*) ( ((int)ptr) + (0x2AAA<<2) );
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addr3 = (vu_short*) ( ((int)ptr) + (0x5555<<2) );
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*addr1 = 0xAAAA;
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*addr2 = 0x5555;
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*addr3 = 0x9090;
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*ptr_manuf = addr[0];
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*ptr_dev_id = addr[2];
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addr[0] = 0xf0f0; /* return to normal */
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}
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static ulong flash_get_size ( short manu, short dev_id, flash_info_t *info)
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{
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switch (manu) {
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case ((short)AMD_MANUFACT):
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info->flash_id = FLASH_MAN_AMD;
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break;
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case ((short)FUJ_MANUFACT):
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info->flash_id = FLASH_MAN_FUJ;
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break;
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case ((short)TOSH_MANUFACT):
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info->flash_id = FLASH_MAN_TOSH;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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info->size = 0;
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return (0); /* no or unknown flash */
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}
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switch (dev_id) {
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case ((short)TOSH_ID_FVT160):
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info->flash_id += FLASH_AM160T;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 1 MB */
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case ((short)TOSH_ID_FVB160):
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info->flash_id += FLASH_AM160B;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 1 MB */
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case ((short)AMD_ID_LV400T):
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info->flash_id += FLASH_AM400T;
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info->sector_count = 11;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case ((short)AMD_ID_LV400B):
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info->flash_id += FLASH_AM400B;
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info->sector_count = 11;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case ((short)AMD_ID_LV800T):
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info->flash_id += FLASH_AM800T;
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info->sector_count = 19;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case ((short)AMD_ID_LV800B):
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info->flash_id += FLASH_AM800B;
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info->sector_count = 19;
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info->size = 0x00400000; /*%%% Size doubled by yooth */
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break; /* => 4 MB */
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case ((short)AMD_ID_LV160T):
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info->flash_id += FLASH_AM160T;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 4 MB */
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case ((short)AMD_ID_LV160B):
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info->flash_id += FLASH_AM160B;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 4 MB */
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* => no or unknown flash */
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}
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return(info->size);
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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 = (vu_short*)(info->start[0]);
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int flag, prot, sect, l_sect;
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ulong start, now, last;
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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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if ((info->flash_id == FLASH_UNKNOWN) ||
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(info->flash_id > FLASH_AMD_COMP)) {
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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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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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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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l_sect = -1;
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/* Disable interrupts which might cause a timeout here */
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flag = disable_interrupts();
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addr[0x555] = (vu_short)0xAAAAAAAA;
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addr[0xAAA] = (vu_short)0x55555555;
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addr[0x555] = (vu_short)0x80808080;
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addr[0x555] = (vu_short)0xAAAAAAAA;
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addr[0xAAA] = (vu_short)0x55555555;
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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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if (info->protect[sect] == 0) { /* not protected */
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addr = (vu_short *)(info->start[sect]) ;
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addr[0] = (vu_short)0x30303030 ;
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l_sect = sect;
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}
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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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/* wait at least 80us - let's wait 1 ms */
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udelay (1000);
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/*
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* We wait for the last triggered sector
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*/
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if (l_sect < 0)
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goto DONE;
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start = get_timer (0);
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last = start;
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addr = (vu_short *)(info->start[l_sect]);
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while ((addr[0] & 0x8080) != 0x8080) {
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if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
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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 - last) > 1000) { /* every second */
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putc ('.');
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last = now;
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}
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}
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DONE:
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/* reset to read mode */
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addr = (vu_short *)info->start[0];
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addr[0] = (vu_short)0xF0F0F0F0; /* reset bank */
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printf (" done\n");
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return 0;
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}
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/*-----------------------------------------------------------------------
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* Copy memory to flash, returns:
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* 0 - OK
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* 1 - write timeout
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* 2 - Flash not erased
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*/
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int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
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{
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ulong cp, wp, data;
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int i, l, rc;
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wp = (addr & ~3); /* get lower word aligned address */
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/*
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* handle unaligned start bytes
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*/
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if ((l = addr - wp) != 0) {
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data = 0;
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for (i=0, cp=wp; i<l; ++i, ++cp) {
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data = (data << 8) | (*(uchar *)cp);
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}
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for (; i<4 && cnt>0; ++i) {
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data = (data << 8) | *src++;
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--cnt;
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++cp;
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}
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for (; cnt==0 && i<4; ++i, ++cp) {
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data = (data << 8) | (*(uchar *)cp);
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}
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if ((rc = write_word(info, wp, data)) != 0) {
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return (rc);
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}
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wp += 4;
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}
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/*
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* handle word aligned part
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*/
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while (cnt >= 4) {
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data = 0;
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for (i=0; i<4; ++i) {
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data = (data << 8) | *src++;
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}
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if ((rc = write_word(info, wp, data)) != 0) {
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return (rc);
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}
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wp += 4;
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cnt -= 4;
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}
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if (cnt == 0) {
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return (0);
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}
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/*
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* handle unaligned tail bytes
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*/
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data = 0;
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for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
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data = (data << 8) | *src++;
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--cnt;
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}
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for (; i<4; ++i, ++cp) {
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data = (data << 8) | (*(uchar *)cp);
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}
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return (write_word(info, wp, data));
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}
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/*-----------------------------------------------------------------------
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* Write a word to Flash, returns:
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* 0 - OK
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* 1 - write timeout
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* 2 - Flash not erased
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*/
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static int write_word (flash_info_t *info, ulong dest, ulong data)
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{
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vu_short *addr = (vu_short *)(info->start[0]);
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vu_short sdata;
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ulong start;
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int flag;
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/* Check if Flash is (sufficiently) erased */
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if ((*((vu_long *)dest) & data) != data) {
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return (2);
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}
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/* First write upper 16 bits */
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sdata = (short)(data>>16);
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/* Disable interrupts which might cause a timeout here */
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flag = disable_interrupts();
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addr[0x555] = 0xAAAA;
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addr[0xAAA] = 0x5555;
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addr[0x555] = 0xA0A0;
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*((vu_short *)dest) = sdata;
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|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
while ((*((vu_short *)dest) & 0x8080) != (sdata & 0x8080)) {
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
/* Now write lower 16 bits */
|
|
sdata = (short)(data&0xffff);
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
addr[0x555] = 0xAAAA;
|
|
addr[0xAAA] = 0x5555;
|
|
addr[0x555] = 0xA0A0;
|
|
|
|
*((vu_short *)dest + 1) = sdata;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
while ((*((vu_short *)dest + 1) & 0x8080) != (sdata & 0x8080)) {
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|