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@@ -0,0 +1,559 @@
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+/*
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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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+/*
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+ * Yoo. Jonghoon, IPone, yooth@ipone.co.kr
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+ * PPCboot 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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+
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+#include <common.h>
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+#include <mpc8xx.h>
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+
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+flash_info_t flash_info[CFG_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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+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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+ */
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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 *)CFG_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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+
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+ /* Init: no FLASHes known */
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+ for (i=0; i<CFG_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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+ /* Do sizing to get full correct info */
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+
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+ flash_get_id_word((void*)CFG_FLASH_BASE0,&manu,&dev_id);
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+
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+ size_b0 = flash_get_size(manu, dev_id, &flash_info[0]);
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+
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+ flash_get_offsets (CFG_FLASH_BASE0, &flash_info[0],0);
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+
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+ memctl->memc_or0 = CFG_OR_TIMING_FLASH | (0 - size_b0);
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+
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+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE0
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+ /* monitor protection ON by default */
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+ flash_protect(FLAG_PROTECT_SET,
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+ CFG_MONITOR_BASE,
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+ CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
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+ &flash_info[0]);
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+#endif
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+
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+ flash_get_id_long((void*)CFG_FLASH_BASE1,&manu,&dev_id);
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+
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+ size_b1 = 2 * flash_get_size(manu, dev_id, &flash_info[1]);
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+
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+ flash_get_offsets(CFG_FLASH_BASE1, &flash_info[1],1);
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+
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+ memctl->memc_or1 = CFG_OR_TIMING_FLASH | (0 - size_b1);
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+
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+ flash_info[0].size = size_b0;
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+ flash_info[1].size = size_b1;
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+
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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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+ */
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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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+
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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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+
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+ addr_shift = (two_chips ? 2 : 1 );
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+
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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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+
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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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+
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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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+ */
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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 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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+
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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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+
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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 % 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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+/*-----------------------------------------------------------------------
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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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+
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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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+
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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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+
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+ *ptr_manuf = addr[0];
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+ *ptr_dev_id = addr[1];
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+
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+ addr[0] = 0xf0f0; /* return to normal */
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+}
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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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+
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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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+
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+ *addr1 = 0xAAAA;
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+ *addr2 = 0x5555;
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+ *addr3 = 0x9090;
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+
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+ *ptr_manuf = addr[0];
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+ *ptr_dev_id = addr[2];
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+
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+ addr[0] = 0xf0f0; /* return to normal */
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+}
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+ }
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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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+/*-----------------------------------------------------------------------
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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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+
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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_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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+
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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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+ l_sect = -1;
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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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+ 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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+
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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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+
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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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+ /* wait at least 80us - let's wait 1 ms */
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+ udelay (1000);
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+
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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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+
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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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|
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+ if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
|
|
|
+ printf ("Timeout\n");
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+ /* show that we're waiting */
|
|
|
+ if ((now - last) > 1000) { /* every second */
|
|
|
+ putc ('.');
|
|
|
+ last = now;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+DONE:
|
|
|
+ /* reset to read mode */
|
|
|
+ addr = (vu_short *)info->start[0];
|
|
|
+ addr[0] = (vu_short)0xF0F0F0F0; /* 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
|
|
|
+ */
|
|
|
+ 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
|
|
|
+ */
|
|
|
+static int write_word (flash_info_t *info, ulong dest, ulong data)
|
|
|
+{
|
|
|
+ vu_short *addr = (vu_short *)(info->start[0]);
|
|
|
+ vu_short sdata;
|
|
|
+
|
|
|
+ ulong start;
|
|
|
+ int flag;
|
|
|
+
|
|
|
+ /* Check if Flash is (sufficiently) erased */
|
|
|
+ if ((*((vu_long *)dest) & data) != data) {
|
|
|
+ return (2);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* First write upper 16 bits */
|
|
|
+ sdata = (short)(data>>16);
|
|
|
+
|
|
|
+ /* Disable interrupts which might cause a timeout here */
|
|
|
+ flag = disable_interrupts();
|
|
|
+
|
|
|
+ addr[0x555] = 0xAAAA;
|
|
|
+ addr[0xAAA] = 0x5555;
|
|
|
+ addr[0x555] = 0xA0A0;
|
|
|
+
|
|
|
+ *((vu_short *)dest) = sdata;
|
|
|
+
|
|
|
+ /* 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) > CFG_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) > CFG_FLASH_WRITE_TOUT) {
|
|
|
+ return (1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return (0);
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ */
|
wdenk