|
@@ -0,0 +1,805 @@
|
|
|
+/*
|
|
|
+ * (C) Copyright 2001
|
|
|
+ * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
|
|
|
+ *
|
|
|
+ * See file CREDITS for list of people who contributed to this
|
|
|
+ * project.
|
|
|
+ *
|
|
|
+ * This program is free software; you can redistribute it and/or
|
|
|
+ * modify it under the terms of the GNU General Public License as
|
|
|
+ * published by the Free Software Foundation; either version 2 of
|
|
|
+ * the License, or (at your option) any later version.
|
|
|
+ *
|
|
|
+ * This program is distributed in the hope that it will be useful,
|
|
|
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
+ * GNU General Public License for more details.
|
|
|
+ *
|
|
|
+ * You should have received a copy of the GNU General Public License
|
|
|
+ * along with this program; if not, write to the Free Software
|
|
|
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
|
+ * MA 02111-1307 USA
|
|
|
+ */
|
|
|
+
|
|
|
+/*
|
|
|
+ * flash.c - flash support for the 512k, 8bit boot flash on the GEVB
|
|
|
+ * most of this file was based on the existing U-Boot
|
|
|
+ * flash drivers.
|
|
|
+ */
|
|
|
+
|
|
|
+#include <common.h>
|
|
|
+#include <mpc8xx.h>
|
|
|
+#include <galileo/gt64260R.h>
|
|
|
+#include <galileo/memory.h>
|
|
|
+#include "intel_flash.h"
|
|
|
+
|
|
|
+#define FLASH_ROM 0xFFFD /* unknown flash type */
|
|
|
+#define FLASH_RAM 0xFFFE /* unknown flash type */
|
|
|
+#define FLASH_MAN_UNKNOWN 0xFFFF0000
|
|
|
+
|
|
|
+/* #define DEBUG */
|
|
|
+/* #define FLASH_ID_OVERRIDE */ /* Hack to set type to 040B if ROM emulator is installed.
|
|
|
+ * Can be used to program a ROM in circuit if a programmer
|
|
|
+ * is not available by swapping the rom out. */
|
|
|
+
|
|
|
+/* Intel flash commands */
|
|
|
+int flash_erase_intel(flash_info_t *info, int s_first, int s_last);
|
|
|
+int write_word_intel(bank_addr_t addr, bank_word_t value);
|
|
|
+
|
|
|
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ * Functions
|
|
|
+ */
|
|
|
+static ulong flash_get_size (int portwidth, 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 int i;
|
|
|
+ unsigned long size_b0 = 0, size_b1 = 0;
|
|
|
+ unsigned long base, flash_size;
|
|
|
+
|
|
|
+ /* Init: no FLASHes known */
|
|
|
+ for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
|
|
|
+ flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* the boot flash */
|
|
|
+ base = CFG_FLASH_BASE;
|
|
|
+ size_b0 = flash_get_size(1, (vu_long *)base, &flash_info[0]);
|
|
|
+
|
|
|
+ printf("[%ldkB@%lx] ", size_b0/1024, base);
|
|
|
+
|
|
|
+ if (flash_info[0].flash_id == FLASH_UNKNOWN) {
|
|
|
+ printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n",
|
|
|
+ base, size_b0, size_b0<<20);
|
|
|
+ }
|
|
|
+
|
|
|
+ base = memoryGetDeviceBaseAddress(CFG_EXTRA_FLASH_DEVICE);
|
|
|
+ for(i=1;i<CFG_MAX_FLASH_BANKS;i++) {
|
|
|
+ unsigned long size = flash_get_size(CFG_EXTRA_FLASH_WIDTH, (vu_long *)base, &flash_info[i]);
|
|
|
+
|
|
|
+ printf("[%ldMB@%lx] ", size>>20, base);
|
|
|
+
|
|
|
+ if (flash_info[i].flash_id == FLASH_UNKNOWN) {
|
|
|
+ if(i==1) {
|
|
|
+ printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n",
|
|
|
+ base, size_b1, size_b1<<20);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ size_b1+=size;
|
|
|
+ base+=size;
|
|
|
+ }
|
|
|
+
|
|
|
+ flash_size = size_b0 + size_b1;
|
|
|
+ return flash_size;
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ */
|
|
|
+static void
|
|
|
+flash_get_offsets (ulong base, flash_info_t *info)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ int sector_size;
|
|
|
+
|
|
|
+ if(!info->sector_count) return;
|
|
|
+
|
|
|
+ /* set up sector start address table */
|
|
|
+ switch(info->flash_id & FLASH_TYPEMASK) {
|
|
|
+ case FLASH_AM040:
|
|
|
+ case FLASH_28F128J3A:
|
|
|
+ case FLASH_28F640J3A:
|
|
|
+ case FLASH_RAM:
|
|
|
+ /* this chip has uniformly spaced sectors */
|
|
|
+ sector_size=info->size/info->sector_count;
|
|
|
+ for (i = 0; i < info->sector_count; i++)
|
|
|
+ info->start[i] = base + (i * sector_size);
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ if (info->flash_id & FLASH_BTYPE) {
|
|
|
+ /* set sector offsets for bottom boot block type */
|
|
|
+ info->start[0] = base + 0x00000000;
|
|
|
+ info->start[1] = base + 0x00008000;
|
|
|
+ info->start[2] = base + 0x0000C000;
|
|
|
+ info->start[3] = base + 0x00010000;
|
|
|
+ for (i = 4; i < info->sector_count; i++) {
|
|
|
+ info->start[i] = base + (i * 0x00020000) - 0x00060000;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* set sector offsets for top boot block type */
|
|
|
+ i = info->sector_count - 1;
|
|
|
+ info->start[i--] = base + info->size - 0x00008000;
|
|
|
+ info->start[i--] = base + info->size - 0x0000C000;
|
|
|
+ info->start[i--] = base + info->size - 0x00010000;
|
|
|
+ for (; i >= 0; i--) {
|
|
|
+ info->start[i] = base + i * 0x00020000;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ */
|
|
|
+void
|
|
|
+flash_print_info (flash_info_t *info)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+
|
|
|
+ if (info->flash_id == FLASH_UNKNOWN) {
|
|
|
+ printf ("missing or unknown FLASH type\n");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (info->flash_id & FLASH_VENDMASK) {
|
|
|
+ case FLASH_MAN_AMD: printf ("AMD "); break;
|
|
|
+ case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
|
|
|
+ case FLASH_MAN_INTEL: printf ("INTEL "); break;
|
|
|
+ default: printf ("Unknown Vendor "); break;
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (info->flash_id & FLASH_TYPEMASK) {
|
|
|
+ case FLASH_AM040:
|
|
|
+ printf ("AM29LV040B (4 Mbit, bottom boot sect)\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;
|
|
|
+ case FLASH_28F640J3A:
|
|
|
+ printf ("28F640J3A (64 Mbit)\n");
|
|
|
+ break;
|
|
|
+ case FLASH_28F128J3A:
|
|
|
+ printf ("28F128J3A (128 Mbit)\n");
|
|
|
+ break;
|
|
|
+ case FLASH_ROM:
|
|
|
+ printf ("ROM\n");
|
|
|
+ break;
|
|
|
+ case FLASH_RAM:
|
|
|
+ printf ("RAM\n");
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ printf ("Unknown Chip Type\n");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ puts (" Size: ");
|
|
|
+ print_size (info->size, "");
|
|
|
+ printf (" in %d Sectors\n", info->sector_count);
|
|
|
+
|
|
|
+ printf (" Sector Start Addresses:");
|
|
|
+ for (i=0; i<info->sector_count; ++i) {
|
|
|
+ if ((i % 5) == 0)
|
|
|
+ printf ("\n ");
|
|
|
+ printf (" %08lX%s",
|
|
|
+ info->start[i],
|
|
|
+ info->protect[i] ? " (RO)" : " "
|
|
|
+ );
|
|
|
+ }
|
|
|
+ printf ("\n");
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ */
|
|
|
+
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ */
|
|
|
+
|
|
|
+/*
|
|
|
+ * The following code cannot be run from FLASH!
|
|
|
+ */
|
|
|
+
|
|
|
+static inline void flash_cmd(int width, volatile unsigned char *addr, int offset, unsigned char cmd)
|
|
|
+{
|
|
|
+ /* supports 1x8, 1x16, and 2x16 */
|
|
|
+ /* 2x8 and 4x8 are not supported */
|
|
|
+ if(width==4) {
|
|
|
+ /* assuming chips are in 16 bit mode */
|
|
|
+ /* 2x16 */
|
|
|
+ unsigned long cmd32=(cmd<<16)|cmd;
|
|
|
+ *(volatile unsigned long *)(addr+offset*2)=cmd32;
|
|
|
+ } else {
|
|
|
+ /* 1x16 or 1x8 */
|
|
|
+ *(volatile unsigned char *)(addr+offset)=cmd;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static ulong
|
|
|
+flash_get_size (int portwidth, vu_long *addr, flash_info_t *info)
|
|
|
+{
|
|
|
+ short i;
|
|
|
+ volatile unsigned char *caddr = (unsigned char *)addr;
|
|
|
+ volatile unsigned short *saddr = (unsigned short *)addr;
|
|
|
+ volatile unsigned long *laddr = (unsigned long *)addr;
|
|
|
+ char old[2], save;
|
|
|
+ ulong id, manu, base = (ulong)addr;
|
|
|
+
|
|
|
+ info->portwidth=portwidth;
|
|
|
+
|
|
|
+ save = *caddr;
|
|
|
+
|
|
|
+ flash_cmd(portwidth,caddr,0,0xf0);
|
|
|
+ flash_cmd(portwidth,caddr,0,0xf0);
|
|
|
+
|
|
|
+ udelay(10);
|
|
|
+
|
|
|
+ old[0] = caddr[0];
|
|
|
+ old[1] = caddr[1];
|
|
|
+
|
|
|
+
|
|
|
+ if(old[0]!=0xf0) {
|
|
|
+ flash_cmd(portwidth,caddr,0,0xf0);
|
|
|
+ flash_cmd(portwidth,caddr,0,0xf0);
|
|
|
+
|
|
|
+ udelay(10);
|
|
|
+
|
|
|
+ if(*caddr==0xf0) {
|
|
|
+ /* this area is ROM */
|
|
|
+ *caddr=save;
|
|
|
+#ifndef FLASH_ID_OVERRIDE
|
|
|
+ info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
|
|
|
+ info->sector_count = 8;
|
|
|
+ info->size = 0x80000;
|
|
|
+#else
|
|
|
+ info->flash_id = FLASH_MAN_AMD + FLASH_AM040;
|
|
|
+ info->sector_count = 8;
|
|
|
+ info->size = 0x80000;
|
|
|
+ info->chipwidth=1;
|
|
|
+#endif
|
|
|
+ flash_get_offsets(base, info);
|
|
|
+ return info->size;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ *caddr=0;
|
|
|
+
|
|
|
+ udelay(10);
|
|
|
+
|
|
|
+ if(*caddr==0) {
|
|
|
+ /* this area is RAM */
|
|
|
+ *caddr=save;
|
|
|
+ info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN;
|
|
|
+ info->sector_count = 8;
|
|
|
+ info->size = 0x80000;
|
|
|
+ flash_get_offsets(base, info);
|
|
|
+ return info->size;
|
|
|
+ }
|
|
|
+ flash_cmd(portwidth,caddr,0,0xf0);
|
|
|
+
|
|
|
+ udelay(10);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Write auto select command: read Manufacturer ID */
|
|
|
+ flash_cmd(portwidth,caddr,0x555,0xAA);
|
|
|
+ flash_cmd(portwidth,caddr,0x2AA,0x55);
|
|
|
+ flash_cmd(portwidth,caddr,0x555,0x90);
|
|
|
+
|
|
|
+ udelay(10);
|
|
|
+
|
|
|
+ if ((caddr[0] == old[0]) &&
|
|
|
+ (caddr[1] == old[1])) {
|
|
|
+
|
|
|
+ /* this area is ROM */
|
|
|
+#ifndef FLASH_ID_OVERRIDE
|
|
|
+ info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
|
|
|
+ info->sector_count = 8;
|
|
|
+ info->size = 0x80000;
|
|
|
+#else
|
|
|
+ info->flash_id = FLASH_MAN_AMD + FLASH_AM040;
|
|
|
+ info->sector_count = 8;
|
|
|
+ info->size = 0x80000;
|
|
|
+ info->chipwidth=1;
|
|
|
+#endif
|
|
|
+ flash_get_offsets(base, info);
|
|
|
+ return info->size;
|
|
|
+#ifdef DEBUG
|
|
|
+ } else {
|
|
|
+ printf("%px%d: %02x:%02x -> %02x:%02x\n",
|
|
|
+ caddr, portwidth, old[0], old[1],
|
|
|
+ caddr[0], caddr[1]);
|
|
|
+#endif
|
|
|
+ }
|
|
|
+
|
|
|
+ switch(portwidth) {
|
|
|
+ case 1:
|
|
|
+ manu = caddr[0];
|
|
|
+ manu |= manu<<16;
|
|
|
+ id = caddr[1];
|
|
|
+ break;
|
|
|
+ case 2:
|
|
|
+ manu = saddr[0];
|
|
|
+ manu |= manu<<16;
|
|
|
+ id = saddr[1];
|
|
|
+ id |= id<<16;
|
|
|
+ break;
|
|
|
+ case 4:
|
|
|
+ manu = laddr[0];
|
|
|
+ id = laddr[1];
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ id = manu = -1;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("\n%08lx:%08lx:%08lx\n", base, manu, id);
|
|
|
+ printf("%08lx %08lx %08lx %08lx\n",
|
|
|
+ laddr[0],laddr[1],laddr[2],laddr[3]);
|
|
|
+#endif
|
|
|
+
|
|
|
+ switch (manu) {
|
|
|
+ case AMD_MANUFACT:
|
|
|
+ info->flash_id = FLASH_MAN_AMD;
|
|
|
+ break;
|
|
|
+ case FUJ_MANUFACT:
|
|
|
+ info->flash_id = FLASH_MAN_FUJ;
|
|
|
+ break;
|
|
|
+ case INTEL_MANUFACT:
|
|
|
+ info->flash_id = FLASH_MAN_INTEL;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ printf("Unknown Mfr [%08lx]:%08lx\n", manu, id);
|
|
|
+ info->flash_id = FLASH_UNKNOWN;
|
|
|
+ info->sector_count = 0;
|
|
|
+ info->size = 0;
|
|
|
+ return (0); /* no or unknown flash */
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (id) {
|
|
|
+ case AMD_ID_LV400T:
|
|
|
+ info->flash_id += FLASH_AM400T;
|
|
|
+ info->sector_count = 11;
|
|
|
+ info->size = 0x00100000;
|
|
|
+ info->chipwidth=1;
|
|
|
+ break; /* => 1 MB */
|
|
|
+
|
|
|
+ case AMD_ID_LV400B:
|
|
|
+ info->flash_id += FLASH_AM400B;
|
|
|
+ info->sector_count = 11;
|
|
|
+ info->size = 0x00100000;
|
|
|
+ info->chipwidth=1;
|
|
|
+ break; /* => 1 MB */
|
|
|
+
|
|
|
+ case AMD_ID_LV800T:
|
|
|
+ info->flash_id += FLASH_AM800T;
|
|
|
+ info->sector_count = 19;
|
|
|
+ info->size = 0x00200000;
|
|
|
+ info->chipwidth=1;
|
|
|
+ break; /* => 2 MB */
|
|
|
+
|
|
|
+ case AMD_ID_LV800B:
|
|
|
+ info->flash_id += FLASH_AM800B;
|
|
|
+ info->sector_count = 19;
|
|
|
+ info->size = 0x00200000;
|
|
|
+ info->chipwidth=1;
|
|
|
+ break; /* => 2 MB */
|
|
|
+
|
|
|
+ case AMD_ID_LV160T:
|
|
|
+ info->flash_id += FLASH_AM160T;
|
|
|
+ info->sector_count = 35;
|
|
|
+ info->size = 0x00400000;
|
|
|
+ info->chipwidth=1;
|
|
|
+ break; /* => 4 MB */
|
|
|
+
|
|
|
+ case AMD_ID_LV160B:
|
|
|
+ info->flash_id += FLASH_AM160B;
|
|
|
+ info->sector_count = 35;
|
|
|
+ info->size = 0x00400000;
|
|
|
+ info->chipwidth=1;
|
|
|
+ break; /* => 4 MB */
|
|
|
+#if 0 /* enable when device IDs are available */
|
|
|
+ case AMD_ID_LV320T:
|
|
|
+ info->flash_id += FLASH_AM320T;
|
|
|
+ info->sector_count = 67;
|
|
|
+ info->size = 0x00800000;
|
|
|
+ break; /* => 8 MB */
|
|
|
+
|
|
|
+ case AMD_ID_LV320B:
|
|
|
+ info->flash_id += FLASH_AM320B;
|
|
|
+ info->sector_count = 67;
|
|
|
+ info->size = 0x00800000;
|
|
|
+ break; /* => 8 MB */
|
|
|
+#endif
|
|
|
+ case AMD_ID_LV040B:
|
|
|
+ info->flash_id += FLASH_AM040;
|
|
|
+ info->sector_count = 8;
|
|
|
+ info->size = 0x80000;
|
|
|
+ info->chipwidth=1;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case INTEL_ID_28F640J3A:
|
|
|
+ info->flash_id += FLASH_28F640J3A;
|
|
|
+ info->sector_count = 64;
|
|
|
+ info->size = 128*1024 * 64; /* 128kbytes x 64 blocks */
|
|
|
+ info->chipwidth=2;
|
|
|
+ if(portwidth==4) info->size*=2; /* 2x16 */
|
|
|
+ break;
|
|
|
+
|
|
|
+ case INTEL_ID_28F128J3A:
|
|
|
+ info->flash_id += FLASH_28F128J3A;
|
|
|
+ info->sector_count = 128;
|
|
|
+ info->size = 128*1024 * 128; /* 128kbytes x 128 blocks */
|
|
|
+ info->chipwidth=2;
|
|
|
+ if(portwidth==4) info->size*=2; /* 2x16 */
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ printf("Unknown id %lx:[%lx]\n", manu, id);
|
|
|
+ info->flash_id = FLASH_UNKNOWN;
|
|
|
+ info->chipwidth=1;
|
|
|
+ return (0); /* => no or unknown flash */
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ flash_get_offsets(base, info);
|
|
|
+
|
|
|
+#if 0
|
|
|
+ /* set up sector start address table */
|
|
|
+ if (info->flash_id & FLASH_AM040) {
|
|
|
+ /* this chip has uniformly spaced sectors */
|
|
|
+ for (i = 0; i < info->sector_count; i++)
|
|
|
+ info->start[i] = base + (i * 0x00010000);
|
|
|
+
|
|
|
+ } else if (info->flash_id & FLASH_BTYPE) {
|
|
|
+ /* set sector offsets for bottom boot block type */
|
|
|
+ info->start[0] = base + 0x00000000;
|
|
|
+ info->start[1] = base + 0x00008000;
|
|
|
+ info->start[2] = base + 0x0000C000;
|
|
|
+ info->start[3] = base + 0x00010000;
|
|
|
+ for (i = 4; i < info->sector_count; i++) {
|
|
|
+ info->start[i] = base + (i * 0x00020000) - 0x00060000;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* set sector offsets for top boot block type */
|
|
|
+ i = info->sector_count - 1;
|
|
|
+ info->start[i--] = base + info->size - 0x00008000;
|
|
|
+ info->start[i--] = base + info->size - 0x0000C000;
|
|
|
+ info->start[i--] = base + info->size - 0x00010000;
|
|
|
+ for (; i >= 0; i--) {
|
|
|
+ info->start[i] = base + i * 0x00020000;
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* 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]);
|
|
|
+ saddr = (volatile unsigned short *)(info->start[i]);
|
|
|
+ laddr = (volatile unsigned long *)(info->start[i]);
|
|
|
+ if(portwidth==1)
|
|
|
+ info->protect[i] = caddr[2] & 1;
|
|
|
+ else if(portwidth==2)
|
|
|
+ info->protect[i] = saddr[2] & 1;
|
|
|
+ else
|
|
|
+ info->protect[i] = laddr[2] & 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Prevent writes to uninitialized FLASH.
|
|
|
+ */
|
|
|
+ if (info->flash_id != FLASH_UNKNOWN) {
|
|
|
+ caddr = (volatile unsigned char *)info->start[0];
|
|
|
+
|
|
|
+ flash_cmd(portwidth,caddr,0,0xF0); /* reset bank */
|
|
|
+ }
|
|
|
+
|
|
|
+ return (info->size);
|
|
|
+}
|
|
|
+
|
|
|
+/* TODO: 2x16 unsupported */
|
|
|
+int
|
|
|
+flash_erase (flash_info_t *info, int s_first, int s_last)
|
|
|
+{
|
|
|
+ volatile unsigned char *addr = (char *)(info->start[0]);
|
|
|
+ int flag, prot, sect, l_sect;
|
|
|
+ ulong start, now, last;
|
|
|
+
|
|
|
+ /* TODO: 2x16 unsupported */
|
|
|
+ if(info->portwidth==4) return 1;
|
|
|
+
|
|
|
+ if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1;
|
|
|
+ if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
|
|
|
+ for (sect = s_first; sect<=s_last; sect++) {
|
|
|
+ int sector_size=info->size/info->sector_count;
|
|
|
+ addr = (char *)(info->start[sect]);
|
|
|
+ memset((void *)addr, 0, sector_size);
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((s_first < 0) || (s_first > s_last)) {
|
|
|
+ if (info->flash_id == FLASH_UNKNOWN) {
|
|
|
+ printf ("- missing\n");
|
|
|
+ } else {
|
|
|
+ printf ("- no sectors to erase\n");
|
|
|
+ }
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((info->flash_id&FLASH_VENDMASK) == FLASH_MAN_INTEL) {
|
|
|
+ return flash_erase_intel(info,
|
|
|
+ (unsigned short)s_first,
|
|
|
+ (unsigned short)s_last);
|
|
|
+ }
|
|
|
+
|
|
|
+#if 0
|
|
|
+ if ((info->flash_id == FLASH_UNKNOWN) ||
|
|
|
+ (info->flash_id > FLASH_AMD_COMP)) {
|
|
|
+ printf ("Can't erase unknown flash type %08lx - aborted\n",
|
|
|
+ info->flash_id);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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();
|
|
|
+
|
|
|
+ flash_cmd(info->portwidth,addr,0x555,0xAA);
|
|
|
+ flash_cmd(info->portwidth,addr,0x2AA,0x55);
|
|
|
+ flash_cmd(info->portwidth,addr,0x555,0x80);
|
|
|
+ flash_cmd(info->portwidth,addr,0x555,0xAA);
|
|
|
+ flash_cmd(info->portwidth,addr,0x2AA,0x55);
|
|
|
+
|
|
|
+ /* Start erase on unprotected sectors */
|
|
|
+ for (sect = s_first; sect<=s_last; sect++) {
|
|
|
+ if (info->protect[sect] == 0) { /* not protected */
|
|
|
+ addr = (char *)(info->start[sect]);
|
|
|
+ flash_cmd(info->portwidth,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]);
|
|
|
+ /* broken for 2x16: TODO */
|
|
|
+ while ((addr[0] & 0x80) != 0x80) {
|
|
|
+ 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 = (volatile unsigned char *)info->start[0];
|
|
|
+ flash_cmd(info->portwidth,addr,0,0xf0);
|
|
|
+ flash_cmd(info->portwidth,addr,0,0xf0);
|
|
|
+
|
|
|
+ printf (" done\n");
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ * Copy memory to flash, returns:
|
|
|
+ * 0 - OK
|
|
|
+ * 1 - write timeout
|
|
|
+ * 2 - Flash not erased
|
|
|
+ */
|
|
|
+
|
|
|
+/* broken for 2x16: TODO */
|
|
|
+int
|
|
|
+write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
|
+{
|
|
|
+ ulong cp, wp, data;
|
|
|
+ int i, l, rc;
|
|
|
+
|
|
|
+ if(info->portwidth==4) return 1;
|
|
|
+
|
|
|
+ if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 0;
|
|
|
+ if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
|
|
|
+ memcpy((void *)addr, src, cnt);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ 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
|
|
|
+ */
|
|
|
+/* broken for 2x16: TODO */
|
|
|
+static int
|
|
|
+write_word (flash_info_t *info, ulong dest, ulong data)
|
|
|
+{
|
|
|
+ volatile unsigned char *addr = (char *)(info->start[0]);
|
|
|
+ ulong start;
|
|
|
+ int flag, i;
|
|
|
+
|
|
|
+ if(info->portwidth==4) return 1;
|
|
|
+
|
|
|
+ if((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM) return 1;
|
|
|
+ if((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
|
|
|
+ *(unsigned long *)dest=data;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
|
|
|
+ unsigned short low = data & 0xffff;
|
|
|
+ unsigned short hi = (data >> 16) & 0xffff;
|
|
|
+ int ret = write_word_intel((bank_addr_t)dest, hi);
|
|
|
+
|
|
|
+ if (!ret) ret = write_word_intel((bank_addr_t)(dest+2), low);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Check if Flash is (sufficiently) erased */
|
|
|
+ if ((*((vu_long *)dest) & data) != data) {
|
|
|
+ return (2);
|
|
|
+ }
|
|
|
+ /* Disable interrupts which might cause a timeout here */
|
|
|
+ flag = disable_interrupts();
|
|
|
+
|
|
|
+ /* first, perform an unlock bypass command to speed up flash writes */
|
|
|
+ addr[0x555] = 0xAA;
|
|
|
+ addr[0x2AA] = 0x55;
|
|
|
+ addr[0x555] = 0x20;
|
|
|
+
|
|
|
+ /* write each byte out */
|
|
|
+ for (i = 0; i < 4; i++) {
|
|
|
+ char *data_ch = (char *)&data;
|
|
|
+ addr[0] = 0xA0;
|
|
|
+ *(((char *)dest)+i) = data_ch[i];
|
|
|
+ udelay(10); /* XXX */
|
|
|
+ }
|
|
|
+
|
|
|
+ /* we're done, now do an unlock bypass reset */
|
|
|
+ addr[0] = 0x90;
|
|
|
+ addr[0] = 0x00;
|
|
|
+
|
|
|
+ /* re-enable interrupts if necessary */
|
|
|
+ if (flag)
|
|
|
+ enable_interrupts();
|
|
|
+
|
|
|
+ /* data polling for D7 */
|
|
|
+ start = get_timer (0);
|
|
|
+ while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
|
|
|
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
|
+ return (1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return (0);
|
|
|
+}
|