--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * 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
+ */
+
+#include <common.h>
+
+#define FLASH_BANK_SIZE 0x400000
+#define MAIN_SECT_SIZE 0x20000
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init(void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
+ {
+ ulong flashbase = 0;
+ flash_info[i].flash_id =
+ (INTEL_MANUFACT & FLASH_VENDMASK) |
+ (INTEL_ID_28F128J3 & FLASH_TYPEMASK);
+ flash_info[i].size = FLASH_BANK_SIZE;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ switch (i)
+ {
+ case 0:
+ flashbase = PHYS_FLASH_1;
+ break;
+ case 1:
+ flashbase = PHYS_FLASH_2;
+ break;
+ default:
+ panic("configured to many flash banks!\n");
+ break;
+ }
+ for (j = 0; j < flash_info[i].sector_count; j++)
+ {
+ flash_info[i].start[j] = flashbase + j*MAIN_SECT_SIZE;
+ }
+ size += flash_info[i].size;
+ }
+
+ /* Protect monitor and environment sectors
+ */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
+ &flash_info[0]);
+
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i, j;
+
+ for (j=0; j<CFG_MAX_FLASH_BANKS; j++)
+ {
+ switch (info->flash_id & FLASH_VENDMASK)
+ {
+ case (INTEL_MANUFACT & FLASH_VENDMASK):
+ printf("Intel: ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK)
+ {
+ case (INTEL_ID_28F320J3A & FLASH_TYPEMASK):
+ printf("28F320J3A (32Mbit)\n");
+ break;
+ case (INTEL_ID_28F128J3 & FLASH_TYPEMASK):
+ printf("28F128J3 (128Mbit)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
+
+ printf(" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, 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");
+ info++;
+ }
+
+Done:
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ int flag, prot, sect;
+ int rc = ERR_OK;
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (INTEL_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
+ }
+
+ prot = 0;
+ for (sect=s_first; sect<=s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+ if (prot)
+ return ERR_PROTECTED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ flag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last && !ctrlc(); sect++) {
+
+ printf("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ if (info->protect[sect] == 0) { /* not protected */
+ vu_short *addr = (vu_short *)(info->start[sect]);
+
+ *addr = 0x20; /* erase setup */
+ *addr = 0xD0; /* erase confirm */
+
+ while ((*addr & 0x80) != 0x80) {
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) {
+ *addr = 0xB0; /* suspend erase */
+ *addr = 0xFF; /* reset to read mode */
+ rc = ERR_TIMOUT;
+ goto outahere;
+ }
+ }
+
+ /* clear status register command */
+ *addr = 0x50;
+ /* reset to read mode */
+ *addr = 0xFF;
+ }
+ printf("ok.\n");
+ }
+ if (ctrlc())
+ printf("User Interrupt!\n");
+
+outahere:
+
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked(10000);
+
+ if (flag)
+ enable_interrupts();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+static int write_word (flash_info_t *info, ulong dest, ushort data)
+{
+ vu_short *addr = (vu_short *)dest, val;
+ int rc = ERR_OK;
+ int flag;
+
+ /* Check if Flash is (sufficiently) erased
+ */
+ if ((*addr & data) != data)
+ return ERR_NOT_ERASED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ flag = disable_interrupts();
+
+ /* clear status register command */
+ *addr = 0x50;
+
+ /* program set-up command */
+ *addr = 0x40;
+
+ /* latch address/data */
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ /* wait while polling the status register */
+ while(((val = *addr) & 0x80) != 0x80)
+ {
+ if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) {
+ rc = ERR_TIMOUT;
+ /* suspend program command */
+ *addr = 0xB0;
+ goto outahere;
+ }
+ }
+
+ if(val & 0x1A) { /* check for error */
+ printf("\nFlash write error %02x at address %08lx\n",
+ (int)val, (unsigned long)dest);
+ if(val & (1<<3)) {
+ printf("Voltage range error.\n");
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+ if(val & (1<<1)) {
+ printf("Device protect error.\n");
+ rc = ERR_PROTECTED;
+ goto outahere;
+ }
+ if(val & (1<<4)) {
+ printf("Programming error.\n");
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+
+outahere:
+ /* read array command */
+ *addr = 0xFF;
+
+ if (flag)
+ enable_interrupts();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp;
+ ushort data;
+ int l;
+ int i, rc;
+
+ wp = (addr & ~1); /* 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 << 8);
+ }
+ for (; i<2 && cnt>0; ++i) {
+ data = (data >> 8) | (*src++ << 8);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<2; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 8);
+ }
+
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 2;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 2) {
+ data = *((vu_short*)src);
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 2;
+ wp += 2;
+ cnt -= 2;
+ }
+
+ if (cnt == 0) {
+ return ERR_OK;
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
+ data = (data >> 8) | (*src++ << 8);
+ --cnt;
+ }
+ for (; i<2; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 8);
+ }
+
+ return write_word(info, wp, data);
+}
--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Rolf Offermanns <rof@sysgo.de>
+ *
+ * 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
+ */
+
+#include <common.h>
+
+ulong myflush(void);
+
+
+#define FLASH_BANK_SIZE 0x800000
+#define MAIN_SECT_SIZE 0x20000
+#define PARAM_SECT_SIZE 0x4000
+
+/* puzzle magic for lart
+ * data_*_flash are def'd in flashasm.S
+ */
+
+extern u32 data_from_flash(u32);
+extern u32 data_to_flash(u32);
+
+#define PUZZLE_FROM_FLASH(x) (x)
+#define PUZZLE_TO_FLASH(x) (x)
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+
+#define CMD_READ_ARRAY 0x00FF00FF
+#define CMD_IDENTIFY 0x00900090
+#define CMD_ERASE_SETUP 0x00200020
+#define CMD_ERASE_CONFIRM 0x00D000D0
+#define CMD_PROGRAM 0x00400040
+#define CMD_RESUME 0x00D000D0
+#define CMD_SUSPEND 0x00B000B0
+#define CMD_STATUS_READ 0x00700070
+#define CMD_STATUS_RESET 0x00500050
+
+#define BIT_BUSY 0x00800080
+#define BIT_ERASE_SUSPEND 0x00400040
+#define BIT_ERASE_ERROR 0x00200020
+#define BIT_PROGRAM_ERROR 0x00100010
+#define BIT_VPP_RANGE_ERROR 0x00080008
+#define BIT_PROGRAM_SUSPEND 0x00040004
+#define BIT_PROTECT_ERROR 0x00020002
+#define BIT_UNDEFINED 0x00010001
+
+#define BIT_SEQUENCE_ERROR 0x00300030
+#define BIT_TIMEOUT 0x80000000
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init(void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
+ {
+ ulong flashbase = 0;
+ flash_info[i].flash_id =
+ (INTEL_MANUFACT & FLASH_VENDMASK) |
+ (INTEL_ID_28F160F3B & FLASH_TYPEMASK);
+ flash_info[i].size = FLASH_BANK_SIZE;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ if (i == 0)
+ flashbase = PHYS_FLASH_1;
+ else
+ panic("configured to many flash banks!\n");
+ for (j = 0; j < flash_info[i].sector_count; j++)
+ {
+ if (j <= 7)
+ {
+ flash_info[i].start[j] = flashbase + j * PARAM_SECT_SIZE;
+ }
+ else
+ {
+ flash_info[i].start[j] = flashbase + (j - 7)*MAIN_SECT_SIZE;
+ }
+ }
+ size += flash_info[i].size;
+ }
+
+ /* Protect monitor and environment sectors
+ */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
+ &flash_info[0]);
+
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i;
+
+ switch (info->flash_id & FLASH_VENDMASK)
+ {
+ case (INTEL_MANUFACT & FLASH_VENDMASK):
+ printf("Intel: ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK)
+ {
+ case (INTEL_ID_28F160F3B & FLASH_TYPEMASK):
+ printf("2x 28F160F3B (16Mbit)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
+
+ printf(" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, 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");
+
+Done:
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_error (ulong code)
+{
+ /* Check bit patterns */
+ /* SR.7=0 is busy, SR.7=1 is ready */
+ /* all other flags indicate error on 1 */
+ /* SR.0 is undefined */
+ /* Timeout is our faked flag */
+
+ /* sequence is described in Intel 290644-005 document */
+
+ /* check Timeout */
+ if (code & BIT_TIMEOUT)
+ {
+ printf ("Timeout\n");
+ return ERR_TIMOUT;
+ }
+
+ /* check Busy, SR.7 */
+ if (~code & BIT_BUSY)
+ {
+ printf ("Busy\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Vpp low, SR.3 */
+ if (code & BIT_VPP_RANGE_ERROR)
+ {
+ printf ("Vpp range error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Device Protect Error, SR.1 */
+ if (code & BIT_PROTECT_ERROR)
+ {
+ printf ("Device protect error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Command Seq Error, SR.4 & SR.5 */
+ if (code & BIT_SEQUENCE_ERROR)
+ {
+ printf ("Command seqence error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Block Erase Error, SR.5 */
+ if (code & BIT_ERASE_ERROR)
+ {
+ printf ("Block erase error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Program Error, SR.4 */
+ if (code & BIT_PROGRAM_ERROR)
+ {
+ printf ("Program error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Block Erase Suspended, SR.6 */
+ if (code & BIT_ERASE_SUSPEND)
+ {
+ printf ("Block erase suspended\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Program Suspended, SR.2 */
+ if (code & BIT_PROGRAM_SUSPEND)
+ {
+ printf ("Program suspended\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* OK, no error */
+ return ERR_OK;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ ulong result;
+ int iflag, cflag, prot, sect;
+ int rc = ERR_OK;
+
+ /* first look for protection bits */
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (INTEL_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
+ }
+
+ prot = 0;
+ for (sect=s_first; sect<=s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+ if (prot)
+ return ERR_PROTECTED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
+ {
+ printf("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ if (info->protect[sect] == 0)
+ { /* not protected */
+ vu_long *addr = (vu_long *)(info->start[sect]);
+
+ *addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
+ *addr = PUZZLE_TO_FLASH(CMD_ERASE_SETUP);
+ *addr = PUZZLE_TO_FLASH(CMD_ERASE_CONFIRM);
+
+ /* wait until flash is ready */
+ do
+ {
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ *addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
+ result = BIT_TIMEOUT;
+ break;
+ }
+
+ result = PUZZLE_FROM_FLASH(*addr);
+ } while (~result & BIT_BUSY);
+
+ *addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
+
+ if ((rc = flash_error(result)) != ERR_OK)
+ goto outahere;
+
+ printf("ok.\n");
+ }
+ else /* it was protected */
+ {
+ printf("protected!\n");
+ }
+ }
+
+ if (ctrlc())
+ printf("User Interrupt!\n");
+
+outahere:
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked(10000);
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+volatile static int write_word (flash_info_t *info, ulong dest, ulong data)
+{
+ vu_long *addr = (vu_long *)dest;
+ ulong result;
+ int rc = ERR_OK;
+ int cflag, iflag;
+
+ /* Check if Flash is (sufficiently) erased
+ */
+ result = PUZZLE_FROM_FLASH(*addr);
+ if ((result & data) != data)
+ return ERR_NOT_ERASED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ *addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
+ *addr = PUZZLE_TO_FLASH(CMD_PROGRAM);
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ /* wait until flash is ready */
+ do
+ {
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ *addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
+ result = BIT_TIMEOUT;
+ break;
+ }
+
+ result = PUZZLE_FROM_FLASH(*addr);
+ } while (~result & BIT_BUSY);
+
+ *addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
+
+ rc = flash_error(result);
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int l;
+ int i, 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 << 24);
+ }
+ for (; i<4 && cnt>0; ++i) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 24);
+ }
+
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = *((vu_long*)src);
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 4;
+ wp += 4;
+ cnt -= 4;
+ }
+
+ if (cnt == 0) {
+ return ERR_OK;
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ }
+ for (; i<4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 24);
+ }
+
+ return write_word(info, wp, data);
+}
--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * 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
+ */
+
+#include <common.h>
+
+ulong myflush(void);
+
+
+#define FLASH_BANK_SIZE 0x800000
+#define MAIN_SECT_SIZE 0x20000
+#define PARAM_SECT_SIZE 0x4000
+
+/* puzzle magic for lart
+ * data_*_flash are def'd in flashasm.S
+ */
+
+extern u32 data_from_flash(u32);
+extern u32 data_to_flash(u32);
+
+#define PUZZLE_FROM_FLASH(x) data_from_flash((x))
+#define PUZZLE_TO_FLASH(x) data_to_flash((x))
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+
+#define CMD_READ_ARRAY 0x00FF00FF
+#define CMD_IDENTIFY 0x00900090
+#define CMD_ERASE_SETUP 0x00200020
+#define CMD_ERASE_CONFIRM 0x00D000D0
+#define CMD_PROGRAM 0x00400040
+#define CMD_RESUME 0x00D000D0
+#define CMD_SUSPEND 0x00B000B0
+#define CMD_STATUS_READ 0x00700070
+#define CMD_STATUS_RESET 0x00500050
+
+#define BIT_BUSY 0x00800080
+#define BIT_ERASE_SUSPEND 0x00400040
+#define BIT_ERASE_ERROR 0x00200020
+#define BIT_PROGRAM_ERROR 0x00100010
+#define BIT_VPP_RANGE_ERROR 0x00080008
+#define BIT_PROGRAM_SUSPEND 0x00040004
+#define BIT_PROTECT_ERROR 0x00020002
+#define BIT_UNDEFINED 0x00010001
+
+#define BIT_SEQUENCE_ERROR 0x00300030
+#define BIT_TIMEOUT 0x80000000
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init(void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
+ {
+ ulong flashbase = 0;
+ flash_info[i].flash_id =
+ (INTEL_MANUFACT & FLASH_VENDMASK) |
+ (INTEL_ID_28F160F3B & FLASH_TYPEMASK);
+ flash_info[i].size = FLASH_BANK_SIZE;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ if (i == 0)
+ flashbase = PHYS_FLASH_1;
+ else
+ panic("configured to many flash banks!\n");
+ for (j = 0; j < flash_info[i].sector_count; j++)
+ {
+ if (j <= 7)
+ {
+ flash_info[i].start[j] = flashbase + j * PARAM_SECT_SIZE;
+ }
+ else
+ {
+ flash_info[i].start[j] = flashbase + (j - 7)*MAIN_SECT_SIZE;
+ }
+ }
+ size += flash_info[i].size;
+ }
+
+ /* Protect monitor and environment sectors
+ */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
+ &flash_info[0]);
+
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i;
+
+ switch (info->flash_id & FLASH_VENDMASK)
+ {
+ case (INTEL_MANUFACT & FLASH_VENDMASK):
+ printf("Intel: ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK)
+ {
+ case (INTEL_ID_28F160F3B & FLASH_TYPEMASK):
+ printf("2x 28F160F3B (16Mbit)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
+
+ printf(" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, 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");
+
+Done:
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_error (ulong code)
+{
+ /* Check bit patterns */
+ /* SR.7=0 is busy, SR.7=1 is ready */
+ /* all other flags indicate error on 1 */
+ /* SR.0 is undefined */
+ /* Timeout is our faked flag */
+
+ /* sequence is described in Intel 290644-005 document */
+
+ /* check Timeout */
+ if (code & BIT_TIMEOUT)
+ {
+ printf ("Timeout\n");
+ return ERR_TIMOUT;
+ }
+
+ /* check Busy, SR.7 */
+ if (~code & BIT_BUSY)
+ {
+ printf ("Busy\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Vpp low, SR.3 */
+ if (code & BIT_VPP_RANGE_ERROR)
+ {
+ printf ("Vpp range error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Device Protect Error, SR.1 */
+ if (code & BIT_PROTECT_ERROR)
+ {
+ printf ("Device protect error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Command Seq Error, SR.4 & SR.5 */
+ if (code & BIT_SEQUENCE_ERROR)
+ {
+ printf ("Command seqence error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Block Erase Error, SR.5 */
+ if (code & BIT_ERASE_ERROR)
+ {
+ printf ("Block erase error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Program Error, SR.4 */
+ if (code & BIT_PROGRAM_ERROR)
+ {
+ printf ("Program error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Block Erase Suspended, SR.6 */
+ if (code & BIT_ERASE_SUSPEND)
+ {
+ printf ("Block erase suspended\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Program Suspended, SR.2 */
+ if (code & BIT_PROGRAM_SUSPEND)
+ {
+ printf ("Program suspended\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* OK, no error */
+ return ERR_OK;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ ulong result;
+ int iflag, cflag, prot, sect;
+ int rc = ERR_OK;
+
+ /* first look for protection bits */
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (INTEL_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
+ }
+
+ prot = 0;
+ for (sect=s_first; sect<=s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+ if (prot)
+ return ERR_PROTECTED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
+ {
+ printf("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ if (info->protect[sect] == 0)
+ { /* not protected */
+ vu_long *addr = (vu_long *)(info->start[sect]);
+
+ *addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
+ *addr = PUZZLE_TO_FLASH(CMD_ERASE_SETUP);
+ *addr = PUZZLE_TO_FLASH(CMD_ERASE_CONFIRM);
+
+ /* wait until flash is ready */
+ do
+ {
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ *addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
+ result = BIT_TIMEOUT;
+ break;
+ }
+
+ result = PUZZLE_FROM_FLASH(*addr);
+ } while (~result & BIT_BUSY);
+
+ *addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
+
+ if ((rc = flash_error(result)) != ERR_OK)
+ goto outahere;
+
+ printf("ok.\n");
+ }
+ else /* it was protected */
+ {
+ printf("protected!\n");
+ }
+ }
+
+ if (ctrlc())
+ printf("User Interrupt!\n");
+
+outahere:
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked(10000);
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+volatile static int write_word (flash_info_t *info, ulong dest, ulong data)
+{
+ vu_long *addr = (vu_long *)dest;
+ ulong result;
+ int rc = ERR_OK;
+ int cflag, iflag;
+
+ /* Check if Flash is (sufficiently) erased
+ */
+ result = PUZZLE_FROM_FLASH(*addr);
+ if ((result & data) != data)
+ return ERR_NOT_ERASED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ *addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
+ *addr = PUZZLE_TO_FLASH(CMD_PROGRAM);
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ /* wait until flash is ready */
+ do
+ {
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ *addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
+ result = BIT_TIMEOUT;
+ break;
+ }
+
+ result = PUZZLE_FROM_FLASH(*addr);
+ } while (~result & BIT_BUSY);
+
+ *addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
+
+ rc = flash_error(result);
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int l;
+ int i, 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 << 24);
+ }
+ for (; i<4 && cnt>0; ++i) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 24);
+ }
+
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = *((vu_long*)src);
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 4;
+ wp += 4;
+ cnt -= 4;
+ }
+
+ if (cnt == 0) {
+ return ERR_OK;
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ }
+ for (; i<4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 24);
+ }
+
+ return write_word(info, wp, data);
+}
--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * 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
+ */
+
+#include <common.h>
+
+#define FLASH_BANK_SIZE 0x2000000
+#define MAIN_SECT_SIZE 0x40000 /* 2x16 = 256k per sector */
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init(void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
+ {
+ ulong flashbase = 0;
+ flash_info[i].flash_id =
+ (INTEL_MANUFACT & FLASH_VENDMASK) |
+ (INTEL_ID_28F128J3 & FLASH_TYPEMASK);
+ flash_info[i].size = FLASH_BANK_SIZE;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ switch (i)
+ {
+ case 0:
+ flashbase = PHYS_FLASH_1;
+ break;
+ case 1:
+ flashbase = PHYS_FLASH_2;
+ break;
+ default:
+ panic("configured to many flash banks!\n");
+ break;
+ }
+ for (j = 0; j < flash_info[i].sector_count; j++)
+ {
+ flash_info[i].start[j] = flashbase + j*MAIN_SECT_SIZE;
+ }
+ size += flash_info[i].size;
+ }
+
+ /* Protect monitor and environment sectors
+ */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
+ &flash_info[0]);
+
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i, j;
+
+ for (j=0; j<CFG_MAX_FLASH_BANKS; j++)
+ {
+ switch (info->flash_id & FLASH_VENDMASK)
+ {
+ case (INTEL_MANUFACT & FLASH_VENDMASK):
+ printf("Intel: ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK)
+ {
+ case (INTEL_ID_28F128J3 & FLASH_TYPEMASK):
+ printf("28F128J3 (128Mbit)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
+
+ printf(" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, 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");
+ info++;
+ }
+
+Done:
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ int flag, prot, sect;
+ int rc = ERR_OK;
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (INTEL_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
+ }
+
+ prot = 0;
+ for (sect=s_first; sect<=s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+ if (prot)
+ return ERR_PROTECTED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ flag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last && !ctrlc(); sect++) {
+
+ printf("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ if (info->protect[sect] == 0) { /* not protected */
+ vu_short *addr = (vu_short *)(info->start[sect]);
+
+ *addr = 0x20; /* erase setup */
+ *addr = 0xD0; /* erase confirm */
+
+ while ((*addr & 0x80) != 0x80) {
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) {
+ *addr = 0xB0; /* suspend erase */
+ *addr = 0xFF; /* reset to read mode */
+ rc = ERR_TIMOUT;
+ goto outahere;
+ }
+ }
+
+ /* clear status register command */
+ *addr = 0x50;
+ /* reset to read mode */
+ *addr = 0xFF;
+ }
+ printf("ok.\n");
+ }
+ if (ctrlc())
+ printf("User Interrupt!\n");
+
+outahere:
+
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked(10000);
+
+ if (flag)
+ enable_interrupts();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+static int write_word (flash_info_t *info, ulong dest, ushort data)
+{
+ vu_short *addr = (vu_short *)dest, val;
+ int rc = ERR_OK;
+ int flag;
+
+ /* Check if Flash is (sufficiently) erased
+ */
+ if ((*addr & data) != data)
+ return ERR_NOT_ERASED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ flag = disable_interrupts();
+
+ /* clear status register command */
+ *addr = 0x50;
+
+ /* program set-up command */
+ *addr = 0x40;
+
+ /* latch address/data */
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ /* wait while polling the status register */
+ while(((val = *addr) & 0x80) != 0x80)
+ {
+ if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) {
+ rc = ERR_TIMOUT;
+ /* suspend program command */
+ *addr = 0xB0;
+ goto outahere;
+ }
+ }
+
+ if(val & 0x1A) { /* check for error */
+ printf("\nFlash write error %02x at address %08lx\n",
+ (int)val, (unsigned long)dest);
+ if(val & (1<<3)) {
+ printf("Voltage range error.\n");
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+ if(val & (1<<1)) {
+ printf("Device protect error.\n");
+ rc = ERR_PROTECTED;
+ goto outahere;
+ }
+ if(val & (1<<4)) {
+ printf("Programming error.\n");
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+
+outahere:
+ /* read array command */
+ *addr = 0xFF;
+
+ if (flag)
+ enable_interrupts();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp;
+ ushort data;
+ int l;
+ int i, rc;
+
+ wp = (addr & ~1); /* 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 << 8);
+ }
+ for (; i<2 && cnt>0; ++i) {
+ data = (data >> 8) | (*src++ << 8);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<2; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 8);
+ }
+
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 2;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 2) {
+ data = *((vu_short*)src);
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 2;
+ wp += 2;
+ cnt -= 2;
+ }
+
+ if (cnt == 0) {
+ return ERR_OK;
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
+ data = (data >> 8) | (*src++ << 8);
+ --cnt;
+ }
+ for (; i<2; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 8);
+ }
+
+ return write_word(info, wp, data);
+}
--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * 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
+ */
+
+#include <common.h>
+
+ulong myflush(void);
+
+
+#define FLASH_BANK_SIZE 0x400000 /* 4 MB */
+#define MAIN_SECT_SIZE 0x20000 /* 128 KB */
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+
+#define CMD_READ_ARRAY 0x00F000F0
+#define CMD_UNLOCK1 0x00AA00AA
+#define CMD_UNLOCK2 0x00550055
+#define CMD_ERASE_SETUP 0x00800080
+#define CMD_ERASE_CONFIRM 0x00300030
+#define CMD_PROGRAM 0x00A000A0
+#define CMD_UNLOCK_BYPASS 0x00200020
+
+#define MEM_FLASH_ADDR1 (*(volatile u32 *)(CFG_FLASH_BASE + (0x00000555 << 2)))
+#define MEM_FLASH_ADDR2 (*(volatile u32 *)(CFG_FLASH_BASE + (0x000002AA << 2)))
+
+#define BIT_ERASE_DONE 0x00800080
+#define BIT_RDY_MASK 0x00800080
+#define BIT_PROGRAM_ERROR 0x00200020
+#define BIT_TIMEOUT 0x80000000 /* our flag */
+
+#define READY 1
+#define ERR 2
+#define TMO 4
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init(void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
+ {
+ ulong flashbase = 0;
+ flash_info[i].flash_id =
+ (AMD_MANUFACT & FLASH_VENDMASK) |
+ (AMD_ID_LV160B & FLASH_TYPEMASK);
+ flash_info[i].size = FLASH_BANK_SIZE;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ if (i == 0)
+ flashbase = PHYS_FLASH_1;
+ else
+ panic("configured to many flash banks!\n");
+ for (j = 0; j < flash_info[i].sector_count; j++)
+ {
+
+ if (j <= 3)
+ {
+ /* 1st one is 32 KB */
+ if (j == 0)
+ {
+ flash_info[i].start[j] = flashbase + 0;
+ }
+
+ /* 2nd and 3rd are both 16 KB */
+ if ((j == 1) || (j == 2))
+ {
+ flash_info[i].start[j] = flashbase + 0x8000 + (j-1)*0x4000;
+ }
+
+ /* 4th 64 KB */
+ if (j == 3)
+ {
+ flash_info[i].start[j] = flashbase + 0x10000;
+ }
+ }
+ else
+ {
+ flash_info[i].start[j] = flashbase + (j - 3)*MAIN_SECT_SIZE;
+ }
+ }
+ size += flash_info[i].size;
+ }
+
+ /*
+ * Protect monitor and environment sectors
+ * Inferno is complicated, it's hardware locked
+ */
+#ifdef CONFIG_INFERNO
+ /* first one, 0x00000 to 0x07fff */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE + 0x00000,
+ CFG_FLASH_BASE + 0x08000 - 1,
+ &flash_info[0]);
+
+ /* third to 10th, 0x0c000 - 0xdffff */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE + 0x0c000,
+ CFG_FLASH_BASE + 0xe0000 - 1,
+ &flash_info[0]);
+#else
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
+ &flash_info[0]);
+
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+#endif
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i;
+
+ switch (info->flash_id & FLASH_VENDMASK)
+ {
+ case (AMD_MANUFACT & FLASH_VENDMASK):
+ printf("AMD: ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK)
+ {
+ case (AMD_ID_LV160B & FLASH_TYPEMASK):
+ printf("2x Amd29F160BB (16Mbit)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
+
+ printf(" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, 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");
+
+Done:
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ ulong result;
+ int iflag, cflag, prot, sect;
+ int rc = ERR_OK;
+ int chip1, chip2;
+
+ /* first look for protection bits */
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (AMD_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
+ }
+
+ prot = 0;
+ for (sect=s_first; sect<=s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+ if (prot)
+ return ERR_PROTECTED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
+ {
+ printf("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ if (info->protect[sect] == 0)
+ { /* not protected */
+ vu_long *addr = (vu_long *)(info->start[sect]);
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ *addr = CMD_ERASE_CONFIRM;
+
+ /* wait until flash is ready */
+ chip1 = chip2 = 0;
+
+ do
+ {
+ result = *addr;
+
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+ chip1 = TMO;
+ break;
+ }
+
+ if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
+ chip1 = READY;
+
+ if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
+ chip1 = ERR;
+
+ if (!chip2 && (result >> 16) & BIT_ERASE_DONE)
+ chip2 = READY;
+
+ if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR)
+ chip2 = ERR;
+
+ } while (!chip1 || !chip2);
+
+ MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+
+ if (chip1 == ERR || chip2 == ERR)
+ {
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+ if (chip1 == TMO)
+ {
+ rc = ERR_TIMOUT;
+ goto outahere;
+ }
+
+ printf("ok.\n");
+ }
+ else /* it was protected */
+ {
+ printf("protected!\n");
+ }
+ }
+
+ if (ctrlc())
+ printf("User Interrupt!\n");
+
+outahere:
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked(10000);
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+volatile static int write_word (flash_info_t *info, ulong dest, ulong data)
+{
+ vu_long *addr = (vu_long *)dest;
+ ulong result;
+ int rc = ERR_OK;
+ int cflag, iflag;
+ int chip1, chip2;
+
+ /*
+ * Check if Flash is (sufficiently) erased
+ */
+ result = *addr;
+ if ((result & data) != data)
+ return ERR_NOT_ERASED;
+
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS;
+ *addr = CMD_PROGRAM;
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ /* wait until flash is ready */
+ chip1 = chip2 = 0;
+ do
+ {
+ result = *addr;
+
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ chip1 = ERR | TMO;
+ break;
+ }
+ if (!chip1 && ((result & 0x80) == (data & 0x80)))
+ chip1 = READY;
+
+ if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR))
+ {
+ result = *addr;
+
+ if ((result & 0x80) == (data & 0x80))
+ chip1 = READY;
+ else
+ chip1 = ERR;
+ }
+
+ if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16))))
+ chip2 = READY;
+
+ if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR))
+ {
+ result = *addr;
+
+ if ((result & (0x80 << 16)) == (data & (0x80 << 16)))
+ chip2 = READY;
+ else
+ chip2 = ERR;
+ }
+
+ } while (!chip1 || !chip2);
+
+ *addr = CMD_READ_ARRAY;
+
+ if (chip1 == ERR || chip2 == ERR || *addr != data)
+ rc = ERR_PROG_ERROR;
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int l;
+ int i, 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 << 24);
+ }
+ for (; i<4 && cnt>0; ++i) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 24);
+ }
+
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = *((vu_long*)src);
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 4;
+ wp += 4;
+ cnt -= 4;
+ }
+
+ if (cnt == 0) {
+ return ERR_OK;
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ }
+ for (; i<4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 24);
+ }
+
+ return write_word(info, wp, data);
+}
--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * 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
+ */
+
+/* #define DEBUG */
+
+#include <common.h>
+#include <environment.h>
+
+#define FLASH_BANK_SIZE 0x1000000 /* 2 x 8 MB */
+#define MAIN_SECT_SIZE 0x40000 /* 2 x 128 kB */
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+
+#define CMD_READ_ARRAY 0x00FF00FF
+#define CMD_IDENTIFY 0x00900090
+#define CMD_ERASE_SETUP 0x00200020
+#define CMD_ERASE_CONFIRM 0x00D000D0
+#define CMD_PROGRAM 0x00400040
+#define CMD_RESUME 0x00D000D0
+#define CMD_SUSPEND 0x00B000B0
+#define CMD_STATUS_READ 0x00700070
+#define CMD_STATUS_RESET 0x00500050
+
+#define BIT_BUSY 0x00800080
+#define BIT_ERASE_SUSPEND 0x00400040
+#define BIT_ERASE_ERROR 0x00200020
+#define BIT_PROGRAM_ERROR 0x00100010
+#define BIT_VPP_RANGE_ERROR 0x00080008
+#define BIT_PROGRAM_SUSPEND 0x00040004
+#define BIT_PROTECT_ERROR 0x00020002
+#define BIT_UNDEFINED 0x00010001
+
+#define BIT_SEQUENCE_ERROR 0x00300030
+#define BIT_TIMEOUT 0x80000000
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init (void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+ ulong flashbase = 0;
+
+ flash_info[i].flash_id =
+ (INTEL_MANUFACT & FLASH_VENDMASK) |
+ (INTEL_ID_28F640J3A & FLASH_TYPEMASK);
+ flash_info[i].size = FLASH_BANK_SIZE;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ if (i == 0)
+ flashbase = PHYS_FLASH_1;
+ else
+ panic ("configured too many flash banks!\n");
+ for (j = 0; j < flash_info[i].sector_count; j++) {
+ flash_info[i].start[j] = flashbase;
+
+ /* uniform sector size */
+ flashbase += MAIN_SECT_SIZE;
+ }
+ size += flash_info[i].size;
+ }
+
+ /*
+ * Protect monitor and environment sectors
+ */
+ flash_protect ( FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
+ &flash_info[0]);
+
+ flash_protect ( FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
+
+#ifdef CFG_ENV_ADDR_REDUND
+ flash_protect ( FLAG_PROTECT_SET,
+ CFG_ENV_ADDR_REDUND,
+ CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
+ &flash_info[0]);
+#endif
+
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t * info)
+{
+ int i;
+
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case (INTEL_MANUFACT & FLASH_VENDMASK):
+ printf ("Intel: ");
+ break;
+ default:
+ printf ("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case (INTEL_ID_28F640J3A & FLASH_TYPEMASK):
+ printf ("2x 28F640J3A (64Mbit)\n");
+ break;
+ default:
+ printf ("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
+
+ printf (" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, 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");
+
+ Done:
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_error (ulong code)
+{
+ /* Check bit patterns */
+ /* SR.7=0 is busy, SR.7=1 is ready */
+ /* all other flags indicate error on 1 */
+ /* SR.0 is undefined */
+ /* Timeout is our faked flag */
+
+ /* sequence is described in Intel 290644-005 document */
+
+ /* check Timeout */
+ if (code & BIT_TIMEOUT) {
+ puts ("Timeout\n");
+ return ERR_TIMOUT;
+ }
+
+ /* check Busy, SR.7 */
+ if (~code & BIT_BUSY) {
+ puts ("Busy\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Vpp low, SR.3 */
+ if (code & BIT_VPP_RANGE_ERROR) {
+ puts ("Vpp range error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Device Protect Error, SR.1 */
+ if (code & BIT_PROTECT_ERROR) {
+ puts ("Device protect error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Command Seq Error, SR.4 & SR.5 */
+ if (code & BIT_SEQUENCE_ERROR) {
+ puts ("Command seqence error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Block Erase Error, SR.5 */
+ if (code & BIT_ERASE_ERROR) {
+ puts ("Block erase error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Program Error, SR.4 */
+ if (code & BIT_PROGRAM_ERROR) {
+ puts ("Program error\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Block Erase Suspended, SR.6 */
+ if (code & BIT_ERASE_SUSPEND) {
+ puts ("Block erase suspended\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* check Program Suspended, SR.2 */
+ if (code & BIT_PROGRAM_SUSPEND) {
+ puts ("Program suspended\n");
+ return ERR_PROG_ERROR;
+ }
+
+ /* OK, no error */
+ return ERR_OK;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+ ulong result, result1;
+ int iflag, prot, sect;
+ int rc = ERR_OK;
+
+#ifdef USE_920T_MMU
+ int cflag;
+#endif
+
+ debug ("flash_erase: s_first %d s_last %d\n", s_first, s_last);
+
+ /* first look for protection bits */
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (INTEL_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
+ }
+
+ 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");
+ }
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+#ifdef USE_920T_MMU
+ cflag = dcache_status ();
+ dcache_disable ();
+#endif
+ iflag = disable_interrupts ();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
+
+ debug ("Erasing sector %2d @ %08lX... ",
+ sect, info->start[sect]);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked ();
+
+ if (info->protect[sect] == 0) { /* not protected */
+ vu_long *addr = (vu_long *) (info->start[sect]);
+ ulong bsR7, bsR7_2, bsR5, bsR5_2;
+
+ /* *addr = CMD_STATUS_RESET; */
+ *addr = CMD_ERASE_SETUP;
+ *addr = CMD_ERASE_CONFIRM;
+
+ /* wait until flash is ready */
+ do {
+ /* check timeout */
+ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+ *addr = CMD_STATUS_RESET;
+ result = BIT_TIMEOUT;
+ break;
+ }
+
+ *addr = CMD_STATUS_READ;
+ result = *addr;
+ bsR7 = result & (1 << 7);
+ bsR7_2 = result & (1 << 23);
+ } while (!bsR7 | !bsR7_2);
+
+ *addr = CMD_STATUS_READ;
+ result1 = *addr;
+ bsR5 = result1 & (1 << 5);
+ bsR5_2 = result1 & (1 << 21);
+#ifdef SAMSUNG_FLASH_DEBUG
+ printf ("bsR5 %lx bsR5_2 %lx\n", bsR5, bsR5_2);
+ if (bsR5 != 0 && bsR5_2 != 0)
+ printf ("bsR5 %lx bsR5_2 %lx\n", bsR5, bsR5_2);
+#endif
+
+ *addr = CMD_READ_ARRAY;
+ *addr = CMD_RESUME;
+
+ if ((rc = flash_error (result)) != ERR_OK)
+ goto outahere;
+#if 0
+ printf ("ok.\n");
+ } else { /* it was protected */
+
+ printf ("protected!\n");
+#endif
+ }
+ }
+
+outahere:
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked (10000);
+
+ if (iflag)
+ enable_interrupts ();
+
+#ifdef USE_920T_MMU
+ if (cflag)
+ dcache_enable ();
+#endif
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+volatile static int write_word (flash_info_t * info, ulong dest,
+ ulong data)
+{
+ vu_long *addr = (vu_long *) dest;
+ ulong result;
+ int rc = ERR_OK;
+ int iflag;
+
+#ifdef USE_920T_MMU
+ int cflag;
+#endif
+
+ /*
+ * Check if Flash is (sufficiently) erased
+ */
+ result = *addr;
+ if ((result & data) != data)
+ return ERR_NOT_ERASED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+#ifdef USE_920T_MMU
+ cflag = dcache_status ();
+ dcache_disable ();
+#endif
+ iflag = disable_interrupts ();
+
+ /* *addr = CMD_STATUS_RESET; */
+ *addr = CMD_PROGRAM;
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked ();
+
+ /* wait until flash is ready */
+ do {
+ /* check timeout */
+ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+ *addr = CMD_SUSPEND;
+ result = BIT_TIMEOUT;
+ break;
+ }
+
+ *addr = CMD_STATUS_READ;
+ result = *addr;
+ } while (~result & BIT_BUSY);
+
+ /* *addr = CMD_READ_ARRAY; */
+ *addr = CMD_STATUS_READ;
+ result = *addr;
+
+ rc = flash_error (result);
+
+ if (iflag)
+ enable_interrupts ();
+
+#ifdef USE_920T_MMU
+ if (cflag)
+ dcache_enable ();
+#endif
+ *addr = CMD_READ_ARRAY;
+ *addr = CMD_RESUME;
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int l;
+ int i, 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 << 24);
+ }
+ for (; i < 4 && cnt > 0; ++i) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt == 0 && i < 4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *) cp << 24);
+ }
+
+ if ((rc = write_word (info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = *((vu_long *) src);
+ if ((rc = write_word (info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 4;
+ wp += 4;
+ cnt -= 4;
+ }
+
+ if (cnt == 0) {
+ return ERR_OK;
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
+ data = (data >> 8) | (*src++ << 24);
+ --cnt;
+ }
+ for (; i < 4; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *) cp << 24);
+ }
+
+ return write_word (info, wp, data);
+}
--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * 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
+ */
+
+#include <common.h>
+
+ulong myflush(void);
+
+
+#define FLASH_BANK_SIZE PHYS_FLASH_SIZE
+#define MAIN_SECT_SIZE 0x10000 /* 64 KB */
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+
+#define CMD_READ_ARRAY 0x000000F0
+#define CMD_UNLOCK1 0x000000AA
+#define CMD_UNLOCK2 0x00000055
+#define CMD_ERASE_SETUP 0x00000080
+#define CMD_ERASE_CONFIRM 0x00000030
+#define CMD_PROGRAM 0x000000A0
+#define CMD_UNLOCK_BYPASS 0x00000020
+
+#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CFG_FLASH_BASE + (0x00000555 << 1)))
+#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CFG_FLASH_BASE + (0x000002AA << 1)))
+
+#define BIT_ERASE_DONE 0x00000080
+#define BIT_RDY_MASK 0x00000080
+#define BIT_PROGRAM_ERROR 0x00000020
+#define BIT_TIMEOUT 0x80000000 /* our flag */
+
+#define READY 1
+#define ERR 2
+#define TMO 4
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init(void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
+ {
+ ulong flashbase = 0;
+ flash_info[i].flash_id =
+#if defined(CONFIG_AMD_LV400)
+ (AMD_MANUFACT & FLASH_VENDMASK) |
+ (AMD_ID_LV400B & FLASH_TYPEMASK);
+#elif defined(CONFIG_AMD_LV800)
+ (AMD_MANUFACT & FLASH_VENDMASK) |
+ (AMD_ID_LV800B & FLASH_TYPEMASK);
+#else
+#error "Unknown flash configured"
+#endif
+ flash_info[i].size = FLASH_BANK_SIZE;
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ if (i == 0)
+ flashbase = PHYS_FLASH_1;
+ else
+ panic("configured to many flash banks!\n");
+ for (j = 0; j < flash_info[i].sector_count; j++)
+ {
+ if (j <= 3)
+ {
+ /* 1st one is 16 KB */
+ if (j == 0)
+ {
+ flash_info[i].start[j] = flashbase + 0;
+ }
+
+ /* 2nd and 3rd are both 8 KB */
+ if ((j == 1) || (j == 2))
+ {
+ flash_info[i].start[j] = flashbase + 0x4000 + (j-1)*0x2000;
+ }
+
+ /* 4th 32 KB */
+ if (j == 3)
+ {
+ flash_info[i].start[j] = flashbase + 0x8000;
+ }
+ }
+ else
+ {
+ flash_info[i].start[j] = flashbase + (j - 3)*MAIN_SECT_SIZE;
+ }
+ }
+ size += flash_info[i].size;
+ }
+
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
+ &flash_info[0]);
+
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i;
+
+ switch (info->flash_id & FLASH_VENDMASK)
+ {
+ case (AMD_MANUFACT & FLASH_VENDMASK):
+ printf("AMD: ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK)
+ {
+ case (AMD_ID_LV400B & FLASH_TYPEMASK):
+ printf("1x Amd29LV400BB (4Mbit)\n");
+ break;
+ case (AMD_ID_LV800B & FLASH_TYPEMASK):
+ printf("1x Amd29LV800BB (8Mbit)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
+
+ printf(" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, 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");
+
+Done:
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ ushort result;
+ int iflag, cflag, prot, sect;
+ int rc = ERR_OK;
+ int chip;
+
+ /* first look for protection bits */
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
+ }
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (AMD_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
+ }
+
+ prot = 0;
+ for (sect=s_first; sect<=s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+ if (prot)
+ return ERR_PROTECTED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
+ {
+ printf("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ if (info->protect[sect] == 0)
+ { /* not protected */
+ vu_short *addr = (vu_short *)(info->start[sect]);
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ *addr = CMD_ERASE_CONFIRM;
+
+ /* wait until flash is ready */
+ chip = 0;
+
+ do
+ {
+ result = *addr;
+
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+ chip = TMO;
+ break;
+ }
+
+ if (!chip && (result & 0xFFFF) & BIT_ERASE_DONE)
+ chip = READY;
+
+ if (!chip && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
+ chip = ERR;
+
+ } while (!chip);
+
+ MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+
+ if (chip == ERR)
+ {
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+ if (chip == TMO)
+ {
+ rc = ERR_TIMOUT;
+ goto outahere;
+ }
+
+ printf("ok.\n");
+ }
+ else /* it was protected */
+ {
+ printf("protected!\n");
+ }
+ }
+
+ if (ctrlc())
+ printf("User Interrupt!\n");
+
+outahere:
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked(10000);
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+volatile static int write_hword (flash_info_t *info, ulong dest, ushort data)
+{
+ vu_short *addr = (vu_short *)dest;
+ ushort result;
+ int rc = ERR_OK;
+ int cflag, iflag;
+ int chip;
+
+ /*
+ * Check if Flash is (sufficiently) erased
+ */
+ result = *addr;
+ if ((result & data) != data)
+ return ERR_NOT_ERASED;
+
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status();
+ icache_disable();
+ iflag = disable_interrupts();
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS;
+ *addr = CMD_PROGRAM;
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked();
+
+ /* wait until flash is ready */
+ chip = 0;
+ do
+ {
+ result = *addr;
+
+ /* check timeout */
+ if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
+ {
+ chip = ERR | TMO;
+ break;
+ }
+ if (!chip && ((result & 0x80) == (data & 0x80)))
+ chip = READY;
+
+ if (!chip && ((result & 0xFFFF) & BIT_PROGRAM_ERROR))
+ {
+ result = *addr;
+
+ if ((result & 0x80) == (data & 0x80))
+ chip = READY;
+ else
+ chip = ERR;
+ }
+
+ } while (!chip);
+
+ *addr = CMD_READ_ARRAY;
+
+ if (chip == ERR || *addr != data)
+ rc = ERR_PROG_ERROR;
+
+ if (iflag)
+ enable_interrupts();
+
+ if (cflag)
+ icache_enable();
+
+ return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp;
+ int l;
+ int i, rc;
+ ushort data;
+
+ wp = (addr & ~1); /* 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 << 8);
+ }
+ for (; i<2 && cnt>0; ++i) {
+ data = (data >> 8) | (*src++ << 8);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<2; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 8);
+ }
+
+ if ((rc = write_hword(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 2;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 2) {
+ data = *((vu_short*)src);
+ if ((rc = write_hword(info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 2;
+ wp += 2;
+ cnt -= 2;
+ }
+
+ if (cnt == 0) {
+ return ERR_OK;
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
+ data = (data >> 8) | (*src++ << 8);
+ --cnt;
+ }
+ for (; i<2; ++i, ++cp) {
+ data = (data >> 8) | (*(uchar *)cp << 8);
+ }
+
+ return write_hword(info, wp, data);
+}
projects / u-boot / commitdiff