* Patch by Rick Bronson, 16 Mar 2003:

  Add support for Atmel AT91RM9200DK w/NAND

* Patches by Robert Schwebel, 19 Mar 2003:
  - use arm-linux-gcc as default compiler for ARM
  - fix i2c fixup code
  - fix missing baudrate setting
  - added $loadaddr / CFG_LOAD_ADDR support to loadb
  - moved "ignoring trailing characters" _before_ u-boot wants to
    print out diagnostics messages; removes bogus characters at the
    end of transmission

* Patch by John Zhan, 18 Mar 2003:
  Add support for SinoVee Microsystems SC8xx boards

* Patch by Rolf Offermanns, 21 Mar 2003:
  ported the dnp1110 related changes from the current armboot cvs to
  current u-boot cvs. smc91111 does not work. problem marked in
  smc91111.c, grep for "FIXME".

* Patch by Brian Auld, 25 Mar 2003:
  Add support for STM flash chips on ebony board

 * Add PCI support for MPC8250 Boards (PM825 module)

 * Patch by Stefan Roese, 25 Mar 2003:

1 files changed, 397 insertions, 0 deletions

diff --git a/board/at91rm9200dk/flash.c b/board/at91rm9200dk/flash.c
new file mode 100644
index 0000000..6497f11
--- /dev/null
+++ b/board/at91rm9200dk/flash.c
@@ -0,0 +1,397 @@
+/*
+ * (C) Copyright 2002
+ * Lineo, Inc. <www.lineo.com>
+ * Bernhard Kuhn <bkuhn@lineo.com>
+ *
+ * (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 0x200000	/* 2 MB */
+#define MAIN_SECT_SIZE  0x10000		/* 64 KB */
+
+flash_info_t    flash_info[CFG_MAX_FLASH_BANKS];
+
+
+#define CMD_READ_ARRAY		0x00F0
+#define CMD_UNLOCK1		0x00AA
+#define CMD_UNLOCK2		0x0055
+#define CMD_ERASE_SETUP		0x0080
+#define CMD_ERASE_CONFIRM	0x0030
+#define CMD_PROGRAM		0x00A0
+#define CMD_UNLOCK_BYPASS	0x0020
+
+#define MEM_FLASH_ADDR1		(*(volatile u16 *)(CFG_FLASH_BASE + (0x00005555<<1)))
+#define MEM_FLASH_ADDR2		(*(volatile u16 *)(CFG_FLASH_BASE + (0x00002AAA<<1)))
+
+#define BIT_ERASE_DONE		0x0080
+#define BIT_RDY_MASK		0x0080
+#define BIT_PROGRAM_ERROR	0x0020
+#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 =
+	  (ATM_MANUFACT & FLASH_VENDMASK) |
+	  (ATM_ID_BV1614 & 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 <= 9)
+	    {
+		/* 1st to 8th are 8 KB */
+		if (j <= 7)
+		{
+		    flash_info[i].start[j] = flashbase + j*0x2000;
+		}
+
+		/* 9th and 10th are both 32 KB */
+		if ((j == 8) || (j == 9))
+		{
+			flash_info[i].start[j] = flashbase + 0x10000 + (j-8)*0x8000;
+		}
+	    }
+	    else
+	    {
+		flash_info[i].start[j] = flashbase + (j-8)*MAIN_SECT_SIZE;
+	    }
+	}
+	size += flash_info[i].size;
+    }
+
+    flash_protect(FLAG_PROTECT_SET,
+		  CFG_FLASH_BASE,
+		  CFG_ENV_ADDR - 1,
+		  &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 (ATM_MANUFACT & FLASH_VENDMASK):
+	printf("Atmel: ");
+	break;
+    default:
+	printf("Unknown Vendor ");
+	break;
+    }
+
+    switch (info->flash_id & FLASH_TYPEMASK)
+    {
+    case (ATM_ID_BV1614 & FLASH_TYPEMASK):
+	printf("AT49BV1614 (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;
+
+    /* 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) !=
+	(ATM_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 */
+	    volatile u16 *addr = (volatile u16 *)(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 = 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;
+
+	    }  while (!chip1);
+
+	    MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+
+	    if (chip1 == 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)
+{
+    volatile u16 *addr = (volatile u16 *)dest;
+    ulong result;
+    int rc = ERR_OK;
+    int cflag, iflag;
+    int chip1;
+
+    /*
+     * 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_PROGRAM;
+    *addr = data;
+
+    /* arm simple, non interrupt dependent timer */
+    reset_timer_masked();
+
+    /* wait until flash is ready */
+    chip1 = 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;
+
+    }  while (!chip1);
+
+    *addr = CMD_READ_ARRAY;
+
+    if (chip1 == 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 wp, data;
+    int rc;
+
+    if(addr & 1) {
+      printf("unaligned destination not supported\n");
+      return ERR_ALIGN;
+    };
+
+    if((int)src & 1) {
+      printf("unaligned source not supported\n");
+      return ERR_ALIGN;
+    };
+
+    wp = addr;
+
+    while (cnt >= 2) {
+	data = *((volatile u16*)src);
+	if ((rc = write_word(info, wp, data)) != 0) {
+	    return (rc);
+	}
+	src += 2;
+	wp  += 2;
+	cnt -= 2;
+    }
+
+    if(cnt == 1) {
+      data =  (*((volatile u8*)src)) | (*((volatile u8*)(wp+1)) << 8);
+	if ((rc = write_word(info, wp, data)) != 0) {
+	    return (rc);
+	}
+	src += 1;
+	wp  += 1;
+	cnt -= 1;
+    };
+
+    return ERR_OK;
+}