* Patch by Nicolas Lacressonniere, 11 Jun 2003:

  Modifications for Atmel AT91RM9200DK ARM920T based development kit
  - Add Atmel DataFlash support for reading and writing.
  - Add possibility to boot a Linux from DataFlash with BOOTM command.
  - Add Flash detection on Atmel AT91RM9200DK
    (between Atmel AT49BV1614 and AT49BV1614A flashes)
  - Replace old Ethernet PHY layer functions
  - Change link address

* Patch by Frank Smith, 9 Jun 2003:
  use CRIT_EXCEPTION for machine check on 4xx

* Patch by Detlev Zundel, 13 Jun 2003:
  added implementation of the "carinfo" command in cmd_immap.c

3 files changed, 248 insertions, 254 deletions

diff --git a/drivers/Makefile b/drivers/Makefile
index c1fa419..50fc75a 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -27,9 +27,9 @@ include $(TOPDIR)/config.mk
 
 LIB	= libdrivers.a
 
-OBJS	= 3c589.o 5701rls.o ali512x.o at91rm9200_ether.o \
+OBJS	= 3c589.o 5701rls.o ali512x.o \
 	  bcm570x.o bcm570x_autoneg.o cfb_console.o \
-	  cs8900.o ct69000.o dc2114x.o          \
+	  cs8900.o ct69000.o dataflash.o dc2114x.o          \
 	  e1000.o eepro100.o \
 	  i8042.o i82365.o inca-ip_sw.o \
 	  lan91c96.o             natsemi.o \
@@ -41,7 +41,7 @@ OBJS	= 3c589.o 5701rls.o ali512x.o at91rm9200_ether.o \
 	  ti_pci1410a.o tigon3.o w83c553f.o
 
 ## Disabled for now:
-##	  cs8900.o ct69000.o dc2114x.o ds1722.o \
+##	  cs8900.o ct69000.o dataflash.o dc2114x.o ds1722.o \
 ##	  lan91c96.o mw_eeprom.o natsemi.o \
 ##	  smc91111.o smiLynxEM.o spi_eeprom.o sym53c8xx.o \
 ##
diff --git a/drivers/at91rm9200_ether.c b/drivers/at91rm9200_ether.c
deleted file mode 100644
index f92008e..0000000
--- a/drivers/at91rm9200_ether.c
+++ /dev/null
@@ -1,251 +0,0 @@
-
-#include <common.h>
-#include <command.h>
-#include <asm/io.h>
-#include <net.h>
-
-/* ----- Ethernet Buffer definitions ----- */
-
-typedef struct {
-  unsigned long addr,size;
-} rbf_t;
-
-#define RBF_ADDR      0xfffffffc
-#define RBF_OWNER     (1<<0)
-#define RBF_WRAP      (1<<1)
-#define RBF_BROADCAST (1<<31)
-#define RBF_MULTICAST (1<<30)
-#define RBF_UNICAST   (1<<29)
-#define RBF_EXTERNAL  (1<<28)
-#define RBF_UNKOWN    (1<<27)
-#define RBF_SIZE      0x07ff
-#define RBF_LOCAL4    (1<<26)
-#define RBF_LOCAL3    (1<<25)
-#define RBF_LOCAL2    (1<<24)
-#define RBF_LOCAL1    (1<<23)
-
-#define RBF_FRAMEMAX 10
-#define RBF_FRAMEMEM 0x200000
-#define RBF_FRAMELEN 0x600
-
-#define RBF_FRAMEBTD RBF_FRAMEMEM
-#define RBF_FRAMEBUF (RBF_FRAMEMEM + RBF_FRAMEMAX*sizeof(rbf_t))
-
-/* stolen from mii.h */
-/* Generic MII registers. */
-
-#define MII_BMCR            0x00        /* Basic mode control register */
-#define MII_BMSR            0x01        /* Basic mode status register  */
-#define BMSR_JCD                0x0002  /* Jabber detected             */
-#define BMSR_LSTATUS            0x0004  /* Link status                 */
-#define BMSR_10HALF             0x0800  /* Can do 10mbps, half-duplex  */
-#define BMSR_100FULL            0x4000  /* Can do 100mbps, full-duplex */
-#define BMSR_10FULL             0x1000  /* Can do 10mbps, full-duplex  */
-#define BMSR_100HALF            0x2000  /* Can do 100mbps, half-duplex */
-
-#define MII_STS2_REG	17  /* Davicom specific */
-#define MII_MDINTR_REG	21  /* Davicom specific */
-
-#ifdef CONFIG_DRIVER_ETHER
-
-#if (CONFIG_COMMANDS & CFG_CMD_NET)
-
-AT91PS_EMAC p_mac;
-
-int MII_ReadPhy(unsigned char addr, unsigned short *ret)
-  {
-
-  p_mac->EMAC_MAN = 0x60020000 | (addr << 18);
-  udelay(10000);
-  *ret = (unsigned short)p_mac->EMAC_MAN;
-  return 1;
-  }
-
-
-int MII_GetLinkSpeed(void)
-  {
-  unsigned short stat1, stat2;
-  int ret;
-
-  if (!(ret = MII_ReadPhy(MII_BMSR, &stat1)))
-    return 0;
-
-  if (stat1 & BMSR_JCD)
-    {
-#ifdef DEBUG
-    printf("MII: jabber condition detected\n");
-#endif      /*jabber detected re-read the register*/
-    }
-  if (!(ret = MII_ReadPhy(MII_BMSR, &stat1)))
-    return 0;
-  if (!(stat1 & BMSR_LSTATUS))  /* link status up? */
-    {
-    printf("MII: no Link\n");
-    return 0;
-    }
-
-  if (!(ret = MII_ReadPhy(MII_STS2_REG, &stat2)))
-    return 0;
-
-  if ((stat1 & BMSR_100FULL) && (stat2 & 0x8000) )
-    {
-    /* set MII for 100BaseTX and Full Duplex */
-    p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
-#ifdef DEBUG
-    printf("MII: 100BaseTX and Full Duplex detected\n");
-#endif
-    return 1;
-    }
-
-  else
-    if ((stat1 & BMSR_10FULL) && (stat2 & 0x2000))
-      {
-      /* set MII for 10BaseT and Full Duplex */
-      p_mac->EMAC_CFG = (p_mac->EMAC_CFG & ~(AT91C_EMAC_SPD | AT91C_EMAC_FD));
-#ifdef DEBUG
-        printf("MII: 10BaseT and Full Duplex detected\n");
-#endif
-      return 1;
-      }
-    else
-      if ((stat1 & BMSR_100HALF) && (stat2 & 0x4000))
-        {
-        /* set MII for 100BaseTX and Half Duplex */
-        p_mac->EMAC_CFG = (p_mac->EMAC_CFG & ~(AT91C_EMAC_SPD | AT91C_EMAC_FD));
-#ifdef DEBUG
-          printf("MII: 100BaseTX and Hall Duplex detected\n");
-#endif
-        return 1;
-        }
-      else
-        if ((stat1 & BMSR_10HALF) && (stat2 & 0x1000))
-          {
-          /*set MII for 10BaseT and Half Duplex */
-          p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
-#ifdef DEBUG
-          printf("MII: 10BaseT and Hall Duplex detected\n");
-#endif
-          return 1;
-          }
-
-  return 0;
-  }
-
-
-int MDIO_StartupPhy(void)
-  {
-  int ret;
-
-  if(p_mac->EMAC_SR & AT91C_EMAC_LINK)
-    {
-    printf("MDIO_StartupPhy: no link\n");
-    return 0;
-    };
-
-  p_mac->EMAC_CTL |= AT91C_EMAC_MPE;
-
-  ret = MII_GetLinkSpeed();
-  if (ret == 0)
-    {
-    printf("MDIO_StartupPhy: MII_GetLinkSpeed failed\n");
-    ret = 0;
-    }
-  else
-    {
-    ret = 1;
-    }
-
-  p_mac->EMAC_CTL &= ~AT91C_EMAC_MPE;
-  return ret;
-
-  }
-
-
-rbf_t* rbfdt;
-rbf_t* rbfp;
-
-int eth_init( bd_t *bd )
-  {
-  int ret;
-  int i;
-  p_mac = AT91C_BASE_EMAC;
-
-  *AT91C_PIOA_PDR = AT91C_PA16_EMDIO |
-    AT91C_PA15_EMDC | AT91C_PA14_ERXER | AT91C_PA13_ERX1 | AT91C_PA12_ERX0 |
-    AT91C_PA11_ECRS_ECRSDV | AT91C_PA10_ETX1 | AT91C_PA9_ETX0 | AT91C_PA8_ETXEN |
-    AT91C_PA7_ETXCK_EREFCK; 	/* PIO Disable Register */
-
-  *AT91C_PIOB_PDR = AT91C_PB25_EF100 |
-    AT91C_PB19_ERXCK | AT91C_PB18_ECOL | AT91C_PB17_ERXDV | AT91C_PB16_ERX3 |
-    AT91C_PB15_ERX2 | AT91C_PB14_ETXER | AT91C_PB13_ETX3 | AT91C_PB12_ETX2;
-
-  *AT91C_PIOB_BSR = AT91C_PB25_EF100 |
-    AT91C_PB19_ERXCK | AT91C_PB18_ECOL | AT91C_PB17_ERXDV | AT91C_PB16_ERX3 |
-    AT91C_PB15_ERX2 | AT91C_PB14_ETXER | AT91C_PB13_ETX3 | AT91C_PB12_ETX2;  /* Select B Register */
-  *AT91C_PMC_PCER = 1 << AT91C_ID_EMAC;  /* Peripheral Clock Enable Register */
-  p_mac->EMAC_CFG |= AT91C_EMAC_CSR;  /* Clear statistics */
-
-  rbfdt=(rbf_t *)RBF_FRAMEBTD;
-  for(i = 0; i < RBF_FRAMEMAX; i++)
-    {
-    rbfdt[i].addr=RBF_FRAMEBUF+RBF_FRAMELEN*i;
-    rbfdt[i].size=0;
-    }
-  rbfdt[RBF_FRAMEMAX-1].addr|=RBF_WRAP;
-  rbfp=&rbfdt[0];
-
-  if (!(ret = MDIO_StartupPhy()))
-    {
-    printf("MAC: error during MII initialization\n");
-    return 0;
-    }
-
-  p_mac->EMAC_SA2L = (bd->bi_enetaddr[3] << 24) | (bd->bi_enetaddr[2] << 16)
-    | (bd->bi_enetaddr[1] <<  8) | (bd->bi_enetaddr[0]);
-  p_mac->EMAC_SA2H = (bd->bi_enetaddr[5] <<  8) | (bd->bi_enetaddr[4]);
-
-  p_mac->EMAC_RBQP = (long)(&rbfdt[0]);
-  p_mac->EMAC_RSR &= ~(AT91C_EMAC_RSR_OVR | AT91C_EMAC_REC | AT91C_EMAC_BNA);
-  p_mac->EMAC_CFG = (p_mac->EMAC_CFG | AT91C_EMAC_CAF | AT91C_EMAC_NBC | AT91C_EMAC_RMII) & ~AT91C_EMAC_CLK;
-  p_mac->EMAC_CTL |= AT91C_EMAC_TE | AT91C_EMAC_RE ;
-
-  return 0;
-  }
-
-int eth_send(volatile void *packet, int length)
-  {
-  while(!(p_mac->EMAC_TSR & AT91C_EMAC_BNQ))
-    ;
-  p_mac->EMAC_TAR = (long)packet;
-  p_mac->EMAC_TCR = length;
-  while(p_mac->EMAC_TCR & 0x7ff)
-    ;
-  p_mac->EMAC_TSR |= AT91C_EMAC_COMP;
-  return 0;
-  }
-
-int eth_rx(void)
-  {
-  int size;
-
-  if(!(rbfp->addr & RBF_OWNER))
-    return 0;
-
-  size=rbfp->size & RBF_SIZE;
-  NetReceive((volatile uchar *) (rbfp->addr & RBF_ADDR), size);
-
-  rbfp->addr &= ~RBF_OWNER;
-  if(rbfp->addr & RBF_WRAP)
-    rbfp = &rbfdt[0];
-  else
-    rbfp++;
-
-  p_mac->EMAC_RSR |= AT91C_EMAC_REC;
-
-  return size;
-  }
-
-void eth_halt( void )
- {};
-#endif
-#endif
diff --git a/drivers/dataflash.c b/drivers/dataflash.c
new file mode 100644
index 0000000..a0a4b62
--- /dev/null
+++ b/drivers/dataflash.c
@@ -0,0 +1,245 @@
+/* LowLevel function for ATMEL DataFlash support
+ * Author : Hamid Ikdoumi (Atmel)
+ *
+ * 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>
+#include <config.h>
+#ifdef CONFIG_HAS_DATAFLASH
+#include <asm/hardware.h>
+#include <dataflash.h>
+
+AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
+static AT91S_DataFlash DataFlashInst;
+
+int cs[][CFG_MAX_DATAFLASH_BANKS] = {
+	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},	/* Logical adress, CS */
+	{CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
+};
+
+extern void AT91F_SpiInit (void);
+extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
+extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
+				unsigned long addr,
+				unsigned long size, char *buffer);
+
+
+int AT91F_DataflashInit (void)
+{
+	int i, j;
+	int dfcode;
+
+	AT91F_SpiInit ();
+
+	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
+
+		dataflash_info[i].id = 0;
+		dataflash_info[i].Device.pages_number = 0;
+		dfcode = AT91F_DataflashProbe (cs[i][1], &dataflash_info[i].Desc);
+
+		switch (dfcode) {
+		case AT45DB161:
+			dataflash_info[i].Device.pages_number = 4096;
+			dataflash_info[i].Device.pages_size = 528;
+			dataflash_info[i].Device.page_offset = 10;
+			dataflash_info[i].Device.byte_mask = 0x300;
+			dataflash_info[i].Device.cs = cs[i][1];
+			dataflash_info[i].Desc.DataFlash_state = IDLE;
+			dataflash_info[i].logical_address = cs[i][0];
+			dataflash_info[i].id = dfcode;
+			break;
+
+		case AT45DB321:
+			dataflash_info[i].Device.pages_number = 8192;
+			dataflash_info[i].Device.pages_size = 528;
+			dataflash_info[i].Device.page_offset = 10;
+			dataflash_info[i].Device.byte_mask = 0x300;
+			dataflash_info[i].Device.cs = cs[i][1];
+			dataflash_info[i].Desc.DataFlash_state = IDLE;
+			dataflash_info[i].logical_address = cs[i][0];
+			dataflash_info[i].id = dfcode;
+			break;
+
+		case AT45DB642:
+			dataflash_info[i].Device.pages_number = 8192;
+			dataflash_info[i].Device.pages_size = 1056;
+			dataflash_info[i].Device.page_offset = 11;
+			dataflash_info[i].Device.byte_mask = 0x700;
+			dataflash_info[i].Device.cs = cs[i][1];
+			dataflash_info[i].Desc.DataFlash_state = IDLE;
+			dataflash_info[i].logical_address = cs[i][0];
+			dataflash_info[i].id = dfcode;
+			break;
+
+		default:
+			break;
+		}
+
+		for (j = 0; j < dataflash_info[i].Device.pages_number; j++)
+			dataflash_info[i].protect[j] = FLAG_PROTECT_SET;
+
+	}
+	return (1);
+}
+
+
+
+void dataflash_print_info (void)
+{
+	int i;
+
+	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
+		if (dataflash_info[i].id != 0) {
+			printf ("DataFlash:");
+			switch (dataflash_info[i].id) {
+			case AT45DB161:
+				printf ("AT45DB161\n");
+				break;
+
+			case AT45DB321:
+				printf ("AT45DB321\n");
+				break;
+
+			case AT45DB642:
+				printf ("AT45DB642\n");
+				break;
+			}
+
+			printf ("Nb pages: %6d\n"
+				"Page Size: %6d\n"
+				"Size=%8d bytes\n"
+				"Logical address: 0x%08X\n",
+				(unsigned int) dataflash_info[i].Device.pages_number,
+				(unsigned int) dataflash_info[i].Device.pages_size,
+				(unsigned int) dataflash_info[i].Device.pages_number *
+				dataflash_info[i].Device.pages_size,
+				(unsigned int) dataflash_info[i].logical_address);
+		}
+	}
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_DataflashSelect 					*/
+/* Object              : Select the correct device				*/
+/*------------------------------------------------------------------------------*/
+AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
+										unsigned int *addr)
+{
+	char addr_valid = 0;
+	int i;
+
+	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
+		if ((*addr & 0xFF000000) == dataflash_info[i].logical_address) {
+			addr_valid = 1;
+			break;
+		}
+	if (!addr_valid) {
+		pFlash = (AT91PS_DataFlash) 0;
+		return pFlash;
+	}
+	pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
+	pFlash->pDevice = &(dataflash_info[i].Device);
+	*addr -= dataflash_info[i].logical_address;
+	return (pFlash);
+}
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : addr_dataflash 					*/
+/* Object              : Test if address is valid				*/
+/*------------------------------------------------------------------------------*/
+int addr_dataflash (unsigned long addr)
+{
+	int addr_valid = 0;
+	int i;
+
+	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
+		if ((((int) addr) & 0xFF000000) ==
+			dataflash_info[i].logical_address) {
+			addr_valid = 1;
+			break;
+		}
+	}
+
+	return addr_valid;
+}
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : read_dataflash 					*/
+/* Object              : dataflash memory read					*/
+/*------------------------------------------------------------------------------*/
+int read_dataflash (unsigned long addr, unsigned long size, char *result)
+{
+	int AddrToRead = addr;
+	AT91PS_DataFlash pFlash = &DataFlashInst;
+
+	pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
+	if (pFlash == 0)
+		return -1;
+
+	return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
+}
+
+
+/*-----------------------------------------------------------------------------*/
+/* Function Name       : write_dataflash 				       */
+/* Object              : write a block in dataflash			       */
+/*-----------------------------------------------------------------------------*/
+int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
+		     unsigned long size)
+{
+	extern AT91S_DataFlashStatus AT91F_DataFlashWrite(
+			AT91PS_DataFlash, uchar *, int, int);
+	int AddrToWrite = addr_dest;
+	AT91PS_DataFlash pFlash = &DataFlashInst;
+
+	pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
+	if (AddrToWrite == -1)
+		return -1;
+
+	return AT91F_DataFlashWrite (pFlash, (char *) addr_src, AddrToWrite,
+								 size);
+}
+
+
+void dataflash_perror (int err)
+{
+	switch (err) {
+	case ERR_OK:
+		break;
+	case ERR_TIMOUT:
+		printf ("Timeout writing to DataFlash\n");
+		break;
+	case ERR_PROTECTED:
+		printf ("Can't write to protected DataFlash sectors\n");
+		break;
+	case ERR_INVAL:
+		printf ("Outside available DataFlash\n");
+		break;
+	case ERR_UNKNOWN_FLASH_TYPE:
+		printf ("Unknown Type of DataFlash\n");
+		break;
+	case ERR_PROG_ERROR:
+		printf ("General DataFlash Programming Error\n");
+		break;
+	default:
+		printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
+		break;
+	}
+}
+
+#endif