u-boot-1.2.0-edb93xx_support.diff

u-boot 1.2.0 for ep93

+//****************************************************************************
+    .macro SdramCfg
+       //
+    // Initialize the SDRAM Configuration
+    //
+#ifdef CONFIG_EP9301
+       ldr     r0, =(DEVCFG_BANKCOUNT | DEVCFG_SROMLL | DEVCFG_CASLAT_3 | \
+                  DEVCFG_RASTOCAS_3 | DEVCFG_EXTBUSWIDTH)
+#else
+       ldr     r0, =(DEVCFG_BANKCOUNT | DEVCFG_SROMLL | DEVCFG_CASLAT_2 | \
+                  DEVCFG_RASTOCAS_2)
+#endif // CONFIG_EP9301
+    ldr     r1, =0x8006001C
+    str     r0, [r1]
+
+    Delay200
+
+    //
+    // Set the Initialize and MRS bits (issue continuous NOP commands
+    // (INIT & MRS set))
+    //
+    ldr     r0, =(GLOBALCFG_INIT | GLOBALCFG_MRS | GLOBALCFG_CKE)
+    ldr     r1, =0x80060004
+    str     r0, [r1]
+
+    Delay200
+
+    //
+    // Clear the MRS bit to issue a precharge all.
+    //
+    ldr     r0, =(GLOBALCFG_INIT | GLOBALCFG_CKE)
+    str     r0, [r1]
+
+    //
+    // Temporarily set the refresh timer to 0x10.  Make it really low so that
+    // auto refresh cycles are generated. is refreshed.
+    //
+    ldr     r0, =0x10
+    ldr     r1, =0x80060008
+    str     r0, [r1]
+
+    Delay200
+
+#ifdef CONFIG_EP9301
+    ldr     r0, =0x204
+#else
+    ldr     r0, =0x23
+#endif // CONFIG_EP9301
+    ldr     r1, =0x80060008
+    str     r0, [r1]
+
+    //
+    // Select mode register update mode
+    //
+    ldr     r0, =(GLOBALCFG_CKE | GLOBALCFG_MRS)
+    ldr     r1, =0x80060004
+    str     r0, [r1]
+
+// *******************************************************************
+//
+// Program the SDRAM mode register using the row information.
+//
+//       |           |           |           |
+// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+// |13|12|11|10|09|08|07|06|05|04|03|02|01|00|
+// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+//   +---------+------+  +---+--+  +   +--+--+
+//              |             |     |     |
+//          Must Be Zero      |     |     |
+//                            |     |     |
+//                            |     |     |
+//    LTMODE   ---------------+     |     |
+//                                  |     |
+//  Wrap type  ---------------------+     |
+//                                        |
+// CAS Latency ---------------------------+
+//
+// *******************************************************************
+//
+// Row Column mapping for 256Meg X 16 Bits X 2.
+//
+//           B1  B0  A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01 A00
+//
+// Row/Bank  A27 A26 A23 A22 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10
+//
+// Col       A27 A26             AP  A25 A24 A09 A08 A07 A06 A05 A04 A03 A02
+//
+// *******************************************************************
+// Sets all four banks using  - Cas latency 3
+//                            - Wrap type sequential
+//                            - Burst Length 4
+//
+// *******************************************************************
+#ifdef CONFIG_EP9301
+    mov     r1, #0x0006600
+    ldr     r0, [r1]
+#else
+    mov     r1, #0x0008800
+    ldr     r0, [r1]
+
+    ldr     r1, =0x0400000
+    ldr     r0, [r1]
+
+    ldr     r1, =0x0808800
+    ldr     r0, [r1]
+
+    ldr     r1, =0x0c08800
+    ldr     r0, [r1]
+#endif // CONFIG_EP9301
+
+    //
+    // Select mode register update mode
+    //
+    ldr     r0, =GLOBALCFG_CKE
+    ldr     r1, =0x80060004
+    str     r0, [r1]
+
+    .endm
Index: u-boot/board/edb93xx/u-boot.lds
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ u-boot/board/edb93xx/u-boot.lds	2007-09-23 13:40:50.000000000 +0200
@@ -0,0 +1,59 @@
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@xxxxxxxx
+ *
+ * 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
+ *
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+       . = 0x00000000;
+
+       . = ALIGN(4);
+       .text      :
+       {
+               cpu/arm920t/start.o (.text)
+	       . = 0x1000;
+	       LONG(0x53555243)
+               *(.text)
+       }
+
+       . = ALIGN(4);
+       .rodata : { *(.rodata) }
+
+       . = ALIGN(4);
+       .data : { *(.data) }
+
+       . = ALIGN(4);
+       .got : { *(.got) }
+
+       . = .;
+       __u_boot_cmd_start = .;
+       .u_boot_cmd : { *(.u_boot_cmd) }
+       __u_boot_cmd_end = .;
+
+       . = ALIGN(4);
+       __bss_start = .;
+       .bss : { *(.bss) }
+       _end = .;
+}
Index: u-boot/cpu/arm920t/ep93xx/eth.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ u-boot/cpu/arm920t/ep93xx/eth.c	2007-09-23 14:31:45.000000000 +0200
@@ -0,0 +1,929 @@
+/* vim: set ts=8 sw=8 noet:
+ *
+ * Cirrus Logic EP93xx ethernet MAC / MII driver.
+ *
+ * Copyright (C) 2004, 2005
+ * Cory T. Tusar, Videon Central, Inc., <ctusar@xxxxxxxxxxxxxxxxxx>
+ *
+ * Based on the original eth.[ch] Cirrus Logic EP93xx Rev D. Ethernet Driver,
+ * which is
+ *
+ * (C) Copyright 2002 2003
+ * Adam Bezanson, Network Audio Technologies, Inc.
+ * <bezanson@xxxxxxxxxxxxxxxx>
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <command.h>
+#include <common.h>
+#include <ep93xx.h>
+#include <malloc.h>
+#include <miiphy.h>
+#include <net.h>
+#include <linux/types.h>
+
+
+/**
+ * Send an error message to the terminal.
+ */
+#define ERROR(x) \
+do { \
+       char *__foo = strrchr(__FILE__, '/'); \
+       \
+       printf("%s: %d: %s(): ", (__foo == NULL ? __FILE__ : (__foo + 1)), \
+                       __LINE__, __FUNCTION__); \
+       printf x; printf("\n"); \
+} while (0);
+
+
+/**
+ * Send a trace message to the terminal.
+ */
+#if 0
+#define TRACE(x) \
+do { \
+       char *__foo = strrchr(__FILE__, '/'); \
+       \
+       printf("%s: %d: %s(): ", (__foo == NULL ? __FILE__ : (__foo + 1)), \
+               __LINE__, __FUNCTION__); \
+       printf x; printf("\n"); \
+} while (0);
+
+#else
+#define TRACE(x)
+#endif
+
+
+/* -----------------------------------------------------------------------------
+ * EP93xx ethernet MAC functionality
+ */
+#if defined(CONFIG_DRIVER_EP93XX_MAC)
+
+/**
+ * #define this to dump device status and queue info during initialization and
+ * following errors.
+ */
+#undef EP93XX_MAC_DEBUG
+
+/**
+ * Number of descriptor and status entries in our RX queues.
+ */
+#define NUMRXDESC              (8)
+
+/**
+ * Number of descriptor and status entries in our TX queues.
+ */
+#define NUMTXDESC              (1)
+
+/**
+ * 944 = (1024 - 64) - 16, Fifo size - Minframesize - 16 (Chip FACT)
+ */
+#define TXSTARTMAX             (944)
+
+
+/**
+ * Ethernet MAC interface return values for public functions.
+ */
+enum eth_status {
+       ETH_STATUS_SUCCESS = 0,
+       ETH_STATUS_FAILURE = 1,
+};
+
+
+/**
+ * Receive descriptor queue entry
+ */
+struct rx_descriptor_t {
+       union {
+               uint32_t word1;
+
+               struct {
+                       unsigned buffer_address : 32;
+               };
+       };
+
+       union {
+               uint32_t word2;
+
+               struct {
+                       unsigned buffer_length  : 16;
+                       unsigned buffer_index   : 15;
+                       unsigned not_sof        :  1;
+               };
+       };
+} __attribute__((packed));
+
+typedef struct rx_descriptor_t rx_descriptor_t;
+
+
+/**
+ * Receive status queue entry
+ */
+struct rx_status_t {
+       union {
+               uint32_t word1;
+
+               struct {
+                       unsigned                :  8;
+                       unsigned hti            :  6;
+                       unsigned                :  1;
+                       unsigned crci           :  1;
+                       unsigned crce           :  1;
+                       unsigned edata          :  1;
+                       unsigned runt           :  1;
+                       unsigned fe             :  1;
+                       unsigned oe             :  1;
+                       unsigned rx_err         :  1;
+                       unsigned am             :  2;
+                       unsigned                :  4;
+                       unsigned eob            :  1;
+                       unsigned eof            :  1;
+                       unsigned rwe            :  1;
+                       unsigned rfp            :  1;
+               };
+       };
+
+       union {
+               uint32_t word2;
+
+               struct {
+                       unsigned frame_length   : 16;
+                       unsigned buffer_index   : 15;
+                       unsigned rfp            :  1;
+               };
+       };
+} __attribute__((packed));
+
+typedef struct rx_status_t rx_status_t;
+
+
+/**
+ * Transmit descriptor queue entry
+ */
+struct tx_descriptor_t
+{
+       union {
+               uint32_t word1;
+
+               struct {
+                       unsigned buffer_address : 32;
+               };
+       };
+
+       union {
+               uint32_t word2;
+
+               struct {
+                       unsigned buffer_length  : 12;
+                       unsigned                :  3;
+                       unsigned abort_frame    :  1;
+                       unsigned buffer_index   : 15;
+                       unsigned eof            :  1;
+               };
+       };
+} __attribute__((packed));
+
+typedef struct tx_descriptor_t tx_descriptor_t;
+
+
+/**
+ * Transmit status queue entry
+ */
+struct tx_status_t {
+       union {
+               uint32_t word1;
+
+               struct {
+                       unsigned tbi            : 15;
+                       unsigned                :  1;
+                       unsigned ncoll          :  5;
+                       unsigned                :  3;
+                       unsigned ecoll          :  1;
+                       unsigned txu            :  1;