Added initial eNET board support
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
diff --git a/board/eNET/Makefile b/board/eNET/Makefile
new file mode 100644
index 0000000..4813b4b
--- /dev/null
+++ b/board/eNET/Makefile
@@ -0,0 +1,57 @@
+#
+# (C) Copyright 2008
+# Graeme Russ, graeme.russ@gmail.com.
+#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2002
+# Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(BOARD).a
+
+COBJS := eNET.o
+SOBJS := eNET_start16.o eNET_start.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+SOBJS := $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(obj).depend $(OBJS) $(SOBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+ rm -f $(SOBJS) $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/eNET/config.mk b/board/eNET/config.mk
new file mode 100644
index 0000000..a763841
--- /dev/null
+++ b/board/eNET/config.mk
@@ -0,0 +1,24 @@
+#
+# (C) Copyright 2002
+# Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
+#
+# 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
+#
+
+TEXT_BASE = 0x38040000
diff --git a/board/eNET/eNET.c b/board/eNET/eNET.c
new file mode 100644
index 0000000..57dd635
--- /dev/null
+++ b/board/eNET/eNET.c
@@ -0,0 +1,167 @@
+/*
+ * (C) Copyright 2008
+ * Graeme Russ, graeme.russ@gmail.com.
+ *
+ * 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>
+#include <asm/io.h>
+#include <asm/ic/sc520.h>
+
+#ifdef CONFIG_HW_WATCHDOG
+#include <watchdog.h>
+#endif
+
+#include "hardware.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#undef SC520_CDP_DEBUG
+
+#ifdef SC520_CDP_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
+
+void init_sc520_enet (void)
+{
+ /* Set CPU Speed to 100MHz */
+ write_mmcr_byte(SC520_CPUCTL, 1);
+ gd->cpu_clk = 100000000;
+
+ /* wait at least one millisecond */
+ asm("movl $0x2000,%%ecx\n"
+ "wait_loop: pushl %%ecx\n"
+ "popl %%ecx\n"
+ "loop wait_loop\n": : : "ecx");
+
+ /* turn on the SDRAM write buffer */
+ write_mmcr_byte(SC520_DBCTL, 0x11);
+
+ /* turn on the cache and disable write through */
+ asm("movl %%cr0, %%eax\n"
+ "andl $0x9fffffff, %%eax\n"
+ "movl %%eax, %%cr0\n" : : : "eax");
+}
+
+/*
+ * Miscellaneous platform dependent initializations
+ */
+int board_init(void)
+{
+ init_sc520_enet();
+
+ write_mmcr_byte(SC520_GPCSRT, 0x01); /* GP Chip Select Recovery Time */
+ write_mmcr_byte(SC520_GPCSPW, 0x07); /* GP Chip Select Pulse Width */
+ write_mmcr_byte(SC520_GPCSOFF, 0x00); /* GP Chip Select Offset */
+ write_mmcr_byte(SC520_GPRDW, 0x05); /* GP Read pulse width */
+ write_mmcr_byte(SC520_GPRDOFF, 0x01); /* GP Read offset */
+ write_mmcr_byte(SC520_GPWRW, 0x05); /* GP Write pulse width */
+ write_mmcr_byte(SC520_GPWROFF, 0x01); /* GP Write offset */
+
+ write_mmcr_word(SC520_PIODATA15_0, 0x0630); /* PIO15_PIO0 Data */
+ write_mmcr_word(SC520_PIODATA31_16, 0x2000); /* PIO31_PIO16 Data */
+ write_mmcr_word(SC520_PIODIR31_16, 0x2000); /* GPIO Direction */
+ write_mmcr_word(SC520_PIODIR15_0, 0x87b5); /* GPIO Direction */
+ write_mmcr_word(SC520_PIOPFS31_16, 0x0dfe); /* GPIO pin function 31-16 reg */
+ write_mmcr_word(SC520_PIOPFS15_0, 0x200a); /* GPIO pin function 15-0 reg */
+ write_mmcr_byte(SC520_CSPFS, 0x00f8); /* Chip Select Pin Function Select */
+
+ write_mmcr_long(SC520_PAR2, 0x200713f8); /* Uart A (GPCS0, 0x013f8, 8 Bytes) */
+ write_mmcr_long(SC520_PAR3, 0x2c0712f8); /* Uart B (GPCS3, 0x012f8, 8 Bytes) */
+ write_mmcr_long(SC520_PAR4, 0x300711f8); /* Uart C (GPCS4, 0x011f8, 8 Bytes) */
+ write_mmcr_long(SC520_PAR5, 0x340710f8); /* Uart D (GPCS5, 0x010f8, 8 Bytes) */
+ write_mmcr_long(SC520_PAR6, 0xe3ffc000); /* SDRAM (0x00000000, 128MB) */
+ write_mmcr_long(SC520_PAR7, 0xaa3fd000); /* StrataFlash (ROMCS1, 0x10000000, 16MB) */
+ write_mmcr_long(SC520_PAR8, 0xca3fd100); /* StrataFlash (ROMCS2, 0x11000000, 16MB) */
+ write_mmcr_long(SC520_PAR9, 0x4203d900); /* SRAM (GPCS0, 0x19000000, 1MB) */
+ write_mmcr_long(SC520_PAR10, 0x4e03d910); /* SRAM (GPCS3, 0x19100000, 1MB) */
+ write_mmcr_long(SC520_PAR11, 0x50018100); /* DP-RAM (GPCS4, 0x18100000, 4kB) */
+ write_mmcr_long(SC520_PAR12, 0x54020000); /* CFLASH1 (0x200000000, 4kB) */
+ write_mmcr_long(SC520_PAR13, 0x5c020001); /* CFLASH2 (0x200010000, 4kB) */
+/* write_mmcr_long(SC520_PAR14, 0x8bfff800); */ /* BOOTCS at 0x18000000 */
+/* write_mmcr_long(SC520_PAR15, 0x38201000); */ /* LEDs etc (GPCS6, 0x1000, 20 Bytes */
+
+ /* Disable Watchdog */
+ write_mmcr_word(0x0cb0, 0x3333);
+ write_mmcr_word(0x0cb0, 0xcccc);
+ write_mmcr_word(0x0cb0, 0x0000);
+
+ /* Chip Select Configuration */
+ write_mmcr_word(SC520_BOOTCSCTL, 0x0033);
+ write_mmcr_word(SC520_ROMCS1CTL, 0x0615);
+ write_mmcr_word(SC520_ROMCS2CTL, 0x0615);
+
+ write_mmcr_byte(SC520_ADDDECCTL, 0x02);
+ write_mmcr_byte(SC520_UART1CTL, 0x07);
+ write_mmcr_byte(SC520_SYSARBCTL,0x06);
+ write_mmcr_word(SC520_SYSARBMENB, 0x0003);
+
+ /* Crystal is 33.000MHz */
+ gd->bus_clk = 33000000;
+
+ return 0;
+}
+
+int dram_init(void)
+{
+ init_sc520_dram();
+ return 0;
+}
+
+void show_boot_progress(int val)
+{
+ uchar led_mask;
+
+ led_mask = 0x00;
+
+ if (val < 0)
+ led_mask |= LED_ERR_BITMASK;
+
+ led_mask |= (uchar)(val & 0x001f);
+ outb(led_mask, LED_LATCH_ADDRESS);
+}
+
+
+int last_stage_init(void)
+{
+ int minor;
+ int major;
+
+ major = minor = 0;
+
+ printf("Serck Controls eNET\n");
+
+ return 0;
+}
+
+ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
+{
+ if (banknum == 0) { /* non-CFI boot flash */
+ info->portwidth = FLASH_CFI_8BIT;
+ info->chipwidth = FLASH_CFI_BY8;
+ info->interface = FLASH_CFI_X8;
+ return 1;
+ } else
+ return 0;
+}
diff --git a/board/eNET/eNET_start.S b/board/eNET/eNET_start.S
new file mode 100644
index 0000000..1b07d62
--- /dev/null
+++ b/board/eNET/eNET_start.S
@@ -0,0 +1,50 @@
+/*
+ * (C) Copyright 2008
+ * Graeme Russ, graeme.russ@gmail.com.
+ *
+ * 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 "hardware.h"
+
+/* board early intialization */
+.globl early_board_init
+early_board_init:
+ /* No 32-bit board specific initialisation */
+ jmp *%ebp /* return to caller */
+
+.globl show_boot_progress_asm
+show_boot_progress_asm:
+
+ movb %al, %dl /* Create Working Copy */
+ andb $0x80, %dl /* Mask in only Error bit */
+ shrb $0x02, %dl /* Shift Error bit to Error LED */
+ andb $0x0f, %al /* Mask out 'Error' bit */
+ orb %dl, %al /* Mask in ERR LED */
+ movw $LED_LATCH_ADDRESS, %dx
+ outb %al, %dx
+ jmp *%ebp /* return to caller */
+
+.globl cpu_halt_asm
+cpu_halt_asm:
+ movb $0x0f, %al
+ movw $LED_LATCH_ADDRESS, %dx
+ outb %al, %dx
+ hlt
+ jmp cpu_halt_asm
diff --git a/board/eNET/eNET_start16.S b/board/eNET/eNET_start16.S
new file mode 100644
index 0000000..48e4d83
--- /dev/null
+++ b/board/eNET/eNET_start16.S
@@ -0,0 +1,90 @@
+/*
+ * (C) Copyright 2008
+ * Graeme Russ, graeme.russ@gmail.com.
+ *
+ * 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
+ */
+
+/*
+ * 16bit initialization code.
+ * This code have to map the area of the boot flash
+ * that is used by U-boot to its final destination.
+ */
+
+/* #include <asm/ic/sc520_defs.h> */
+
+#include "hardware.h"
+
+.text
+.section .start16, "ax"
+.code16
+.globl board_init16
+board_init16:
+ /* Alias MMCR to 0xdf000 */
+ movw $0xfffc, %dx
+ movl $0x800df0cb, %eax
+ outl %eax, %dx
+
+ /* Set ds to point to MMCR alias */
+ movw $0xdf00, %ax
+ movw %ax, %ds
+
+ /* Map PAR for Boot Flash (BOOTCS, 512kB @ 0x380000000) */
+ movl $0x00c0, %edi /* SC520_PAR14 */
+ movl $0x8bfff800, %eax /* TODO: Check this */
+ movl %eax, (%di)
+
+ /* Map PAR for LED, Hex Switches (GPCS6, 20 Bytes @ 0x1000) */
+ movl $0x00c4, %edi /* SC520_PAR15 */
+ movl $0x38201000, %eax
+ movl %eax, (%di)
+
+ /* Disable SDRAM write buffer */
+ movw $0x0040, %di /* SC520_DBCTL */
+ xorw %ax, %ax
+ movb %al, (%di)
+
+ /* Disabe MMCR alias */
+ movw $0xfffc, %dx
+ movl $0x000000cb, %eax
+ outl %eax, %dx
+
+ /* the return address is stored in bp */
+ jmp *%bp
+
+.section .bios, "ax"
+.code16
+.globl realmode_reset
+realmode_reset:
+ /* Alias MMCR to 0xdf000 */
+ movw $0xfffc, %dx
+ movl $0x800df0cb, %eax
+ outl %eax, %dx
+
+ /* Set ds to point to MMCR alias */
+ movw $0xdf00, %ax
+ movw %ax, %ds
+
+ /* issue software reset thorugh MMCR */
+ movl $0xd72, %edi
+ movb $0x01, %al
+ movb %al, (%di)
+
+1: hlt
+ jmp 1
diff --git a/board/eNET/hardware.h b/board/eNET/hardware.h
new file mode 100644
index 0000000..42474a6
--- /dev/null
+++ b/board/eNET/hardware.h
@@ -0,0 +1,35 @@
+/*
+ * (C) Copyright 2008
+ * Graeme Russ, graeme.russ@gmail.com.
+ *
+ * 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
+ */
+
+#ifndef HARDWARE_H_
+#define HARDWARE_H_
+
+#define LED_LATCH_ADDRESS 0x1002
+#define LED_RUN_BITMASK 0x01
+#define LED_1_BITMASK 0x02
+#define LED_2_BITMASK 0x04
+#define LED_RX_BITMASK 0x08
+#define LED_TX_BITMASK 0x10
+#define LED_ERR_BITMASK 0x20
+
+#endif /* HARDWARE_H_ */
diff --git a/board/eNET/u-boot.lds b/board/eNET/u-boot.lds
new file mode 100644
index 0000000..f3d28ef
--- /dev/null
+++ b/board/eNET/u-boot.lds
@@ -0,0 +1,90 @@
+/*
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
+ *
+ * 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-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+ENTRY(_start)
+
+SECTIONS
+{
+ . = 0x38040000; /* Location of bootcode in flash */
+ .text : { *(.text); }
+
+ . = ALIGN(4);
+ .rodata : { *(.rodata) *(.rodata.str1.1) *(.rodata.str1.32) }
+
+ _i386boot_text_size = SIZEOF(.text) + SIZEOF(.rodata);
+
+ . = 0x03FF0000; /* Ram data segment to use */
+ _i386boot_romdata_dest = ABSOLUTE(.);
+ .data : AT ( LOADADDR(.rodata) + SIZEOF(.rodata) ) { *(.data) }
+ _i386boot_romdata_start = LOADADDR(.data);
+
+ . = ALIGN(4);
+ .got : AT ( LOADADDR(.data) + SIZEOF(.data) ) { *(.got) }
+
+ . = ALIGN(4);
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+ _i386boot_cmd_start = LOADADDR(.u_boot_cmd);
+
+ _i386boot_romdata_size = SIZEOF(.data) + SIZEOF(.got) + SIZEOF(.u_boot_cmd);
+
+ . = ALIGN(4);
+ _i386boot_bss_start = ABSOLUTE(.);
+ .bss (NOLOAD) : { *(.bss) }
+ _i386boot_bss_size = SIZEOF(.bss);
+
+ /* 16bit realmode trampoline code */
+ .realmode 0x7c0 : AT ( LOADADDR(.got) + SIZEOF(.got) + SIZEOF(.u_boot_cmd)) { *(.realmode) }
+
+ _i386boot_realmode = LOADADDR(.realmode);
+ _i386boot_realmode_size = SIZEOF(.realmode);
+
+ /* 16bit BIOS emulation code (just enough to boot Linux) */
+ .bios 0 : AT ( LOADADDR(.realmode) + SIZEOF(.realmode) ) { *(.bios) }
+
+ _i386boot_bios = LOADADDR(.bios);
+ _i386boot_bios_size = SIZEOF(.bios);
+
+ /* The load addresses below assumes that the flash
+ * will be mapped so that 0x387f0000 == 0xffff0000
+ * at reset time
+ *
+ * The fe00 and ff00 offsets of the start32 and start16
+ * segments are arbitrary, the just have to be mapped
+ * at reset and the code have to fit.
+ * The fff0 offset of reset is important, however.
+ */
+
+ . = 0xfffffe00;
+ .start32 : AT (0x3807fe00) { *(.start32); }
+
+ . = 0xf800;
+ .start16 : AT (0x3807f800) { *(.start16); }
+
+ . = 0xfff0;
+ .reset : AT (0x3807fff0) { *(.reset); }
+ _i386boot_end = (LOADADDR(.reset) + SIZEOF(.reset) );
+}