init commit via android 4.4 uboot

6 files changed, 710 insertions, 0 deletions

diff --git a/board/gcplus/Makefile b/board/gcplus/Makefile
new file mode 100755
index 0000000..1954d66
--- /dev/null
+++ b/board/gcplus/Makefile
@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2000
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 2003 (c) MontaVista Software, Inc.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	:= gcplus.o flash.o
+SOBJS	:= lowlevel_init.o
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) crv $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+-include .depend
+
+#########################################################################
diff --git a/board/gcplus/config.mk b/board/gcplus/config.mk
new file mode 100755
index 0000000..57326b8
--- /dev/null
+++ b/board/gcplus/config.mk
@@ -0,0 +1,13 @@
+#
+# ADS GCPlus board with SA1110 cpu
+#
+# The ADS GCPlus has 2 banks of 16 MiB SDRAM
+#
+# We use the ADS GCPlus Linux boot ROM to load U-Boot into SDRAM
+# at c020'0000 and then move ourself to c8f0'0000. Basically, just
+# install the U-Boot binary as you would the Linux zImage and then
+# reap the benfits of more convenient Linux development cycles, i.e.
+# bootp;tftp;bootm, repeat, etc.,.
+#
+
+TEXT_BASE = 0xc8f00000
diff --git a/board/gcplus/flash.c b/board/gcplus/flash.c
new file mode 100755
index 0000000..36d7363
--- /dev/null
+++ b/board/gcplus/flash.c
@@ -0,0 +1,440 @@
+/*
+ * (C) Copyright 2001
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 2003 (c) MontaVista Software, Inc.
+ *
+ * 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 <linux/byteorder/swab.h>
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips */
+
+/* Board support for 1 or 2 flash devices */
+#define FLASH_PORT_WIDTH32
+#undef FLASH_PORT_WIDTH16
+
+#ifdef FLASH_PORT_WIDTH16
+#define FLASH_PORT_WIDTH		ushort
+#define FLASH_PORT_WIDTHV		vu_short
+#define SWAP(x)				__swab16(x)
+#else
+#define FLASH_PORT_WIDTH		ulong
+#define FLASH_PORT_WIDTHV		vu_long
+#define SWAP(x)				__swab32(x)
+#endif
+
+#define FPW				FLASH_PORT_WIDTH
+#define FPWV				FLASH_PORT_WIDTHV
+
+#define mb() __asm__ __volatile__ ("" : : : "memory")
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size(FPW * addr, flash_info_t * info);
+static int write_data(flash_info_t * info, ulong dest, FPW data);
+static void flash_get_offsets(ulong base, flash_info_t * info);
+void inline spin_wheel(void);
+
+/*-----------------------------------------------------------------------
+ */
+
+unsigned long
+flash_init(void)
+{
+	int i;
+	ulong size = 0;
+
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+		switch (i) {
+		case 0:
+			flash_get_size((FPW *) PHYS_FLASH_1, &flash_info[i]);
+			flash_get_offsets(PHYS_FLASH_1, &flash_info[i]);
+			break;
+		default:
+			panic("configured too many flash banks!\n");
+			break;
+		}
+		size += flash_info[i].size;
+	}
+
+	/* Protect monitor and environment sectors
+	 */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_FLASH_BASE,
+		      CFG_FLASH_BASE + monitor_flash_len - 1, &flash_info[0]);
+
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_ENV_ADDR,
+		      CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
+
+	return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void
+flash_get_offsets(ulong base, flash_info_t * info)
+{
+	int i;
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		return;
+	}
+
+	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
+		for (i = 0; i < info->sector_count; i++) {
+			info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
+			info->protect[i] = 0;
+		}
+	}
+}
+
+/*-----------------------------------------------------------------------
+ */
+void
+flash_print_info(flash_info_t * info)
+{
+	int i;
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		printf("missing or unknown FLASH type\n");
+		return;
+	}
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_INTEL:
+		printf("INTEL ");
+		break;
+	default:
+		printf("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_28F128J3A:
+		printf("28F128J3A\n");
+		break;
+	case FLASH_28F640J5:
+		printf("28F640J5\n");
+		break;
+	default:
+		printf("Unknown Chip Type\n");
+		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");
+	return;
+}
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+static ulong
+flash_get_size(FPW * addr, flash_info_t * info)
+{
+	volatile FPW value;
+	/* Write auto select command: read Manufacturer ID */
+	addr[0x5555] = (FPW) 0x00AA00AA;
+	addr[0x2AAA] = (FPW) 0x00550055;
+	addr[0x5555] = (FPW) 0x00900090;
+
+	mb();
+	value = addr[0];
+
+	switch (value) {
+
+	case (FPW) INTEL_MANUFACT:
+		info->flash_id = FLASH_MAN_INTEL;
+		break;
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		addr[0] = (FPW) 0x00FF00FF;	/* restore read mode */
+		return (0);	/* no or unknown flash  */
+	}
+
+	mb();
+	value = addr[1];	/* device ID            */
+	switch (value) {
+	case (FPW) INTEL_ID_28F128J3A:
+		info->flash_id += FLASH_28F128J3A;
+		info->sector_count = 128;
+		info->size = 0x02000000;
+		break;		/* => 16 MB     */
+	case (FPW) INTEL_ID_28F640J5:
+		info->flash_id += FLASH_28F640J5;
+		info->sector_count = 64;
+		info->size = 0x01000000;
+		break;		/* => 16 MB     */
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		break;
+	}
+
+	if (info->sector_count > CFG_MAX_FLASH_SECT) {
+		printf("** ERROR: sector count %d > max (%d) **\n",
+		       info->sector_count, CFG_MAX_FLASH_SECT);
+		info->sector_count = CFG_MAX_FLASH_SECT;
+	}
+
+	addr[0] = (FPW) 0x00FF00FF;	/* restore read mode */
+
+	return (info->size);
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int
+flash_erase(flash_info_t * info, int s_first, int s_last)
+{
+	int flag, prot, sect;
+	ulong type, start, last;
+	int rcode = 0;
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		if (info->flash_id == FLASH_UNKNOWN) {
+			printf("- missing\n");
+		} else {
+			printf("- no sectors to erase\n");
+		}
+		return 1;
+	}
+
+	type = (info->flash_id & FLASH_VENDMASK);
+	if ((type != FLASH_MAN_INTEL)) {
+		printf("Can't erase unknown flash type %08lx - aborted\n",
+		       info->flash_id);
+		return 1;
+	}
+
+	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");
+	}
+
+	start = get_timer(0);
+	last = start;
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect <= s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			FPWV *addr = (FPWV *) (info->start[sect]);
+			FPW status;
+
+			printf("Erasing sector %2d ... ", sect);
+
+			/* arm simple, non interrupt dependent timer */
+			reset_timer_masked();
+
+			*addr = (FPW) 0x00500050;	/* clear status register */
+			*addr = (FPW) 0x00200020;	/* erase setup */
+			*addr = (FPW) 0x00D000D0;	/* erase confirm */
+
+			while (((status =
+				 *addr) & (FPW) 0x00800080) !=
+			       (FPW) 0x00800080) {
+				if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) {
+					printf("Timeout\n");
+					*addr = (FPW) 0x00B000B0;	/* suspend erase         */
+					*addr = (FPW) 0x00FF00FF;	/* reset to read mode */
+					rcode = 1;
+					break;
+				}
+			}
+
+			*addr = (FPW) 0x00500050;	/* clear status register cmd.   */
+			*addr = (FPW) 0x00FF00FF;	/* resest to read mode          */
+
+			printf(" done\n");
+		}
+	}
+	return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 4 - Flash not identified
+ */
+
+int
+write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	ulong cp, wp;
+	FPW data;
+	int count, i, l, rc, port_width;
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		return 4;
+	}
+/* get lower word aligned address */
+#ifdef FLASH_PORT_WIDTH16
+	wp = (addr & ~1);
+	port_width = 2;
+#else
+	wp = (addr & ~3);
+	port_width = 4;
+#endif
+
+	/*
+	 * 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);
+		}
+		for (; i < port_width && cnt > 0; ++i) {
+			data = (data << 8) | *src++;
+			--cnt;
+			++cp;
+		}
+		for (; cnt == 0 && i < port_width; ++i, ++cp) {
+			data = (data << 8) | (*(uchar *) cp);
+		}
+
+		if ((rc = write_data(info, wp, SWAP(data))) != 0) {
+			return (rc);
+		}
+		wp += port_width;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	count = 0;
+	while (cnt >= port_width) {
+		data = 0;
+		for (i = 0; i < port_width; ++i) {
+			data = (data << 8) | *src++;
+		}
+		if ((rc = write_data(info, wp, SWAP(data))) != 0) {
+			return (rc);
+		}
+		wp += port_width;
+		cnt -= port_width;
+		if (count++ > 0x800) {
+			spin_wheel();
+			count = 0;
+		}
+	}
+
+	if (cnt == 0) {
+		return (0);
+	}
+
+	/*
+	 * handle unaligned tail bytes
+	 */
+	data = 0;
+	for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
+		data = (data << 8) | *src++;
+		--cnt;
+	}
+	for (; i < port_width; ++i, ++cp) {
+		data = (data << 8) | (*(uchar *) cp);
+	}
+
+	return (write_data(info, wp, SWAP(data)));
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word or halfword to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int
+write_data(flash_info_t * info, ulong dest, FPW data)
+{
+	FPWV *addr = (FPWV *) dest;
+	ulong status;
+	int flag;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*addr & data) != data) {
+		printf("not erased at %08lX (%lX)\n", (ulong) addr, *addr);
+		return (2);
+	}
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	*addr = (FPW) 0x00400040;	/* write setup */
+	*addr = data;
+
+	/* arm simple, non interrupt dependent timer */
+	reset_timer_masked();
+
+	/* wait while polling the status register */
+	while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
+		if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) {
+			*addr = (FPW) 0x00FF00FF;	/* restore read mode */
+			return (1);
+		}
+	}
+
+	*addr = (FPW) 0x00FF00FF;	/* restore read mode */
+
+	return (0);
+}
+
+void inline
+spin_wheel(void)
+{
+	static int p = 0;
+	static char w[] = "\\/-";
+
+	printf("\010%c", w[p]);
+	(++p == 3) ? (p = 0) : 0;
+}
diff --git a/board/gcplus/gcplus.c b/board/gcplus/gcplus.c
new file mode 100755
index 0000000..261e894
--- /dev/null
+++ b/board/gcplus/gcplus.c
@@ -0,0 +1,73 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * 2003-2004 (c) MontaVista Software, Inc.
+ *
+ * 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 <SA-1100.h>
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+int
+board_init(void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	gd->bd->bi_arch_number = MACH_TYPE_GRAPHICSCLIENT;
+
+	gd->bd->bi_boot_params = 0xc000003c; /* Weird address? */
+
+	/* Most of the ADS GCPlus I/O is connected to Static nCS2.
+	 * So I'm brute forcing nCS2 timiming here for worst case.
+	 */
+	MSC1 &= ~0xFFFF;
+	MSC1 |= 0x8649;
+
+	/* Nothing is connected to Static nCS4 or nCS5. But I'm using
+	 * nCS4 as a paranoia safe guard to force nCS2, nOE; nWE high
+	 * after accessing I/O via (non-VLIO) nCS2. What can I say, I'm
+	 * paranoid and lack decent tools to alleviate my fear. I sure
+	 * do wish I had a logic analyzer. : (
+	 */
+
+	MSC2 =  0xfff9fff9;
+
+	return 0;
+}
+
+int
+dram_init(void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+	gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
+
+	return (0);
+}
diff --git a/board/gcplus/lowlevel_init.S b/board/gcplus/lowlevel_init.S
new file mode 100755
index 0000000..f292c4d
--- /dev/null
+++ b/board/gcplus/lowlevel_init.S
@@ -0,0 +1,77 @@
+/*
+ * Memory Setup stuff - taken from blob memsetup.S
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
+ *                     Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
+ * 2003-2004 (c) MontaVista Software, Inc.
+ *
+ * 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 "config.h"
+#include "version.h"
+
+
+	.globl	lowlevel_init
+lowlevel_init:
+	/* The ADS GC+ for Linux Boot Rom Ver. 1.73 does memory init for us.
+	 * However the darn thing leaves the MMU enabled before handing control
+	 * over to us. So we need to disable the MMU and we use lowlevel_init
+	 * to do it.
+	 */
+
+@ The following code segment was borrowed with gratitude from:
+@	linux-2.4.19-rmk7/arch/arm/boot/compressed/head-sa1100.S
+
+	@ Data cache might be active.
+	@ Be sure to flush kernel binary out of the cache,
+	@ whatever state it is, before it is turned off.
+	@ This is done by fetching through currently executed
+	@ memory to be sure we hit the same cache.
+	bic	r2, pc, #0x1f
+	add	r3, r2, #0x4000		@ 16 kb is quite enough...
+1:	ldr	r0, [r2], #32
+	teq	r2, r3
+	bne	1b
+	mcr	p15, 0, r0, c7, c10, 4	@ drain WB
+	mcr	p15, 0, r0, c7, c7, 0	@ flush I & D caches
+
+	@ disabling MMU and caches
+	mrc	p15, 0, r0, c1, c0, 0	@ read control reg
+	bic	r0, r0, #0x0d		@ clear WB, DC, MMU
+	bic	r0, r0, #0x1000		@ clear Icache
+	mcr	p15, 0, r0, c1, c0, 0
+
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	b	2f
+2:
+	nop
+	nop
+	nop
+	nop
+	nop
+
+
+	mov	pc, lr
diff --git a/board/gcplus/u-boot.lds b/board/gcplus/u-boot.lds
new file mode 100755
index 0000000..9900a57
--- /dev/null
+++ b/board/gcplus/u-boot.lds
@@ -0,0 +1,58 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * 2003 (c) MontaVista Software, Inc.
+ *
+ * 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/sa1100/start.o	(.text)
+		*(.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 = .;
+}