avr32: add support for EarthLCD Favr-32 board

This patch adds support for the Favr-32 board made by EarthLCD.

This kit, which is also called ezLCD-101 when running with EarthLCD firmware,
has a 10.4" touch screen LCD panel, 16 MB 32-bit SDRAM, 8 MB parallel flash,
Ethernet, audio out, USB device, SD-card slot, USART and various other
connectors for cennecting stuff to SPI, I2C, GPIO, etc.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

MAINTAINERS

@@ -709,6 +709,10 @@ Haavard Skinnemoen <hskinnemoen@atmel.com>
 	ATSTK1006	AT32AP7000
 	ATNGW100	AT32AP7000
 
+Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
+
+	FAVR-32-EZKIT		AT32AP7000
+
 #########################################################################
 # SuperH Systems:							#
 #									#

MAKEALL

@@ -714,6 +714,7 @@ LIST_avr32="		\
 	atstk1004	\
 	atstk1006	\
 	atngw100	\
+	favr-32-ezkit	\
 "
 
 #########################################################################

Makefile

@@ -2911,6 +2911,9 @@ atstk1004_config	:	unconfig
 atstk1006_config	:	unconfig
 	@$(MKCONFIG) $(@:_config=) avr32 at32ap atstk1000 atmel at32ap700x
 
+favr-32-ezkit_config	:	unconfig
+	@$(MKCONFIG) $(@:_config=) avr32 at32ap favr-32-ezkit earthlcd at32ap700x
+
 #========================================================================
 # SH3 (SuperH)
 #========================================================================

board/earthlcd/favr-32-ezkit/Makefile

@@ -0,0 +1,42 @@
+#
+# (C) Copyright 2001-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# Copyright (C) 2008 Atmel Corporation
+#
+# 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	:= $(BOARD).o flash.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+$(LIB): $(obj).depend $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/earthlcd/favr-32-ezkit/config.mk

@@ -0,0 +1,4 @@
+PLATFORM_RELFLAGS	+= -ffunction-sections -fdata-sections
+PLATFORM_LDFLAGS	+= --gc-sections
+TEXT_BASE		= 0x00000000
+LDSCRIPT		= $(obj)board/earthlcd/favr-32-ezkit/u-boot.lds

board/earthlcd/favr-32-ezkit/favr-32-ezkit.c

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * 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/sdram.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/hmatrix.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct sdram_config sdram_config = {
+	/* MT48LC4M32B2P-6 (16 MB) */
+	.data_bits	= SDRAM_DATA_32BIT,
+	.row_bits	= 12,
+	.col_bits	= 8,
+	.bank_bits	= 2,
+	.cas		= 3,
+	.twr		= 2,
+	.trc		= 7,
+	.trp		= 2,
+	.trcd		= 2,
+	.tras		= 5,
+	.txsr		= 5,
+	/* 15.6 us */
+	.refresh_period	= (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
+};
+
+int board_early_init_f(void)
+{
+	/* Enable SDRAM in the EBI mux */
+	hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
+
+	gpio_enable_ebi();
+	gpio_enable_usart3();
+#if defined(CONFIG_MACB)
+	gpio_enable_macb0();
+#endif
+#if defined(CONFIG_MMC)
+	gpio_enable_mmci();
+#endif
+
+	return 0;
+}
+
+phys_size_t initdram(int board_type)
+{
+	unsigned long expected_size;
+	unsigned long actual_size;
+	void *sdram_base;
+
+	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
+
+	expected_size = sdram_init(sdram_base, &sdram_config);
+	actual_size = get_ram_size(sdram_base, expected_size);
+
+	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
+
+	if (expected_size != actual_size)
+		printf("Warning: Only %u of %u MiB SDRAM is working\n",
+				actual_size >> 20, expected_size >> 20);
+
+	return actual_size;
+}
+
+void board_init_info(void)
+{
+	gd->bd->bi_phy_id[0] = 0x01;
+}
+
+#if defined(CONFIG_MACB) && defined(CONFIG_CMD_NET)
+extern int macb_eth_initialize(int id, void *regs, unsigned int phy_addr);
+
+int board_eth_init(bd_t *bi)
+{
+	return macb_eth_initialize(0, (void *)MACB0_BASE, bi->bi_phy_id[0]);
+}
+#endif

board/earthlcd/favr-32-ezkit/flash.c

@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * 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>
+
+#ifdef CONFIG_FAVR32_EZKIT_EXT_FLASH
+#include <asm/cacheflush.h>
+#include <asm/io.h>
+#include <asm/sections.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+flash_info_t flash_info[1];
+
+static void flash_identify(uint16_t *flash, flash_info_t *info)
+{
+	unsigned long flags;
+
+	flags = disable_interrupts();
+
+	dcache_flush_unlocked();
+
+	writew(0xaa, flash + 0x555);
+	writew(0x55, flash + 0xaaa);
+	writew(0x90, flash + 0x555);
+	info->flash_id = readl(flash);
+	writew(0xff, flash);
+
+	readw(flash);
+
+	if (flags)
+		enable_interrupts();
+}
+
+unsigned long flash_init(void)
+{
+	unsigned long addr;
+	unsigned int i;
+
+	flash_info[0].size = CFG_FLASH_SIZE;
+	flash_info[0].sector_count = 135;
+
+	flash_identify(uncached((void *)CFG_FLASH_BASE), &flash_info[0]);
+
+	for (i = 0, addr = 0; i < 8; i++, addr += 0x2000)
+		flash_info[0].start[i] = addr;
+	for (; i < flash_info[0].sector_count; i++, addr += 0x10000)
+		flash_info[0].start[i] = addr;
+
+	return CFG_FLASH_SIZE;
+}
+
+void flash_print_info(flash_info_t *info)
+{
+	printf("Flash: Vendor ID: 0x%02x, Product ID: 0x%02x\n",
+	       info->flash_id >> 16, info->flash_id & 0xffff);
+	printf("Size: %ld MB in %d sectors\n",
+	       info->size >> 10, info->sector_count);
+}
+
+int flash_erase(flash_info_t *info, int s_first, int s_last)
+{
+	unsigned long flags;
+	unsigned long start_time;
+	uint16_t *fb, *sb;
+	unsigned int i;
+	int ret;
+	uint16_t status;
+
+	if ((s_first < 0) || (s_first > s_last)
+	    || (s_last >= info->sector_count)) {
+		puts("Error: first and/or last sector out of range\n");
+		return ERR_INVAL;
+	}
+
+	for (i = s_first; i < s_last; i++)
+		if (info->protect[i]) {
+			printf("Error: sector %d is protected\n", i);
+			return ERR_PROTECTED;
+		}
+
+	fb = (uint16_t *)uncached(info->start[0]);
+
+	dcache_flush_unlocked();
+
+	for (i = s_first; (i <= s_last) && !ctrlc(); i++) {
+		printf("Erasing sector %3d...", i);
+
+		sb = (uint16_t *)uncached(info->start[i]);
+
+		flags = disable_interrupts();
+
+		start_time = get_timer(0);
+
+		/* Unlock sector */
+		writew(0xaa, fb + 0x555);
+		writew(0x70, sb);
+
+		/* Erase sector */
+		writew(0xaa, fb + 0x555);
+		writew(0x55, fb + 0xaaa);
+		writew(0x80, fb + 0x555);
+		writew(0xaa, fb + 0x555);
+		writew(0x55, fb + 0xaaa);
+		writew(0x30, sb);
+
+		/* Wait for completion */
+		ret = ERR_OK;
+		do {
+			/* TODO: Timeout */
+			status = readw(sb);
+		} while ((status != 0xffff) && !(status & 0x28));
+
+		writew(0xf0, fb);
+
+		/*
+		 * Make sure the command actually makes it to the bus
+		 * before we re-enable interrupts.
+		 */
+		readw(fb);
+
+		if (flags)
+			enable_interrupts();
+
+		if (status != 0xffff) {
+			printf("Flash erase error at address 0x%p: 0x%02x\n",
+			       sb, status);
+			ret = ERR_PROG_ERROR;
+			break;
+		}
+	}
+
+	if (ctrlc())
+		printf("User interrupt!\n");
+
+	return ERR_OK;
+}
+
+int write_buff(flash_info_t *info, uchar *src,
+			   ulong addr, ulong count)
+{
+	unsigned long flags;
+	uint16_t *base, *p, *s, *end;
+	uint16_t word, status, status1;
+	int ret = ERR_OK;
+
+	if (addr < info->start[0]
+	    || (addr + count) > (info->start[0] + info->size)
+	    || (addr + count) < addr) {
+		puts("Error: invalid address range\n");
+		return ERR_INVAL;
+	}
+
+	if (addr & 1 || count & 1 || (unsigned int)src & 1) {
+		puts("Error: misaligned source, destination or count\n");
+		return ERR_ALIGN;
+	}
+
+	base = (uint16_t *)uncached(info->start[0]);
+	end = (uint16_t *)uncached(addr + count);
+
+	flags = disable_interrupts();
+
+	dcache_flush_unlocked();
+	sync_write_buffer();
+
+	for (p = (uint16_t *)uncached(addr), s = (uint16_t *)src;
+	     p < end && !ctrlc(); p++, s++) {
+		word = *s;
+
+		writew(0xaa, base + 0x555);
+		writew(0x55, base + 0xaaa);
+		writew(0xa0, base + 0x555);
+		writew(word, p);
+
+		sync_write_buffer();
+
+		/* Wait for completion */
+		status1 = readw(p);
+		do {
+			/* TODO: Timeout */
+			status = status1;
+			status1 = readw(p);
+		} while (((status ^ status1) & 0x40)	/* toggled */
+			 && !(status1 & 0x28));		/* error bits */
+
+		/*
+		 * We'll need to check once again for toggle bit
+		 * because the toggle bit may stop toggling as I/O5
+		 * changes to "1" (ref at49bv642.pdf p9)
+		 */
+		status1 = readw(p);
+		status = readw(p);
+		if ((status ^ status1) & 0x40) {
+			printf("Flash write error at address 0x%p: "
+			       "0x%02x != 0x%02x\n",
+			       p, status,word);
+			ret = ERR_PROG_ERROR;
+			writew(0xf0, base);
+			readw(base);
+			break;
+		}
+
+		writew(0xf0, base);
+		readw(base);
+	}
+
+	if (flags)
+		enable_interrupts();
+
+	return ret;
+}
+
+#endif /* CONFIG_FAVR32_EZKIT_EXT_FLASH */

board/earthlcd/favr-32-ezkit/u-boot.lds

@@ -0,0 +1,71 @@
+/* -*- Fundamental -*-
+ *
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * 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-avr32", "elf32-avr32", "elf32-avr32")
+OUTPUT_ARCH(avr32)
+ENTRY(_start)
+
+SECTIONS
+{
+	. = 0;
+	_text = .;
+	.text : {
+		*(.exception.text)
+		*(.text)
+		*(.text.*)
+	}
+	_etext = .;
+
+	.rodata : {
+		*(.rodata)
+		*(.rodata.*)
+	}
+
+	. = ALIGN(8);
+	_data = .;
+	.data : {
+		*(.data)
+		*(.data.*)
+	}
+
+	. = ALIGN(4);
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : {
+		KEEP(*(.u_boot_cmd))
+	}
+	__u_boot_cmd_end = .;
+
+	. = ALIGN(4);
+	_got = .;
+	.got : {
+		*(.got)
+	}
+	_egot = .;
+
+	. = ALIGN(8);
+	_edata = .;
+
+	.bss (NOLOAD) : {
+		*(.bss)
+		*(.bss.*)
+	}
+	. = ALIGN(8);
+	_end = .;
+}

include/configs/favr-32-ezkit.h

@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * Configuration settings for the Favr-32 EarthLCD LCD kit.
+ *
+ * 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 __CONFIG_H
+#define __CONFIG_H
+
+#include <asm/arch/memory-map.h>
+
+#define CONFIG_AVR32			1
+#define CONFIG_AT32AP			1
+#define CONFIG_AT32AP7000		1
+#define CONFIG_FAVR32_EZKIT		1
+
+#define CONFIG_FAVR32_EZKIT_EXT_FLASH	1
+
+/*
+ * Timer clock frequency. We're using the CPU-internal COUNT register
+ * for this, so this is equivalent to the CPU core clock frequency
+ */
+#define CFG_HZ				1000
+
+/*
+ * Set up the PLL to run at 140 MHz, the CPU to run at the PLL
+ * frequency, the HSB and PBB at 1/2, and the PBA to run at 1/4 the
+ * PLL frequency.
+ * (CFG_OSC0_HZ * CFG_PLL0_MUL) / CFG_PLL0_DIV = PLL MHz
+ */
+#define CONFIG_PLL			1
+#define CFG_POWER_MANAGER		1
+#define CFG_OSC0_HZ			20000000
+#define CFG_PLL0_DIV			1
+#define CFG_PLL0_MUL			7
+#define CFG_PLL0_SUPPRESS_CYCLES	16
+/*
+ * Set the CPU running at:
+ * PLL / (2^CFG_CLKDIV_CPU) = CPU MHz
+ */
+#define CFG_CLKDIV_CPU			0
+/*
+ * Set the HSB running at:
+ * PLL / (2^CFG_CLKDIV_HSB) = HSB MHz
+ */
+#define CFG_CLKDIV_HSB			1
+/*
+ * Set the PBA running at:
+ * PLL / (2^CFG_CLKDIV_PBA) = PBA MHz
+ */
+#define CFG_CLKDIV_PBA			2
+/*
+ * Set the PBB running at:
+ * PLL / (2^CFG_CLKDIV_PBB) = PBB MHz
+ */
+#define CFG_CLKDIV_PBB			1
+
+/*
+ * The PLLOPT register controls the PLL like this:
+ *   icp = PLLOPT<2>
+ *   ivco = PLLOPT<1:0>
+ *
+ * We want icp=1 (default) and ivco=0 (80-160 MHz) or ivco=2 (150-240MHz).
+ */
+#define CFG_PLL0_OPT			0x04
+
+#undef CONFIG_USART0
+#undef CONFIG_USART1
+#undef CONFIG_USART2
+#define CONFIG_USART3			1
+
+/* User serviceable stuff */
+#define CONFIG_DOS_PARTITION		1
+
+#define CONFIG_CMDLINE_TAG		1
+#define CONFIG_SETUP_MEMORY_TAGS	1
+#define CONFIG_INITRD_TAG		1
+
+#define CONFIG_STACKSIZE		(2048)
+
+#define CONFIG_BAUDRATE			115200
+#define CONFIG_BOOTARGS							\
+	"root=/dev/mtdblock1 rootfstype=jffs fbmem=1800k"
+
+#define CONFIG_BOOTCOMMAND						\
+	"fsload; bootm $(fileaddr)"
+
+/*
+ * Only interrupt autoboot if <space> is pressed. Otherwise, garbage
+ * data on the serial line may interrupt the boot sequence.
+ */
+#define CONFIG_BOOTDELAY		1
+#define CONFIG_AUTOBOOT			1
+#define CONFIG_AUTOBOOT_KEYED		1
+#define CONFIG_AUTOBOOT_PROMPT		\
+	"Press SPACE to abort autoboot in %d seconds\n"
+#define CONFIG_AUTOBOOT_DELAY_STR	"d"
+#define CONFIG_AUTOBOOT_STOP_STR	" "
+
+/*
+ * After booting the board for the first time, new ethernet addresses
+ * should be generated and assigned to the environment variables
+ * "ethaddr" and "eth1addr". This is normally done during production.
+ */
+#define CONFIG_OVERWRITE_ETHADDR_ONCE	1
+#define CONFIG_NET_MULTI		1
+
+/*
+ * BOOTP options
+ */
+#define CONFIG_BOOTP_SUBNETMASK
+#define CONFIG_BOOTP_GATEWAY
+
+
+/*
+ * Command line configuration.
+ */
+#include <config_cmd_default.h>
+
+#define CONFIG_CMD_ASKENV
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FAT
+#define CONFIG_CMD_JFFS2
+#define CONFIG_CMD_MMC
+
+#undef CONFIG_CMD_AUTOSCRIPT
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_SETGETDCR
+#undef CONFIG_CMD_XIMG
+
+#define CONFIG_ATMEL_USART		1
+#define CONFIG_MACB			1
+#define CONFIG_PIO2			1
+#define CFG_NR_PIOS			5
+#define CFG_HSDRAMC			1
+#define CONFIG_MMC			1
+#define CONFIG_ATMEL_MCI		1
+
+#define CFG_DCACHE_LINESZ		32
+#define CFG_ICACHE_LINESZ		32
+
+#define CONFIG_NR_DRAM_BANKS		1
+
+/* External flash on Favr-32 */
+#if 0
+#define CFG_FLASH_CFI			1
+#define CFG_FLASH_CFI_DRIVER		1
+#endif
+
+#define CFG_FLASH_BASE			0x00000000
+#define CFG_FLASH_SIZE			0x800000
+#define CFG_MAX_FLASH_BANKS		1
+#define CFG_MAX_FLASH_SECT		135
+
+#define CFG_MONITOR_BASE		CFG_FLASH_BASE
+
+#define CFG_INTRAM_BASE			INTERNAL_SRAM_BASE
+#define CFG_INTRAM_SIZE			INTERNAL_SRAM_SIZE
+#define CFG_SDRAM_BASE			EBI_SDRAM_BASE
+
+#define CFG_ENV_IS_IN_FLASH		1
+#define CFG_ENV_SIZE			65536
+#define CFG_ENV_ADDR			(CFG_FLASH_BASE + CFG_FLASH_SIZE - CFG_ENV_SIZE)
+
+#define CFG_INIT_SP_ADDR		(CFG_INTRAM_BASE + CFG_INTRAM_SIZE)
+
+#define CFG_MALLOC_LEN			(256*1024)
+#define CFG_DMA_ALLOC_LEN		(16384)
+
+/* Allow 4MB for the kernel run-time image */
+#define CFG_LOAD_ADDR			(EBI_SDRAM_BASE + 0x00400000)
+#define CFG_BOOTPARAMS_LEN		(16 * 1024)
+
+/* Other configuration settings that shouldn't have to change all that often */
+#define CFG_PROMPT			"U-Boot> "
+#define CFG_CBSIZE			256
+#define CFG_MAXARGS			16
+#define CFG_PBSIZE			(CFG_CBSIZE + sizeof(CFG_PROMPT) + 16)
+#define CFG_LONGHELP			1
+
+#define CFG_MEMTEST_START		EBI_SDRAM_BASE
+#define CFG_MEMTEST_END			(CFG_MEMTEST_START + 0x700000)
+#define CFG_BAUDRATE_TABLE { 115200, 38400, 19200, 9600, 2400 }
+
+#endif /* __CONFIG_H */