Add support for the hammerhead (AVR32) board

The Hammerhead platform is built around a AVR32 32-bit microcontroller
from Atmel.  It offers versatile peripherals, such as ethernet, usb
device, usb host etc.

The board also incooperates a power supply and is a Power over Ethernet
(PoE) Powered Device (PD).

Additonally, a Cyclone III FPGA from Altera is integrated on the board.
The FPGA is mapped into the 32-bit AVR memory bus. The FPGA offers two
DDR2 SDRAM interfaces, which will cover even the most exceptional need
of memory bandwidth. Together with the onboard video decoder the board
is ready for video processing.

For more information see: http:///www.miromico.com/hammerhead

Signed-off-by: Julien May <mailinglist@miromico.ch>
[haavard.skinnemoen@atmel.com: various small fixes and adaptions]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

MAINTAINERS

@@ -709,6 +709,11 @@ Haavard Skinnemoen <hskinnemoen@atmel.com>
 	ATSTK1006	AT32AP7000
 	ATNGW100	AT32AP7000
 
+Alex Raimondi <alex.raimondi@miromico.ch>
+Julien May <julien.may@miromico.ch>
+
+	HAMMERHEAD		AT32AP7000
+
 #########################################################################
 # SuperH Systems:							#
 #									#

MAKEALL

@@ -714,6 +714,7 @@ LIST_avr32="		\
 	atstk1004	\
 	atstk1006	\
 	atngw100	\
+	hammerhead	\
 "
 
 #########################################################################

Makefile

@@ -2911,6 +2911,9 @@ atstk1004_config	:	unconfig
 atstk1006_config	:	unconfig
 	@$(MKCONFIG) $(@:_config=) avr32 at32ap atstk1000 atmel at32ap700x
 
+hammerhead_config	:	unconfig
+	@$(MKCONFIG) $(@:_config=) avr32 at32ap hammerhead miromico at32ap700x
+
 #========================================================================
 # SH3 (SuperH)
 #========================================================================

board/miromico/hammerhead/Makefile

@@ -0,0 +1,40 @@
+#
+# Copyright (C) 2008 Miromico AG
+#
+# 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
+
+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/miromico/hammerhead/config.mk

@@ -0,0 +1,3 @@
+TEXT_BASE		= 0x00000000
+PLATFORM_RELFLAGS	+= -ffunction-sections -fdata-sections
+PLATFORM_LDFLAGS	+= --gc-sections

board/miromico/hammerhead/hammerhead.c

@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2008 Miromico AG
+ *
+ * Mostly copied form atmel ATNGW100 sources
+ *
+ * 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 "../cpu/at32ap/at32ap700x/sm.h"
+
+#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>
+#include <asm/arch/memory-map.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct sdram_config sdram_config = {
+	.data_bits	= SDRAM_DATA_32BIT,
+	.row_bits	= 13,
+	.col_bits	= 9,
+	.bank_bits	= 2,
+	.cas		= 3,
+	.twr		= 2,
+	.trc		= 7,
+	.trp		= 2,
+	.trcd		= 2,
+	.tras		= 5,
+	.txsr		= 5,
+	/* 7.81 us */
+	.refresh_period	= (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
+};
+
+extern int macb_eth_initialize(int id, void *regs, unsigned int phy_addr);
+
+#ifdef CONFIG_CMD_NET
+int board_eth_init(bd_t *bis)
+{
+	return macb_eth_initialize(0, (void *)MACB0_BASE, bis->bi_phy_id[0]);
+}
+#endif
+
+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_usart1();
+
+#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 %lu of %lu 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;
+}
+
+void gclk_init(void)
+{
+	/* Hammerhead boards uses GCLK3 as 25MHz output to ethernet PHY */
+
+	/* Select GCLK3 peripheral function */
+	gpio_select_periph_A(GPIO_PIN_PB29, 0);
+
+	/* Enable GCLK3 with no input divider, from OSC0 (crystal) */
+	sm_writel(PM_GCCTRL(3), SM_BIT(CEN));
+}

board/miromico/hammerhead/u-boot.lds

@@ -0,0 +1,73 @@
+/* -*- Fundamental -*-
+ *
+ * Copyright (C) 2005-2006 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 : {
+		*(.bss)
+		*(.bss.*)
+	}
+	. = ALIGN(8);
+	_end = .;
+}

cpu/at32ap/at32ap700x/sm.h

@@ -21,7 +21,7 @@
 #define SM_PM_IMR				0x0048
 #define SM_PM_ISR				0x004c
 #define SM_PM_ICR				0x0050
-#define SM_PM_GCCTRL				0x0060
+#define SM_PM_GCCTRL(x)				(0x0060 + 4 * x)
 #define SM_RTC_CTRL				0x0080
 #define SM_RTC_VAL				0x0084
 #define SM_RTC_TOP				0x0088

cpu/at32ap/cpu.c

@@ -65,6 +65,9 @@ int cpu_init(void)
 	sysreg_write(EVBA, (unsigned long)&_evba);
 	asm volatile("csrf	%0" : : "i"(SYSREG_EM_OFFSET));
 
+	if(gclk_init)
+		gclk_init();
+
 	return 0;
 }
 

include/asm-avr32/arch-at32ap700x/clk.h

@@ -82,6 +82,7 @@ static inline unsigned long get_spi_clk_rate(unsigned int dev_id)
 #endif
 
 extern void clk_init(void);
+extern void gclk_init(void) __attribute__((weak));
 
 /* Board code may need the SDRAM base clock as a compile-time constant */
 #define SDRAMC_BUS_HZ	(MAIN_CLK_RATE >> CFG_CLKDIV_HSB)

include/configs/hammerhead.h

@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2008 Miromico AG
+ *
+ * Configuration settings for the Miromico Hammerhead AVR32 board
+ *
+ * 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
+
+#define CONFIG_AVR32			1
+#define CONFIG_AT32AP			1
+#define CONFIG_AT32AP7000		1
+#define CONFIG_HAMMERHEAD		1
+
+#define CFG_HZ				1000
+
+/*
+ * Set up the PLL to run at 125 MHz, the CPU to run at the PLL
+ * frequency, the HSB and PBB busses to run at 1/2 the PLL frequency
+ * and the PBA bus to run at 1/4 the PLL frequency.
+ */
+#define CONFIG_PLL			1
+#define CFG_POWER_MANAGER		1
+#define CFG_OSC0_HZ			25000000
+#define CFG_PLL0_DIV			1
+#define CFG_PLL0_MUL			5
+#define CFG_PLL0_SUPPRESS_CYCLES	16
+#define CFG_CLKDIV_CPU			0
+#define CFG_CLKDIV_HSB			1
+#define CFG_CLKDIV_PBA			2
+#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
+
+#define CONFIG_USART1			1
+
+#define CONFIG_HOSTNAME			hammerhead
+
+/* 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							\
+	"console=ttyS0 root=mtd1 rootfstype=jffs2"
+#define CONFIG_BOOTCOMMAND						\
+	"fsload; bootm"
+
+/*
+ * 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 address
+ * should be generated and assigned to the environment variables
+ * "ethaddr". This is normally done during production.
+ */
+#define CONFIG_OVERWRITE_ETHADDR_ONCE	1
+#define CONFIG_NET_MULTI		1
+
+/*
+ * BOOTP/DHCP 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_FPGA
+#undef CONFIG_CMD_SETGETDCR
+
+#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
+
+#define CFG_FLASH_CFI			1
+#define CFG_FLASH_CFI_DRIVER		1
+
+#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			0x24000000
+#define CFG_INTRAM_SIZE			0x8000
+
+#define CFG_SDRAM_BASE			0x10000000
+
+#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			(CFG_SDRAM_BASE + 0x00400000)
+#define CFG_BOOTPARAMS_LEN		(16 * 1024)
+
+/* Other configuration settings that shouldn't have to change all that often */
+#define CFG_PROMPT			"Hammerhead> "
+#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		CFG_SDRAM_BASE
+#define CFG_MEMTEST_END			(CFG_MEMTEST_START + 0x1f00000)
+
+#define CFG_BAUDRATE_TABLE { 115200, 38400, 19200, 9600, 2400 }
+
+#endif /* __CONFIG_H */