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authorTim Schendekehl <tim.schendekehl@egnite.de>2011-11-01 23:55:01 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2011-12-06 23:59:31 +0100
commit14c326149739b784bbb8b57f5bbec61f1723efab (patch)
treecd902e49220b224e72e013bfb59310ceafe21640 /board/egnite
parent28cb465f78027c2e7eb6678a61bf5c71e6b2cdeb (diff)
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Ethernut 5 board support
Add support for the Ethernut 5 open hardware design, based on Atmel's AT91SAM9XE512 SoC. V4 - Fix several coding style issues. - Move machine type to config file. - Remove use of CONFIG_ATMEL_LEGACY. Signed-off-by: Tim Schendekehl <tim.schendekehl@egnite.de>
Diffstat (limited to 'board/egnite')
-rw-r--r--board/egnite/ethernut5/Makefile48
-rw-r--r--board/egnite/ethernut5/ethernut5.c270
-rw-r--r--board/egnite/ethernut5/ethernut5_pwrman.c338
-rw-r--r--board/egnite/ethernut5/ethernut5_pwrman.h68
4 files changed, 724 insertions, 0 deletions
diff --git a/board/egnite/ethernut5/Makefile b/board/egnite/ethernut5/Makefile
new file mode 100644
index 0000000..8dc85d2
--- /dev/null
+++ b/board/egnite/ethernut5/Makefile
@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2003-2008
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2010
+# egnite GmbH
+#
+# 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).o
+
+COBJS-y += $(BOARD).o
+COBJS-y += $(BOARD)_pwrman.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y))
+SOBJS := $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(obj).depend $(OBJS) $(SOBJS)
+ $(call cmd_link_o_target, $(OBJS) $(SOBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/egnite/ethernut5/ethernut5.c b/board/egnite/ethernut5/ethernut5.c
new file mode 100644
index 0000000..e42e91e
--- /dev/null
+++ b/board/egnite/ethernut5/ethernut5.c
@@ -0,0 +1,270 @@
+/*
+ * (C) Copyright 2011
+ * egnite GmbH <info@egnite.de>
+ *
+ * (C) Copyright 2010
+ * Ole Reinhardt <ole.reinhardt@thermotemp.de>
+ *
+ * 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
+ */
+
+/*
+ * Ethernut 5 general board support
+ *
+ * Ethernut is an open source hardware and software project for
+ * embedded Ethernet devices. Hardware layouts and CAD files are
+ * freely available under BSD-like license.
+ *
+ * Ethernut 5 is the first member of the Ethernut board family
+ * with U-Boot and Linux support. This implementation is based
+ * on the original work done by Ole Reinhardt, but heavily modified
+ * to support additional features and the latest board revision 5.0F.
+ *
+ * Main board components are by default:
+ *
+ * Atmel AT91SAM9XE512 CPU with 512 kBytes NOR Flash
+ * 2 x 64 MBytes Micron MT48LC32M16A2P SDRAM
+ * 512 MBytes Micron MT29F4G08ABADA NAND Flash
+ * 4 MBytes Atmel AT45DB321D DataFlash
+ * SMSC LAN8710 Ethernet PHY
+ * Atmel ATmega168 MCU used for power management
+ * Linear Technology LTC4411 PoE controller
+ *
+ * U-Boot relevant board interfaces are:
+ *
+ * 100 Mbit Ethernet with IEEE 802.3af PoE
+ * RS-232 serial port
+ * USB host and device
+ * MMC/SD-Card slot
+ * Expansion port with I2C, SPI and more...
+ *
+ * Typically the U-Boot image is loaded from serial DataFlash into
+ * SDRAM by the samboot boot loader, which is located in internal
+ * NOR Flash and provides all essential initializations like CPU
+ * and peripheral clocks and, of course, the SDRAM configuration.
+ *
+ * For testing purposes it is also possibly to directly transfer
+ * the image into SDRAM via JTAG. A tested configuration exists
+ * for the Turtelizer 2 hardware dongle and the OpenOCD software.
+ * In this case the latter will do the basic hardware configuration
+ * via its reset-init script.
+ *
+ * For additional information visit the project home page at
+ * http://www.ethernut.de/
+ */
+
+#include <common.h>
+#include <net.h>
+#include <netdev.h>
+#include <miiphy.h>
+#include <i2c.h>
+#include <spi.h>
+#include <dataflash.h>
+#include <mmc.h>
+
+#include <asm/arch/at91sam9260.h>
+#include <asm/arch/at91sam9260_matrix.h>
+#include <asm/arch/at91sam9_smc.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_spi.h>
+#include <asm/arch/gpio.h>
+#include <asm/io.h>
+
+#include "ethernut5_pwrman.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+AT91S_DATAFLASH_INFO dataflash_info[CONFIG_SYS_MAX_DATAFLASH_BANKS];
+
+struct dataflash_addr cs[CONFIG_SYS_MAX_DATAFLASH_BANKS] = {
+ {CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0, 0}
+};
+
+/*
+ * In fact we have 7 partitions, but u-boot supports 5 only. This is
+ * no big deal, because the first partition is reserved for applications
+ * and the last one is used by Nut/OS. Both need not to be visible here.
+ */
+dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
+ { 0x00021000, 0x00041FFF, FLAG_PROTECT_SET, 0, "setup" },
+ { 0x00042000, 0x000C5FFF, FLAG_PROTECT_SET, 0, "uboot" },
+ { 0x000C6000, 0x00359FFF, FLAG_PROTECT_SET, 0, "kernel" },
+ { 0x0035A000, 0x003DDFFF, FLAG_PROTECT_SET, 0, "nutos" },
+ { 0x003DE000, 0x003FEFFF, FLAG_PROTECT_CLEAR, 0, "env" }
+};
+
+/*
+ * This is called last during early initialization. Most of the basic
+ * hardware interfaces are up and running.
+ *
+ * The SDRAM hardware has been configured by the first stage boot loader.
+ * We only need to announce its size, using u-boot's memory check.
+ */
+int dram_init(void)
+{
+ gd->ram_size = get_ram_size(
+ (void *)CONFIG_SYS_SDRAM_BASE,
+ CONFIG_SYS_SDRAM_SIZE);
+ return 0;
+}
+
+#ifdef CONFIG_CMD_NAND
+static void ethernut5_nand_hw_init(void)
+{
+ struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
+ struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
+ unsigned long csa;
+
+ /* Assign CS3 to NAND/SmartMedia Interface */
+ csa = readl(&matrix->ebicsa);
+ csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
+ writel(csa, &matrix->ebicsa);
+
+ /* Configure SMC CS3 for NAND/SmartMedia */
+ writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
+ AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
+ &smc->cs[3].setup);
+ writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
+ AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
+ &smc->cs[3].pulse);
+ writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
+ &smc->cs[3].cycle);
+ writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
+ AT91_SMC_MODE_EXNW_DISABLE |
+ AT91_SMC_MODE_DBW_8 |
+ AT91_SMC_MODE_TDF_CYCLE(2),
+ &smc->cs[3].mode);
+
+#ifdef CONFIG_SYS_NAND_READY_PIN
+ /* Ready pin is optional. */
+ at91_set_pio_input(CONFIG_SYS_NAND_READY_PIN, 1);
+#endif
+ at91_set_pio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
+}
+#endif
+
+/*
+ * This is called first during late initialization.
+ */
+int board_init(void)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ /* Enable clocks for all PIOs */
+ writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) |
+ (1 << ATMEL_ID_PIOC),
+ &pmc->pcer);
+ /* Set adress of boot parameters. */
+ gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+ /* Initialize UARTs and power management. */
+ at91_seriald_hw_init();
+ ethernut5_power_init();
+#ifdef CONFIG_CMD_NAND
+ ethernut5_nand_hw_init();
+#endif
+#ifdef CONFIG_HAS_DATAFLASH
+ at91_spi0_hw_init(1 << 0);
+#endif
+ return 0;
+}
+
+#ifdef CONFIG_MACB
+/*
+ * This is optionally called last during late initialization.
+ */
+int board_eth_init(bd_t *bis)
+{
+ const char *devname;
+ unsigned short mode;
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ /* Enable on-chip EMAC clock. */
+ writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
+ /* Need to reset PHY via power management. */
+ ethernut5_phy_reset();
+ /* Set peripheral pins. */
+ at91_macb_hw_init();
+ /* Basic EMAC initialization. */
+ if (macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, CONFIG_PHY_ID))
+ return -1;
+ /*
+ * Early board revisions have a pull-down at the PHY's MODE0
+ * strap pin, which forces the PHY into power down. Here we
+ * switch to all-capable mode.
+ */
+ devname = miiphy_get_current_dev();
+ if (miiphy_read(devname, 0, 18, &mode) == 0) {
+ /* Set mode[2:0] to 0b111. */
+ mode |= 0x00E0;
+ miiphy_write(devname, 0, 18, mode);
+ /* Soft reset overrides strap pins. */
+ miiphy_write(devname, 0, MII_BMCR, BMCR_RESET);
+ }
+ /* Sync environment with network devices, needed for nfsroot. */
+ return eth_init(gd->bd);
+}
+#endif
+
+#ifdef CONFIG_GENERIC_ATMEL_MCI
+int board_mmc_init(bd_t *bd)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ /* Enable MCI clock. */
+ writel(1 << ATMEL_ID_MCI, &pmc->pcer);
+ /* Initialize MCI hardware. */
+ at91_mci_hw_init();
+ /* Register the device. */
+ return atmel_mci_init((void *)ATMEL_BASE_MCI);
+}
+
+int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+{
+ *cd = at91_get_pio_value(CONFIG_SYS_MMC_CD_PIN) ? 1 : 0;
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_ATMEL_SPI
+/*
+ * Note, that u-boot uses different code for SPI bus access. While
+ * memory routines use automatic chip select control, the serial
+ * flash support requires 'manual' GPIO control. Thus, we switch
+ * modes.
+ */
+void spi_cs_activate(struct spi_slave *slave)
+{
+ /* Enable NPCS0 in GPIO mode. This disables peripheral control. */
+ at91_set_pio_output(AT91_PIO_PORTA, 3, 0);
+}
+
+void spi_cs_deactivate(struct spi_slave *slave)
+{
+ /* Disable NPCS0 in GPIO mode. */
+ at91_set_pio_output(AT91_PIO_PORTA, 3, 1);
+ /* Switch back to peripheral chip select control. */
+ at91_set_a_periph(AT91_PIO_PORTA, 3, 1);
+}
+
+int spi_cs_is_valid(unsigned int bus, unsigned int cs)
+{
+ return bus == 0 && cs == 0;
+}
+#endif
diff --git a/board/egnite/ethernut5/ethernut5_pwrman.c b/board/egnite/ethernut5/ethernut5_pwrman.c
new file mode 100644
index 0000000..4b00038
--- /dev/null
+++ b/board/egnite/ethernut5/ethernut5_pwrman.c
@@ -0,0 +1,338 @@
+/*
+ * (C) Copyright 2011
+ * egnite GmbH <info@egnite.de>
+ *
+ * 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
+ */
+
+/*
+ * Ethernut 5 power management support
+ *
+ * This board may be supplied via USB, IEEE 802.3af PoE or an
+ * auxiliary DC input. An on-board ATmega168 microcontroller,
+ * the so called power management controller or PMC, is used
+ * to select the supply source and to switch on and off certain
+ * energy consuming board components. This allows to reduce the
+ * total stand-by consumption to less than 70mW.
+ *
+ * The main CPU communicates with the PMC via I2C. When
+ * CONFIG_CMD_BSP is defined in the board configuration file,
+ * then the board specific command 'pwrman' becomes available,
+ * which allows to manually deal with the PMC.
+ *
+ * Two distinct registers are provided by the PMC for enabling
+ * and disabling specific features. This avoids the often seen
+ * read-modify-write cycle or shadow register requirement.
+ * Additional registers are available to query the board
+ * status and temperature, the auxiliary voltage and to control
+ * the green user LED that is integrated in the reset switch.
+ *
+ * Note, that the AVR firmware of the PMC is released under BSDL.
+ *
+ * For additional information visit the project home page at
+ * http://www.ethernut.de/
+ */
+#include <common.h>
+#include <asm/arch/at91sam9260.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/gpio.h>
+#include <asm/io.h>
+#include <i2c.h>
+
+#include "ethernut5_pwrman.h"
+
+/* PMC firmware version */
+static int pwrman_major;
+static int pwrman_minor;
+
+/*
+ * Enable Ethernut 5 power management.
+ *
+ * This function must be called during board initialization.
+ * While we are using u-boot's I2C subsystem, it may be required
+ * to enable the serial port before calling this function,
+ * in particular when debugging is enabled.
+ *
+ * If board specific commands are not available, we will activate
+ * all board components.
+ */
+void ethernut5_power_init(void)
+{
+ pwrman_minor = i2c_reg_read(PWRMAN_I2C_ADDR, PWRMAN_REG_VERS);
+ pwrman_major = pwrman_minor >> 4;
+ pwrman_minor &= 15;
+
+#ifndef CONFIG_CMD_BSP
+ /* Do not modify anything, if we do not have a known version. */
+ if (pwrman_major == 2) {
+ /* Without board specific commands we enable all features. */
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_ENA, ~PWRMAN_ETHRST);
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_DIS, PWRMAN_ETHRST);
+ }
+#endif
+}
+
+/*
+ * Reset Ethernet PHY.
+ *
+ * This function allows the re-configure the PHY after
+ * changing its strap pins.
+ */
+void ethernut5_phy_reset(void)
+{
+ /* Do not modify anything, if we do not have a known version. */
+ if (pwrman_major != 2)
+ return;
+
+ /*
+ * Make sure that the Ethernet clock is enabled and the PHY reset
+ * is disabled for at least 100 us.
+ */
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_ENA, PWRMAN_ETHCLK);
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_DIS, PWRMAN_ETHRST);
+ udelay(100);
+
+ /*
+ * LAN8710 strap pins are
+ * PA14 => PHY MODE0
+ * PA15 => PHY MODE1
+ * PA17 => PHY MODE2 => 111b all capable
+ * PA18 => PHY ADDR0 => 0b
+ */
+ at91_set_pio_input(AT91_PIO_PORTA, 14, 1);
+ at91_set_pio_input(AT91_PIO_PORTA, 15, 1);
+ at91_set_pio_input(AT91_PIO_PORTA, 17, 1);
+ at91_set_pio_input(AT91_PIO_PORTA, 18, 0);
+
+ /* Activate PHY reset for 100 us. */
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_ENA, PWRMAN_ETHRST);
+ udelay(100);
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_DIS, PWRMAN_ETHRST);
+
+ at91_set_pio_input(AT91_PIO_PORTA, 14, 1);
+}
+
+/*
+ * Output the firmware version we got during initialization.
+ */
+void ethernut5_print_version(void)
+{
+ printf("%u.%u\n", pwrman_major, pwrman_minor);
+}
+
+/*
+ * All code below this point is optional and implements
+ * the 'pwrman' command.
+ */
+#ifdef CONFIG_CMD_BSP
+
+/* Human readable names of PMC features */
+char *pwrman_feat[8] = {
+ "board", "vbin", "vbout", "mmc",
+ "rs232", "ethclk", "ethrst", "wakeup"
+};
+
+/*
+ * Print all feature names, that have its related flags enabled.
+ */
+static void print_flagged_features(u8 flags)
+{
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ if (flags & (1 << i))
+ printf("%s ", pwrman_feat[i]);
+ }
+}
+
+/*
+ * Return flags of a given list of feature names.
+ *
+ * The function stops at the first unknown list entry and
+ * returns the number of detected names as a function result.
+ */
+static int feature_flags(char * const names[], int num, u8 *flags)
+{
+ int i, j;
+
+ *flags = 0;
+ for (i = 0; i < num; i++) {
+ for (j = 0; j < 8; j++) {
+ if (strcmp(pwrman_feat[j], names[i]) == 0) {
+ *flags |= 1 << j;
+ break;
+ }
+ }
+ if (j > 7)
+ break;
+ }
+ return i;
+}
+
+void ethernut5_print_power(void)
+{
+ u8 flags;
+ int i;
+
+ flags = i2c_reg_read(PWRMAN_I2C_ADDR, PWRMAN_REG_ENA);
+ for (i = 0; i < 2; i++) {
+ if (flags) {
+ print_flagged_features(flags);
+ printf("%s\n", i ? "off" : "on");
+ }
+ flags = ~flags;
+ }
+}
+
+void ethernut5_print_celsius(void)
+{
+ int val;
+
+ /* Read ADC value from LM50 and return Celsius degrees. */
+ val = i2c_reg_read(PWRMAN_I2C_ADDR, PWRMAN_REG_TEMP);
+ val *= 5000; /* 100mV/degree with 5V reference */
+ val += 128; /* 8 bit resolution */
+ val /= 256;
+ val -= 450; /* Celsius offset, still x10 */
+ /* Output full degrees. */
+ printf("%d\n", (val + 5) / 10);
+}
+
+void ethernut5_print_voltage(void)
+{
+ int val;
+
+ /* Read ADC value from divider and return voltage. */
+ val = i2c_reg_read(PWRMAN_I2C_ADDR, PWRMAN_REG_VAUX);
+ /* Resistors are 100k and 12.1k */
+ val += 5;
+ val *= 180948;
+ val /= 100000;
+ val++;
+ /* Calculation was done in 0.1V units. */
+ printf("%d\n", (val + 5) / 10);
+}
+
+/*
+ * Process the board specific 'pwrman' command.
+ */
+int do_pwrman(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ u8 val;
+ int i;
+
+ if (argc == 1) {
+ ethernut5_print_power();
+ } else if (argc == 2 && strcmp(argv[1], "reset") == 0) {
+ at91_set_pio_output(AT91_PIO_PORTB, 8, 1);
+ udelay(100);
+ at91_set_pio_output(AT91_PIO_PORTB, 8, 0);
+ udelay(100000);
+ } else if (argc == 2 && strcmp(argv[1], "temp") == 0) {
+ ethernut5_print_celsius();
+ } else if (argc == 2 && strcmp(argv[1], "vaux") == 0) {
+ ethernut5_print_voltage();
+ } else if (argc == 2 && strcmp(argv[1], "version") == 0) {
+ ethernut5_print_version();
+ } else if (strcmp(argv[1], "led") == 0) {
+ /* Control the green status LED. Blink frequency unit
+ ** is 0.1s, very roughly. */
+ if (argc == 2) {
+ /* No more arguments, output current settings. */
+ val = i2c_reg_read(PWRMAN_I2C_ADDR, PWRMAN_REG_LEDCTL);
+ printf("led %u %u\n", val >> 4, val & 15);
+ } else {
+ /* First argument specifies the on-time. */
+ val = (u8) simple_strtoul(argv[2], NULL, 0);
+ val <<= 4;
+ if (argc > 3) {
+ /* Second argument specifies the off-time. */
+ val |= (u8) (simple_strtoul(argv[3], NULL, 0)
+ & 15);
+ }
+ /* Update the LED control register. */
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_LEDCTL, val);
+ }
+ } else {
+ /* We expect a list of features followed an optional status. */
+ argc--;
+ i = feature_flags(&argv[1], argc, &val);
+ if (argc == i) {
+ /* We got a list only, print status. */
+ val &= i2c_reg_read(PWRMAN_I2C_ADDR, PWRMAN_REG_STA);
+ if (val) {
+ if (i > 1)
+ print_flagged_features(val);
+ printf("active\n");
+ } else {
+ printf("inactive\n");
+ }
+ } else {
+ /* More arguments. */
+ if (i == 0) {
+ /* No given feature, use despensibles. */
+ val = PWRMAN_DISPENSIBLE;
+ }
+ if (strcmp(argv[i + 1], "on") == 0) {
+ /* Enable features. */
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_ENA,
+ val);
+ } else if (strcmp(argv[i + 1], "off") == 0) {
+ /* Disable features. */
+ i2c_reg_write(PWRMAN_I2C_ADDR, PWRMAN_REG_DIS,
+ val);
+ } else {
+ printf("Bad parameter %s\n", argv[i + 1]);
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+U_BOOT_CMD(
+ pwrman, CONFIG_SYS_MAXARGS, 1, do_pwrman,
+ "power management",
+ "- print settings\n"
+ "pwrman feature ...\n"
+ " - print status\n"
+ "pwrman [feature ...] on|off\n"
+ " - enable/disable specified or all dispensible features\n"
+ "pwrman led [on-time [off-time]]\n"
+ " - print or set led blink timer\n"
+ "pwrman temp\n"
+ " - print board temperature (Celsius)\n"
+ "pwrman vaux\n"
+ " - print auxiliary input voltage\n"
+ "pwrman reset\n"
+ " - reset power management controller\n"
+ "pwrman version\n"
+ " - print firmware version\n"
+ "\n"
+ " features, (*)=dispensible:\n"
+ " board - 1.8V and 3.3V supply\n"
+ " vbin - supply via USB device connector\n"
+ " vbout - USB host connector supply(*)\n"
+ " mmc - MMC slot supply(*)\n"
+ " rs232 - RS232 driver\n"
+ " ethclk - Ethernet PHY clock(*)\n"
+ " ethrst - Ethernet PHY reset\n"
+ " wakeup - RTC alarm"
+);
+#endif /* CONFIG_CMD_BSP */
diff --git a/board/egnite/ethernut5/ethernut5_pwrman.h b/board/egnite/ethernut5/ethernut5_pwrman.h
new file mode 100644
index 0000000..0541884
--- /dev/null
+++ b/board/egnite/ethernut5/ethernut5_pwrman.h
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2011
+ * egnite GmbH <info@egnite.de>
+ *
+ * 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
+ */
+
+/*
+ * Ethernut 5 power management support
+ *
+ * For additional information visit the project home page at
+ * http://www.ethernut.de/
+ */
+
+/* I2C address of the PMC */
+#define PWRMAN_I2C_ADDR 0x22
+
+/* PMC registers */
+#define PWRMAN_REG_VERS 0 /* Version register */
+#define PWRMAN_REG_STA 1 /* Feature status register */
+#define PWRMAN_REG_ENA 2 /* Feature enable register */
+#define PWRMAN_REG_DIS 3 /* Feature disable register */
+#define PWRMAN_REG_TEMP 4 /* Board temperature */
+#define PWRMAN_REG_VAUX 6 /* Auxiliary input voltage */
+#define PWRMAN_REG_LEDCTL 8 /* LED blinking timer. */
+
+/* Feature flags used in status, enable and disable registers */
+#define PWRMAN_BOARD 0x01 /* 1.8V and 3.3V supply */
+#define PWRMAN_VBIN 0x02 /* VBUS input at device connector */
+#define PWRMAN_VBOUT 0x04 /* VBUS output at host connector */
+#define PWRMAN_MMC 0x08 /* Memory card supply */
+#define PWRMAN_RS232 0x10 /* RS-232 driver shutdown */
+#define PWRMAN_ETHCLK 0x20 /* Ethernet clock enable */
+#define PWRMAN_ETHRST 0x40 /* Ethernet PHY reset */
+#define PWRMAN_WAKEUP 0x80 /* RTC wake-up */
+
+/* Features, which are not essential to keep u-boot alive */
+#define PWRMAN_DISPENSIBLE (PWRMAN_VBOUT | PWRMAN_MMC | PWRMAN_ETHCLK)
+
+/* Enable Ethernut 5 power management. */
+extern void ethernut5_power_init(void);
+
+/* Reset Ethernet PHY. */
+extern void ethernut5_phy_reset(void);
+
+extern void ethernut5_print_version(void);
+
+#ifdef CONFIG_CMD_BSP
+extern void ethernut5_print_power(void);
+extern void ethernut5_print_celsius(void);
+extern void ethernut5_print_voltage(void);
+#endif