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https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
196 lines
5.4 KiB
C
196 lines
5.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2011
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* egnite GmbH <info@egnite.de>
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*
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* (C) Copyright 2010
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* Ole Reinhardt <ole.reinhardt@thermotemp.de>
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*/
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/*
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* Ethernut 5 general board support
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*
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* Ethernut is an open source hardware and software project for
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* embedded Ethernet devices. Hardware layouts and CAD files are
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* freely available under BSD-like license.
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*
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* Ethernut 5 is the first member of the Ethernut board family
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* with U-Boot and Linux support. This implementation is based
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* on the original work done by Ole Reinhardt, but heavily modified
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* to support additional features and the latest board revision 5.0F.
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*
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* Main board components are by default:
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*
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* Atmel AT91SAM9XE512 CPU with 512 kBytes NOR Flash
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* 2 x 64 MBytes Micron MT48LC32M16A2P SDRAM
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* 512 MBytes Micron MT29F4G08ABADA NAND Flash
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* 4 MBytes Atmel AT45DB321D DataFlash
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* SMSC LAN8710 Ethernet PHY
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* Atmel ATmega168 MCU used for power management
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* Linear Technology LTC4411 PoE controller
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*
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* U-Boot relevant board interfaces are:
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*
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* 100 Mbit Ethernet with IEEE 802.3af PoE
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* RS-232 serial port
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* USB host and device
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* MMC/SD-Card slot
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* Expansion port with I2C, SPI and more...
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*
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* Typically the U-Boot image is loaded from serial DataFlash into
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* SDRAM by the samboot boot loader, which is located in internal
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* NOR Flash and provides all essential initializations like CPU
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* and peripheral clocks and, of course, the SDRAM configuration.
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*
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* For testing purposes it is also possibly to directly transfer
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* the image into SDRAM via JTAG. A tested configuration exists
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* for the Turtelizer 2 hardware dongle and the OpenOCD software.
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* In this case the latter will do the basic hardware configuration
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* via its reset-init script.
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*
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* For additional information visit the project home page at
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* http://www.ethernut.de/
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*/
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#include <common.h>
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#include <net.h>
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#include <netdev.h>
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#include <miiphy.h>
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#include <i2c.h>
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#include <mmc.h>
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#include <atmel_mci.h>
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#include <asm/arch/at91sam9260.h>
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#include <asm/arch/at91sam9260_matrix.h>
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#include <asm/arch/at91sam9_smc.h>
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#include <asm/arch/at91_common.h>
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#include <asm/arch/clk.h>
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#include <asm/arch/gpio.h>
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#include <asm/io.h>
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#include <asm/gpio.h>
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#include "ethernut5_pwrman.h"
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* This is called last during early initialization. Most of the basic
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* hardware interfaces are up and running.
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*
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* The SDRAM hardware has been configured by the first stage boot loader.
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* We only need to announce its size, using u-boot's memory check.
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*/
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int dram_init(void)
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{
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gd->ram_size = get_ram_size(
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(void *)CONFIG_SYS_SDRAM_BASE,
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CONFIG_SYS_SDRAM_SIZE);
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return 0;
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}
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#ifdef CONFIG_CMD_NAND
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static void ethernut5_nand_hw_init(void)
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{
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struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
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struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
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unsigned long csa;
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/* Assign CS3 to NAND/SmartMedia Interface */
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csa = readl(&matrix->ebicsa);
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csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
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writel(csa, &matrix->ebicsa);
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/* Configure SMC CS3 for NAND/SmartMedia */
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writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
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AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
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&smc->cs[3].setup);
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writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
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AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
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&smc->cs[3].pulse);
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writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
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&smc->cs[3].cycle);
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writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
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AT91_SMC_MODE_EXNW_DISABLE |
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AT91_SMC_MODE_DBW_8 |
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AT91_SMC_MODE_TDF_CYCLE(2),
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&smc->cs[3].mode);
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#ifdef CONFIG_SYS_NAND_READY_PIN
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/* Ready pin is optional. */
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at91_set_pio_input(CONFIG_SYS_NAND_READY_PIN, 1);
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#endif
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gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
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}
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#endif
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/*
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* This is called first during late initialization.
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*/
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int board_init(void)
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{
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at91_periph_clk_enable(ATMEL_ID_PIOA);
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at91_periph_clk_enable(ATMEL_ID_PIOB);
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at91_periph_clk_enable(ATMEL_ID_PIOC);
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/* Set adress of boot parameters. */
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gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
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/* Initialize UARTs and power management. */
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ethernut5_power_init();
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#ifdef CONFIG_CMD_NAND
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ethernut5_nand_hw_init();
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#endif
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return 0;
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}
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#ifdef CONFIG_MACB
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/*
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* This is optionally called last during late initialization.
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*/
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int board_eth_init(bd_t *bis)
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{
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const char *devname;
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unsigned short mode;
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at91_periph_clk_enable(ATMEL_ID_EMAC0);
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/* Need to reset PHY via power management. */
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ethernut5_phy_reset();
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/* Set peripheral pins. */
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at91_macb_hw_init();
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/* Basic EMAC initialization. */
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if (macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, CONFIG_PHY_ID))
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return -1;
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/*
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* Early board revisions have a pull-down at the PHY's MODE0
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* strap pin, which forces the PHY into power down. Here we
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* switch to all-capable mode.
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*/
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devname = miiphy_get_current_dev();
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if (miiphy_read(devname, 0, 18, &mode) == 0) {
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/* Set mode[2:0] to 0b111. */
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mode |= 0x00E0;
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miiphy_write(devname, 0, 18, mode);
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/* Soft reset overrides strap pins. */
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miiphy_write(devname, 0, MII_BMCR, BMCR_RESET);
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}
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/* Sync environment with network devices, needed for nfsroot. */
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return eth_init();
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}
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#endif
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#ifdef CONFIG_GENERIC_ATMEL_MCI
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int board_mmc_init(bd_t *bd)
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{
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at91_periph_clk_enable(ATMEL_ID_MCI);
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/* Initialize MCI hardware. */
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at91_mci_hw_init();
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/* Register the device. */
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return atmel_mci_init((void *)ATMEL_BASE_MCI);
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}
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int board_mmc_getcd(struct mmc *mmc)
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{
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return !at91_get_pio_value(CONFIG_SYS_MMC_CD_PIN);
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}
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#endif
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