uboot/board/siemens/smartweb/smartweb.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2007-2008
   4 * Stelian Pop <stelian@popies.net>
   5 * Lead Tech Design <www.leadtechdesign.com>
   6 *
   7 * Achim Ehrlich <aehrlich@taskit.de>
   8 * taskit GmbH <www.taskit.de>
   9 *
  10 * (C) Copyright 2012-
  11 * Markus Hubig <mhubig@imko.de>
  12 * IMKO GmbH <www.imko.de>
  13 * (C) Copyright 2014
  14 * Heiko Schocher <hs@denx.de>
  15 * DENX Software Engineering GmbH
  16 */
  17
  18#include <common.h>
  19#include <dm.h>
  20#include <init.h>
  21#include <net.h>
  22#include <asm/global_data.h>
  23#include <asm/io.h>
  24#include <asm/arch/at91sam9_sdramc.h>
  25#include <asm/arch/at91sam9260_matrix.h>
  26#include <asm/arch/at91sam9_smc.h>
  27#include <asm/arch/at91_common.h>
  28#include <asm/arch/atmel_serial.h>
  29#include <asm/arch/at91_spi.h>
  30#include <spi.h>
  31#include <asm/arch/clk.h>
  32#include <asm/arch/gpio.h>
  33#include <asm/gpio.h>
  34#include <watchdog.h>
  35# include <net.h>
  36#ifndef CONFIG_DM_ETH
  37# include <netdev.h>
  38#endif
  39#include <g_dnl.h>
  40
  41DECLARE_GLOBAL_DATA_PTR;
  42
  43static void smartweb_request_gpio(void)
  44{
  45        gpio_request(CFG_SYS_NAND_ENABLE_PIN, "nand ena");
  46        gpio_request(CFG_SYS_NAND_READY_PIN, "nand rdy");
  47        gpio_request(AT91_PIN_PA26, "ena PHY");
  48}
  49
  50static void smartweb_nand_hw_init(void)
  51{
  52        struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
  53        struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
  54        unsigned long csa;
  55
  56        /* Assign CS3 to NAND/SmartMedia Interface */
  57        csa = readl(&matrix->ebicsa);
  58        csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
  59        writel(csa, &matrix->ebicsa);
  60
  61        /* Configure SMC CS3 for NAND/SmartMedia */
  62        writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
  63                AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
  64                &smc->cs[3].setup);
  65        writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
  66                AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
  67                &smc->cs[3].pulse);
  68        writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
  69               &smc->cs[3].cycle);
  70        writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
  71                AT91_SMC_MODE_TDF_CYCLE(2),
  72                &smc->cs[3].mode);
  73
  74        /* Configure RDY/BSY */
  75        at91_set_gpio_input(CFG_SYS_NAND_READY_PIN, 1);
  76
  77        /* Enable NandFlash */
  78        at91_set_gpio_output(CFG_SYS_NAND_ENABLE_PIN, 1);
  79}
  80
  81static void smartweb_macb_hw_init(void)
  82{
  83        struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
  84
  85        /* Enable the PHY Chip via PA26 on the Stamp 2 Adaptor */
  86        at91_set_gpio_output(AT91_PIN_PA26, 0);
  87
  88        /*
  89         * Disable pull-up on:
  90         *      RXDV (PA17) => PHY normal mode (not Test mode)
  91         *      ERX0 (PA14) => PHY ADDR0
  92         *      ERX1 (PA15) => PHY ADDR1
  93         *      ERX2 (PA25) => PHY ADDR2
  94         *      ERX3 (PA26) => PHY ADDR3
  95         *      ECRS (PA28) => PHY ADDR4  => PHYADDR = 0x0
  96         *
  97         * PHY has internal pull-down
  98         */
  99        writel(pin_to_mask(AT91_PIN_PA14) |
 100                pin_to_mask(AT91_PIN_PA15) |
 101                pin_to_mask(AT91_PIN_PA17) |
 102                pin_to_mask(AT91_PIN_PA25) |
 103                pin_to_mask(AT91_PIN_PA26) |
 104                pin_to_mask(AT91_PIN_PA28) |
 105                pin_to_mask(AT91_PIN_PA29),
 106                &pioa->pudr);
 107
 108        at91_phy_reset();
 109
 110        /* Re-enable pull-up */
 111        writel(pin_to_mask(AT91_PIN_PA14) |
 112                pin_to_mask(AT91_PIN_PA15) |
 113                pin_to_mask(AT91_PIN_PA17) |
 114                pin_to_mask(AT91_PIN_PA25) |
 115                pin_to_mask(AT91_PIN_PA26) |
 116                pin_to_mask(AT91_PIN_PA28) |
 117                pin_to_mask(AT91_PIN_PA29),
 118                &pioa->puer);
 119
 120        /* Initialize EMAC=MACB hardware */
 121        at91_macb_hw_init();
 122}
 123
 124#ifdef CONFIG_USB_GADGET_AT91
 125#include <linux/usb/at91_udc.h>
 126
 127void at91_udp_hw_init(void)
 128{
 129        /* Enable PLLB */
 130        at91_pllb_clk_enable(get_pllb_init());
 131
 132        /* Enable UDPCK clock, MCK is enabled in at91_clock_init() */
 133        at91_periph_clk_enable(ATMEL_ID_UDP);
 134
 135        at91_system_clk_enable(AT91SAM926x_PMC_UDP);
 136}
 137
 138struct at91_udc_data board_udc_data  = {
 139        .baseaddr = ATMEL_BASE_UDP0,
 140};
 141#endif
 142
 143int board_early_init_f(void)
 144{
 145        /* enable this here, as we have SPL without serial support */
 146        at91_seriald_hw_init();
 147        smartweb_request_gpio();
 148        return 0;
 149}
 150
 151int board_init(void)
 152{
 153        smartweb_request_gpio();
 154        /* power LED red */
 155        at91_set_gpio_output(AT91_PIN_PC6, 0);
 156        at91_set_gpio_output(AT91_PIN_PC7, 1);
 157        /* alarm LED off */
 158        at91_set_gpio_output(AT91_PIN_PC8, 0);
 159        at91_set_gpio_output(AT91_PIN_PC9, 0);
 160        /* prog LED red */
 161        at91_set_gpio_output(AT91_PIN_PC10, 0);
 162        at91_set_gpio_output(AT91_PIN_PC11, 1);
 163
 164#ifdef CONFIG_USB_GADGET_AT91
 165        at91_udp_hw_init();
 166        at91_udc_probe(&board_udc_data);
 167#endif
 168
 169        /* Adress of boot parameters */
 170        gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100;
 171
 172        smartweb_nand_hw_init();
 173        smartweb_macb_hw_init();
 174        return 0;
 175}
 176
 177int dram_init(void)
 178{
 179        gd->ram_size = get_ram_size(
 180                (void *)CFG_SYS_SDRAM_BASE,
 181                CFG_SYS_SDRAM_SIZE);
 182        return 0;
 183}
 184
 185#ifndef CONFIG_DM_ETH
 186#ifdef CONFIG_MACB
 187int board_eth_init(struct bd_info *bis)
 188{
 189        return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
 190}
 191#endif /* CONFIG_MACB */
 192#endif
 193
 194#if defined(CONFIG_SPL_BUILD)
 195#include <spl.h>
 196#include <nand.h>
 197#include <spi_flash.h>
 198
 199void matrix_init(void)
 200{
 201        struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
 202
 203        writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
 204                        | AT91_MATRIX_SLOT_CYCLE_(0x40),
 205                        &mat->scfg[3]);
 206}
 207
 208void at91_spl_board_init(void)
 209{
 210        smartweb_request_gpio();
 211        /* power LED orange */
 212        at91_set_gpio_output(AT91_PIN_PC6, 1);
 213        at91_set_gpio_output(AT91_PIN_PC7, 1);
 214        /* alarm LED orange */
 215        at91_set_gpio_output(AT91_PIN_PC8, 1);
 216        at91_set_gpio_output(AT91_PIN_PC9, 1);
 217        /* prog LED red */
 218        at91_set_gpio_output(AT91_PIN_PC10, 0);
 219        at91_set_gpio_output(AT91_PIN_PC11, 1);
 220
 221        smartweb_nand_hw_init();
 222        at91_set_gpio_input(AT91_PIN_PA28, 1);
 223        at91_set_gpio_input(AT91_PIN_PA29, 1);
 224
 225        /* check if both  button are pressed */
 226        if (at91_get_gpio_value(AT91_PIN_PA28) == 0 &&
 227                at91_get_gpio_value(AT91_PIN_PA29) == 0) {
 228                smartweb_nand_hw_init();
 229                nand_init();
 230                spl_nand_erase_one(0, 0);
 231        }
 232}
 233
 234#define SDRAM_BASE_CONF (AT91_SDRAMC_NC_9 | AT91_SDRAMC_NR_13 \
 235                         | AT91_SDRAMC_CAS_2 \
 236                         | AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
 237                         | AT91_SDRAMC_TWR_VAL(2) | AT91_SDRAMC_TRC_VAL(7) \
 238                         | AT91_SDRAMC_TRP_VAL(2) | AT91_SDRAMC_TRCD_VAL(2) \
 239                         | AT91_SDRAMC_TRAS_VAL(5) | AT91_SDRAMC_TXSR_VAL(8))
 240
 241void mem_init(void)
 242{
 243        struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
 244        struct at91_port *port = (struct at91_port *)ATMEL_BASE_PIOC;
 245        struct sdramc_reg setting;
 246
 247        setting.cr = SDRAM_BASE_CONF;
 248        setting.mdr = AT91_SDRAMC_MD_SDRAM;
 249        setting.tr = (CFG_SYS_MASTER_CLOCK * 7) / 1000000;
 250
 251        /*
 252         * I write here directly in this register, because this
 253         * approach is smaller than calling at91_set_a_periph() in a
 254         * for loop. This saved me 96 bytes.
 255         */
 256        writel(0xffff0000, &port->pdr);
 257
 258        writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC, &ma->ebicsa);
 259        sdramc_initialize(ATMEL_BASE_CS1, &setting);
 260}
 261#endif
 262
 263int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 264{
 265        g_dnl_set_serialnumber("1");
 266        return 0;
 267}
 268