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