uboot/board/renesas/sh7752evb/sh7752evb.c
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   1/*
   2 * Copyright (C) 2012  Renesas Solutions Corp.
   3 *
   4 * SPDX-License-Identifier:     GPL-2.0+
   5 */
   6
   7#include <common.h>
   8#include <malloc.h>
   9#include <asm/processor.h>
  10#include <asm/io.h>
  11#include <asm/mmc.h>
  12#include <spi.h>
  13#include <spi_flash.h>
  14
  15int checkboard(void)
  16{
  17        puts("BOARD: SH7752 evaluation board (R0P7752C00000RZ)\n");
  18
  19        return 0;
  20}
  21
  22static void init_gpio(void)
  23{
  24        struct gpio_regs *gpio = GPIO_BASE;
  25        struct sermux_regs *sermux = SERMUX_BASE;
  26
  27        /* GPIO */
  28        writew(0x0000, &gpio->pacr);    /* GETHER */
  29        writew(0x0001, &gpio->pbcr);    /* INTC */
  30        writew(0x0000, &gpio->pccr);    /* PWMU, INTC */
  31        writew(0xeaff, &gpio->pecr);    /* GPIO */
  32        writew(0x0000, &gpio->pfcr);    /* WDT */
  33        writew(0x0000, &gpio->phcr);    /* SPI1 */
  34        writew(0x0000, &gpio->picr);    /* SDHI */
  35        writew(0x0003, &gpio->pkcr);    /* SerMux */
  36        writew(0x0000, &gpio->plcr);    /* SerMux */
  37        writew(0x0000, &gpio->pmcr);    /* RIIC */
  38        writew(0x0000, &gpio->pncr);    /* USB, SGPIO */
  39        writew(0x0000, &gpio->pocr);    /* SGPIO */
  40        writew(0xd555, &gpio->pqcr);    /* GPIO */
  41        writew(0x0000, &gpio->prcr);    /* RIIC */
  42        writew(0x0000, &gpio->pscr);    /* RIIC */
  43        writeb(0x00, &gpio->pudr);
  44        writew(0x5555, &gpio->pucr);    /* Debug LED */
  45        writew(0x0000, &gpio->pvcr);    /* RSPI */
  46        writew(0x0000, &gpio->pwcr);    /* EVC */
  47        writew(0x0000, &gpio->pxcr);    /* LBSC */
  48        writew(0x0000, &gpio->pycr);    /* LBSC */
  49        writew(0x0000, &gpio->pzcr);    /* eMMC */
  50        writew(0xfe00, &gpio->psel0);
  51        writew(0xff00, &gpio->psel3);
  52        writew(0x771f, &gpio->psel4);
  53        writew(0x00ff, &gpio->psel6);
  54        writew(0xfc00, &gpio->psel7);
  55
  56        writeb(0x10, &sermux->smr0);    /* SMR0: SerMux mode 0 */
  57}
  58
  59static void init_usb_phy(void)
  60{
  61        struct usb_common_regs *common0 = USB0_COMMON_BASE;
  62        struct usb_common_regs *common1 = USB1_COMMON_BASE;
  63        struct usb0_phy_regs *phy = USB0_PHY_BASE;
  64        struct usb1_port_regs *port = USB1_PORT_BASE;
  65        struct usb1_alignment_regs *align = USB1_ALIGNMENT_BASE;
  66
  67        writew(0x0100, &phy->reset);            /* set reset */
  68        /* port0 = USB0, port1 = USB1 */
  69        writew(0x0002, &phy->portsel);
  70        writel(0x0001, &port->port1sel);        /* port1 = Host */
  71        writew(0x0111, &phy->reset);            /* clear reset */
  72
  73        writew(0x4000, &common0->suspmode);
  74        writew(0x4000, &common1->suspmode);
  75
  76#if defined(__LITTLE_ENDIAN)
  77        writel(0x00000000, &align->ehcidatac);
  78        writel(0x00000000, &align->ohcidatac);
  79#endif
  80}
  81
  82static void init_gether_mdio(void)
  83{
  84        struct gpio_regs *gpio = GPIO_BASE;
  85
  86        writew(readw(&gpio->pgcr) | 0x0004, &gpio->pgcr);
  87        writeb(readb(&gpio->pgdr) | 0x02, &gpio->pgdr); /* Use ET0-MDIO */
  88}
  89
  90static void set_mac_to_sh_giga_eth_register(int channel, char *mac_string)
  91{
  92        struct ether_mac_regs *ether;
  93        unsigned char mac[6];
  94        unsigned long val;
  95
  96        eth_parse_enetaddr(mac_string, mac);
  97
  98        if (!channel)
  99                ether = GETHER0_MAC_BASE;
 100        else
 101                ether = GETHER1_MAC_BASE;
 102
 103        val = (mac[0] << 24) | (mac[1] << 16) | (mac[2] << 8) | mac[3];
 104        writel(val, &ether->mahr);
 105        val = (mac[4] << 8) | mac[5];
 106        writel(val, &ether->malr);
 107}
 108
 109/*****************************************************************
 110 * This PMB must be set on this timing. The lowlevel_init is run on
 111 * Area 0(phys 0x00000000), so we have to map it.
 112 *
 113 * The new PMB table is following:
 114 * ent  virt            phys            v       sz      c       wt
 115 * 0    0xa0000000      0x40000000      1       128M    0       1
 116 * 1    0xa8000000      0x48000000      1       128M    0       1
 117 * 2    0xb0000000      0x50000000      1       128M    0       1
 118 * 3    0xb8000000      0x58000000      1       128M    0       1
 119 * 4    0x80000000      0x40000000      1       128M    1       1
 120 * 5    0x88000000      0x48000000      1       128M    1       1
 121 * 6    0x90000000      0x50000000      1       128M    1       1
 122 * 7    0x98000000      0x58000000      1       128M    1       1
 123 */
 124static void set_pmb_on_board_init(void)
 125{
 126        struct mmu_regs *mmu = MMU_BASE;
 127
 128        /* clear ITLB */
 129        writel(0x00000004, &mmu->mmucr);
 130
 131        /* delete PMB for SPIBOOT */
 132        writel(0, PMB_ADDR_BASE(0));
 133        writel(0, PMB_DATA_BASE(0));
 134
 135        /* add PMB for SDRAM(0x40000000 - 0x47ffffff) */
 136        /*                      ppn  ub v s1 s0  c  wt */
 137        writel(mk_pmb_addr_val(0xa0), PMB_ADDR_BASE(0));
 138        writel(mk_pmb_data_val(0x40, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(0));
 139        writel(mk_pmb_addr_val(0xb0), PMB_ADDR_BASE(2));
 140        writel(mk_pmb_data_val(0x50, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(2));
 141        writel(mk_pmb_addr_val(0xb8), PMB_ADDR_BASE(3));
 142        writel(mk_pmb_data_val(0x58, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(3));
 143        writel(mk_pmb_addr_val(0x80), PMB_ADDR_BASE(4));
 144        writel(mk_pmb_data_val(0x40, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(4));
 145        writel(mk_pmb_addr_val(0x90), PMB_ADDR_BASE(6));
 146        writel(mk_pmb_data_val(0x50, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(6));
 147        writel(mk_pmb_addr_val(0x98), PMB_ADDR_BASE(7));
 148        writel(mk_pmb_data_val(0x58, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(7));
 149}
 150
 151int board_init(void)
 152{
 153        init_gpio();
 154        set_pmb_on_board_init();
 155
 156        init_usb_phy();
 157        init_gether_mdio();
 158
 159        return 0;
 160}
 161
 162int dram_init(void)
 163{
 164        DECLARE_GLOBAL_DATA_PTR;
 165
 166        gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
 167        gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
 168        printf("DRAM:  %dMB\n", CONFIG_SYS_SDRAM_SIZE / (1024 * 1024));
 169
 170        return 0;
 171}
 172
 173int board_mmc_init(bd_t *bis)
 174{
 175        struct gpio_regs *gpio = GPIO_BASE;
 176
 177        writew(readw(&gpio->pgcr) | 0x0040, &gpio->pgcr);
 178        writeb(readb(&gpio->pgdr) & ~0x08, &gpio->pgdr); /* Reset */
 179        udelay(1);
 180        writeb(readb(&gpio->pgdr) | 0x08, &gpio->pgdr); /* Release reset */
 181        udelay(200);
 182
 183        return mmcif_mmc_init();
 184}
 185
 186static int get_sh_eth_mac_raw(unsigned char *buf, int size)
 187{
 188        struct spi_flash *spi;
 189        int ret;
 190
 191        spi = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
 192        if (spi == NULL) {
 193                printf("%s: spi_flash probe failed.\n", __func__);
 194                return 1;
 195        }
 196
 197        ret = spi_flash_read(spi, SH7752EVB_ETHERNET_MAC_BASE, size, buf);
 198        if (ret) {
 199                printf("%s: spi_flash read failed.\n", __func__);
 200                spi_flash_free(spi);
 201                return 1;
 202        }
 203        spi_flash_free(spi);
 204
 205        return 0;
 206}
 207
 208static int get_sh_eth_mac(int channel, char *mac_string, unsigned char *buf)
 209{
 210        memcpy(mac_string, &buf[channel * (SH7752EVB_ETHERNET_MAC_SIZE + 1)],
 211                SH7752EVB_ETHERNET_MAC_SIZE);
 212        mac_string[SH7752EVB_ETHERNET_MAC_SIZE] = 0x00; /* terminate */
 213
 214        return 0;
 215}
 216
 217static void init_ethernet_mac(void)
 218{
 219        char mac_string[64];
 220        char env_string[64];
 221        int i;
 222        unsigned char *buf;
 223
 224        buf = malloc(256);
 225        if (!buf) {
 226                printf("%s: malloc failed.\n", __func__);
 227                return;
 228        }
 229        get_sh_eth_mac_raw(buf, 256);
 230
 231        /* Gigabit Ethernet */
 232        for (i = 0; i < SH7752EVB_ETHERNET_NUM_CH; i++) {
 233                get_sh_eth_mac(i, mac_string, buf);
 234                if (i == 0)
 235                        setenv("ethaddr", mac_string);
 236                else {
 237                        sprintf(env_string, "eth%daddr", i);
 238                        setenv(env_string, mac_string);
 239                }
 240                set_mac_to_sh_giga_eth_register(i, mac_string);
 241        }
 242
 243        free(buf);
 244}
 245
 246int board_late_init(void)
 247{
 248        init_ethernet_mac();
 249
 250        return 0;
 251}
 252
 253int do_write_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 254{
 255        int i, ret;
 256        char mac_string[256];
 257        struct spi_flash *spi;
 258        unsigned char *buf;
 259
 260        if (argc != 3) {
 261                buf = malloc(256);
 262                if (!buf) {
 263                        printf("%s: malloc failed.\n", __func__);
 264                        return 1;
 265                }
 266
 267                get_sh_eth_mac_raw(buf, 256);
 268
 269                /* print current MAC address */
 270                for (i = 0; i < SH7752EVB_ETHERNET_NUM_CH; i++) {
 271                        get_sh_eth_mac(i, mac_string, buf);
 272                        printf("GETHERC ch%d = %s\n", i, mac_string);
 273                }
 274                free(buf);
 275                return 0;
 276        }
 277
 278        /* new setting */
 279        memset(mac_string, 0xff, sizeof(mac_string));
 280        sprintf(mac_string, "%s\t%s",
 281                argv[1], argv[2]);
 282
 283        /* write MAC data to SPI rom */
 284        spi = spi_flash_probe(0, 0, 1000000, SPI_MODE_3);
 285        if (!spi) {
 286                printf("%s: spi_flash probe failed.\n", __func__);
 287                return 1;
 288        }
 289
 290        ret = spi_flash_erase(spi, SH7752EVB_ETHERNET_MAC_BASE_SPI,
 291                                SH7752EVB_SPI_SECTOR_SIZE);
 292        if (ret) {
 293                printf("%s: spi_flash erase failed.\n", __func__);
 294                return 1;
 295        }
 296
 297        ret = spi_flash_write(spi, SH7752EVB_ETHERNET_MAC_BASE_SPI,
 298                                sizeof(mac_string), mac_string);
 299        if (ret) {
 300                printf("%s: spi_flash write failed.\n", __func__);
 301                spi_flash_free(spi);
 302                return 1;
 303        }
 304        spi_flash_free(spi);
 305
 306        puts("The writing of the MAC address to SPI ROM was completed.\n");
 307
 308        return 0;
 309}
 310
 311U_BOOT_CMD(
 312        write_mac,      3,      1,      do_write_mac,
 313        "write MAC address for GETHERC",
 314        "[GETHERC ch0] [GETHERC ch1]\n"
 315);
 316
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.