LXR uboot/board/ti/panda/panda.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2010
   4 * Texas Instruments Incorporated, <www.ti.com>
   5 * Steve Sakoman  <steve@sakoman.com>
   6 */
   7#include <common.h>
   8#include <init.h>
   9#include <log.h>
  10#include <net.h>
  11#include <serial.h>
  12#include <asm/global_data.h>
  13#include <asm/mach-types.h>
  14#include <asm/arch/sys_proto.h>
  15#include <asm/arch/mmc_host_def.h>
  16#include <asm/arch/clock.h>
  17#include <asm/arch/gpio.h>
  18#include <asm/gpio.h>
  19#include <env.h>
  20#include <twl6030.h>
  21
  22#include "panda_mux_data.h"
  23
  24#define PANDA_ULPI_PHY_TYPE_GPIO       182
  25#define PANDA_BOARD_ID_1_GPIO          101
  26#define PANDA_ES_BOARD_ID_1_GPIO        48
  27#define PANDA_BOARD_ID_2_GPIO          171
  28#define PANDA_ES_BOARD_ID_3_GPIO         3
  29#define PANDA_ES_BOARD_ID_4_GPIO         2
  30
  31DECLARE_GLOBAL_DATA_PTR;
  32
  33const struct omap_sysinfo sysinfo = {
  34        "Board: OMAP4 Panda\n"
  35};
  36
  37struct omap4_scrm_regs *const scrm = (struct omap4_scrm_regs *)0x4a30a000;
  38
  39/**
  40 * @brief board_init
  41 *
  42 * Return: 0
  43 */
  44int board_init(void)
  45{
  46        gpmc_init();
  47
  48        gd->bd->bi_arch_number = MACH_TYPE_OMAP4_PANDA;
  49        gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
  50
  51        return 0;
  52}
  53
  54#if defined(CONFIG_SPL_OS_BOOT)
  55int spl_start_uboot(void)
  56{
  57        /* break into full u-boot on 'c' */
  58        if (serial_tstc() && serial_getc() == 'c')
  59                return 1;
  60
  61        return 0;
  62}
  63#endif /* CONFIG_SPL_OS_BOOT */
  64
  65int board_eth_init(struct bd_info *bis)
  66{
  67        return 0;
  68}
  69
  70/*
  71* Routine: get_board_revision
  72* Description: Detect if we are running on a panda revision A1-A6,
  73*              or an ES panda board. This can be done by reading
  74*              the level of GPIOs and checking the processor revisions.
  75*              This should result in:
  76*                       Panda 4430:
  77*              GPIO171, GPIO101, GPIO182: 0 1 1 => A1-A5
  78*              GPIO171, GPIO101, GPIO182: 1 0 1 => A6
  79*                       Panda ES:
  80*              GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 0 1 1 => B1/B2
  81*              GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 1 1 1 => B3
  82*/
  83int get_board_revision(void)
  84{
  85        int board_id0, board_id1, board_id2;
  86        int board_id3, board_id4;
  87        int board_id;
  88
  89        int processor_rev = omap_revision();
  90
  91        /* Setup the mux for the common board ID pins (gpio 171 and 182) */
  92        writew((IEN | M3), (*ctrl)->control_padconf_core_base + UNIPRO_TX0);
  93        writew((IEN | M3), (*ctrl)->control_padconf_core_base + FREF_CLK2_OUT);
  94
  95        board_id0 = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
  96        board_id2 = gpio_get_value(PANDA_BOARD_ID_2_GPIO);
  97
  98        if ((processor_rev >= OMAP4460_ES1_0 &&
  99             processor_rev <= OMAP4460_ES1_1)) {
 100                /*
 101                 * Setup the mux for the ES specific board ID pins (gpio 101,
 102                 * 2 and 3.
 103                 */
 104                writew((IEN | M3), (*ctrl)->control_padconf_core_base +
 105                                GPMC_A24);
 106                writew((IEN | M3), (*ctrl)->control_padconf_core_base +
 107                                UNIPRO_RY0);
 108                writew((IEN | M3), (*ctrl)->control_padconf_core_base +
 109                                UNIPRO_RX1);
 110
 111                board_id1 = gpio_get_value(PANDA_ES_BOARD_ID_1_GPIO);
 112                board_id3 = gpio_get_value(PANDA_ES_BOARD_ID_3_GPIO);
 113                board_id4 = gpio_get_value(PANDA_ES_BOARD_ID_4_GPIO);
 114
 115#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 116                env_set("board_name", "panda-es");
 117#endif
 118                board_id = ((board_id4 << 4) | (board_id3 << 3) |
 119                        (board_id2 << 2) | (board_id1 << 1) | (board_id0));
 120        } else {
 121                /* Setup the mux for the Ax specific board ID pins (gpio 101) */
 122                writew((IEN | M3), (*ctrl)->control_padconf_core_base +
 123                                FREF_CLK2_OUT);
 124
 125                board_id1 = gpio_get_value(PANDA_BOARD_ID_1_GPIO);
 126                board_id = ((board_id2 << 2) | (board_id1 << 1) | (board_id0));
 127
 128#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 129                if ((board_id >= 0x3) && (processor_rev == OMAP4430_ES2_3))
 130                        env_set("board_name", "panda-a4");
 131#endif
 132        }
 133
 134        return board_id;
 135}
 136
 137/**
 138 * is_panda_es_rev_b3() - Detect if we are running on rev B3 of panda board ES
 139 *
 140 *
 141 * Detect if we are running on B3 version of ES panda board,
 142 * This can be done by reading the level of GPIO 171 and checking the
 143 * processor revisions.
 144 * GPIO171: 1 => Panda ES Rev B3
 145 *
 146 * Return : return 1 if Panda ES Rev B3 , else return 0
 147 */
 148u8 is_panda_es_rev_b3(void)
 149{
 150        int processor_rev = omap_revision();
 151        int ret = 0;
 152
 153        if ((processor_rev >= OMAP4460_ES1_0 &&
 154             processor_rev <= OMAP4460_ES1_1)) {
 155
 156                /* Setup the mux for the common board ID pins (gpio 171) */
 157                writew((IEN | M3),
 158                        (*ctrl)->control_padconf_core_base + UNIPRO_TX0);
 159
 160                /* if processor_rev is panda ES and GPIO171 is 1,it is rev b3 */
 161                ret = gpio_get_value(PANDA_BOARD_ID_2_GPIO);
 162        }
 163        return ret;
 164}
 165
 166#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
 167/*
 168 * emif_get_reg_dump() - emif_get_reg_dump strong function
 169 *
 170 * @emif_nr - emif base
 171 * @regs - reg dump of timing values
 172 *
 173 * Strong function to override emif_get_reg_dump weak function in sdram_elpida.c
 174 */
 175void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
 176{
 177        u32 omap4_rev = omap_revision();
 178
 179        /* Same devices and geometry on both EMIFs */
 180        if (omap4_rev == OMAP4430_ES1_0)
 181                *regs = &emif_regs_elpida_380_mhz_1cs;
 182        else if (omap4_rev == OMAP4430_ES2_0)
 183                *regs = &emif_regs_elpida_200_mhz_2cs;
 184        else if (omap4_rev == OMAP4430_ES2_3)
 185                *regs = &emif_regs_elpida_400_mhz_1cs;
 186        else if (omap4_rev < OMAP4470_ES1_0) {
 187                if(is_panda_es_rev_b3())
 188                        *regs = &emif_regs_elpida_400_mhz_1cs;
 189                else
 190                        *regs = &emif_regs_elpida_400_mhz_2cs;
 191        }
 192        else
 193                *regs = &emif_regs_elpida_400_mhz_1cs;
 194}
 195
 196void emif_get_dmm_regs(const struct dmm_lisa_map_regs
 197                                                **dmm_lisa_regs)
 198{
 199        u32 omap_rev = omap_revision();
 200
 201        if (omap_rev == OMAP4430_ES1_0)
 202                *dmm_lisa_regs = &lisa_map_2G_x_1_x_2;
 203        else if (omap_rev == OMAP4430_ES2_3)
 204                *dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
 205        else if (omap_rev < OMAP4460_ES1_0)
 206                *dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
 207        else
 208                *dmm_lisa_regs = &ma_lisa_map_2G_x_2_x_2;
 209}
 210
 211#endif
 212
 213/**
 214 * @brief misc_init_r - Configure Panda board specific configurations
 215 * such as power configurations, ethernet initialization as phase2 of
 216 * boot sequence
 217 *
 218 * Return: 0
 219 */
 220int misc_init_r(void)
 221{
 222        int phy_type;
 223        u32 auxclk, altclksrc;
 224
 225        /* EHCI is not supported on ES1.0 */
 226        if (omap_revision() == OMAP4430_ES1_0)
 227                return 0;
 228
 229        get_board_revision();
 230
 231        gpio_direction_input(PANDA_ULPI_PHY_TYPE_GPIO);
 232        phy_type = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
 233
 234        if (phy_type == 1) {
 235                /* ULPI PHY supplied by auxclk3 derived from sys_clk */
 236                debug("ULPI PHY supplied by auxclk3\n");
 237
 238                auxclk = readl(&scrm->auxclk3);
 239                /* Select sys_clk */
 240                auxclk &= ~AUXCLK_SRCSELECT_MASK;
 241                auxclk |=  AUXCLK_SRCSELECT_SYS_CLK << AUXCLK_SRCSELECT_SHIFT;
 242                /* Set the divisor to 2 */
 243                auxclk &= ~AUXCLK_CLKDIV_MASK;
 244                auxclk |= AUXCLK_CLKDIV_2 << AUXCLK_CLKDIV_SHIFT;
 245                /* Request auxilary clock #3 */
 246                auxclk |= AUXCLK_ENABLE_MASK;
 247
 248                writel(auxclk, &scrm->auxclk3);
 249        } else {
 250                /* ULPI PHY supplied by auxclk1 derived from PER dpll */
 251                debug("ULPI PHY supplied by auxclk1\n");
 252
 253                auxclk = readl(&scrm->auxclk1);
 254                /* Select per DPLL */
 255                auxclk &= ~AUXCLK_SRCSELECT_MASK;
 256                auxclk |=  AUXCLK_SRCSELECT_PER_DPLL << AUXCLK_SRCSELECT_SHIFT;
 257                /* Set the divisor to 16 */
 258                auxclk &= ~AUXCLK_CLKDIV_MASK;
 259                auxclk |= AUXCLK_CLKDIV_16 << AUXCLK_CLKDIV_SHIFT;
 260                /* Request auxilary clock #3 */
 261                auxclk |= AUXCLK_ENABLE_MASK;
 262
 263                writel(auxclk, &scrm->auxclk1);
 264        }
 265
 266        altclksrc = readl(&scrm->altclksrc);
 267
 268        /* Activate alternate system clock supplier */
 269        altclksrc &= ~ALTCLKSRC_MODE_MASK;
 270        altclksrc |= ALTCLKSRC_MODE_ACTIVE;
 271
 272        /* enable clocks */
 273        altclksrc |= ALTCLKSRC_ENABLE_INT_MASK | ALTCLKSRC_ENABLE_EXT_MASK;
 274
 275        writel(altclksrc, &scrm->altclksrc);
 276
 277        omap_die_id_usbethaddr();
 278
 279        return 0;
 280}
 281
 282void set_muxconf_regs(void)
 283{
 284        do_set_mux((*ctrl)->control_padconf_core_base,
 285                   core_padconf_array_essential,
 286                   sizeof(core_padconf_array_essential) /
 287                   sizeof(struct pad_conf_entry));
 288
 289        do_set_mux((*ctrl)->control_padconf_wkup_base,
 290                   wkup_padconf_array_essential,
 291                   sizeof(wkup_padconf_array_essential) /
 292                   sizeof(struct pad_conf_entry));
 293
 294        if (omap_revision() >= OMAP4460_ES1_0)
 295                do_set_mux((*ctrl)->control_padconf_wkup_base,
 296                           wkup_padconf_array_essential_4460,
 297                           sizeof(wkup_padconf_array_essential_4460) /
 298                           sizeof(struct pad_conf_entry));
 299}
 300
 301#if defined(CONFIG_MMC)
 302int board_mmc_init(struct bd_info *bis)
 303{
 304        return omap_mmc_init(0, 0, 0, -1, -1);
 305}
 306
 307#if !defined(CONFIG_SPL_BUILD)
 308void board_mmc_power_init(void)
 309{
 310        twl6030_power_mmc_init(0);
 311}
 312#endif
 313#endif
 314
 315#ifdef CONFIG_REVISION_TAG
 316/*
 317 * get_board_rev() - get board revision
 318 */
 319u32 get_board_rev(void)
 320{
 321        return 0x20;
 322}
 323#endif
 324