LXR uboot/arch/arm/mach-k3/am642

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * AM642: SoC specific initialization
   4 *
   5 * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
   6 *      Keerthy <j-keerthy@ti.com>
   7 *      Dave Gerlach <d-gerlach@ti.com>
   8 */
   9
  10#include <common.h>
  11#include <fdt_support.h>
  12#include <spl.h>
  13#include <asm/io.h>
  14#include <asm/arch/hardware.h>
  15#include <asm/arch/sysfw-loader.h>
  16#include <asm/arch/sys_proto.h>
  17#include "common.h"
  18#include <asm/arch/sys_proto.h>
  19#include <linux/soc/ti/ti_sci_protocol.h>
  20#include <dm.h>
  21#include <dm/uclass-internal.h>
  22#include <dm/pinctrl.h>
  23#include <mmc.h>
  24#include <dm/root.h>
  25
  26#if defined(CONFIG_SPL_BUILD)
  27
  28static void ctrl_mmr_unlock(void)
  29{
  30        /* Unlock all PADCFG_MMR1 module registers */
  31        mmr_unlock(PADCFG_MMR1_BASE, 1);
  32
  33        /* Unlock all CTRL_MMR0 module registers */
  34        mmr_unlock(CTRL_MMR0_BASE, 0);
  35        mmr_unlock(CTRL_MMR0_BASE, 1);
  36        mmr_unlock(CTRL_MMR0_BASE, 2);
  37        mmr_unlock(CTRL_MMR0_BASE, 3);
  38        mmr_unlock(CTRL_MMR0_BASE, 5);
  39        mmr_unlock(CTRL_MMR0_BASE, 6);
  40}
  41
  42/*
  43 * This uninitialized global variable would normal end up in the .bss section,
  44 * but the .bss is cleared between writing and reading this variable, so move
  45 * it to the .data section.
  46 */
  47u32 bootindex __section(".data");
  48static struct rom_extended_boot_data bootdata __section(".data");
  49
  50static void store_boot_info_from_rom(void)
  51{
  52        bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
  53        memcpy(&bootdata, (uintptr_t *)ROM_ENTENDED_BOOT_DATA_INFO,
  54               sizeof(struct rom_extended_boot_data));
  55}
  56
  57#if defined(CONFIG_K3_LOAD_SYSFW) && CONFIG_IS_ENABLED(DM_MMC)
  58void k3_mmc_stop_clock(void)
  59{
  60        if (spl_boot_device() == BOOT_DEVICE_MMC1) {
  61                struct mmc *mmc = find_mmc_device(0);
  62
  63                if (!mmc)
  64                        return;
  65
  66                mmc->saved_clock = mmc->clock;
  67                mmc_set_clock(mmc, 0, true);
  68        }
  69}
  70
  71void k3_mmc_restart_clock(void)
  72{
  73        if (spl_boot_device() == BOOT_DEVICE_MMC1) {
  74                struct mmc *mmc = find_mmc_device(0);
  75
  76                if (!mmc)
  77                        return;
  78
  79                mmc_set_clock(mmc, mmc->saved_clock, false);
  80        }
  81}
  82#else
  83void k3_mmc_stop_clock(void) {}
  84void k3_mmc_restart_clock(void) {}
  85#endif
  86
  87#ifdef CONFIG_SPL_OF_LIST
  88void do_dt_magic(void)
  89{
  90        int ret, rescan;
  91
  92        if (IS_ENABLED(CONFIG_TI_I2C_BOARD_DETECT))
  93                do_board_detect();
  94
  95        /*
  96         * Board detection has been done.
  97         * Let us see if another dtb wouldn't be a better match
  98         * for our board
  99         */
 100        if (IS_ENABLED(CONFIG_CPU_V7R)) {
 101                ret = fdtdec_resetup(&rescan);
 102                if (!ret && rescan) {
 103                        dm_uninit();
 104                        dm_init_and_scan(true);
 105                }
 106        }
 107}
 108#endif
 109
 110#if CONFIG_IS_ENABLED(USB_STORAGE)
 111static int fixup_usb_boot(const void *fdt_blob)
 112{
 113        int ret = 0;
 114
 115        switch (spl_boot_device()) {
 116        case BOOT_DEVICE_USB:
 117                /*
 118                 * If the boot mode is host, fixup the dr_mode to host
 119                 * before cdns3 bind takes place
 120                 */
 121                ret = fdt_find_and_setprop((void *)fdt_blob,
 122                                           "/bus@f4000/cdns-usb@f900000/usb@f400000",
 123                                           "dr_mode", "host", 5, 0);
 124                if (ret)
 125                        printf("%s: fdt_find_and_setprop() failed:%d\n",
 126                               __func__, ret);
 127                fallthrough;
 128        default:
 129                break;
 130        }
 131
 132        return ret;
 133}
 134
 135int fdtdec_board_setup(const void *fdt_blob)
 136{
 137        /* Can use the pointer from the function parameters */
 138        return fixup_usb_boot(fdt_blob);
 139}
 140#endif
 141
 142void board_init_f(ulong dummy)
 143{
 144#if defined(CONFIG_K3_LOAD_SYSFW) || defined(CONFIG_K3_AM64_DDRSS)
 145        struct udevice *dev;
 146        int ret;
 147#endif
 148
 149#if defined(CONFIG_CPU_V7R)
 150        setup_k3_mpu_regions();
 151#endif
 152
 153        /*
 154         * Cannot delay this further as there is a chance that
 155         * K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
 156         */
 157        store_boot_info_from_rom();
 158
 159        ctrl_mmr_unlock();
 160
 161        /* Init DM early */
 162        spl_early_init();
 163
 164        preloader_console_init();
 165
 166        do_dt_magic();
 167
 168#if defined(CONFIG_K3_LOAD_SYSFW)
 169        /*
 170         * Process pinctrl for serial3 a.k.a. MAIN UART1 module and continue
 171         * regardless of the result of pinctrl. Do this without probing the
 172         * device, but instead by searching the device that would request the
 173         * given sequence number if probed. The UART will be used by the system
 174         * firmware (SYSFW) image for various purposes and SYSFW depends on us
 175         * to initialize its pin settings.
 176         */
 177        ret = uclass_find_device_by_seq(UCLASS_SERIAL, 3, &dev);
 178        if (!ret)
 179                pinctrl_select_state(dev, "default");
 180
 181        /*
 182         * Load, start up, and configure system controller firmware.
 183         * This will determine whether or not ROM has already loaded
 184         * system firmware and if so, will only perform needed config
 185         * and not attempt to load firmware again.
 186         */
 187        k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata), k3_mmc_stop_clock,
 188                        k3_mmc_restart_clock);
 189#endif
 190
 191        /* Output System Firmware version info */
 192        k3_sysfw_print_ver();
 193
 194#if defined(CONFIG_K3_AM64_DDRSS)
 195        ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 196        if (ret)
 197                panic("DRAM init failed: %d\n", ret);
 198#endif
 199}
 200
 201u32 spl_mmc_boot_mode(const u32 boot_device)
 202{
 203        switch (boot_device) {
 204        case BOOT_DEVICE_MMC1:
 205                return MMCSD_MODE_EMMCBOOT;
 206
 207        case BOOT_DEVICE_MMC2:
 208                return MMCSD_MODE_FS;
 209
 210        default:
 211                return MMCSD_MODE_RAW;
 212        }
 213}
 214
 215static u32 __get_backup_bootmedia(u32 main_devstat)
 216{
 217        u32 bkup_bootmode =
 218            (main_devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >>
 219            MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT;
 220        u32 bkup_bootmode_cfg =
 221            (main_devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_MASK) >>
 222            MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_SHIFT;
 223
 224        switch (bkup_bootmode) {
 225        case BACKUP_BOOT_DEVICE_UART:
 226                return BOOT_DEVICE_UART;
 227
 228        case BACKUP_BOOT_DEVICE_DFU:
 229                if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK)
 230                        return BOOT_DEVICE_USB;
 231                return BOOT_DEVICE_DFU;
 232
 233
 234        case BACKUP_BOOT_DEVICE_ETHERNET:
 235                return BOOT_DEVICE_ETHERNET;
 236
 237        case BACKUP_BOOT_DEVICE_MMC:
 238                if (bkup_bootmode_cfg)
 239                        return BOOT_DEVICE_MMC2;
 240                return BOOT_DEVICE_MMC1;
 241
 242        case BACKUP_BOOT_DEVICE_SPI:
 243                return BOOT_DEVICE_SPI;
 244
 245        case BACKUP_BOOT_DEVICE_I2C:
 246                return BOOT_DEVICE_I2C;
 247        };
 248
 249        return BOOT_DEVICE_RAM;
 250}
 251
 252static u32 __get_primary_bootmedia(u32 main_devstat)
 253{
 254        u32 bootmode = (main_devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
 255            MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
 256        u32 bootmode_cfg =
 257            (main_devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
 258            MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;
 259
 260        switch (bootmode) {
 261        case BOOT_DEVICE_OSPI:
 262                fallthrough;
 263        case BOOT_DEVICE_QSPI:
 264                fallthrough;
 265        case BOOT_DEVICE_XSPI:
 266                fallthrough;
 267        case BOOT_DEVICE_SPI:
 268                return BOOT_DEVICE_SPI;
 269
 270        case BOOT_DEVICE_ETHERNET_RGMII:
 271                fallthrough;
 272        case BOOT_DEVICE_ETHERNET_RMII:
 273                return BOOT_DEVICE_ETHERNET;
 274
 275        case BOOT_DEVICE_EMMC:
 276                return BOOT_DEVICE_MMC1;
 277
 278        case BOOT_DEVICE_MMC:
 279                if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK) >>
 280                     MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT)
 281                        return BOOT_DEVICE_MMC2;
 282                return BOOT_DEVICE_MMC1;
 283
 284        case BOOT_DEVICE_DFU:
 285                if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK) >>
 286                    MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT)
 287                        return BOOT_DEVICE_USB;
 288                return BOOT_DEVICE_DFU;
 289
 290        case BOOT_DEVICE_NOBOOT:
 291                return BOOT_DEVICE_RAM;
 292        }
 293
 294        return bootmode;
 295}
 296
 297u32 spl_boot_device(void)
 298{
 299        u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
 300
 301        if (bootindex == K3_PRIMARY_BOOTMODE)
 302                return __get_primary_bootmedia(devstat);
 303        else
 304                return __get_backup_bootmedia(devstat);
 305}
 306#endif
 307
 308#if defined(CONFIG_SYS_K3_SPL_ATF)
 309
 310#define AM64X_DEV_RTI8                  127
 311#define AM64X_DEV_RTI9                  128
 312#define AM64X_DEV_R5FSS0_CORE0          121
 313#define AM64X_DEV_R5FSS0_CORE1          122
 314
 315void release_resources_for_core_shutdown(void)
 316{
 317        struct ti_sci_handle *ti_sci = get_ti_sci_handle();
 318        struct ti_sci_dev_ops *dev_ops = &ti_sci->ops.dev_ops;
 319        struct ti_sci_proc_ops *proc_ops = &ti_sci->ops.proc_ops;
 320        int ret;
 321        u32 i;
 322
 323        const u32 put_device_ids[] = {
 324                AM64X_DEV_RTI9,
 325                AM64X_DEV_RTI8,
 326        };
 327
 328        /* Iterate through list of devices to put (shutdown) */
 329        for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
 330                u32 id = put_device_ids[i];
 331
 332                ret = dev_ops->put_device(ti_sci, id);
 333                if (ret)
 334                        panic("Failed to put device %u (%d)\n", id, ret);
 335        }
 336
 337        const u32 put_core_ids[] = {
 338                AM64X_DEV_R5FSS0_CORE1,
 339                AM64X_DEV_R5FSS0_CORE0, /* Handle CPU0 after CPU1 */
 340        };
 341
 342        /* Iterate through list of cores to put (shutdown) */
 343        for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
 344                u32 id = put_core_ids[i];
 345
 346                /*
 347                 * Queue up the core shutdown request. Note that this call
 348                 * needs to be followed up by an actual invocation of an WFE
 349                 * or WFI CPU instruction.
 350                 */
 351                ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
 352                if (ret)
 353                        panic("Failed sending core %u shutdown message (%d)\n",
 354                              id, ret);
 355        }
 356}
 357#endif
 358