// SPDX-License-Identifier: GPL-2.0+
/*
 * K3: Common Architecture initialization
 *
 * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
 *      Lokesh Vutla <lokeshvutla@ti.com>
 */

#include <common.h>
#include <cpu_func.h>
#include <image.h>
#include <init.h>
#include <log.h>
#include <spl.h>
#include "common.h"
#include <dm.h>
#include <remoteproc.h>
#include <asm/cache.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include <fdt_support.h>
#include <asm/arch/sys_proto.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <fs_loader.h>
#include <fs.h>
#include <env.h>
#include <elf.h>
#include <soc.h>

struct ti_sci_handle *get_ti_sci_handle(void)
{
        struct udevice *dev;
        int ret;

        ret = uclass_get_device_by_driver(UCLASS_FIRMWARE,
                                          DM_GET_DRIVER(ti_sci), &dev);
        if (ret)
                panic("Failed to get SYSFW (%d)\n", ret);

        return (struct ti_sci_handle *)ti_sci_get_handle_from_sysfw(dev);
}

void k3_sysfw_print_ver(void)
{
        struct ti_sci_handle *ti_sci = get_ti_sci_handle();
        char fw_desc[sizeof(ti_sci->version.firmware_description) + 1];

        /*
         * Output System Firmware version info. Note that since the
         * 'firmware_description' field is not guaranteed to be zero-
         * terminated we manually add a \0 terminator if needed. Further
         * note that we intentionally no longer rely on the extended
         * printf() formatter '%.*s' to not having to require a more
         * full-featured printf() implementation.
         */
        strncpy(fw_desc, ti_sci->version.firmware_description,
                sizeof(ti_sci->version.firmware_description));
        fw_desc[sizeof(fw_desc) - 1] = '\0';

        printf("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n",
               ti_sci->version.abi_major, ti_sci->version.abi_minor,
               ti_sci->version.firmware_revision, fw_desc);
}

void mmr_unlock(phys_addr_t base, u32 partition)
{
        /* Translate the base address */
        phys_addr_t part_base = base + partition * CTRL_MMR0_PARTITION_SIZE;

        /* Unlock the requested partition if locked using two-step sequence */
        writel(CTRLMMR_LOCK_KICK0_UNLOCK_VAL, part_base + CTRLMMR_LOCK_KICK0);
        writel(CTRLMMR_LOCK_KICK1_UNLOCK_VAL, part_base + CTRLMMR_LOCK_KICK1);
}

bool is_rom_loaded_sysfw(struct rom_extended_boot_data *data)
{
        if (strncmp(data->header, K3_ROM_BOOT_HEADER_MAGIC, 7))
                return false;

        return data->num_components > 1;
}

DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_K3_EARLY_CONS
int early_console_init(void)
{
        struct udevice *dev;
        int ret;

        gd->baudrate = CONFIG_BAUDRATE;

        ret = uclass_get_device_by_seq(UCLASS_SERIAL, CONFIG_K3_EARLY_CONS_IDX,
                                       &dev);
        if (ret) {
                printf("Error getting serial dev for early console! (%d)\n",
                       ret);
                return ret;
        }

        gd->cur_serial_dev = dev;
        gd->flags |= GD_FLG_SERIAL_READY;
        gd->have_console = 1;

        return 0;
}
#endif

#ifdef CONFIG_SYS_K3_SPL_ATF

void init_env(void)
{
#ifdef CONFIG_SPL_ENV_SUPPORT
        char *part;

        env_init();
        env_relocate();
        switch (spl_boot_device()) {
        case BOOT_DEVICE_MMC2:
                part = env_get("bootpart");
                env_set("storage_interface", "mmc");
                env_set("fw_dev_part", part);
                break;
        case BOOT_DEVICE_SPI:
                env_set("storage_interface", "ubi");
                env_set("fw_ubi_mtdpart", "UBI");
                env_set("fw_ubi_volume", "UBI0");
                break;
        default:
                printf("%s from device %u not supported!\n",
                       __func__, spl_boot_device());
                return;
        }
#endif
}

#ifdef CONFIG_FS_LOADER
int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr)
{
        struct udevice *fsdev;
        char *name = NULL;
        int size = 0;

        *loadaddr = 0;
#ifdef CONFIG_SPL_ENV_SUPPORT
        switch (spl_boot_device()) {
        case BOOT_DEVICE_MMC2:
                name = env_get(name_fw);
                *loadaddr = env_get_hex(name_loadaddr, *loadaddr);
                break;
        default:
                printf("Loading rproc fw image from device %u not supported!\n",
                       spl_boot_device());
                return 0;
        }
#endif
        if (!*loadaddr)
                return 0;

        if (!uclass_get_device(UCLASS_FS_FIRMWARE_LOADER, 0, &fsdev)) {
                size = request_firmware_into_buf(fsdev, name, (void *)*loadaddr,
                                                 0, 0);
        }

        return size;
}
#else
int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr)
{
        return 0;
}
#endif

__weak void start_non_linux_remote_cores(void)
{
}

void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
{
        typedef void __noreturn (*image_entry_noargs_t)(void);
        struct ti_sci_handle *ti_sci = get_ti_sci_handle();
        u32 loadaddr = 0;
        int ret, size;

        /* Release all the exclusive devices held by SPL before starting ATF */
        ti_sci->ops.dev_ops.release_exclusive_devices(ti_sci);

        ret = rproc_init();
        if (ret)
                panic("rproc failed to be initialized (%d)\n", ret);

        init_env();
        start_non_linux_remote_cores();
        size = load_firmware("name_mcur5f0_0fw", "addr_mcur5f0_0load",
                             &loadaddr);


        /*
         * It is assumed that remoteproc device 1 is the corresponding
         * Cortex-A core which runs ATF. Make sure DT reflects the same.
         */
        ret = rproc_load(1, spl_image->entry_point, 0x200);
        if (ret)
                panic("%s: ATF failed to load on rproc (%d)\n", __func__, ret);

        /* Add an extra newline to differentiate the ATF logs from SPL */
        printf("Starting ATF on ARM64 core...\n\n");

        ret = rproc_start(1);
        if (ret)
                panic("%s: ATF failed to start on rproc (%d)\n", __func__, ret);
        if (!(size > 0 && valid_elf_image(loadaddr))) {
                debug("Shutting down...\n");
                release_resources_for_core_shutdown();

                while (1)
                        asm volatile("wfe");
        }

        image_entry_noargs_t image_entry =
                (image_entry_noargs_t)load_elf_image_phdr(loadaddr);

        image_entry();
}
#endif

#if defined(CONFIG_OF_LIBFDT)
int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name)
{
        u64 msmc_start = 0, msmc_end = 0, msmc_size, reg[2];
        struct ti_sci_handle *ti_sci = get_ti_sci_handle();
        int ret, node, subnode, len, prev_node;
        u32 range[4], addr, size;
        const fdt32_t *sub_reg;

        ti_sci->ops.core_ops.query_msmc(ti_sci, &msmc_start, &msmc_end);
        msmc_size = msmc_end - msmc_start + 1;
        debug("%s: msmc_start = 0x%llx, msmc_size = 0x%llx\n", __func__,
              msmc_start, msmc_size);

        /* find or create "msmc_sram node */
        ret = fdt_path_offset(blob, parent_path);
        if (ret < 0)
                return ret;

        node = fdt_find_or_add_subnode(blob, ret, node_name);
        if (node < 0)
                return node;

        ret = fdt_setprop_string(blob, node, "compatible", "mmio-sram");
        if (ret < 0)
                return ret;

        reg[0] = cpu_to_fdt64(msmc_start);
        reg[1] = cpu_to_fdt64(msmc_size);
        ret = fdt_setprop(blob, node, "reg", reg, sizeof(reg));
        if (ret < 0)
                return ret;

        fdt_setprop_cell(blob, node, "#address-cells", 1);
        fdt_setprop_cell(blob, node, "#size-cells", 1);

        range[0] = 0;
        range[1] = cpu_to_fdt32(msmc_start >> 32);
        range[2] = cpu_to_fdt32(msmc_start & 0xffffffff);
        range[3] = cpu_to_fdt32(msmc_size);
        ret = fdt_setprop(blob, node, "ranges", range, sizeof(range));
        if (ret < 0)
                return ret;

        subnode = fdt_first_subnode(blob, node);
        prev_node = 0;

        /* Look for invalid subnodes and delete them */
        while (subnode >= 0) {
                sub_reg = fdt_getprop(blob, subnode, "reg", &len);
                addr = fdt_read_number(sub_reg, 1);
                sub_reg++;
                size = fdt_read_number(sub_reg, 1);
                debug("%s: subnode = %d, addr = 0x%x. size = 0x%x\n", __func__,
                      subnode, addr, size);
                if (addr + size > msmc_size ||
                    !strncmp(fdt_get_name(blob, subnode, &len), "sysfw", 5) ||
                    !strncmp(fdt_get_name(blob, subnode, &len), "l3cache", 7)) {
                        fdt_del_node(blob, subnode);
                        debug("%s: deleting subnode %d\n", __func__, subnode);
                        if (!prev_node)
                                subnode = fdt_first_subnode(blob, node);
                        else
                                subnode = fdt_next_subnode(blob, prev_node);
                } else {
                        prev_node = subnode;
                        subnode = fdt_next_subnode(blob, prev_node);
                }
        }

        return 0;
}

int fdt_disable_node(void *blob, char *node_path)
{
        int offs;
        int ret;

        offs = fdt_path_offset(blob, node_path);
        if (offs < 0) {
                printf("Node %s not found.\n", node_path);
                return offs;
        }
        ret = fdt_setprop_string(blob, offs, "status", "disabled");
        if (ret < 0) {
                printf("Could not add status property to node %s: %s\n",
                       node_path, fdt_strerror(ret));
                return ret;
        }
        return 0;
}

#endif

#ifndef CONFIG_SYSRESET
void reset_cpu(ulong ignored)
{
}
#endif

#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
        struct udevice *soc;
        char name[64];
        int ret;

        printf("SoC:   ");

        ret = soc_get(&soc);
        if (ret) {
                printf("UNKNOWN\n");
                return 0;
        }

        ret = soc_get_family(soc, name, 64);
        if (!ret) {
                printf("%s ", name);
        }

        ret = soc_get_revision(soc, name, 64);
        if (!ret) {
                printf("%s\n", name);
        }

        return 0;
}
#endif

bool soc_is_j721e(void)
{
        u32 soc;

        soc = (readl(CTRLMMR_WKUP_JTAG_ID) &
                JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT;

        return soc == J721E;
}

bool soc_is_j7200(void)
{
        u32 soc;

        soc = (readl(CTRLMMR_WKUP_JTAG_ID) &
                JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT;

        return soc == J7200;
}

#ifdef CONFIG_ARM64
void board_prep_linux(bootm_headers_t *images)
{
        debug("Linux kernel Image start = 0x%lx end = 0x%lx\n",
              images->os.start, images->os.end);
        __asm_flush_dcache_range(images->os.start,
                                 ROUND(images->os.end,
                                       CONFIG_SYS_CACHELINE_SIZE));
}
#endif

#ifdef CONFIG_CPU_V7R
void disable_linefill_optimization(void)
{
        u32 actlr;

        /*
         * On K3 devices there are 2 conditions where R5F can deadlock:
         * 1.When software is performing series of store operations to
         *   cacheable write back/write allocate memory region and later
         *   on software execute barrier operation (DSB or DMB). R5F may
         *   hang at the barrier instruction.
         * 2.When software is performing a mix of load and store operations
         *   within a tight loop and store operations are all writing to
         *   cacheable write back/write allocates memory regions, R5F may
         *   hang at one of the load instruction.
         *
         * To avoid the above two conditions disable linefill optimization
         * inside Cortex R5F.
         */
        asm("mrc p15, 0, %0, c1, c0, 1" : "=r" (actlr));
        actlr |= (1 << 13); /* Set DLFO bit  */
        asm("mcr p15, 0, %0, c1, c0, 1" : : "r" (actlr));
}
#endif

void remove_fwl_configs(struct fwl_data *fwl_data, size_t fwl_data_size)
{
        struct ti_sci_msg_fwl_region region;
        struct ti_sci_fwl_ops *fwl_ops;
        struct ti_sci_handle *ti_sci;
        size_t i, j;

        ti_sci = get_ti_sci_handle();
        fwl_ops = &ti_sci->ops.fwl_ops;
        for (i = 0; i < fwl_data_size; i++) {
                for (j = 0; j <  fwl_data[i].regions; j++) {
                        region.fwl_id = fwl_data[i].fwl_id;
                        region.region = j;
                        region.n_permission_regs = 3;

                        fwl_ops->get_fwl_region(ti_sci, &region);

                        if (region.control != 0) {
                                pr_debug("Attempting to disable firewall %5d (%25s)\n",
                                         region.fwl_id, fwl_data[i].name);
                                region.control = 0;

                                if (fwl_ops->set_fwl_region(ti_sci, &region))
                                        pr_err("Could not disable firewall %5d (%25s)\n",
                                               region.fwl_id, fwl_data[i].name);
                        }
                }
        }
}

void spl_enable_dcache(void)
{
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
        phys_addr_t ram_top = CONFIG_SYS_SDRAM_BASE;

        dram_init_banksize();

        /* reserve TLB table */
        gd->arch.tlb_size = PGTABLE_SIZE;

        ram_top += get_effective_memsize();
        /* keep ram_top in the 32-bit address space */
        if (ram_top >= 0x100000000)
                ram_top = (phys_addr_t) 0x100000000;

        gd->arch.tlb_addr = ram_top - gd->arch.tlb_size;
        debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
              gd->arch.tlb_addr + gd->arch.tlb_size);

        dcache_enable();
#endif
}

#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
void spl_board_prepare_for_boot(void)
{
        dcache_disable();
}

void spl_board_prepare_for_linux(void)
{
        dcache_disable();
}
#endif