/*
 * Copyright 2011,2012 Freescale Semiconductor, Inc.
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <netdev.h>
#include <linux/compiler.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/cache.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_law.h>
#include <asm/fsl_serdes.h>
#include <asm/fsl_portals.h>
#include <asm/fsl_liodn.h>
#include <fm_eth.h>

extern void pci_of_setup(void *blob, bd_t *bd);

#include "cpld.h"

DECLARE_GLOBAL_DATA_PTR;

int checkboard(void)
{
        u8 sw;
        struct cpu_type *cpu = gd->arch.cpu;
        unsigned int i;

        printf("Board: %sRDB, ", cpu->name);
        printf("CPLD version: %d.%d ", CPLD_READ(cpld_ver),
                        CPLD_READ(cpld_ver_sub));

        sw = CPLD_READ(fbank_sel);
        printf("vBank: %d\n", sw & 0x1);

        /*
         * Display the actual SERDES reference clocks as configured by the
         * dip switches on the board.  Note that the SWx registers could
         * technically be set to force the reference clocks to match the
         * values that the SERDES expects (or vice versa).  For now, however,
         * we just display both values and hope the user notices when they
         * don't match.
         */
        puts("SERDES Reference Clocks: ");
        sw = in_8(&CPLD_SW(2)) >> 2;
        for (i = 0; i < 2; i++) {
                static const char * const freq[][3] = {{"0", "100", "125"},
                                                {"100", "156.25", "125"}
                };
                unsigned int clock = (sw >> (2 * i)) & 3;

                printf("Bank%u=%sMhz ", i+1, freq[i][clock]);
        }
        puts("\n");

        return 0;
}

int board_early_init_f(void)
{
        ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);

        /* board only uses the DDR_MCK0/1, so disable the DDR_MCK2/3 */
        setbits_be32(&gur->ddrclkdr, 0x000f000f);

        return 0;
}

#define CPLD_LANE_A_SEL 0x1
#define CPLD_LANE_G_SEL 0x2
#define CPLD_LANE_C_SEL 0x4
#define CPLD_LANE_D_SEL 0x8

void board_config_lanes_mux(void)
{
        ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
        int srds_prtcl = (in_be32(&gur->rcwsr[4]) &
                                FSL_CORENET_RCWSR4_SRDS_PRTCL) >> 26;

        u8 mux = 0;
        switch (srds_prtcl) {
        case 0x2:
        case 0x5:
        case 0x9:
        case 0xa:
        case 0xf:
                break;
        case 0x8:
                mux |= CPLD_LANE_C_SEL | CPLD_LANE_D_SEL;
                break;
        case 0x14:
                mux |= CPLD_LANE_A_SEL;
                break;
        case 0x17:
                mux |= CPLD_LANE_G_SEL;
                break;
        case 0x16:
        case 0x19:
        case 0x1a:
                mux |= CPLD_LANE_G_SEL | CPLD_LANE_C_SEL | CPLD_LANE_D_SEL;
                break;
        case 0x1c:
                mux |= CPLD_LANE_G_SEL | CPLD_LANE_A_SEL;
                break;
        default:
                printf("Fman:Unsupported SerDes Protocol 0x%02x\n", srds_prtcl);
                break;
        }
        CPLD_WRITE(serdes_mux, mux);
}

int board_early_init_r(void)
{
        const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
        int flash_esel = find_tlb_idx((void *)flashbase, 1);

        /*
         * Remap Boot flash + PROMJET region to caching-inhibited
         * so that flash can be erased properly.
         */

        /* Flush d-cache and invalidate i-cache of any FLASH data */
        flush_dcache();
        invalidate_icache();

        if (flash_esel == -1) {
                /* very unlikely unless something is messed up */
                puts("Error: Could not find TLB for FLASH BASE\n");
                flash_esel = 2; /* give our best effort to continue */
        } else {
                /* invalidate existing TLB entry for flash + promjet */
                disable_tlb(flash_esel);
        }

        set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
                        MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
                        0, flash_esel, BOOKE_PAGESZ_256M, 1);

        set_liodns();
        setup_portals();
        board_config_lanes_mux();

        return 0;
}

unsigned long get_board_sys_clk(unsigned long dummy)
{
        u8 sysclk_conf = CPLD_READ(sysclk_sw1);

        switch (sysclk_conf & 0x7) {
        case CPLD_SYSCLK_83:
                return 83333333;
        case CPLD_SYSCLK_100:
                return 100000000;
        default:
                return 66666666;
        }
}

#define NUM_SRDS_BANKS  2

int misc_init_r(void)
{
        serdes_corenet_t *regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
        u32 actual[NUM_SRDS_BANKS];
        unsigned int i;
        u8 sw;
        static const int freq[][3] = {
                {0, SRDS_PLLCR0_RFCK_SEL_100, SRDS_PLLCR0_RFCK_SEL_125},
                {SRDS_PLLCR0_RFCK_SEL_100, SRDS_PLLCR0_RFCK_SEL_156_25,
                        SRDS_PLLCR0_RFCK_SEL_125}
        };

        sw = in_8(&CPLD_SW(2)) >> 2;
        for (i = 0; i < NUM_SRDS_BANKS; i++) {
                unsigned int clock = (sw >> (2 * i)) & 3;
                if (clock == 0x3) {
                        printf("Warning: SDREFCLK%u switch setting of '11' is "
                               "unsupported\n", i + 1);
                        break;
                }
                if (i == 0 && clock == 0)
                        puts("Warning: SDREFCLK1 switch setting of"
                                "'00' is unsupported\n");
                else
                        actual[i] = freq[i][clock];

                /*
                 * PC board uses a different CPLD with PB board, this CPLD
                 * has cpld_ver_sub = 1, and pcba_ver = 5. But CPLD on PB
                 * board has cpld_ver_sub = 0, and pcba_ver = 4.
                 */
                if ((i == 1) && (CPLD_READ(cpld_ver_sub) == 1) &&
                    (CPLD_READ(pcba_ver) == 5)) {
                        /* PC board bank2 frequency */
                        actual[i] = freq[i-1][clock];
                }
        }

        for (i = 0; i < NUM_SRDS_BANKS; i++) {
                u32 expected = in_be32(&regs->bank[i].pllcr0);
                expected &= SRDS_PLLCR0_RFCK_SEL_MASK;
                if (expected != actual[i]) {
                        printf("Warning: SERDES bank %u expects reference clock"
                               " %sMHz, but actual is %sMHz\n", i + 1,
                               serdes_clock_to_string(expected),
                               serdes_clock_to_string(actual[i]));
                }
        }

        return 0;
}

int ft_board_setup(void *blob, bd_t *bd)
{
        phys_addr_t base;
        phys_size_t size;

        ft_cpu_setup(blob, bd);

        base = getenv_bootm_low();
        size = getenv_bootm_size();

        fdt_fixup_memory(blob, (u64)base, (u64)size);

#if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
        fdt_fixup_dr_usb(blob, bd);
#endif

#ifdef CONFIG_PCI
        pci_of_setup(blob, bd);
#endif

        fdt_fixup_liodn(blob);
#ifdef CONFIG_SYS_DPAA_FMAN
        fdt_fixup_fman_ethernet(blob);
#endif

        return 0;
}