// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2014 Freescale Semiconductor, Inc.
 */

#include <common.h>
#include <linux/libfdt.h>
#include <fdt_support.h>
#if CONFIG_SYS_FSL_SEC_COMPAT == 2 || CONFIG_SYS_FSL_SEC_COMPAT >= 4
#include <fsl_sec.h>
#endif

/*
 * update crypto node properties to a specified revision of the SEC
 * called with sec_rev == 0 if not on an E processor
 */
#if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
void fdt_fixup_crypto_node(void *blob, int sec_rev)
{
        static const struct sec_rev_prop {
                u32 sec_rev;
                u32 num_channels;
                u32 channel_fifo_len;
                u32 exec_units_mask;
                u32 descriptor_types_mask;
        } sec_rev_prop_list[] = {
                { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
                { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
                { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
                { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
                { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
                { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
                { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
        };
        static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
                                   sizeof("fsl,secX.Y")];
        int crypto_node, sec_idx, err;
        char *p;
        u32 val;

        /* locate crypto node based on lowest common compatible */
        crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
        if (crypto_node == -FDT_ERR_NOTFOUND)
                return;

        /* delete it if not on an E-processor */
        if (crypto_node > 0 && !sec_rev) {
                fdt_del_node(blob, crypto_node);
                return;
        }

        /* else we got called for possible uprev */
        for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
                if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
                        break;

        if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
                puts("warning: unknown SEC revision number\n");
                return;
        }

        err = fdt_setprop_u32(blob, crypto_node, "fsl,num-channels",
                              sec_rev_prop_list[sec_idx].num_channels);
        if (err < 0)
                printf("WARNING: could not set crypto property: %s\n",
                       fdt_strerror(err));

        err = fdt_setprop_u32(blob, crypto_node, "fsl,descriptor-types-mask",
                              sec_rev_prop_list[sec_idx].descriptor_types_mask);
        if (err < 0)
                printf("WARNING: could not set crypto property: %s\n",
                       fdt_strerror(err));

        err = fdt_setprop_u32(blob, crypto_node, "fsl,exec-units-mask",
                              sec_rev_prop_list[sec_idx].exec_units_mask);
        if (err < 0)
                printf("WARNING: could not set crypto property: %s\n",
                       fdt_strerror(err));

        err = fdt_setprop_u32(blob, crypto_node, "fsl,channel-fifo-len",
                              sec_rev_prop_list[sec_idx].channel_fifo_len);
        if (err < 0)
                printf("WARNING: could not set crypto property: %s\n",
                       fdt_strerror(err));

        val = 0;
        while (sec_idx >= 0) {
                p = compat_strlist + val;
                val += sprintf(p, "fsl,sec%d.%d",
                        (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
                        sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
                sec_idx--;
        }
        err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist,
                          val);
        if (err < 0)
                printf("WARNING: could not set crypto property: %s\n",
                       fdt_strerror(err));
}
#elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
/**
 * caam_get_era() - fetch the CAAM's era
 *
 * The SEC module povides an "Era" which can be used to differentiate
 * between different revisions.
 *
 * Return: era of the SEC.
 */
u8 caam_get_era(void)
{
        static const struct {
                u16 ip_id;
                u8 maj_rev;
                u8 era;
        } caam_eras[] = {
                {0x0A10, 1, 1},
                {0x0A10, 2, 2},
                {0x0A12, 1, 3},
                {0x0A14, 1, 3},
                {0x0A14, 2, 4},
                {0x0A16, 1, 4},
                {0x0A10, 3, 4},
                {0x0A11, 1, 4},
                {0x0A18, 1, 4},
                {0x0A11, 2, 5},
                {0x0A12, 2, 5},
                {0x0A13, 1, 5},
                {0x0A1C, 1, 5}
        };

        ccsr_sec_t __iomem *sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR;
        u32 secvid_ms = sec_in32(&sec->secvid_ms);
        u32 ccbvid = sec_in32(&sec->ccbvid);
        u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >>
                                SEC_SECVID_MS_IPID_SHIFT;
        u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >>
                                SEC_SECVID_MS_MAJ_REV_SHIFT;
        u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT;

        int i;

        if (era)        /* This is '0' prior to CAAM ERA-6 */
                return era;

        for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
                if (caam_eras[i].ip_id == ip_id &&
                    caam_eras[i].maj_rev == maj_rev)
                        return caam_eras[i].era;

        return 0;
}

static void fdt_fixup_crypto_era(void *blob, u32 era)
{
        int err;
        int crypto_node;

        crypto_node = fdt_path_offset(blob, "crypto");
        if (crypto_node < 0) {
                printf("WARNING: Missing crypto node\n");
                return;
        }

        err = fdt_setprop_u32(blob, crypto_node, "fsl,sec-era", era);
        if (err < 0) {
                printf("ERROR: could not set fsl,sec-era property: %s\n",
                       fdt_strerror(err));
        }
}

void fdt_fixup_crypto_node(void *blob, int sec_rev)
{
        u8 era;

        if (!sec_rev) {
                fdt_del_node_and_alias(blob, "crypto");
                return;
        }

        /* Add SEC ERA information in compatible */
        era = caam_get_era();
        if (era) {
                fdt_fixup_crypto_era(blob, era);
        } else {
                printf("WARNING: Unable to get ERA for CAAM rev: %d\n",
                       sec_rev);
        }
}
#endif