mtk-lk/app/mt_boot/sec_hrid.c

/* Copyright Statement:
*
* This software/firmware and related documentation ("MediaTek Software") are
* protected under relevant copyright laws. The information contained herein
* is confidential and proprietary to MediaTek Inc. and/or its licensors.
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*/
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*
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* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
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*/

#include <platform/mt_typedefs.h>
#include "sec_hrid.h"
#include "sec_devinfo.h"

u32 get_hrid_size(void)
{
    return HRID_SIZE;
}

u32 get_hrid(unsigned char *rid, unsigned char *rid_sz)
{
    u32 ret = E_SUCCESS;
    u32 i, j;

    if (rid_sz == NULL) {
        return E_BUF_SIZE_ZERO_OR_NULL;
    }

    if (rid == NULL) {
        return E_BUF_ZERO_OR_NULL;
    }

    if (*rid_sz < (HRID_SIZE * 4)) {
        return E_BUF_NOT_ENOUGH;
    }

    for (i = 0; i < HRID_SIZE; i++) {
        u32 reg_val = 0;
        reg_val = get_devinfo_with_index(12 + i);
        for (j = 0; j < 4; j++) {
            *(rid + i * 4 + j) = (reg_val & (0xff << (8 * j))) >> (8 * j);
        }
    }

    *rid_sz = HRID_SIZE * 4;

    return ret;
}