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/*
* Copyright 2014-2016 Freescale Semiconductor, Inc.
* Copyright 2017 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*
*/
#include <common.h>
#include <errno.h>
#include <fsl_sec.h>
#include <memalign.h>
#include "desc.h"
#include "desc_constr.h"
#include "jobdesc.h"
#include "jr.h"
/* Size of MFG descriptor */
#define MFG_PUBK_DSC_WORDS 4
#define MFG_SIGN_DSC_WORDS 8
static void mfg_build_sign_dsc(u32 *dsc_ptr, const u8 *m, int size,
u8 *dgst, u8 *c, u8 *d)
{
u32 *dsc = dsc_ptr;
struct pdb_mp_sign *pdb;
init_job_desc_pdb(dsc, 0, sizeof(struct pdb_mp_sign));
pdb = (struct pdb_mp_sign *)desc_pdb(dsc);
/* Curve */
pdb->pdb_hdr = (PDB_MP_CSEL_P256);
/* Message Pointer */
pdb_add_ptr(&pdb->dma_addr_msg, virt_to_phys((void *)m));
/* mes-resp Pointer */
pdb_add_ptr(&pdb->dma_addr_hash, virt_to_phys((void *)dgst));
/* C Pointer */
pdb_add_ptr(&pdb->dma_addr_c_sig, virt_to_phys((void *)c));
/* d Pointer */
pdb_add_ptr(&pdb->dma_addr_d_sig, virt_to_phys((void *)d));
/* Message Size */
pdb->img_size = size;
/* MP PubK generate key command */
append_cmd(dsc, (CMD_OPERATION | OP_TYPE_DECAP_PROTOCOL |
OP_PCLID_MP_SIGN));
}
static void mfg_build_pubk_dsc(u32 *dsc_ptr, u8 *dst)
{
u32 *dsc = dsc_ptr;
struct pdb_mp_pub_k *pdb;
init_job_desc_pdb(dsc, 0, sizeof(struct pdb_mp_pub_k));
pdb = (struct pdb_mp_pub_k *)desc_pdb(dsc);
/* Curve */
pdb->pdb_hdr = (PDB_MP_CSEL_P256);
/* Message Pointer */
pdb_add_ptr(&pdb->dma_pkey, virt_to_phys((void *)dst));
/* MP Sign key command */
append_cmd(dsc, (CMD_OPERATION | OP_TYPE_DECAP_PROTOCOL |
OP_PCLID_MP_PUB_KEY));
}
int gen_mppubk(u8 *dst)
{
int size, ret;
u32 *dsc;
/* Job Descriptor initialization */
dsc = memalign(ARCH_DMA_MINALIGN,
sizeof(uint32_t) * MFG_PUBK_DSC_WORDS);
if (!dsc) {
debug("Not enough memory for descriptor allocation\n");
return -ENOMEM;
}
mfg_build_pubk_dsc(dsc, dst);
size = roundup(sizeof(uint32_t) * MFG_PUBK_DSC_WORDS,
ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)dsc, (unsigned long)dsc + size);
size = roundup(FSL_CAAM_MP_PUBK_BYTES, ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)dst, (unsigned long)dst + size);
/* Execute Job Descriptor */
puts("\nGenerating Manufacturing Protection Public Key\n");
ret = run_descriptor_jr(dsc);
if (ret) {
debug("Error in public key generation %d\n", ret);
goto err;
}
size = roundup(FSL_CAAM_MP_PUBK_BYTES, ARCH_DMA_MINALIGN);
invalidate_dcache_range((unsigned long)dst, (unsigned long)dst + size);
err:
free(dsc);
return ret;
}
int sign_mppubk(const u8 *m, int data_size, u8 *dgst, u8 *c, u8 *d)
{
int size, ret;
u32 *dsc;
/* Job Descriptor initialization */
dsc = memalign(ARCH_DMA_MINALIGN,
sizeof(uint32_t) * MFG_SIGN_DSC_WORDS);
if (!dsc) {
debug("Not enough memory for descriptor allocation\n");
return -ENOMEM;
}
mfg_build_sign_dsc(dsc, m, data_size, dgst, c, d);
size = roundup(sizeof(uint32_t) * MFG_SIGN_DSC_WORDS,
ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)dsc, (unsigned long)dsc + size);
size = roundup(data_size, ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)m, (unsigned long)m + size);
size = roundup(FSL_CAAM_MP_MES_DGST_BYTES, ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)dgst, (unsigned long)dgst + size);
size = roundup(FSL_CAAM_MP_PRVK_BYTES, ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)c, (unsigned long)c + size);
flush_dcache_range((unsigned long)d, (unsigned long)d + size);
/* Execute Job Descriptor */
puts("\nSigning message with Manufacturing Protection Public Key\n");
ret = run_descriptor_jr(dsc);
if (ret) {
debug("Error in public key generation %d\n", ret);
goto err;
}
size = roundup(FSL_CAAM_MP_MES_DGST_BYTES, ARCH_DMA_MINALIGN);
invalidate_dcache_range((unsigned long)dgst,
(unsigned long)dgst + size);
size = roundup(FSL_CAAM_MP_PRVK_BYTES, ARCH_DMA_MINALIGN);
invalidate_dcache_range((unsigned long)c, (unsigned long)c + size);
invalidate_dcache_range((unsigned long)d, (unsigned long)d + size);
err:
free(dsc);
return ret;
}
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