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/*
* Copyright 2016 NXP Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <config.h>
#include <errno.h>
#include <asm/system.h>
#include <asm/types.h>
#include <asm/arch/soc.h>
#ifdef CONFIG_FSL_LSCH3
#include <asm/arch/immap_lsch3.h>
#elif defined(CONFIG_FSL_LSCH2)
#include <asm/arch/immap_lsch2.h>
#endif
#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
#include <asm/armv8/sec_firmware.h>
#endif
#ifdef CONFIG_CHAIN_OF_TRUST
#include <fsl_validate.h>
#endif
#ifdef CONFIG_SYS_LS_PPA_FW_IN_NAND
#include <nand.h>
#elif defined(CONFIG_SYS_LS_PPA_FW_IN_MMC)
#include <mmc.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
int ppa_init(void)
{
unsigned int el = current_el();
void *ppa_fit_addr;
u32 *boot_loc_ptr_l, *boot_loc_ptr_h;
int ret;
#ifdef CONFIG_CHAIN_OF_TRUST
uintptr_t ppa_esbc_hdr = 0;
uintptr_t ppa_img_addr = 0;
#if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
void *ppa_hdr_ddr;
#endif
#endif
/* Skip if running at lower exception level */
if (el < 3) {
debug("Skipping PPA init, running at EL%d\n", el);
return 0;
}
#ifdef CONFIG_SYS_LS_PPA_FW_IN_XIP
ppa_fit_addr = (void *)CONFIG_SYS_LS_PPA_FW_ADDR;
debug("%s: PPA image load from XIP\n", __func__);
#ifdef CONFIG_CHAIN_OF_TRUST
ppa_esbc_hdr = CONFIG_SYS_LS_PPA_ESBC_ADDR;
#endif
#else /* !CONFIG_SYS_LS_PPA_FW_IN_XIP */
size_t fw_length, fdt_header_len = sizeof(struct fdt_header);
/* Copy PPA image from MMC/SD/NAND to allocated memory */
#ifdef CONFIG_SYS_LS_PPA_FW_IN_MMC
struct mmc *mmc;
int dev = CONFIG_SYS_MMC_ENV_DEV;
struct fdt_header *fitp;
u32 cnt;
u32 blk;
debug("%s: PPA image load from eMMC/SD\n", __func__);
ret = mmc_initialize(gd->bd);
if (ret) {
printf("%s: mmc_initialize() failed\n", __func__);
return ret;
}
mmc = find_mmc_device(dev);
if (!mmc) {
printf("PPA: MMC cannot find device for PPA firmware\n");
return -ENODEV;
}
ret = mmc_init(mmc);
if (ret) {
printf("%s: mmc_init() failed\n", __func__);
return ret;
}
fitp = malloc(roundup(fdt_header_len, 512));
if (!fitp) {
printf("PPA: malloc failed for FIT header(size 0x%zx)\n",
roundup(fdt_header_len, 512));
return -ENOMEM;
}
blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512;
cnt = DIV_ROUND_UP(fdt_header_len, 512);
debug("%s: MMC read PPA FIT header: dev # %u, block # %u, count %u\n",
__func__, dev, blk, cnt);
ret = mmc->block_dev.block_read(&mmc->block_dev, blk, cnt, fitp);
if (ret != cnt) {
free(fitp);
printf("MMC/SD read of PPA FIT header at offset 0x%x failed\n",
CONFIG_SYS_LS_PPA_FW_ADDR);
return -EIO;
}
/* flush cache after read */
flush_cache((ulong)fitp, cnt * 512);
ret = fdt_check_header(fitp);
if (ret) {
free(fitp);
printf("%s: fdt_check_header() failed\n", __func__);
return ret;
}
#ifdef CONFIG_CHAIN_OF_TRUST
ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE);
if (!ppa_hdr_ddr) {
printf("PPA: malloc failed for PPA header\n");
return -ENOMEM;
}
blk = CONFIG_SYS_LS_PPA_ESBC_ADDR >> 9;
cnt = DIV_ROUND_UP(CONFIG_LS_PPA_ESBC_HDR_SIZE, 512);
ret = mmc->block_dev.block_read(&mmc->block_dev, blk, cnt, ppa_hdr_ddr);
if (ret != cnt) {
free(ppa_hdr_ddr);
printf("MMC/SD read of PPA header failed\n");
return -EIO;
}
debug("Read PPA header to 0x%p\n", ppa_hdr_ddr);
/* flush cache after read */
flush_cache((ulong)ppa_hdr_ddr, cnt * 512);
ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr;
#endif
fw_length = fdt_totalsize(fitp);
free(fitp);
fw_length = roundup(fw_length, 512);
ppa_fit_addr = malloc(fw_length);
if (!ppa_fit_addr) {
printf("PPA: malloc failed for PPA image(size 0x%zx)\n",
fw_length);
return -ENOMEM;
}
blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512;
cnt = DIV_ROUND_UP(fw_length, 512);
debug("%s: MMC read PPA FIT image: dev # %u, block # %u, count %u\n",
__func__, dev, blk, cnt);
ret = mmc->block_dev.block_read(&mmc->block_dev,
blk, cnt, ppa_fit_addr);
if (ret != cnt) {
free(ppa_fit_addr);
printf("MMC/SD read of PPA FIT header at offset 0x%x failed\n",
CONFIG_SYS_LS_PPA_FW_ADDR);
return -EIO;
}
/* flush cache after read */
flush_cache((ulong)ppa_fit_addr, cnt * 512);
#elif defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
struct fdt_header fit;
debug("%s: PPA image load from NAND\n", __func__);
nand_init();
ret = nand_read(get_nand_dev_by_index(0),
(loff_t)CONFIG_SYS_LS_PPA_FW_ADDR,
&fdt_header_len, (u_char *)&fit);
if (ret == -EUCLEAN) {
printf("NAND read of PPA FIT header at offset 0x%x failed\n",
CONFIG_SYS_LS_PPA_FW_ADDR);
return -EIO;
}
ret = fdt_check_header(&fit);
if (ret) {
printf("%s: fdt_check_header() failed\n", __func__);
return ret;
}
#ifdef CONFIG_CHAIN_OF_TRUST
ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE);
if (!ppa_hdr_ddr) {
printf("PPA: malloc failed for PPA header\n");
return -ENOMEM;
}
fw_length = CONFIG_LS_PPA_ESBC_HDR_SIZE;
ret = nand_read(get_nand_dev_by_index(0),
(loff_t)CONFIG_SYS_LS_PPA_ESBC_ADDR,
&fw_length, (u_char *)ppa_hdr_ddr);
if (ret == -EUCLEAN) {
free(ppa_hdr_ddr);
printf("NAND read of PPA firmware at offset 0x%x failed\n",
CONFIG_SYS_LS_PPA_FW_ADDR);
return -EIO;
}
debug("Read PPA header to 0x%p\n", ppa_hdr_ddr);
/* flush cache after read */
flush_cache((ulong)ppa_hdr_ddr, fw_length);
ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr;
#endif
fw_length = fdt_totalsize(&fit);
ppa_fit_addr = malloc(fw_length);
if (!ppa_fit_addr) {
printf("PPA: malloc failed for PPA image(size 0x%zx)\n",
fw_length);
return -ENOMEM;
}
ret = nand_read(get_nand_dev_by_index(0),
(loff_t)CONFIG_SYS_LS_PPA_FW_ADDR,
&fw_length, (u_char *)ppa_fit_addr);
if (ret == -EUCLEAN) {
free(ppa_fit_addr);
printf("NAND read of PPA firmware at offset 0x%x failed\n",
CONFIG_SYS_LS_PPA_FW_ADDR);
return -EIO;
}
/* flush cache after read */
flush_cache((ulong)ppa_fit_addr, fw_length);
#else
#error "No CONFIG_SYS_LS_PPA_FW_IN_xxx defined"
#endif
#endif
#ifdef CONFIG_CHAIN_OF_TRUST
ppa_img_addr = (uintptr_t)ppa_fit_addr;
if (fsl_check_boot_mode_secure() != 0) {
/*
* In case of failure in validation, fsl_secboot_validate
* would not return back in case of Production environment
* with ITS=1. In Development environment (ITS=0 and
* SB_EN=1), the function may return back in case of
* non-fatal failures.
*/
ret = fsl_secboot_validate(ppa_esbc_hdr,
PPA_KEY_HASH,
&ppa_img_addr);
if (ret != 0)
printf("PPA validation failed\n");
else
printf("PPA validation Successful\n");
}
#if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
free(ppa_hdr_ddr);
#endif
#endif
#ifdef CONFIG_FSL_LSCH3
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
boot_loc_ptr_l = &gur->bootlocptrl;
boot_loc_ptr_h = &gur->bootlocptrh;
#elif defined(CONFIG_FSL_LSCH2)
struct ccsr_scfg __iomem *scfg = (void *)(CONFIG_SYS_FSL_SCFG_ADDR);
boot_loc_ptr_l = &scfg->scratchrw[1];
boot_loc_ptr_h = &scfg->scratchrw[0];
#endif
debug("fsl-ppa: boot_loc_ptr_l = 0x%p, boot_loc_ptr_h =0x%p\n",
boot_loc_ptr_l, boot_loc_ptr_h);
ret = sec_firmware_init(ppa_fit_addr, boot_loc_ptr_l, boot_loc_ptr_h);
#if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
free(ppa_fit_addr);
#endif
return ret;
}
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