git.sur5r.net Git - u-boot/blob - arch/arm/cpu/armv8/fsl-layerscape/ppa.c

   1 /*
   2  * Copyright 2016 NXP Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7 #include <config.h>
   8 #include <errno.h>
   9 #include <asm/system.h>
  10 #include <asm/types.h>
  11 #include <asm/arch/soc.h>
  12 #ifdef CONFIG_FSL_LSCH3
  13 #include <asm/arch/immap_lsch3.h>
  14 #elif defined(CONFIG_FSL_LSCH2)
  15 #include <asm/arch/immap_lsch2.h>
  16 #endif
  17 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
  18 #include <asm/armv8/sec_firmware.h>
  19 #endif
  20 #ifdef CONFIG_CHAIN_OF_TRUST
  21 #include <fsl_validate.h>
  22 #endif
  23
  24 int ppa_init(void)
  25 {
  26         const void *ppa_fit_addr;
  27         u32 *boot_loc_ptr_l, *boot_loc_ptr_h;
  28         int ret;
  29
  30 #ifdef CONFIG_CHAIN_OF_TRUST
  31         uintptr_t ppa_esbc_hdr = CONFIG_SYS_LS_PPA_ESBC_ADDR;
  32         uintptr_t ppa_img_addr = 0;
  33 #endif
  34
  35 #ifdef CONFIG_SYS_LS_PPA_FW_IN_XIP
  36         ppa_fit_addr = (void *)CONFIG_SYS_LS_PPA_FW_ADDR;
  37 #else
  38 #error "No CONFIG_SYS_LS_PPA_FW_IN_xxx defined"
  39 #endif
  40
  41 #ifdef CONFIG_CHAIN_OF_TRUST
  42         ppa_img_addr = (uintptr_t)ppa_fit_addr;
  43         if (fsl_check_boot_mode_secure() != 0) {
  44                 ret = fsl_secboot_validate(ppa_esbc_hdr,
  45                                            CONFIG_PPA_KEY_HASH,
  46                                            &ppa_img_addr);
  47                 if (ret != 0)
  48                         printf("PPA validation failed\n");
  49                 else
  50                         printf("PPA validation Successful\n");
  51         }
  52 #endif
  53
  54 #ifdef CONFIG_FSL_LSCH3
  55         struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
  56         boot_loc_ptr_l = &gur->bootlocptrl;
  57         boot_loc_ptr_h = &gur->bootlocptrh;
  58 #elif defined(CONFIG_FSL_LSCH2)
  59         struct ccsr_scfg __iomem *scfg = (void *)(CONFIG_SYS_FSL_SCFG_ADDR);
  60         boot_loc_ptr_l = &scfg->scratchrw[1];
  61         boot_loc_ptr_h = &scfg->scratchrw[0];
  62 #endif
  63
  64         debug("fsl-ppa: boot_loc_ptr_l = 0x%p, boot_loc_ptr_h =0x%p\n",
  65               boot_loc_ptr_l, boot_loc_ptr_h);
  66         ret = sec_firmware_init(ppa_fit_addr, boot_loc_ptr_l, boot_loc_ptr_h);
  67
  68         return ret;
  69 }