SPM: Load image and RD from SP package
Load SP and RD from package instead of relying on RD being already loaded in memory and the SP being loaded as a BL32 image. Change-Id: I18d4fbf4597656c6a7e878e1d7c01a8a324f3f8a Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
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@ -10,6 +10,31 @@
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#include <utils_def.h>
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#include <xlat_tables_defs.h>
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/*
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* Reserve 4 MiB for binaries of Secure Partitions and Resource Description
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* blobs.
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*/
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#define PLAT_SP_PACKAGE_BASE BL32_BASE
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#define PLAT_SP_PACKAGE_SIZE ULL(0x400000)
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#define PLAT_MAP_SP_PACKAGE_MEM_RO MAP_REGION_FLAT( \
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PLAT_SP_PACKAGE_BASE, \
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PLAT_SP_PACKAGE_SIZE, \
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MT_MEMORY | MT_RO | MT_SECURE)
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#define PLAT_MAP_SP_PACKAGE_MEM_RW MAP_REGION_FLAT( \
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PLAT_SP_PACKAGE_BASE, \
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PLAT_SP_PACKAGE_SIZE, \
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MT_MEMORY | MT_RW | MT_SECURE)
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/*
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* The rest of the memory reserved for BL32 is free for SPM to use it as memory
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* pool to allocate memory regions requested in the resource description.
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*/
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#define PLAT_SPM_HEAP_BASE (PLAT_SP_PACKAGE_BASE + PLAT_SP_PACKAGE_SIZE)
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#define PLAT_SPM_HEAP_SIZE (BL32_LIMIT - BL32_BASE - PLAT_SP_PACKAGE_SIZE)
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#if SPM_DEPRECATED
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/*
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* If BL31 is placed in DRAM, place the Secure Partition in DRAM right after the
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* region used by BL31. If BL31 it is placed in SRAM, put the Secure Partition
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@ -28,8 +53,6 @@
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MT_MEMORY | MT_RW | MT_SECURE)
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#endif
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#if SPM_DEPRECATED
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#ifdef IMAGE_BL31
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/* SPM Payload memory. Mapped as code in S-EL1 */
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#define ARM_SP_IMAGE_MMAP MAP_REGION2( \
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@ -268,6 +268,8 @@ const struct mmap_region *plat_get_secure_partition_mmap(void *cookie);
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const struct secure_partition_boot_info *plat_get_secure_partition_boot_info(
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void *cookie);
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int plat_spm_sp_rd_load(struct sp_res_desc *rd, const void *ptr, size_t size);
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int plat_spm_sp_get_next_address(void **sp_base, size_t *sp_size,
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void **rd_base, size_t *rd_size);
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/*******************************************************************************
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* Mandatory BL image load functions(may be overridden).
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@ -96,9 +96,12 @@ const mmap_region_t plat_arm_mmap[] = {
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ARM_MAP_BL1_RW,
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#endif
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#endif /* TRUSTED_BOARD_BOOT */
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#if ENABLE_SPM
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#if ENABLE_SPM && SPM_DEPRECATED
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ARM_SP_IMAGE_MMAP,
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#endif
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#if ENABLE_SPM && !SPM_DEPRECATED
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PLAT_MAP_SP_PACKAGE_MEM_RW,
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#endif
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#if ARM_BL31_IN_DRAM
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ARM_MAP_BL31_SEC_DRAM,
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#endif
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@ -126,6 +129,9 @@ const mmap_region_t plat_arm_mmap[] = {
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ARM_V2M_MAP_MEM_PROTECT,
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#if ENABLE_SPM && SPM_DEPRECATED
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ARM_SPM_BUF_EL3_MMAP,
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#endif
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#if ENABLE_SPM && !SPM_DEPRECATED
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PLAT_MAP_SP_PACKAGE_MEM_RO,
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#endif
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{0}
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};
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@ -72,8 +72,8 @@
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#if defined(IMAGE_BL31)
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# if ENABLE_SPM
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# define PLAT_ARM_MMAP_ENTRIES 9
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# define MAX_XLAT_TABLES 7
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# define PLAT_SP_IMAGE_MMAP_REGIONS 7
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# define MAX_XLAT_TABLES 9
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# define PLAT_SP_IMAGE_MMAP_REGIONS 30
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# define PLAT_SP_IMAGE_MAX_XLAT_TABLES 10
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# else
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# define PLAT_ARM_MMAP_ENTRIES 8
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@ -249,6 +249,7 @@ ifeq (${SPM_DEPRECATED},0)
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ifeq (${ENABLE_SPM},1)
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BL31_SOURCES += common/fdt_wrappers.c \
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plat/common/plat_spm_rd.c \
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plat/common/plat_spm_sp.c \
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${LIBFDT_SRCS}
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endif
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endif
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@ -0,0 +1,90 @@
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/*
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* Copyright (c) 2018, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <debug.h>
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#include <platform_def.h>
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#include <sptool.h>
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static unsigned int sp_next;
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/*******************************************************************************
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* Platform handler get the address of a Secure Partition and its resource
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* description blob. It iterates through all SPs detected by the platform. If
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* there is information for another SP, it returns 0. If there are no more SPs,
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* it returns -1.
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******************************************************************************/
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int plat_spm_sp_get_next_address(void **sp_base, size_t *sp_size,
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void **rd_base, size_t *rd_size)
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{
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assert((sp_base != NULL) && (sp_size != NULL));
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assert((rd_base != NULL) && (rd_base != NULL));
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const uint64_t *pkg_base = (uint64_t *)PLAT_SP_PACKAGE_BASE;
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struct sp_pkg_header *pkg_header = (struct sp_pkg_header *)pkg_base;
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if (sp_next == 0) {
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if (pkg_header->version != 0x1) {
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ERROR("SP package has an unsupported version 0x%llx\n",
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pkg_header->version);
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panic();
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}
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}
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if (sp_next >= pkg_header->number_of_sp) {
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/* No more partitions in the package */
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return -1;
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}
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const struct sp_pkg_entry *entry_list =
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(const struct sp_pkg_entry *)((uintptr_t)pkg_base
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+ sizeof(struct sp_pkg_header));
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const struct sp_pkg_entry *entry = &(entry_list[sp_next]);
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uint64_t sp_offset = entry->sp_offset;
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uint64_t rd_offset = entry->rd_offset;
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uintptr_t pkg_sp_base = ((uintptr_t)PLAT_SP_PACKAGE_BASE + sp_offset);
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uintptr_t pkg_rd_base = ((uintptr_t)PLAT_SP_PACKAGE_BASE + rd_offset);
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uint64_t pkg_sp_size = entry->sp_size;
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uint64_t pkg_rd_size = entry->rd_size;
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uintptr_t pkg_end = (uintptr_t)PLAT_SP_PACKAGE_BASE
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+ (uintptr_t)PLAT_SP_PACKAGE_SIZE - 1U;
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/*
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* Check for overflows. The package header isn't trusted, so assert()
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* can't be used here.
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*/
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uintptr_t pkg_sp_end = pkg_sp_base + pkg_sp_size - 1U;
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uintptr_t pkg_rd_end = pkg_rd_base + pkg_rd_size - 1U;
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if ((pkg_sp_end > pkg_end) || (pkg_sp_end < pkg_sp_base)) {
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ERROR("Invalid Secure Partition size (0x%llx)\n", pkg_sp_size);
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panic();
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}
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if ((pkg_rd_end > pkg_end) || (pkg_rd_end < pkg_rd_base)) {
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ERROR("Invalid Resource Description blob size (0x%llx)\n",
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pkg_rd_size);
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panic();
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}
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/* Return location of the binaries. */
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*sp_base = (void *)pkg_sp_base;
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*sp_size = pkg_sp_size;
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*rd_base = (void *)pkg_rd_base;
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*rd_size = pkg_rd_size;
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sp_next++;
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return 0;
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}
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@ -157,7 +157,10 @@ static int32_t spm_init(void)
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******************************************************************************/
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int32_t spm_setup(void)
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{
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int rc;
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sp_context_t *ctx;
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void *sp_base, *rd_base;
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size_t sp_size, rd_size;
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/* Disable MMU at EL1 (initialized by BL2) */
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disable_mmu_icache_el1();
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@ -167,9 +170,26 @@ int32_t spm_setup(void)
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ctx = &sp_ctx;
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rc = plat_spm_sp_get_next_address(&sp_base, &sp_size,
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&rd_base, &rd_size);
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if (rc != 0) {
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ERROR("No Secure Partition found.\n");
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panic();
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}
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/* Assign translation tables context. */
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ctx->xlat_ctx_handle = spm_get_sp_xlat_context();
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/* Save location of the image in physical memory */
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ctx->image_base = (uintptr_t)sp_base;
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ctx->image_size = sp_size;
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rc = plat_spm_sp_rd_load(&ctx->rd, rd_base, rd_size);
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if (rc < 0) {
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ERROR("Error while loading RD blob.\n");
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panic();
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}
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spm_sp_setup(ctx);
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/* Register init function for deferred init. */
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@ -32,6 +32,7 @@
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#ifndef __ASSEMBLY__
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#include <spinlock.h>
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#include <sp_res_desc.h>
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#include <stdint.h>
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#include <xlat_tables_v2.h>
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@ -42,9 +43,14 @@ typedef enum sp_state {
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} sp_state_t;
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typedef struct sp_context {
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/* Location of the image in physical memory */
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unsigned long long image_base;
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size_t image_size;
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uint64_t c_rt_ctx;
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cpu_context_t cpu_ctx;
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xlat_ctx_t *xlat_ctx_handle;
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struct sp_res_desc rd;
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sp_state_t state;
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spinlock_t state_lock;
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