+// SPDX-License-Identifier: BSD-3-Clause
/*
* Reference to the ARM TF Project,
* plat/arm/common/arm_bl2_setup.c
* reserved.
* Copyright (C) 2016 Rockchip Electronic Co.,Ltd
* Written by Kever Yang <kever.yang@rock-chips.com>
- *
- * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C) 2017 Theobroma Systems Design und Consulting GmbH
*/
#include <common.h>
#include <atf_common.h>
+#include <cpu_func.h>
#include <errno.h>
+#include <image.h>
+#include <log.h>
#include <spl.h>
+#include <asm/cache.h>
static struct bl2_to_bl31_params_mem bl31_params_mem;
static struct bl31_params *bl2_to_bl31_params;
-/**
- * bl2_plat_get_bl31_params() - prepare params for bl31.
- *
- * This function assigns a pointer to the memory that the platform has kept
- * aside to pass platform specific and trusted firmware related information
- * to BL31. This memory is allocated by allocating memory to
- * bl2_to_bl31_params_mem structure which is a superset of all the
- * structure whose information is passed to BL31
- * NOTE: This function should be called only once and should be done
- * before generating params to BL31
- *
- * @return bl31 params structure pointer
- */
-struct bl31_params *bl2_plat_get_bl31_params(void)
+__weak struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
+ uintptr_t bl33_entry,
+ uintptr_t fdt_addr)
{
+ struct entry_point_info *bl32_ep_info;
struct entry_point_info *bl33_ep_info;
/*
SET_PARAM_HEAD(bl2_to_bl31_params, ATF_PARAM_BL31, ATF_VERSION_1, 0);
/* Fill BL31 related information */
+ bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info;
SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info,
ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
- /* Fill BL32 related information if it exists */
-#ifdef BL32_BASE
+ /* Fill BL32 related information */
bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
- SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, ATF_PARAM_EP,
- ATF_VERSION_1, 0);
+ bl32_ep_info = &bl31_params_mem.bl32_ep_info;
+ SET_PARAM_HEAD(bl32_ep_info, ATF_PARAM_EP, ATF_VERSION_1,
+ ATF_EP_SECURE);
+
+ /* secure payload is optional, so set pc to 0 if absent */
+ bl32_ep_info->args.arg3 = fdt_addr;
+ bl32_ep_info->pc = bl32_entry ? bl32_entry : 0;
+ bl32_ep_info->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
+ DISABLE_ALL_EXECPTIONS);
+
bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info,
ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
-#endif /* BL32_BASE */
/* Fill BL33 related information */
bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
/* BL33 expects to receive the primary CPU MPID (through x0) */
bl33_ep_info->args.arg0 = 0xffff & read_mpidr();
- bl33_ep_info->pc = CONFIG_SYS_TEXT_BASE;
+ bl33_ep_info->pc = bl33_entry;
bl33_ep_info->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX,
DISABLE_ALL_EXECPTIONS);
return bl2_to_bl31_params;
}
-void raw_write_daif(unsigned int daif)
+static inline void raw_write_daif(unsigned int daif)
{
__asm__ __volatile__("msr DAIF, %0\n\t" : : "r" (daif) : "memory");
}
-void bl31_entry(void)
+typedef void (*atf_entry_t)(struct bl31_params *params, void *plat_params);
+
+static void bl31_entry(uintptr_t bl31_entry, uintptr_t bl32_entry,
+ uintptr_t bl33_entry, uintptr_t fdt_addr)
{
struct bl31_params *bl31_params;
- void (*entry)(struct bl31_params *params, void *plat_params) = NULL;
+ atf_entry_t atf_entry = (atf_entry_t)bl31_entry;
- bl31_params = bl2_plat_get_bl31_params();
- entry = (void *)CONFIG_SPL_ATF_TEXT_BASE;
+ bl31_params = bl2_plat_get_bl31_params(bl32_entry, bl33_entry,
+ fdt_addr);
raw_write_daif(SPSR_EXCEPTION_MASK);
dcache_disable();
- entry(bl31_params, NULL);
+ atf_entry((void *)bl31_params, (void *)fdt_addr);
+}
+
+static int spl_fit_images_find(void *blob, int os)
+{
+ int parent, node, ndepth = 0;
+ const void *data;
+
+ if (!blob)
+ return -FDT_ERR_BADMAGIC;
+
+ parent = fdt_path_offset(blob, "/fit-images");
+ if (parent < 0)
+ return -FDT_ERR_NOTFOUND;
+
+ for (node = fdt_next_node(blob, parent, &ndepth);
+ (node >= 0) && (ndepth > 0);
+ node = fdt_next_node(blob, node, &ndepth)) {
+ if (ndepth != 1)
+ continue;
+
+ data = fdt_getprop(blob, node, FIT_OS_PROP, NULL);
+ if (!data)
+ continue;
+
+ if (genimg_get_os_id(data) == os)
+ return node;
+ };
+
+ return -FDT_ERR_NOTFOUND;
+}
+
+uintptr_t spl_fit_images_get_entry(void *blob, int node)
+{
+ ulong val;
+ int ret;
+
+ ret = fit_image_get_entry(blob, node, &val);
+ if (ret)
+ ret = fit_image_get_load(blob, node, &val);
+
+ debug("%s: entry point 0x%lx\n", __func__, val);
+ return val;
+}
+
+void spl_invoke_atf(struct spl_image_info *spl_image)
+{
+ uintptr_t bl32_entry = 0;
+ uintptr_t bl33_entry = CONFIG_SYS_TEXT_BASE;
+ void *blob = spl_image->fdt_addr;
+ uintptr_t platform_param = (uintptr_t)blob;
+ int node;
+
+ /*
+ * Find the OP-TEE binary (in /fit-images) load address or
+ * entry point (if different) and pass it as the BL3-2 entry
+ * point, this is optional.
+ */
+ node = spl_fit_images_find(blob, IH_OS_TEE);
+ if (node >= 0)
+ bl32_entry = spl_fit_images_get_entry(blob, node);
+
+ /*
+ * Find the U-Boot binary (in /fit-images) load addreess or
+ * entry point (if different) and pass it as the BL3-3 entry
+ * point.
+ * This will need to be extended to support Falcon mode.
+ */
+
+ node = spl_fit_images_find(blob, IH_OS_U_BOOT);
+ if (node >= 0)
+ bl33_entry = spl_fit_images_get_entry(blob, node);
+
+ /*
+ * If ATF_NO_PLATFORM_PARAM is set, we override the platform
+ * parameter and always pass 0. This is a workaround for
+ * older ATF versions that have insufficiently robust (or
+ * overzealous) argument validation.
+ */
+ if (CONFIG_IS_ENABLED(ATF_NO_PLATFORM_PARAM))
+ platform_param = 0;
+
+ /*
+ * We don't provide a BL3-2 entry yet, but this will be possible
+ * using similar logic.
+ */
+ bl31_entry(spl_image->entry_point, bl32_entry,
+ bl33_entry, platform_param);
}
git.openpandora.org / pandora-u-boot.git / blobdiff