The U-Boot SPL loads the next stage FIT image into internal SRAM. The binaries are 'external' in this FIT image. The SPL has to load the DDR init binary, i.e. qclib and the DDR parameters i.e. qcconfig used by qclib and invoke the qclib. SPL and qclib exchange information using the interface table described in doc/board/qualcomm/interface-table.rst.
Reviewed-by: Balaji Selvanathan <[email protected]> Reviewed-by: Simon Glass <[email protected]> Signed-off-by: Varadarajan Narayanan <[email protected]> --- arch/arm/mach-snapdragon/Makefile | 1 + arch/arm/mach-snapdragon/fit-handler.c | 131 +++++++++++++++++++++++++++++++++ 2 files changed, 132 insertions(+) diff --git a/arch/arm/mach-snapdragon/Makefile b/arch/arm/mach-snapdragon/Makefile index 4f2f35cb9de..2701f7c6fb1 100644 --- a/arch/arm/mach-snapdragon/Makefile +++ b/arch/arm/mach-snapdragon/Makefile @@ -7,6 +7,7 @@ obj-y += mem_map.o ifeq ($(CONFIG_SPL_BUILD),y) obj-y += board_spl.o +obj-y += fit-handler.o obj-y += pbl-shared-data.o else obj-y += board.o diff --git a/arch/arm/mach-snapdragon/fit-handler.c b/arch/arm/mach-snapdragon/fit-handler.c new file mode 100644 index 00000000000..fc419bd3f00 --- /dev/null +++ b/arch/arm/mach-snapdragon/fit-handler.c @@ -0,0 +1,131 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ +#include <atf_common.h> +#include <image.h> +#include <log.h> +#include <spl.h> +#include <linux/err.h> +#include <mach/qclib.h> +#include <mach/spl.h> + +/** + * qcom_spl_get_fit_img_entry_point() - Get entry point from FIT image node. + * @fit: Pointer to the FIT image blob. + * @node: Node ID within the FIT image. + * @entry_point: Pointer to store the retrieved entry point. + * + * Return: 0 on success, or a negative error code on failure. + */ +int qcom_spl_get_fit_img_entry_point(void *fit, int node, + u64 *entry_point) +{ + int ret; + + if (!fit) { + pr_err("FIT image blob is NULL\n"); + return -EINVAL; + } + if (node <= 0) { + pr_err("Invalid FIT node ID %d\n", node); + return -EINVAL; + } + if (!entry_point) { + pr_err("Entry point pointer is NULL\n"); + return -EINVAL; + } + + ret = fit_image_get_entry(fit, node, (ulong *)entry_point); + if (ret) { + pr_debug("No entry point for node %d, trying load address\n", + node); + ret = fit_image_get_load(fit, node, (ulong *)entry_point); + if (ret) + pr_err("No load address for node %d (%d)\n", node, ret); + } + + return ret; +} + +/** + * qcom_spl_get_iftbl_entry_by_name() - Get an interface table entry by name. + * @if_tbl: Pointer to the QCLIB interface table. + * @name: Name of the entry to find. + * @entry: Pointer to a buffer where the found entry will be copied. + * + * Return: 0 on success, or a negative error code on failure. + */ +int qcom_spl_get_iftbl_entry_by_name(struct interface_table *if_tbl, + char *name, + struct interface_table_entry *entry) +{ + uint uc_index; + + if (!if_tbl) { + pr_err("Invalid interface table\n"); + return -EINVAL; + } + if (!name) { + pr_err("Invalid name\n"); + return -EINVAL; + } + if (!entry) { + pr_err("Invalid entry pointer\n"); + return -EINVAL; + } + + for (uc_index = 0; uc_index < if_tbl->num_entries; uc_index++) { + if (!strcmp(if_tbl->if_table_entries[uc_index].entry_name, name)) { + memcpy(entry, + &if_tbl->if_table_entries[uc_index], + sizeof(struct interface_table_entry)); + return 0; + } + } + pr_err("Interface table entry '%s' not found\n", name); + + return -ENOENT; +} + +/** + * bl2_plat_get_bl31_params_v2() - Retrieve and fixup BL31 parameters. + * @bl32_entry: Entry point for BL32 (OP-TEE). + * @bl33_entry: Entry point for BL33 (U-Boot/kernel). + * @fdt_addr: Address of the Device Tree Blob (FDT). + * + * Return: Pointer to the populated BL31 parameters structure. + */ +struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry, + uintptr_t bl33_entry, + uintptr_t fdt_addr) +{ + struct bl_params *bl_params; + struct bl_params_node *node; + u64 qcsdi_address = qclib_get_qcsdi_address(); + + /* + * Populate the bl31 params with default values. + */ + bl_params = bl2_plat_get_bl31_params_v2_default(bl32_entry, bl33_entry, + fdt_addr); + + /* + * Fixup the bl31 params based on platform requirements. + */ + for_each_bl_params_node(bl_params, node) { + if (node->image_id == ATF_BL31_IMAGE_ID) { + /* + * Pass QCSDI address to BL31 via arg0 + * This address was populated by qcom_spl_invoke_qclib() + */ + if (qcsdi_address == 0) + pr_warn("QCSDI address not set, BL31 may not function correctly\n"); + + node->ep_info->args.arg0 = qcsdi_address; + pr_debug("Setting BL31 arg0 to QCSDI address: 0x%llx\n", qcsdi_address); + } + } + + return bl_params; +} -- 2.34.1
