mirror of
https://github.com/brain-hackers/u-boot-brain
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341 lines
9.3 KiB
C
341 lines
9.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* K3: System Firmware Loader
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*
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* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
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* Andreas Dannenberg <dannenberg@ti.com>
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*/
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#include <common.h>
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#include <image.h>
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#include <log.h>
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#include <spl.h>
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#include <malloc.h>
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#include <remoteproc.h>
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#include <asm/cache.h>
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#include <linux/soc/ti/ti_sci_protocol.h>
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#include <g_dnl.h>
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#include <usb.h>
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#include <dfu.h>
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#include <dm/uclass-internal.h>
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#include <spi_flash.h>
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#include <asm/arch/sys_proto.h>
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#include "common.h"
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DECLARE_GLOBAL_DATA_PTR;
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/* Name of the FIT image nodes for SYSFW and its config data */
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#define SYSFW_FIRMWARE "sysfw.bin"
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#define SYSFW_CFG_BOARD "board-cfg.bin"
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#define SYSFW_CFG_PM "pm-cfg.bin"
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#define SYSFW_CFG_RM "rm-cfg.bin"
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#define SYSFW_CFG_SEC "sec-cfg.bin"
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static bool sysfw_loaded;
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static void *sysfw_load_address;
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/*
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* Populate SPL hook to override the default load address used by the SPL
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* loader function with a custom address for SYSFW loading.
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*/
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struct image_header *spl_get_load_buffer(ssize_t offset, size_t size)
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{
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if (sysfw_loaded)
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return (struct image_header *)(CONFIG_SYS_TEXT_BASE + offset);
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else if (sysfw_load_address)
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return sysfw_load_address;
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else
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panic("SYSFW load address not defined!");
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}
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/*
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* Populate SPL hook to skip the default SPL loader FIT post-processing steps
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* during SYSFW loading and return to the calling function so we can perform
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* our own custom processing.
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*/
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bool spl_load_simple_fit_skip_processing(void)
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{
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return !sysfw_loaded;
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}
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static int fit_get_data_by_name(const void *fit, int images, const char *name,
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const void **addr, size_t *size)
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{
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int node_offset;
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node_offset = fdt_subnode_offset(fit, images, name);
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if (node_offset < 0)
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return -ENOENT;
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return fit_image_get_data(fit, node_offset, addr, size);
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}
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static void k3_sysfw_load_using_fit(void *fit)
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{
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int images;
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const void *sysfw_addr;
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size_t sysfw_size;
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int ret;
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/* Find the node holding the images information */
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images = fdt_path_offset(fit, FIT_IMAGES_PATH);
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if (images < 0)
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panic("Cannot find /images node (%d)\n", images);
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/* Extract System Firmware (SYSFW) image from FIT */
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ret = fit_get_data_by_name(fit, images, SYSFW_FIRMWARE,
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&sysfw_addr, &sysfw_size);
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if (ret < 0)
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panic("Error accessing %s node in FIT (%d)\n", SYSFW_FIRMWARE,
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ret);
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/*
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* Start up system controller firmware
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*
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* It is assumed that remoteproc device 0 is the corresponding
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* system-controller that runs SYSFW. Make sure DT reflects the same.
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*/
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ret = rproc_dev_init(0);
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if (ret)
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panic("rproc failed to be initialized (%d)\n", ret);
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ret = rproc_load(0, (ulong)sysfw_addr, (ulong)sysfw_size);
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if (ret)
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panic("Firmware failed to start on rproc (%d)\n", ret);
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ret = rproc_start(0);
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if (ret)
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panic("Firmware init failed on rproc (%d)\n", ret);
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}
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static void k3_sysfw_configure_using_fit(void *fit,
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struct ti_sci_handle *ti_sci)
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{
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struct ti_sci_board_ops *board_ops = &ti_sci->ops.board_ops;
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int images;
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const void *cfg_fragment_addr;
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size_t cfg_fragment_size;
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int ret;
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/* Find the node holding the images information */
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images = fdt_path_offset(fit, FIT_IMAGES_PATH);
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if (images < 0)
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panic("Cannot find /images node (%d)\n", images);
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/* Extract board configuration from FIT */
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ret = fit_get_data_by_name(fit, images, SYSFW_CFG_BOARD,
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&cfg_fragment_addr, &cfg_fragment_size);
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if (ret < 0)
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panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_BOARD,
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ret);
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/* Apply board configuration to SYSFW */
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ret = board_ops->board_config(ti_sci,
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(u64)(u32)cfg_fragment_addr,
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(u32)cfg_fragment_size);
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if (ret)
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panic("Failed to set board configuration (%d)\n", ret);
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/* Extract power/clock (PM) specific configuration from FIT */
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ret = fit_get_data_by_name(fit, images, SYSFW_CFG_PM,
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&cfg_fragment_addr, &cfg_fragment_size);
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if (ret < 0)
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panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_PM,
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ret);
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/* Apply power/clock (PM) specific configuration to SYSFW */
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ret = board_ops->board_config_pm(ti_sci,
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(u64)(u32)cfg_fragment_addr,
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(u32)cfg_fragment_size);
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if (ret)
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panic("Failed to set board PM configuration (%d)\n", ret);
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/* Extract resource management (RM) specific configuration from FIT */
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ret = fit_get_data_by_name(fit, images, SYSFW_CFG_RM,
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&cfg_fragment_addr, &cfg_fragment_size);
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if (ret < 0)
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panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_RM,
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ret);
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/* Apply resource management (RM) configuration to SYSFW */
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ret = board_ops->board_config_rm(ti_sci,
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(u64)(u32)cfg_fragment_addr,
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(u32)cfg_fragment_size);
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if (ret)
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panic("Failed to set board RM configuration (%d)\n", ret);
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/* Extract security specific configuration from FIT */
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ret = fit_get_data_by_name(fit, images, SYSFW_CFG_SEC,
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&cfg_fragment_addr, &cfg_fragment_size);
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if (ret < 0)
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panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_SEC,
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ret);
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/* Apply security configuration to SYSFW */
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ret = board_ops->board_config_security(ti_sci,
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(u64)(u32)cfg_fragment_addr,
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(u32)cfg_fragment_size);
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if (ret)
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panic("Failed to set board security configuration (%d)\n",
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ret);
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}
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#if CONFIG_IS_ENABLED(DFU)
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static int k3_sysfw_dfu_download(void *addr)
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{
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char dfu_str[50];
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int ret;
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sprintf(dfu_str, "sysfw.itb ram 0x%p 0x%x", addr,
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CONFIG_K3_SYSFW_IMAGE_SIZE_MAX);
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ret = dfu_config_entities(dfu_str, "ram", "0");
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if (ret) {
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dfu_free_entities();
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goto exit;
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}
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run_usb_dnl_gadget(0, "usb_dnl_dfu");
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exit:
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dfu_free_entities();
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return ret;
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}
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#endif
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#if CONFIG_IS_ENABLED(SPI_LOAD)
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static void *k3_sysfw_get_spi_addr(void)
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{
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struct udevice *dev;
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fdt_addr_t addr;
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int ret;
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ret = uclass_find_device_by_seq(UCLASS_SPI, CONFIG_SF_DEFAULT_BUS,
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true, &dev);
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if (ret)
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return NULL;
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addr = dev_read_addr_index(dev, 1);
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if (addr == FDT_ADDR_T_NONE)
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return NULL;
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return (void *)(addr + CONFIG_K3_SYSFW_IMAGE_SPI_OFFS);
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}
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#endif
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void k3_sysfw_loader(void (*config_pm_pre_callback) (void),
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void (*config_pm_done_callback)(void))
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{
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struct spl_image_info spl_image = { 0 };
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struct spl_boot_device bootdev = { 0 };
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struct ti_sci_handle *ti_sci;
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int ret = 0;
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/* Reserve a block of aligned memory for loading the SYSFW image */
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sysfw_load_address = memalign(ARCH_DMA_MINALIGN,
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CONFIG_K3_SYSFW_IMAGE_SIZE_MAX);
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if (!sysfw_load_address)
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panic("Error allocating %u bytes of memory for SYSFW image\n",
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CONFIG_K3_SYSFW_IMAGE_SIZE_MAX);
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debug("%s: allocated %u bytes at 0x%p\n", __func__,
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CONFIG_K3_SYSFW_IMAGE_SIZE_MAX, sysfw_load_address);
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/* Set load address for legacy modes that bypass spl_get_load_buffer */
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spl_image.load_addr = (uintptr_t)sysfw_load_address;
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bootdev.boot_device = spl_boot_device();
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/* Load combined System Controller firmware and config data image */
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switch (bootdev.boot_device) {
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#if CONFIG_IS_ENABLED(MMC_SUPPORT)
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case BOOT_DEVICE_MMC1:
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case BOOT_DEVICE_MMC2:
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case BOOT_DEVICE_MMC2_2:
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ret = spl_mmc_load(&spl_image, &bootdev,
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#ifdef CONFIG_K3_SYSFW_IMAGE_NAME
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CONFIG_K3_SYSFW_IMAGE_NAME,
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#else
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NULL,
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#endif
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#ifdef CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_PART
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CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_PART,
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#else
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0,
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#endif
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#ifdef CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_SECT
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CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_SECT);
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#else
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0);
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#endif
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break;
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#endif
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#if CONFIG_IS_ENABLED(SPI_LOAD)
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case BOOT_DEVICE_SPI:
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sysfw_load_address = k3_sysfw_get_spi_addr();
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if (!sysfw_load_address)
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ret = -ENODEV;
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break;
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#endif
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#if CONFIG_IS_ENABLED(YMODEM_SUPPORT)
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case BOOT_DEVICE_UART:
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#ifdef CONFIG_K3_EARLY_CONS
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/*
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* Establish a serial console if not yet available as required
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* for UART-based boot. For this use the early console feature
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* that allows setting up a UART for use before SYSFW has been
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* brought up. Note that the associated UART module's clocks
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* must have gotten enabled by the ROM bootcode which will be
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* the case when continuing to boot serially from the same
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* UART that the ROM loaded the initial bootloader from.
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*/
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if (!gd->have_console)
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early_console_init();
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#endif
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ret = spl_ymodem_load_image(&spl_image, &bootdev);
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break;
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#endif
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#if CONFIG_IS_ENABLED(DFU)
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case BOOT_DEVICE_DFU:
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ret = k3_sysfw_dfu_download(sysfw_load_address);
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break;
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#endif
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default:
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panic("Loading SYSFW image from device %u not supported!\n",
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bootdev.boot_device);
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}
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if (ret)
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panic("Error %d occurred during loading SYSFW image!\n", ret);
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/*
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* Now that SYSFW got loaded set helper flag to restore regular SPL
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* loader behavior so we can later boot into the next stage as expected.
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*/
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sysfw_loaded = true;
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/* Ensure the SYSFW image is in FIT format */
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if (image_get_magic((const image_header_t *)sysfw_load_address) !=
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FDT_MAGIC)
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panic("SYSFW image not in FIT format!\n");
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/* Extract and start SYSFW */
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k3_sysfw_load_using_fit(sysfw_load_address);
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/* Get handle for accessing SYSFW services */
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ti_sci = get_ti_sci_handle();
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if (config_pm_pre_callback)
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config_pm_pre_callback();
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/* Parse and apply the different SYSFW configuration fragments */
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k3_sysfw_configure_using_fit(sysfw_load_address, ti_sci);
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/*
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* Now that all clocks and PM aspects are setup, invoke a user-
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* provided callback function. Usually this callback would be used
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* to setup or re-configure the U-Boot console UART.
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*/
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if (config_pm_done_callback)
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config_pm_done_callback();
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}
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