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https://github.com/AsahiLinux/u-boot
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f1061c5701
Several ethernet drivers load firmware from FIT images. Convert them to use the fit_get_data helpers. Signed-off-by: Sean Anderson <sean.anderson@seco.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Peng Fan <peng.fan@nxp.com>
350 lines
7.8 KiB
C
350 lines
7.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2015-2016 Freescale Semiconductor, Inc.
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* Copyright 2017,2021 NXP
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*/
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/*
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* @file
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* Contains all the functions to handle parsing and loading of PE firmware
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* files.
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*/
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#include <dm.h>
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#include <dm/device-internal.h>
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#include <image.h>
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#include <log.h>
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#include <malloc.h>
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#include <linux/bitops.h>
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#include <net/pfe_eth/pfe_eth.h>
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#include <net/pfe_eth/pfe_firmware.h>
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#include <spi_flash.h>
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#ifdef CONFIG_CHAIN_OF_TRUST
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#include <fsl_validate.h>
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#endif
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#define PFE_FIRMWARE_FIT_CNF_NAME "config@1"
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static const void *pfe_fit_addr;
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#ifdef CONFIG_CHAIN_OF_TRUST
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static const void *pfe_esbc_hdr_addr;
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#endif
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/*
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* PFE elf firmware loader.
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* Loads an elf firmware image into a list of PE's (specified using a bitmask)
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*
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* @param pe_mask Mask of PE id's to load firmware to
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* @param pfe_firmware Pointer to the firmware image
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*
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* Return: 0 on success, a negative value on error
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*/
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static int pfe_load_elf(int pe_mask, uint8_t *pfe_firmware)
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{
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Elf32_Ehdr *elf_hdr = (Elf32_Ehdr *)pfe_firmware;
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Elf32_Half sections = be16_to_cpu(elf_hdr->e_shnum);
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Elf32_Shdr *shdr = (Elf32_Shdr *)(pfe_firmware +
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be32_to_cpu(elf_hdr->e_shoff));
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int id, section;
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int ret;
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debug("%s: no of sections: %d\n", __func__, sections);
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/* Some sanity checks */
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if (strncmp((char *)&elf_hdr->e_ident[EI_MAG0], ELFMAG, SELFMAG)) {
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printf("%s: incorrect elf magic number\n", __func__);
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return -1;
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}
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if (elf_hdr->e_ident[EI_CLASS] != ELFCLASS32) {
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printf("%s: incorrect elf class(%x)\n", __func__,
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elf_hdr->e_ident[EI_CLASS]);
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return -1;
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}
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if (elf_hdr->e_ident[EI_DATA] != ELFDATA2MSB) {
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printf("%s: incorrect elf data(%x)\n", __func__,
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elf_hdr->e_ident[EI_DATA]);
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return -1;
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}
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if (be16_to_cpu(elf_hdr->e_type) != ET_EXEC) {
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printf("%s: incorrect elf file type(%x)\n", __func__,
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be16_to_cpu(elf_hdr->e_type));
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return -1;
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}
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for (section = 0; section < sections; section++, shdr++) {
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if (!(be32_to_cpu(shdr->sh_flags) & (SHF_WRITE | SHF_ALLOC |
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SHF_EXECINSTR)))
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continue;
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for (id = 0; id < MAX_PE; id++)
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if (pe_mask & BIT(id)) {
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ret = pe_load_elf_section(id,
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pfe_firmware, shdr);
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if (ret < 0)
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goto err;
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}
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}
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return 0;
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err:
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return ret;
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}
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/*
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* Get PFE firmware from FIT image
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*
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* @param data pointer to PFE firmware
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* @param size pointer to size of the firmware
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* @param fw_name pfe firmware name, either class or tmu
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*
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* Return: 0 on success, a negative value on error
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*/
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static int pfe_get_fw(const void **data,
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size_t *size, char *fw_name)
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{
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return fit_get_data_conf_prop(pfe_fit_addr, fw_name, data, size);
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}
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/*
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* Check PFE FIT image
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*
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* Return: 0 on success, a negative value on error
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*/
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static int pfe_fit_check(void)
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{
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int ret = 0;
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ret = fdt_check_header(pfe_fit_addr);
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if (ret) {
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printf("PFE Firmware: Bad firmware image (not a FIT image)\n");
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return ret;
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}
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if (fit_check_format(pfe_fit_addr, IMAGE_SIZE_INVAL)) {
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printf("PFE Firmware: Bad firmware image (bad FIT header)\n");
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ret = -1;
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return ret;
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}
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return ret;
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}
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int pfe_spi_flash_init(void)
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{
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struct spi_flash *pfe_flash;
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int ret = 0;
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void *addr = malloc(CONFIG_SYS_LS_PFE_FW_LENGTH);
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if (!addr)
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return -ENOMEM;
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pfe_flash = spi_flash_probe(CONFIG_SYS_FSL_PFE_SPI_BUS,
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CONFIG_SYS_FSL_PFE_SPI_CS,
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CONFIG_SYS_FSL_PFE_SPI_MAX_HZ,
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CONFIG_SYS_FSL_PFE_SPI_MODE);
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if (!pfe_flash) {
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printf("SF: probe for pfe failed\n");
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free(addr);
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return -ENODEV;
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}
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ret = spi_flash_read(pfe_flash,
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CONFIG_SYS_LS_PFE_FW_ADDR,
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CONFIG_SYS_LS_PFE_FW_LENGTH,
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addr);
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if (ret) {
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printf("SF: read for pfe failed\n");
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free(addr);
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spi_flash_free(pfe_flash);
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return ret;
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}
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#ifdef CONFIG_CHAIN_OF_TRUST
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void *hdr_addr = malloc(CONFIG_SYS_LS_PFE_ESBC_LENGTH);
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if (!hdr_addr) {
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free(addr);
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spi_flash_free(pfe_flash);
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return -ENOMEM;
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}
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ret = spi_flash_read(pfe_flash,
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CONFIG_SYS_LS_PFE_ESBC_ADDR,
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CONFIG_SYS_LS_PFE_ESBC_LENGTH,
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hdr_addr);
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if (ret) {
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printf("SF: failed to read pfe esbc header\n");
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free(addr);
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free(hdr_addr);
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spi_flash_free(pfe_flash);
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return ret;
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}
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pfe_esbc_hdr_addr = hdr_addr;
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#endif
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pfe_fit_addr = addr;
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spi_flash_free(pfe_flash);
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return ret;
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}
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/*
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* PFE firmware initialization.
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* Loads different firmware files from FIT image.
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* Initializes PE IMEM/DMEM and UTIL-PE DDR
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* Initializes control path symbol addresses (by looking them up in the elf
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* firmware files
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* Takes PE's out of reset
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*
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* Return: 0 on success, a negative value on error
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*/
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int pfe_firmware_init(void)
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{
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#define PFE_KEY_HASH NULL
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char *pfe_firmware_name;
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const void *raw_image_addr;
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size_t raw_image_size = 0;
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u8 *pfe_firmware;
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#ifdef CONFIG_CHAIN_OF_TRUST
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uintptr_t pfe_esbc_hdr = 0;
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uintptr_t pfe_img_addr = 0;
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#endif
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int ret = 0;
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int fw_count, max_fw_count;
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const char *p;
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ret = pfe_spi_flash_init();
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if (ret)
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goto err;
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ret = pfe_fit_check();
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if (ret)
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goto err;
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#ifdef CONFIG_CHAIN_OF_TRUST
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pfe_esbc_hdr = (uintptr_t)pfe_esbc_hdr_addr;
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pfe_img_addr = (uintptr_t)pfe_fit_addr;
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if (fsl_check_boot_mode_secure() != 0) {
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/*
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* In case of failure in validation, fsl_secboot_validate
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* would not return back in case of Production environment
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* with ITS=1. In Development environment (ITS=0 and
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* SB_EN=1), the function may return back in case of
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* non-fatal failures.
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*/
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ret = fsl_secboot_validate(pfe_esbc_hdr,
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PFE_KEY_HASH,
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&pfe_img_addr);
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if (ret != 0)
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printf("PFE firmware(s) validation failed\n");
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else
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printf("PFE firmware(s) validation Successful\n");
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}
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#endif
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p = env_get("load_util");
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if (!p) {
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max_fw_count = 2;
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} else {
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max_fw_count = dectoul(p, NULL);
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if (max_fw_count)
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max_fw_count = 3;
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else
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max_fw_count = 2;
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}
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for (fw_count = 0; fw_count < max_fw_count; fw_count++) {
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switch (fw_count) {
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case 0:
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pfe_firmware_name = "class_slowpath";
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break;
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case 1:
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pfe_firmware_name = "tmu_slowpath";
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break;
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case 2:
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pfe_firmware_name = "util_slowpath";
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break;
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}
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if (pfe_get_fw(&raw_image_addr, &raw_image_size,
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pfe_firmware_name)) {
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printf("%s firmware couldn't be found in FIT image\n",
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pfe_firmware_name);
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break;
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}
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pfe_firmware = malloc(raw_image_size);
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if (!pfe_firmware)
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return -ENOMEM;
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memcpy((void *)pfe_firmware, (void *)raw_image_addr,
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raw_image_size);
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switch (fw_count) {
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case 0:
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env_set_addr("class_elf_firmware", pfe_firmware);
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env_set_addr("class_elf_size", (void *)raw_image_size);
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break;
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case 1:
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env_set_addr("tmu_elf_firmware", pfe_firmware);
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env_set_addr("tmu_elf_size", (void *)raw_image_size);
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break;
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case 2:
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env_set_addr("util_elf_firmware", pfe_firmware);
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env_set_addr("util_elf_size", (void *)raw_image_size);
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break;
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}
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}
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raw_image_addr = NULL;
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pfe_firmware = NULL;
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raw_image_size = 0;
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for (fw_count = 0; fw_count < 2; fw_count++) {
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if (fw_count == 0)
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pfe_firmware_name = "class";
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else if (fw_count == 1)
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pfe_firmware_name = "tmu";
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pfe_get_fw(&raw_image_addr, &raw_image_size, pfe_firmware_name);
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pfe_firmware = malloc(raw_image_size);
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if (!pfe_firmware)
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return -ENOMEM;
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memcpy((void *)pfe_firmware, (void *)raw_image_addr,
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raw_image_size);
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if (fw_count == 0)
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ret = pfe_load_elf(CLASS_MASK, pfe_firmware);
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else if (fw_count == 1)
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ret = pfe_load_elf(TMU_MASK, pfe_firmware);
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if (ret < 0) {
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printf("%s: %s firmware load failed\n", __func__,
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pfe_firmware_name);
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goto err;
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}
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debug("%s: %s firmware loaded\n", __func__, pfe_firmware_name);
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free(pfe_firmware);
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}
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tmu_enable(0xb);
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class_enable();
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gpi_enable(HGPI_BASE_ADDR);
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err:
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return ret;
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}
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/*
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* PFE firmware cleanup
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* Puts PE's in reset
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*/
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void pfe_firmware_exit(void)
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{
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debug("%s\n", __func__);
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class_disable();
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tmu_disable(0xf);
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hif_tx_disable();
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hif_rx_disable();
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}
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