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/*
* Copyright 2015-2016 Freescale Semiconductor, Inc.
* Copyright 2017 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* @file
* Contains all the functions to handle parsing and loading of PE firmware
* files.
*/
#include <net/pfe_eth/pfe_eth.h>
#include <net/pfe_eth/pfe_firmware.h>
#define PFE_FIRMEWARE_FIT_CNF_NAME "config@1"
static const void *pfe_fit_addr = (void *)CONFIG_SYS_LS_PFE_FW_ADDR;
/*
* PFE elf firmware loader.
* Loads an elf firmware image into a list of PE's (specified using a bitmask)
*
* @param pe_mask Mask of PE id's to load firmware to
* @param pfe_firmware Pointer to the firmware image
*
* @return 0 on success, a negative value on error
*/
static int pfe_load_elf(int pe_mask, uint8_t *pfe_firmware)
{
Elf32_Ehdr *elf_hdr = (Elf32_Ehdr *)pfe_firmware;
Elf32_Half sections = be16_to_cpu(elf_hdr->e_shnum);
Elf32_Shdr *shdr = (Elf32_Shdr *)(pfe_firmware +
be32_to_cpu(elf_hdr->e_shoff));
int id, section;
int ret;
debug("%s: no of sections: %d\n", __func__, sections);
/* Some sanity checks */
if (strncmp((char *)&elf_hdr->e_ident[EI_MAG0], ELFMAG, SELFMAG)) {
printf("%s: incorrect elf magic number\n", __func__);
return -1;
}
if (elf_hdr->e_ident[EI_CLASS] != ELFCLASS32) {
printf("%s: incorrect elf class(%x)\n", __func__,
elf_hdr->e_ident[EI_CLASS]);
return -1;
}
if (elf_hdr->e_ident[EI_DATA] != ELFDATA2MSB) {
printf("%s: incorrect elf data(%x)\n", __func__,
elf_hdr->e_ident[EI_DATA]);
return -1;
}
if (be16_to_cpu(elf_hdr->e_type) != ET_EXEC) {
printf("%s: incorrect elf file type(%x)\n", __func__,
be16_to_cpu(elf_hdr->e_type));
return -1;
}
for (section = 0; section < sections; section++, shdr++) {
if (!(be32_to_cpu(shdr->sh_flags) & (SHF_WRITE | SHF_ALLOC |
SHF_EXECINSTR)))
continue;
for (id = 0; id < MAX_PE; id++)
if (pe_mask & BIT(id)) {
ret = pe_load_elf_section(id,
pfe_firmware, shdr);
if (ret < 0)
goto err;
}
}
return 0;
err:
return ret;
}
/*
* Get PFE firmware from FIT image
*
* @param data pointer to PFE firmware
* @param size pointer to size of the firmware
* @param fw_name pfe firmware name, either class or tmu
*
* @return 0 on success, a negative value on error
*/
static int pfe_get_fw(const void **data,
size_t *size, char *fw_name)
{
int conf_node_off, fw_node_off;
char *conf_node_name = NULL;
char *desc;
int ret = 0;
conf_node_name = PFE_FIRMEWARE_FIT_CNF_NAME;
conf_node_off = fit_conf_get_node(pfe_fit_addr, conf_node_name);
if (conf_node_off < 0) {
printf("PFE Firmware: %s: no such config\n", conf_node_name);
return -ENOENT;
}
fw_node_off = fit_conf_get_prop_node(pfe_fit_addr, conf_node_off,
fw_name);
if (fw_node_off < 0) {
printf("PFE Firmware: No '%s' in config\n",
fw_name);
return -ENOLINK;
}
if (!(fit_image_verify(pfe_fit_addr, fw_node_off))) {
printf("PFE Firmware: Bad firmware image (bad CRC)\n");
return -EINVAL;
}
if (fit_image_get_data(pfe_fit_addr, fw_node_off, data, size)) {
printf("PFE Firmware: Can't get %s subimage data/size",
fw_name);
return -ENOENT;
}
ret = fit_get_desc(pfe_fit_addr, fw_node_off, &desc);
if (ret)
printf("PFE Firmware: Can't get description\n");
else
printf("%s\n", desc);
return ret;
}
/*
* Check PFE FIT image
*
* @return 0 on success, a negative value on error
*/
static int pfe_fit_check(void)
{
int ret = 0;
ret = fdt_check_header(pfe_fit_addr);
if (ret) {
printf("PFE Firmware: Bad firmware image (not a FIT image)\n");
return ret;
}
if (!fit_check_format(pfe_fit_addr)) {
printf("PFE Firmware: Bad firmware image (bad FIT header)\n");
ret = -1;
return ret;
}
return ret;
}
/*
* PFE firmware initialization.
* Loads different firmware files from FIT image.
* Initializes PE IMEM/DMEM and UTIL-PE DDR
* Initializes control path symbol addresses (by looking them up in the elf
* firmware files
* Takes PE's out of reset
*
* @return 0 on success, a negative value on error
*/
int pfe_firmware_init(void)
{
char *pfe_firmware_name;
const void *raw_image_addr;
size_t raw_image_size = 0;
u8 *pfe_firmware;
int ret = 0;
int fw_count;
ret = pfe_fit_check();
if (ret)
goto err;
for (fw_count = 0; fw_count < 2; fw_count++) {
if (fw_count == 0)
pfe_firmware_name = "class";
else if (fw_count == 1)
pfe_firmware_name = "tmu";
pfe_get_fw(&raw_image_addr, &raw_image_size, pfe_firmware_name);
pfe_firmware = malloc(raw_image_size);
if (!pfe_firmware)
return -ENOMEM;
memcpy((void *)pfe_firmware, (void *)raw_image_addr,
raw_image_size);
if (fw_count == 0)
ret = pfe_load_elf(CLASS_MASK, pfe_firmware);
else if (fw_count == 1)
ret = pfe_load_elf(TMU_MASK, pfe_firmware);
if (ret < 0) {
printf("%s: %s firmware load failed\n", __func__,
pfe_firmware_name);
goto err;
}
debug("%s: %s firmware loaded\n", __func__, pfe_firmware_name);
free(pfe_firmware);
}
tmu_enable(0xb);
class_enable();
gpi_enable(HGPI_BASE_ADDR);
err:
return ret;
}
/*
* PFE firmware cleanup
* Puts PE's in reset
*/
void pfe_firmware_exit(void)
{
debug("%s\n", __func__);
class_disable();
tmu_disable(0xf);
hif_tx_disable();
hif_rx_disable();
}
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