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// SPDX-License-Identifier: GPL-2.0+
/*
* K3: System Firmware Loader
*
* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
* Andreas Dannenberg <dannenberg@ti.com>
*/
#include <common.h>
#include <spl.h>
#include <malloc.h>
#include <remoteproc.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include <asm/arch/sys_proto.h>
/* Name of the FIT image nodes for SYSFW and its config data */
#define SYSFW_FIRMWARE "sysfw.bin"
#define SYSFW_CFG_BOARD "board-cfg.bin"
#define SYSFW_CFG_PM "pm-cfg.bin"
#define SYSFW_CFG_RM "rm-cfg.bin"
#define SYSFW_CFG_SEC "sec-cfg.bin"
static bool sysfw_loaded;
static void *sysfw_load_address;
/*
* Populate SPL hook to override the default load address used by the SPL
* loader function with a custom address for SYSFW loading.
*/
struct image_header *spl_get_load_buffer(ssize_t offset, size_t size)
{
if (sysfw_loaded)
return (struct image_header *)(CONFIG_SYS_TEXT_BASE + offset);
else if (sysfw_load_address)
return sysfw_load_address;
else
panic("SYSFW load address not defined!");
}
/*
* Populate SPL hook to skip the default SPL loader FIT post-processing steps
* during SYSFW loading and return to the calling function so we can perform
* our own custom processing.
*/
bool spl_load_simple_fit_skip_processing(void)
{
return !sysfw_loaded;
}
static int fit_get_data_by_name(const void *fit, int images, const char *name,
const void **addr, size_t *size)
{
int node_offset;
node_offset = fdt_subnode_offset(fit, images, name);
if (node_offset < 0)
return -ENOENT;
return fit_image_get_data(fit, node_offset, addr, size);
}
static void k3_sysfw_load_using_fit(void *fit)
{
int images;
const void *sysfw_addr;
size_t sysfw_size;
int ret;
/* Find the node holding the images information */
images = fdt_path_offset(fit, FIT_IMAGES_PATH);
if (images < 0)
panic("Cannot find /images node (%d)\n", images);
/* Extract System Firmware (SYSFW) image from FIT */
ret = fit_get_data_by_name(fit, images, SYSFW_FIRMWARE,
&sysfw_addr, &sysfw_size);
if (ret < 0)
panic("Error accessing %s node in FIT (%d)\n", SYSFW_FIRMWARE,
ret);
/*
* Start up system controller firmware
*
* It is assumed that remoteproc device 0 is the corresponding
* system-controller that runs SYSFW. Make sure DT reflects the same.
*/
ret = rproc_dev_init(0);
if (ret)
panic("rproc failed to be initialized (%d)\n", ret);
ret = rproc_load(0, (ulong)sysfw_addr, (ulong)sysfw_size);
if (ret)
panic("Firmware failed to start on rproc (%d)\n", ret);
ret = rproc_start(0);
if (ret)
panic("Firmware init failed on rproc (%d)\n", ret);
}
static void k3_sysfw_configure_using_fit(void *fit,
struct ti_sci_handle *ti_sci)
{
struct ti_sci_board_ops *board_ops = &ti_sci->ops.board_ops;
int images;
const void *cfg_fragment_addr;
size_t cfg_fragment_size;
int ret;
/* Find the node holding the images information */
images = fdt_path_offset(fit, FIT_IMAGES_PATH);
if (images < 0)
panic("Cannot find /images node (%d)\n", images);
/* Extract board configuration from FIT */
ret = fit_get_data_by_name(fit, images, SYSFW_CFG_BOARD,
&cfg_fragment_addr, &cfg_fragment_size);
if (ret < 0)
panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_BOARD,
ret);
/* Apply board configuration to SYSFW */
ret = board_ops->board_config(ti_sci,
(u64)(u32)cfg_fragment_addr,
(u32)cfg_fragment_size);
if (ret)
panic("Failed to set board configuration (%d)\n", ret);
/* Extract power/clock (PM) specific configuration from FIT */
ret = fit_get_data_by_name(fit, images, SYSFW_CFG_PM,
&cfg_fragment_addr, &cfg_fragment_size);
if (ret < 0)
panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_PM,
ret);
/* Apply power/clock (PM) specific configuration to SYSFW */
ret = board_ops->board_config_pm(ti_sci,
(u64)(u32)cfg_fragment_addr,
(u32)cfg_fragment_size);
if (ret)
panic("Failed to set board PM configuration (%d)\n", ret);
/* Extract resource management (RM) specific configuration from FIT */
ret = fit_get_data_by_name(fit, images, SYSFW_CFG_RM,
&cfg_fragment_addr, &cfg_fragment_size);
if (ret < 0)
panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_RM,
ret);
/* Apply resource management (RM) configuration to SYSFW */
ret = board_ops->board_config_rm(ti_sci,
(u64)(u32)cfg_fragment_addr,
(u32)cfg_fragment_size);
if (ret)
panic("Failed to set board RM configuration (%d)\n", ret);
/* Extract security specific configuration from FIT */
ret = fit_get_data_by_name(fit, images, SYSFW_CFG_SEC,
&cfg_fragment_addr, &cfg_fragment_size);
if (ret < 0)
panic("Error accessing %s node in FIT (%d)\n", SYSFW_CFG_SEC,
ret);
/* Apply security configuration to SYSFW */
ret = board_ops->board_config_security(ti_sci,
(u64)(u32)cfg_fragment_addr,
(u32)cfg_fragment_size);
if (ret)
panic("Failed to set board security configuration (%d)\n",
ret);
}
void k3_sysfw_loader(void (*config_pm_done_callback)(void))
{
struct spl_image_info spl_image = { 0 };
struct spl_boot_device bootdev = { 0 };
struct ti_sci_handle *ti_sci;
int ret;
/* Reserve a block of aligned memory for loading the SYSFW image */
sysfw_load_address = memalign(ARCH_DMA_MINALIGN,
CONFIG_K3_SYSFW_IMAGE_SIZE_MAX);
if (!sysfw_load_address)
panic("Error allocating %u bytes of memory for SYSFW image\n",
CONFIG_K3_SYSFW_IMAGE_SIZE_MAX);
debug("%s: allocated %u bytes at 0x%p\n", __func__,
CONFIG_K3_SYSFW_IMAGE_SIZE_MAX, sysfw_load_address);
/* Set load address for legacy modes that bypass spl_get_load_buffer */
spl_image.load_addr = (uintptr_t)sysfw_load_address;
bootdev.boot_device = spl_boot_device();
/* Load combined System Controller firmware and config data image */
switch (bootdev.boot_device) {
#if CONFIG_IS_ENABLED(MMC_SUPPORT)
case BOOT_DEVICE_MMC1:
case BOOT_DEVICE_MMC2:
case BOOT_DEVICE_MMC2_2:
ret = spl_mmc_load(&spl_image, &bootdev,
#ifdef CONFIG_K3_SYSFW_IMAGE_NAME
CONFIG_K3_SYSFW_IMAGE_NAME,
#else
NULL,
#endif
#ifdef CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_PART
CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_PART,
#else
0,
#endif
#ifdef CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_SECT
CONFIG_K3_SYSFW_IMAGE_MMCSD_RAW_MODE_SECT);
#else
0);
#endif
break;
#endif
default:
panic("Loading SYSFW image from device %u not supported!\n",
bootdev.boot_device);
}
if (ret)
panic("Error %d occurred during loading SYSFW image!\n", ret);
/*
* Now that SYSFW got loaded set helper flag to restore regular SPL
* loader behavior so we can later boot into the next stage as expected.
*/
sysfw_loaded = true;
/* Ensure the SYSFW image is in FIT format */
if (image_get_magic((const image_header_t *)sysfw_load_address) !=
FDT_MAGIC)
panic("SYSFW image not in FIT format!\n");
/* Extract and start SYSFW */
k3_sysfw_load_using_fit(sysfw_load_address);
/* Get handle for accessing SYSFW services */
ti_sci = get_ti_sci_handle();
/* Parse and apply the different SYSFW configuration fragments */
k3_sysfw_configure_using_fit(sysfw_load_address, ti_sci);
/*
* Now that all clocks and PM aspects are setup, invoke a user-
* provided callback function. Usually this callback would be used
* to setup or re-configure the U-Boot console UART.
*/
if (config_pm_done_callback)
config_pm_done_callback();
/*
* Output System Firmware version info. Note that since the
* 'firmware_description' field is not guaranteed to be zero-
* terminated we manually add a \0 terminator if needed. Further
* note that we intentionally no longer rely on the extended
* printf() formatter '%.*s' to not having to require a more
* full-featured printf() implementation.
*/
char fw_desc[sizeof(ti_sci->version.firmware_description) + 1];
strncpy(fw_desc, ti_sci->version.firmware_description,
sizeof(ti_sci->version.firmware_description));
fw_desc[sizeof(fw_desc) - 1] = '\0';
printf("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n",
ti_sci->version.abi_major, ti_sci->version.abi_minor,
ti_sci->version.firmware_revision, fw_desc);
}
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