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u-boot/arch/arm/mach-k3/sysfw-loader.c
Tero Kristo 925698daac arm: mach-k3: sysfw-loader: pass boardcfg to sciserver 
Copy the contents of the board config loaded from sysfw.itb into an
EXTBOOT shared memory buffer that gets passed to sciserver. This only
needs to be done if EXTBOOT area has not been populated by ROM code yet.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
2021-06-11 16:34:52 +05:30

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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 <dm.h>
#include <image.h>
#include <log.h>
#include <spl.h>
#include <malloc.h>
#include <remoteproc.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include <g_dnl.h>
#include <usb.h>
#include <dfu.h>
#include <dm/uclass-internal.h>
#include <spi_flash.h>
#include <asm/arch/sys_proto.h>
#include "common.h"
DECLARE_GLOBAL_DATA_PTR;
/* 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"
/*
* It is assumed that remoteproc device 0 is the corresponding
* system-controller that runs SYSFW. Make sure DT reflects the same.
*/
#define K3_SYSTEM_CONTROLLER_RPROC_ID 0
#define COMMON_HEADER_ADDRESS 0x41cffb00
#define BOARDCFG_ADDRESS 0x41c80000
#define COMP_TYPE_SBL_DATA 0x11
#define DESC_TYPE_BOARDCFG_PM_INDEX 0x2
#define DESC_TYPE_BOARDCFG_RM_INDEX 0x3
#define BOARD_CONFIG_RM_DESC_TYPE 0x000c
#define BOARD_CONFIG_PM_DESC_TYPE 0x000e
struct extboot_comp {
u32 comp_type;
u32 boot_core;
u32 comp_opts;
u64 dest_addr;
u32 comp_size;
};
struct extboot_header {
u8 magic[8];
u32 num_comps;
struct extboot_comp comps[5];
u32 reserved;
};
struct bcfg_desc {
u16 type;
u16 offset;
u16 size;
u8 devgrp;
u8 reserved;
} __packed;
struct bcfg_header {
u8 num_elems;
u8 sw_rev;
struct bcfg_desc descs[4];
u16 reserved;
} __packed;
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_start_system_controller(int rproc_id, bool rproc_loaded,
ulong addr, ulong size)
{
int ret;
ret = rproc_dev_init(rproc_id);
if (ret)
panic("rproc failed to be initialized (%d)\n", ret);
if (!rproc_loaded) {
ret = rproc_load(rproc_id, addr, 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_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 */
k3_start_system_controller(K3_SYSTEM_CONTROLLER_RPROC_ID, false,
(ulong)sysfw_addr, (ulong)sysfw_size);
}
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;
u8 *buf;
struct extboot_header *common_header;
struct bcfg_header *bcfg_header;
struct extboot_comp *comp;
struct bcfg_desc *desc;
u32 addr;
bool copy_bcfg = false;
/* 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 */
if (!IS_ENABLED(CONFIG_K3_DM_FW)) {
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);
} else {
/* Initialize shared memory boardconfig buffer */
buf = (u8 *)COMMON_HEADER_ADDRESS;
common_header = (struct extboot_header *)buf;
/* Check if we have a struct populated by ROM in memory already */
if (strcmp((char *)common_header->magic, "EXTBOOT"))
copy_bcfg = true;
if (copy_bcfg) {
strcpy((char *)common_header->magic, "EXTBOOT");
common_header->num_comps = 1;
comp = &common_header->comps[0];
comp->comp_type = COMP_TYPE_SBL_DATA;
comp->boot_core = 0x10;
comp->comp_opts = 0;
addr = (u32)BOARDCFG_ADDRESS;
comp->dest_addr = addr;
comp->comp_size = sizeof(*bcfg_header);
bcfg_header = (struct bcfg_header *)addr;
bcfg_header->num_elems = 2;
bcfg_header->sw_rev = 0;
desc = &bcfg_header->descs[0];
desc->type = BOARD_CONFIG_PM_DESC_TYPE;
desc->offset = sizeof(*bcfg_header);
desc->size = cfg_fragment_size;
comp->comp_size += desc->size;
desc->devgrp = 0;
desc->reserved = 0;
memcpy((u8 *)bcfg_header + desc->offset,
cfg_fragment_addr, cfg_fragment_size);
bcfg_header->descs[1].offset = desc->offset + desc->size;
}
}
/* 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);
if (copy_bcfg) {
desc = &bcfg_header->descs[1];
desc->type = BOARD_CONFIG_RM_DESC_TYPE;
desc->size = cfg_fragment_size;
comp->comp_size += desc->size;
desc->devgrp = 0;
desc->reserved = 0;
memcpy((u8 *)bcfg_header + desc->offset, cfg_fragment_addr,
cfg_fragment_size);
}
/* 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);
}
#if CONFIG_IS_ENABLED(DFU)
static int k3_sysfw_dfu_download(void *addr)
{
char dfu_str[50];
int ret;
sprintf(dfu_str, "sysfw.itb ram 0x%p 0x%x", addr,
CONFIG_K3_SYSFW_IMAGE_SIZE_MAX);
ret = dfu_config_entities(dfu_str, "ram", "0");
if (ret) {
dfu_free_entities();
goto exit;
}
run_usb_dnl_gadget(0, "usb_dnl_dfu");
exit:
dfu_free_entities();
return ret;
}
#endif
#if CONFIG_IS_ENABLED(SPI_LOAD)
static void *k3_sysfw_get_spi_addr(void)
{
struct udevice *dev;
fdt_addr_t addr;
int ret;
ret = uclass_find_device_by_seq(UCLASS_SPI, CONFIG_SF_DEFAULT_BUS,
&dev);
if (ret)
return NULL;
addr = dev_read_addr_index(dev, 1);
if (addr == FDT_ADDR_T_NONE)
return NULL;
return (void *)(addr + CONFIG_K3_SYSFW_IMAGE_SPI_OFFS);
}
#endif
void k3_sysfw_loader(bool rom_loaded_sysfw,
void (*config_pm_pre_callback)(void),
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 = 0;
if (rom_loaded_sysfw) {
k3_start_system_controller(K3_SYSTEM_CONTROLLER_RPROC_ID,
rom_loaded_sysfw, 0, 0);
sysfw_loaded = true;
return;
}
/* 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
#if CONFIG_IS_ENABLED(SPI_LOAD)
case BOOT_DEVICE_SPI:
sysfw_load_address = k3_sysfw_get_spi_addr();
if (!sysfw_load_address)
ret = -ENODEV;
break;
#endif
#if CONFIG_IS_ENABLED(YMODEM_SUPPORT)
case BOOT_DEVICE_UART:
#ifdef CONFIG_K3_EARLY_CONS
/*
* Establish a serial console if not yet available as required
* for UART-based boot. For this use the early console feature
* that allows setting up a UART for use before SYSFW has been
* brought up. Note that the associated UART module's clocks
* must have gotten enabled by the ROM bootcode which will be
* the case when continuing to boot serially from the same
* UART that the ROM loaded the initial bootloader from.
*/
if (!gd->have_console)
early_console_init();
#endif
ret = spl_ymodem_load_image(&spl_image, &bootdev);
break;
#endif
#if CONFIG_IS_ENABLED(DFU)
case BOOT_DEVICE_DFU:
ret = k3_sysfw_dfu_download(sysfw_load_address);
break;
#endif
#if CONFIG_IS_ENABLED(USB_STORAGE)
case BOOT_DEVICE_USB:
ret = spl_usb_load(&spl_image, &bootdev,
CONFIG_SYS_USB_FAT_BOOT_PARTITION,
#ifdef CONFIG_K3_SYSFW_IMAGE_NAME
CONFIG_K3_SYSFW_IMAGE_NAME);
#else
NULL);
#endif
#endif
break;
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();
if (config_pm_pre_callback)
config_pm_pre_callback();
/* 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();
}
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