blob: 7309573a3fadde01e9ccfdbc63ba88d9be3d9d4e [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0+
/*
* K3: R5 Common Architecture initialization
*
* Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/
*/
#include <linux/printk.h>
#include <linux/types.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <image.h>
#include <fs_loader.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include <spl.h>
#include <remoteproc.h>
#include <elf.h>
#include "../common.h"
#if IS_ENABLED(CONFIG_SYS_K3_SPL_ATF)
enum {
IMAGE_ID_ATF,
IMAGE_ID_OPTEE,
IMAGE_ID_SPL,
IMAGE_ID_DM_FW,
IMAGE_AMT,
};
#if CONFIG_IS_ENABLED(FIT_IMAGE_POST_PROCESS)
static const char *image_os_match[IMAGE_AMT] = {
"arm-trusted-firmware",
"tee",
"U-Boot",
"DM",
};
#endif
static struct image_info fit_image_info[IMAGE_AMT];
void init_env(void)
{
#ifdef CONFIG_SPL_ENV_SUPPORT
char *part;
env_init();
env_relocate();
switch (spl_boot_device()) {
case BOOT_DEVICE_MMC2:
part = env_get("bootpart");
env_set("storage_interface", "mmc");
env_set("fw_dev_part", part);
break;
case BOOT_DEVICE_SPI:
env_set("storage_interface", "ubi");
env_set("fw_ubi_mtdpart", "UBI");
env_set("fw_ubi_volume", "UBI0");
break;
default:
printf("%s from device %u not supported!\n",
__func__, spl_boot_device());
return;
}
#endif
}
int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr)
{
struct udevice *fsdev;
char *name = NULL;
int size = 0;
if (!IS_ENABLED(CONFIG_FS_LOADER))
return 0;
*loadaddr = 0;
#ifdef CONFIG_SPL_ENV_SUPPORT
switch (spl_boot_device()) {
case BOOT_DEVICE_MMC2:
name = env_get(name_fw);
*loadaddr = env_get_hex(name_loadaddr, *loadaddr);
break;
default:
printf("Loading rproc fw image from device %u not supported!\n",
spl_boot_device());
return 0;
}
#endif
if (!*loadaddr)
return 0;
if (!get_fs_loader(&fsdev)) {
size = request_firmware_into_buf(fsdev, name, (void *)*loadaddr,
0, 0);
}
return size;
}
void release_resources_for_core_shutdown(void)
{
struct ti_sci_handle *ti_sci = get_ti_sci_handle();
struct ti_sci_dev_ops *dev_ops = &ti_sci->ops.dev_ops;
struct ti_sci_proc_ops *proc_ops = &ti_sci->ops.proc_ops;
int ret;
u32 i;
/* Iterate through list of devices to put (shutdown) */
for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
u32 id = put_device_ids[i];
ret = dev_ops->put_device(ti_sci, id);
if (ret)
panic("Failed to put device %u (%d)\n", id, ret);
}
/* Iterate through list of cores to put (shutdown) */
for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
u32 id = put_core_ids[i];
/*
* Queue up the core shutdown request. Note that this call
* needs to be followed up by an actual invocation of an WFE
* or WFI CPU instruction.
*/
ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
if (ret)
panic("Failed sending core %u shutdown message (%d)\n",
id, ret);
}
}
void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
{
typedef void __noreturn (*image_entry_noargs_t)(void);
struct ti_sci_handle *ti_sci = get_ti_sci_handle();
u32 loadaddr = 0;
int ret, size = 0, shut_cpu = 0;
/* Release all the exclusive devices held by SPL before starting ATF */
ti_sci->ops.dev_ops.release_exclusive_devices(ti_sci);
ret = rproc_init();
if (ret)
panic("rproc failed to be initialized (%d)\n", ret);
init_env();
if (!fit_image_info[IMAGE_ID_DM_FW].image_start) {
size = load_firmware("name_mcur5f0_0fw", "addr_mcur5f0_0load",
&loadaddr);
}
/*
* It is assumed that remoteproc device 1 is the corresponding
* Cortex-A core which runs ATF. Make sure DT reflects the same.
*/
if (!fit_image_info[IMAGE_ID_ATF].image_start)
fit_image_info[IMAGE_ID_ATF].image_start =
spl_image->entry_point;
ret = rproc_load(1, fit_image_info[IMAGE_ID_ATF].image_start, 0x200);
if (ret)
panic("%s: ATF failed to load on rproc (%d)\n", __func__, ret);
#if CONFIG_IS_ENABLED(FIT_IMAGE_POST_PROCESS)
/* Authenticate ATF */
void *image_addr = (void *)fit_image_info[IMAGE_ID_ATF].image_start;
debug("%s: Authenticating image: addr=%lx, size=%ld, os=%s\n", __func__,
fit_image_info[IMAGE_ID_ATF].image_start,
fit_image_info[IMAGE_ID_ATF].image_len,
image_os_match[IMAGE_ID_ATF]);
ti_secure_image_post_process(&image_addr,
(size_t *)&fit_image_info[IMAGE_ID_ATF].image_len);
/* Authenticate OPTEE */
image_addr = (void *)fit_image_info[IMAGE_ID_OPTEE].image_start;
debug("%s: Authenticating image: addr=%lx, size=%ld, os=%s\n", __func__,
fit_image_info[IMAGE_ID_OPTEE].image_start,
fit_image_info[IMAGE_ID_OPTEE].image_len,
image_os_match[IMAGE_ID_OPTEE]);
ti_secure_image_post_process(&image_addr,
(size_t *)&fit_image_info[IMAGE_ID_OPTEE].image_len);
#endif
if (!fit_image_info[IMAGE_ID_DM_FW].image_len &&
!(size > 0 && valid_elf_image(loadaddr))) {
shut_cpu = 1;
goto start_arm64;
}
if (!fit_image_info[IMAGE_ID_DM_FW].image_start) {
loadaddr = load_elf_image_phdr(loadaddr);
} else {
loadaddr = fit_image_info[IMAGE_ID_DM_FW].image_start;
if (valid_elf_image(loadaddr))
loadaddr = load_elf_image_phdr(loadaddr);
}
debug("%s: jumping to address %x\n", __func__, loadaddr);
start_arm64:
/* Add an extra newline to differentiate the ATF logs from SPL */
printf("Starting ATF on ARM64 core...\n\n");
ret = rproc_start(1);
if (ret)
panic("%s: ATF failed to start on rproc (%d)\n", __func__, ret);
if (shut_cpu) {
debug("Shutting down...\n");
release_resources_for_core_shutdown();
while (1)
asm volatile("wfe");
}
image_entry_noargs_t image_entry = (image_entry_noargs_t)loadaddr;
image_entry();
}
#endif
void disable_linefill_optimization(void)
{
u32 actlr;
/*
* On K3 devices there are 2 conditions where R5F can deadlock:
* 1.When software is performing series of store operations to
* cacheable write back/write allocate memory region and later
* on software execute barrier operation (DSB or DMB). R5F may
* hang at the barrier instruction.
* 2.When software is performing a mix of load and store operations
* within a tight loop and store operations are all writing to
* cacheable write back/write allocates memory regions, R5F may
* hang at one of the load instruction.
*
* To avoid the above two conditions disable linefill optimization
* inside Cortex R5F.
*/
asm("mrc p15, 0, %0, c1, c0, 1" : "=r" (actlr));
actlr |= (1 << 13); /* Set DLFO bit */
asm("mcr p15, 0, %0, c1, c0, 1" : : "r" (actlr));
}
static void remove_fwl_regions(struct fwl_data fwl_data, size_t num_regions,
enum k3_firewall_region_type fwl_type)
{
struct ti_sci_fwl_ops *fwl_ops;
struct ti_sci_handle *ti_sci;
struct ti_sci_msg_fwl_region region;
size_t j;
ti_sci = get_ti_sci_handle();
fwl_ops = &ti_sci->ops.fwl_ops;
for (j = 0; j < fwl_data.regions; j++) {
region.fwl_id = fwl_data.fwl_id;
region.region = j;
region.n_permission_regs = 3;
fwl_ops->get_fwl_region(ti_sci, &region);
/* Don't disable the background regions */
if (region.control != 0 &&
((region.control >> K3_FIREWALL_BACKGROUND_BIT) & 1) == fwl_type) {
pr_debug("Attempting to disable firewall %5d (%25s)\n",
region.fwl_id, fwl_data.name);
region.control = 0;
if (fwl_ops->set_fwl_region(ti_sci, &region))
pr_err("Could not disable firewall %5d (%25s)\n",
region.fwl_id, fwl_data.name);
}
}
}
void remove_fwl_configs(struct fwl_data *fwl_data, size_t fwl_data_size)
{
size_t i;
for (i = 0; i < fwl_data_size; i++) {
remove_fwl_regions(fwl_data[i], fwl_data[i].regions,
K3_FIREWALL_REGION_FOREGROUND);
remove_fwl_regions(fwl_data[i], fwl_data[i].regions,
K3_FIREWALL_REGION_BACKGROUND);
}
}
#if CONFIG_IS_ENABLED(FIT_IMAGE_POST_PROCESS)
void board_fit_image_post_process(const void *fit, int node, void **p_image,
size_t *p_size)
{
int len;
int i;
const char *os;
u32 addr;
os = fdt_getprop(fit, node, "os", &len);
addr = fdt_getprop_u32_default_node(fit, node, 0, "entry", -1);
debug("%s: processing image: addr=%x, size=%d, os=%s\n", __func__,
addr, *p_size, os);
for (i = 0; i < IMAGE_AMT; i++) {
if (!strcmp(os, image_os_match[i])) {
fit_image_info[i].image_start = addr;
fit_image_info[i].image_len = *p_size;
debug("%s: matched image for ID %d\n", __func__, i);
break;
}
}
/*
* Only DM and the DTBs are being authenticated here,
* rest will be authenticated when A72 cluster is up
*/
if ((i != IMAGE_ID_ATF) && (i != IMAGE_ID_OPTEE)) {
ti_secure_image_check_binary(p_image, p_size);
ti_secure_image_post_process(p_image, p_size);
} else {
ti_secure_image_check_binary(p_image, p_size);
}
}
#endif