SoCs with K3 architecture have an integrated Arm Cortex-R5F subsystem that is comprised of dual-core Arm Cortex-R5F processor cores. This R5 subsytem can be configured at boot time to be either run in a LockStep mode or in an Asymmetric Multi Processing (AMP) fashion in Split-mode. This subsystem has each Tightly-Coupled Memory (TCM) internal memories for each core split between two banks - TCMA and TCMB.
Add a remoteproc driver to support this subsystem to be able to load and boot the R5 cores primarily in LockStep mode or split mode.
Signed-off-by: Lokesh Vutla lokeshvutla@ti.com Signed-off-by: Suman Anna s-anna@ti.com --- drivers/remoteproc/Kconfig | 10 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/ti_k3_r5f_rproc.c | 816 +++++++++++++++++++++++++++ 3 files changed, 827 insertions(+) create mode 100644 drivers/remoteproc/ti_k3_r5f_rproc.c
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig index f54a245424..c2d59ba000 100644 --- a/drivers/remoteproc/Kconfig +++ b/drivers/remoteproc/Kconfig @@ -52,6 +52,16 @@ config REMOTEPROC_TI_K3_ARM64 on various TI K3 family of SoCs through the remote processor framework.
+config REMOTEPROC_TI_K3_R5F + bool "TI K3 R5F remoteproc support" + select REMOTEPROC + depends on ARCH_K3 + depends on TI_SCI_PROTOCOL + help + Say y here to support TI's R5F remote processor subsystems + on various TI K3 family of SoCs through the remote processor + framework. + config REMOTEPROC_TI_POWER bool "Support for TI Power processor" select REMOTEPROC diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile index 271ba55b09..9d247ba5e7 100644 --- a/drivers/remoteproc/Makefile +++ b/drivers/remoteproc/Makefile @@ -11,4 +11,5 @@ obj-$(CONFIG_K3_SYSTEM_CONTROLLER) += k3_system_controller.o obj-$(CONFIG_REMOTEPROC_SANDBOX) += sandbox_testproc.o obj-$(CONFIG_REMOTEPROC_STM32_COPRO) += stm32_copro.o obj-$(CONFIG_REMOTEPROC_TI_K3_ARM64) += ti_k3_arm64_rproc.o +obj-$(CONFIG_REMOTEPROC_TI_K3_R5F) += ti_k3_r5f_rproc.o obj-$(CONFIG_REMOTEPROC_TI_POWER) += ti_power_proc.o diff --git a/drivers/remoteproc/ti_k3_r5f_rproc.c b/drivers/remoteproc/ti_k3_r5f_rproc.c new file mode 100644 index 0000000000..ae1e4b9e04 --- /dev/null +++ b/drivers/remoteproc/ti_k3_r5f_rproc.c @@ -0,0 +1,816 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Texas Instruments' K3 R5 Remoteproc driver + * + * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/ + * Lokesh Vutla lokeshvutla@ti.com + */ + +#include <common.h> +#include <dm.h> +#include <remoteproc.h> +#include <errno.h> +#include <clk.h> +#include <reset.h> +#include <asm/io.h> +#include <linux/kernel.h> +#include <linux/soc/ti/ti_sci_protocol.h> +#include "ti_sci_proc.h" + +/* + * R5F's view of this address can either be for ATCM or BTCM with the other + * at address 0x0 based on loczrama signal. + */ +#define K3_R5_TCM_DEV_ADDR 0x41010000 + +/* R5 TI-SCI Processor Configuration Flags */ +#define PROC_BOOT_CFG_FLAG_R5_DBG_EN 0x00000001 +#define PROC_BOOT_CFG_FLAG_R5_DBG_NIDEN 0x00000002 +#define PROC_BOOT_CFG_FLAG_R5_LOCKSTEP 0x00000100 +#define PROC_BOOT_CFG_FLAG_R5_TEINIT 0x00000200 +#define PROC_BOOT_CFG_FLAG_R5_NMFI_EN 0x00000400 +#define PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE 0x00000800 +#define PROC_BOOT_CFG_FLAG_R5_BTCM_EN 0x00001000 +#define PROC_BOOT_CFG_FLAG_R5_ATCM_EN 0x00002000 +#define PROC_BOOT_CFG_FLAG_GEN_IGN_BOOTVECTOR 0x10000000 + +/* R5 TI-SCI Processor Control Flags */ +#define PROC_BOOT_CTRL_FLAG_R5_CORE_HALT 0x00000001 + +/* R5 TI-SCI Processor Status Flags */ +#define PROC_BOOT_STATUS_FLAG_R5_WFE 0x00000001 +#define PROC_BOOT_STATUS_FLAG_R5_WFI 0x00000002 +#define PROC_BOOT_STATUS_FLAG_R5_CLK_GATED 0x00000004 +#define PROC_BOOT_STATUS_FLAG_R5_LOCKSTEP_PERMITTED 0x00000100 + +#define NR_CORES 2 + +enum cluster_mode { + CLUSTER_MODE_SPLIT = 0, + CLUSTER_MODE_LOCKSTEP, +}; + +/** + * struct k3_r5_mem - internal memory structure + * @cpu_addr: MPU virtual address of the memory region + * @bus_addr: Bus address used to access the memory region + * @dev_addr: Device address from remoteproc view + * @size: Size of the memory region + */ +struct k3_r5f_mem { + void __iomem *cpu_addr; + phys_addr_t bus_addr; + u32 dev_addr; + size_t size; +}; + +/** + * struct k3_r5f_core - K3 R5 core structure + * @dev: cached device pointer + * @cluster: pointer to the parent cluster. + * @reset: reset control handle + * @tsp: TI-SCI processor control handle + * @mem: Array of available internal memories + * @num_mem: Number of available memories + * @atcm_enable: flag to control ATCM enablement + * @btcm_enable: flag to control BTCM enablement + * @loczrama: flag to dictate which TCM is at device address 0x0 + * @in_use: flag to tell if the core is already in use. + */ +struct k3_r5f_core { + struct udevice *dev; + struct k3_r5f_cluster *cluster; + struct reset_ctl reset; + struct ti_sci_proc tsp; + struct k3_r5f_mem *mem; + int num_mems; + u32 atcm_enable; + u32 btcm_enable; + u32 loczrama; + bool in_use; +}; + +/** + * struct k3_r5f_cluster - K3 R5F Cluster structure + * @mode: Mode to configure the Cluster - Split or LockStep + * @cores: Array of pointers to R5 cores within the cluster + */ +struct k3_r5f_cluster { + enum cluster_mode mode; + struct k3_r5f_core *cores[NR_CORES]; +}; + +static bool is_primary_core(struct k3_r5f_core *core) +{ + return core == core->cluster->cores[0]; +} + +static int k3_r5f_proc_request(struct k3_r5f_core *core) +{ + struct k3_r5f_cluster *cluster = core->cluster; + int i, ret; + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP) { + for (i = 0; i < NR_CORES; i++) { + ret = ti_sci_proc_request(&cluster->cores[i]->tsp); + if (ret) + goto proc_release; + } + } else { + ret = ti_sci_proc_request(&core->tsp); + } + + return 0; + +proc_release: + while (i >= 0) { + ti_sci_proc_release(&cluster->cores[i]->tsp); + i--; + } + return ret; +} + +static void k3_r5f_proc_release(struct k3_r5f_core *core) +{ + struct k3_r5f_cluster *cluster = core->cluster; + int i; + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP) + for (i = 0; i < NR_CORES; i++) + ti_sci_proc_release(&cluster->cores[i]->tsp); + else + ti_sci_proc_release(&core->tsp); +} + +static int k3_r5f_lockstep_release(struct k3_r5f_cluster *cluster) +{ + int ret, c; + + dev_dbg(dev, "%s\n", __func__); + + for (c = NR_CORES - 1; c >= 0; c--) { + ret = ti_sci_proc_power_domain_on(&cluster->cores[c]->tsp); + if (ret) + goto unroll_module_reset; + } + + /* deassert local reset on all applicable cores */ + for (c = NR_CORES - 1; c >= 0; c--) { + ret = reset_deassert(&cluster->cores[c]->reset); + if (ret) + goto unroll_local_reset; + } + + return 0; + +unroll_local_reset: + while (c < NR_CORES) { + reset_assert(&cluster->cores[c]->reset); + c++; + } + c = 0; +unroll_module_reset: + while (c < NR_CORES) { + ti_sci_proc_power_domain_off(&cluster->cores[c]->tsp); + c++; + } + + return ret; +} + +static int k3_r5f_split_release(struct k3_r5f_core *core) +{ + int ret; + + dev_dbg(dev, "%s\n", __func__); + + ret = ti_sci_proc_power_domain_on(&core->tsp); + if (ret) { + dev_err(core->dev, "module-reset deassert failed, ret = %d\n", + ret); + return ret; + } + + ret = reset_deassert(&core->reset); + if (ret) { + dev_err(core->dev, "local-reset deassert failed, ret = %d\n", + ret); + if (ti_sci_proc_power_domain_off(&core->tsp)) + dev_warn(core->dev, "module-reset assert back failed\n"); + } + + return ret; +} + +static int k3_r5f_prepare(struct udevice *dev) +{ + struct k3_r5f_core *core = dev_get_priv(dev); + struct k3_r5f_cluster *cluster = core->cluster; + int ret = 0; + + dev_dbg(dev, "%s\n", __func__); + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP) + ret = k3_r5f_lockstep_release(cluster); + else + ret = k3_r5f_split_release(core); + + if (ret) + dev_err(dev, "Unable to enable cores for TCM loading %d\n", + ret); + + return ret; +} + +static int k3_r5f_core_sanity_check(struct k3_r5f_core *core) +{ + struct k3_r5f_cluster *cluster = core->cluster; + + if (core->in_use) { + dev_err(dev, "Invalid op: Trying to load/start on already running core %d\n", + core->tsp.proc_id); + return -EINVAL; + } + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP && !cluster->cores[1]) { + printf("Secondary core is not probed in this cluster\n"); + return -EAGAIN; + } + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP && !is_primary_core(core)) { + dev_err(dev, "Invalid op: Trying to start secondary core %d in lockstep mode\n", + core->tsp.proc_id); + return -EINVAL; + } + + if (cluster->mode == CLUSTER_MODE_SPLIT && !is_primary_core(core)) { + if (!core->cluster->cores[0]->in_use) { + dev_err(dev, "Invalid seq: Enable primary core before loading secondary core\n"); + return -EINVAL; + } + } + + return 0; +} + +/** + * k3_r5f_load() - Load up the Remote processor image + * @dev: rproc device pointer + * @addr: Address at which image is available + * @size: size of the image + * + * Return: 0 if all goes good, else appropriate error message. + */ +static int k3_r5f_load(struct udevice *dev, ulong addr, ulong size) +{ + struct k3_r5f_core *core = dev_get_priv(dev); + u32 boot_vector; + int ret; + + dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size); + + ret = k3_r5f_core_sanity_check(core); + if (ret) + return ret; + + ret = k3_r5f_proc_request(core); + if (ret) + return ret; + + ret = k3_r5f_prepare(dev); + if (ret) { + dev_err(dev, "R5f prepare failed for core %d\n", + core->tsp.proc_id); + goto proc_release; + } + + /* Zero out TCMs so that ECC can be effective on all TCM addresses */ + if (core->atcm_enable) + memset(core->mem[0].cpu_addr, 0x00, core->mem[0].size); + if (core->btcm_enable) + memset(core->mem[1].cpu_addr, 0x00, core->mem[1].size); + + ret = rproc_elf_load_image(dev, addr, size); + if (ret < 0) { + dev_err(dev, "Loading elf failedi %d\n", ret); + goto proc_release; + } + + boot_vector = rproc_elf_get_boot_addr(dev, addr); + + dev_dbg(dev, "%s: Boot vector = 0x%x\n", __func__, boot_vector); + + ret = ti_sci_proc_set_config(&core->tsp, boot_vector, 0, 0); + +proc_release: + k3_r5f_proc_release(core); + + return ret; +} + +static int k3_r5f_core_halt(struct k3_r5f_core *core) +{ + int ret; + + ret = ti_sci_proc_set_control(&core->tsp, + PROC_BOOT_CTRL_FLAG_R5_CORE_HALT, 0); + if (ret) + dev_err(core->dev, "Core %d failed to stop\n", + core->tsp.proc_id); + + return ret; +} + +static int k3_r5f_core_run(struct k3_r5f_core *core) +{ + int ret; + + ret = ti_sci_proc_set_control(&core->tsp, + 0, PROC_BOOT_CTRL_FLAG_R5_CORE_HALT); + if (ret) { + dev_err(core->dev, "Core %d failed to start\n", + core->tsp.proc_id); + return ret; + } + + return 0; +} + +/** + * k3_r5f_start() - Start the remote processor + * @dev: rproc device pointer + * + * Return: 0 if all went ok, else return appropriate error + */ +static int k3_r5f_start(struct udevice *dev) +{ + struct k3_r5f_core *core = dev_get_priv(dev); + struct k3_r5f_cluster *cluster = core->cluster; + int ret, c; + + dev_dbg(dev, "%s\n", __func__); + + ret = k3_r5f_core_sanity_check(core); + if (ret) + return ret; + + ret = k3_r5f_proc_request(core); + if (ret) + return ret; + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP) { + if (is_primary_core(core)) { + for (c = NR_CORES - 1; c >= 0; c--) { + ret = k3_r5f_core_run(cluster->cores[c]); + if (ret) + goto unroll_core_run; + } + } else { + dev_err(dev, "Invalid op: Trying to start secondary core %d in lockstep mode\n", + core->tsp.proc_id); + ret = -EINVAL; + goto proc_release; + } + } else { + ret = k3_r5f_core_run(core); + if (ret) + goto proc_release; + } + + core->in_use = true; + + k3_r5f_proc_release(core); + return 0; + +unroll_core_run: + while (c < NR_CORES) { + k3_r5f_core_halt(cluster->cores[c]); + c++; + } +proc_release: + k3_r5f_proc_release(core); + + return ret; +} + +static int k3_r5f_split_reset(struct k3_r5f_core *core) +{ + int ret; + + dev_dbg(dev, "%s\n", __func__); + + if (reset_assert(&core->reset)) + ret = -EINVAL; + + if (ti_sci_proc_power_domain_off(&core->tsp)) + ret = -EINVAL; + + return ret; +} + +static int k3_r5f_lockstep_reset(struct k3_r5f_cluster *cluster) +{ + int ret = 0, c; + + dev_dbg(dev, "%s\n", __func__); + + for (c = 0; c < NR_CORES; c++) + if (reset_assert(&cluster->cores[c]->reset)) + ret = -EINVAL; + + /* disable PSC modules on all applicable cores */ + for (c = 0; c < NR_CORES; c++) + if (ti_sci_proc_power_domain_off(&cluster->cores[c]->tsp)) + ret = -EINVAL; + + return ret; +} + +static int k3_r5f_unprepare(struct udevice *dev) +{ + struct k3_r5f_core *core = dev_get_priv(dev); + struct k3_r5f_cluster *cluster = core->cluster; + int ret; + + dev_dbg(dev, "%s\n", __func__); + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP) { + if (is_primary_core(core)) + ret = k3_r5f_lockstep_reset(cluster); + } else { + ret = k3_r5f_split_reset(core); + } + + if (ret) + dev_warn(dev, "Unable to enable cores for TCM loading %d\n", + ret); + + return 0; +} + +static int k3_r5f_stop(struct udevice *dev) +{ + struct k3_r5f_core *core = dev_get_priv(dev); + struct k3_r5f_cluster *cluster = core->cluster; + int c, ret; + + dev_dbg(dev, "%s\n", __func__); + + ret = k3_r5f_proc_request(core); + if (ret) + return ret; + + core->in_use = false; + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP) { + if (is_primary_core(core)) { + for (c = 0; c < NR_CORES; c++) + k3_r5f_core_halt(cluster->cores[c]); + } else { + dev_err(dev, "Invalid op: Trying to stop secondary core in lockstep mode\n"); + ret = -EINVAL; + goto proc_release; + } + } else { + k3_r5f_core_halt(core); + } + + ret = k3_r5f_unprepare(dev); +proc_release: + k3_r5f_proc_release(core); + return ret; +} + +static void *k3_r5f_da_to_va(struct udevice *dev, ulong da, ulong size) +{ + struct k3_r5f_core *core = dev_get_priv(dev); + void __iomem *va = NULL; + phys_addr_t bus_addr; + u32 dev_addr, offset; + ulong mem_size; + int i; + + dev_dbg(dev, "%s\n", __func__); + + if (size <= 0) + return NULL; + + for (i = 0; i < core->num_mems; i++) { + bus_addr = core->mem[i].bus_addr; + dev_addr = core->mem[i].dev_addr; + mem_size = core->mem[i].size; + + if (da >= bus_addr && (da + size) <= (bus_addr + mem_size)) { + offset = da - bus_addr; + va = core->mem[i].cpu_addr + offset; + return (__force void *)va; + } + + if (da >= dev_addr && (da + size) <= (dev_addr + mem_size)) { + offset = da - dev_addr; + va = core->mem[i].cpu_addr + offset; + return (__force void *)va; + } + } + + /* Assume it is DDR region and return da */ + return map_physmem(da, size, MAP_NOCACHE); +} + +static int k3_r5f_init(struct udevice *dev) +{ + return 0; +} + +static int k3_r5f_reset(struct udevice *dev) +{ + return 0; +} + +static const struct dm_rproc_ops k3_r5f_rproc_ops = { + .init = k3_r5f_init, + .reset = k3_r5f_reset, + .start = k3_r5f_start, + .stop = k3_r5f_stop, + .load = k3_r5f_load, + .device_to_virt = k3_r5f_da_to_va, +}; + +static int k3_r5f_rproc_configure(struct k3_r5f_core *core) +{ + struct k3_r5f_cluster *cluster = core->cluster; + u32 set_cfg = 0, clr_cfg = 0, cfg, ctrl, sts; + u64 boot_vec = 0; + int ret; + + dev_dbg(dev, "%s\n", __func__); + + ret = ti_sci_proc_request(&core->tsp); + if (ret < 0) + return ret; + + /* Do not touch boot vector now. Load will take care of it. */ + clr_cfg |= PROC_BOOT_CFG_FLAG_GEN_IGN_BOOTVECTOR; + + ret = ti_sci_proc_get_status(&core->tsp, &boot_vec, &cfg, &ctrl, &sts); + if (ret) + goto out; + + /* Sanity check for Lockstep mode */ + if (cluster->mode && is_primary_core(core) && + !(sts & PROC_BOOT_STATUS_FLAG_R5_LOCKSTEP_PERMITTED)) { + dev_err(core->dev, "LockStep mode not permitted on this device\n"); + ret = -EINVAL; + goto out; + } + + /* Primary core only configuration */ + if (is_primary_core(core)) { + /* always enable ARM mode */ + clr_cfg |= PROC_BOOT_CFG_FLAG_R5_TEINIT; + if (cluster->mode == CLUSTER_MODE_LOCKSTEP) + set_cfg |= PROC_BOOT_CFG_FLAG_R5_LOCKSTEP; + else + clr_cfg |= PROC_BOOT_CFG_FLAG_R5_LOCKSTEP; + } + + if (core->atcm_enable) + set_cfg |= PROC_BOOT_CFG_FLAG_R5_ATCM_EN; + else + clr_cfg |= PROC_BOOT_CFG_FLAG_R5_ATCM_EN; + + if (core->btcm_enable) + set_cfg |= PROC_BOOT_CFG_FLAG_R5_BTCM_EN; + else + clr_cfg |= PROC_BOOT_CFG_FLAG_R5_BTCM_EN; + + if (core->loczrama) + set_cfg |= PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE; + else + clr_cfg |= PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE; + + ret = k3_r5f_core_halt(core); + if (ret) + goto out; + + ret = ti_sci_proc_set_config(&core->tsp, boot_vec, set_cfg, clr_cfg); +out: + ti_sci_proc_release(&core->tsp); + return ret; +} + +static int ti_sci_proc_of_to_priv(struct udevice *dev, struct ti_sci_proc *tsp) +{ + u32 ids[2]; + int ret; + + dev_dbg(dev, "%s\n", __func__); + + tsp->sci = ti_sci_get_by_phandle(dev, "ti,sci"); + if (IS_ERR(tsp->sci)) { + dev_err(dev, "ti_sci get failed: %ld\n", PTR_ERR(tsp->sci)); + return PTR_ERR(tsp->sci); + } + + ret = dev_read_u32_array(dev, "ti,sci-proc-ids", ids, 2); + if (ret) { + dev_err(dev, "Proc IDs not populated %d\n", ret); + return ret; + } + + tsp->ops = &tsp->sci->ops.proc_ops; + tsp->proc_id = ids[0]; + tsp->host_id = ids[1]; + tsp->dev_id = dev_read_u32_default(dev, "ti,sci-dev-id", + TI_SCI_RESOURCE_NULL); + if (tsp->dev_id == TI_SCI_RESOURCE_NULL) { + dev_err(dev, "Device ID not populated %d\n", ret); + return -ENODEV; + } + + return 0; +} + +static int k3_r5f_of_to_priv(struct k3_r5f_core *core) +{ + int ret; + + dev_dbg(dev, "%s\n", __func__); + + core->atcm_enable = dev_read_u32_default(core->dev, "atcm-enable", 0); + core->btcm_enable = dev_read_u32_default(core->dev, "btcm-enable", 1); + core->loczrama = dev_read_u32_default(core->dev, "loczrama", 1); + + ret = ti_sci_proc_of_to_priv(core->dev, &core->tsp); + if (ret) + return ret; + + ret = reset_get_by_index(core->dev, 0, &core->reset); + if (ret) { + dev_err(core->dev, "Reset lines not available: %d\n", ret); + return ret; + } + + return 0; +} + +static int k3_r5f_core_of_get_memories(struct k3_r5f_core *core) +{ + static const char * const mem_names[] = {"atcm", "btcm"}; + struct udevice *dev = core->dev; + int i; + + dev_dbg(dev, "%s\n", __func__); + + core->num_mems = ARRAY_SIZE(mem_names); + core->mem = calloc(core->num_mems, sizeof(*core->mem)); + if (!core->mem) + return -ENOMEM; + + for (i = 0; i < core->num_mems; i++) { + core->mem[i].bus_addr = dev_read_addr_size_name(dev, + mem_names[i], + (fdt_addr_t *)&core->mem[i].size); + if (core->mem[i].bus_addr == FDT_ADDR_T_NONE) { + dev_err(dev, "%s bus address not found\n", + mem_names[i]); + return -EINVAL; + } + core->mem[i].cpu_addr = map_physmem(core->mem[i].bus_addr, + core->mem[i].size, + MAP_NOCACHE); + if (!strcmp(mem_names[i], "atcm")) { + core->mem[i].dev_addr = core->loczrama ? + 0 : K3_R5_TCM_DEV_ADDR; + } else { + core->mem[i].dev_addr = core->loczrama ? + K3_R5_TCM_DEV_ADDR : 0; + } + + dev_dbg(dev, "memory %8s: bus addr %pa size 0x%zx va %p da 0x%x\n", + mem_names[i], &core->mem[i].bus_addr, + core->mem[i].size, core->mem[i].cpu_addr, + core->mem[i].dev_addr); + } + + return 0; +} + +/** + * k3_r5f_probe() - Basic probe + * @dev: corresponding k3 remote processor device + * + * Return: 0 if all goes good, else appropriate error message. + */ +static int k3_r5f_probe(struct udevice *dev) +{ + struct k3_r5f_cluster *cluster = dev_get_priv(dev->parent); + struct k3_r5f_core *core = dev_get_priv(dev); + bool r_state; + int ret; + + dev_dbg(dev, "%s\n", __func__); + + core->dev = dev; + ret = k3_r5f_of_to_priv(core); + if (ret) + return ret; + + core->cluster = cluster; + /* Assume Primary core gets probed first */ + if (!cluster->cores[0]) + cluster->cores[0] = core; + else + cluster->cores[1] = core; + + ret = k3_r5f_core_of_get_memories(core); + if (ret) { + dev_err(dev, "Rproc getting internal memories failed\n"); + return ret; + } + + ret = core->tsp.sci->ops.dev_ops.is_on(core->tsp.sci, core->tsp.dev_id, + &r_state, &core->in_use); + if (ret) + return ret; + + if (core->in_use) { + dev_info(dev, "Core %d is already in use. No rproc commands work\n", + core->tsp.proc_id); + return 0; + } + + /* Make sure Local reset is asserted. Redundant? */ + reset_assert(&core->reset); + + ret = k3_r5f_rproc_configure(core); + if (ret) { + dev_err(dev, "rproc configure failed %d\n", ret); + return ret; + } + + dev_dbg(dev, "Remoteproc successfully probed\n"); + + return 0; +} + +static int k3_r5f_remove(struct udevice *dev) +{ + struct k3_r5f_core *core = dev_get_priv(dev); + + free(core->mem); + + ti_sci_proc_release(&core->tsp); + + return 0; +} + +static const struct udevice_id k3_r5f_rproc_ids[] = { + { .compatible = "ti,am654-r5f"}, + { .compatible = "ti,j721e-r5f"}, + {} +}; + +U_BOOT_DRIVER(k3_r5f_rproc) = { + .name = "k3_r5f_rproc", + .of_match = k3_r5f_rproc_ids, + .id = UCLASS_REMOTEPROC, + .ops = &k3_r5f_rproc_ops, + .probe = k3_r5f_probe, + .remove = k3_r5f_remove, + .priv_auto_alloc_size = sizeof(struct k3_r5f_core), +}; + +static int k3_r5f_cluster_probe(struct udevice *dev) +{ + struct k3_r5f_cluster *cluster = dev_get_priv(dev); + + dev_dbg(dev, "%s\n", __func__); + + cluster->mode = dev_read_u32_default(dev, "lockstep-mode", + CLUSTER_MODE_LOCKSTEP); + + if (device_get_child_count(dev) != 2) { + dev_err(dev, "Invalid number of R5 cores"); + return -EINVAL; + } + + dev_dbg(dev, "%s: Cluster successfully probed in %s mode\n", + __func__, cluster->mode ? "lockstep" : "split"); + + return 0; +} + +static const struct udevice_id k3_r5fss_ids[] = { + { .compatible = "ti,am654-r5fss"}, + { .compatible = "ti,j721e-r5fss"}, + {} +}; + +U_BOOT_DRIVER(k3_r5fss) = { + .name = "k3_r5fss", + .of_match = k3_r5fss_ids, + .id = UCLASS_MISC, + .probe = k3_r5f_cluster_probe, + .priv_auto_alloc_size = sizeof(struct k3_r5f_cluster), +};