Add APIs to set a firmware_name to a rproc and boot the rproc with the same firmware.
Clients can call rproc_set_firmware() API to set firmware_name for a rproc whereas rproc_boot() will load the firmware set by rproc_set_firmware() to a buffer by calling request_firmware_into_buf(). rproc_boot() will then load the firmware file to the remote processor and start the remote processor. Also include "fs-loader.h" and make remoteproc driver select FS_LOADER in Kconfig so that we can call request_firmware_into_buf() from remoteproc driver. Signed-off-by: MD Danish Anwar <danishan...@ti.com> --- Changes from v3 to v4: *) No functional change. Splitted the patch out of the series as suggested by Nishant. *) Droppped the RFC tag. v3: https://lore.kernel.org/all/20240124064930.1787929-4-danishan...@ti.com/ drivers/remoteproc/Kconfig | 1 + drivers/remoteproc/rproc-uclass.c | 85 +++++++++++++++++++++++++++++++ include/remoteproc.h | 35 +++++++++++++ 3 files changed, 121 insertions(+) diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig index 781de530af..0fdf1b38ea 100644 --- a/drivers/remoteproc/Kconfig +++ b/drivers/remoteproc/Kconfig @@ -10,6 +10,7 @@ menu "Remote Processor drivers" # All users should depend on DM config REMOTEPROC bool + select FS_LOADER depends on DM # Please keep the configuration alphabetically sorted. diff --git a/drivers/remoteproc/rproc-uclass.c b/drivers/remoteproc/rproc-uclass.c index 28b362c887..76db4157f7 100644 --- a/drivers/remoteproc/rproc-uclass.c +++ b/drivers/remoteproc/rproc-uclass.c @@ -13,6 +13,7 @@ #include <log.h> #include <malloc.h> #include <virtio_ring.h> +#include <fs_loader.h> #include <remoteproc.h> #include <asm/io.h> #include <dm/device-internal.h> @@ -961,3 +962,87 @@ unsigned long rproc_parse_resource_table(struct udevice *dev, struct rproc *cfg) return 1; } + +int rproc_set_firmware(struct udevice *rproc_dev, const char *fw_name) +{ + struct dm_rproc_uclass_pdata *uc_pdata; + int len; + char *p; + + if (!rproc_dev || !fw_name) + return -EINVAL; + + uc_pdata = dev_get_uclass_plat(rproc_dev); + + len = strcspn(fw_name, "\n"); + if (!len) { + debug("can't provide empty string for firmware name\n"); + return -EINVAL; + } + + p = strndup(fw_name, len); + if (!p) + return -ENOMEM; + + uc_pdata->fw_name = p; + + return 0; +} + +int rproc_boot(struct udevice *rproc_dev, size_t fw_size) +{ + struct dm_rproc_uclass_pdata *uc_pdata; + struct udevice *fs_loader; + void *addr = malloc(fw_size); + int core_id, ret = 0; + char *firmware; + ulong rproc_addr; + + if (!rproc_dev) + return -EINVAL; + + if (!addr) + return -ENOMEM; + + uc_pdata = dev_get_uclass_plat(rproc_dev); + core_id = dev_seq(rproc_dev); + firmware = uc_pdata->fw_name; + + if (!firmware) { + debug("No firmware set for rproc core %d\n", core_id); + return -EINVAL; + } + + /* Initialize all rproc cores */ + rproc_init(); + + /* Loading firmware to a given address */ + ret = get_fs_loader(&fs_loader); + if (ret) { + debug("could not get fs loader: %d\n", ret); + return ret; + } + + ret = request_firmware_into_buf(fs_loader, firmware, addr, fw_size, 0); + if (ret < 0) { + debug("could not request %s: %d\n", firmware, ret); + return ret; + } + + rproc_addr = (ulong)addr; + + ret = rproc_load(core_id, rproc_addr, ret); + if (ret) { + debug("failed to load %s to rproc core %d from addr 0x%08lX err %d\n", + uc_pdata->fw_name, core_id, rproc_addr, ret); + return ret; + } + + ret = rproc_start(core_id); + if (ret) { + debug("failed to start rproc core %d\n", core_id); + return ret; + } + + return ret; +} diff --git a/include/remoteproc.h b/include/remoteproc.h index 91a88791a4..e53f85ba51 100644 --- a/include/remoteproc.h +++ b/include/remoteproc.h @@ -403,6 +403,7 @@ enum rproc_mem_type { * @name: Platform-specific way of naming the Remote proc * @mem_type: one of 'enum rproc_mem_type' * @driver_plat_data: driver specific platform data that may be needed. + * @fw_name: firmware name * * This can be accessed with dev_get_uclass_plat() for any UCLASS_REMOTEPROC * device. @@ -412,6 +413,7 @@ struct dm_rproc_uclass_pdata { const char *name; enum rproc_mem_type mem_type; void *driver_plat_data; + char *fw_name; }; /** @@ -705,6 +707,35 @@ unsigned long rproc_parse_resource_table(struct udevice *dev, struct resource_table *rproc_find_resource_table(struct udevice *dev, unsigned int addr, int *tablesz); +/** + * rproc_set_firmware() - assign a new firmware + * @rproc_dev: device for wich new firmware is being assigned + * @fw_name: new firmware name to be assigned + * + * This function allows remoteproc drivers or clients to configure a custom + * firmware name. The function does not trigger a remote processor boot, + * only sets the firmware name used for a subsequent boot. + * + * This function sets the fw_name field in uclass pdata of the Remote proc + * + * Return: 0 on success or a negative value upon failure + */ +int rproc_set_firmware(struct udevice *rproc_dev, const char *fw_name); + +/** + * rproc_boot() - boot a remote processor + * @rproc_dev: rproc device to boot + * @fw_size: Size of the memory to allocate for firmeware + * + * Boot a remote processor (i.e. load its firmware, power it on, ...). + * + * This function first loads the firmware set in the uclass pdata of Remote + * processor to a buffer and then loads firmware to the remote processor + * using rproc_load(). + * + * Return: 0 on success, and an appropriate error value otherwise + */ +int rproc_boot(struct udevice *rproc_dev, size_t fw_size); #else static inline int rproc_init(void) { return -ENOSYS; } static inline int rproc_dev_init(int id) { return -ENOSYS; } @@ -744,6 +775,10 @@ static inline int rproc_elf_load_rsc_table(struct udevice *dev, ulong fw_addr, ulong fw_size, ulong *rsc_addr, ulong *rsc_size) { return -ENOSYS; } +static inline int rproc_set_firmware(struct udevice *rproc_dev, const char *fw_name) +{ return -ENOSYS; } +static inline int rproc_boot(struct udevice *rproc_dev, size_t fw_size) +{ return -ENOSYS; } #endif #endif /* _RPROC_H_ */ -- 2.34.1
