diff options
Diffstat (limited to 'drivers/firmware')
21 files changed, 185 insertions, 48 deletions
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c index 73140b854b31..c15928b8c5cc 100644 --- a/drivers/firmware/arm_scmi/bus.c +++ b/drivers/firmware/arm_scmi/bus.c @@ -14,7 +14,6 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/device.h> -#include <linux/of.h> #include "common.h" @@ -436,7 +435,7 @@ struct scmi_device *scmi_device_create(struct device_node *np, /* Nothing to do. */ if (!phead) { mutex_unlock(&scmi_requested_devices_mtx); - return scmi_dev; + return NULL; } /* Walk the list of requested devices for protocol and create them */ diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index d21c7eafd641..dbc474ff62b7 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -2221,8 +2221,8 @@ static int __scmi_xfer_info_init(struct scmi_info *sinfo, hash_init(info->pending_xfers); /* Allocate a bitmask sized to hold MSG_TOKEN_MAX tokens */ - info->xfer_alloc_table = devm_kcalloc(dev, BITS_TO_LONGS(MSG_TOKEN_MAX), - sizeof(long), GFP_KERNEL); + info->xfer_alloc_table = devm_bitmap_zalloc(dev, MSG_TOKEN_MAX, + GFP_KERNEL); if (!info->xfer_alloc_table) return -ENOMEM; @@ -2657,6 +2657,7 @@ static int scmi_probe(struct platform_device *pdev) struct scmi_handle *handle; const struct scmi_desc *desc; struct scmi_info *info; + bool coex = IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT_COEX); struct device *dev = &pdev->dev; struct device_node *child, *np = dev->of_node; @@ -2731,16 +2732,13 @@ static int scmi_probe(struct platform_device *pdev) dev_warn(dev, "Failed to setup SCMI debugfs.\n"); if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT)) { - bool coex = - IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT_COEX); - ret = scmi_debugfs_raw_mode_setup(info); if (!coex) { if (ret) goto clear_dev_req_notifier; - /* Bail out anyway when coex enabled */ - return ret; + /* Bail out anyway when coex disabled. */ + return 0; } /* Coex enabled, carry on in any case. */ @@ -2764,6 +2762,8 @@ static int scmi_probe(struct platform_device *pdev) ret = scmi_protocol_acquire(handle, SCMI_PROTOCOL_BASE); if (ret) { dev_err(dev, "unable to communicate with SCMI\n"); + if (coex) + return 0; goto notification_exit; } diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c index 0d9c9538b7f4..112c285deb97 100644 --- a/drivers/firmware/arm_scmi/mailbox.c +++ b/drivers/firmware/arm_scmi/mailbox.c @@ -52,6 +52,39 @@ static bool mailbox_chan_available(struct device_node *of_node, int idx) "#mbox-cells", idx, NULL); } +static int mailbox_chan_validate(struct device *cdev) +{ + int num_mb, num_sh, ret = 0; + struct device_node *np = cdev->of_node; + + num_mb = of_count_phandle_with_args(np, "mboxes", "#mbox-cells"); + num_sh = of_count_phandle_with_args(np, "shmem", NULL); + /* Bail out if mboxes and shmem descriptors are inconsistent */ + if (num_mb <= 0 || num_sh > 2 || num_mb != num_sh) { + dev_warn(cdev, "Invalid channel descriptor for '%s'\n", + of_node_full_name(np)); + return -EINVAL; + } + + if (num_sh > 1) { + struct device_node *np_tx, *np_rx; + + np_tx = of_parse_phandle(np, "shmem", 0); + np_rx = of_parse_phandle(np, "shmem", 1); + /* SCMI Tx and Rx shared mem areas have to be distinct */ + if (!np_tx || !np_rx || np_tx == np_rx) { + dev_warn(cdev, "Invalid shmem descriptor for '%s'\n", + of_node_full_name(np)); + ret = -EINVAL; + } + + of_node_put(np_tx); + of_node_put(np_rx); + } + + return ret; +} + static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev, bool tx) { @@ -64,6 +97,10 @@ static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev, resource_size_t size; struct resource res; + ret = mailbox_chan_validate(cdev); + if (ret) + return ret; + smbox = devm_kzalloc(dev, sizeof(*smbox), GFP_KERNEL); if (!smbox) return -ENOMEM; diff --git a/drivers/firmware/efi/earlycon.c b/drivers/firmware/efi/earlycon.c index f54e6fdf08e2..f80a9af3d16e 100644 --- a/drivers/firmware/efi/earlycon.c +++ b/drivers/firmware/efi/earlycon.c @@ -215,6 +215,14 @@ efi_earlycon_write(struct console *con, const char *str, unsigned int num) } } +static bool __initdata fb_probed; + +void __init efi_earlycon_reprobe(void) +{ + if (fb_probed) + setup_earlycon("efifb"); +} + static int __init efi_earlycon_setup(struct earlycon_device *device, const char *opt) { @@ -222,15 +230,17 @@ static int __init efi_earlycon_setup(struct earlycon_device *device, u16 xres, yres; u32 i; - if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) + fb_wb = opt && !strcmp(opt, "ram"); + + if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) { + fb_probed = true; return -ENODEV; + } fb_base = screen_info.lfb_base; if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) fb_base |= (u64)screen_info.ext_lfb_base << 32; - fb_wb = opt && !strcmp(opt, "ram"); - si = &screen_info; xres = si->lfb_width; yres = si->lfb_height; diff --git a/drivers/firmware/efi/efi-init.c b/drivers/firmware/efi/efi-init.c index 2c16080e1f71..ef0820f1a924 100644 --- a/drivers/firmware/efi/efi-init.c +++ b/drivers/firmware/efi/efi-init.c @@ -72,6 +72,9 @@ static void __init init_screen_info(void) if (memblock_is_map_memory(screen_info.lfb_base)) memblock_mark_nomap(screen_info.lfb_base, screen_info.lfb_size); + + if (IS_ENABLED(CONFIG_EFI_EARLYCON)) + efi_earlycon_reprobe(); } } diff --git a/drivers/firmware/efi/libstub/Makefile.zboot b/drivers/firmware/efi/libstub/Makefile.zboot index 43e9a4cab9f5..ccdd6a130d98 100644 --- a/drivers/firmware/efi/libstub/Makefile.zboot +++ b/drivers/firmware/efi/libstub/Makefile.zboot @@ -44,4 +44,4 @@ OBJCOPYFLAGS_vmlinuz.efi := -O binary $(obj)/vmlinuz.efi: $(obj)/vmlinuz.efi.elf FORCE $(call if_changed,objcopy) -targets += zboot-header.o vmlinuz.o vmlinuz.efi.elf vmlinuz.efi +targets += zboot-header.o vmlinuz vmlinuz.o vmlinuz.efi.elf vmlinuz.efi diff --git a/drivers/firmware/efi/libstub/arm64-stub.c b/drivers/firmware/efi/libstub/arm64-stub.c index d4a6b12a8741..770b8ecb7398 100644 --- a/drivers/firmware/efi/libstub/arm64-stub.c +++ b/drivers/firmware/efi/libstub/arm64-stub.c @@ -85,8 +85,10 @@ efi_status_t handle_kernel_image(unsigned long *image_addr, } } - if (image->image_base != _text) + if (image->image_base != _text) { efi_err("FIRMWARE BUG: efi_loaded_image_t::image_base has bogus value\n"); + image->image_base = _text; + } if (!IS_ALIGNED((u64)_text, SEGMENT_ALIGN)) efi_err("FIRMWARE BUG: kernel image not aligned on %dk boundary\n", @@ -139,6 +141,7 @@ efi_status_t handle_kernel_image(unsigned long *image_addr, *image_addr = *reserve_addr; memcpy((void *)*image_addr, _text, kernel_size); caches_clean_inval_pou(*image_addr, *image_addr + kernel_codesize); + efi_remap_image(*image_addr, *reserve_size, kernel_codesize); return EFI_SUCCESS; } diff --git a/drivers/firmware/efi/libstub/arm64.c b/drivers/firmware/efi/libstub/arm64.c index 399770266372..8aad8c49d43f 100644 --- a/drivers/firmware/efi/libstub/arm64.c +++ b/drivers/firmware/efi/libstub/arm64.c @@ -16,20 +16,43 @@ static bool system_needs_vamap(void) { - const u8 *type1_family = efi_get_smbios_string(1, family); + const struct efi_smbios_type4_record *record; + const u32 __aligned(1) *socid; + const u8 *version; /* * Ampere eMAG, Altra, and Altra Max machines crash in SetTime() if - * SetVirtualAddressMap() has not been called prior. + * SetVirtualAddressMap() has not been called prior. Most Altra systems + * can be identified by the SMCCC soc ID, which is conveniently exposed + * via the type 4 SMBIOS records. Otherwise, test the processor version + * field. eMAG systems all appear to have the processor version field + * set to "eMAG". */ - if (!type1_family || ( - strcmp(type1_family, "eMAG") && - strcmp(type1_family, "Altra") && - strcmp(type1_family, "Altra Max"))) + record = (struct efi_smbios_type4_record *)efi_get_smbios_record(4); + if (!record) return false; - efi_warn("Working around broken SetVirtualAddressMap()\n"); - return true; + socid = (u32 *)record->processor_id; + switch (*socid & 0xffff000f) { + static char const altra[] = "Ampere(TM) Altra(TM) Processor"; + static char const emag[] = "eMAG"; + + default: + version = efi_get_smbios_string(&record->header, 4, + processor_version); + if (!version || (strncmp(version, altra, sizeof(altra) - 1) && + strncmp(version, emag, sizeof(emag) - 1))) + break; + + fallthrough; + + case 0x0a160001: // Altra + case 0x0a160002: // Altra Max + efi_warn("Working around broken SetVirtualAddressMap()\n"); + return true; + } + + return false; } efi_status_t check_platform_features(void) diff --git a/drivers/firmware/efi/libstub/efi-stub-entry.c b/drivers/firmware/efi/libstub/efi-stub-entry.c index 5245c4f031c0..cc4dcaea67fa 100644 --- a/drivers/firmware/efi/libstub/efi-stub-entry.c +++ b/drivers/firmware/efi/libstub/efi-stub-entry.c @@ -5,6 +5,15 @@ #include "efistub.h" +static unsigned long screen_info_offset; + +struct screen_info *alloc_screen_info(void) +{ + if (IS_ENABLED(CONFIG_ARM)) + return __alloc_screen_info(); + return (void *)&screen_info + screen_info_offset; +} + /* * EFI entry point for the generic EFI stub used by ARM, arm64, RISC-V and * LoongArch. This is the entrypoint that is described in the PE/COFF header @@ -56,6 +65,8 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, return status; } + screen_info_offset = image_addr - (unsigned long)image->image_base; + status = efi_stub_common(handle, image, image_addr, cmdline_ptr); efi_free(image_size, image_addr); diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c index 2955c1ac6a36..f9c1e8a2bd1d 100644 --- a/drivers/firmware/efi/libstub/efi-stub.c +++ b/drivers/firmware/efi/libstub/efi-stub.c @@ -47,11 +47,6 @@ static u64 virtmap_base = EFI_RT_VIRTUAL_BASE; static bool flat_va_mapping = (EFI_RT_VIRTUAL_OFFSET != 0); -struct screen_info * __weak alloc_screen_info(void) -{ - return &screen_info; -} - void __weak free_screen_info(struct screen_info *si) { } diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index 6bd3bb86d967..148013bcb5f8 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -1062,6 +1062,7 @@ efi_enable_reset_attack_mitigation(void) { } void efi_retrieve_tpm2_eventlog(void); struct screen_info *alloc_screen_info(void); +struct screen_info *__alloc_screen_info(void); void free_screen_info(struct screen_info *si); void efi_cache_sync_image(unsigned long image_base, @@ -1074,6 +1075,8 @@ struct efi_smbios_record { u16 handle; }; +const struct efi_smbios_record *efi_get_smbios_record(u8 type); + struct efi_smbios_type1_record { struct efi_smbios_record header; @@ -1087,14 +1090,46 @@ struct efi_smbios_type1_record { u8 family; }; -#define efi_get_smbios_string(__type, __name) ({ \ - int size = sizeof(struct efi_smbios_type ## __type ## _record); \ +struct efi_smbios_type4_record { + struct efi_smbios_record header; + + u8 socket; + u8 processor_type; + u8 processor_family; + u8 processor_manufacturer; + u8 processor_id[8]; + u8 processor_version; + u8 voltage; + u16 external_clock; + u16 max_speed; + u16 current_speed; + u8 status; + u8 processor_upgrade; + u16 l1_cache_handle; + u16 l2_cache_handle; + u16 l3_cache_handle; + u8 serial_number; + u8 asset_tag; + u8 part_number; + u8 core_count; + u8 enabled_core_count; + u8 thread_count; + u16 processor_characteristics; + u16 processor_family2; + u16 core_count2; + u16 enabled_core_count2; + u16 thread_count2; + u16 thread_enabled; +}; + +#define efi_get_smbios_string(__record, __type, __name) ({ \ int off = offsetof(struct efi_smbios_type ## __type ## _record, \ __name); \ - __efi_get_smbios_string(__type, off, size); \ + __efi_get_smbios_string((__record), __type, off); \ }) -const u8 *__efi_get_smbios_string(u8 type, int offset, int recsize); +const u8 *__efi_get_smbios_string(const struct efi_smbios_record *record, + u8 type, int offset); void efi_remap_image(unsigned long image_base, unsigned alloc_size, unsigned long code_size); diff --git a/drivers/firmware/efi/libstub/randomalloc.c b/drivers/firmware/efi/libstub/randomalloc.c index 1692d19ae80f..32c7a54923b4 100644 --- a/drivers/firmware/efi/libstub/randomalloc.c +++ b/drivers/firmware/efi/libstub/randomalloc.c @@ -101,6 +101,7 @@ efi_status_t efi_random_alloc(unsigned long size, * to calculate the randomly chosen address, and allocate it directly * using EFI_ALLOCATE_ADDRESS. */ + status = EFI_OUT_OF_RESOURCES; for (map_offset = 0; map_offset < map->map_size; map_offset += map->desc_size) { efi_memory_desc_t *md = (void *)map->map + map_offset; efi_physical_addr_t target; diff --git a/drivers/firmware/efi/libstub/screen_info.c b/drivers/firmware/efi/libstub/screen_info.c index 8e76a8b384ba..4be1c4d1f922 100644 --- a/drivers/firmware/efi/libstub/screen_info.c +++ b/drivers/firmware/efi/libstub/screen_info.c @@ -15,18 +15,11 @@ * early, but it only works if the EFI stub is part of the core kernel image * itself. The zboot decompressor can only use the configuration table * approach. - * - * In order to support both methods from the same build of the EFI stub - * library, provide this dummy global definition of struct screen_info. If it - * is required to satisfy a link dependency, it means we need to override the - * __weak alloc and free methods with the ones below, and those will be pulled - * in as well. */ -struct screen_info screen_info; static efi_guid_t screen_info_guid = LINUX_EFI_SCREEN_INFO_TABLE_GUID; -struct screen_info *alloc_screen_info(void) +struct screen_info *__alloc_screen_info(void) { struct screen_info *si; efi_status_t status; diff --git a/drivers/firmware/efi/libstub/smbios.c b/drivers/firmware/efi/libstub/smbios.c index 460418b7f5f5..c217de2cc8d5 100644 --- a/drivers/firmware/efi/libstub/smbios.c +++ b/drivers/firmware/efi/libstub/smbios.c @@ -22,21 +22,30 @@ struct efi_smbios_protocol { u8 minor_version; }; -const u8 *__efi_get_smbios_string(u8 type, int offset, int recsize) +const struct efi_smbios_record *efi_get_smbios_record(u8 type) { struct efi_smbios_record *record; efi_smbios_protocol_t *smbios; efi_status_t status; u16 handle = 0xfffe; - const u8 *strtable; status = efi_bs_call(locate_protocol, &EFI_SMBIOS_PROTOCOL_GUID, NULL, (void **)&smbios) ?: efi_call_proto(smbios, get_next, &handle, &type, &record, NULL); if (status != EFI_SUCCESS) return NULL; + return record; +} + +const u8 *__efi_get_smbios_string(const struct efi_smbios_record *record, + u8 type, int offset) +{ + const u8 *strtable; + + if (!record) + return NULL; - strtable = (u8 *)record + recsize; + strtable = (u8 *)record + record->length; for (int i = 1; i < ((u8 *)record)[offset]; i++) { int len = strlen(strtable); diff --git a/drivers/firmware/efi/libstub/zboot-header.S b/drivers/firmware/efi/libstub/zboot-header.S index ec4525d40e0c..445cb646eaaa 100644 --- a/drivers/firmware/efi/libstub/zboot-header.S +++ b/drivers/firmware/efi/libstub/zboot-header.S @@ -63,7 +63,7 @@ __efistub_efi_zboot_header: .long .Lefi_header_end - .Ldoshdr .long 0 .short IMAGE_SUBSYSTEM_EFI_APPLICATION - .short 0 + .short IMAGE_DLL_CHARACTERISTICS_NX_COMPAT #ifdef CONFIG_64BIT .quad 0, 0, 0, 0 #else diff --git a/drivers/firmware/efi/libstub/zboot.c b/drivers/firmware/efi/libstub/zboot.c index ba234e062a1a..6105e5e2eda4 100644 --- a/drivers/firmware/efi/libstub/zboot.c +++ b/drivers/firmware/efi/libstub/zboot.c @@ -57,6 +57,11 @@ void __weak efi_cache_sync_image(unsigned long image_base, // executable code loaded into memory to be safe for execution. } +struct screen_info *alloc_screen_info(void) +{ + return __alloc_screen_info(); +} + asmlinkage efi_status_t __efiapi efi_zboot_entry(efi_handle_t handle, efi_system_table_t *systab) { diff --git a/drivers/firmware/efi/sysfb_efi.c b/drivers/firmware/efi/sysfb_efi.c index f06fdacc9bc8..456d0e5eaf78 100644 --- a/drivers/firmware/efi/sysfb_efi.c +++ b/drivers/firmware/efi/sysfb_efi.c @@ -272,6 +272,14 @@ static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = { "IdeaPad Duet 3 10IGL5"), }, }, + { + /* Lenovo Yoga Book X91F / X91L */ + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), + /* Non exact match to match F + L versions */ + DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"), + }, + }, {}, }; @@ -341,7 +349,7 @@ static const struct fwnode_operations efifb_fwnode_ops = { #ifdef CONFIG_EFI static struct fwnode_handle efifb_fwnode; -__init void sysfb_apply_efi_quirks(struct platform_device *pd) +__init void sysfb_apply_efi_quirks(void) { if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || !(screen_info.capabilities & VIDEO_CAPABILITY_SKIP_QUIRKS)) @@ -355,7 +363,10 @@ __init void sysfb_apply_efi_quirks(struct platform_device *pd) screen_info.lfb_height = temp; screen_info.lfb_linelength = 4 * screen_info.lfb_width; } +} +__init void sysfb_set_efifb_fwnode(struct platform_device *pd) +{ if (screen_info.orig_video_isVGA == VIDEO_TYPE_EFI && IS_ENABLED(CONFIG_PCI)) { fwnode_init(&efifb_fwnode, &efifb_fwnode_ops); pd->dev.fwnode = &efifb_fwnode; diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 468d4d5ab550..b1e11f85b805 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -1479,7 +1479,7 @@ static int qcom_scm_probe(struct platform_device *pdev) init_completion(&__scm->waitq_comp); - irq = platform_get_irq(pdev, 0); + irq = platform_get_irq_optional(pdev, 0); if (irq < 0) { if (irq != -ENXIO) return irq; diff --git a/drivers/firmware/sysfb.c b/drivers/firmware/sysfb.c index 3fd3563d962b..3c197db42c9d 100644 --- a/drivers/firmware/sysfb.c +++ b/drivers/firmware/sysfb.c @@ -81,6 +81,8 @@ static __init int sysfb_init(void) if (disabled) goto unlock_mutex; + sysfb_apply_efi_quirks(); + /* try to create a simple-framebuffer device */ compatible = sysfb_parse_mode(si, &mode); if (compatible) { @@ -107,7 +109,7 @@ static __init int sysfb_init(void) goto unlock_mutex; } - sysfb_apply_efi_quirks(pd); + sysfb_set_efifb_fwnode(pd); ret = platform_device_add_data(pd, si, sizeof(*si)); if (ret) diff --git a/drivers/firmware/sysfb_simplefb.c b/drivers/firmware/sysfb_simplefb.c index ce9c007ed66f..82c64cb9f531 100644 --- a/drivers/firmware/sysfb_simplefb.c +++ b/drivers/firmware/sysfb_simplefb.c @@ -141,7 +141,7 @@ __init struct platform_device *sysfb_create_simplefb(const struct screen_info *s if (!pd) return ERR_PTR(-ENOMEM); - sysfb_apply_efi_quirks(pd); + sysfb_set_efifb_fwnode(pd); ret = platform_device_add_resources(pd, &res, 1); if (ret) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index acd83d29c866..ce86a1850305 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -206,7 +206,7 @@ static int do_feature_check_call(const u32 api_id) } /* Add new entry if not present */ - feature_data = kmalloc(sizeof(*feature_data), GFP_KERNEL); + feature_data = kmalloc(sizeof(*feature_data), GFP_ATOMIC); if (!feature_data) return -ENOMEM; |