mirror of
https://github.com/Fishwaldo/build.git
synced 2025-03-28 17:51:40 +00:00
enable configfs support and overlays
This commit is contained in:
Martin Ayotte
parent
58f7ebe38f
commit
b64d1bd787
2 changed files with 451 additions and 0 deletions
125
patch/kernel/sunxi-dev-h6/add-overlay-compilation-support.patch
Normal file
125
patch/kernel/sunxi-dev-h6/add-overlay-compilation-support.patch
Normal file
|
|
@ -0,0 +1,125 @@
|
|||
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
|
||||
index 65f4e2a4..9eb2043c 100644
|
||||
--- a/arch/arm/Makefile
|
||||
+++ b/arch/arm/Makefile
|
||||
@@ -339,6 +339,12 @@ $(INSTALL_TARGETS):
|
||||
%.dtb: | scripts
|
||||
$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
|
||||
|
||||
+%.dtbo: | scripts
|
||||
+ $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
|
||||
+
|
||||
+%.scr: | scripts
|
||||
+ $(Q)$(MAKE) $(build)=$(boot)/dts ARCH=$(ARCH) $(boot)/dts/$@
|
||||
+
|
||||
PHONY += dtbs dtbs_install
|
||||
|
||||
dtbs: prepare scripts
|
||||
diff --git a/arch/arm/boot/.gitignore b/arch/arm/boot/.gitignore
|
||||
index 3c79f859..4e5c1d59 100644
|
||||
--- a/arch/arm/boot/.gitignore
|
||||
+++ b/arch/arm/boot/.gitignore
|
||||
@@ -3,3 +3,5 @@ zImage
|
||||
xipImage
|
||||
bootpImage
|
||||
uImage
|
||||
+*.dtb*
|
||||
+*.scr
|
||||
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
|
||||
index f839ecd9..9788f16d 100644
|
||||
--- a/arch/arm64/Makefile
|
||||
+++ b/arch/arm64/Makefile
|
||||
@@ -121,6 +121,12 @@ zinstall install:
|
||||
%.dtb: scripts
|
||||
$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
|
||||
|
||||
+%.dtbo: | scripts
|
||||
+ $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
|
||||
+
|
||||
+%.scr: | scripts
|
||||
+ $(Q)$(MAKE) $(build)=$(boot)/dts ARCH=$(ARCH) $(boot)/dts/$@
|
||||
+
|
||||
PHONY += dtbs dtbs_install
|
||||
|
||||
dtbs: prepare scripts
|
||||
diff --git a/arch/arm64/boot/dts/.gitignore b/arch/arm64/boot/dts/.gitignore
|
||||
index b60ed208..4bec63b6 100644
|
||||
--- a/arch/arm64/boot/dts/.gitignore
|
||||
+++ b/arch/arm64/boot/dts/.gitignore
|
||||
@@ -0,0 +1,2 @@
|
||||
+*.dtb*
|
||||
+*.scr
|
||||
diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
|
||||
index 34614a48..8a8313d6 100644
|
||||
--- a/scripts/Makefile.dtbinst
|
||||
+++ b/scripts/Makefile.dtbinst
|
||||
@@ -20,6 +20,9 @@ include scripts/Kbuild.include
|
||||
include $(src)/Makefile
|
||||
|
||||
dtbinst-files := $(sort $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS), $(dtb-)))
|
||||
+dtboinst-files := $(dtbo-y)
|
||||
+script-files := $(scr-y)
|
||||
+readme-files := $(dtbotxt-y)
|
||||
dtbinst-dirs := $(subdir-y) $(subdir-m)
|
||||
|
||||
# Helper targets for Installing DTBs into the boot directory
|
||||
@@ -31,10 +34,19 @@ install-dir = $(patsubst $(dtbinst_root)%,$(INSTALL_DTBS_PATH)%,$(obj))
|
||||
$(dtbinst-files): %.dtb: $(obj)/%.dtb
|
||||
$(call cmd,dtb_install,$(install-dir))
|
||||
|
||||
+$(dtboinst-files): %.dtbo: $(obj)/%.dtbo
|
||||
+ $(call cmd,dtb_install,$(install-dir))
|
||||
+
|
||||
+$(script-files): %.scr: $(obj)/%.scr
|
||||
+ $(call cmd,dtb_install,$(install-dir))
|
||||
+
|
||||
+$(readme-files): %: $(src)/%
|
||||
+ $(call cmd,dtb_install,$(install-dir))
|
||||
+
|
||||
$(dtbinst-dirs):
|
||||
$(Q)$(MAKE) $(dtbinst)=$(obj)/$@
|
||||
|
||||
-PHONY += $(dtbinst-files) $(dtbinst-dirs)
|
||||
-__dtbs_install: $(dtbinst-files) $(dtbinst-dirs)
|
||||
+PHONY += $(dtbinst-files) $(dtboinst-files) $(script-files) $(readme-files) $(dtbinst-dirs)
|
||||
+__dtbs_install: $(dtbinst-files) $(dtboinst-files) $(script-files) $(readme-files) $(dtbinst-dirs)
|
||||
|
||||
.PHONY: $(PHONY)
|
||||
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
|
||||
index 58c05e5d..2b95dda9 100644
|
||||
--- a/scripts/Makefile.lib
|
||||
+++ b/scripts/Makefile.lib
|
||||
@@ -278,6 +278,9 @@ cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
|
||||
# ---------------------------------------------------------------------------
|
||||
DTC ?= $(objtree)/scripts/dtc/dtc
|
||||
|
||||
+# Overlay support
|
||||
+DTC_FLAGS += -@ -Wno-unit_address_format -Wno-simple_bus_reg
|
||||
+
|
||||
# Disable noisy checks by default
|
||||
ifeq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),)
|
||||
DTC_FLAGS += -Wno-unit_address_vs_reg \
|
||||
@@ -324,6 +327,23 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
|
||||
$(obj)/%.dtb: $(src)/%.dts FORCE
|
||||
$(call if_changed_dep,dtc)
|
||||
|
||||
+quiet_cmd_dtco = DTCO $@
|
||||
+cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
|
||||
+ $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
|
||||
+ $(DTC) -O dtb -o $@ -b 0 \
|
||||
+ -i $(dir $<) $(DTC_FLAGS) \
|
||||
+ -d $(depfile).dtc.tmp $(dtc-tmp) ; \
|
||||
+ cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
|
||||
+
|
||||
+$(obj)/%.dtbo: $(src)/%.dts FORCE
|
||||
+ $(call if_changed_dep,dtco)
|
||||
+
|
||||
+quiet_cmd_scr = MKIMAGE $@
|
||||
+cmd_scr = mkimage -C none -A $(ARCH) -T script -d $< $@
|
||||
+
|
||||
+$(obj)/%.scr: $(src)/%.scr-cmd FORCE
|
||||
+ $(call if_changed,scr)
|
||||
+
|
||||
dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
|
||||
|
||||
# Bzip2
|
||||
326
patch/kernel/sunxi-dev-h6/add_configfs_overlay_for_v4.18.x.patch
Normal file
326
patch/kernel/sunxi-dev-h6/add_configfs_overlay_for_v4.18.x.patch
Normal file
|
|
@ -0,0 +1,326 @@
|
|||
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
|
||||
index bc07ad3..e9da9cf 100644
|
||||
--- a/drivers/of/Kconfig
|
||||
+++ b/drivers/of/Kconfig
|
||||
@@ -113,6 +113,13 @@ config OF_OVERLAY
|
||||
While this option is selected automatically when needed, you can
|
||||
enable it manually to improve device tree unit test coverage.
|
||||
|
||||
+config OF_CONFIGFS
|
||||
+ bool "Device Tree Overlay ConfigFS interface"
|
||||
+ select CONFIGFS_FS
|
||||
+ depends on OF_OVERLAY
|
||||
+ help
|
||||
+ Enable a simple user-space driven DT overlay interface.
|
||||
+
|
||||
config OF_NUMA
|
||||
bool
|
||||
|
||||
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
|
||||
index d7efd9d..a06cc35 100644
|
||||
--- a/drivers/of/Makefile
|
||||
+++ b/drivers/of/Makefile
|
||||
@@ -13,6 +13,7 @@ obj-$(CONFIG_OF_PCI_IRQ) += of_pci_irq.o
|
||||
obj-$(CONFIG_OF_RESERVED_MEM) += of_reserved_mem.o
|
||||
obj-$(CONFIG_OF_RESOLVE) += resolver.o
|
||||
obj-$(CONFIG_OF_OVERLAY) += overlay.o
|
||||
+obj-$(CONFIG_OF_CONFIGFS) += configfs.o
|
||||
obj-$(CONFIG_OF_NUMA) += of_numa.o
|
||||
|
||||
obj-$(CONFIG_OF_UNITTEST) += unittest-data/
|
||||
diff --git a/drivers/of/configfs.c b/drivers/of/configfs.c
|
||||
new file mode 100644
|
||||
index 0000000..68f889d
|
||||
--- /dev/null
|
||||
+++ b/drivers/of/configfs.c
|
||||
@@ -0,0 +1,277 @@
|
||||
+/*
|
||||
+ * Configfs entries for device-tree
|
||||
+ *
|
||||
+ * Copyright (C) 2013 - Pantelis Antoniou <panto@antoniou-consulting.com>
|
||||
+ *
|
||||
+ * This program is free software; you can redistribute it and/or
|
||||
+ * modify it under the terms of the GNU General Public License
|
||||
+ * as published by the Free Software Foundation; either version
|
||||
+ * 2 of the License, or (at your option) any later version.
|
||||
+ */
|
||||
+#include <linux/ctype.h>
|
||||
+#include <linux/cpu.h>
|
||||
+#include <linux/module.h>
|
||||
+#include <linux/of.h>
|
||||
+#include <linux/of_fdt.h>
|
||||
+#include <linux/spinlock.h>
|
||||
+#include <linux/slab.h>
|
||||
+#include <linux/proc_fs.h>
|
||||
+#include <linux/configfs.h>
|
||||
+#include <linux/types.h>
|
||||
+#include <linux/stat.h>
|
||||
+#include <linux/limits.h>
|
||||
+#include <linux/file.h>
|
||||
+#include <linux/vmalloc.h>
|
||||
+#include <linux/firmware.h>
|
||||
+#include <linux/sizes.h>
|
||||
+
|
||||
+#include "of_private.h"
|
||||
+
|
||||
+struct cfs_overlay_item {
|
||||
+ struct config_item item;
|
||||
+
|
||||
+ char path[PATH_MAX];
|
||||
+
|
||||
+ const struct firmware *fw;
|
||||
+ struct device_node *overlay;
|
||||
+ int ov_id;
|
||||
+
|
||||
+ void *dtbo;
|
||||
+ int dtbo_size;
|
||||
+};
|
||||
+
|
||||
+static inline struct cfs_overlay_item *to_cfs_overlay_item(
|
||||
+ struct config_item *item)
|
||||
+{
|
||||
+ return item ? container_of(item, struct cfs_overlay_item, item) : NULL;
|
||||
+}
|
||||
+
|
||||
+static ssize_t cfs_overlay_item_path_show(struct config_item *item,
|
||||
+ char *page)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
|
||||
+ return sprintf(page, "%s\n", overlay->path);
|
||||
+}
|
||||
+
|
||||
+static ssize_t cfs_overlay_item_path_store(struct config_item *item,
|
||||
+ const char *page, size_t count)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
|
||||
+ const char *p = page;
|
||||
+ char *s;
|
||||
+ int err;
|
||||
+
|
||||
+ /* if it's set do not allow changes */
|
||||
+ if (overlay->path[0] != '\0' || overlay->dtbo_size > 0)
|
||||
+ return -EPERM;
|
||||
+
|
||||
+ /* copy to path buffer (and make sure it's always zero terminated */
|
||||
+ count = snprintf(overlay->path, sizeof(overlay->path) - 1, "%s", p);
|
||||
+ overlay->path[sizeof(overlay->path) - 1] = '\0';
|
||||
+
|
||||
+ /* strip trailing newlines */
|
||||
+ s = overlay->path + strlen(overlay->path);
|
||||
+ while (s > overlay->path && *--s == '\n')
|
||||
+ *s = '\0';
|
||||
+
|
||||
+ pr_debug("%s: path is '%s'\n", __func__, overlay->path);
|
||||
+
|
||||
+ err = request_firmware(&overlay->fw, overlay->path, NULL);
|
||||
+ if (err != 0)
|
||||
+ goto out_err;
|
||||
+
|
||||
+ err = of_overlay_fdt_apply((void *)overlay->fw->data,
|
||||
+ (u32)overlay->fw->size, &overlay->ov_id);
|
||||
+ if (err != 0)
|
||||
+ goto out_err;
|
||||
+
|
||||
+ return count;
|
||||
+
|
||||
+out_err:
|
||||
+
|
||||
+ release_firmware(overlay->fw);
|
||||
+ overlay->fw = NULL;
|
||||
+
|
||||
+ overlay->path[0] = '\0';
|
||||
+ return err;
|
||||
+}
|
||||
+
|
||||
+static ssize_t cfs_overlay_item_status_show(struct config_item *item,
|
||||
+ char *page)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
|
||||
+
|
||||
+ return sprintf(page, "%s\n",
|
||||
+ overlay->ov_id > 0 ? "applied" : "unapplied");
|
||||
+}
|
||||
+
|
||||
+CONFIGFS_ATTR(cfs_overlay_item_, path);
|
||||
+CONFIGFS_ATTR_RO(cfs_overlay_item_, status);
|
||||
+
|
||||
+static struct configfs_attribute *cfs_overlay_attrs[] = {
|
||||
+ &cfs_overlay_item_attr_path,
|
||||
+ &cfs_overlay_item_attr_status,
|
||||
+ NULL,
|
||||
+};
|
||||
+
|
||||
+ssize_t cfs_overlay_item_dtbo_read(struct config_item *item,
|
||||
+ void *buf, size_t max_count)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
|
||||
+
|
||||
+ pr_debug("%s: buf=%p max_count=%zu\n", __func__,
|
||||
+ buf, max_count);
|
||||
+
|
||||
+ if (overlay->dtbo == NULL)
|
||||
+ return 0;
|
||||
+
|
||||
+ /* copy if buffer provided */
|
||||
+ if (buf != NULL) {
|
||||
+ /* the buffer must be large enough */
|
||||
+ if (overlay->dtbo_size > max_count)
|
||||
+ return -ENOSPC;
|
||||
+
|
||||
+ memcpy(buf, overlay->dtbo, overlay->dtbo_size);
|
||||
+ }
|
||||
+
|
||||
+ return overlay->dtbo_size;
|
||||
+}
|
||||
+
|
||||
+ssize_t cfs_overlay_item_dtbo_write(struct config_item *item,
|
||||
+ const void *buf, size_t count)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
|
||||
+ int err;
|
||||
+
|
||||
+ /* if it's set do not allow changes */
|
||||
+ if (overlay->path[0] != '\0' || overlay->dtbo_size > 0)
|
||||
+ return -EPERM;
|
||||
+
|
||||
+ /* copy the contents */
|
||||
+ overlay->dtbo = kmemdup(buf, count, GFP_KERNEL);
|
||||
+ if (overlay->dtbo == NULL)
|
||||
+ return -ENOMEM;
|
||||
+
|
||||
+ overlay->dtbo_size = count;
|
||||
+
|
||||
+ err = of_overlay_fdt_apply(overlay->dtbo, overlay->dtbo_size,
|
||||
+ &overlay->ov_id);
|
||||
+ if (err != 0)
|
||||
+ goto out_err;
|
||||
+
|
||||
+ return count;
|
||||
+
|
||||
+out_err:
|
||||
+ kfree(overlay->dtbo);
|
||||
+ overlay->dtbo = NULL;
|
||||
+ overlay->dtbo_size = 0;
|
||||
+ overlay->ov_id = 0;
|
||||
+
|
||||
+ return err;
|
||||
+}
|
||||
+
|
||||
+CONFIGFS_BIN_ATTR(cfs_overlay_item_, dtbo, NULL, SZ_1M);
|
||||
+
|
||||
+static struct configfs_bin_attribute *cfs_overlay_bin_attrs[] = {
|
||||
+ &cfs_overlay_item_attr_dtbo,
|
||||
+ NULL,
|
||||
+};
|
||||
+
|
||||
+static void cfs_overlay_release(struct config_item *item)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
|
||||
+
|
||||
+ if (overlay->ov_id > 0)
|
||||
+ of_overlay_remove(&overlay->ov_id);
|
||||
+ if (overlay->fw)
|
||||
+ release_firmware(overlay->fw);
|
||||
+ /* kfree with NULL is safe */
|
||||
+ kfree(overlay->dtbo);
|
||||
+ kfree(overlay);
|
||||
+}
|
||||
+
|
||||
+static struct configfs_item_operations cfs_overlay_item_ops = {
|
||||
+ .release = cfs_overlay_release,
|
||||
+};
|
||||
+
|
||||
+static struct config_item_type cfs_overlay_type = {
|
||||
+ .ct_item_ops = &cfs_overlay_item_ops,
|
||||
+ .ct_attrs = cfs_overlay_attrs,
|
||||
+ .ct_bin_attrs = cfs_overlay_bin_attrs,
|
||||
+ .ct_owner = THIS_MODULE,
|
||||
+};
|
||||
+
|
||||
+static struct config_item *cfs_overlay_group_make_item(
|
||||
+ struct config_group *group, const char *name)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay;
|
||||
+
|
||||
+ overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
|
||||
+ if (!overlay)
|
||||
+ return ERR_PTR(-ENOMEM);
|
||||
+
|
||||
+ config_item_init_type_name(&overlay->item, name, &cfs_overlay_type);
|
||||
+ return &overlay->item;
|
||||
+}
|
||||
+
|
||||
+static void cfs_overlay_group_drop_item(struct config_group *group,
|
||||
+ struct config_item *item)
|
||||
+{
|
||||
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
|
||||
+
|
||||
+ config_item_put(&overlay->item);
|
||||
+}
|
||||
+
|
||||
+static struct configfs_group_operations overlays_ops = {
|
||||
+ .make_item = cfs_overlay_group_make_item,
|
||||
+ .drop_item = cfs_overlay_group_drop_item,
|
||||
+};
|
||||
+
|
||||
+static struct config_item_type overlays_type = {
|
||||
+ .ct_group_ops = &overlays_ops,
|
||||
+ .ct_owner = THIS_MODULE,
|
||||
+};
|
||||
+
|
||||
+static struct configfs_group_operations of_cfs_ops = {
|
||||
+ /* empty - we don't allow anything to be created */
|
||||
+};
|
||||
+
|
||||
+static struct config_item_type of_cfs_type = {
|
||||
+ .ct_group_ops = &of_cfs_ops,
|
||||
+ .ct_owner = THIS_MODULE,
|
||||
+};
|
||||
+
|
||||
+struct config_group of_cfs_overlay_group;
|
||||
+
|
||||
+static struct configfs_subsystem of_cfs_subsys = {
|
||||
+ .su_group = {
|
||||
+ .cg_item = {
|
||||
+ .ci_namebuf = "device-tree",
|
||||
+ .ci_type = &of_cfs_type,
|
||||
+ },
|
||||
+ },
|
||||
+ .su_mutex = __MUTEX_INITIALIZER(of_cfs_subsys.su_mutex),
|
||||
+};
|
||||
+
|
||||
+static int __init of_cfs_init(void)
|
||||
+{
|
||||
+ int ret;
|
||||
+
|
||||
+ pr_info("%s\n", __func__);
|
||||
+
|
||||
+ config_group_init(&of_cfs_subsys.su_group);
|
||||
+ config_group_init_type_name(&of_cfs_overlay_group, "overlays",
|
||||
+ &overlays_type);
|
||||
+ configfs_add_default_group(&of_cfs_overlay_group,
|
||||
+ &of_cfs_subsys.su_group);
|
||||
+
|
||||
+ ret = configfs_register_subsystem(&of_cfs_subsys);
|
||||
+ if (ret != 0) {
|
||||
+ pr_err("%s: failed to register subsys\n", __func__);
|
||||
+ goto out;
|
||||
+ }
|
||||
+ pr_info("%s: OK\n", __func__);
|
||||
+out:
|
||||
+ return ret;
|
||||
+}
|
||||
+late_initcall(of_cfs_init);
|
||||
diff --git a/drivers/of/fdt_address.c b/drivers/of/fdt_address.c
|
||||
index dca8f9b..ec7e167 100644
|
||||
--- a/drivers/of/fdt_address.c
|
||||
+++ b/drivers/of/fdt_address.c
|
||||
@@ -161,7 +161,7 @@ static int __init fdt_translate_one(const void *blob, int parent,
|
||||
* that can be mapped to a cpu physical address). This is not really specified
|
||||
* that way, but this is traditionally the way IBM at least do things
|
||||
*/
|
||||
-static u64 __init fdt_translate_address(const void *blob, int node_offset)
|
||||
+u64 __init fdt_translate_address(const void *blob, int node_offset)
|
||||
{
|
||||
int parent, len;
|
||||
const struct of_bus *bus, *pbus;
|
||||
Loading…
Add table
Reference in a new issue