[PATCH 0/7] bootconfig: Clean up bootconfig

[PATCH 0/7] bootconfig: Clean up bootconfig

[Masami Hiramatsu]

Hi,

Here is a bootconfig cleanup series which includes a previous
xbc_destroy_all() renaming patch. Basically this tries to remove
all dummy patched in tools/bootconfig, except include/linux/bootconfig.

This series can be applied on top of 1-3rd patch of this series.

 https://lore.kernel.org/all/163177338366.682366.5998343833719057348.stgit@devnote2/T/#u


As I added a NOTE in the bootconfig files, those are not intended to
be used from user application, except for tools/bootconfig. Because
tools/bootconfig runs parser tests, it must use the same code of
lib/bootconfig.

However, I don't want to keep the dummy headers for that. This series
minimize the differences and consolidate it to the one wrapper header.

I hope this eases the current situation so that the future change will
not (or hard to) break tools/bootconfig build.

Thank you,

---

Masami Hiramatsu (7):
      tools/bootconfig: Run test script when build all
      bootconfig: Rename xbc_destroy_all() to xbc_exit()
      bootconfig: Split parse-tree part from xbc_init
      bootconfig: Remove unused debug function
      tools/bootconfig: Print all error message in stderr
      bootconfig: Replace u16 and u32 with uint16_t and uint32_t
      bootconfig: Cleanup dummy headers in tools/bootconfig


 include/linux/bootconfig.h                  |   27 ++--
 init/main.c                                 |    2 
 lib/bootconfig.c                            |  187 +++++++++++++++------------
 tools/bootconfig/Makefile                   |    4 -
 tools/bootconfig/include/linux/bootconfig.h |   45 ++++++
 tools/bootconfig/include/linux/bug.h        |   12 --
 tools/bootconfig/include/linux/ctype.h      |    7 -
 tools/bootconfig/include/linux/errno.h      |    7 -
 tools/bootconfig/include/linux/kernel.h     |   18 ---
 tools/bootconfig/include/linux/memblock.h   |   11 --
 tools/bootconfig/include/linux/printk.h     |   14 --
 tools/bootconfig/include/linux/string.h     |   32 -----
 tools/bootconfig/main.c                     |   25 ++--
 13 files changed, 181 insertions(+), 210 deletions(-)
 delete mode 100644 tools/bootconfig/include/linux/bug.h
 delete mode 100644 tools/bootconfig/include/linux/ctype.h
 delete mode 100644 tools/bootconfig/include/linux/errno.h
 delete mode 100644 tools/bootconfig/include/linux/kernel.h
 delete mode 100644 tools/bootconfig/include/linux/memblock.h
 delete mode 100644 tools/bootconfig/include/linux/printk.h
 delete mode 100644 tools/bootconfig/include/linux/string.h

-- 
Masami Hiramatsu (Linaro) <mhiramat@kernel.org>

[PATCH 1/7] tools/bootconfig: Run test script when build all

[Masami Hiramatsu]

Run the bootconfig test script when build all target
so that user can notice any issue when build it.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 tools/bootconfig/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bootconfig/Makefile b/tools/bootconfig/Makefile
index da5975775337..f1eec3ccbe18 100644
--- a/tools/bootconfig/Makefile
+++ b/tools/bootconfig/Makefile
@@ -15,7 +15,7 @@ CFLAGS = -Wall -g -I$(CURDIR)/include
 ALL_TARGETS := bootconfig
 ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
 
-all: $(ALL_PROGRAMS)
+all: $(ALL_PROGRAMS) test
 
 $(OUTPUT)bootconfig: main.c $(LIBSRC)
 	$(CC) $(filter %.c,$^) $(CFLAGS) -o $@

[PATCH 2/7] bootconfig: Rename xbc_destroy_all() to xbc_exit()

[Masami Hiramatsu]

Avoid using this noisy name and use more calm one.
This is just a name change. No functional change.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
  Changes in v5:
   - Use _exit suffix instead of _fini.
---
 include/linux/bootconfig.h |    2 +-
 init/main.c                |    2 +-
 lib/bootconfig.c           |    8 ++++----
 tools/bootconfig/main.c    |    2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/linux/bootconfig.h b/include/linux/bootconfig.h
index f955bb7eabbb..7eb7a7f8ade7 100644
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -277,7 +277,7 @@ int __init xbc_init(const char *buf, size_t size, const char **emsg, int *epos);
 int __init xbc_get_info(int *node_size, size_t *data_size);
 
 /* XBC cleanup data structures */
-void __init xbc_destroy_all(void);
+void __init xbc_exit(void);
 
 /* Debug dump functions */
 void __init xbc_debug_dump(void);
diff --git a/init/main.c b/init/main.c
index 747b4fd38a1a..e5464067ca7a 100644
--- a/init/main.c
+++ b/init/main.c
@@ -463,7 +463,7 @@ static void __init setup_boot_config(void)
 
 static void __init exit_boot_config(void)
 {
-	xbc_destroy_all();
+	xbc_exit();
 }
 
 #else	/* !CONFIG_BOOT_CONFIG */
diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index b088fe5c0001..a3ce5a0c3ca4 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -802,13 +802,13 @@ static int __init xbc_verify_tree(void)
 }
 
 /**
- * xbc_destroy_all() - Clean up all parsed bootconfig
+ * xbc_exit() - Clean up all parsed bootconfig
  *
  * This clears all data structures of parsed bootconfig on memory.
  * If you need to reuse xbc_init() with new boot config, you can
  * use this.
  */
-void __init xbc_destroy_all(void)
+void __init xbc_exit(void)
 {
 	memblock_free_ptr(xbc_data, xbc_data_size);
 	xbc_data = NULL;
@@ -869,7 +869,7 @@ int __init xbc_init(const char *data, size_t size, const char **emsg, int *epos)
 	if (!xbc_nodes) {
 		if (emsg)
 			*emsg = "Failed to allocate bootconfig nodes";
-		xbc_destroy_all();
+		xbc_exit();
 		return -ENOMEM;
 	}
 	memset(xbc_nodes, 0, sizeof(struct xbc_node) * XBC_NODE_MAX);
@@ -925,7 +925,7 @@ int __init xbc_init(const char *data, size_t size, const char **emsg, int *epos)
 			*epos = xbc_err_pos;
 		if (emsg)
 			*emsg = xbc_err_msg;
-		xbc_destroy_all();
+		xbc_exit();
 	} else
 		ret = xbc_node_num;
 
diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index 4f2a8d884745..4252c23bd35d 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -397,7 +397,7 @@ static int apply_xbc(const char *path, const char *xbc_path)
 	printf("\tChecksum: %d\n", (unsigned int)csum);
 
 	/* TODO: Check the options by schema */
-	xbc_destroy_all();
+	xbc_exit();
 	free(buf);
 
 	/* Remove old boot config if exists */

[PATCH 3/7] bootconfig: Split parse-tree part from xbc_init

[Masami Hiramatsu]

Split bootconfig data parser to build tree code from
xbc_init(). This is an internal cosmetic change.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 lib/bootconfig.c |   99 +++++++++++++++++++++++++++++-------------------------
 1 file changed, 54 insertions(+), 45 deletions(-)

diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index a3ce5a0c3ca4..b7e5a32b30d3 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -801,6 +801,58 @@ static int __init xbc_verify_tree(void)
 	return 0;
 }
 
+/* Need to setup xbc_data and xbc_nodes before call this. */
+static int __init xbc_parse_tree(void)
+{
+	char *p, *q;
+	int ret, c;
+
+	last_parent = NULL;
+	p = xbc_data;
+	do {
+		q = strpbrk(p, "{}=+;:\n#");
+		if (!q) {
+			p = skip_spaces(p);
+			if (*p != '\0')
+				ret = xbc_parse_error("No delimiter", p);
+			break;
+		}
+
+		c = *q;
+		*q++ = '\0';
+		switch (c) {
+		case ':':
+		case '+':
+			if (*q++ != '=') {
+				ret = xbc_parse_error(c == '+' ?
+						"Wrong '+' operator" :
+						"Wrong ':' operator",
+							q - 2);
+				break;
+			}
+			fallthrough;
+		case '=':
+			ret = xbc_parse_kv(&p, q, c);
+			break;
+		case '{':
+			ret = xbc_open_brace(&p, q);
+			break;
+		case '#':
+			q = skip_comment(q);
+			fallthrough;
+		case ';':
+		case '\n':
+			ret = xbc_parse_key(&p, q);
+			break;
+		case '}':
+			ret = xbc_close_brace(&p, q);
+			break;
+		}
+	} while (!ret);
+
+	return ret;
+}
+
 /**
  * xbc_exit() - Clean up all parsed bootconfig
  *
@@ -836,8 +888,7 @@ void __init xbc_exit(void)
  */
 int __init xbc_init(const char *data, size_t size, const char **emsg, int *epos)
 {
-	char *p, *q;
-	int ret, c;
+	int ret;
 
 	if (epos)
 		*epos = -1;
@@ -874,49 +925,7 @@ int __init xbc_init(const char *data, size_t size, const char **emsg, int *epos)
 	}
 	memset(xbc_nodes, 0, sizeof(struct xbc_node) * XBC_NODE_MAX);
 
-	last_parent = NULL;
-	p = xbc_data;
-	do {
-		q = strpbrk(p, "{}=+;:\n#");
-		if (!q) {
-			p = skip_spaces(p);
-			if (*p != '\0')
-				ret = xbc_parse_error("No delimiter", p);
-			break;
-		}
-
-		c = *q;
-		*q++ = '\0';
-		switch (c) {
-		case ':':
-		case '+':
-			if (*q++ != '=') {
-				ret = xbc_parse_error(c == '+' ?
-						"Wrong '+' operator" :
-						"Wrong ':' operator",
-							q - 2);
-				break;
-			}
-			fallthrough;
-		case '=':
-			ret = xbc_parse_kv(&p, q, c);
-			break;
-		case '{':
-			ret = xbc_open_brace(&p, q);
-			break;
-		case '#':
-			q = skip_comment(q);
-			fallthrough;
-		case ';':
-		case '\n':
-			ret = xbc_parse_key(&p, q);
-			break;
-		case '}':
-			ret = xbc_close_brace(&p, q);
-			break;
-		}
-	} while (!ret);
-
+	ret = xbc_parse_tree();
 	if (!ret)
 		ret = xbc_verify_tree();
 

[PATCH 4/7] bootconfig: Remove unused debug function

[Masami Hiramatsu]

Remove unused xbc_debug_dump() from bootconfig for clean up
the code.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 include/linux/bootconfig.h |    3 ---
 lib/bootconfig.c           |   21 ---------------------
 2 files changed, 24 deletions(-)

diff --git a/include/linux/bootconfig.h b/include/linux/bootconfig.h
index 7eb7a7f8ade7..85cdfd381877 100644
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -279,7 +279,4 @@ int __init xbc_get_info(int *node_size, size_t *data_size);
 /* XBC cleanup data structures */
 void __init xbc_exit(void);
 
-/* Debug dump functions */
-void __init xbc_debug_dump(void);
-
 #endif
diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index b7e5a32b30d3..953789171858 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -4,15 +4,12 @@
  * Masami Hiramatsu <mhiramat@kernel.org>
  */
 
-#define pr_fmt(fmt)    "bootconfig: " fmt
-
 #include <linux/bootconfig.h>
 #include <linux/bug.h>
 #include <linux/ctype.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/memblock.h>
-#include <linux/printk.h>
 #include <linux/string.h>
 
 /*
@@ -940,21 +937,3 @@ int __init xbc_init(const char *data, size_t size, const char **emsg, int *epos)
 
 	return ret;
 }
-
-/**
- * xbc_debug_dump() - Dump current XBC node list
- *
- * Dump the current XBC node list on printk buffer for debug.
- */
-void __init xbc_debug_dump(void)
-{
-	int i;
-
-	for (i = 0; i < xbc_node_num; i++) {
-		pr_debug("[%d] %s (%s) .next=%d, .child=%d .parent=%d\n", i,
-			xbc_node_get_data(xbc_nodes + i),
-			xbc_node_is_value(xbc_nodes + i) ? "value" : "key",
-			xbc_nodes[i].next, xbc_nodes[i].child,
-			xbc_nodes[i].parent);
-	}
-}

[PATCH 5/7] tools/bootconfig: Print all error message in stderr

[Masami Hiramatsu]

Print all error message in stderr. This also removes
unneeded tools/bootconfig/include/linux/printk.h.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 tools/bootconfig/include/linux/kernel.h |    2 --
 tools/bootconfig/include/linux/printk.h |   14 --------------
 tools/bootconfig/main.c                 |    2 ++
 3 files changed, 2 insertions(+), 16 deletions(-)
 delete mode 100644 tools/bootconfig/include/linux/printk.h

diff --git a/tools/bootconfig/include/linux/kernel.h b/tools/bootconfig/include/linux/kernel.h
index 2d93320aa374..c4854b8e7023 100644
--- a/tools/bootconfig/include/linux/kernel.h
+++ b/tools/bootconfig/include/linux/kernel.h
@@ -5,8 +5,6 @@
 #include <stdlib.h>
 #include <stdbool.h>
 
-#include <linux/printk.h>
-
 typedef unsigned short u16;
 typedef unsigned int   u32;
 
diff --git a/tools/bootconfig/include/linux/printk.h b/tools/bootconfig/include/linux/printk.h
deleted file mode 100644
index 036e667596eb..000000000000
--- a/tools/bootconfig/include/linux/printk.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _SKC_LINUX_PRINTK_H
-#define _SKC_LINUX_PRINTK_H
-
-#include <stdio.h>
-
-#define printk(fmt, ...) printf(fmt, ##__VA_ARGS__)
-
-#define pr_err printk
-#define pr_warn	printk
-#define pr_info	printk
-#define pr_debug printk
-
-#endif
diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index 4252c23bd35d..adc6c6e73fa9 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -15,6 +15,8 @@
 #include <linux/kernel.h>
 #include <linux/bootconfig.h>
 
+#define pr_err(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
+
 static int xbc_show_value(struct xbc_node *node, bool semicolon)
 {
 	const char *val, *eol;

[PATCH 6/7] bootconfig: Replace u16 and u32 with uint16_t and uint32_t

[Masami Hiramatsu]

Replace u16 and u32 with uint16_t and uint32_t so
that the tools/bootconfig only needs <stdint.h>.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 include/linux/bootconfig.h              |   12 ++++++------
 lib/bootconfig.c                        |   16 ++++++++--------
 tools/bootconfig/include/linux/kernel.h |    4 +---
 tools/bootconfig/main.c                 |   20 ++++++++++----------
 4 files changed, 25 insertions(+), 27 deletions(-)

diff --git a/include/linux/bootconfig.h b/include/linux/bootconfig.h
index 85cdfd381877..a6f8dc51f168 100644
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -25,10 +25,10 @@
  * The checksum will be used with the BOOTCONFIG_MAGIC and the size for
  * embedding the bootconfig in the initrd image.
  */
-static inline __init u32 xbc_calc_checksum(void *data, u32 size)
+static inline __init uint32_t xbc_calc_checksum(void *data, uint32_t size)
 {
 	unsigned char *p = data;
-	u32 ret = 0;
+	uint32_t ret = 0;
 
 	while (size--)
 		ret += *p++;
@@ -38,10 +38,10 @@ static inline __init u32 xbc_calc_checksum(void *data, u32 size)
 
 /* XBC tree node */
 struct xbc_node {
-	u16 next;
-	u16 child;
-	u16 parent;
-	u16 data;
+	uint16_t next;
+	uint16_t child;
+	uint16_t parent;
+	uint16_t data;
 } __attribute__ ((__packed__));
 
 #define XBC_KEY		0
diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index 953789171858..a2f5f582181d 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -244,7 +244,7 @@ int __init xbc_node_compose_key_after(struct xbc_node *root,
 				      struct xbc_node *node,
 				      char *buf, size_t size)
 {
-	u16 keys[XBC_DEPTH_MAX];
+	uint16_t keys[XBC_DEPTH_MAX];
 	int depth = 0, ret = 0, total = 0;
 
 	if (!node || node == root)
@@ -359,21 +359,21 @@ const char * __init xbc_node_find_next_key_value(struct xbc_node *root,
 
 /* XBC parse and tree build */
 
-static int __init xbc_init_node(struct xbc_node *node, char *data, u32 flag)
+static int __init xbc_init_node(struct xbc_node *node, char *data, uint32_t flag)
 {
 	unsigned long offset = data - xbc_data;
 
 	if (WARN_ON(offset >= XBC_DATA_MAX))
 		return -EINVAL;
 
-	node->data = (u16)offset | flag;
+	node->data = (uint16_t)offset | flag;
 	node->child = 0;
 	node->next = 0;
 
 	return 0;
 }
 
-static struct xbc_node * __init xbc_add_node(char *data, u32 flag)
+static struct xbc_node * __init xbc_add_node(char *data, uint32_t flag)
 {
 	struct xbc_node *node;
 
@@ -403,7 +403,7 @@ static inline __init struct xbc_node *xbc_last_child(struct xbc_node *node)
 	return node;
 }
 
-static struct xbc_node * __init __xbc_add_sibling(char *data, u32 flag, bool head)
+static struct xbc_node * __init __xbc_add_sibling(char *data, uint32_t flag, bool head)
 {
 	struct xbc_node *sib, *node = xbc_add_node(data, flag);
 
@@ -430,17 +430,17 @@ static struct xbc_node * __init __xbc_add_sibling(char *data, u32 flag, bool hea
 	return node;
 }
 
-static inline struct xbc_node * __init xbc_add_sibling(char *data, u32 flag)
+static inline struct xbc_node * __init xbc_add_sibling(char *data, uint32_t flag)
 {
 	return __xbc_add_sibling(data, flag, false);
 }
 
-static inline struct xbc_node * __init xbc_add_head_sibling(char *data, u32 flag)
+static inline struct xbc_node * __init xbc_add_head_sibling(char *data, uint32_t flag)
 {
 	return __xbc_add_sibling(data, flag, true);
 }
 
-static inline __init struct xbc_node *xbc_add_child(char *data, u32 flag)
+static inline __init struct xbc_node *xbc_add_child(char *data, uint32_t flag)
 {
 	struct xbc_node *node = xbc_add_sibling(data, flag);
 
diff --git a/tools/bootconfig/include/linux/kernel.h b/tools/bootconfig/include/linux/kernel.h
index c4854b8e7023..39f306c18dd0 100644
--- a/tools/bootconfig/include/linux/kernel.h
+++ b/tools/bootconfig/include/linux/kernel.h
@@ -3,11 +3,9 @@
 #define _SKC_LINUX_KERNEL_H
 
 #include <stdlib.h>
+#include <stdint.h>
 #include <stdbool.h>
 
-typedef unsigned short u16;
-typedef unsigned int   u32;
-
 #define unlikely(cond)	(cond)
 
 #define __init
diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index adc6c6e73fa9..fb7c9fb953d7 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -178,7 +178,7 @@ static int load_xbc_from_initrd(int fd, char **buf)
 {
 	struct stat stat;
 	int ret;
-	u32 size = 0, csum = 0, rcsum;
+	uint32_t size = 0, csum = 0, rcsum;
 	char magic[BOOTCONFIG_MAGIC_LEN];
 	const char *msg;
 
@@ -202,11 +202,11 @@ static int load_xbc_from_initrd(int fd, char **buf)
 	if (lseek(fd, -(8 + BOOTCONFIG_MAGIC_LEN), SEEK_END) < 0)
 		return pr_errno("Failed to lseek for size", -errno);
 
-	if (read(fd, &size, sizeof(u32)) < 0)
+	if (read(fd, &size, sizeof(uint32_t)) < 0)
 		return pr_errno("Failed to read size", -errno);
 	size = le32toh(size);
 
-	if (read(fd, &csum, sizeof(u32)) < 0)
+	if (read(fd, &csum, sizeof(uint32_t)) < 0)
 		return pr_errno("Failed to read checksum", -errno);
 	csum = le32toh(csum);
 
@@ -364,7 +364,7 @@ static int apply_xbc(const char *path, const char *xbc_path)
 	size_t total_size;
 	struct stat stat;
 	const char *msg;
-	u32 size, csum;
+	uint32_t size, csum;
 	int pos, pad;
 	int ret, fd;
 
@@ -378,7 +378,7 @@ static int apply_xbc(const char *path, const char *xbc_path)
 
 	/* Backup the bootconfig data */
 	data = calloc(size + BOOTCONFIG_ALIGN +
-		      sizeof(u32) + sizeof(u32) + BOOTCONFIG_MAGIC_LEN, 1);
+		      sizeof(uint32_t) + sizeof(uint32_t) + BOOTCONFIG_MAGIC_LEN, 1);
 	if (!data)
 		return -ENOMEM;
 	memcpy(data, buf, size);
@@ -426,17 +426,17 @@ static int apply_xbc(const char *path, const char *xbc_path)
 	}
 
 	/* To align up the total size to BOOTCONFIG_ALIGN, get padding size */
-	total_size = stat.st_size + size + sizeof(u32) * 2 + BOOTCONFIG_MAGIC_LEN;
+	total_size = stat.st_size + size + sizeof(uint32_t) * 2 + BOOTCONFIG_MAGIC_LEN;
 	pad = ((total_size + BOOTCONFIG_ALIGN - 1) & (~BOOTCONFIG_ALIGN_MASK)) - total_size;
 	size += pad;
 
 	/* Add a footer */
 	p = data + size;
-	*(u32 *)p = htole32(size);
-	p += sizeof(u32);
+	*(uint32_t *)p = htole32(size);
+	p += sizeof(uint32_t);
 
-	*(u32 *)p = htole32(csum);
-	p += sizeof(u32);
+	*(uint32_t *)p = htole32(csum);
+	p += sizeof(uint32_t);
 
 	memcpy(p, BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_LEN);
 	p += BOOTCONFIG_MAGIC_LEN;

[PATCH 7/7] bootconfig: Cleanup dummy headers in tools/bootconfig

[Masami Hiramatsu]

Cleanup dummy headers in tools/bootconfig/include except
for tools/bootconfig/include/linux/bootconfig.h.
For this change, I uses __KERNEL__ macro to split kernel
header #include and introduce xbc_alloc_mem() and
xbc_free_mem().

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 include/linux/bootconfig.h                  |   10 ++++++
 lib/bootconfig.c                            |   43 +++++++++++++++++++++++---
 tools/bootconfig/Makefile                   |    2 +
 tools/bootconfig/include/linux/bootconfig.h |   45 ++++++++++++++++++++++++++-
 tools/bootconfig/include/linux/bug.h        |   12 -------
 tools/bootconfig/include/linux/ctype.h      |    7 ----
 tools/bootconfig/include/linux/errno.h      |    7 ----
 tools/bootconfig/include/linux/kernel.h     |   14 --------
 tools/bootconfig/include/linux/memblock.h   |   11 -------
 tools/bootconfig/include/linux/string.h     |   32 -------------------
 tools/bootconfig/main.c                     |    1 -
 11 files changed, 93 insertions(+), 91 deletions(-)
 delete mode 100644 tools/bootconfig/include/linux/bug.h
 delete mode 100644 tools/bootconfig/include/linux/ctype.h
 delete mode 100644 tools/bootconfig/include/linux/errno.h
 delete mode 100644 tools/bootconfig/include/linux/kernel.h
 delete mode 100644 tools/bootconfig/include/linux/memblock.h
 delete mode 100644 tools/bootconfig/include/linux/string.h

diff --git a/include/linux/bootconfig.h b/include/linux/bootconfig.h
index a6f8dc51f168..a4665c7ab07c 100644
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -7,8 +7,18 @@
  * Author: Masami Hiramatsu <mhiramat@kernel.org>
  */
 
+#ifdef __KERNEL__
 #include <linux/kernel.h>
 #include <linux/types.h>
+#else /* !__KERNEL__ */
+/*
+ * NOTE: This is only for tools/bootconfig, because tools/bootconfig will
+ * run the parser sanity test.
+ * This does NOT mean linux/bootconfig.h is available in the user space.
+ * However, if you change this file, please make sure the tools/bootconfig
+ * has no issue on building and running.
+ */
+#endif
 
 #define BOOTCONFIG_MAGIC	"#BOOTCONFIG\n"
 #define BOOTCONFIG_MAGIC_LEN	12
diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index a2f5f582181d..a056ae137750 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -4,6 +4,7 @@
  * Masami Hiramatsu <mhiramat@kernel.org>
  */
 
+#ifdef __KERNEL__
 #include <linux/bootconfig.h>
 #include <linux/bug.h>
 #include <linux/ctype.h>
@@ -11,6 +12,16 @@
 #include <linux/kernel.h>
 #include <linux/memblock.h>
 #include <linux/string.h>
+#else /* !__KERNEL__ */
+/*
+ * NOTE: This is only for tools/bootconfig, because tools/bootconfig will
+ * run the parser sanity test.
+ * This does NOT mean lib/bootconfig.c is available in the user space.
+ * However, if you change this file, please make sure the tools/bootconfig
+ * has no issue on building and running.
+ */
+#include <linux/bootconfig.h>
+#endif
 
 /*
  * Extra Boot Config (XBC) is given as tree-structured ascii text of
@@ -31,6 +42,29 @@ static int xbc_err_pos __initdata;
 static int open_brace[XBC_DEPTH_MAX] __initdata;
 static int brace_index __initdata;
 
+#ifdef __KERNEL__
+static inline void *xbc_alloc_mem(size_t size)
+{
+	return memblock_alloc(size, SMP_CACHE_BYTES);
+}
+
+static inline void xbc_free_mem(void *addr, size_t size)
+{
+	memblock_free_ptr(addr, size);
+}
+
+#else /* !__KERNEL__ */
+
+static inline void *xbc_alloc_mem(size_t size)
+{
+	return malloc(size);
+}
+
+static inline void xbc_free_mem(void *addr, size_t size)
+{
+	free(addr);
+}
+#endif
 /**
  * xbc_get_info() - Get the information of loaded boot config
  * node_size: A pointer to store the number of nodes.
@@ -859,11 +893,11 @@ static int __init xbc_parse_tree(void)
  */
 void __init xbc_exit(void)
 {
-	memblock_free_ptr(xbc_data, xbc_data_size);
+	xbc_free_mem(xbc_data, xbc_data_size);
 	xbc_data = NULL;
 	xbc_data_size = 0;
 	xbc_node_num = 0;
-	memblock_free_ptr(xbc_nodes, sizeof(struct xbc_node) * XBC_NODE_MAX);
+	xbc_free_mem(xbc_nodes, sizeof(struct xbc_node) * XBC_NODE_MAX);
 	xbc_nodes = NULL;
 	brace_index = 0;
 }
@@ -902,7 +936,7 @@ int __init xbc_init(const char *data, size_t size, const char **emsg, int *epos)
 		return -ERANGE;
 	}
 
-	xbc_data = memblock_alloc(size + 1, SMP_CACHE_BYTES);
+	xbc_data = xbc_alloc_mem(size + 1);
 	if (!xbc_data) {
 		if (emsg)
 			*emsg = "Failed to allocate bootconfig data";
@@ -912,8 +946,7 @@ int __init xbc_init(const char *data, size_t size, const char **emsg, int *epos)
 	xbc_data[size] = '\0';
 	xbc_data_size = size + 1;
 
-	xbc_nodes = memblock_alloc(sizeof(struct xbc_node) * XBC_NODE_MAX,
-				   SMP_CACHE_BYTES);
+	xbc_nodes = xbc_alloc_mem(sizeof(struct xbc_node) * XBC_NODE_MAX);
 	if (!xbc_nodes) {
 		if (emsg)
 			*emsg = "Failed to allocate bootconfig nodes";
diff --git a/tools/bootconfig/Makefile b/tools/bootconfig/Makefile
index f1eec3ccbe18..566c3e0ee561 100644
--- a/tools/bootconfig/Makefile
+++ b/tools/bootconfig/Makefile
@@ -17,7 +17,7 @@ ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
 
 all: $(ALL_PROGRAMS) test
 
-$(OUTPUT)bootconfig: main.c $(LIBSRC)
+$(OUTPUT)bootconfig: main.c include/linux/bootconfig.h $(LIBSRC)
 	$(CC) $(filter %.c,$^) $(CFLAGS) -o $@
 
 test: $(ALL_PROGRAMS) test-bootconfig.sh
diff --git a/tools/bootconfig/include/linux/bootconfig.h b/tools/bootconfig/include/linux/bootconfig.h
index de7f30f99af3..6784296a0692 100644
--- a/tools/bootconfig/include/linux/bootconfig.h
+++ b/tools/bootconfig/include/linux/bootconfig.h
@@ -2,10 +2,53 @@
 #ifndef _BOOTCONFIG_LINUX_BOOTCONFIG_H
 #define _BOOTCONFIG_LINUX_BOOTCONFIG_H
 
-#include "../../../../include/linux/bootconfig.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
 
 #ifndef fallthrough
 # define fallthrough
 #endif
 
+#define WARN_ON(cond)	\
+	((cond) ? printf("Internal warning(%s:%d, %s): %s\n",	\
+			__FILE__, __LINE__, __func__, #cond) : 0)
+
+#define unlikely(cond)	(cond)
+
+/* Copied from lib/string.c */
+static inline char *skip_spaces(const char *str)
+{
+	while (isspace(*str))
+		++str;
+	return (char *)str;
+}
+
+static inline char *strim(char *s)
+{
+	size_t size;
+	char *end;
+
+	size = strlen(s);
+	if (!size)
+		return s;
+
+	end = s + size - 1;
+	while (end >= s && isspace(*end))
+		end--;
+	*(end + 1) = '\0';
+
+	return skip_spaces(s);
+}
+
+#define __init
+#define __initdata
+
+#include "../../../../include/linux/bootconfig.h"
+
 #endif
diff --git a/tools/bootconfig/include/linux/bug.h b/tools/bootconfig/include/linux/bug.h
deleted file mode 100644
index 7b65a389c0dd..000000000000
--- a/tools/bootconfig/include/linux/bug.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _SKC_LINUX_BUG_H
-#define _SKC_LINUX_BUG_H
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#define WARN_ON(cond)	\
-	((cond) ? printf("Internal warning(%s:%d, %s): %s\n",	\
-			__FILE__, __LINE__, __func__, #cond) : 0)
-
-#endif
diff --git a/tools/bootconfig/include/linux/ctype.h b/tools/bootconfig/include/linux/ctype.h
deleted file mode 100644
index c56ecc136448..000000000000
--- a/tools/bootconfig/include/linux/ctype.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _SKC_LINUX_CTYPE_H
-#define _SKC_LINUX_CTYPE_H
-
-#include <ctype.h>
-
-#endif
diff --git a/tools/bootconfig/include/linux/errno.h b/tools/bootconfig/include/linux/errno.h
deleted file mode 100644
index 5d9f91ec2fda..000000000000
--- a/tools/bootconfig/include/linux/errno.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _SKC_LINUX_ERRNO_H
-#define _SKC_LINUX_ERRNO_H
-
-#include <asm/errno.h>
-
-#endif
diff --git a/tools/bootconfig/include/linux/kernel.h b/tools/bootconfig/include/linux/kernel.h
deleted file mode 100644
index 39f306c18dd0..000000000000
--- a/tools/bootconfig/include/linux/kernel.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _SKC_LINUX_KERNEL_H
-#define _SKC_LINUX_KERNEL_H
-
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-
-#define unlikely(cond)	(cond)
-
-#define __init
-#define __initdata
-
-#endif
diff --git a/tools/bootconfig/include/linux/memblock.h b/tools/bootconfig/include/linux/memblock.h
deleted file mode 100644
index f2e506f7d57f..000000000000
--- a/tools/bootconfig/include/linux/memblock.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _XBC_LINUX_MEMBLOCK_H
-#define _XBC_LINUX_MEMBLOCK_H
-
-#include <stdlib.h>
-
-#define SMP_CACHE_BYTES	0
-#define memblock_alloc(size, align)	malloc(size)
-#define memblock_free_ptr(paddr, size)	free(paddr)
-
-#endif
diff --git a/tools/bootconfig/include/linux/string.h b/tools/bootconfig/include/linux/string.h
deleted file mode 100644
index 8267af75153a..000000000000
--- a/tools/bootconfig/include/linux/string.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _SKC_LINUX_STRING_H
-#define _SKC_LINUX_STRING_H
-
-#include <string.h>
-
-/* Copied from lib/string.c */
-static inline char *skip_spaces(const char *str)
-{
-	while (isspace(*str))
-		++str;
-	return (char *)str;
-}
-
-static inline char *strim(char *s)
-{
-	size_t size;
-	char *end;
-
-	size = strlen(s);
-	if (!size)
-		return s;
-
-	end = s + size - 1;
-	while (end >= s && isspace(*end))
-		end--;
-	*(end + 1) = '\0';
-
-	return skip_spaces(s);
-}
-
-#endif
diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index fb7c9fb953d7..156b62a163c5 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -12,7 +12,6 @@
 #include <errno.h>
 #include <endian.h>
 
-#include <linux/kernel.h>
 #include <linux/bootconfig.h>
 
 #define pr_err(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)