[PATCH 2/2] config: Use CONFIG_SYS_BIG_ENDIAN in code whenever possible

17 Jul 2024

So CONFIG_SYS_BIG_ENDIAN is our cross architecture option for
selecting machine endian, while the old CONFIG_CPU_BIG_ENDIAN
is defined by Arc only.
Use it whenever possible to ensure big endian code path is enabled
for all possible big endian machines.
Signed-off-by: Jiaxun Yang jiaxun.yang@flygoat.com
---
 Makefile                                            |  2 +-
 arch/arc/include/asm/arc-bcr.h                      | 10 +++++-----
 arch/arm/cpu/armv8/linux-kernel-image-header-vars.h |  4 ++--
 drivers/mtd/nand/raw/brcmnand/brcmnand.c            |  2 +-
 scripts/Makefile.build                              |  2 +-
 5 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index f5b2512f3690..aa791426424f 100644
--- a/Makefile
+++ b/Makefile
@@ -1048,7 +1048,7 @@ endif
 CHECKFLAGS += --arch=$(ARCH)
# insure the checker run with the right endianness
-CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
+CHECKFLAGS += $(if $(CONFIG_SYS_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
# the checker needs the correct machine size
 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32)
diff --git a/arch/arc/include/asm/arc-bcr.h b/arch/arc/include/asm/arc-bcr.h
index a6c972bf1e31..d4de9b818c1a 100644
--- a/arch/arc/include/asm/arc-bcr.h
+++ b/arch/arc/include/asm/arc-bcr.h
@@ -15,7 +15,7 @@
union bcr_di_cache {
    struct {
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
    	unsigned int pad:12, line_len:4, sz:4, config:4, ver:8;
 #else
    	unsigned int ver:8, config:4, sz:4, line_len:4, pad:12;
@@ -26,7 +26,7 @@ union bcr_di_cache {
union bcr_slc_cfg {
    struct {
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
    	unsigned int pad:24, way:2, lsz:2, sz:4;
 #else
    	unsigned int sz:4, lsz:2, way:2, pad:24;
@@ -37,7 +37,7 @@ union bcr_slc_cfg {
union bcr_generic {
    struct {
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
    	unsigned int pad:24, ver:8;
 #else
    	unsigned int ver:8, pad:24;
@@ -48,7 +48,7 @@ union bcr_generic {
union bcr_clust_cfg {
    struct {
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
    	unsigned int pad:7, c:1, num_entries:8, num_cores:8, ver:8;
 #else
    	unsigned int ver:8, num_cores:8, num_entries:8, c:1, pad:7;
@@ -59,7 +59,7 @@ union bcr_clust_cfg {
union bcr_mmu_4 {
    struct {
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
    unsigned int ver:8, sasid:1, sz1:4, sz0:4, res:2, pae:1,
    	     n_ways:2, n_entry:2, n_super:2, u_itlb:3, u_dtlb:3;
 #else
diff --git a/arch/arm/cpu/armv8/linux-kernel-image-header-vars.h b/arch/arm/cpu/armv8/linux-kernel-image-header-vars.h
index b6394aee1657..c6af825dbc7b 100644
--- a/arch/arm/cpu/armv8/linux-kernel-image-header-vars.h
+++ b/arch/arm/cpu/armv8/linux-kernel-image-header-vars.h
@@ -31,7 +31,7 @@
  * when PIE is in effect. So we need to split them up in 32-bit high and low
  * words.
  */
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
 #define DATA_LE32(data)				\
    ((((data) & 0x000000ff) << 24) |	\
     (((data) & 0x0000ff00) << 8)  |	\
@@ -55,7 +55,7 @@
 #endif
 #define __MEM_USAGE		(__CODE_DATA_SIZE + __MAX_EXTRA_RAM_USAGE)
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
 #define __HEAD_FLAG_BE		1
 #else
 #define __HEAD_FLAG_BE		0
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index b7bf7cc0893d..b1af3f717d43 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -1698,7 +1698,7 @@ static int brcmnand_fill_dma_desc(struct brcmnand_host *host,
    desc->cmd_irq = (dma_cmd << 24) |
    	(end ? (0x03 << 8) : 0) | /* IRQ | STOP */
    	(!!begin) | ((!!end) << 1); /* head, tail */
-#ifdef CONFIG_CPU_BIG_ENDIAN
+#ifdef CONFIG_SYS_BIG_ENDIAN
    desc->cmd_irq |= 0x01 << 12;
 #endif
    desc->dram_addr = lower_32_bits(buf);
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 97dd4a64f6ef..99cc29595b4a 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -224,7 +224,7 @@ recordmcount_source := $(srctree)/scripts/recordmcount.c \
    	    $(srctree)/scripts/recordmcount.h
 else
 sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \
-	"$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
+	"$(if $(CONFIG_SYS_BIG_ENDIAN),big,little)" \
    "$(if $(CONFIG_64BIT),64,32)" \
    "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS)" \
    "$(LD) $(KBUILD_LDFLAGS)" "$(NM)" "$(RM)" "$(MV)" \
-- 
2.45.2


    