Commit e2f88dfd2d96 ("libfdt: Introduce new ARCH_FIXUP_FDT option") allows us to skip memory setup of DTB, but a problem for ARM is that spin_table_update_dt() and psci_update_dt() are skipped as well if CONFIG_ARCH_FIXUP_FDT is disabled.
This commit allows us to skip only fdt_fixup_memory_banks() instead of the whole of arch_fixup_fdt(). It will be useful when we want to use a memory node from a kernel DTB as is, but need some fixups for Spin-Table/PSCI.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
Changes in v2: - Add empty stub to ARC, PowerPC, Microblaze instead of a weak function common/image-fdt.c
Kconfig | 5 ++--- arch/arc/lib/bootm.c | 5 +++++ arch/arm/lib/bootm-fdt.c | 2 -- arch/arm/lib/bootm.c | 2 -- arch/microblaze/lib/bootm.c | 5 +++++ arch/mips/lib/bootm.c | 2 -- arch/powerpc/lib/bootm.c | 5 +++++ common/fdt_support.c | 2 ++ common/image-fdt.c | 2 -- include/fdt_support.h | 8 ++++++++ 10 files changed, 27 insertions(+), 11 deletions(-)
diff --git a/Kconfig b/Kconfig index 1263d0b..b7cb142 100644 --- a/Kconfig +++ b/Kconfig @@ -324,9 +324,8 @@ config SYS_CLK_FREQ help TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
-config ARCH_FIXUP_FDT - bool "Enable arch_fixup_fdt() call" - depends on ARM || MIPS +config ARCH_FIXUP_FDT_MEMORY + bool "Enable arch_fixup_memory_banks() call" default y help Enable FDT memory map syncup before OS boot. This feature can be diff --git a/arch/arc/lib/bootm.c b/arch/arc/lib/bootm.c index 04d9d9c..5798149 100644 --- a/arch/arc/lib/bootm.c +++ b/arch/arc/lib/bootm.c @@ -37,6 +37,11 @@ void arch_lmb_reserve(struct lmb *lmb) lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp)); }
+int arch_fixup_fdt(void *blob) +{ + return 0; +} + static int cleanup_before_linux(void) { disable_interrupts(); diff --git a/arch/arm/lib/bootm-fdt.c b/arch/arm/lib/bootm-fdt.c index a517550..4481f9e 100644 --- a/arch/arm/lib/bootm-fdt.c +++ b/arch/arm/lib/bootm-fdt.c @@ -25,7 +25,6 @@
DECLARE_GLOBAL_DATA_PTR;
-#ifdef CONFIG_ARCH_FIXUP_FDT int arch_fixup_fdt(void *blob) { bd_t *bd = gd->bd; @@ -61,4 +60,3 @@ int arch_fixup_fdt(void *blob)
return 0; } -#endif diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c index 53c3141..0e890ce 100644 --- a/arch/arm/lib/bootm.c +++ b/arch/arm/lib/bootm.c @@ -372,10 +372,8 @@ void boot_prep_vxworks(bootm_headers_t *images) if (images->ft_addr) { off = fdt_path_offset(images->ft_addr, "/memory"); if (off < 0) { -#ifdef CONFIG_ARCH_FIXUP_FDT if (arch_fixup_fdt(images->ft_addr)) puts("## WARNING: fixup memory failed!\n"); -#endif } } #endif diff --git a/arch/microblaze/lib/bootm.c b/arch/microblaze/lib/bootm.c index 3eb3440..2732203 100644 --- a/arch/microblaze/lib/bootm.c +++ b/arch/microblaze/lib/bootm.c @@ -17,6 +17,11 @@
DECLARE_GLOBAL_DATA_PTR;
+int arch_fixup_fdt(void *blob) +{ + return 0; +} + int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images) { diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c index 0c6a4ab..aa0475a 100644 --- a/arch/mips/lib/bootm.c +++ b/arch/mips/lib/bootm.c @@ -253,7 +253,6 @@ static int boot_reloc_fdt(bootm_headers_t *images) #endif }
-#ifdef CONFIG_ARCH_FIXUP_FDT int arch_fixup_fdt(void *blob) { #if CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && CONFIG_IS_ENABLED(OF_LIBFDT) @@ -265,7 +264,6 @@ int arch_fixup_fdt(void *blob) return 0; #endif } -#endif
static int boot_setup_fdt(bootm_headers_t *images) { diff --git a/arch/powerpc/lib/bootm.c b/arch/powerpc/lib/bootm.c index ef15e7a..17c5ed1 100644 --- a/arch/powerpc/lib/bootm.c +++ b/arch/powerpc/lib/bootm.c @@ -38,6 +38,11 @@ static void set_clocks_in_mhz (bd_t *kbd); #define CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE (768*1024*1024) #endif
+int arch_fixup_fdt(void *blob) +{ + return 0; +} + static void boot_jump_linux(bootm_headers_t *images) { void (*kernel)(bd_t *, ulong r4, ulong r5, ulong r6, diff --git a/common/fdt_support.c b/common/fdt_support.c index 0609470..c9f7019 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -381,6 +381,7 @@ void do_fixup_by_compat_u32(void *fdt, const char *compat, do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); }
+#ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY /* * fdt_pack_reg - pack address and size array into the "reg"-suitable stream */ @@ -459,6 +460,7 @@ int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) } return 0; } +#endif
int fdt_fixup_memory(void *blob, u64 start, u64 size) { diff --git a/common/image-fdt.c b/common/image-fdt.c index 5454227..e7540be 100644 --- a/common/image-fdt.c +++ b/common/image-fdt.c @@ -474,12 +474,10 @@ int image_setup_libfdt(bootm_headers_t *images, void *blob, printf("ERROR: /chosen node create failed\n"); goto err; } -#ifdef CONFIG_ARCH_FIXUP_FDT if (arch_fixup_fdt(blob) < 0) { printf("ERROR: arch-specific fdt fixup failed\n"); goto err; } -#endif if (IMAGE_OF_BOARD_SETUP) { fdt_ret = ft_board_setup(blob, gd->bd); if (fdt_ret) { diff --git a/include/fdt_support.h b/include/fdt_support.h index 506bc5a..955c121 100644 --- a/include/fdt_support.h +++ b/include/fdt_support.h @@ -93,7 +93,15 @@ int fdt_fixup_memory(void *blob, u64 start, u64 size); * property will be left untouched. * @return 0 if ok, or -1 or -FDT_ERR_... on error */ +#ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks); +#else +static inline int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], + int banks) +{ + return 0; +} +#endif
void fdt_fixup_ethernet(void *fdt); int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,