[PATCH v2 01/15] x86: Introduce USE_EARLY_BOARD_INIT option

[Andy Shevchenko]

Introduce USE_EARLY_BOARD_INIT option and select it by the actual users.

Cc: George McCollister <george.mccollis...@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Reviewed-by: Stefan Roese <s...@denx.de>                                        
                                    Reviewed-by: Aiden Park 
<aiden.p...@intel.com>
---
v2: added Rb tag(s), appended CONFIG prefix when use the option in the code
 arch/x86/Kconfig                      | 3 +++
 arch/x86/cpu/start.S                  | 3 +++
 board/google/chromebook_coral/Kconfig | 1 +
 board/google/chromebook_link/Kconfig  | 1 +
 board/google/chromebook_samus/Kconfig | 1 +
 5 files changed, 9 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index a34b108fffa6..76276c602745 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -203,6 +203,9 @@ config SPL_X86_32BIT_INIT
        help
          This is enabled when 32-bit init is in SPL
 
+config USE_EARLY_BOARD_INIT
+       bool
+
 config RESET_SEG_START
        hex
        depends on X86_RESET_VECTOR
diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S
index 4ad515ce0856..3b6ed37bc07e 100644
--- a/arch/x86/cpu/start.S
+++ b/arch/x86/cpu/start.S
@@ -88,6 +88,7 @@ _start:
        /* Clear the interrupt vectors */
        lidt    blank_idt_ptr
 
+#ifdef CONFIG_USE_EARLY_BOARD_INIT
        /*
         * Critical early platform init - generally not used, we prefer init
         * to happen later when we have a console, in case something goes
@@ -96,6 +97,8 @@ _start:
        jmp     early_board_init
 .globl early_board_init_ret
 early_board_init_ret:
+#endif
+
        post_code(POST_START)
 
        /* Initialise Cache-As-RAM */
diff --git a/board/google/chromebook_coral/Kconfig 
b/board/google/chromebook_coral/Kconfig
index 940bee89b0b6..27671958e146 100644
--- a/board/google/chromebook_coral/Kconfig
+++ b/board/google/chromebook_coral/Kconfig
@@ -18,6 +18,7 @@ config SYS_TEXT_BASE
 config BOARD_SPECIFIC_OPTIONS # dummy
        def_bool y
        select X86_RESET_VECTOR
+       select USE_EARLY_BOARD_INIT
        select INTEL_APOLLOLAKE
        select BOARD_ROMSIZE_KB_16384
 
diff --git a/board/google/chromebook_link/Kconfig 
b/board/google/chromebook_link/Kconfig
index 944716d002c9..dd29ddf694be 100644
--- a/board/google/chromebook_link/Kconfig
+++ b/board/google/chromebook_link/Kconfig
@@ -19,6 +19,7 @@ config SYS_TEXT_BASE
 config BOARD_SPECIFIC_OPTIONS # dummy
        def_bool y
        select X86_RESET_VECTOR
+       select USE_EARLY_BOARD_INIT
        select NORTHBRIDGE_INTEL_IVYBRIDGE
        select HAVE_INTEL_ME
        select BOARD_ROMSIZE_KB_8192
diff --git a/board/google/chromebook_samus/Kconfig 
b/board/google/chromebook_samus/Kconfig
index 90c23cba1bed..9f66d7998870 100644
--- a/board/google/chromebook_samus/Kconfig
+++ b/board/google/chromebook_samus/Kconfig
@@ -19,6 +19,7 @@ config SYS_TEXT_BASE
 config BOARD_SPECIFIC_OPTIONS # dummy
        def_bool y
        select X86_RESET_VECTOR
+       select USE_EARLY_BOARD_INIT
        select INTEL_BROADWELL
        select HAVE_INTEL_ME
        select BOARD_ROMSIZE_KB_8192
-- 
2.28.0