[U-Boot] [RFC PATCH v2 22/28] x86: Enable generic board support

[Simon Glass]

This enables generic board support so that x86 boards can define
CONFIG_SYS_GENERIC_BOARD.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/x86/config.mk                 |    3 ---
 arch/x86/include/asm/global_data.h |    7 +++++++
 arch/x86/include/asm/u-boot.h      |   11 +++++++++++
 arch/x86/lib/Makefile              |    4 +++-
 common/board_r.c                   |    5 +++++
 5 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/arch/x86/config.mk b/arch/x86/config.mk
index 7be3036..23cacff 100644
--- a/arch/x86/config.mk
+++ b/arch/x86/config.mk
@@ -48,6 +48,3 @@ NORMAL_LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
 PREFIXED_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/$(shell basename $(NORMAL_LIBGCC))
 
 export USE_PRIVATE_LIBGCC=$(shell dirname $(PREFIXED_LIBGCC))
-
-# Move to unified board system later
-CONFIG_SYS_LEGACY_BOARD := y
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h
index 05a2139..c5df175 100644
--- a/arch/x86/include/asm/global_data.h
+++ b/arch/x86/include/asm/global_data.h
@@ -23,6 +23,11 @@
 
 #ifndef	__ASM_GBL_DATA_H
 #define __ASM_GBL_DATA_H
+
+#ifdef CONFIG_SYS_GENERIC_BOARD
+/* Use the generic board which requires a unified global_data */
+#include <asm-generic/global_data.h>
+#else
 /*
  * The following data structure is placed in some memory wich is
  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
@@ -73,6 +78,8 @@ extern gd_t *gd;
 #define GD_FLG_DISABLE_CONSOLE	0x00040	/* Disable console (in & out)		*/
 #define GD_FLG_ENV_READY	0x00080	/* Environment imported into hash table	*/
 
+#endif /* nCONFIG_SYS_GENERIC_BOARD */
+
 #if 0
 #define DECLARE_GLOBAL_DATA_PTR
 #else
diff --git a/arch/x86/include/asm/u-boot.h b/arch/x86/include/asm/u-boot.h
index dd42209..ef8b7d5 100644
--- a/arch/x86/include/asm/u-boot.h
+++ b/arch/x86/include/asm/u-boot.h
@@ -36,6 +36,13 @@
 #ifndef _U_BOOT_H_
 #define _U_BOOT_H_	1
 
+#ifdef CONFIG_SYS_GENERIC_BOARD
+/* Use the generic board which requires a unified bd_info */
+#include <asm-generic/u-boot.h>
+#else
+
+#ifndef __ASSEMBLY__
+
 typedef struct bd_info {
 	unsigned long	bi_memstart;	/* start of DRAM memory */
 	phys_size_t	bi_memsize;	/* size	 of DRAM memory in bytes */
@@ -58,6 +65,10 @@ typedef struct bd_info {
 	}bi_dram[CONFIG_NR_DRAM_BANKS];
 } bd_t;
 
+#endif /* __ASSEMBLY__ */
+
+#endif /* nCONFIG_SYS_GENERIC_BOARD */
+
 /* For image.h:image_check_target_arch() */
 #define IH_ARCH_DEFAULT IH_ARCH_I386
 
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index d584aa4..8a6f8eb 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -30,7 +30,9 @@ SOBJS-$(CONFIG_SYS_PCI_BIOS)	+= bios_pci.o
 SOBJS-$(CONFIG_SYS_X86_REALMODE)	+= realmode_switch.o
 
 COBJS-$(CONFIG_SYS_PC_BIOS)	+= bios_setup.o
-COBJS-y	+= board.o
+ifeq ($(CONFIG_SYS_GENERIC_BOARD),)
+COBJS-y += board.o
+endif
 COBJS-y	+= bootm.o
 COBJS-y	+= gcc.o
 COBJS-y	+= interrupts.o
diff --git a/common/board_r.c b/common/board_r.c
index d63c138..807aec8 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -56,12 +56,15 @@ static int initr_reloc(void)
  * Some of these functions are needed purely because the functions they
  * call return void. If we change them to return 0, these stubs can go away.
  */
+#ifdef CONFIG_ARM
 static int initr_caches(void)
 {
+	/* TODO: sort out x86 code here */
 	/* Enable caches */
 	enable_caches();
 	return 0;
 }
+#endif
 
 static int initr_reloc_global_data(void)
 {
@@ -232,11 +235,13 @@ static int initr_api(void)
 #endif
 
 /* enable exceptions */
+#ifdef CONFIG_ARM
 static int initr_enable_interrupts(void)
 {
 	enable_interrupts();
 	return 0;
 }
+#endif
 
 #ifdef CONFIG_CMD_NET
 static int initr_ethaddr(void)
-- 
1.7.3.1