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common/board_f: Initialized global data for generic board 

Some platforms (tested on mpc85xx, mpc86xx) use global data before calling
function baord_inti_f(). The data should not be cleared later. Any arch
which uses global data in generic board board_init_f() should define
CONFIG_SYS_GENERIC_GLOBAL_DATA.

Signed-off-by: York Sun <yorksun@freescale.com>
CC: Scott Wood <scottwood@freescale.com>
CC: Simon Glass <sjg@chromium.org>
CC: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Simon Glass <sjg@chromium.org>
utp
York Sun 2014-05-02 17:28:04 -07:00 committed by Tom Rini
parent 7e18a1b958
commit 2a1680e30e
6 changed files with 20 additions and 5 deletions
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6
README
View File

@ -451,6 +451,12 @@ The following options need to be configured:
supported, core will start to execute uboot when wakes up.
- Generic CPU options:
CONFIG_SYS_GENERIC_GLOBAL_DATA
Defines global data is initialized in generic board board_init_f().
If this macro is defined, global data is created and cleared in
generic board board_init_f(). Without this macro, architecture/board
should initialize global data before calling board_init_f().
CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN
Defines the endianess of the CPU. Implementation of those

2
arch/arc/include/asm/config.h
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@ -7,6 +7,8 @@
#ifndef __ASM_ARC_CONFIG_H_
#define __ASM_ARC_CONFIG_H_
#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#define CONFIG_LMB
#endif /*__ASM_ARC_CONFIG_H_ */

2
arch/arm/include/asm/config.h
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@ -7,6 +7,8 @@
#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_
#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#define CONFIG_LMB
#define CONFIG_SYS_BOOT_RAMDISK_HIGH

2
arch/mips/include/asm/config.h
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@ -7,6 +7,8 @@
#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_
#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#define CONFIG_LMB
#define CONFIG_SYS_BOOT_RAMDISK_HIGH

1
arch/sandbox/include/asm/config.h
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@ -7,6 +7,7 @@
#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_
#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#define CONFIG_SANDBOX_ARCH
/* Used by drivers/spi/sandbox_spi.c and arch/sandbox/include/asm/state.h */

12
common/board_f.c
View File

@ -961,20 +961,22 @@ static init_fnc_t init_sequence_f[] = {
void board_init_f(ulong boot_flags)
{
#ifndef CONFIG_X86
#ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
/*
* For some archtectures, global data is initialized and used before
* calling this function. The data should be preserved. For others,
* CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
* here to host global data until relocation.
*/
gd_t data;
gd = &data;
#endif
/*
* Clear global data before it is accessed at debug print
* in initcall_run_list. Otherwise the debug print probably
* get the wrong vaule of gd->have_console.
*/
#if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
!defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
!defined(CONFIG_MPC86xx) && !defined(CONFIG_X86)
zero_global_data();
#endif