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x86: Put global data on the stack

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Putting global data on the stack simplifies the init process (and makes it
slightly quicker). During the 'flash' stage of the init sequence, global
data is in the CAR stack. After SDRAM is initialised, global data is copied
from CAR to the SDRAM stack

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Graeme Russ
2012-11-27 15:38:36 +00:00
committed by Simon Glass
parent e4fb611649
commit 8d61625d6a
9 changed files with 65 additions and 61 deletions
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5
include/configs/coreboot.h
View File

@@ -210,12 +210,11 @@
* (128kB + Environment Sector Size) malloc pool
*/
#define CONFIG_SYS_STACK_SIZE (32 * 1024)
#define CONFIG_SYS_INIT_SP_ADDR (256 * 1024 + 16 * 1024)
#define CONFIG_SYS_CAR_ADDR 0x19200000
#define CONFIG_SYS_CAR_SIZE (16 * 1024)
#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE
#define CONFIG_SYS_MONITOR_LEN (256 * 1024)
#define CONFIG_SYS_MALLOC_LEN (0x20000 + 128 * 1024)
/* Address of temporary Global Data */
#define CONFIG_SYS_INIT_GD_ADDR (256 * 1024)
/* allow to overwrite serial and ethaddr */

6
include/configs/eNET.h
View File

@@ -168,16 +168,10 @@
#define CONFIG_SYS_STACK_SIZE (32 * 1024)
#define CONFIG_SYS_CAR_ADDR 0x19200000
#define CONFIG_SYS_CAR_SIZE (16 * 1024)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_CAR_ADDR + \
CONFIG_SYS_CAR_SIZE)
#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE
#define CONFIG_SYS_MONITOR_LEN (256 * 1024)
#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SECT_SIZE + \
128*1024)
/* Address of temporary Global Data */
#define CONFIG_SYS_INIT_GD_ADDR CONFIG_SYS_CAR_ADDR
/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE