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x86: Do not clear high table area for S3

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When SeaBIOS is being used, U-Boot reserves a memory area to be
used for configuration tables like ACPI. But it should not be
cleared otherwise ACPI table will be missing.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Bin Meng 2017-04-21 07:24:40 -07:00
parent ba65808e7d
commit 95e50dd197
1 changed files with 6 additions and 1 deletions
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7
arch/x86/lib/coreboot_table.c
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@ -6,6 +6,7 @@
#include <common.h>
#include <vbe.h>
#include <asm/acpi_s3.h>
#include <asm/coreboot_tables.h>
#include <asm/e820.h>
@ -19,7 +20,11 @@ int high_table_reserve(void)
gd->arch.high_table_ptr = gd->start_addr_sp;
/* clear the memory */
memset((void *)gd->arch.high_table_ptr, 0, CONFIG_HIGH_TABLE_SIZE);
#ifdef CONFIG_HAVE_ACPI_RESUME
if (gd->arch.prev_sleep_state != ACPI_S3)
#endif
memset((void *)gd->arch.high_table_ptr, 0,
CONFIG_HIGH_TABLE_SIZE);
gd->start_addr_sp &= ~0xf;