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-rw-r--r--src/arch/x86/Kconfig6
-rw-r--r--src/arch/x86/tables.c7
2 files changed, 9 insertions, 4 deletions
diff --git a/src/arch/x86/Kconfig b/src/arch/x86/Kconfig
index a4e5314ab5..21107aa48b 100644
--- a/src/arch/x86/Kconfig
+++ b/src/arch/x86/Kconfig
@@ -322,4 +322,10 @@ config MAX_PIRQ_LINKS
table specifies links greater than 4, pirq_route_irqs will not
function properly, unless this variable is correctly set.
+config MAX_ACPI_TABLE_SIZE_KB
+ int
+ default 144
+ help
+ Set the maximum size of all ACPI tables in KiB.
+
endif
diff --git a/src/arch/x86/tables.c b/src/arch/x86/tables.c
index 066e635675..7e653f7245 100644
--- a/src/arch/x86/tables.c
+++ b/src/arch/x86/tables.c
@@ -78,8 +78,7 @@ static unsigned long write_mptable(unsigned long rom_table_end)
static unsigned long write_acpi_table(unsigned long rom_table_end)
{
unsigned long high_table_pointer;
-
-#define MAX_ACPI_SIZE (144 * 1024)
+ const size_t max_acpi_size = CONFIG_MAX_ACPI_TABLE_SIZE_KB * KiB;
post_code(0x9c);
@@ -96,7 +95,7 @@ static unsigned long write_acpi_table(unsigned long rom_table_end)
* how far we get.
*/
high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_ACPI,
- MAX_ACPI_SIZE);
+ max_acpi_size);
if (high_table_pointer) {
unsigned long acpi_start = high_table_pointer;
unsigned long new_high_table_pointer;
@@ -104,7 +103,7 @@ static unsigned long write_acpi_table(unsigned long rom_table_end)
rom_table_end = ALIGN_UP(rom_table_end, 16);
new_high_table_pointer = write_acpi_tables(high_table_pointer);
if (new_high_table_pointer > (high_table_pointer
- + MAX_ACPI_SIZE))
+ + max_acpi_size))
printk(BIOS_ERR, "ERROR: Increase ACPI size\n");
printk(BIOS_DEBUG, "ACPI tables: %ld bytes.\n",
new_high_table_pointer - high_table_pointer);