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authorDuncan Laurie <dlaurie@google.com>2020-03-17 18:32:54 -0700
committerPatrick Georgi <pgeorgi@google.com>2020-03-31 10:39:33 +0000
commitf02bf35e009e7e4c721bcc3fdf10693e4157dcf9 (patch)
treea64967edc1467ad930704c0069913c92131071f5 /src
parent516c0a53384188f00b5df139b0840567dc8b8298 (diff)
downloadcoreboot-f02bf35e009e7e4c721bcc3fdf10693e4157dcf9.tar.xz
arch/x86/tables: Move max ACPI table size to Kconfig
The maximum ACPI table size is currently hardcoded to 144 KiB. When using QEMU with TPM enabled there is ~200 KiB of ACPI tables returned by the fw_cfg interface, so in order to allow this to be overridden by a mainboard move it to Kconfig. This is seen when using a TPM with qemu as it will hang when processing the fw_cfg tables. qemu-system-x86_64 \ -machine q35 -enable-kvm -vga virtio -serial stdio \ -drive 'id=hd,file=disk.bin' -bios coreboot.rom \ -chardev 'socket,id=swtpm,path=/tmp/swtpm/swtpm-sock' \ -tpmdev 'emulator,id=tpm0,chardev=swtpm' \ -device 'tpm-tis,tpmdev=tpm0' Change-Id: Ib5baa8fe12cb9027a340875f1ccf5fef6f9460bd Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39832 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src')
-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);