From f02bf35e009e7e4c721bcc3fdf10693e4157dcf9 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Tue, 17 Mar 2020 18:32:54 -0700 Subject: 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/39832 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/arch/x86/Kconfig | 6 ++++++ src/arch/x86/tables.c | 7 +++---- 2 files changed, 9 insertions(+), 4 deletions(-) (limited to 'src') 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); -- cgit v1.2.3