[PATCH v2 1/1] x86: all firmware tables must be paragraph aligned

[Heinrich Schuchardt]

On qemu-x86_64_defconfig the following was observed:

    => efidebug tables
    00000000000f0074  eb9d2d31-2d88-11d3-9a16-0090273fc14d  SMBIOS table

The SMBIOS configuration table does not point to a paragraph-aligned
(16 byte aligned) address. The reason is that in write_tables() rom_addr is
not aligned and copied to gd->arch.smbios_start.

The Simple Firmware Interface requires that the SFI table is paragraph-
aligned but our code does not guarantee this.

As all tables written in write_tables() must be paragraph-aligned, we
should implement the address rounding in write_tables() and not in table
specific routines like copy_pirq_routing_table().

Add paragraph-alignment in write_tables().

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---
v2:
	explain the term paragraph-aligned
---
 arch/x86/lib/tables.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/lib/tables.c b/arch/x86/lib/tables.c
index 5b5070f7ca..89d4d30a6a 100644
--- a/arch/x86/lib/tables.c
+++ b/arch/x86/lib/tables.c
@@ -97,6 +97,8 @@ int write_tables(void)
 		int size = table->size ? : CONFIG_ROM_TABLE_SIZE;
 		u32 rom_table_end;
 
+		rom_addr = ALIGN(rom_addr, 16);
+
 		if (!strcmp("smbios", table->name))
 			gd->arch.smbios_start = rom_addr;
 
-- 
2.43.0