From cec6dc4c15f7c2bb7c245c76e61f2ee41c3fa649 Mon Sep 17 00:00:00 2001 From: Patrick Georgi Date: Fri, 24 Apr 2009 06:28:48 +0000 Subject: Change the behaviour of the ACPI generating code so it only writes at most one full ACPI table. In the cases where both HAVE_LOW_TABLES and HAVE_HIGH_TABLES are enabled, the table is written to high memory, and an RSDP is written to the low memory that points to the high mem one. All other cases work exactly the same way as before. Signed-off-by: Patrick Georgi Acked-by: Myles Watson git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4202 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/arch/i386/boot/tables.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'src/arch/i386') diff --git a/src/arch/i386/boot/tables.c b/src/arch/i386/boot/tables.c index 470afe82c1..6959ae3036 100644 --- a/src/arch/i386/boot/tables.c +++ b/src/arch/i386/boot/tables.c @@ -112,15 +112,22 @@ struct lb_memory *write_tables(void) /* write them in the rom area because DSDT can be large (8K on epia-m) which * pushes coreboot table out of first 4K if set up in low table area */ -#if HAVE_LOW_TABLES == 1 - rom_table_end = write_acpi_tables(rom_table_end); - rom_table_end = (rom_table_end+1023) & ~1023; -#endif #if HAVE_HIGH_TABLES == 1 + unsigned long high_rsdp=ALIGN(high_table_end, 16); if (high_tables_base) { high_table_end = write_acpi_tables(high_table_end); high_table_end = (high_table_end+1023) & ~1023; } +#if HAVE_LOW_TABLES == 1 + unsigned long rsdt_location=(unsigned long*)(((acpi_rsdp_t*)high_rsdp)->rsdt_address); + acpi_write_rsdp(rom_table_end, rsdt_location); + rom_table_end = ALIGN(ALIGN(rom_table_end, 16) + sizeof(acpi_rsdp_t), 16); +#endif +#else +#if HAVE_LOW_TABLES == 1 + rom_table_end = write_acpi_tables(rom_table_end); + rom_table_end = (rom_table_end+1023) & ~1023; +#endif #endif /* copy the smp block to address 0 */ post_code(0x96); -- cgit v1.2.3