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x86: Make table address selectable

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Some firmwares might have another window for generated tables.

So, introduce two configuration options to select start address and
maximum length for the generated tables.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Andy Shevchenko 2017-07-28 20:02:15 +03:00 committed by Bin Meng
parent 167a40166b
commit c3df28f6e2
2 changed files with 15 additions and 7 deletions
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13
arch/x86/Kconfig
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@ -542,6 +542,19 @@ config VGA_BIOS_ADDR
address of 0xfff90000 indicates that the image will be put at offset
0x90000 from the beginning of a 1MB flash device.
config ROM_TABLE_ADDR
hex
default 0xf0000
help
All x86 tables happen to like the address range from 0x0f0000
to 0x100000. We use 0xf0000 as the starting address to store
those tables, including PIRQ routing table, Multi-Processor
table and ACPI table.
config ROM_TABLE_SIZE
hex
default 0x10000
menu "System tables"
depends on !EFI && !SYS_COREBOOT

9
arch/x86/include/asm/tables.h
View file

@ -9,13 +9,8 @@
#include <tables_csum.h>
/*
* All x86 tables happen to like the address range from 0xf0000 to 0x100000.
* We use 0xf0000 as the starting address to store those tables, including
* PIRQ routing table, Multi-Processor table and ACPI table.
*/
#define ROM_TABLE_ADDR 0xf0000
#define ROM_TABLE_END 0xfffff
#define ROM_TABLE_ADDR CONFIG_ROM_TABLE_ADDR
#define ROM_TABLE_END (CONFIG_ROM_TABLE_ADDR + CONFIG_ROM_TABLE_SIZE - 1)
#define ROM_TABLE_ALIGN 1024