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hpet: common ACPI generation

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HPET's min ticks (minimum time between events to avoid
losing interrupts) is chipset specific, so move it to
Kconfig.

Via also has a special base address, so move it as well.

Apart from these (and the base address was already #defined),
the table is very uniform.

Change-Id: I848a2e2b0b16021c7ee5ba99097fa6a5886c3286
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1562
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
This commit is contained in:
Patrick Georgi
2012-10-05 21:54:38 +02:00
parent ec2c18ee60
commit 9aeb69447d
36 changed files with 82 additions and 566 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/arch/x86/boot/acpi.c
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@ -36,6 +36,11 @@
#include <timestamp.h>
#endif
/* FIXME: Kconfig doesn't support overridable defaults :-( */
#ifndef CONFIG_HPET_MIN_TICKS
#define CONFIG_HPET_MIN_TICKS 0x1000
#endif
u8 acpi_checksum(u8 *table, u32 length)
{
u8 ret = 0;
@ -356,7 +361,6 @@ void acpi_create_slit(acpi_slit_t *slit)
/* http://www.intel.com/hardwaredesign/hpetspec_1.pdf */
void acpi_create_hpet(acpi_hpet_t *hpet)
{
#define HPET_ADDR 0xfed00000ULL
acpi_header_t *header = &(hpet->header);
acpi_addr_t *addr = &(hpet->addr);
@ -375,12 +379,12 @@ void acpi_create_hpet(acpi_hpet_t *hpet)
addr->space_id = 0; /* Memory */
addr->bit_width = 64;
addr->bit_offset = 0;
addr->addrl = HPET_ADDR & 0xffffffff;
addr->addrh = HPET_ADDR >> 32;
addr->addrl = CONFIG_HPET_ADDRESS & 0xffffffff;
addr->addrh = ((unsigned long long)CONFIG_HPET_ADDRESS) >> 32;
hpet->id = 0x102282a0; /* AMD! FIXME */
hpet->id = *(unsigned int*)CONFIG_HPET_ADDRESS;
hpet->number = 0;
hpet->min_tick = 4096;
hpet->min_tick = CONFIG_HPET_MIN_TICKS;
header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
}