diff options
| author | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2014-04-14 16:35:34 -0500 |
|---|---|---|
| committer | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2014-04-17 04:42:44 +0200 |
| commit | 288c95882d701bb09c77c8ad1a8904673503656c (patch) | |
| tree | cb3e8e448e1de1cec866ff0299a95c14042100a4 /src/southbridge/amd/agesa/hudson/smi.c | |
| parent | 22d90e34f95307d143249b53f3bb48f0a674ecbd (diff) | |
southbridge/hudson: Add support for ACPI enable/disable via SMI
This enables the ACPI SMI command port in the FADT table, and sets up
the hardware accordingly. If we have SMI enabled, then we don't set
the SCI_EN bit at boot, causing the OS to send the ACPI_ENABLE
command, as required by the ACPI spec. This gives us a chance to hook
into the mainboard_smi_apmc() handler.
Change-Id: Ib4c63d55b3132578dcae48bfe2092d4ea35821dd
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5511
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@gmail.com>
Diffstat (limited to 'src/southbridge/amd/agesa/hudson/smi.c')
| -rw-r--r-- | src/southbridge/amd/agesa/hudson/smi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/southbridge/amd/agesa/hudson/smi.c b/src/southbridge/amd/agesa/hudson/smi.c index bb5e192f53..168f2acb4a 100644 --- a/src/southbridge/amd/agesa/hudson/smi.c +++ b/src/southbridge/amd/agesa/hudson/smi.c @@ -10,6 +10,8 @@ #include <console/console.h> #include <cpu/cpu.h> +#define HUDSON_SMI_ACPI_COMMAND 75 + void smm_setup_structures(void *gnvs, void *tcg, void *smi1) { printk(BIOS_DEBUG, "smm_setup_structures STUB!!!\n"); @@ -58,3 +60,9 @@ void hudson_enable_gevent_smi(uint8_t gevent) /* SMI0 source is GEVENT0 and so on */ enable_smi(gevent); } + +/** Enable SMIs on writes to ACPI SMI command port */ +void hudson_enable_acpi_cmd_smi(void) +{ + enable_smi(HUDSON_SMI_ACPI_COMMAND); +} |