From 32960e30f08f678355b20b5702e8028351a7275e Mon Sep 17 00:00:00 2001 From: Edward O'Callaghan Date: Sun, 23 Nov 2014 17:38:52 +1100 Subject: mainboard/lenovo/g505s: New port Richland APU A10-5750M MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Richland APU A10-5750M 8GB RAM 4MB Flash Boots to working Linux with SeaBIOS payload. S3 works with Linux 3.16.3-2 Debian Jessie. Change-Id: I5d05d1b31400fdb9e41c2e011c5b0bf9986fe970 Signed-off-by: Edward O'Callaghan Signed-off-by: Damien Zammit Reviewed-on: http://review.coreboot.org/7560 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki --- src/mainboard/lenovo/g505s/mainboard_smi.c | 107 +++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 src/mainboard/lenovo/g505s/mainboard_smi.c (limited to 'src/mainboard/lenovo/g505s/mainboard_smi.c') diff --git a/src/mainboard/lenovo/g505s/mainboard_smi.c b/src/mainboard/lenovo/g505s/mainboard_smi.c new file mode 100644 index 0000000000..386d3900d2 --- /dev/null +++ b/src/mainboard/lenovo/g505s/mainboard_smi.c @@ -0,0 +1,107 @@ +/* + * SMI handler -- mostly takes care of SMIs from the EC + * + * Copyright (C) 2014 Alexandru Gagniuc + * Subject to the GNU GPL v2, or (at your option) any later version. + */ +#include "ec.h" + +#include +#include +#include +#include +#include +#include +#include + +#define ACPI_PM1_CNT_SLEEP(state) ((1 << 13) | (state & 0x7) << 10) + +enum sleep_states { + S0 = 0, + S1 = 1, + S3 = 3, + S4 = 4, + S5 = 5, +}; + +enum ec_smi_event { + EC_SMI_EVENT_IDLE = 0x80, + EC_SMI_BATTERY_LOW = 0xb3, +}; + +/* Tell EC to operate in APM mode. Events generate SMIs instead of SCIs */ +static void ec_enter_apm_mode(void) +{ + ec_kbc_write_cmd(0x59); + ec_kbc_write_ib(0xE9); +} +/* Tell EC to operate in ACPI mode, thus generating SCIs on events, not SMIs */ +static void ec_enter_acpi_mode(void) +{ + ec_kbc_write_cmd(0x59); + ec_kbc_write_ib(0xE8); +} + +static uint8_t ec_get_smi_event(void) +{ + ec_kbc_write_cmd(0x56); + return ec_kbc_read_ob(); +} + +static void ec_process_smi(uint8_t src) +{ + /* Reading the SMI source satisfies the EC in terms of responding to + * the event, regardless of whether we take an action or not. + */ + + switch (src) { + case EC_SMI_BATTERY_LOW: + printk(BIOS_DEBUG, "Battery low. Shutting down\n"); + outl(ACPI_PM1_CNT_SLEEP(S5), ACPI_PM1_CNT_BLK); + break; + default: + printk(BIOS_DEBUG, "EC_SMI event 0x%x\n", src); + } +} + +static void handle_ec_smi(void) +{ + uint8_t src; + + while ((src = ec_get_smi_event()) != EC_SMI_EVENT_IDLE) + ec_process_smi(src); +} + +static void handle_lid_smi(void) +{ + /* Only triggered in non-ACPI mode on lid close. */ + outl(ACPI_PM1_CNT_SLEEP(S4), ACPI_PM1_CNT_BLK); +} + +int mainboard_smi_apmc(uint8_t data) +{ + switch (data) { + case ACPI_SMI_CMD_ENABLE: + printk(BIOS_DEBUG, "Enable ACPI mode\n"); + ec_enter_acpi_mode(); + hudson_disable_gevent_smi(EC_LID_GEVENT); + break; + case ACPI_SMI_CMD_DISABLE: + printk(BIOS_DEBUG, "Disable ACPI mode\n"); + ec_enter_apm_mode(); + hudson_configure_gevent_smi(EC_LID_GEVENT, SMI_MODE_SMI, + SMI_LVL_LOW); + break; + default: + printk(BIOS_DEBUG, "Unhandled ACPI command: 0x%x\n", data); + } + return 0; +} + +void mainboard_smi_gpi(uint32_t gpi_sts) +{ + if (gpi_sts & (1 << EC_SMI_GEVENT)) + handle_ec_smi(); + if (gpi_sts & (1 << EC_LID_GEVENT)) + handle_lid_smi(); +} -- cgit v1.2.3