sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

soc/intel/apollolake: enable RTC

Browse Source 
BUG=none
TEST=Boot to OS and verfiy if rtc0 device is created
under /sys/class/rtc/

Change-Id: Idec569255859816fda467bb42a215c00f7c0e16e
Signed-off-by: Jagadish Krishnamoorthy <jagadish.krishnamoorthy@intel.com>
Reviewed-on: https://review.coreboot.org/14883
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Jagadish Krishnamoorthy 2016-05-17 18:06:49 -07:00 committed by Martin Roth
parent 1ac194e14a
commit b6b233a6e5
1 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/soc/intel/apollolake/lpc.c
View File

@ -15,13 +15,17 @@
* GNU General Public License for more details. * GNU General Public License for more details.
*/ */
#include <cbmem.h>
#include <console/console.h> #include <console/console.h>
#include <device/device.h> #include <device/device.h>
#include <device/pci.h> #include <device/pci.h>
#include <device/pci_ids.h> #include <device/pci_ids.h>
#include <pc80/mc146818rtc.h>
#include <soc/acpi.h> #include <soc/acpi.h>
#include <soc/lpc.h> #include <soc/lpc.h>
#include <soc/pci_ids.h> #include <soc/pci_ids.h>
#include <soc/pm.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "chip.h" #include "chip.h"
@ -43,6 +47,25 @@
* opens up IO and memory windows as needed. * opens up IO and memory windows as needed.
*/ */
static void rtc_init(void)
{
int rtc_fail;
const struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE);
if (!ps) {
printk(BIOS_ERR, "Could not find power state in cbmem, RTC init aborted\n");
return;
}
rtc_fail = !!(ps->gen_pmcon1 & RPS);
/* Ensure the date is set including century byte. */
cmos_check_update_date();
if (IS_ENABLED(CONFIG_CHROMEOS_VBNV_CMOS))
init_vbnv_cmos(rtc_fail);
else
cmos_init(rtc_fail);
}
static void lpc_init(struct device *dev) static void lpc_init(struct device *dev)
{ {
uint8_t scnt; uint8_t scnt;
@ -61,6 +84,9 @@ static void lpc_init(struct device *dev)
else if (cfg->serirq_mode == SERIRQ_CONTINUOUS) else if (cfg->serirq_mode == SERIRQ_CONTINUOUS)
scnt |= SCNT_EN | SCNT_MODE; scnt |= SCNT_EN | SCNT_MODE;
pci_write_config8(dev, REG_SERIRQ_CTL, scnt); pci_write_config8(dev, REG_SERIRQ_CTL, scnt);
/* Initialize RTC */
rtc_init();
} }
static void soc_lpc_add_io_resources(device_t dev) static void soc_lpc_add_io_resources(device_t dev)