diff options
| author | Jagadish Krishnamoorthy <jagadish.krishnamoorthy@intel.com> | 2016-05-17 18:06:49 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-05-26 23:52:25 +0200 |
| commit | b6b233a6e545e9da8ba1372979df69cf2bdc007f (patch) | |
| tree | a636faa80b45d10f510dae7afce1885bfe62b89d /src/soc | |
| parent | 1ac194e14a90563635b0a0a6a82ada87dcb8dbde (diff) | |
soc/intel/apollolake: enable RTC
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>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/apollolake/lpc.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/lpc.c b/src/soc/intel/apollolake/lpc.c index 48dfb1fe3d..cc4de886e3 100644 --- a/src/soc/intel/apollolake/lpc.c +++ b/src/soc/intel/apollolake/lpc.c @@ -15,13 +15,17 @@ * GNU General Public License for more details. */ +#include <cbmem.h> #include <console/console.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> +#include <pc80/mc146818rtc.h> #include <soc/acpi.h> #include <soc/lpc.h> #include <soc/pci_ids.h> +#include <soc/pm.h> +#include <vendorcode/google/chromeos/chromeos.h> #include "chip.h" @@ -43,6 +47,25 @@ * 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) { uint8_t scnt; @@ -61,6 +84,9 @@ static void lpc_init(struct device *dev) else if (cfg->serirq_mode == SERIRQ_CONTINUOUS) scnt |= SCNT_EN | SCNT_MODE; pci_write_config8(dev, REG_SERIRQ_CTL, scnt); + + /* Initialize RTC */ + rtc_init(); } static void soc_lpc_add_io_resources(device_t dev) |