Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4918
-gerrit
commit 8f5d69cdf574fb49114764c2e2ca56ee1f623e21 Author: Aaron Durbin adurbin@chromium.org Date: Wed Oct 30 15:25:42 2013 -0500
baytrail: add GNVS to cbmem and set acpi_slp_type
The ACPI code was previously complaining about not being able to find the GNVS area: 'ACPI: Could not find CBMEM GNVS'. Fix this by adding GNVS area early in start up. This is also the appropriate place to set the acpi_slp_type variable to indicate an S3 resume or not.
BUG=chrome-os-partner:22867 BUG=chrome-os-partner:23505 BRANCH=None TEST=Built and booted through depthcharge. Noted cbmem has 'ACPI GNVS' entry.
Change-Id: Ifbca3dd390ebe573730ee204ca4c2f19626dd6b1 Signed-off-by: Aaron Durbin adurbin@chromium.org Reviewed-on: https://chromium-review.googlesource.com/174647 Reviewed-by: Duncan Laurie dlaurie@chromium.org --- src/soc/intel/baytrail/ramstage.c | 36 ++++++++++++++++++++++++++++++++++-- 1 file changed, 34 insertions(+), 2 deletions(-)
diff --git a/src/soc/intel/baytrail/ramstage.c b/src/soc/intel/baytrail/ramstage.c index 896ecfe..ab29190 100644 --- a/src/soc/intel/baytrail/ramstage.c +++ b/src/soc/intel/baytrail/ramstage.c @@ -18,6 +18,8 @@ */
#include <arch/cpu.h> +#include <arch/acpi.h> +#include <cbmem.h> #include <console/console.h> #include <cpu/intel/microcode.h> #include <cpu/x86/cr.h> @@ -25,14 +27,16 @@ #include <device/device.h> #include <device/pci_def.h> #include <device/pci_ops.h> +#include <romstage_handoff.h> #include <stdlib.h>
-#include <baytrail/pattrs.h> +#include <baytrail/gpio.h> #include <baytrail/lpc.h> #include <baytrail/msr.h> +#include <baytrail/nvs.h> +#include <baytrail/pattrs.h> #include <baytrail/pci_devs.h> #include <baytrail/ramstage.h> -#include <baytrail/gpio.h>
/* Global PATTRS */ DEFINE_PATTRS; @@ -103,6 +107,31 @@ static void fill_in_pattrs(void) fill_in_msr(&attrs->iacore_vids, MSR_IACORE_VIDS); }
+static inline void set_acpi_sleep_type(int val) +{ +#if CONFIG_HAVE_ACPI_RESUME + acpi_slp_type = val; +#endif +} + +static void s3_resume_prepare(void) +{ + global_nvs_t *gnvs; + struct romstage_handoff *romstage_handoff; + + gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(global_nvs_t)); + + romstage_handoff = cbmem_find(CBMEM_ID_ROMSTAGE_INFO); + if (romstage_handoff == NULL || romstage_handoff->s3_resume == 0) { + if (gnvs != NULL) { + memset(gnvs, 0, sizeof(global_nvs_t)); + } + set_acpi_sleep_type(0); + return; + } + + set_acpi_sleep_type(3); +}
void baytrail_init_pre_device(void) { @@ -119,4 +148,7 @@ void baytrail_init_pre_device(void) /* Get GPIO initial states from mainboard */ config = mainboard_get_gpios(); setup_soc_gpios(config); + + /* Indicate S3 resume to rest of ramstage. */ + s3_resume_prepare(); }