Duncan Laurie (dlaurie@chromium.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17136
-gerrit
commit 88be359ccb78e255d587cd019cd799d01767170b Author: Duncan Laurie dlaurie@chromium.org Date: Tue Oct 25 20:05:31 2016 -0700
skylake: Support for early I2C TPM driver
Add the SOC definition for acpi_get_gpe() so it can be used by the I2C TPM driver. Also add the I2C support code to verstage so it can get used by vboot.
BUG=chrome-os-partner:58666 TEST=boot with I2C TPM on skylake board
Change-Id: I553f00a6ec25955ecc18a7616d9c3e1e7cbbb8ca Signed-off-by: Duncan Laurie dlaurie@chromium.org --- src/soc/intel/skylake/Makefile.inc | 3 ++- src/soc/intel/skylake/pmutil.c | 20 ++++++++++++++++++++ 2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc index bf429ef..1714572 100644 --- a/src/soc/intel/skylake/Makefile.inc +++ b/src/soc/intel/skylake/Makefile.inc @@ -30,7 +30,8 @@ bootblock-y += tsc_freq.c verstage-y += flash_controller.c verstage-y += monotonic_timer.c verstage-y += pch.c -verstage-$(CONFIG_UART_DEBUG) += uart_debug.c +verstage-y += pmutil.c +verstage-y += bootblock/i2c.c
romstage-y += flash_controller.c romstage-y += gpio.c diff --git a/src/soc/intel/skylake/pmutil.c b/src/soc/intel/skylake/pmutil.c index 6ead7ed..203a430 100644 --- a/src/soc/intel/skylake/pmutil.c +++ b/src/soc/intel/skylake/pmutil.c @@ -356,6 +356,26 @@ u32 clear_gpe_status(void) gpe0_sts_3_bits); }
+/* Read and clear GPE status (defined in arch/acpi.h) */ +int acpi_get_gpe(int gpe) +{ + int bank; + uint32_t mask, sts; + + if (gpe < 0 || gpe > GPE0_WADT) + return -1; + + bank = gpe / 32; + mask = 1 << (gpe % 32); + + sts = inl(ACPI_BASE_ADDRESS + GPE0_STS(bank)); + if (sts & mask) { + outl(mask, ACPI_BASE_ADDRESS + GPE0_STS(bank)); + return 1; + } + return 0; +} + /* Enable all requested GPE */ void enable_all_gpe(u32 set1, u32 set2, u32 set3, u32 set4) {