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authorMaulik V Vaghela <maulik.v.vaghela@intel.com>2018-07-17 21:52:27 +0530
committerMartin Roth <martinroth@google.com>2018-08-30 14:47:04 +0000
commit9b08a189667b74c220b5359755dc88cdfc08c950 (patch)
treed76543b2a7173aa4d4506581a03f0006537ef2fa /src/soc/intel
parent58344fc2e7d9256524997b5aecd6130534c6702c (diff)
soc/intel/cannonlake: Update PMC base address for CNP H and LP
PMC base address is different for CNP LP pch and CNP H pch. Added logic to determine PMC base addrress dynamically based on PCH ID. BUG=none BRANCH=none TEST=Boot Coffeelake U RVP board and check if PMC base address is determined correctly. Change-Id: I833395260e8fb631823bd03192a092df323250fa Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-on: https://review.coreboot.org/27523 Reviewed-by: Naresh Solanki <naresh.solanki@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel')
-rw-r--r--src/soc/intel/cannonlake/bootblock/pch.c42
-rw-r--r--src/soc/intel/cannonlake/include/soc/lpc.h12
-rw-r--r--src/soc/intel/cannonlake/lpc.c18
3 files changed, 64 insertions, 8 deletions
diff --git a/src/soc/intel/cannonlake/bootblock/pch.c b/src/soc/intel/cannonlake/bootblock/pch.c
index 033f69aaf5..3ef084a858 100644
--- a/src/soc/intel/cannonlake/bootblock/pch.c
+++ b/src/soc/intel/cannonlake/bootblock/pch.c
@@ -14,7 +14,9 @@
* GNU General Public License for more details.
*/
+#include <console/console.h>
#include <device/device.h>
+#include <device/pci_ids.h>
#include <intelblocks/fast_spi.h>
#include <intelblocks/gspi.h>
#include <intelblocks/lpc_lib.h>
@@ -27,12 +29,15 @@
#include <soc/iomap.h>
#include <soc/lpc.h>
#include <soc/p2sb.h>
+#include <soc/pch.h>
#include <soc/pci_devs.h>
#include <soc/pcr_ids.h>
#include <soc/pm.h>
#include <soc/smbus.h>
-#define PCR_PSF3_TO_SHDW_PMC_REG_BASE 0x1400
+#define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_LP 0x1400
+#define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_H 0x0980
+
#define PCR_PSFX_TO_SHDW_BAR0 0
#define PCR_PSFX_TO_SHDW_BAR1 0x4
#define PCR_PSFX_TO_SHDW_BAR2 0x8
@@ -51,12 +56,28 @@
#define PCR_DMI_LPCIOD 0x2770
#define PCR_DMI_LPCIOE 0x2774
+static uint32_t get_pmc_reg_base(void)
+{
+ uint8_t pch_series;
+
+ pch_series = get_pch_series();
+
+ if (pch_series == PCH_H)
+ return PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_H;
+ else if (pch_series == PCH_LP)
+ return PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_LP;
+ else
+ return 0;
+}
+
static void soc_config_pwrmbase(void)
{
uint32_t reg32;
- /* Assign Resources to PWRMBASE */
- /* Clear BIT 1-2 Command Register */
+ /*
+ * Assign Resources to PWRMBASE
+ * Clear BIT 1-2 Command Register
+ */
reg32 = pci_read_config32(PCH_DEV_PMC, PCI_COMMAND);
reg32 &= ~(PCI_COMMAND_MEMORY);
pci_write_config32(PCH_DEV_PMC, PCI_COMMAND, reg32);
@@ -92,22 +113,27 @@ void bootblock_pch_early_init(void)
static void soc_config_acpibase(void)
{
uint32_t pmc_reg_value;
+ uint32_t pmc_base_reg;
+
+ pmc_base_reg = get_pmc_reg_base();
+ if (!pmc_base_reg)
+ die("Invalid PMC base address\n");
- pmc_reg_value = pcr_read32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE +
- PCR_PSFX_TO_SHDW_BAR4);
+ pmc_reg_value = pcr_read32(PID_PSF3, pmc_base_reg +
+ PCR_PSFX_TO_SHDW_BAR4);
if (pmc_reg_value != 0xFFFFFFFF)
{
/* Disable Io Space before changing the address */
- pcr_rmw32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE +
+ pcr_rmw32(PID_PSF3, pmc_base_reg +
PCR_PSFX_T0_SHDW_PCIEN,
~PCR_PSFX_TO_SHDW_PCIEN_IOEN, 0);
/* Program ABASE in PSF3 PMC space BAR4*/
- pcr_write32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE +
+ pcr_write32(PID_PSF3, pmc_base_reg +
PCR_PSFX_TO_SHDW_BAR4,
ACPI_BASE_ADDRESS);
/* Enable IO Space */
- pcr_rmw32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE +
+ pcr_rmw32(PID_PSF3, pmc_base_reg +
PCR_PSFX_T0_SHDW_PCIEN,
~0, PCR_PSFX_TO_SHDW_PCIEN_IOEN);
}
diff --git a/src/soc/intel/cannonlake/include/soc/lpc.h b/src/soc/intel/cannonlake/include/soc/lpc.h
index 3ea9be9203..a4e42bddf3 100644
--- a/src/soc/intel/cannonlake/include/soc/lpc.h
+++ b/src/soc/intel/cannonlake/include/soc/lpc.h
@@ -52,4 +52,16 @@
#define LPC_BC_EISS (1 << 5) /* EISS */
#define PCCTL 0xE0 /* PCI Clock Control */
#define CLKRUN_EN (1 << 0)
+
+/*
+ * This function will help to differentiate between 2 PCH on single type of soc.
+ * Since same soc may have LP series pch or H series PCH, we need to
+ * differentiate by reading upper 8 bits of PCH device ids.
+ *
+ * Return:
+ * Return PCH_LP or PCH_H macro in case of respective device ID found.
+ * PCH_UNKNOWN_SERIES in case of invalid device ID.
+ */
+uint8_t get_pch_series(void);
+
#endif
diff --git a/src/soc/intel/cannonlake/lpc.c b/src/soc/intel/cannonlake/lpc.c
index d399d1bcaf..84a2138efd 100644
--- a/src/soc/intel/cannonlake/lpc.c
+++ b/src/soc/intel/cannonlake/lpc.c
@@ -68,6 +68,24 @@ void soc_setup_dmi_pcr_io_dec(uint32_t *gen_io_dec)
pcr_write32(PID_DMI, PCR_DMI_LPCLGIR4, gen_io_dec[3]);
}
+uint8_t get_pch_series(void)
+{
+ uint16_t lpc_did_hi_byte;
+
+ /*
+ * Fetch upper 8 bits on LPC device ID to determine PCH type
+ * Adding 1 to the offset to fetch upper 8 bits
+ */
+ lpc_did_hi_byte = pci_read_config8(PCH_DEV_LPC, PCI_DEVICE_ID + 1);
+
+ if (lpc_did_hi_byte == 0x9D)
+ return PCH_LP;
+ else if (lpc_did_hi_byte == 0xA3)
+ return PCH_H;
+ else
+ return PCH_UNKNOWN_SERIES;
+}
+
#if ENV_RAMSTAGE
static void soc_mirror_dmi_pcr_io_dec(void)
{