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-rw-r--r--src/soc/intel/common/block/include/intelblocks/pcr.h45
-rw-r--r--src/soc/intel/common/block/pcr/Kconfig14
-rw-r--r--src/soc/intel/common/block/pcr/Makefile.inc4
-rw-r--r--src/soc/intel/common/block/pcr/pcr.c176
4 files changed, 239 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/pcr.h b/src/soc/intel/common/block/include/intelblocks/pcr.h
new file mode 100644
index 0000000000..cfe0015f70
--- /dev/null
+++ b/src/soc/intel/common/block/include/intelblocks/pcr.h
@@ -0,0 +1,45 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef SOC_INTEL_COMMON_BLOCK_PCR_H
+#define SOC_INTEL_COMMON_BLOCK_PCR_H
+
+/* Port Id lives in bits 23:16 and register offset lives in 15:0 of address. */
+#define PCR_PORTID_SHIFT 16
+
+#if !defined(__ACPI__)
+#include <stdint.h>
+
+uint32_t pcr_read32(uint8_t pid, uint16_t offset);
+uint16_t pcr_read16(uint8_t pid, uint16_t offset);
+uint8_t pcr_read8(uint8_t pid, uint16_t offset);
+void pcr_write32(uint8_t pid, uint16_t offset, uint32_t indata);
+void pcr_write16(uint8_t pid, uint16_t offset, uint16_t indata);
+void pcr_write8(uint8_t pid, uint16_t offset, uint8_t indata);
+void pcr_rmw32(uint8_t pid, uint16_t offset, uint32_t anddata,
+ uint32_t ordata);
+void pcr_rmw16(uint8_t pid, uint16_t offset, uint16_t anddata,
+ uint16_t ordata);
+void pcr_rmw8(uint8_t pid, uint16_t offset, uint8_t anddata,
+ uint8_t ordata);
+void pcr_or32(uint8_t pid, uint16_t offset, uint32_t ordata);
+void pcr_or16(uint8_t pid, uint16_t offset, uint16_t ordata);
+void pcr_or8(uint8_t pid, uint16_t offset, uint8_t ordata);
+
+/* Get the starting address of the port's registers. */
+void *pcr_reg_address(uint8_t pid, uint16_t offset);
+#endif /* if !defined(__ACPI__) */
+
+#endif /* SOC_INTEL_COMMON_BLOCK_PCR_H */
diff --git a/src/soc/intel/common/block/pcr/Kconfig b/src/soc/intel/common/block/pcr/Kconfig
new file mode 100644
index 0000000000..be038383ab
--- /dev/null
+++ b/src/soc/intel/common/block/pcr/Kconfig
@@ -0,0 +1,14 @@
+config SOC_INTEL_COMMON_BLOCK_PCR
+ bool
+ help
+ Intel Processor common Private configuration registers (PCR)
+
+config PCR_COMMON_IOSF_1_0
+ bool
+ depends on SOC_INTEL_COMMON_BLOCK_PCR
+ help
+ The mapping of addresses via the SBREG_BAR assumes the IOSF-SB
+ agents are using 32-bit aligned accesses for their configuration
+ registers. For IOSF versions greater than 1_0, IOSF-SB
+ agents can use any access (8/16/32 bit aligned) for their
+ configuration registers
diff --git a/src/soc/intel/common/block/pcr/Makefile.inc b/src/soc/intel/common/block/pcr/Makefile.inc
new file mode 100644
index 0000000000..c64fe7a57a
--- /dev/null
+++ b/src/soc/intel/common/block/pcr/Makefile.inc
@@ -0,0 +1,4 @@
+bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_PCR) += pcr.c
+romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_PCR) += pcr.c
+ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_PCR) += pcr.c
+smm-$(CONFIG_SOC_INTEL_COMMON_BLOCK_PCR) += pcr.c
diff --git a/src/soc/intel/common/block/pcr/pcr.c b/src/soc/intel/common/block/pcr/pcr.c
new file mode 100644
index 0000000000..6560a4b337
--- /dev/null
+++ b/src/soc/intel/common/block/pcr/pcr.c
@@ -0,0 +1,176 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/io.h>
+#include <assert.h>
+#include <intelblocks/pcr.h>
+#include <soc/pcr_ids.h>
+
+static void *__pcr_reg_address(uint8_t pid, uint16_t offset)
+{
+ uintptr_t reg_addr;
+
+ /* Create an address based off of port id and offset. */
+ reg_addr = CONFIG_PCR_BASE_ADDRESS;
+ reg_addr += ((uintptr_t)pid) << PCR_PORTID_SHIFT;
+ reg_addr += (uintptr_t)offset;
+
+ return (void *)reg_addr;
+}
+
+void *pcr_reg_address(uint8_t pid, uint16_t offset)
+{
+ if (IS_ENABLED(CONFIG_PCR_COMMON_IOSF_1_0))
+ assert(IS_ALIGNED(offset, sizeof(uint32_t)));
+
+ return __pcr_reg_address(pid, offset);
+}
+
+/*
+ * The mapping of addresses via the SBREG_BAR assumes the IOSF-SB
+ * agents are using 32-bit aligned accesses for their configuration
+ * registers. For IOSF versions greater than 1_0, IOSF-SB
+ * agents can use any access (8/16/32 bit aligned) for their
+ * configuration registers
+ */
+static inline void check_pcr_offset_align(uint16_t offset, size_t size)
+{
+ const size_t align = IS_ENABLED(CONFIG_PCR_COMMON_IOSF_1_0) ?
+ sizeof(uint32_t) : size;
+
+ assert(IS_ALIGNED(offset, align));
+}
+
+uint32_t pcr_read32(uint8_t pid, uint16_t offset)
+{
+ /* Ensure the PCR offset is corretcly aligned. */
+ assert(IS_ALIGNED(offset, sizeof(uint32_t)));
+
+ return read32(__pcr_reg_address(pid, offset));
+}
+
+uint16_t pcr_read16(uint8_t pid, uint16_t offset)
+{
+ /* Ensure the PCR offset is corretcly aligned. */
+ check_pcr_offset_align(offset, sizeof(uint16_t));
+
+ return read16(__pcr_reg_address(pid, offset));
+}
+
+uint8_t pcr_read8(uint8_t pid, uint16_t offset)
+{
+ /* Ensure the PCR offset is corretcly aligned. */
+ check_pcr_offset_align(offset, sizeof(uint8_t));
+
+ return read8(__pcr_reg_address(pid, offset));
+}
+
+/*
+ * After every write one needs to perform a read an innocuous register to
+ * ensure the writes are completed for certain ports. This is done for
+ * all ports so that the callers don't need the per-port knowledge for
+ * each transaction.
+ */
+static inline void write_completion(uint8_t pid, uint16_t offset)
+{
+ read32(__pcr_reg_address(pid, ALIGN_DOWN(offset, sizeof(uint32_t))));
+}
+
+void pcr_write32(uint8_t pid, uint16_t offset, uint32_t indata)
+{
+ /* Ensure the PCR offset is corretcly aligned. */
+ assert(IS_ALIGNED(offset, sizeof(indata)));
+
+ write32(__pcr_reg_address(pid, offset), indata);
+ /* Ensure the writes complete. */
+ write_completion(pid, offset);
+}
+
+void pcr_write16(uint8_t pid, uint16_t offset, uint16_t indata)
+{
+ /* Ensure the PCR offset is corretcly aligned. */
+ check_pcr_offset_align(offset, sizeof(uint16_t));
+
+ write16(__pcr_reg_address(pid, offset), indata);
+ /* Ensure the writes complete. */
+ write_completion(pid, offset);
+}
+
+void pcr_write8(uint8_t pid, uint16_t offset, uint8_t indata)
+{
+ /* Ensure the PCR offset is corretcly aligned. */
+ check_pcr_offset_align(offset, sizeof(uint8_t));
+
+ write8(__pcr_reg_address(pid, offset), indata);
+ /* Ensure the writes complete. */
+ write_completion(pid, offset);
+}
+
+void pcr_rmw32(uint8_t pid, uint16_t offset, uint32_t anddata, uint32_t ordata)
+{
+ uint32_t data32;
+
+ data32 = pcr_read32(pid, offset);
+ data32 &= anddata;
+ data32 |= ordata;
+ pcr_write32(pid, offset, data32);
+}
+
+void pcr_rmw16(uint8_t pid, uint16_t offset, uint16_t anddata, uint16_t ordata)
+{
+ uint16_t data16;
+
+ data16 = pcr_read16(pid, offset);
+ data16 &= anddata;
+ data16 |= ordata;
+ pcr_write16(pid, offset, data16);
+}
+
+void pcr_rmw8(uint8_t pid, uint16_t offset, uint8_t anddata, uint8_t ordata)
+{
+ uint8_t data8;
+
+ data8 = pcr_read8(pid, offset);
+ data8 &= anddata;
+ data8 |= ordata;
+ pcr_write8(pid, offset, data8);
+}
+
+void pcr_or32(uint8_t pid, uint16_t offset, uint32_t ordata)
+{
+ uint32_t data32;
+
+ data32 = pcr_read32(pid, offset);
+ data32 |= ordata;
+ pcr_write32(pid, offset, data32);
+}
+
+void pcr_or16(uint8_t pid, uint16_t offset, uint16_t ordata)
+{
+ uint16_t data16;
+
+ data16 = pcr_read16(pid, offset);
+ data16 |= ordata;
+ pcr_write16(pid, offset, data16);
+}
+
+void pcr_or8(uint8_t pid, uint16_t offset, uint8_t ordata)
+{
+ uint8_t data8;
+
+ data8 = pcr_read8(pid, offset);
+ data8 |= ordata;
+ pcr_write8(pid, offset, data8);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 10:17:46 +0000