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authorLeah Rowe <leah@libreboot.org>2023-09-04 02:36:41 +0100
committerLeah Rowe <leah@libreboot.org>2023-09-04 02:47:25 +0100
commitda3c9bb3c5c3b1f2e6e67a3695ce39b17bf68d5b (patch)
treeb81cdd418a4906c846800a8c5094b312e74f57df /resources/coreboot/haswell/patches/0003-haswell-lynxpoint-Add-native-DMI-init.patch
parenta05010503f9a748943033d1fc40e36625e72dcbb (diff)
merge config/ and resources/
Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'resources/coreboot/haswell/patches/0003-haswell-lynxpoint-Add-native-DMI-init.patch')
-rw-r--r--resources/coreboot/haswell/patches/0003-haswell-lynxpoint-Add-native-DMI-init.patch615
1 files changed, 0 insertions, 615 deletions
diff --git a/resources/coreboot/haswell/patches/0003-haswell-lynxpoint-Add-native-DMI-init.patch b/resources/coreboot/haswell/patches/0003-haswell-lynxpoint-Add-native-DMI-init.patch
deleted file mode 100644
index 4e70407c..00000000
--- a/resources/coreboot/haswell/patches/0003-haswell-lynxpoint-Add-native-DMI-init.patch
+++ /dev/null
@@ -1,615 +0,0 @@
-From 6ec71c6df97eded010e96c4ea2bd37cc6a13849d Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Fri, 6 May 2022 21:56:48 +0200
-Subject: [PATCH 03/26] haswell/lynxpoint: Add native DMI init
-
-Implement native DMI init for Haswell and Lynx Point. This is only
-needed on non-ULT platforms, and only when MRC.bin is not used.
-
-TEST=Verify DMI initialises correctly on Asrock B85M Pro4.
-
-Change-Id: I5fb1a2adc4ffbf0ebbf0d2d3a444055c53765faa
-Signed-off-by: Angel Pons <th3fanbus@gmail.com>
----
- src/northbridge/intel/haswell/Makefile.inc | 1 +
- src/northbridge/intel/haswell/early_dmi.c | 96 ++++++++++++
- src/northbridge/intel/haswell/early_pcie.c | 121 ++++++++++++++
- src/northbridge/intel/haswell/haswell.h | 3 +
- .../haswell/native_raminit/raminit_native.c | 15 ++
- src/northbridge/intel/haswell/vcu_mailbox.c | 147 ++++++++++++++++++
- src/northbridge/intel/haswell/vcu_mailbox.h | 16 ++
- src/southbridge/intel/lynxpoint/Makefile.inc | 2 +
- .../intel/lynxpoint/early_pch_native.c | 52 +++++++
- src/southbridge/intel/lynxpoint/pch.h | 20 ++-
- 10 files changed, 472 insertions(+), 1 deletion(-)
- create mode 100644 src/northbridge/intel/haswell/early_dmi.c
- create mode 100644 src/northbridge/intel/haswell/early_pcie.c
- create mode 100644 src/northbridge/intel/haswell/vcu_mailbox.c
- create mode 100644 src/northbridge/intel/haswell/vcu_mailbox.h
- create mode 100644 src/southbridge/intel/lynxpoint/early_pch_native.c
-
-diff --git a/src/northbridge/intel/haswell/Makefile.inc b/src/northbridge/intel/haswell/Makefile.inc
-index 329f1f7ffe..df0b097296 100644
---- a/src/northbridge/intel/haswell/Makefile.inc
-+++ b/src/northbridge/intel/haswell/Makefile.inc
-@@ -20,6 +20,7 @@ romstage-y += report_platform.c
- postcar-y += memmap.c
-
- ifeq ($(CONFIG_USE_NATIVE_RAMINIT),y)
-+romstage-y += early_dmi.c early_pcie.c vcu_mailbox.c
- subdirs-y += native_raminit
-
- else
-diff --git a/src/northbridge/intel/haswell/early_dmi.c b/src/northbridge/intel/haswell/early_dmi.c
-new file mode 100644
-index 0000000000..9941242fd5
---- /dev/null
-+++ b/src/northbridge/intel/haswell/early_dmi.c
-@@ -0,0 +1,96 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <console/console.h>
-+#include <northbridge/intel/haswell/haswell.h>
-+#include <southbridge/intel/lynxpoint/pch.h>
-+#include <types.h>
-+
-+static void dmi_print_link_status(int loglevel)
-+{
-+ const uint16_t dmilsts = dmibar_read16(DMILSTS);
-+ printk(loglevel, "DMI: Running at Gen%u x%u\n", dmilsts & 0xf, dmilsts >> 4 & 0x1f);
-+}
-+
-+#define RETRAIN (1 << 5)
-+
-+#define LTRN (1 << 11)
-+
-+static void dmi_setup_physical_layer(void)
-+{
-+ /* Program DMI AFE settings, which are needed for DMI to work */
-+ peg_dmi_recipe(false, 0);
-+
-+ /* Additional DMI programming steps */
-+ dmibar_setbits32(0x258, 1 << 29);
-+ dmibar_clrsetbits32(0x208, 0x7ff, 0x6b5);
-+ dmibar_clrsetbits32(0x22c, 0xffff, 0x2020);
-+
-+ /* Write SA reference code version */
-+ dmibar_write32(0x71c, 0x0000000f);
-+ dmibar_write32(0x720, 0x01060200);
-+
-+ /* We also have to bring up the PCH side of the DMI link */
-+ pch_dmi_setup_physical_layer();
-+
-+ /* Write-once settings */
-+ dmibar_clrsetbits32(DMILCAP, 0x3f00f, 2 << 0);
-+
-+ printk(BIOS_DEBUG, "Retraining DMI at Gen2 speeds...\n");
-+ dmi_print_link_status(BIOS_DEBUG);
-+
-+ /* Retrain link */
-+ dmibar_setbits16(DMILCTL, RETRAIN);
-+ do {} while (dmibar_read16(DMILSTS) & LTRN);
-+ dmi_print_link_status(BIOS_DEBUG);
-+
-+ /* Retrain link again for DMI Gen2 speeds */
-+ dmibar_setbits16(DMILCTL, RETRAIN);
-+ do {} while (dmibar_read16(DMILSTS) & LTRN);
-+ dmi_print_link_status(BIOS_INFO);
-+}
-+
-+#define VC_ACTIVE (1U << 31)
-+
-+#define VCNEGPND (1 << 1)
-+
-+#define DMI_VC_CFG(vcid, tcmap) (VC_ACTIVE | ((vcid) << 24) | (tcmap))
-+
-+static void dmi_tc_vc_mapping(void)
-+{
-+ printk(BIOS_DEBUG, "Programming SA DMI VC/TC mappings...\n");
-+
-+ if (CONFIG(INTEL_LYNXPOINT_LP))
-+ dmibar_setbits8(0xa78, 1 << 1);
-+
-+ /* Each TC is mapped to one and only one VC */
-+ const u32 vc0 = DMI_VC_CFG(0, (1 << 6) | (1 << 5) | (1 << 4) | (1 << 3) | (1 << 0));
-+ const u32 vc1 = DMI_VC_CFG(1, (1 << 1));
-+ const u32 vcp = DMI_VC_CFG(2, (1 << 2));
-+ const u32 vcm = DMI_VC_CFG(7, (1 << 7));
-+ dmibar_write32(DMIVC0RCTL, vc0);
-+ dmibar_write32(DMIVC1RCTL, vc1);
-+ dmibar_write32(DMIVCPRCTL, vcp);
-+ dmibar_write32(DMIVCMRCTL, vcm);
-+
-+ /* Set Extended VC Count (EVCC) to 1 if VC1 is active */
-+ dmibar_clrsetbits8(DMIPVCCAP1, 7, !!(vc1 & VC_ACTIVE));
-+
-+ /*
-+ * We also have to program the PCH side of the DMI link. Since both ends
-+ * must use the same Virtual Channel settings, we pass them as arguments.
-+ */
-+ pch_dmi_tc_vc_mapping(vc0, vc1, vcp, vcm);
-+
-+ printk(BIOS_DEBUG, "Waiting for SA DMI VC negotiation... ");
-+ do {} while (dmibar_read16(DMIVC0RSTS) & VCNEGPND);
-+ do {} while (dmibar_read16(DMIVC1RSTS) & VCNEGPND);
-+ do {} while (dmibar_read16(DMIVCPRSTS) & VCNEGPND);
-+ do {} while (dmibar_read16(DMIVCMRSTS) & VCNEGPND);
-+ printk(BIOS_DEBUG, "done!\n");
-+}
-+
-+void dmi_early_init(void)
-+{
-+ dmi_setup_physical_layer();
-+ dmi_tc_vc_mapping();
-+}
-diff --git a/src/northbridge/intel/haswell/early_pcie.c b/src/northbridge/intel/haswell/early_pcie.c
-new file mode 100644
-index 0000000000..d3940e3fac
---- /dev/null
-+++ b/src/northbridge/intel/haswell/early_pcie.c
-@@ -0,0 +1,121 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <console/console.h>
-+#include <device/pci_def.h>
-+#include <device/pci_mmio_cfg.h>
-+#include <device/pci_ops.h>
-+#include <northbridge/intel/haswell/haswell.h>
-+#include <northbridge/intel/haswell/vcu_mailbox.h>
-+#include <types.h>
-+
-+#define PEG_DEV(func) PCI_DEV(0, 1, func)
-+
-+#define MAX_PEG_FUNC 3
-+
-+static void peg_dmi_unset_and_set_mask_pcicfg(
-+ volatile union pci_bank *const bank,
-+ const uint32_t offset,
-+ const uint32_t unset_mask,
-+ const uint32_t set_mask,
-+ const uint32_t shift,
-+ const bool valid)
-+{
-+ if (!valid)
-+ return;
-+
-+ volatile uint32_t *const addr = &bank->reg32[offset / sizeof(uint32_t)];
-+ clrsetbits32(addr, unset_mask << shift, set_mask << shift);
-+}
-+
-+static void peg_dmi_unset_and_set_mask_common(
-+ const bool is_peg,
-+ const uint32_t offset,
-+ const uint32_t unset,
-+ const uint32_t set,
-+ const uint32_t shift,
-+ const bool valid)
-+{
-+ const uint32_t unset_mask = unset << shift;
-+ const uint32_t set_mask = set << shift;
-+ if (is_peg) {
-+ for (uint8_t i = 0; i < MAX_PEG_FUNC; i++)
-+ pci_update_config32(PEG_DEV(i), offset, ~unset_mask, set_mask);
-+ } else {
-+ dmibar_clrsetbits32(offset, unset_mask, set_mask);
-+ }
-+}
-+
-+static void peg_dmi_unset_and_set_mask_vcu_mmio(
-+ const uint32_t addr,
-+ const uint32_t unset_mask,
-+ const uint32_t set_mask,
-+ const uint32_t shift,
-+ const bool valid)
-+{
-+ if (!valid)
-+ return;
-+
-+ vcu_update_mmio(addr, ~(unset_mask << shift), set_mask << shift);
-+}
-+
-+#define BUNDLE_STEP 0x20
-+
-+static void *const dmibar = (void *)(uintptr_t)CONFIG_FIXED_DMIBAR_MMIO_BASE;
-+
-+void peg_dmi_recipe(const bool is_peg, const pci_devfn_t dev)
-+{
-+ const bool always = true;
-+ const bool is_dmi = !is_peg;
-+
-+ /* Treat DMIBAR and PEG devices the same way */
-+ volatile union pci_bank *const bank = is_peg ? pci_map_bus(dev) : dmibar;
-+
-+ const size_t bundles = (is_peg ? 8 : 2) * BUNDLE_STEP;
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP) {
-+ /* These are actually per-lane */
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0xa00 + i, 0x1f, 0x0c, 0, always);
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0xa10 + i, 0x1f, 0x0c, 0, always);
-+ }
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x904 + i, 0x1f, 0x02, 0, is_peg);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x904 + i, 0x1f, 0x03, 5, is_peg);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x90c + i, 0x3f, 0x09, 5, always);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x90c + i, 0x0f, 0x05, 21, is_peg);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x910 + i, 0x0f, 0x08, 6, is_peg);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x910 + i, 0x0f, 0x00, 10, always);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x910 + i, 0x07, 0x00, 18, always);
-+
-+ peg_dmi_unset_and_set_mask_vcu_mmio(0x0c008001, 0x1f, 0x03, 25, is_peg);
-+ peg_dmi_unset_and_set_mask_vcu_mmio(0x0c0c8001, 0x3f, 0x00, 23, is_dmi);
-+
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0xc28, 0x1f, 0x13, 18, always);
-+
-+ peg_dmi_unset_and_set_mask_common(is_peg, 0xc38, 0x01, 0x00, 6, always);
-+ peg_dmi_unset_and_set_mask_common(is_peg, 0x260, 0x03, 0x02, 0, always);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x900 + i, 0x03, 0x00, 26, always);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x904 + i, 0x03, 0x03, 10, always);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x90c + i, 0x1f, 0x07, 25, is_peg);
-+
-+ for (size_t i = 0; i < bundles; i += BUNDLE_STEP)
-+ peg_dmi_unset_and_set_mask_pcicfg(bank, 0x91c + i, 0x07, 0x05, 27, is_peg);
-+}
-diff --git a/src/northbridge/intel/haswell/haswell.h b/src/northbridge/intel/haswell/haswell.h
-index 1b29f6baf0..30b4abd0a7 100644
---- a/src/northbridge/intel/haswell/haswell.h
-+++ b/src/northbridge/intel/haswell/haswell.h
-@@ -34,6 +34,9 @@ void haswell_early_initialization(void);
- void haswell_late_initialization(void);
- void haswell_unhide_peg(void);
-
-+void dmi_early_init(void);
-+void peg_dmi_recipe(const bool is_peg, const pci_devfn_t dev);
-+
- void report_platform_info(void);
-
- struct acpi_rsdp;
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.c b/src/northbridge/intel/haswell/native_raminit/raminit_native.c
-index 1aafdf8659..0938e026e3 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_native.c
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.c
-@@ -1,7 +1,19 @@
- /* SPDX-License-Identifier: GPL-2.0-or-later */
-
- #include <console/console.h>
-+#include <northbridge/intel/haswell/haswell.h>
- #include <northbridge/intel/haswell/raminit.h>
-+#include <types.h>
-+
-+static bool early_init_native(int s3resume)
-+{
-+ printk(BIOS_DEBUG, "Starting native platform initialisation\n");
-+
-+ if (!CONFIG(INTEL_LYNXPOINT_LP))
-+ dmi_early_init();
-+
-+ return false;
-+}
-
- void perform_raminit(const int s3resume)
- {
-@@ -9,6 +21,9 @@ void perform_raminit(const int s3resume)
- * See, this function's name is a lie. There are more things to
- * do that memory initialisation, but they are relatively easy.
- */
-+ const bool cpu_replaced = early_init_native(s3resume);
-+
-+ (void)cpu_replaced;
-
- /** TODO: Implement the required magic **/
- die("NATIVE RAMINIT: More Magic (tm) required.\n");
-diff --git a/src/northbridge/intel/haswell/vcu_mailbox.c b/src/northbridge/intel/haswell/vcu_mailbox.c
-new file mode 100644
-index 0000000000..aead144023
---- /dev/null
-+++ b/src/northbridge/intel/haswell/vcu_mailbox.c
-@@ -0,0 +1,147 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <assert.h>
-+#include <console/console.h>
-+#include <delay.h>
-+#include <northbridge/intel/haswell/haswell.h>
-+#include <northbridge/intel/haswell/vcu_mailbox.h>
-+#include <stdint.h>
-+
-+/*
-+ * This is a library for the VCU (Validation Control Unit) mailbox. This
-+ * mailbox is primarily used to adjust some magic PCIe tuning parameters.
-+ *
-+ * There are two revisions of the VCU mailbox. Rev1 is specific to Haswell
-+ * stepping A0, and all other steppings use Rev2. Haswell stepping A0 CPUs
-+ * are early Engineering Samples with undocumented errata, and most likely
-+ * need special microcode updates to boot. Thus, the code does not support
-+ * VCU mailbox Rev1, because no one should need it anymore.
-+ */
-+
-+#define VCU_MAILBOX_INTERFACE 0x6c00
-+#define VCU_MAILBOX_DATA 0x6c04
-+
-+#define VCU_RUN_BUSY (1 << 31)
-+
-+enum vcu_opcode {
-+ VCU_OPCODE_READ_VCU_API_VER_ID = 0x01,
-+ VCU_OPCODE_OPEN_SEQ = 0x02,
-+ VCU_OPCODE_CLOSE_SEQ = 0x03,
-+ VCU_OPCODE_READ_DATA = 0x07,
-+ VCU_OPCODE_WRITE_DATA = 0x08,
-+ VCU_OPCODE_READ_CSR = 0x13,
-+ VCU_OPCODE_WRITE_CSR = 0x14,
-+ VCU_OPCODE_READ_MMIO = 0x15,
-+ VCU_OPCODE_WRITE_MMIO = 0x16,
-+};
-+
-+enum vcu_sequence {
-+ SEQ_ID_READ_CSR = 0x1,
-+ SEQ_ID_WRITE_CSR = 0x2,
-+ SEQ_ID_READ_MMIO = 0x3,
-+ SEQ_ID_WRITE_MMIO = 0x4,
-+};
-+
-+#define VCU_RESPONSE_MASK 0xffff
-+#define VCU_RESPONSE_SUCCESS 0x40
-+#define VCU_RESPONSE_BUSY 0x80
-+#define VCU_RESPONSE_THREAD_UNAVAILABLE 0x82
-+#define VCU_RESPONSE_ILLEGAL 0x90
-+
-+/* FIXME: Use timer API */
-+static void send_vcu_command(const enum vcu_opcode opcode, const uint32_t data)
-+{
-+ for (unsigned int i = 0; i < 10; i++) {
-+ mchbar_write32(VCU_MAILBOX_DATA, data);
-+ mchbar_write32(VCU_MAILBOX_INTERFACE, opcode | VCU_RUN_BUSY);
-+ uint32_t vcu_interface;
-+ for (unsigned int j = 0; j < 100; j++) {
-+ vcu_interface = mchbar_read32(VCU_MAILBOX_INTERFACE);
-+ if (!(vcu_interface & VCU_RUN_BUSY))
-+ break;
-+
-+ udelay(10);
-+ }
-+ if (vcu_interface & VCU_RUN_BUSY)
-+ continue;
-+
-+ if ((vcu_interface & VCU_RESPONSE_MASK) == VCU_RESPONSE_SUCCESS)
-+ return;
-+ }
-+ printk(BIOS_ERR, "VCU: Failed to send command\n");
-+}
-+
-+static enum vcu_opcode get_register_opcode(enum vcu_sequence seq)
-+{
-+ switch (seq) {
-+ case SEQ_ID_READ_CSR:
-+ return VCU_OPCODE_READ_CSR;
-+ case SEQ_ID_WRITE_CSR:
-+ return VCU_OPCODE_WRITE_CSR;
-+ case SEQ_ID_READ_MMIO:
-+ return VCU_OPCODE_READ_MMIO;
-+ case SEQ_ID_WRITE_MMIO:
-+ return VCU_OPCODE_WRITE_MMIO;
-+ default:
-+ return dead_code_t(enum vcu_opcode);
-+ }
-+}
-+
-+static enum vcu_opcode get_data_opcode(enum vcu_sequence seq)
-+{
-+ switch (seq) {
-+ case SEQ_ID_READ_CSR:
-+ case SEQ_ID_READ_MMIO:
-+ return VCU_OPCODE_READ_DATA;
-+ case SEQ_ID_WRITE_CSR:
-+ case SEQ_ID_WRITE_MMIO:
-+ return VCU_OPCODE_WRITE_DATA;
-+ default:
-+ return dead_code_t(enum vcu_opcode);
-+ }
-+}
-+
-+static uint32_t send_vcu_sequence(uint32_t addr, enum vcu_sequence seq, uint32_t wr_data)
-+{
-+ send_vcu_command(VCU_OPCODE_OPEN_SEQ, seq);
-+
-+ send_vcu_command(get_register_opcode(seq), addr);
-+
-+ send_vcu_command(get_data_opcode(seq), wr_data);
-+
-+ const uint32_t rd_data = mchbar_read32(VCU_MAILBOX_DATA);
-+
-+ send_vcu_command(VCU_OPCODE_CLOSE_SEQ, seq);
-+
-+ return rd_data;
-+}
-+
-+uint32_t vcu_read_csr(uint32_t addr)
-+{
-+ return send_vcu_sequence(addr, SEQ_ID_READ_CSR, 0);
-+}
-+
-+void vcu_write_csr(uint32_t addr, uint32_t data)
-+{
-+ send_vcu_sequence(addr, SEQ_ID_WRITE_CSR, data);
-+}
-+
-+void vcu_update_csr(uint32_t addr, uint32_t andvalue, uint32_t orvalue)
-+{
-+ vcu_write_csr(addr, (vcu_read_csr(addr) & andvalue) | orvalue);
-+}
-+
-+uint32_t vcu_read_mmio(uint32_t addr)
-+{
-+ return send_vcu_sequence(addr, SEQ_ID_READ_MMIO, 0);
-+}
-+
-+void vcu_write_mmio(uint32_t addr, uint32_t data)
-+{
-+ send_vcu_sequence(addr, SEQ_ID_WRITE_MMIO, data);
-+}
-+
-+void vcu_update_mmio(uint32_t addr, uint32_t andvalue, uint32_t orvalue)
-+{
-+ vcu_write_mmio(addr, (vcu_read_mmio(addr) & andvalue) | orvalue);
-+}
-diff --git a/src/northbridge/intel/haswell/vcu_mailbox.h b/src/northbridge/intel/haswell/vcu_mailbox.h
-new file mode 100644
-index 0000000000..ba0a62e486
---- /dev/null
-+++ b/src/northbridge/intel/haswell/vcu_mailbox.h
-@@ -0,0 +1,16 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#ifndef HASWELL_VCU_MAILBOX_H
-+#define HASWELL_VCU_MAILBOX_H
-+
-+#include <stdint.h>
-+
-+uint32_t vcu_read_csr(uint32_t addr);
-+void vcu_write_csr(uint32_t addr, uint32_t data);
-+void vcu_update_csr(uint32_t addr, uint32_t andvalue, uint32_t orvalue);
-+
-+uint32_t vcu_read_mmio(uint32_t addr);
-+void vcu_write_mmio(uint32_t addr, uint32_t data);
-+void vcu_update_mmio(uint32_t addr, uint32_t andvalue, uint32_t orvalue);
-+
-+#endif /* HASWELL_VCU_MAILBOX_H */
-diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc
-index 02022d348d..b8503ac8bc 100644
---- a/src/southbridge/intel/lynxpoint/Makefile.inc
-+++ b/src/southbridge/intel/lynxpoint/Makefile.inc
-@@ -37,6 +37,8 @@ bootblock-y += early_pch.c
- romstage-y += early_usb.c early_me.c me_status.c early_pch.c
- romstage-y += pmutil.c
-
-+romstage-$(CONFIG_USE_NATIVE_RAMINIT) += early_pch_native.c
-+
- ifeq ($(CONFIG_INTEL_LYNXPOINT_LP),y)
- romstage-y += lp_gpio.c
- ramstage-y += lp_gpio.c
-diff --git a/src/southbridge/intel/lynxpoint/early_pch_native.c b/src/southbridge/intel/lynxpoint/early_pch_native.c
-new file mode 100644
-index 0000000000..c28ddfcf5d
---- /dev/null
-+++ b/src/southbridge/intel/lynxpoint/early_pch_native.c
-@@ -0,0 +1,52 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <console/console.h>
-+#include <device/pci_ops.h>
-+#include <southbridge/intel/lynxpoint/pch.h>
-+#include <types.h>
-+
-+void pch_dmi_setup_physical_layer(void)
-+{
-+ /* FIXME: We need to make sure the SA supports Gen2 as well */
-+ if ((RCBA32(0x21a4) & 0x0f) == 0x02) {
-+ /* Set Gen 2 Common Clock N_FTS */
-+ RCBA32_AND_OR(0x2340, ~0x00ff0000, 0x3a << 16);
-+
-+ /* Set Target Link Speed to DMI Gen2 */
-+ RCBA8_AND_OR(DLCTL2, ~0x07, 0x02);
-+ }
-+}
-+
-+#define VC_ACTIVE (1U << 31)
-+
-+#define VCNEGPND (1 << 1)
-+
-+void pch_dmi_tc_vc_mapping(const u32 vc0, const u32 vc1, const u32 vcp, const u32 vcm)
-+{
-+ printk(BIOS_DEBUG, "Programming PCH DMI VC/TC mappings...\n");
-+
-+ RCBA32_AND_OR(CIR0050, ~(0xf << 20), 2 << 20);
-+ if (vcp & VC_ACTIVE)
-+ RCBA32_OR(CIR0050, 1 << 19 | 1 << 17);
-+
-+ RCBA32(CIR0050); /* Posted Write */
-+
-+ /* Use the same virtual channel mapping on both ends of the DMI link */
-+ RCBA32(V0CTL) = vc0;
-+ RCBA32(V1CTL) = vc1;
-+ RCBA32(V1CTL); /* Posted Write */
-+ RCBA32(VPCTL) = vcp;
-+ RCBA32(VPCTL); /* Posted Write */
-+ RCBA32(VMCTL) = vcm;
-+
-+ /* Lock the registers */
-+ RCBA32_OR(CIR0050, 1U << 31);
-+ RCBA32(CIR0050); /* Posted Write */
-+
-+ printk(BIOS_DEBUG, "Waiting for PCH DMI VC negotiation... ");
-+ do {} while (RCBA16(V0STS) & VCNEGPND);
-+ do {} while (RCBA16(V1STS) & VCNEGPND);
-+ do {} while (RCBA16(VPSTS) & VCNEGPND);
-+ do {} while (RCBA16(VMSTS) & VCNEGPND);
-+ printk(BIOS_DEBUG, "done!\n");
-+}
-diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
-index 7d9fc6d6af..b5e0c2a830 100644
---- a/src/southbridge/intel/lynxpoint/pch.h
-+++ b/src/southbridge/intel/lynxpoint/pch.h
-@@ -113,6 +113,9 @@ enum pch_platform_type {
- PCH_TYPE_ULT = 5,
- };
-
-+void pch_dmi_setup_physical_layer(void);
-+void pch_dmi_tc_vc_mapping(u32 vc0, u32 vc1, u32 vcp, u32 vcm);
-+
- void usb_ehci_sleep_prepare(pci_devfn_t dev, u8 slp_typ);
- void usb_ehci_disable(pci_devfn_t dev);
- void usb_xhci_sleep_prepare(pci_devfn_t dev, u8 slp_typ);
-@@ -406,9 +409,10 @@ void mainboard_config_rcba(void);
-
- /* Southbridge IO BARs */
-
-+#define PMBASE 0x40
- #define GPIOBASE 0x48
-
--#define PMBASE 0x40
-+#define CIR0050 0x0050 /* 32bit */
-
- #define RPC 0x0400 /* 32bit */
- #define RPFN 0x0404 /* 32bit */
-@@ -431,6 +435,20 @@ void mainboard_config_rcba(void);
- #define IOTR2 0x1e90 /* 64bit */
- #define IOTR3 0x1e98 /* 64bit */
-
-+#define V0CTL 0x2014 /* 32bit */
-+#define V0STS 0x201a /* 16bit */
-+
-+#define V1CTL 0x2020 /* 32bit */
-+#define V1STS 0x2026 /* 16bit */
-+
-+#define VPCTL 0x2030 /* 32bit */
-+#define VPSTS 0x2038 /* 16bit */
-+
-+#define VMCTL 0x2040 /* 32bit */
-+#define VMSTS 0x2048 /* 16bit */
-+
-+#define DLCTL2 0x21b0
-+
- #define TCTL 0x3000 /* 8bit */
-
- #define NOINT 0
---
-2.39.2
-