coreboot/default: merge coreboot/haswell

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 0 insertions, 348 deletions

diff --git a/config/coreboot/haswell/patches/0001-haswell-NRI-Initialise-MPLL.patch b/config/coreboot/haswell/patches/0001-haswell-NRI-Initialise-MPLL.patch
deleted file mode 100644
index 0de1a4ec..00000000
--- a/config/coreboot/haswell/patches/0001-haswell-NRI-Initialise-MPLL.patch
+++ /dev/null
@@ -1,348 +0,0 @@
-From cce5392f272b0acc493f47f9b5ca3cf90ce901e8 Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Thu, 11 Apr 2024 17:25:07 +0200
-Subject: [PATCH 01/20] haswell NRI: Initialise MPLL
-
-Add code to initialise the MPLL (Memory PLL). The procedure is similar
-to the one for Sandy/Ivy Bridge, but it is not worth factoring out.
-
-Change-Id: I978c352de68f6d8cecc76f4ae3c12daaf4be9ed6
-Signed-off-by: Angel Pons <th3fanbus@gmail.com>
----
- .../intel/haswell/native_raminit/Makefile.mk  |   2 +
- .../intel/haswell/native_raminit/init_mpll.c  | 210 ++++++++++++++++++
- .../haswell/native_raminit/io_comp_control.c  |  22 ++
- .../haswell/native_raminit/raminit_main.c     |   3 +-
- .../haswell/native_raminit/raminit_native.h   |  11 +
- .../intel/haswell/registers/mchbar.h          |   3 +
- 6 files changed, 250 insertions(+), 1 deletion(-)
- create mode 100644 src/northbridge/intel/haswell/native_raminit/init_mpll.c
- create mode 100644 src/northbridge/intel/haswell/native_raminit/io_comp_control.c
-
-diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.mk b/src/northbridge/intel/haswell/native_raminit/Makefile.mk
-index ebf7abc6ec..c125d84f0b 100644
---- a/src/northbridge/intel/haswell/native_raminit/Makefile.mk
-+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.mk
-@@ -1,5 +1,7 @@
- ## SPDX-License-Identifier: GPL-2.0-or-later
- 
-+romstage-y += init_mpll.c
-+romstage-y += io_comp_control.c
- romstage-y += raminit_main.c
- romstage-y += raminit_native.c
- romstage-y += spd_bitmunching.c
-diff --git a/src/northbridge/intel/haswell/native_raminit/init_mpll.c b/src/northbridge/intel/haswell/native_raminit/init_mpll.c
-new file mode 100644
-index 0000000000..1f3f2c29a9
---- /dev/null
-+++ b/src/northbridge/intel/haswell/native_raminit/init_mpll.c
-@@ -0,0 +1,210 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <commonlib/bsd/clamp.h>
-+#include <console/console.h>
-+#include <delay.h>
-+#include <device/pci_ops.h>
-+#include <northbridge/intel/haswell/haswell.h>
-+#include <types.h>
-+
-+#include "raminit_native.h"
-+
-+static uint32_t get_mem_multiplier(const struct sysinfo *ctrl)
-+{
-+	const uint32_t mult = NS2MHZ_DIV256 / (ctrl->tCK * ctrl->base_freq);
-+
-+	if (ctrl->base_freq == 100)
-+		return clamp_u32(7, mult, 12);
-+
-+	if (ctrl->base_freq == 133)
-+		return clamp_u32(3, mult, 10);
-+
-+	die("Unsupported base frequency\n");
-+}
-+
-+static void normalize_tck(struct sysinfo *ctrl, const bool pll_ref100)
-+{
-+	/** TODO: Haswell supports up to DDR3-2600 **/
-+	if (ctrl->tCK <= TCK_1200MHZ) {
-+		ctrl->tCK = TCK_1200MHZ;
-+		ctrl->base_freq = 133;
-+		ctrl->mem_clock_mhz = 1200;
-+
-+	} else if (ctrl->tCK <= TCK_1100MHZ) {
-+		ctrl->tCK = TCK_1100MHZ;
-+		ctrl->base_freq = 100;
-+		ctrl->mem_clock_mhz = 1100;
-+
-+	} else if (ctrl->tCK <= TCK_1066MHZ) {
-+		ctrl->tCK = TCK_1066MHZ;
-+		ctrl->base_freq = 133;
-+		ctrl->mem_clock_mhz = 1066;
-+
-+	} else if (ctrl->tCK <= TCK_1000MHZ) {
-+		ctrl->tCK = TCK_1000MHZ;
-+		ctrl->base_freq = 100;
-+		ctrl->mem_clock_mhz = 1000;
-+
-+	} else if (ctrl->tCK <= TCK_933MHZ) {
-+		ctrl->tCK = TCK_933MHZ;
-+		ctrl->base_freq = 133;
-+		ctrl->mem_clock_mhz = 933;
-+
-+	} else if (ctrl->tCK <= TCK_900MHZ) {
-+		ctrl->tCK = TCK_900MHZ;
-+		ctrl->base_freq = 100;
-+		ctrl->mem_clock_mhz = 900;
-+
-+	} else if (ctrl->tCK <= TCK_800MHZ) {
-+		ctrl->tCK = TCK_800MHZ;
-+		ctrl->base_freq = 133;
-+		ctrl->mem_clock_mhz = 800;
-+
-+	} else if (ctrl->tCK <= TCK_700MHZ) {
-+		ctrl->tCK = TCK_700MHZ;
-+		ctrl->base_freq = 100;
-+		ctrl->mem_clock_mhz = 700;
-+
-+	} else if (ctrl->tCK <= TCK_666MHZ) {
-+		ctrl->tCK = TCK_666MHZ;
-+		ctrl->base_freq = 133;
-+		ctrl->mem_clock_mhz = 666;
-+
-+	} else if (ctrl->tCK <= TCK_533MHZ) {
-+		ctrl->tCK = TCK_533MHZ;
-+		ctrl->base_freq = 133;
-+		ctrl->mem_clock_mhz = 533;
-+
-+	} else if (ctrl->tCK <= TCK_400MHZ) {
-+		ctrl->tCK = TCK_400MHZ;
-+		ctrl->base_freq = 133;
-+		ctrl->mem_clock_mhz = 400;
-+
-+	} else {
-+		ctrl->tCK = 0;
-+		ctrl->base_freq = 1;
-+		ctrl->mem_clock_mhz = 0;
-+		return;
-+	}
-+	if (!pll_ref100 && ctrl->base_freq == 100) {
-+		/* Skip unsupported frequency */
-+		ctrl->tCK++;
-+		normalize_tck(ctrl, pll_ref100);
-+	}
-+}
-+
-+#define MIN_CAS	4
-+#define MAX_CAS	24
-+
-+static uint8_t find_compatible_cas(struct sysinfo *ctrl)
-+{
-+	printk(RAM_DEBUG, "With tCK %u, try CAS: ", ctrl->tCK);
-+	const uint8_t cas_lower = MAX(MIN_CAS, DIV_ROUND_UP(ctrl->tAA, ctrl->tCK));
-+	const uint8_t cas_upper = MIN(MAX_CAS, 19); /* JEDEC MR0 limit */
-+
-+	if (!(ctrl->cas_supported >> (cas_lower - MIN_CAS))) {
-+		printk(RAM_DEBUG, "DIMMs do not support CAS >= %u\n", cas_lower);
-+		ctrl->tCK++;
-+		return 0;
-+	}
-+	for (uint8_t cas = cas_lower; cas <= cas_upper; cas++) {
-+		printk(RAM_DEBUG, "%u ", cas);
-+		if (ctrl->cas_supported & BIT(cas - MIN_CAS)) {
-+			printk(RAM_DEBUG, "OK\n");
-+			return cas;
-+		}
-+	}
-+	return 0;
-+}
-+
-+static enum raminit_status find_cas_tck(struct sysinfo *ctrl)
-+{
-+	/** TODO: Honor all possible PLL_REF100_CFG values **/
-+	uint8_t pll_ref100 = (pci_read_config32(HOST_BRIDGE, CAPID0_B) >> 21) & 0x7;
-+	printk(RAM_DEBUG, "PLL_REF100_CFG value: 0x%x\n", pll_ref100);
-+	printk(RAM_DEBUG, "100MHz reference clock support: %s\n", pll_ref100 ? "yes" : "no");
-+
-+	uint8_t selected_cas;
-+	while (true) {
-+		/* Round tCK up so that it is a multiple of either 133 or 100 MHz */
-+		normalize_tck(ctrl, pll_ref100);
-+		if (!ctrl->tCK) {
-+			printk(BIOS_ERR, "Couldn't find compatible clock / CAS settings\n");
-+			return RAMINIT_STATUS_MPLL_INIT_FAILURE;
-+		}
-+		selected_cas = find_compatible_cas(ctrl);
-+		if (selected_cas)
-+			break;
-+
-+		ctrl->tCK++;
-+	}
-+	printk(BIOS_DEBUG, "Found compatible clock / CAS settings\n");
-+	printk(BIOS_DEBUG, "Selected DRAM frequency: %u MHz\n", NS2MHZ_DIV256 / ctrl->tCK);
-+	printk(BIOS_DEBUG, "Selected CAS latency   : %uT\n", selected_cas);
-+	ctrl->multiplier = get_mem_multiplier(ctrl);
-+	return RAMINIT_STATUS_SUCCESS;
-+}
-+
-+enum raminit_status initialise_mpll(struct sysinfo *ctrl)
-+{
-+	if (ctrl->tCK > TCK_400MHZ) {
-+		printk(BIOS_ERR, "tCK is too slow. Increasing to 400 MHz as last resort\n");
-+		ctrl->tCK = TCK_400MHZ;
-+	}
-+	while (true) {
-+		if (!ctrl->qclkps) {
-+			const enum raminit_status status = find_cas_tck(ctrl);
-+			if (status)
-+				return status;
-+		}
-+
-+		/*
-+		 * Unlike previous generations, Haswell's MPLL won't shut down if the
-+		 * requested frequency isn't supported. But we cannot reinitialize it.
-+		 * Another different thing: MPLL registers are 4-bit instead of 8-bit.
-+		 */
-+
-+		/** FIXME: Obtain current clock frequency if we want to skip this **/
-+		//if (mchbar_read32(MC_BIOS_DATA) != 0)
-+		//	break;
-+
-+		uint32_t mc_bios_req = ctrl->multiplier;
-+		if (ctrl->base_freq == 100) {
-+			/* Use 100 MHz reference clock */
-+			mc_bios_req |= BIT(4);
-+		}
-+		mc_bios_req |= BIT(31);
-+		printk(RAM_DEBUG, "MC_BIOS_REQ = 0x%08x\n", mc_bios_req);
-+		printk(BIOS_DEBUG, "MPLL busy... ");
-+		mchbar_write32(MC_BIOS_REQ, mc_bios_req);
-+
-+		for (unsigned int i = 0; i <= 5000; i++) {
-+			if (!(mchbar_read32(MC_BIOS_REQ) & BIT(31))) {
-+				printk(BIOS_DEBUG, "done in %u us\n", i);
-+				break;
-+			}
-+			udelay(1);
-+		}
-+		if (mchbar_read32(MC_BIOS_REQ) & BIT(31))
-+			printk(BIOS_DEBUG, "did not lock\n");
-+
-+		/* Verify locked frequency */
-+		const uint32_t mc_bios_data = mchbar_read32(MC_BIOS_DATA);
-+		printk(RAM_DEBUG, "MC_BIOS_DATA = 0x%08x\n", mc_bios_data);
-+		if ((mc_bios_data & 0xf) >= ctrl->multiplier)
-+			break;
-+
-+		printk(BIOS_DEBUG, "Retrying at a lower frequency\n\n");
-+		ctrl->tCK++;
-+	}
-+	if (!ctrl->mem_clock_mhz) {
-+		printk(BIOS_ERR, "Could not program MPLL frequency\n");
-+		return RAMINIT_STATUS_MPLL_INIT_FAILURE;
-+	}
-+	printk(BIOS_DEBUG, "MPLL frequency is set to: %u MHz ", ctrl->mem_clock_mhz);
-+	ctrl->mem_clock_fs = 1000000000 / ctrl->mem_clock_mhz;
-+	printk(BIOS_DEBUG, "(period: %u femtoseconds)\n", ctrl->mem_clock_fs);
-+	ctrl->qclkps = ctrl->mem_clock_fs / 2000;
-+	printk(BIOS_DEBUG, "Quadrature clock period: %u picoseconds\n", ctrl->qclkps);
-+	return wait_for_first_rcomp();
-+}
-diff --git a/src/northbridge/intel/haswell/native_raminit/io_comp_control.c b/src/northbridge/intel/haswell/native_raminit/io_comp_control.c
-new file mode 100644
-index 0000000000..d45b608dd3
---- /dev/null
-+++ b/src/northbridge/intel/haswell/native_raminit/io_comp_control.c
-@@ -0,0 +1,22 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <commonlib/bsd/clamp.h>
-+#include <console/console.h>
-+#include <northbridge/intel/haswell/haswell.h>
-+#include <timer.h>
-+#include <types.h>
-+
-+#include "raminit_native.h"
-+
-+enum raminit_status wait_for_first_rcomp(void)
-+{
-+	struct stopwatch timer;
-+	stopwatch_init_msecs_expire(&timer, 2000);
-+	do {
-+		if (mchbar_read32(RCOMP_TIMER) & BIT(16))
-+			return RAMINIT_STATUS_SUCCESS;
-+
-+	} while (!stopwatch_expired(&timer));
-+	printk(BIOS_ERR, "Timed out waiting for RCOMP to complete\n");
-+	return RAMINIT_STATUS_POLL_TIMEOUT;
-+}
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_main.c b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-index 19ec5859ac..bf745e943f 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-@@ -19,7 +19,8 @@ struct task_entry {
- };
- 
- static const struct task_entry cold_boot[] = {
--	{ collect_spd_info,           true, "PROCSPD",    },
-+	{ collect_spd_info,                                       true, "PROCSPD",    },
-+	{ initialise_mpll,                                        true, "INITMPLL",   },
- };
- 
- /* Return a generic stepping value to make stepping checks simpler */
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-index 1a0793947e..a54581abc7 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-@@ -23,6 +23,8 @@ enum raminit_status {
- 	RAMINIT_STATUS_SUCCESS = 0,
- 	RAMINIT_STATUS_NO_MEMORY_INSTALLED,
- 	RAMINIT_STATUS_UNSUPPORTED_MEMORY,
-+	RAMINIT_STATUS_MPLL_INIT_FAILURE,
-+	RAMINIT_STATUS_POLL_TIMEOUT,
- 	RAMINIT_STATUS_UNSPECIFIED_ERROR, /** TODO: Deprecated in favor of specific values **/
- };
- 
-@@ -82,10 +84,19 @@ struct sysinfo {
- 	uint8_t rankmap[NUM_CHANNELS];
- 	uint8_t rank_mirrored[NUM_CHANNELS];
- 	uint32_t channel_size_mb[NUM_CHANNELS];
-+
-+	uint8_t base_freq;		/* Memory base frequency, either 100 or 133 MHz */
-+	uint32_t multiplier;
-+	uint32_t mem_clock_mhz;
-+	uint32_t mem_clock_fs;		/* Memory clock period in femtoseconds */
-+	uint32_t qclkps;		/* Quadrature clock period in picoseconds */
- };
- 
- void raminit_main(enum raminit_boot_mode bootmode);
- 
- enum raminit_status collect_spd_info(struct sysinfo *ctrl);
-+enum raminit_status initialise_mpll(struct sysinfo *ctrl);
-+
-+enum raminit_status wait_for_first_rcomp(void);
- 
- #endif
-diff --git a/src/northbridge/intel/haswell/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h
-index 5610e7089a..45f8174995 100644
---- a/src/northbridge/intel/haswell/registers/mchbar.h
-+++ b/src/northbridge/intel/haswell/registers/mchbar.h
-@@ -13,6 +13,8 @@
- #define MC_INIT_STATE_G		0x5030
- #define MRC_REVISION		0x5034 /* MRC Revision */
- 
-+#define RCOMP_TIMER		0x5084
-+
- #define MC_LOCK			0x50fc /* Memory Controller Lock register */
- 
- #define GFXVTBAR		0x5400 /* Base address for IGD */
-@@ -61,6 +63,7 @@
- 
- #define BIOS_RESET_CPL		0x5da8 /* 8-bit */
- 
-+#define MC_BIOS_REQ		0x5e00 /* Memory frequency request register */
- #define MC_BIOS_DATA		0x5e04 /* Miscellaneous information for BIOS */
- #define SAPMCTL			0x5f00
- 
--- 
-2.39.2
-