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-rw-r--r--config/coreboot/default/patches/0043-haswell-NRI-Initialise-MPLL.patch348
1 files changed, 0 insertions, 348 deletions
diff --git a/config/coreboot/default/patches/0043-haswell-NRI-Initialise-MPLL.patch b/config/coreboot/default/patches/0043-haswell-NRI-Initialise-MPLL.patch
deleted file mode 100644
index c571fe3b..00000000
--- a/config/coreboot/default/patches/0043-haswell-NRI-Initialise-MPLL.patch
+++ /dev/null
@@ -1,348 +0,0 @@
-From ab36967cce0593dd17f3018ab4a6661e4219d242 Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Thu, 11 Apr 2024 17:25:07 +0200
-Subject: [PATCH 43/65] 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 8078c9c386..15a1550424 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-@@ -24,6 +24,8 @@ 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 **/
- };
-
-@@ -83,10 +85,19 @@ 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
-
---
-2.39.5
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-18 19:38:31 +0000