summaryrefslogtreecommitdiff
path: root/resources/coreboot/haswell/patches/0011-haswell-NRI-Initialise-MPLL.patch
diff options
context:
space:
mode:
authorLeah Rowe <leah@libreboot.org>2023-07-08 22:07:36 +0100
committerLeah Rowe <leah@libreboot.org>2023-07-08 22:09:58 +0100
commit2bbb4c839a8224b17c7929b7ea612085d1351d20 (patch)
tree2542dfe950ff5927fa0d2f3fb1782c262467953e /resources/coreboot/haswell/patches/0011-haswell-NRI-Initialise-MPLL.patch
parent6bc619db902015af208f2b3d2321708e1db9da11 (diff)
remove blobutil and boards/utils needing/for blobs
delete all blobs. TODO: actually deblob coreboot/uboot when downloading. i'll that in a little while, in an upcoming commit. yes. purge it all, in fsf style. censor what the fsf doesn't like. so that they can feel good about having less, because ideological purity is better than helping more people use coreboot, yes? Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'resources/coreboot/haswell/patches/0011-haswell-NRI-Initialise-MPLL.patch')
-rw-r--r--resources/coreboot/haswell/patches/0011-haswell-NRI-Initialise-MPLL.patch346
1 files changed, 0 insertions, 346 deletions
diff --git a/resources/coreboot/haswell/patches/0011-haswell-NRI-Initialise-MPLL.patch b/resources/coreboot/haswell/patches/0011-haswell-NRI-Initialise-MPLL.patch
deleted file mode 100644
index 1fec2e38..00000000
--- a/resources/coreboot/haswell/patches/0011-haswell-NRI-Initialise-MPLL.patch
+++ /dev/null
@@ -1,346 +0,0 @@
-From 77a89d55ab7a715dc20c34a6edacaaf781b56087 Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Sat, 7 May 2022 14:36:10 +0200
-Subject: [PATCH 11/26] 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.inc | 2 +
- .../intel/haswell/native_raminit/init_mpll.c | 210 ++++++++++++++++++
- .../haswell/native_raminit/io_comp_control.c | 22 ++
- .../haswell/native_raminit/raminit_main.c | 1 +
- .../haswell/native_raminit/raminit_native.h | 11 +
- .../intel/haswell/registers/mchbar.h | 3 +
- 6 files changed, 249 insertions(+)
- 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.inc b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-index ebf7abc6ec..c125d84f0b 100644
---- a/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-@@ -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..2faa183724
---- /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/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..7e96c08938
---- /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/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 2d2cfa48bb..09545422c0 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-@@ -21,6 +21,7 @@ struct task_entry {
-
- static const struct task_entry cold_boot[] = {
- { 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
-