diff options
Diffstat (limited to 'config/coreboot/default/patches/0041-nb-gm45-Fix-Angel-s-DDR2-RCOMP-fix-on-DDR3-boards.patch')
| -rw-r--r-- | config/coreboot/default/patches/0041-nb-gm45-Fix-Angel-s-DDR2-RCOMP-fix-on-DDR3-boards.patch | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/config/coreboot/default/patches/0041-nb-gm45-Fix-Angel-s-DDR2-RCOMP-fix-on-DDR3-boards.patch b/config/coreboot/default/patches/0041-nb-gm45-Fix-Angel-s-DDR2-RCOMP-fix-on-DDR3-boards.patch new file mode 100644 index 00000000..6ec32987 --- /dev/null +++ b/config/coreboot/default/patches/0041-nb-gm45-Fix-Angel-s-DDR2-RCOMP-fix-on-DDR3-boards.patch @@ -0,0 +1,240 @@ +From 3110c4392d40175716f167be5ef8234f2b4cd030 Mon Sep 17 00:00:00 2001 +From: Leah Rowe <info@minifree.org> +Date: Tue, 6 Aug 2024 00:50:24 +0100 +Subject: [PATCH 41/65] nb/gm45: Fix Angel's DDR2 RCOMP fix on DDR3 boards + +We add this patch: + +commit commit_id_here +Author: Angel Pons <th3fanbus@gmail.com> +Date: Mon May 10 22:40:59 2021 +0200 + + nb/intel/gm45: Make DDR2 raminit work + +This patch was original applied, in lbmk, only on coreboot/dell, +separately from coreboot/default, which was wasteful because it +meant having an entire coreboot tree just for a single board. We +did this, because the DDR2 RCOMP fix happened to break DDR3 init +on other boards. + +What *this* new patch does on top of Angel's patch, is make sure +that their changes only apply to DDR2, while DDR3 behaviour remains +unchanged. This means that the Dell Latitude E6400 can be supported +in the main coreboot tree, within lbmk. + +Essentially, this patch restores the old behaviour, prior to applying +Angel's patch, only when DDR3 memory is used. + +Signed-off-by: Leah Rowe <info@minifree.org> +--- + src/northbridge/intel/gm45/raminit.c | 161 +++++++++--------- + .../intel/gm45/raminit_rcomp_calibration.c | 9 +- + 2 files changed, 88 insertions(+), 82 deletions(-) + +diff --git a/src/northbridge/intel/gm45/raminit.c b/src/northbridge/intel/gm45/raminit.c +index df8f46fbbc..433db3a68c 100644 +--- a/src/northbridge/intel/gm45/raminit.c ++++ b/src/northbridge/intel/gm45/raminit.c +@@ -1117,7 +1117,10 @@ static void dram_program_timings(const int spd_type, const timings_t *const timi + reg = (reg & ~(0xf << 10)) | (2 << 10); + else + reg = (reg & ~(0xf << 10)) | (3 << 10); +- reg = (reg & ~(0x7 << 5)) | (2 << 5); ++ if (spd_type == DDR2) ++ reg = (reg & ~(0x7 << 5)) | (2 << 5); ++ else ++ reg = (reg & ~(0x7 << 5)) | (3 << 5); + } else if (timings->mem_clock != MEM_CLOCK_1067MT) { + reg = (reg & ~(0x7 << 15)) | ((9 - timings->CAS) << 15); + reg = (reg & ~(0xf << 10)) | ((timings->CAS - 3) << 10); +@@ -2209,83 +2212,85 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume) + raminit_write_training(timings->mem_clock, dimms, s3resume); + } + +- /* +- * Program hardcoded DDR2-800 RCOMP SRAM codes. This must be done +- * after receiver enable calibration, otherwise raminit sometimes +- * completes with non-working memory. +- */ +- mchbar_write32(0x0530, 0x06060005); +- mchbar_write32(0x0680, 0x06060606); +- mchbar_write32(0x0684, 0x08070606); +- mchbar_write32(0x0688, 0x0e0e0c0a); +- mchbar_write32(0x068c, 0x0e0e0e0e); +- mchbar_write32(0x0698, 0x06060606); +- mchbar_write32(0x069c, 0x08070606); +- mchbar_write32(0x06a0, 0x0c0c0b0a); +- mchbar_write32(0x06a4, 0x0c0c0c0c); +- +- mchbar_write32(0x06c0, 0x02020202); +- mchbar_write32(0x06c4, 0x03020202); +- mchbar_write32(0x06c8, 0x04040403); +- mchbar_write32(0x06cc, 0x04040404); +- mchbar_write32(0x06d8, 0x02020202); +- mchbar_write32(0x06dc, 0x03020202); +- mchbar_write32(0x06e0, 0x04040403); +- mchbar_write32(0x06e4, 0x04040404); +- +- mchbar_write32(0x0700, 0x02020202); +- mchbar_write32(0x0704, 0x03020202); +- mchbar_write32(0x0708, 0x04040403); +- mchbar_write32(0x070c, 0x04040404); +- mchbar_write32(0x0718, 0x02020202); +- mchbar_write32(0x071c, 0x03020202); +- mchbar_write32(0x0720, 0x04040403); +- mchbar_write32(0x0724, 0x04040404); +- +- mchbar_write32(0x0740, 0x02020202); +- mchbar_write32(0x0744, 0x03020202); +- mchbar_write32(0x0748, 0x04040403); +- mchbar_write32(0x074c, 0x04040404); +- mchbar_write32(0x0758, 0x02020202); +- mchbar_write32(0x075c, 0x03020202); +- mchbar_write32(0x0760, 0x04040403); +- mchbar_write32(0x0764, 0x04040404); +- +- mchbar_write32(0x0780, 0x06060606); +- mchbar_write32(0x0784, 0x09070606); +- mchbar_write32(0x0788, 0x0e0e0c0b); +- mchbar_write32(0x078c, 0x0e0e0e0e); +- mchbar_write32(0x0798, 0x06060606); +- mchbar_write32(0x079c, 0x09070606); +- mchbar_write32(0x07a0, 0x0d0d0c0b); +- mchbar_write32(0x07a4, 0x0d0d0d0d); +- +- mchbar_write32(0x07c0, 0x06060606); +- mchbar_write32(0x07c4, 0x09070606); +- mchbar_write32(0x07c8, 0x0e0e0c0b); +- mchbar_write32(0x07cc, 0x0e0e0e0e); +- mchbar_write32(0x07d8, 0x06060606); +- mchbar_write32(0x07dc, 0x09070606); +- mchbar_write32(0x07e0, 0x0d0d0c0b); +- mchbar_write32(0x07e4, 0x0d0d0d0d); +- +- mchbar_write32(0x0840, 0x06060606); +- mchbar_write32(0x0844, 0x08070606); +- mchbar_write32(0x0848, 0x0e0e0c0a); +- mchbar_write32(0x084c, 0x0e0e0e0e); +- mchbar_write32(0x0858, 0x06060606); +- mchbar_write32(0x085c, 0x08070606); +- mchbar_write32(0x0860, 0x0c0c0b0a); +- mchbar_write32(0x0864, 0x0c0c0c0c); +- +- mchbar_write32(0x0880, 0x02020202); +- mchbar_write32(0x0884, 0x03020202); +- mchbar_write32(0x0888, 0x04040403); +- mchbar_write32(0x088c, 0x04040404); +- mchbar_write32(0x0898, 0x02020202); +- mchbar_write32(0x089c, 0x03020202); +- mchbar_write32(0x08a0, 0x04040403); +- mchbar_write32(0x08a4, 0x04040404); ++ if (sysinfo->spd_type == DDR2) { ++ /* ++ * Program hardcoded DDR2-800 RCOMP SRAM codes. This must be done ++ * after receiver enable calibration, otherwise raminit sometimes ++ * completes with non-working memory. ++ */ ++ mchbar_write32(0x0530, 0x06060005); ++ mchbar_write32(0x0680, 0x06060606); ++ mchbar_write32(0x0684, 0x08070606); ++ mchbar_write32(0x0688, 0x0e0e0c0a); ++ mchbar_write32(0x068c, 0x0e0e0e0e); ++ mchbar_write32(0x0698, 0x06060606); ++ mchbar_write32(0x069c, 0x08070606); ++ mchbar_write32(0x06a0, 0x0c0c0b0a); ++ mchbar_write32(0x06a4, 0x0c0c0c0c); ++ ++ mchbar_write32(0x06c0, 0x02020202); ++ mchbar_write32(0x06c4, 0x03020202); ++ mchbar_write32(0x06c8, 0x04040403); ++ mchbar_write32(0x06cc, 0x04040404); ++ mchbar_write32(0x06d8, 0x02020202); ++ mchbar_write32(0x06dc, 0x03020202); ++ mchbar_write32(0x06e0, 0x04040403); ++ mchbar_write32(0x06e4, 0x04040404); ++ ++ mchbar_write32(0x0700, 0x02020202); ++ mchbar_write32(0x0704, 0x03020202); ++ mchbar_write32(0x0708, 0x04040403); ++ mchbar_write32(0x070c, 0x04040404); ++ mchbar_write32(0x0718, 0x02020202); ++ mchbar_write32(0x071c, 0x03020202); ++ mchbar_write32(0x0720, 0x04040403); ++ mchbar_write32(0x0724, 0x04040404); ++ ++ mchbar_write32(0x0740, 0x02020202); ++ mchbar_write32(0x0744, 0x03020202); ++ mchbar_write32(0x0748, 0x04040403); ++ mchbar_write32(0x074c, 0x04040404); ++ mchbar_write32(0x0758, 0x02020202); ++ mchbar_write32(0x075c, 0x03020202); ++ mchbar_write32(0x0760, 0x04040403); ++ mchbar_write32(0x0764, 0x04040404); ++ ++ mchbar_write32(0x0780, 0x06060606); ++ mchbar_write32(0x0784, 0x09070606); ++ mchbar_write32(0x0788, 0x0e0e0c0b); ++ mchbar_write32(0x078c, 0x0e0e0e0e); ++ mchbar_write32(0x0798, 0x06060606); ++ mchbar_write32(0x079c, 0x09070606); ++ mchbar_write32(0x07a0, 0x0d0d0c0b); ++ mchbar_write32(0x07a4, 0x0d0d0d0d); ++ ++ mchbar_write32(0x07c0, 0x06060606); ++ mchbar_write32(0x07c4, 0x09070606); ++ mchbar_write32(0x07c8, 0x0e0e0c0b); ++ mchbar_write32(0x07cc, 0x0e0e0e0e); ++ mchbar_write32(0x07d8, 0x06060606); ++ mchbar_write32(0x07dc, 0x09070606); ++ mchbar_write32(0x07e0, 0x0d0d0c0b); ++ mchbar_write32(0x07e4, 0x0d0d0d0d); ++ ++ mchbar_write32(0x0840, 0x06060606); ++ mchbar_write32(0x0844, 0x08070606); ++ mchbar_write32(0x0848, 0x0e0e0c0a); ++ mchbar_write32(0x084c, 0x0e0e0e0e); ++ mchbar_write32(0x0858, 0x06060606); ++ mchbar_write32(0x085c, 0x08070606); ++ mchbar_write32(0x0860, 0x0c0c0b0a); ++ mchbar_write32(0x0864, 0x0c0c0c0c); ++ ++ mchbar_write32(0x0880, 0x02020202); ++ mchbar_write32(0x0884, 0x03020202); ++ mchbar_write32(0x0888, 0x04040403); ++ mchbar_write32(0x088c, 0x04040404); ++ mchbar_write32(0x0898, 0x02020202); ++ mchbar_write32(0x089c, 0x03020202); ++ mchbar_write32(0x08a0, 0x04040403); ++ mchbar_write32(0x08a4, 0x04040404); ++ } + + igd_compute_ggc(sysinfo); + +diff --git a/src/northbridge/intel/gm45/raminit_rcomp_calibration.c b/src/northbridge/intel/gm45/raminit_rcomp_calibration.c +index b74765fd9c..5d4505e063 100644 +--- a/src/northbridge/intel/gm45/raminit_rcomp_calibration.c ++++ b/src/northbridge/intel/gm45/raminit_rcomp_calibration.c +@@ -198,7 +198,7 @@ void raminit_rcomp_calibration(int ddr_type, const stepping_t stepping) { + reg = mchbar_read32(0x518); + lut_idx[channel][group][PULL_UP] = (reg >> 24) & 0x7f; + lut_idx[channel][group][PULL_DOWN] = (reg >> 16) & 0x7f; +- if (i == 1) { ++ if ((i == 1) && (ddr_type == DDR2)) { + magic_comp[0] = (reg >> 8) & 0x3f; + magic_comp[1] = (reg >> 0) & 0x3f; + } +@@ -242,7 +242,8 @@ void raminit_rcomp_calibration(int ddr_type, const stepping_t stepping) { + } + mchbar += 0x0040; + } +- +- mchbar_clrsetbits32(0x4d0, 0x3f << 26, magic_comp[0] << 26); +- mchbar_clrsetbits32(0x4d0, 0x3f << 20, magic_comp[1] << 20); ++ if (ddr_type == DDR2) { ++ mchbar_clrsetbits32(0x4d0, 0x3f << 26, magic_comp[0] << 26); ++ mchbar_clrsetbits32(0x4d0, 0x3f << 20, magic_comp[1] << 20); ++ } + } +-- +2.39.5 + |