diff options
| -rw-r--r-- | config/coreboot/default/patches/0027-nb-intel-gm45-Make-DDR2-raminit-work.patch | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/config/coreboot/default/patches/0027-nb-intel-gm45-Make-DDR2-raminit-work.patch b/config/coreboot/default/patches/0027-nb-intel-gm45-Make-DDR2-raminit-work.patch new file mode 100644 index 00000000..454e3e7b --- /dev/null +++ b/config/coreboot/default/patches/0027-nb-intel-gm45-Make-DDR2-raminit-work.patch @@ -0,0 +1,216 @@ +From e047dc3c95063f27517cd6754e9cbe496ac9313d Mon Sep 17 00:00:00 2001 +From: Angel Pons <th3fanbus@gmail.com> +Date: Mon, 10 May 2021 22:40:59 +0200 +Subject: [PATCH] [NOT FOR MERGE] nb/intel/gm45: Make DDR2 raminit work + +List of changes: + - Update some timing and ODT values + - Patch RCOMP calibration to better match what MRC binaries do + - Replay a hardcoded list of RCOMP codes after RcvEn + +This makes raminit work at DDR2-800 speeds and fixes S3 resume as well. +Tested on Toshiba Satellite A300-1ME with two 2 GiB DDR2-800 SO-DIMMs. + +Change-Id: Ibaee524b8ff652ddadd66cb0eb680401b988ff7c +Signed-off-by: Angel Pons <th3fanbus@gmail.com> +--- + +diff --git a/src/northbridge/intel/gm45/gm45.h b/src/northbridge/intel/gm45/gm45.h +index f28c6d1..bdf0432 100644 +--- a/src/northbridge/intel/gm45/gm45.h ++++ b/src/northbridge/intel/gm45/gm45.h +@@ -419,7 +419,7 @@ + int raminit_read_vco_index(void); + u32 raminit_get_rank_addr(unsigned int channel, unsigned int rank); + +-void raminit_rcomp_calibration(stepping_t stepping); ++void raminit_rcomp_calibration(int ddr_type, stepping_t stepping); + void raminit_reset_readwrite_pointers(void); + void raminit_receive_enable_calibration(int ddr_type, const timings_t *, const dimminfo_t *); + void raminit_write_training(const mem_clock_t, const dimminfo_t *, int s3resume); +diff --git a/src/northbridge/intel/gm45/raminit.c b/src/northbridge/intel/gm45/raminit.c +index ecada7b..2b8c44e 100644 +--- a/src/northbridge/intel/gm45/raminit.c ++++ b/src/northbridge/intel/gm45/raminit.c +@@ -1049,7 +1049,7 @@ + } + + /* Perform RCOMP calibration for DDR3. */ +- raminit_rcomp_calibration(stepping); ++ raminit_rcomp_calibration(spd_type, stepping); + + /* Run initial RCOMP. */ + mchbar_setbits32(0x418, 1 << 17); +@@ -1119,7 +1119,7 @@ + reg = (reg & ~(0xf << 10)) | (2 << 10); + else + reg = (reg & ~(0xf << 10)) | (3 << 10); +- reg = (reg & ~(0x7 << 5)) | (3 << 5); ++ reg = (reg & ~(0x7 << 5)) | (2 << 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); +@@ -1288,11 +1288,11 @@ + reg = (reg & ~(0xf << (44 - 32))) | (8 << (44 - 32)); + reg = (reg & ~(0xf << (40 - 32))) | (7 << (40 - 32)); + if (timings->mem_clock == MEM_CLOCK_667MT) { +- reg = (reg & ~(0xf << (36 - 32))) | (4 << (36 - 32)); +- reg = (reg & ~(0xf << (32 - 32))) | (4 << (32 - 32)); ++ reg = (reg & ~(0xf << (36 - 32))) | (8 << (36 - 32)); ++ reg = (reg & ~(0xf << (32 - 32))) | (8 << (32 - 32)); + } else { +- reg = (reg & ~(0xf << (36 - 32))) | (5 << (36 - 32)); +- reg = (reg & ~(0xf << (32 - 32))) | (5 << (32 - 32)); ++ reg = (reg & ~(0xf << (36 - 32))) | (9 << (36 - 32)); ++ reg = (reg & ~(0xf << (32 - 32))) | (9 << (32 - 32)); + } + mchbar_write32(CxODT_HIGH(ch), reg); + +@@ -2217,6 +2217,84 @@ + 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); ++ + igd_compute_ggc(sysinfo); + + /* Program final memory map (with real values). */ +diff --git a/src/northbridge/intel/gm45/raminit_rcomp_calibration.c b/src/northbridge/intel/gm45/raminit_rcomp_calibration.c +index aef863f..b74765f 100644 +--- a/src/northbridge/intel/gm45/raminit_rcomp_calibration.c ++++ b/src/northbridge/intel/gm45/raminit_rcomp_calibration.c +@@ -161,11 +161,13 @@ + mchbar += 4; + } + } +-void raminit_rcomp_calibration(const stepping_t stepping) { ++void raminit_rcomp_calibration(int ddr_type, const stepping_t stepping) { + const int a1step = stepping >= STEPPING_CONVERSION_A1; + + int i; + ++ char magic_comp[2] = {0}; ++ + enum { + PULL_UP = 0, + PULL_DOWN = 1, +@@ -196,6 +198,10 @@ + 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) { ++ magic_comp[0] = (reg >> 8) & 0x3f; ++ magic_comp[1] = (reg >> 0) & 0x3f; ++ } + } + /* Cleanup? */ + mchbar_setbits32(0x400, 1 << 3); +@@ -216,13 +222,19 @@ + for (channel = 0; channel < 2; ++channel) { + for (group = 0; group < 6; ++group) { + for (pu_pd = PULL_DOWN; pu_pd >= PULL_UP; --pu_pd) { +- lookup_and_write( +- a1step, +- lut_idx[channel][group][pu_pd] - 7, +- ddr3_lookup_schedule[group][pu_pd], +- mchbar); ++ if (ddr_type == DDR3) { ++ lookup_and_write( ++ a1step, ++ lut_idx[channel][group][pu_pd] - 7, ++ ddr3_lookup_schedule[group][pu_pd], ++ mchbar); ++ } + mchbar += 0x0018; + } ++ if (ddr_type == DDR2) { ++ mchbar_clrsetbits32(mchbar + 0, 0x7f << 24, lut_idx[channel][group][PULL_DOWN] << 24); ++ mchbar_clrsetbits32(mchbar + 4, 0x7f << 0, lut_idx[channel][group][PULL_UP] << 0); ++ } + mchbar += 0x0010; + /* Channel B knows only the first two groups. */ + if ((1 == channel) && (1 == group)) +@@ -230,4 +242,7 @@ + } + mchbar += 0x0040; + } ++ ++ mchbar_clrsetbits32(0x4d0, 0x3f << 26, magic_comp[0] << 26); ++ mchbar_clrsetbits32(0x4d0, 0x3f << 20, magic_comp[1] << 20); + } |