Angel Pons has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/45606 )
Change subject: [UNTESTED] nb/intel/ironlake: Fix some replay issues ......................................................................
[UNTESTED] nb/intel/ironlake: Fix some replay issues
Dummy reads followed by writes are actually read-modify-write operations in disassembled binaries. Handling of the scratchpad register 0x2ca8 is still nonsense, but that should be taken care of in a separate commit.
Change-Id: Ie33f42ecdb25febf3c82febeca13662232dea9ec Signed-off-by: Angel Pons th3fanbus@gmail.com --- M src/northbridge/intel/ironlake/raminit.c 1 file changed, 64 insertions(+), 47 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/06/45606/1
diff --git a/src/northbridge/intel/ironlake/raminit.c b/src/northbridge/intel/ironlake/raminit.c index 6c480de..6293c0e 100644 --- a/src/northbridge/intel/ironlake/raminit.c +++ b/src/northbridge/intel/ironlake/raminit.c @@ -316,12 +316,22 @@ MCHBAR16(0x2b9 + (channel << 10)) = si; }
+static void toggle_1d0_142_5ff(void) +{ + u32 reg32 = gav(read_1d0(0x142, 3)); + if (reg32 & (1 << 1)) + write_1d0(0, 0x142, 3, 1); + + MCHBAR8(0x5ff) = 0x0; + MCHBAR8(0x5ff) = 0x80; + if (reg32 & (1 << 1)) + write_1d0(0x2, 0x142, 3, 1); +} + static u32 get_580(int channel, u8 addr) { u32 ret; - gav(read_1d0(0x142, 3)); - MCHBAR8(0x5ff) = 0x0; - MCHBAR8(0x5ff) = 0x80; + toggle_1d0_142_5ff(); MCHBAR32(0x580 + (channel << 10)) = 0x8493c012 | addr; MCHBAR8_OR(0x580 + (channel << 10), 1); while (!((ret = MCHBAR32(0x580 + (channel << 10))) & 0x10000)) @@ -373,10 +383,9 @@ gav(get_580(channel, ((i + 1) << 2) | (rank << 5))); }
- gav(read_1d0(0x142, 3)); // = 0x10408118 - MCHBAR8(0x5ff) = 0x0; - MCHBAR8(0x5ff) = 0x80; + toggle_1d0_142_5ff(); write_1d0(0x2, 0x142, 3, 1); + for (lane = 0; lane < 8; lane++) { // printk (BIOS_ERR, "before: %x\n", info->training.lane_timings[2][channel][slot][rank][lane]); info->training.lane_timings[2][channel][slot][rank][lane] = @@ -4176,11 +4185,10 @@ MCHBAR16(0x1220) = 0x1388; }
- MCHBAR32_AND_OR(0x2c80, 0, 0x1053688); // !!!! - MCHBAR32(0x1c04); // !!!! - MCHBAR32(0x1804) = 0x406080; + MCHBAR32_OR(0x2c80, (1 << 24)); + MCHBAR32(0x1804) = MCHBAR32(0x1c04) & ~(1 << 27);
- MCHBAR8(0x2ca8); + MCHBAR8(0x2ca8); // !!!!
if (x2ca8 == 0) { MCHBAR8_AND(0x2ca8, ~3); @@ -4195,15 +4203,26 @@ MCHBAR32_OR(0x1af0, 0x10); halt(); } + MCHBAR8(0x2ca8) = MCHBAR8(0x2ca8); // !!!!
- MCHBAR8(0x2ca8) = MCHBAR8(0x2ca8); - MCHBAR32_AND_OR(0x2c80, 0, 0x53688); // !!!! + MCHBAR32_AND(0x2c80, ~(1 << 24)); + pci_write_config32(QPI_NON_CORE, MAX_RTIDS, 0x20220); - MCHBAR16(0x2c20); // !!!! - MCHBAR16(0x2c10); // !!!! - MCHBAR16(0x2c00); // !!!! - MCHBAR16(0x2c00) = 0x8c0; - udelay(1000); + + { + u8 x2c20 = (MCHBAR16(0x2c20) >> 8) & 3; + u16 x2c10 = MCHBAR16(0x2c10); + u16 value = MCHBAR16(0x2c00); + if (x2c20 == 0 && (x2c10 & 0x300) == 0) + value |= (1 << 7); + else + value &= ~(1 << 0); + + MCHBAR16(0x2c00) = value; + } + + udelay(1000); // !!!! + write_1d0(0, 0x33d, 0, 0); write_500(&info, 0, 0, 0xb61, 0, 0); write_500(&info, 1, 0, 0xb61, 0, 0); @@ -4306,8 +4325,9 @@
MCHBAR32_AND_OR(0x1f4, 0, 0x20000); // !!!! MCHBAR32(0x1f0) = 0x1d000200; - MCHBAR8_AND_OR(0x1f0, 0, 0x1); // !!!! - MCHBAR8(0x1f0); // !!!! + MCHBAR8_OR(0x1f0, 0x1); + while (MCHBAR8(0x1f0) & 1) + ;
program_board_delay(&info);
@@ -4318,25 +4338,20 @@ MCHBAR32_AND(0x130, 0xfffffffd); // | 2 when ? while (MCHBAR32(0x130) & 1) ; - gav(read_1d0(0x14b, 7)); // = 0x81023100 - write_1d0(0x30, 0x14b, 7, 1); - read_1d0(0xd6, 6); // = 0xfa008080 // !!!! - write_1d0(7, 0xd6, 6, 1); - read_1d0(0x328, 6); // = 0xfa018080 // !!!! - write_1d0(7, 0x328, 6, 1); + + rmw_1d0(0x14b, 0x47, 0x30, 7, 1); + rmw_1d0(0xd6, 0x38, 7, 6, 1); + rmw_1d0(0x328, 0x38, 7, 6, 1);
for (channel = 0; channel < NUM_CHANNELS; channel++) set_4cf(&info, channel, info.populated_ranks[channel][0][0] ? 8 : 0);
- read_1d0(0x116, 4); // = 0x4040432 // !!!! - write_1d0(2, 0x116, 4, 1); - read_1d0(0xae, 6); // = 0xe8088080 // !!!! - write_1d0(0, 0xae, 6, 1); - read_1d0(0x300, 4); // = 0x48088080 // !!!! - write_1d0(0, 0x300, 6, 1); - MCHBAR16_AND_OR(0x356, 0, 0x1040); // !!!! - MCHBAR16_AND_OR(0x756, 0, 0x1040); // !!!! + rmw_1d0(0x116, 0xe, 0, 4, 1); + rmw_1d0(0xae, 0x3e, 0, 6, 1); + rmw_1d0(0x300, 0x3e, 0, 6, 1); + MCHBAR16_AND(0x356, 0x7fff); + MCHBAR16_AND(0x756, 0x7fff); MCHBAR32_AND(0x140, ~0x07000000); MCHBAR32_AND(0x138, ~0x07000000); MCHBAR32(0x130) = 0x31111301; @@ -4370,10 +4385,8 @@ write_1d0(2, 0xae, 6, 1); write_1d0(2, 0x300, 6, 1); write_1d0(2, 0x121, 3, 1); - read_1d0(0xd6, 6); // = 0xfa00c0c7 // !!!! - write_1d0(4, 0xd6, 6, 1); - read_1d0(0x328, 6); // = 0xfa00c0c7 // !!!! - write_1d0(4, 0x328, 6, 1); + rmw_1d0(0xd6, 0x38, 4, 6, 1); + rmw_1d0(0x328, 0x38, 4, 6, 1);
for (channel = 0; channel < NUM_CHANNELS; channel++) set_4cf(&info, channel, @@ -4383,12 +4396,17 @@ (info.populated_ranks[0][0][0] << 29); while (MCHBAR8(0x130) & 1) ; - read_1d0(0xa1, 6); // = 0x1cf4054 // !!!! - read_1d0(0x2f3, 6); // = 0x10a4054 // !!!! - read_1d0(0x21c, 6); // = 0xafa00c0 // !!!! - write_1d0(0, 0x21c, 6, 1); - read_1d0(0x14b, 7); // = 0x810231b0 // !!!! - write_1d0(0x35, 0x14b, 7, 1); + + { + u32 reg32 = read_1d0(0xa1, 6); + read_1d0(0x2f3, 6); // = 0x10a4054 // !!!! + rmw_1d0(0x21c, 0x38, 0, 6, 1); + u8 reg8 = 0; + reg8 |= (reg32 >> 4) & (1 << 0); + reg8 |= (reg32 >> 2) & (1 << 1); + reg8 |= (reg32 >> 0) & (1 << 2); + rmw_1d0(0x14b, 0x78, reg8, 7, 1); + }
for (channel = 0; channel < NUM_CHANNELS; channel++) set_4cf(&info, channel, @@ -4443,8 +4461,8 @@
MCHBAR8(0x12c) = 0x9f;
- MCHBAR8_AND_OR(0x271, 0, 0xe); // 2 // !!!! - MCHBAR8_AND_OR(0x671, 0, 0xe); // !!!! + MCHBAR8_AND_OR(0x271, 0xcf, 0xe); + MCHBAR8_AND_OR(0x671, 0xcf, 0xe);
if (!s3resume) { for (channel = 0; channel < NUM_CHANNELS; channel++) { @@ -4469,8 +4487,7 @@ write_1d0(7, 0x1c0, 3, 1); write_1d0(4, 0x1c6, 4, 1); write_1d0(4, 0x1cc, 4, 1); - read_1d0(0x151, 4); // = 0x408c6d74 // !!!! - write_1d0(4, 0x151, 4, 1); + rmw_1d0(0x151, 0xf, 0x4, 4, 1); MCHBAR32(0x584) = 0xfffff; MCHBAR32(0x984) = 0xfffff;