diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2017-05-15 10:21:37 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-05-14 07:41:11 +0000 |
| commit | 840c27ecfccc1cdb75ae2d0c11da54efb8c5676a (patch) | |
| tree | 1a226abb85117da17c56e65570d6305b43c91dbc /src/northbridge/intel/x4x | |
| parent | a2cc23169a81f669fa38ebf0f6b1393b06c17fda (diff) | |
nb/intel/x4x/raminit: Make programming crossclock support DDR3
A few values were wrong, but it does not seem to matter all that
much.
Change-Id: I86b70e06c81817854994b7feddf9f3638fd16198
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19871
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/northbridge/intel/x4x')
| -rw-r--r-- | src/northbridge/intel/x4x/raminit_ddr23.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/src/northbridge/intel/x4x/raminit_ddr23.c b/src/northbridge/intel/x4x/raminit_ddr23.c index f3257a9356..784a6d70a4 100644 --- a/src/northbridge/intel/x4x/raminit_ddr23.c +++ b/src/northbridge/intel/x4x/raminit_ddr23.c @@ -52,6 +52,7 @@ u32 ddr2mhz(u32 speed) static void program_crossclock(struct sysinfo *s) { u8 i, j; + u32 reg32; MCHBAR16(0xc1c) = MCHBAR16(0xc1c) | (1 << 15); static const u32 clkxtab[6][3][13] = { @@ -61,7 +62,7 @@ static void program_crossclock(struct sysinfo *s) {{}, {}, {} }, /* MEMCLK 667 * FSB 800 */ - {{0x1f1f1f1f, 0x1a07070b, 0x00000000, 0x10000000, + {{0x1f1f1f1f, 0x0d07070b, 0x00000000, 0x10000000, 0x20010208, 0x04080000, 0x10010002, 0x00000000, 0x00000000, 0x02000000, 0x04000100, 0x08000000, 0x10200204}, @@ -84,8 +85,8 @@ static void program_crossclock(struct sysinfo *s) /* FSB 1067 */ {0x07070707, 0x06030303, 0x00000000, 0x00000000, 0x08010200, 0x00000000, 0x04000102, 0x00000000, - 0x00000000, 0x00000000, 0x00020001, 0x00000000, - 0x02040801}, + 0x00000000, 0x00000000, 0x00020100, 0x00000000, + 0x04080100}, /* FSB 1333 */ {0x0d0b0707, 0x3e1f1f2f, 0x01010000, 0x00000000, 0x10020400, 0x02000000, 0x00040100, 0x00000000, @@ -116,7 +117,13 @@ static void program_crossclock(struct sysinfo *s) j = (u8)s->selected_timings.fsb_clk; MCHBAR32(0xc04) = clkxtab[i][j][0]; - MCHBAR32(0xc50) = clkxtab[i][j][1]; + reg32 = clkxtab[i][j][1]; + if (s->spd_type == DDR3 && s->max_fsb == FSB_CLOCK_1333MHz + && s->selected_timings.mem_clk == MEM_CLOCK_800MHz) { + reg32 &= ~(0xff << 24); + reg32 |= 0x3d << 24; + } + MCHBAR32(0xc50) = reg32; MCHBAR32(0xc54) = clkxtab[i][j][2]; MCHBAR8(0xc08) = MCHBAR8(0xc08) | (1 << 7); MCHBAR32(0x6d8) = clkxtab[i][j][3]; @@ -1545,8 +1552,11 @@ void do_raminit(struct sysinfo *s, int fast_boot) // Clear host clk gate reg MCHBAR32(0x1c) = MCHBAR32(0x1c) | 0xffffffff; - // Select DDR2 - MCHBAR8(0x1a8) = MCHBAR8(0x1a8) & ~0x4; + // Select type + if (s->spd_type == DDR2) + MCHBAR8(0x1a8) = MCHBAR8(0x1a8) & ~0x4; + else + MCHBAR8(0x1a8) = MCHBAR8(0x1a8) | 0x4; // Set freq MCHBAR32(0xc00) = (MCHBAR32(0xc00) & ~0x70) | |