diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2015-10-09 13:43:51 +0200 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2015-11-19 21:43:31 +0100 |
| commit | 9b51568897ff476ed770f455a54745551d5e5614 (patch) | |
| tree | 316961f627fc176e5e6c16d1e1df45e6fe840df3 /src | |
| parent | b15a0d0a6fdd4cce7f6e22570642d863391fc5c6 (diff) | |
nb/intel/sandybridge/raminit: Factor out code into toggle_io_reset
Found while doing code review.
Use a function to toggle IO reset signal.
Change-Id: I4cb0885ed9be763fbc4069e4d015a36a7183c823
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: http://review.coreboot.org/11916
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src')
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit.c | 48 |
1 files changed, 14 insertions, 34 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit.c b/src/northbridge/intel/sandybridge/raminit.c index ed8e9d1a7f..8922d31221 100644 --- a/src/northbridge/intel/sandybridge/raminit.c +++ b/src/northbridge/intel/sandybridge/raminit.c @@ -220,6 +220,15 @@ static void sfence(void) asm volatile ("sfence"); } +static void toggle_io_reset(void) { + /* toggle IO reset bit */ + u32 r32 = read32(DEFAULT_MCHBAR + 0x5030); + write32(DEFAULT_MCHBAR + 0x5030, r32 | 0x20); + udelay(1); + write32(DEFAULT_MCHBAR + 0x5030, r32 & ~0x20); + udelay(1); +} + /* * Dump in the log memory controller configuration as read from the memory * controller registers. @@ -1914,7 +1923,6 @@ static void read_training(ramctr_timing * ctrl) int channel, slotrank, lane; FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { - u32 r32; int all_high, some_high; int upperA[NUM_LANES]; struct timA_minmax mnmx; @@ -1997,12 +2005,7 @@ static void read_training(ramctr_timing * ctrl) write32(DEFAULT_MCHBAR + 0x3400, 0); - /* toggle IO reset bit */ - r32 = read32(DEFAULT_MCHBAR + 0x5030); - write32(DEFAULT_MCHBAR + 0x5030, r32 | 0x20); - udelay(1); - write32(DEFAULT_MCHBAR + 0x5030, r32 & ~0x20); - udelay(1); + toggle_io_reset(); } FOR_ALL_POPULATED_CHANNELS { @@ -2536,7 +2539,6 @@ static void write_op(ramctr_timing * ctrl, int channel) static void write_training(ramctr_timing * ctrl) { int channel, slotrank, lane; - u32 r32; FOR_ALL_POPULATED_CHANNELS write32(DEFAULT_MCHBAR + 0x4008 + 0x400 * channel, @@ -2566,12 +2568,7 @@ static void write_training(ramctr_timing * ctrl) write32(DEFAULT_MCHBAR + 0x3400, 0x108052); - /* toggle IO reset bit */ - r32 = read32(DEFAULT_MCHBAR + 0x5030); - write32(DEFAULT_MCHBAR + 0x5030, r32 | 0x20); - udelay(1); - write32(DEFAULT_MCHBAR + 0x5030, r32 & ~0x20); - udelay(1); + toggle_io_reset(); /* set any valid value for timB, it gets corrected later */ FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS @@ -2607,12 +2604,7 @@ static void write_training(ramctr_timing * ctrl) wait_428c(channel); } - /* toggle IO reset bit */ - r32 = read32(DEFAULT_MCHBAR + 0x5030); - write32(DEFAULT_MCHBAR + 0x5030, r32 | 0x20); - udelay(1); - write32(DEFAULT_MCHBAR + 0x5030, r32 & ~0x20); - udelay(1); + toggle_io_reset(); printram("CPE\n"); precharge(ctrl); @@ -2760,7 +2752,6 @@ static void fill_pattern5(ramctr_timing * ctrl, int channel, int patno) static void reprogram_320c(ramctr_timing * ctrl) { int channel, slotrank; - u32 r32; FOR_ALL_POPULATED_CHANNELS { wait_428c(channel); @@ -2810,12 +2801,7 @@ static void reprogram_320c(ramctr_timing * ctrl) /* mrs commands. */ dram_mrscommands(ctrl); - /* toggle IO reset bit */ - r32 = read32(DEFAULT_MCHBAR + 0x5030); - write32(DEFAULT_MCHBAR + 0x5030, r32 | 0x20); - udelay(1); - write32(DEFAULT_MCHBAR + 0x5030, r32 & ~0x20); - udelay(1); + toggle_io_reset(); } #define MIN_C320C_LEN 13 @@ -3001,16 +2987,10 @@ static void discover_edges(ramctr_timing * ctrl) int falling_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; int rising_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; int channel, slotrank, lane; - u32 r32; write32(DEFAULT_MCHBAR + 0x3400, 0); - /* toggle IO reset bit */ - r32 = read32(DEFAULT_MCHBAR + 0x5030); - write32(DEFAULT_MCHBAR + 0x5030, r32 | 0x20); - udelay(1); - write32(DEFAULT_MCHBAR + 0x5030, r32 & ~0x20); - udelay(1); + toggle_io_reset(); FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { write32(DEFAULT_MCHBAR + 4 * lane + |