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authorPatrick Georgi <patrick.georgi@coresystems.de>2010-10-01 08:02:45 +0000
committerPatrick Georgi <patrick.georgi@coresystems.de>2010-10-01 08:02:45 +0000
commit77d6683edd1c0af74e4435cf432a558df3fe71eb (patch)
tree496faa30bc4392f2cd9834882564fafc310061b1 /src/northbridge
parent66d1687b927a94991233d1ee87dc916fb6ae033f (diff)
Move several i945 config #defines from romstage.c to Kconfig.
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5891 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge')
-rw-r--r--src/northbridge/intel/i945/Kconfig38
-rw-r--r--src/northbridge/intel/i945/raminit.c30
2 files changed, 51 insertions, 17 deletions
diff --git a/src/northbridge/intel/i945/Kconfig b/src/northbridge/intel/i945/Kconfig
index 952bd9ed68..cee1a8745d 100644
--- a/src/northbridge/intel/i945/Kconfig
+++ b/src/northbridge/intel/i945/Kconfig
@@ -26,3 +26,41 @@ config FALLBACK_VGA_BIOS_ID
default "8086,27a2"
depends on NORTHBRIDGE_INTEL_I945
+choice
+ default I945GM
+ depends on NORTHBRIDGE_INTEL_I945
+ help
+ Different i945 variants require slightly different setup.
+
+config I945GM
+ bool "i945GM (Mobile) chipset"
+
+config I945GC
+ bool "i945GC chipset"
+
+endchoice
+
+config CHANNEL_XOR_RANDOMIZATION
+ bool
+ default n
+ depends on NORTHBRIDGE_INTEL_I945
+
+config OVERRIDE_CLOCK_DISABLE
+ bool
+ default n
+ depends on NORTHBRIDGE_INTEL_I945
+ help
+ Usually system firmware turns off system memory clock
+ signals to unused SO-DIMM slots to reduce EMI and power
+ consumption.
+ However, some boards do not like unused clock signals to
+ be disabled.
+
+config MAXIMUM_SUPPORTED_FREQUENCY
+ int
+ default 0
+ depends on NORTHBRIDGE_INTEL_I945
+ help
+ If non-zero, this designates the maximum DDR frequency
+ the board supports, despite what the chipset should be
+ capable of.
diff --git a/src/northbridge/intel/i945/raminit.c b/src/northbridge/intel/i945/raminit.c
index 424fd2b6e9..50cab4929d 100644
--- a/src/northbridge/intel/i945/raminit.c
+++ b/src/northbridge/intel/i945/raminit.c
@@ -90,7 +90,7 @@ static void sdram_dump_mchbar_registers(void)
static int memclk(void)
{
int offset = 0;
-#ifdef CHIPSET_I945GM
+#if CONFIG_I945GM
offset++;
#endif
switch (((MCHBAR32(CLKCFG) >> 4) & 7) - offset) {
@@ -102,7 +102,7 @@ static int memclk(void)
return -1;
}
-#ifdef CHIPSET_I945GM
+#if CONFIG_I945GM
static int fsbclk(void)
{
switch (MCHBAR32(CLKCFG) & 7) {
@@ -114,7 +114,7 @@ static int fsbclk(void)
return -1;
}
#endif
-#ifdef CHIPSET_I945GC
+#if CONFIG_I945GC
static int fsbclk(void)
{
switch (MCHBAR32(CLKCFG) & 7) {
@@ -131,8 +131,8 @@ static int sdram_capabilities_max_supported_memory_frequency(void)
{
u32 reg32;
-#ifdef MAXIMUM_SUPPORTED_FREQUENCY
- return MAXIMUM_SUPPORTED_FREQUENCY;
+#if CONFIG_MAXIMUM_SUPPORTED_FREQUENCY
+ return CONFIG_MAXIMUM_SUPPORTED_FREQUENCY;
#endif
reg32 = pci_read_config32(PCI_DEV(0, 0x00, 0), 0xe4); /* CAPID0 + 4 */
@@ -1045,7 +1045,7 @@ static const u32 *slew_group_lookup(int dual_channel, int index)
return nc;
}
-#ifdef CHIPSET_I945GM
+#if CONFIG_I945GM
/* Strength multiplier tables */
static const u8 dual_channel_strength_multiplier[] = {
0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11,
@@ -1101,7 +1101,7 @@ static const u8 single_channel_strength_multiplier[] = {
0x33, 0x00, 0x11, 0x00, 0x44, 0x44, 0x33, 0x11
};
#endif
-#ifdef CHIPSET_I945GC
+#if CONFIG_I945GC
static const u8 dual_channel_strength_multiplier[] = {
0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22,
0x44, 0x22, 0x00, 0x00, 0x44, 0x44, 0x44, 0x22,
@@ -2155,7 +2155,7 @@ static void sdram_program_clock_crossing(void)
/**
* We add the indices according to our clocks from CLKCFG.
*/
-#ifdef CHIPSET_I945GM
+#if CONFIG_I945GM
static const u32 data_clock_crossing[] = {
0x00100401, 0x00000000, /* DDR400 FSB400 */
0xffffffff, 0xffffffff, /* nonexistant */
@@ -2201,7 +2201,7 @@ static void sdram_program_clock_crossing(void)
};
#endif
-#ifdef CHIPSET_I945GC
+#if CONFIG_I945GC
/* i945 G/P */
static const u32 data_clock_crossing[] = {
0xffffffff, 0xffffffff, /* nonexistant */
@@ -2420,7 +2420,7 @@ static void sdram_post_jedec_initialization(struct sys_info *sysinfo)
if (sysinfo->interleaved) {
reg32 = MCHBAR32(DCC);
-#if CHANNEL_XOR_RANDOMIZATION
+#if CONFIG_CHANNEL_XOR_RANDOMIZATION
reg32 &= ~(1 << 10);
reg32 |= (1 << 9);
#else
@@ -2792,10 +2792,10 @@ static void sdram_enable_memory_clocks(struct sys_info *sysinfo)
{
u8 clocks[2] = { 0, 0 };
-#ifdef CHIPSET_I945GM
+#if CONFIG_I945GM
#define CLOCKS_WIDTH 2
#endif
-#ifdef CHIPSET_I945GC
+#if CONFIG_I945GC
#define CLOCKS_WIDTH 3
#endif
if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED)
@@ -2810,15 +2810,11 @@ static void sdram_enable_memory_clocks(struct sys_info *sysinfo)
if (sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED)
clocks[1] |= ((1 << CLOCKS_WIDTH)-1) << CLOCKS_WIDTH;
-#ifdef OVERRIDE_CLOCK_DISABLE
+#if CONFIG_OVERRIDE_CLOCK_DISABLE
/* Usually system firmware turns off system memory clock signals
* to unused SO-DIMM slots to reduce EMI and power consumption.
* However, the Kontron 986LCD-M does not like unused clock
* signals to be disabled.
- * If other similar mainboard occur, it would make sense to make
- * this an entry in the sysinfo structure, and pre-initialize that
- * structure in the mainboard's romstage.c main() function.
- * For now an #ifdef will do.
*/
clocks[0] = 0xf; /* force all clock gate pairs to enable */