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nb/intel/gm45: Export low-power and (SFF) options 

Make the low-power and small form factor (SFF) options overridable
from romstage main. Also disable both options by default. That's ok
as there aren't yet any in-tree users of the GS45 chipset. As a nice
side-effect, this adds X200s support to the lenovo/x200 port.

Change-Id: I94373851262e6d424cf4885ceca7260c31bc9f61
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/12814
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Nico Huber 2015-12-30 00:17:27 +01:00 committed by Martin Roth
parent 0a207399ce
commit 5aaeb27de9
2 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/northbridge/intel/gm45/gm45.h
View File

@ -130,7 +130,6 @@ typedef struct {
int txt_enabled;
int cores;
gmch_gfx_t gfx_type;
int gs45_low_power_mode; /* low power mode of GMCH_GS45 */
int max_ddr2_mhz;
int max_ddr3_mt;
fsb_clock_t max_fsb;
@ -140,10 +139,13 @@ typedef struct {
int enable_peg;
u16 ggc;
/* to be filled in romstage main: */
int spd_type;
timings_t selected_timings;
dimminfo_t dimms[2];
u8 spd_map[4];
int gs45_low_power_mode; /* low power mode of GMCH_GS45 */
int sff; /* small form factor option (soldered down DIMM) */
} sysinfo_t;
#define TOTAL_CHANNELS 2
#define CHANNEL_IS_POPULATED(dimms, idx) (dimms[idx].card_type != 0)

13
src/northbridge/intel/gm45/raminit.c
View File

@ -80,7 +80,6 @@ void get_gmch_info(sysinfo_t *sysinfo)
sysinfo->gfx_type = gmch_gfx_types[gfx_variant][render_freq];
else
sysinfo->gfx_type = GMCH_UNKNOWN;
sysinfo->gs45_low_power_mode = 0;
switch (sysinfo->gfx_type) {
case GMCH_GM45:
printk(BIOS_SPEW, "GMCH: GM45\n");
@ -104,8 +103,8 @@ void get_gmch_info(sysinfo_t *sysinfo)
printk(BIOS_SPEW, "GMCH: GS40\n");
break;
case GMCH_GS45:
printk(BIOS_SPEW, "GMCH: GS45, using low power mode by default\n");
sysinfo->gs45_low_power_mode = 1;
printk(BIOS_SPEW, "GMCH: GS45, using %s-power mode\n",
sysinfo->gs45_low_power_mode ? "low" : "high");
break;
case GMCH_PM45:
printk(BIOS_SPEW, "GMCH: PM45\n");
@ -1688,7 +1687,6 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
{
const dimminfo_t *const dimms = sysinfo->dimms;
const timings_t *const timings = &sysinfo->selected_timings;
const int sff = sysinfo->gfx_type == GMCH_GS45;
int ch;
u8 reg8;
@ -1730,7 +1728,7 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
configure_dram_control_mode(timings, dimms);
/* Initialize RCOMP. */
rcomp_initialization(sysinfo->stepping, sff);
rcomp_initialization(sysinfo->stepping, sysinfo->sff);
/* Power-up DRAM. */
dram_powerup(s3resume);
@ -1743,7 +1741,7 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
MCHBAR32(CxDCLKDIS_MCHBAR(ch)) |= CxDCLKDIS_ENABLE;
/* Enable On-Die Termination. */
odt_setup(timings, sff);
odt_setup(timings, sysinfo->sff);
/* Miscellaneous settings. */
misc_settings(timings, sysinfo->stepping);
/* Program clock crossing registers. */
@ -1751,7 +1749,8 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
/* Program egress VC1 timings. */
vc1_program_timings(timings->fsb_clock);
/* Perform system-memory i/o initialization. */
memory_io_init(timings->mem_clock, dimms, sysinfo->stepping, sff);
memory_io_init(timings->mem_clock, dimms,
sysinfo->stepping, sysinfo->sff);
/* Initialize memory map with dummy values of 128MB per rank with a
page size of 4KB. This makes the JEDEC initialization code easier. */