diff options
| author | Oskar Enoksson <enok@lysator.liu.se> | 2014-02-11 22:51:03 +0100 |
|---|---|---|
| committer | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2014-02-11 23:56:28 +0100 |
| commit | aaedecaea4748ca656c5fdf0fae529b9e7b5408d (patch) | |
| tree | 03fbe81a924657f18a861359911994af1767dd14 /src/mainboard/hp/dl145_g1/romstage.c | |
| parent | d907a3402e347633bac09013050a3d290c27d1f8 (diff) | |
hp/dl145_g1: Adding FID/VID and Powernow ACPI
Add cool-n-quiet functionality which allows the OS to dynamic
alter CPU voltage and frequency change in order to save power
e.g. when the CPU load is low.
Change-Id: I4c895a56bcf571d4276af192aeef87d120143063
Signed-off-by: Oskar Enoksson <enok@lysator.liu.se>
Reviewed-on: http://review.coreboot.org/5186
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/mainboard/hp/dl145_g1/romstage.c')
| -rw-r--r-- | src/mainboard/hp/dl145_g1/romstage.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/mainboard/hp/dl145_g1/romstage.c b/src/mainboard/hp/dl145_g1/romstage.c index 67ce9c1f01..94771ddb9b 100644 --- a/src/mainboard/hp/dl145_g1/romstage.c +++ b/src/mainboard/hp/dl145_g1/romstage.c @@ -82,6 +82,9 @@ static inline int spd_read_byte(unsigned device, unsigned address) #include "cpu/amd/dualcore/dualcore.c" #include <spd.h> #include "cpu/amd/model_fxx/init_cpus.c" +#if CONFIG_SET_FIDVID +#include "cpu/amd/model_fxx/fidvid.c" +#endif #define RC0 ((1<<1)<<8) #define RC1 ((1<<2)<<8) @@ -126,6 +129,33 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) #endif ht_setup_chains_x(sysinfo); +#if CONFIG_SET_FIDVID + /* Check to see if processor is capable of changing FIDVID */ + /* otherwise it will throw a GP# when reading FIDVID_STATUS */ + struct cpuid_result cpuid1 = cpuid(0x80000007); + if ((cpuid1.edx & 0x6) == 0x6) { + { + /* Read FIDVID_STATUS */ + msr_t msr; + msr=rdmsr(0xc0010042); + print_debug("begin msr fid, vid "); print_debug_hex32( msr.hi ); print_debug_hex32(msr.lo); print_debug("\n"); + } + + enable_fid_change(); + enable_fid_change_on_sb(sysinfo->sbbusn, sysinfo->sbdn); + init_fidvid_bsp(bsp_apicid); + + // show final fid and vid + { + msr_t msr; + msr=rdmsr(0xc0010042); + print_debug("end msr fid, vid "); print_debug_hex32( msr.hi ); print_debug_hex32(msr.lo); print_debug("\n"); + } + + } else { + print_debug("Changing FIDVID not supported\n"); + } +#endif needs_reset |= optimize_link_coherent_ht(); needs_reset |= optimize_link_incoherent_ht(sysinfo); @@ -155,6 +185,9 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) fill_mem_ctrl(sysinfo->nodes, sysinfo->ctrl, spd_addr); memreset_setup(); +#if CONFIG_SET_FIDVID + init_timer(); // Need to use TMICT to synchronize FID/VID +#endif sdram_initialize(sysinfo->nodes, sysinfo->ctrl, sysinfo); //dump_pci_devices(); |